Patent Grant
12163305
The present application belongs to the technical field of closure joints, and particularly relates to an installation method for a closure joint of an immersed tunnel.
In order to shorten a construction period, an immersed tunnel is usually constructed simultaneously from both ends in a tunnel length direction, and finally a closure joint is used to connect tube couplings placed at both ends to achieve final closure of the tunnel. A mounting sequence of the tube couplings is shown in
Since the N+1 tube coupling and the N+2 tube coupling are constructed independently of each other, there may be a deviation between axes of the N+1 tube coupling and the N+2 tube coupling, which will affect the connection quality of the closure joint and cause serious consequences.
To overcome the shortcomings in related arts, the present application provides an installation method for a closure joint of an immersed tunnel to improve the installing accuracy of the closure joint.
The present application provides an installation method for a closure joint of an immersed tunnel, which comprises:
In some embodiments of this application, in the step of installing the N+2 tube coupling, a method for calculating the deviation between the N+2 tube coupling and the N+3 tube coupling is as follows:
In some embodiments of this application, in the step of installing the N+1 tube coupling, a method for calculating the deviation between the N+1 tube coupling and the N+2 tube coupling is as follows:
In some embodiments of this application, in the step of pushing out the push-out segment, a method for calculating the deviation between the push-out segment and the N+2 tube coupling is as follows:
In some embodiments of this application, the method further comprises a step of establishing a second coordinate system: distributing a control point ND at the tail end of the N tube coupling, and establishing the second coordinate system at the tail end of the N tube coupling; the step of distributing feature points further comprises: by taking the control point ND as a reference point, respectively measuring relative positions of the breakthrough points N+1S and N+1W with respect to the control point ND, and converting the relative positions into coordinates of the breakthrough points N+1S and N+1W in the second coordinate system, so as to calculate a deviation between the N+1 tube coupling and the N tube coupling.
In some embodiments of this application, the coordinates of the control point ND in the second coordinate system are (x7, y7, z7), and the coordinates of the breakthrough points N+1S and N+1W in the second coordinate system are (x3′, y3′, z3′) and (x4′, y4′, z4′) respectively; in the step of installing the N+1 tube coupling, a method for calculating the deviation between the N+1 tube coupling and the N tube coupling is as follows:
In some embodiments of this application, the method further comprises a step of verifying accuracy of the first coordinate system: respectively measuring relative positions of the breakthrough points N+2S and N+2W with respect to the control point ND, and converting the relative positions into coordinates of the breakthrough points N+2S and N+2W in the second coordinate system, calculating a deviation between the N+1 tube coupling and the N+2 tube coupling by using the second coordinate system, and comparing the deviation between the N+1 tube coupling and the N+2 tube coupling obtained by using the second coordinate system with the deviation between the N+1 tube coupling and the N+2 tube coupling obtained by using the first coordinate system, so as to verify the accuracy of the deviation between the N+1 tube coupling and the N+2 tube coupling calculated by using the first coordinate system.
In some embodiments of this application, the coordinates of the breakthrough points N+2S and N+2W in the second coordinate system are (x5′, y5′, z5′) and (x6′, y6′, z6′) respectively, and in the step of verifying the accuracy of the first coordinate system, a method for calculating the deviation between the N+1 tube coupling and the N+2 tube coupling by using the second coordinate system is as follows:
In some embodiments of this application, in the step of establishing the first coordinate system, taking a point o located at the tail end of the N+3 tube coupling and a point o1 located at a head end of the N+3 tube coupling, and establishing a three-dimensional rectangular coordinate system as the first coordinate system by taking the point o as an origin point of the first coordinate system, taking a straight line where the point o and the point o1 are located as an x axis of the first coordinate system and taking a straight line passing the point o and being perpendicular to a top surface of the N+3 tube coupling as a z axis.
In some embodiments of this application, in the step of establishing the first coordinate system, taking a direction from the head end of the N+3 tube coupling to the tail end of the N+3 tube coupling as a positive direction of the x axis of the first coordinate system; and according to the origin point o, the x axis and the positive direction of the x axis of the first coordinate system, based on a left-hand rule, taking a straight line where a thumb of a left hand is located as a y axis of the first coordinate system, and taking a direction that the thumb of the left hand points to as a positive direction of the y axis of the first coordinate system.
In some embodiments of this application, the step of establishing the second coordinate system comprises: taking a point o2 located at the tail end of the N tube coupling and a point o2′ located at a head end of the N tube coupling, and establishing a three-dimensional rectangular coordinate system as the second coordinate system by taking the point o2 as an origin point of the second coordinate system, taking a straight line where the point o2 and the point o2′ are located as an x axis of the second coordinate system and taking a straight line passing the point o2 and being perpendicular to a top surface of the N tube coupling as a z axis.
Based on the aforementioned technical solution, the installation method for the closure joint of the immersed tunnel in the embodiments of this application can realize precise installing of the closure joint; and the installing steps are simple and easy to operate. By establishing the first coordinate system at the N+3 tube coupling, and distributing the breakthrough points N+2S and N+2W respectively at the head end and the tail end of the N+2 tube coupling, the deviation between the N+2 tube coupling and the N+3 tube coupling is calculated by using the coordinates of the breakthrough point N+2S and N+2W in the first coordinate system, so as to guide the installing of the N+2 tube coupling: by distributing the breakthrough points N+1S and N+1W at the head end and the tail end of the N+1 tube coupling respectively, the deviation between the N+1 tube coupling and the N+2 tube coupling is calculated by using the coordinates of the breakthrough points N+1S and N+1W in the first coordinate system, so as to guide the installing of the N+1 tube coupling; and by distributing the breakthrough points DS and DW at the push-out segment, the deviation between the push-out segment and the N+1 tube coupling and the deviation between the push-out segment and the N+2 tube coupling are calculated by using the coordinates of the breakthrough points DS and DW in the first coordinate system, so as to allow the push-out segment to be precisely butted with the tail end of the N+2 tube coupling.
The accompanying drawings described herein are to provide a further understanding of the present application and constitute a part of this application. The illustrative embodiments and their descriptions are provided to explain the present application and do not constitute undue limitations on the present application. In the drawings:
In the Drawings:
1. N tube coupling; 2. N+1 tube coupling; 3. N+2 tube coupling; 4. N+3 tube coupling; 5. push-out segment.
The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings of the present application. Apparently, embodiments to be described in the specific implementations are only some but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without involving any inventive effort shall fall into the protection scope of the present application.
In the description of the present application, it is to be understood that the terms “central”, “lateral”, “longitudinal”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like are based on directional or positional relationships as shown in the accompanying drawings, and are only for the purposes of facilitating and simplifying the descriptions, rather than indicating or implying that the referred apparatus or element has to have a specific direction or be constructed and operated in the specific direction, and therefore, they cannot be regarded as limitations on the present application.
Terms “first” and “second” are for descriptive purposes only, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly comprise one or more of the features.
In the description of the present application, it should be noted that unless otherwise specified and limited, the terms “installed”, “linked” and “connected” should be broadly understood, for example, it means that two elements may be fixedly connected, detachably connected or integrally connected: may be directly connected, may be indirectly connected through an intermediate medium, or may be internally communicated. For those skilled in the art, the specific meanings of the above terms in this application can be understood depending on specific situations.
It is worth understanding that the specific order of steps of a method may be shown in the accompanying drawings, but the order of the steps may also be different from the described order. Furthermore, two or more steps can be performed at the same time or partially performed at the same time. All such variations fall within the scope of the present disclosure. In the description of the present application, a “push-out segment” means a “closure joint”.
In a construction process of an immersed tunnel, construction is simultaneously performed from both ends in opposite directions, and the closure joint is installed at a final joining position. The installation method for the closure joint of the immersed tunnel in the present application mainly involves installing the closure joint and four tube couplings related to the installation of the closure joint, and the installation methods for the remaining tube couplings are not within the scope of the present application, and may refer to the prior art.
As shown in
As shown in
In the step of S1 establishing the first coordinate system, the first coordinate system is established at the tail end of the installed N+3 tube coupling 4.
In some embodiments of S1, as shown in
In the step of S2 distributing the feature points, as shown in
In some embodiments of S2, by measuring relative positions of the breakthrough points DS, DW, N+1S, N+1W, N+2S, N+2W with respect to the control point N+3D respectively, the coordinates of the breakthrough points DS, DW, N+1S, N+1W, N+2S and N+2W in the first coordinate system can be calculated, where coordinates of the breakthrough point DW in the first coordinate system are (x1, y1, z1), coordinates of the breakthrough point DS in the first coordinate system are (x2, y2, z2), coordinates of the breakthrough point N+1S in the first coordinate system are (x3, y3, z3), coordinates of the breakthrough point N+1W in the first coordinate system are (x4, y4, z4), coordinates of the breakthrough point N+2S in the first coordinate system are (x5, y5, z5) and coordinates of the breakthrough point N+2W in the first coordinate system are (x6, y6, z6).
In the step of S3 installing the N+2 tube coupling, a deviation between the N+2 tube coupling 3 and the N+3 tube coupling 4 is calculated by using the coordinates of the breakthrough points N+2S and N+2W in the first coordinate system, and an installing position of the N+2 tube coupling 3 is adjusted according to the calculated deviation between the N+2 tube coupling 3 and the N+3 tube coupling 4, so that the head end of the N+2 tube coupling 3 is precisely butted with the tail end of the N+3 tube coupling 4, thereby improving the installing accuracy of the N+2 tube coupling 3.
In some embodiments of S3, a method for calculating the deviation between the N+2 tube coupling 3 and the N+3 tube coupling 4 is as follows:
where, Δx1 is a deviation between the N+2 tube coupling 3 and the N+3 tube coupling 4 in the x-axis direction: Δy1 is a deviation between the N+2 tube coupling 3 and the N+3 tube coupling 4 in the y-axis direction; and Δz1 is a deviation between the N+2 tube coupling 3 and the N+3 tube coupling 4 in the z-axis direction.
In the step of S4 installing the N+1 tube coupling, the head end of the N+1 tube coupling 2 is precisely butted with the tail end of the installed N tube coupling 1; since the N+1 tube coupling 2 needs to be connected with the installed N+2 tube coupling 3, if the deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 is too large, the N+1 tube coupling 2 cannot be precisely butted with the N+2 tube coupling 3: accordingly, the deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 is calculated by using the coordinates of the breakthrough points N+1S and N+1W in the first coordinate system, to adjust the installing position of the N+1 tube coupling 2, so as to ensure that the deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 meets the requirement: it should be noted that the tail end of the N+1 tube coupling 2 is disposed near the tail end of the N+2 tube coupling 3, with a gap therebetween.
In some embodiments of S4, a method for calculating the deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 is as follows:
where, Δx2 is a deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 in the x-axis direction in the first coordinate system: Δy2 is a deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 in the y-axis direction in the first coordinate system; and Δz2 is a deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 in the z-axis direction in the first coordinate system.
In the above-mentioned installation method for the closure joint of the immersed tunnel, the push-out segment 5 is disposed in the N+1 tube coupling 2 and pushed out from the N+1 tube coupling 2 to butt with the tail end of the N+2 tube coupling 3 after the N+1 tube coupling 2 is installed: it should be noted that when the push-out segment 5 is pushed out, the push-out segment may have a large deviation from the N+1 tube coupling 2 or from the N+2 tube coupling 3, which will affect the effect of connection between the N+1 tube coupling 2 and the N+2 tube coupling 3: therefore, in the step of S5 pushing out the push-out segment, the deviation between the push-out segment 5 and the N+1 tube coupling 2 and the deviation between the push-out segment and the N+2 tube coupling 3 are respectively calculated by using the coordinates of the breakthrough point DS and/or DW in the first coordinate system, to guide the pushing process of the push-out segment 5 disposed inside the N+1 tube coupling 2 towards the N+2 tube coupling 3, thereby allowing the push-out segment to be precisely butted with the tail end of the N+2 tube coupling 3: it should also be noted that when the push-out segment 5 is pushed out, the tail end of the push-out segment 5 is butted with the tail end of the N+2 tube coupling 3, and the head end of the push-out segment 5 is still located in the N+1 tube coupling 2.
In some embodiments of S5, the deviation between the push-out segment 5 and the N+2 tube coupling 3 is calculated by using the coordinates of the breakthrough point DW in the first coordinate system, and the deviation between the push-out segment 5 and the N+1 tube coupling 2 is calculated by using the coordinates of the breakthrough point DS in the first coordinate system: specifically, a method for calculating the deviation between the push-out segment 5 and the N+2 tube coupling 3 is as follows:
In other embodiments of S5, the deviation between the push-out segment 5 and the N+1 tube coupling 2 and the deviation between the push-out segment and the N+2 tube coupling 3 are respectively calculated by using the coordinates of the breakthrough points DW and DS in the first coordinate system: specifically, a method for calculating the deviation between the push-out segment 5 and the N+2 tube coupling 3 is as follows:
In actual construction, the N+1 tube coupling 2 needs to be installed with reference to the already installed N tube coupling 1: in order to ensure the installing accuracy of the N+1 tube coupling 2 and the N tube coupling 1, in some embodiments of the installation method for the closure joint of the immersed tunnel, the method also comprises S10, establishing a second coordinate: distributing a control point ND at the tail end of the N tube coupling 1, and establishing the second coordinate system at the tail end of the N tube coupling 1: in the step of S2 distributing the feature points, by taking the control point ND as a reference point, relative positions of the breakthrough points N+1S and N+1W with respect to the control point ND are measured respectively, and converted into coordinates of the breakthrough points N+1S and N+1W in the second coordinate system, so as to calculate the deviation between the N+1 tube coupling 2 and the N tube coupling 1. The deviation between the N+1 tube coupling 2 and the N tube coupling 1 is calculated to adjust the installing position of the N+1 tube coupling 2.
In some implementations of S10, as shown in
In some embodiments of S4 installing the N+1 tube coupling, coordinates of the control point ND in the second coordinate system are (x7, y7, z7), and coordinates of the breakthrough points N+1S and N+1W in the second coordinate system are (x3′, y3′, z3′) and (x4′, y4′, z4′) respectively: a method for calculating the deviation between the N+1 tube coupling 2 and the N tube coupling 1 is as follows:
In some embodiments of the installation method for the closure joint of the immersed tunnel, the method further comprises S40, verifying the accuracy of the first coordinate system: measuring relative positions of the breakthrough points N+2S and N+2W with respect to the control point ND respectively, converting the relative positions into coordinates of the breakthrough points N+2S and N+2W in the second coordinate system, calculating a deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 by using the second coordinate system, and comparing the deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 obtained by using the second coordinate system with the deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 obtained by using the first coordinate system, to verify the accuracy of the deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 calculated by using the first coordinate system.
In some embodiments of S40, the coordinates of the breakthrough points N+2S and N+2W in the second coordinate system are (x5′, y5′, z5′) and (x6′, y6′, z6′) respectively, and a method for calculating the deviation between the N+1 tube coupling 2 and the N+2 tube coupling 3 by using the second coordinate system is as follows:
According to the installation method for the closure joint of the immersed tunnel, by establishing the first coordinate system at the N+3 tube coupling, and distributing the breakthrough points N+2S and N+2W respectively at the head end and the tail end of the N+2 tube coupling, the deviation between the N+2 tube coupling and the N+3 tube coupling is calculated by using the coordinates of the breakthrough point N+2S and N+2W in the first coordinate system, so as to guide the installing of the N+2 tube coupling: by distributing the breakthrough points N+1S and N+1W at the head end and the tail end of the N+1 tube coupling respectively, the deviation between the N+1 tube coupling and the N+2 tube coupling is calculated by using the coordinates of the breakthrough points N+1S and N+1W in the first coordinate system, so as to guide the installing of the N+1 tube coupling; and by distributing the breakthrough points DS and DW at the push-out segment, the deviation between the push-out segment and the N+1 tube coupling and the deviation between the push-out segment and the N+2 tube coupling are calculated by using the coordinates of the breakthrough points DS and DW in the first coordinate system, so as to adjust the pushing direction of the push-out segment, and allow the push-out segment to be precisely butted with the tail end of the N+2 tube coupling.
Embodiment 1
The above-mentioned installation method for the closure joint of the immersed tunnel will be described below in detail by taking an example in which coordinates of the control point N+3D in the first coordinate system are (x0, y, z0), coordinates of the breakthrough point DW in the first coordinate system are (x1, y1, z1), coordinates of the breakthrough point DS in the first coordinate system are (x2, y2, z2), coordinates of the breakthrough point N+1S in the first coordinate system are (x3, y3, z3), coordinates of the breakthrough point N+1W in the first coordinate system are (x4, y4, z4), coordinates of the breakthrough point N+2S in the first coordinate system are (x5, y5, z5), coordinates of the breakthrough point N+2W in the first coordinate system are (x6, y6, z6), coordinates of the control point ND in the second coordinate system are (x7, y7, z7), coordinates of the breakthrough point N+1S and NOW in the second coordinate system are (x3′, y3′, z3′) and (x4′, y4′, z4′) respectively. The installation method for the closure joint of the immersed tunnel comprises the following steps:
S1, establishing a first coordinate system: taking a point o at the tail end of the N+3 tube coupling 4 and a point o1 at the head end of the N+3 tube coupling 4, and establishing a three-dimensional rectangular coordinate system as the first coordinate system by taking the point o as an origin point of the first coordinate system, taking a straight line where the point o and the point o1 are located as an x axis of the first coordinate system and taking a straight line passing the point o and being perpendicular to a top surface of the N+3 tube coupling 4 as a z axis; taking a direction from the head end of the N+3 tube coupling 4 to the tail end of the N+3 tube coupling 4 as a positive direction of the x axis of the first coordinate system; and according to the origin point o, the x axis and the positive direction of the x axis of the first coordinate system, based on the left-hand rule, taking a straight line where the thumb of the left hand is located as a y axis of the first coordinate system, and taking a direction that the thumb of the left hand points to as a positive direction of the y axis of the first coordinate system.
S10, establishing a second coordinate system: taking a point o2 at the tail end of the N tube coupling 1 and the point o2′ at the head end of the N tube coupling 1, and establishing a three-dimensional rectangular coordinate system as the second coordinate system by taking the point o2 as an origin point of the second coordinate system, taking a straight line where the point o2 and the point o2′ are located as an x axis of the second coordinate system and taking a straight line passing the point o2 and being perpendicular to a top surface of the N tube coupling 1 as a z axis; taking a direction from the head end of the N tube coupling 1 to the tail end of the N tube coupling 1 as a positive direction of the x axis of the second coordinate system; and according to the origin point o2, the x axis and the positive direction of the x axis of the second coordinate system, based on the left-hand rule, taking a straight line where the thumb of the left hand is located as a y axis of the second coordinate system, and taking a direction that the thumb of the left hand points to as a positive direction of the y axis of the second coordinate system.
S2, distributing feature points: distributing breakthrough points N+1S and N+1W at the head end and the tail end of the N+1 tube coupling 2 respectively, distributing breakthrough points DS and DW at a head end and a tail end of a push-out segment 5 respectively, and distributing breakthrough points N+2S and N+2W at the head end and the tail end of the N+2 tube coupling 3 respectively: distributing a control point N+3D at the tail end of the N+3 tube coupling 4, and distributing a control point ND at the tail end of the N tube coupling 1; and by taking the control point N+3D as a reference point, coordinates (x1, y1, z1) of the breakthrough point DW in the first coordinate system, coordinates (x2, y2, z2) of the breakthrough point DS in the first coordinate system, coordinates (x3, y3, z3) of the breakthrough point N+1S in the first coordinate system, coordinates (x4, y4, z4) of the breakthrough point N+1W in the first coordinate system, coordinates (x5, y5, z5) of the breakthrough point N+2S in the first coordinate system, and coordinates (x6, y6, z6) of the breakthrough point N+2W in the first coordinate system are obtained, where coordinates of the control point N+3D in the first coordinate system are (x0, y, z0).
S3, installing the N+2 tube coupling: calculating deviations Δx1, Δy1 and Δz1 between the N+2 tube coupling 3 and the N+3 tube coupling 4 by using the coordinates of breakthrough points N+2S and N+2W in the first coordinate system, comparing Δx1, Δy1 and Δz1 with a difference value allowed by actual construction, if Δx1, Δy1 and Δz1 are all within the allowable construction error, it means that the N+2 tube coupling 3 is installed in place: if Δx1 and/or Δy1 and/or Δz1 exceed the allowable construction error, adjusting an installing position of the N+2 tube coupling 3 until Δx1, Δy1 and Δz1 are all within the allowable construction error, so as to allow the N+2 tube coupling 3 to be precisely butted with the N+3 tube coupling 4.
S4, installing an N+1 tube coupling: immersing the N+1 tube coupling 2 to the seabed and allowing the head end of the N+1 tube coupling 2 to be precisely butted with the tail end of the installed N tube coupling 1; calculating deviations Δx5. Δy5 and Δz5 between the N+1 tube coupling 2 and the N tube coupling 1 by using the second coordinate system, calculating deviations Δx2, Δy2 and Δz2 between the N+1 tube coupling 2 and the N+2 tube coupling 3 by using coordinates of the first coordinate system, comparing Δx2, Δy2, Δz2, →x5, Δy5 and Δz5 with a difference value allowed by actual construction respectively, if Δx2, Δy2, Δz2, Δx5, Δy5 and Δz5 are all within the allowable construction error, it means that the N+1 tube coupling 2 is installed in place: if Δx2 and/or Δy2 and/or Δz2 and/or Δx5 and/or Δy5 and/or Δz5 exceed the allowable construction error, then adjusting an installing position of the N+1 tube coupling 2 until Δx2, Δy2, Δz2 and Δx5, Δy5 and Δz5 are all within the allowable construction error, so as to allow the N+1 tube coupling 2 to be precisely installed.
S40, verifying the accuracy of the first coordinate system: calculating deviations Δx6, Δy6 and Δz6 between the N+1 tube coupling 2 and the N+2 tube coupling 3 by using the second coordinate system, and comparing Δx2, Δy2, Δz2 with Δx6, Δy6, Δz6, if difference values between Δx2 and Δx6, Δy2 and Δy6, Δz2 and Δz6 are within the allowable error range, indicating that the accuracy of the first coordinate system is high; if at least one of the difference values between Δx2 and Δx6, Δy2 and Δy6, Δz2 and Δz6 exceeds the allowable error range, indicating that the accuracy of the first coordinate system and/or the second coordinate system are/is low, which means that it is necessary to re-establish the first coordinate system and/or the second coordinate system to ensure the accuracy of the first coordinate system.
S5, pushing out a push-out segment: calculating a deviation between the push-out segment 5 and the N+1 tube coupling 2 and a deviation between the push-out segment 5 and the N+2 tube coupling 3 respectively by using the coordinates of the breakthrough points DS and DW in the first coordinate system, where the deviation between the push-out segment 5 and the N+2 tube coupling 3 is Δx3, Δy3, Δz3, and the deviation between the push-out segment 5 and the N+1 tube coupling 2 is Δx4, Δy4, Δz4; comparing Δx3, Δy3, Δz3, Δx4, Δy4, Δz4 with the allowable construction error respectively, and if Δx3, Δy3, Δz3, Δx4, Δy4, Δz4 are all within the allowable error range, pushing out the push-out segment 5 to butt with the tail end of the N+2 tube coupling 3: if Δx3 and/or Δy3 and/or Δz3 and/or Δx4 and/or Δy4 and/or Δz4 exceed the allowable error range, adjusting a position of the push-out segment 5 until Δx3, Δy3, Δz3, Δx4, Δy4, Δz4 are all within the allowable error range, so as to allow the push-out segment 5 to be precisely butted with the tail end of the N+2 tube coupling 3.
It should be noted that the range of the allowable construction error belongs to the common knowledge in the art, which is omitted here.
According to the installation method for the closure joint of the immersed tunnel, the deviation between the N+2 tube coupling and the N+3 tube coupling is calculated by using the coordinates of the breakthrough points N+2S and N+2W in the first coordinate system, to adjust the installing position of the N+2 tube coupling, so as to ensure that the N+2 tube coupling and the N+3 tube coupling are precisely installed; the deviation between the N+1 tube coupling and the N tube coupling is calculated by using the coordinates of the breakthrough points N+1S and N+1W in the second coordinate system, to adjust the installing position of the N+1 tube coupling, so as to ensure that the N+1 tube coupling and the N tube coupling are precisely installed: the deviation between the N+1 tube coupling and the N+2 tube coupling is calculated by using the coordinates of the breakthrough points N+1S, N+1W, N+2S and N+2W in the first coordinate system, to adjust the installing position of the head end of the N+1 tube coupling, so as to ensure that the tail end of the N+1 tube coupling and the tail end of the N+2 tube coupling are precisely aligned and close to each other, and further allow the push-out segment to be precisely butted with the N+2 tube coupling when the push-out segment is pushed out; and by using the coordinates of the breakthrough points DS, DW, N+1S, N+1W, N+2S and N+2W in the first coordinate system, the deviation between the push-out segment and the N+1 tube coupling and the deviation between the push-out segment and N+2 tube coupling are calculated to adjust the pushing-out direction of the push-out segment, so as to allow the push-out segment to be precisely butted with the N+2 tube coupling.
Finally, it is to be noted that, the embodiments are described progressively in this specification, with each embodiment focusing on the differences from the others, and the identical or similar parts among the embodiments can refer to each other.
The above embodiments are merely used for describing the technical solutions of the present application, rather than limiting the present application. Although the present application has been described in detail by preferred embodiments, it should be understood by a person of ordinary skill in the art that it is possible to make modifications to the specific implementations of the present application or equivalent replacements to some of the technical features without departing from the spirit of the technical solutions of the present application, and these modifications or equivalent replacements shall fall into the scope of the technical solutions sought to be protected by the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202310921919.3 | Jul 2023 | CN | national |
The present application is a continuation of international application PCT/CN2023/117659 filed on Sep. 8, 2023, which claims the priority of Chinese patent application No. 202310921919.3, filed to CNIPA on Jul. 26, 2023, and entitled “INSTALLATION METHOD FOR CLOSURE JOINT OF IMMERSED TUNNEL”, the entire contents of the above identified applications are incorporated herein by reference.
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| Number | Date | Country |
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| 112541218 | Mar 2021 | CN |
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| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2023/117659 | Sep 2023 | WO |
| Child | 18801756 | US |
