In the following detailed description of the embodiments, reference is made to the accompanying drawings which form a part hereof, and in which are shown by way of illustrations. It is to be understood that features of the various described embodiments may be combined, other embodiments may be utilized, and structural changes may be made without departing from the scope of the present disclosure. It is also to be understood that features of the various embodiments and examples herein can be combined, exchanged, or removed without departing from the scope of the present disclosure.
Vertical Living: A Fact of Life
The number of high-rise buildings has tripled in the past 30 years. In 1982 the amount of completed high-rise buildings was 2,091, in 1992 it was 3,048, in 2002 it was 4,306 and this year, 2012, we have 7,409 and the number is increasing rapidly all over the world. (Skyscrapercity, 2012).
The world has experienced unprecedented urban growth in recent decades. In 2008, for the first time, the world's population was evenly split between urban and rural areas. There were more than 400 cities with over 1 million inhabitants and 19 cities over 10 million. Developed nations were about 74% urbanized while 44% of the inhabitants of less developed countries lived in urban areas. However, urbanization is occurring rapidly in many less developed countries. It is expected that 70% of the world population will be urbanized by 2050 and most of that urban growth will occur in less developed countries. (Population Reference Bureau, 2012)
In 1950, 79% of the population of the UK lived in cities, already a large figure, but one which is set to rise to 92.2% by 2030. Elsewhere, China's percentage rose from 13% to 40.4% between the years 1950-2005 and is predicted to rise to 60.3% by 2030. But it's Botswana that has experienced the largest influx. Next year, 61.2% of its population are expected to live in urban areas yet back in 1950 only 2.7% of Botswanans lived in cities. (Data from Guardian, 2012)
In China and South East Asia many mega cities are being built and the number of skyscrapers is constantly increasing: vertical living is and will continue to be a fact of life. Efficient highrise buildings that save energy and space are in demand more than ever before. The Articulated Funiculator and the tubed mega frame is one solution to meet this growing demand. Table 1 below itemizes general information for 10 high-rise buildings and provides an overview of current tall buildings with usable floor area ratio is defined as the floor plate area minus the core area minus jumbo columns:
Rethinking Vertical Transportation
The skyscraper was born with the invention of the elevator in the 1850s and the electric elevator in 1880s. The concept of transporting people and cargo between floor levels was innovative and propelled the development of the skyscraper. As buildings grew in height, so did the number of elevators and the concept of clumping the elevators into a central lobby was introduced. Banking elevators improved efficiency and reduced wait times. Elevator speeds increased over time but the original concept of a single box inside a vertical shaft remained the same. In tall and super tall buildings this concept of vertical transportation requires many elevators and shafts and this demand diminishes the amount of leftover rentable/sellable floor space. This drawback is compounded by longer wait/travel times and higher energy consumption. It appears that as the height of buildings increase the current concept of vertical transportation needs to be rethought.
Tall and super tall buildings can be analogized to vertical cities. In a horizontal city it is common to have residences, offices, hotels, shopping malls, movie theaters, hospitals and the like and it is common to use buses and subways as a means of transportation.
The above discussion in regards to vertical transportation needs in buildings located above ground is also applicable to underground vertical transportation needs in, for example, underground mining operations and underground subway stations.
Articulated Funiculator Concept
The Articulated Funiculator (
More particularly, view 1-1 of the articulated funicular 100 of
View 1-2 of the articulated funicular 100 of
The looping configurations can vary (
Train Concept
Aspects of the Articulated Funiculator concept involve a series of trains made of train cars and the train cars house the passenger carriages and the carriage frames. The Articulated Funiculator may be designed so that the passengers remain standing even though the train alignment transitions from horizontal to vertical. This means that the carriages will need to pitch inside the carriage frames. In addition, the Articulated Funiculator may move in such a way as to allow for the transition alignments at the tops and bottoms of buildings and underground shafts.
Movement studies of the transitions at the top and bottom of the buildings shows that a passenger carriage could experience rotation around three axes, pitch, roll and yaw (See
It seems simpler to implement the transition motion in the vertical portions of the alignments rather than in the curves. This eliminates the need for the carriages to yaw. It also makes sense to take the roll motion between the train cars instead of in the carriages. This could be done with coupling mechanisms between the train cars that swivel. A possible result is a train with barrel shaped carriage frames with cuboid carriages (
More particularly,
A carriage frame height and width of 2.2 meters results in a carriage frame diameter of 3.11 meters based on geometry and a total carriage frame outer diameter of 3.5 meters is shown. A total frame length of 3.5 meters is also shown and results in a square train cross-section. Eventual carriage sizes will be sized to match the building and underground shaft configurations and the passenger/cargo flow demands at hand.
Movement Strategies
Pitch and roll requirements for single, even and odd loop configurations are shown in
Acceleration and Velocity Strategies
The recommended fastest acceleration on the vertical legs is lg. This would result in a 0 g environment on the fall accelerations and the rise decelerations and a 2 g environment on the Fall decelerations and the Rise accelerations, as illustrated in
It is obvious that a 1 g environment would exceed the comfort level of some passengers so studies would need to be conducted to determine the maximum usable acceleration.
The cycle time between trains can be approximated for the 250 meter example. It is estimated that passenger unloading and loading of the trains at the stations could take between 20 and 30 seconds. It would also take about 5 seconds for the trains to move from the stations and position vertically before the rise/fall accelerations. This, plus the 10 second rise/fall, adds up to an estimated cycle time of 1 minute between trains at peak usage times. Train movements and cycle times can be reduced for off peak times.
Power/Braking Cogs
The Articulated Funiculator is a series of trains connected together with cables or some other medium. The cables span between the trains and are looped around cogs where the alignments transition from horizontal at the stations to the vertical rises/falls, as shown in
More particularly,
Dynamic Braking, Energy Storage and Power Extraction
When the down-bound payloads are heavier than the up-bound the Articulated Funiculator captures the energy from braking the trains, dynamic braking, and stores it. The stored energy is then used to accelerate the Articulated Funiculator when the up-bound payloads are heavier than the down-bound. The capture and reuse of energy makes the Articulated Funiculator sustainable. For example, as lunchtime approaches most passengers will travel down the building and the energy needed to brake the Articulated Funiculator will be stored and used to power passengers up the building after lunch.
Prototype Building
To further explain the Articulated Funiculator a prototype building is shown in
Station Concept
Stations for Articulated Funiculator may be 10 meters wide, wall centerline to wall centerline, and 3 stories deep, as enabled in
More particularly,
Structural Compatibility
The Articulated Funiculator lends itself to an efficient structural system well adapted to tall thin skyscrapers and high strength concrete. It makes sense to use the vertical corridors that house the Articulated Funiculator as the super structure as is common with central cores. The vertical legs can be, for example, 6 meters wide, wall centerline to wall centerline, and 10 meters long. This gives 8.5 meters by 4.5 meters inside clear dimensions (1.5 meter thick walls) and fits the 3.5 meter by 3.5 meter train cross-sections. It also makes sense to use the horizontal stations as the super structural as is common with outriggers. The combination of the vertical and horizontal tubes forms a tubed mega frame. Mega cross tubes can be placed at intermediate elevations between the stations and at the top of the building for structural performance. These intermediate cross tubes may be at elevations 78 meters, 264 meters, 449 meters and 615 meters. The same structural system is used in the perpendicular direction and the symmetry gives rise to the 3-D tubed mega frame, referring again to
The length of the Articulated Funiculator is a function of the number of cars in the trains and this length sets the minimum width of the building in the direction of the stations and locates one set of the vertical legs of the tubed mega frame.
The tubed mega frame lends itself to a variety of floor plate shapes and sizes.
Usable floor area ratio is defined as the floor plate area minus the core area minus jumbo columns. The Articulated Funiculator occupies half the area of two of the vertical legs and it is expected that the other half of these shafts will be used as duct space. It makes sense to house the conventional elevators, stairs and ductwork in the remaining two legs. Placing all of the vertical transportation and ductwork inside the four legs of the structure leaves the rest of the floor plate completely open and results in high usable floor space ratios.
Referring to
Referring to
Referring to
Vertical Transportation Plan
The vertical transportation plan is a combination of one Articulated Funiculator with three loops and four stations and conventional elevators that run between the stations as described in
There may be 35 inhabitable floors and 2 mechanical floors and 160 meters between stations. In this configuration, it is expected that about 6 elevators will be needed between the stations and 4 above the highest station. This results in a total of 22 elevators for the building.
Structural Performance
The tubed mega frame is an efficient structure because almost all of the loads are carried by the four vertical legs that are set at the exterior faces of the building.
The super structure has seven vertical zones and the wall thicknesses step from 1.50 meters at the base to 0.30 meters at the crown. Structural analysis runs using ETABS and a wind speed of 83 mph (37.1 m/s) indicates that a concrete strength of 60-70 MPa with minimal reinforcing ratios.
Five modes shapes and periods are shown in
Wind speeds of 77.5 mph (34.6 m/s) result in maximum inter-story drift ratios of about H/360 in the 40 meter direction and H/540 in the 45 meter direction using a modulus of elasticity of 50.0 GPa.
Architectural Programs
The removal of the central core creates the potential for new and exciting programs that have not yet been incorporated into tall thin skyscrapers. Because the floor plates are open it is possible to program concert halls, conference rooms, theaters and swimming pools into the body of the building.
The tubed mega frame offers flexible architectural configurations and can support many forms and shapes as illustrated in
Vertical living is and continues to be a fact of urban life and thus efficient and sustainable solutions for tall thin skyscrapers are needed. The goal of the Articulated Funiculator and the tubed mega frame is to increase efficiency and sustainability and to assist in the development of tall thin skyscrapers. Vertical transportation is a reality of human life and thus efficient and sustainable solutions for vertical transportation in tall buildings, underground mining operations and underground subway stations are needed.
Aspects or embodiments of the Articulated Funiculator or the Tubed Mega Frame or both, may:
The Articulated Funiculator may provide an alternative to conventional elevators in tall buildings, underground mines and underground subway stations and is ideally suited for any situation where there is a need to move masses of people or cargo up or down. The Articulated Funiculator can reduce the amount of conventional elevators, reduce the number of conventional elevator shafts, reduce wait and cycle times, increase the speed of passenger and cargo conveyance, reduce the energy costs associated with vertical transportation due to energy capture and reuse and increase rentable/sellable floor space in tall buildings. High speeds, large passenger/cargo volumes and recyclable energy makes the Articulated Funiculator the way of the future. It is time for a new generation of elevator systems to take a step forward.
Binder, G., 2006, 101 of the World's Tallest Buildings. Images Publishing.
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The illustrations, examples, and embodiments described herein are intended to provide a general understanding of the structure of various embodiments. The illustrations are not intended to serve as a complete description of all of the elements and features of apparatus and systems that utilize the structures or methods described herein. Many other embodiments may be apparent to those of skill in the art upon reviewing the disclosure. Other embodiments may be utilized and derived from the disclosure, such that structural and logical substitutions and changes may be made without departing from the scope of the disclosure. Moreover, although specific embodiments have been illustrated and described herein, it should be appreciated that any subsequent arrangement designed to achieve the same or similar purpose may be substituted for the specific embodiments shown.
This disclosure is intended to cover any and all subsequent adaptations or variations of various embodiments. Combinations of the above examples, and other embodiments not specifically described herein, will be apparent to those of skill in the art upon reviewing the description. Additionally, the illustrations are merely representational and may not be drawn to scale. Certain proportions within the illustrations may be exaggerated, while other proportions may be reduced. Accordingly, the disclosure and the figures are to be regarded as illustrative and not restrictive.
The present application is a continuation of and claims priority to U.S. application Ser. No. 14/397,025 filed on Oct. 24, 2014, and entitled “ARTICULATED FUNICULATOR”, which in turn claims priority to International Patent Application No. PCT/EP2012/005177, filed on Dec. 15, 2012, and entitled “ARTICULATED FUNICULATOR”, which in turn claims priority to European Patent Application 12003610.8, filed on May 9, 2012 and to U.S. Provisional Patent Application No. 61/687,450, filed on Apr. 26, 2012, all of which are incorporated by reference herein in their entireties.
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