DISCHARGE JET AND PILE-PLANK APPLYING THE SAME

Abstract

Disclosed are a discharge jet and a pile-plank applying the same. The discharge jet may include a discharge jet body; the body is connected with a water inlet pipe; the shape of the body is basically the same as the pile-plank; a diameter of the discharge jet is in the range of 50 mm-500 mm; water jet holes are formed in the body; the diameter of each water jet holes is in the range of 1.5 mm-15 mm; each space between adjacent water jet holes is in the range of 8 mm-80 mm; and the maximum included angle formed by the water jet holes is in the range of 30°-180°. The discharge jet and a method for driving the pile-plank into the earth by the discharge jet have the advantages of wide application range, high construction efficiency and low cost.

Description

TECHNICAL FIELD

The present disclosure relates to the technical field of construction of pile-planks which can be applied to water conservancy projects such as dam engineering, port and waterway engineering, artificial water island, road traffic bridge, water gate, culvert and conveyance canal as well as to reinforced concrete under-earth whole projects, and particularly, to a discharge jet and a pile-plank applying the same.

BACKGROUND

In the related art, various discharge jets which drive the earth by employing a hydraulic advancement guiding pile generally have the following defects and shortcomings: 1) the structure and shape are simple and therefore cannot meet the needs of multiple changeable structure and shape pile-planks; 2) the diameter of the discharge jet, the angle between discharge holes, and the distance between the discharge holes and the earth cannot meet the requirement of the pile-plank to drive the earth; and 3) the ability of the discharge jet to pass through an underearth obstacle is poor when confronted with an underearth obstacle, for example, in Chinese Utility Module application No. 200610070402.4, in plank insertion, when there exists the underearth obstacle, a conical pile-plank needs to be prefabricated in advance, thereby overcoming a resistance by means of the conical pile-plank. However, the conical pile-plank has an inconvenience no matter in construction or in transportation because the position of the underearth obstacle cannot be foreknown ahead of time, and the conical pile-plank as required also cannot be definitely prefabricated in water conservancy construction.

SUMMARY

The present disclosure is intended to overcome the defects of the related art and provides a discharge jet. First of all, the discharge jet conforms to the shape of a pile-plank. Secondly, parameters of the discharge jet are set so as to improve the capability of the water jet and increase the penetrating power of the pile-plank. And lastly, when there is an obstacle in pile-plank construction, a water jet head may be fixed on the bottom of the pile-plank additionally so as to increase the penetrating power to the obstacle. Technical solutions adopted by the present disclosure are as follows: a discharge jet may include a discharge jet body, the body being connected with a water inlet pipe, and the shape of the body is basically the same as a pile-plank; the diameter of the discharge jet is in the range of 50 mm-500 mm; water jet holes are formed in the body; the diameter of each water jet hole is in the range of 1.5 mm-15 mm; each space between adjacent water jet holes is in the range of 8 mm-80 mm; and the maximum included angle formed by the water jet holes is in the range of 30°-180°.

Further, according to the technical character of the present disclosure, the area, cut by each of the water jet holes, of the earth is smaller than 64 cm², and an internal water inlet pressure of the body is in the range of 0.2 MPa-6 MPa.

Further, according to the technical character of the present disclosure, the pile-plank is of an I shape, a T shape, an H shape, a tubular shape, a double cross shape, a cylindrical shape, a square shape or a rectangular shape.

Further, according to the technical character of the present disclosure, the discharge jet may further include a water jet head; the water jet head may include a connecting portion fixedly connected to the water jet head, and may further include a water jet branch pipe communicating with the discharge jet; and the water jet holes are formed in a whole circumferential direction of the water jet branch pipe.

Further, according to the technical character of the present disclosure, the water jet head is provided with a conical end portion.

Further, according to the technical character of the present disclosure, the shape of the connecting portion is determined by the shape of the discharge jet body.

Further, according to the technical solution of the present disclosure, a pile-plank is further provided, and an inside of the pile-plank is provided with a water inlet pipe, and a lower part of the pile-plank is provided with the above-mentioned discharge jet.

Further, according to the technical character of the present disclosure, the discharge jet may further include a water jet head; the water jet head may include a connecting portion fixedly connected to the water jet head, and may further include a water jet branch pipe communicating with the discharge jet; and the water jet holes are formed in a whole circumferential direction of the water jet branch pipe.

The beneficial effects of the present disclosure include but not limited to: the discharge jet disclosed by the present disclosure overcomes the shortcoming that when there is an underearth obstacle with a relatively large resistance in hydraulic plank insertion, a conical pile-plank needs to be prefabricated ahead of time in the related art. By means of selection and matching of parameters such as sizes of the water jet holes, hole distances and diameter of the discharge jet, the acting force of the driving pile-plank is effectively increased. Particularly, by virtue of the water jet head which may be fixedly connected in site, site construction is more convenient, the transportation expenses of a special pile prefabricated out of the site are reduced and the construction time is saved. With the water jet holes distributed circumferentially at 360° on the water jet head, the underearth space can be expanded to push the obstacle to the earth outside the pile-plank, and the capability of the pile-plank to pass through the earth having the obstacle is greatly strengthened. When there are a special earth and a special condition in construction, a hydraulic vibration hammer is further arranged on top of the pile-plank, such that the pile driving speed is improved by combining with hydraulic vibration and hydraulic cutting. Therefore, the discharge jet and a method for driving the pile-plank into the earth by the discharge jet have the advantages of wide application range, high construction efficiency and low cost.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic diagram of a pile-plank of the present disclosure.

FIG. 2 is a structural schematic diagram of a water jet head of the present disclosure.

FIG. 3 is the schematic diagram of a discharge jet coupled with a I shape pile-plank.

FIG. 4. is the schematic diagram of a discharge jet coupled with a T shape pile-plank.

FIG. 5. is the schematic diagram of a discharge jet coupled with a H shape pile-plank.

FIG. 6. is the schematic diagram of a discharge jet coupled with a tubular shape pile-plank.

FIG. 7. is the schematic diagram of a discharge jet coupled with a double cross shape pile-plank.

FIG. 8. is the schematic diagram of a discharge jet coupled with a cylindrical shape pile-plank.

FIG. 9. is the schematic diagram of a discharge jet coupled with a square or rectangular shape pile-plank.

FIG. 10. is the schematic diagram of a distribution of water jet holes.

FIG. 11 is the schematic diagram of water jet holes on a discharge jet.

Wherein, 1 is a discharge jet, 2 is a water inlet pipe, 3 is a pile-plank, 4 is a hoisting ring of the pile-plank, 5 is a hydraulic vibration hammer, 11 is a discharge jet body, 12 are water jet holes, 13 is a water jet head, 14 is a connecting portion, 15 is a water jet branch pipe , and 16 is a conical end portion.

wherein, the water jet holes are omitted from FIGS. 3-9.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure is intended to overcome the defects of the related art and provides a discharge jet. First of all, the discharge jet conforms to the shape of a pile-plank. Secondly, parameters of the discharge jet are set so as to improve the capability of the water jet and increase the penetrating power of the pile-plank. And lastly, when there is an obstacle in pile-plank construction, a water jet head may be fixed on the bottom of the pile-plank additionally so as to increase the penetrating power to the obstacle.

Technical solutions adopted by the present disclosure are as follows: a discharge jet may include a discharge jet body 11, the body 11 being connected with a water inlet pipe 2, and the shape of the body 11 is basically the same as a pile-plank; the diameter of the body 11 is in the range of 50 mm-500 mm; water jet holes 12 are formed on the body 11; the diameter of each water jet hole i12s in the range of 1.5 mm-15 mm; each distance between two adjacent water jet holes is in the range of 8 mm-80 mm; and the maximum included angle formed by the water jet holes 12, shown as a in FIG. 10, is in the range of 30° -180°.

Further, according to the technical character of the present disclosure, the area, cut by each of the water jet holes 12, of the earth is smaller than 64 cm², and an internal water inlet pressure of the body is in the range of 0.2 MPa-6 MPa.

Further, according to the technical character of the present disclosure, the pile-plank is of an I shape, a T shape, an H shape, a tubular shape, a double cross shape, a cylindrical shape, a square shape or a rectangular shape.

Further, according to the technical character of the present disclosure, the discharge jet 1 may further include a water jet head 13; the water jet head 13 may include a connecting portion 14 fixedly connected to the discharge jet 1, and may further include a water jet branch pipe 15 communicating with the discharge jet 1; and the water jet holes 12 are formed in a whole circumferential direction of the water jet branch pipe 15.

Further, according to the technical character of the present disclosure, the water jet head 13 is provided with a conical end portion 16, and the water jet holes 12 are formed in a whole circumferential direction of the conical end portion 16.

Further, according to the technical character of the present disclosure, the shape of the connecting portion 14 is determined by the shape of the discharge jet body 11.

Further, according to the technical solution of the present disclosure, a pile-plank is further provided, and an inside of the pile-plank is provided with a water inlet pipe, and a lower part of the pile-plank is provided with the above-mentioned discharge jet.

Further, according to the technical character of the present disclosure, the discharge jet may further include a water jet head; the water jet head may include a connecting portion fixedly connected to the water jet head, and may further include a water jet branch pipe communicating with the discharge jet; and the water jet holes are formed in a whole circumferential direction of the water jet branch pipe.

The present disclosure further discloses a pile-plank, wherein the water inlet pipe 2 is provided in said pile-plank, and the discharge jet is provided thereunderneath. Preferably, the discharge jet consists of the water jet head 13 which is fixed to the connecting portion of the discharge jet, and the water jet branch pipe which is connected to the discharge jet, wherein water jet holes are provided to said water jet branch pipe.

The present disclosure further discloses a method for driving the pile-plank into the earth, which may include the following steps.

In step 1), the pile-plank is prefabricated, and the discharge jet is arranged at the bottom of the pile-plank.

In step 2), the pile-plank is hoisted by a hoisting device, and a flowing medium is charged to a water inlet pipe, wherein the medium is ejected out from the water jet holes, while the pile-plank is going down gradually and drives into the earth, thereby accomplishing plank insertion.

In step 3), when there is a condition that the earth structure is complex and it is difficult to accomplish the plank insertion by virtue of the discharge jet, the pile-plank is hoisted out of water, and the water jet head is fixed on the discharge jet in site, and the water jet holes on the water jet head jets the water to all sides according to a 360° circumferential direction.

To increase the water jet capability, a hydraulic vibration hammer 5 may further be added on top of the pile-plank.

The water jet head and the discharge jet can be connected via a welding method.

Of course, the above description is not intended to limit the present disclosure herein. The present disclosure is not merely limited to the above examples. Any changes, modifications, additions or replacements made by those of ordinary skill in the art within the substantial scope of the present disclosure shall fall within the protection scope of the present disclosure.

Claims

1. A discharge jet, comprising a discharge jet body, the body being connected with a water inlet pipe, wherein the shape of the body is basically the same as a pile-plank; the diameter of the discharge jet is in the range of 50 mm-500 mm; water jet holes are formed in the body; the diameter of each water jet hole is in the range of 1.5 mm-15 mm; each space between adjacent water jet holes is in the range of 8 mm-80 mm; and the maximum included angle formed by the water jet holes is in the range of 30°-180°.

2. The discharge jet according to claim 1, wherein the area, cut by each of the water jet holes, of the earth is smaller than 64 cm2, and an internal water inlet pressure of the body is in the range of 0.2 MPa-6 MPa.

3. The discharge jet according to claim 1, wherein the pile-plank is of an I shape, a T shape, an H shape, a tubular shape, a double cross shape, a cylindrical shape, a square shape or a rectangular shape.

4. The discharge jet according to claim 1, wherein the discharge jet further comprises a water jet head; the water jet head comprises a connecting portion fixedly connected to the water jet head, and further comprises a water jet branch pipe communicating with the discharge jet; and the water jet holes are formed in a whole circumferential direction of the water jet branch pipe.

5. The discharge jet according to claim 4, wherein the water jet head is provided with a conical end portion.

6. The discharge jet according to claim 4, wherein the shape of the connecting portion is determined by the shape of the discharge jet body.

7. A pile-plank, wherein an inside of the pile-plank is provided with a water inlet pipe, and a lower part of the pile-plan is provided with a discharge jet according to claim 1.

8. The guiding pile-plank according to claim 7, wherein the discharge jet further comprises a water jet head; the water jet head comprises a connecting portion fixedly connected to the water jet head, and further comprises a water jet branch pipe communicating with the discharge jet; and water jet holes are formed in a whole circumferential direction of the water jet branch pipe.

9. A method for driving a guiding pile-plank into the earth, comprising: 1) prefabricating the pile-plank, and arranging a discharge jet at the bottom of the pile-plank; and2) hoisting the pile-plank by a hoisting device, and injecting flowing medium to a water inlet pipe, wherein the medium will eject out from the water jet holes, and then the pile-plank goes down gradually to get into the earth, thereby accomplishing plank insertion; andwherein the discharge jet is the discharge jet according to claim 1.

10. The method according to claim 9, further comprising: 3) when there is a condition that the earth structure is complex and it is difficult to accomplish the plank insertion by virtue of the discharge jet, hoisting the pile-plank out of the water, and fixing the water jet head and the discharge jet in site; andwherein the water jet head comprises a connecting portion and a water jet branch pipe, the connecting portion is fixedly connected to the water jet head, and the water jet branch pipe is communicated with the discharge jet, and the water jet holes are formed in a whole circumferential direction of the water jet branch pipe.

11. The method according to claim 10, further comprising: providing a hydraulic vibrating hammer connection; wherein the hydraulic vibrating hammer connection is positioned on top of the pile-plank, so as to accelerate a pile driving speed.

12. The method according to claim 9, further comprising: providing a hydraulic vibrating hammer connection; wherein the hydraulic vibrating hammer connection is positioned on top of the pile-plank, so as to accelerate a pile driving speed.