CN209854920U

CN209854920U - Flexible full-tension structure system

Info

Publication number: CN209854920U
Application number: CN201920358106.7U
Authority: CN
Inventors: 黄卓驹; 王俊鑫
Original assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Current assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2019-12-27
Anticipated expiration: 2029-03-20

Abstract

The utility model relates to a flexible full tension structure system, the structure system includes a plurality of vaulting poles and cable module, the cable module includes multiunit net unit, net in the net unit is cellular folded plate net, multiunit net unit the mutual staggered connection in the upper and lower both ends of each vaulting pole in summit of cellular folded plate net, cellular folded plate net is formed by connecting a plurality of cables, and is 120 degrees contained angles setting between two liang of cables. Compared with the prior art, the utility model has the advantages of construction convenience, application scope are wide.

Description

Flexible full-tension structure system

Technical Field

The utility model belongs to the technical field of building structure technique and specifically relates to a flexible full tension structure system is related to.

Background

The "Tensegrity" (Tensegrity) concept is the invention of the american famous architect fullerene (r.b. fuller), which refers to the condensation of "tension" ("tension") and "unity" ("integration"), the creation of which is inspired by nature, fullerene assumes that the operation of the universe is performed according to the Tensegrity principle, i.e. the gravitational force is a balanced tension net, while the individual stars are isolated points in this net, according to which a Tensegrity structure can be defined as a self-supporting, self-stressed spatial lattice structure consisting of a set of discrete compression members and a set of continuous tension elements, the rigidity of the structure is provided by the balanced prestress between tension and compression elements, before the prestress is applied, the structure has almost no rigidity, and the magnitude of the initial prestress plays a decisive role in the appearance and the rigidity of the structure, due to the inherent natural laws of Tensegrity structures, the characteristics of materials and sections are utilized to the utmost extent, and the ultra-large span building can be built by using steel materials as few as possible.

The existing general tension integral structure is mostly in an orthogonal bidirectional mode, or forms a self-balancing unit type structure, or is in an annular cable truss structure mode. These configurations are limited in that they can be adapted to certain specific planar shapes, such as rectangular or circular planar shapes.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a flexible full-tension structural system for overcoming the above-mentioned drawbacks of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a flexible full-stretching structure system, includes a plurality of vaulting poles and cable module, the cable module includes multiunit net unit, the net among the net unit is cellular folded plate net, multiunit net unit the summit of cellular folded plate net is crisscross each other to be connected in the upper and lower both ends of each vaulting pole.

Furthermore, the honeycomb folded plate grid is formed by connecting a plurality of inhaul cables.

Furthermore, the two inhaul cables are arranged at an included angle of 120 degrees.

Further, the honeycomb folded plate grids are hexagonal honeycomb folded plate grids.

Further, the grid cells are in three groups.

Further, the basic structural units of the flexible full-tension structural system in the top view direction present a triangular structure.

Further, the basic structural unit of the flexible full-tension structural system in the side-looking direction presents a triangular structure.

Further, the stay bar and the inhaul cable are provided with pretension.

Compared with the prior art, the utility model provides a novel full stretch-draw system that the three-dimensional was arranged keeps its range of application of extension simultaneously of traditional stretch-draw overall structure's advantage, has following beneficial effect:

1. the utility model discloses application scope is wide, can be applicable to in all kinds of application scenes such as large-span roof structure, curtain structure.

2. Compare traditional rigid structure system, the utility model discloses have high bearing efficiency, the dead weight is very light.

3. Because the basic shape unit of the structure is triangular, is a simplex shape in the mathematical sense and can approach to planes of any shape theoretically, compared with a general bidirectional or annular stretching integral structure, the structure system is suitable for various plane types including circles, hexagons and triangles.

4. The utility model discloses a cable structure, easy shrink is folding, can process in advance at the mill and accomplish, transports the site operation installation, and the assembly ization, industrialization degree are high.

Drawings

FIG. 1 is a schematic view of a geometric model of the present invention;

fig. 2 is a schematic three-dimensional structure of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a side view of the present invention;

FIG. 5 is an exploded view of the present invention;

fig. 6 is a schematic diagram of the initial prestress distribution introduced in the example of the present invention;

FIG. 7 is a schematic diagram of a state of completion of the structure production in an example of the present invention;

fig. 8 is a schematic view of the structure unfolding fixing boundary completion state in the embodiment of the present invention;

fig. 9 is the utility model discloses the structure stretch-draw is accomplished in the example, and the state schematic diagram finishes in the construction.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1-2, this embodiment implements a flexible full-tension structural system, including a plurality of struts 1 and a cable module, where the cable module includes a plurality of sets of grid cells, the grid in the grid cells is a cellular folded plate grid, and vertices of the cellular folded plate grid of the plurality of sets of grid cells are connected to upper and lower ends of each strut in a staggered manner. The honeycomb folded plate grid is formed by connecting a plurality of inhaul cables 2, and an included angle of 120 degrees is formed between every two inhaul cables. The flexible full-tension structure system is only composed of a stay cable bearing tension force and a small number of support rods bearing pressure, the structure system does not have bearing capacity, and can bear load after being tensioned to form pretension. The stay bar 1 and the stay cable 2 are made of steel structures.

As shown at a in fig. 2, the grid of honeycomb flaps is a grid of hexagonal honeycomb flaps.

In this embodiment, the grid cells are divided into three groups, and the three groups are interleaved with each other to form a complete structural system. As shown in fig. 5, the flexible full-tension structural system 10 of the present embodiment is composed of grid cells 11, 12, and 13 and strut groups 14.

As shown in fig. 3, the flexible full-tension structure has a triangular structure in a basic structural unit in a top view direction. As shown in fig. 4, the flexible full-tension structure exhibits a triangular structure in a basic structural unit in a side view direction.

The rigidity and the bearing mechanism of the system accord with the stress principle of a general tensioning integral structure, and the additional rigidity generated by the cable or the rod is as follows:

wherein N is the axial force of the cable or rod and L is the cable or rod length.

Make the rigidity matrix of the original cable pole consist of

Become into

Wherein A is the member cross section and E is the material modulus of elasticity.

Thus, the rigidity of the structure is significantly increased by the large pretension force N in the case of a small cross-sectional area a. Thereby fully utilizing the materials and obtaining higher bearing capacity.

For the pretension design method of the flexible full-tension structure system, a matrix balancing method or a finite element method is adopted to solve a balancing matrix by presetting the initial pretension of certain cable pole units, and the solution of an equation is obtained, so that the structure pretension distribution is determined. For the novel structural system, the pretension meeting the balance is not unique, and is determined by a minimum strain energy criterion or a minimum variance principle after an expected prestress distribution is given. The structure of the initial pre-stress distribution introduced is schematically shown in fig. 6.

The construction method of the flexible full-tension structure system comprises the following steps:

21) pre-processing a stay bar and a stay cable module, and transporting to a construction site;

22) fixing the boundary of the structure on a construction site, and splicing the stay bar and the inhaul cable module, as shown in fig. 7-8;

23) the designed prestress is introduced by a method of extending the stay bar or tensioning a part of the stay cable, and the construction is finished, as shown in fig. 9.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a flexible full-stretching structural system, its characterized in that includes a plurality of vaulting poles and cable module, the cable module includes multiunit net unit, the net among the net unit is cellular folded plate net, multiunit net unit the top point of cellular folded plate net is crisscross each other and is connected in the upper and lower both ends of each vaulting pole.

2. The flexible full tensioning structural system according to claim 1, wherein the grid of honeycomb flaps is connected by a plurality of ripcords.

3. The flexible full tensioning structural system according to claim 2, wherein the two bracing cables are arranged at an included angle of 120 degrees.

4. A flexible full tensile structural system according to claim 1 or 2 wherein said grid of cellular flaps is a grid of hexagonal cellular flaps.

5. The flexible full tensioning architecture according to claim 1, wherein the grid cells are in three groups.

6. The flexible full tensioning structural system according to claim 1, wherein the basic structural units of the flexible full tensioning structural system in the top view direction present a triangular structure.

7. The flexible full-tension structural system according to claim 1, wherein the basic structural units of the flexible full-tension structural system in the side-view direction present a triangular structure.

8. The flexible full tensioning structural system according to claim 2, wherein the stay and the tension cable are provided with pretension.