Pipe truss framework membrane structure suitable for soft soil foundation

Abstract

The invention belongs to the technical field of building structures, and particularly relates to a pipe truss framework membrane structure suitable for a soft soil foundation, which comprises two pipe truss end modules, a plurality of pipe truss standard modules and PE membrane structure modules, the pipe truss end modules are located at the two ends of the structure, the multiple pipe truss standard modules are arranged between the two pipe truss end modules, the pipe truss end modules and the pipe truss standard modules are not connected, the multiple pipe truss standard modules are not connected, and the bottoms of the pipe truss end modules and the bottoms of the pipe truss standard modules are connected with concrete short columns through pin shafts. The PE film structure modules are arranged outside the pipe truss end modules and the pipe truss standard modules in a covering mode and used for connecting the pipe truss end modules and the multiple pipe truss standard modules to form a main space structure, the structure is high in support displacement resistance, short in construction period, good in lighting performance and high in corrosion resistance, the cost of a building structure can be effectively reduced, and the construction period is shortened. And better economic benefits and social benefits are obtained.

Description

Technical Field

[0001] The present invention belongs to the technical field of building structures, and particularly relates to a pipe truss skeleton membrane structure applicable to soft soil foundations. Background Art

[0002] Many domestic yard enclosure projects are built in coastal areas. The yard sites are mostly reclaimed from the sea and belong to soft soil foundations. After the yard is enclosed, under the dual action of the stacking load and the upper structure load, the foundation will undergo uneven settlement, and the foundation will produce seat displacement, which will have an adverse impact on the upper steel structure. At present, for such yard enclosures, most adopt reticulated shell structures, and the enclosure materials adopt metal roof panels. The above buildings are sensitive to seat displacement and have high requirements for the foundation. In order to strictly limit the seat displacement, pile foundations must be used, so the construction cost is relatively high. Summary of the Invention

[0003] In view of the above problems, the present application proposes a pipe truss skeleton membrane structure applicable to soft soil foundations. This structure has strong resistance to seat displacement, short construction period, good daylighting performance, strong corrosion resistance, can effectively reduce the cost of building structures, and obtain better economic and social benefits.

[0004] To achieve the above objectives, the following technical solutions are adopted: A pipe truss skeleton membrane structure applicable to soft soil foundations includes two pipe truss end modules, several pipe truss standard modules, and a PE membrane structure module; the pipe truss end modules are located at both ends of the structure, and several pipe truss standard modules are provided in the middle of the two pipe truss end modules. There is no connection between the pipe truss end modules and the pipe truss standard modules, and there is also no connection between several pipe truss standard modules. The bottoms of the pipe truss end modules and the pipe truss standard modules are pin-connected to concrete short columns. The PE membrane structure module is covered on the outside of the pipe truss end modules and the pipe truss standard modules, and is used for connecting between the pipe truss end modules and several pipe truss standard modules to form a main space structure.

[0005] Both the pipe truss end modules and the pipe truss standard modules include a three-hinged arch space pipe truss structure and buckling-restrained braces. The three-hinged arch space pipe truss structure and the buckling-restrained braces are pin-connected.

[0006] The pipe truss end module further includes a gable steel structure. The three-hinged arch space pipe truss structure and the gable steel structure are connected by high-strength bolts, and the gable steel structure is hinged to the concrete short column.

[0007] The PE membrane structure module is composed of a PE membrane, an aluminum alloy track, and a waterproof membrane; the PE membrane is fixed in the aluminum alloy track, and the aluminum alloy track is connected to the three-hinged arch space pipe truss structure; a waterproof membrane is fixedly connected at the interface of every two PE membranes.

[0008] The three-hinged arch space pipe truss structure is composed of several three-hinged arch trusses, longitudinal trusses, and horizontal web members; the three-hinged arch trusses are connected by several longitudinal trusses; the horizontal web members are connected between the three-hinged arch trusses and the longitudinal trusses; high-strength bolts are used to connect the three-hinged arch trusses, longitudinal trusses, and horizontal web members.

[0009] The three-hinged arch truss is composed of 2 arched trusses, which are connected by a pin shaft between the 2 arched trusses, and the two ends are connected to the concrete short columns by pin shafts; the arched truss is composed of an upper chord of the arched truss, a lower chord of the arched truss, and web members of the arched truss; the upper chord of the arched truss, the lower chord of the arched truss, and the web members of the arched truss are connected by welding.

[0010] The longitudinal truss is composed of an upper chord of the longitudinal truss, a lower chord of the longitudinal truss, web members of the longitudinal truss, and knee braces; the upper chord of the longitudinal truss, the lower chord of the longitudinal truss, and the web members of the longitudinal truss are connected by welding; the knee braces are connected to the upper chord of the longitudinal truss by high-strength bolts.

[0011] The buckling-restrained brace is composed of a core unit and a restraint unit; there is no connection between the core unit and the restraint unit, and a lateral gap is reserved.

[0012] The advantages of the present invention are as follows: For the pipe truss skeleton membrane structure of the present application, the longitudinal arrangement is "crawler type", and the transverse structure adopts a statically determinate structure system, forming a "rigid-flexible combination" skeleton membrane structure form, which greatly reduces the degree of redundancy of the structure. In the case of a certain horizontal displacement or vertical settlement at the support, the steel structure is ensured to be safe. In addition, this skeleton membrane structure system has the advantages of good corrosion resistance, long service life, short construction period, and can effectively reduce the investment cost of building structures, and can obtain better economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an elevation view of a pipe truss skeleton membrane structure applicable to soft soil foundation provided by the present invention; Figure 2 It is a plan layout view of a pipe truss skeleton membrane structure applicable to soft soil foundation provided by the present invention; Figure 3 It is a schematic structural view of the pipe truss end module in a pipe truss skeleton membrane structure applicable to soft soil foundation provided by the present invention; Figure 4 It is a schematic structural view of the pipe truss standard module in a pipe truss skeleton membrane structure applicable to soft soil foundation provided by the present invention; Figure 5 It is a schematic view of the three-hinged arch space pipe truss structure in a pipe truss skeleton membrane structure applicable to soft soil foundation provided by the present invention; Figure 6 Schematic diagram of a three-hinged arch truss structure in a pipe truss skeleton membrane structure applicable to soft soil foundation provided by the present invention; Figure 7 Schematic diagram of a longitudinal truss structure in a pipe truss skeleton membrane structure applicable to soft soil foundation provided by the present invention; Figure 8 Schematic diagram of a buckling-restrained brace in a pipe truss skeleton membrane structure applicable to soft soil foundation provided by the present invention; Figure 9 Schematic diagram of a PE membrane structure module in a pipe truss skeleton membrane structure applicable to soft soil foundation provided by the present invention; In the figure, 1 is the pipe truss end module; 2 is the pipe truss standard module; 3 is the PE membrane structure module; 31 is the PE membrane; 32 is the aluminum alloy track; 33 is the waterproof membrane; 4 is the concrete short column; 5 is the three-hinged arch space pipe truss structure; 51 is the three-hinged arch truss; 511 is the arched truss; 5111 is the upper chord of the arched truss; 5112 is the lower chord of the arched truss; 5113 is the web member of the arched truss; 52 is the longitudinal truss; 521 is the upper chord of the longitudinal truss; 522 is the lower chord of the longitudinal truss; 523 is the web member of the longitudinal truss; 524 is the knee brace; 53 is the horizontal web member; 6 is the buckling-restrained brace; 61 is the core unit; 62 is the restraint unit; 7 is the gable steel structure. Detailed implementation manners

[0014] In order to make the purpose, technical solutions and advantages of this skeleton membrane structure clearer, the following further elaborates on this skeleton membrane structure in conjunction with the drawings and embodiments.

[0015] As Figures 1-9 shown, a pipe truss skeleton membrane structure applicable to soft soil foundation includes 2 pipe truss end modules 1, several pipe truss standard modules 2 and PE membrane structure modules 3; the pipe truss end modules 1 are located at both ends of the structure, and several pipe truss standard modules 2 are arranged between the 2 pipe truss end modules 1. There is no connection between the pipe truss end module 1 and the pipe truss standard module 2 and between several pipe truss standard modules 2. The bottoms of the pipe truss end module 1 and the pipe truss standard module 2 are pin-connected to the concrete short column 4. The PE membrane structure module 3 is installed outside the pipe truss end module 1 and the pipe truss standard module 2 for connecting the pipe truss end module 1 and several pipe truss standard modules 2 to form a main space structure.

[0016] In this embodiment, the pipe truss end module 1, the pipe truss standard module 2 and the PE membrane structure module 3 all adopt standard modular structures, and each module is prefabricated in a factory; there are no steel members between the pipe truss end module 1 and the pipe truss standard module 2 and between several pipe truss standard modules 2, and they are only connected by the PE membrane structure module 3.

[0017] In this embodiment, it is mainly aimed at buildings in soft soil foundation areas. Due to the low bearing capacity of soft soil foundations and the easy occurrence of settlement deformation, there is no connection between the pipe truss end modules 1 and several pipe truss standard modules 2. Two pipe truss end modules 1, several pipe truss standard modules 2, and the external PE membrane structure module 3 form the main space structure. This space system is longitudinally arranged in a "crawler type" and transversely adopts a three-hinged arch statically determinate structure system, forming a "rigid-flexible combination" framework membrane structure form, which greatly reduces the degree of redundancy of the structure. In the case of a certain horizontal displacement or vertical settlement at the supports, it ensures the safety of the structure, and the individual forces of the pipe truss end module 1 or several pipe truss standard modules 2 do not affect each other. When a certain module has a support outward displacement, it will not affect the forces of other modules, ensuring the safety of the steel structure. At the same time, the structure of this application also has advantages such as good corrosion resistance, long service life, short construction period, and can effectively reduce the investment cost of building structures, and can obtain better economic and social benefits.

[0018] Both the pipe truss end module 1 and the pipe truss standard module 2 include a three-hinged arch space pipe truss structure 5 and a buckling-restrained brace 6, and the three-hinged arch space pipe truss structure 5 and the buckling-restrained brace 6 are connected by a pin shaft.

[0019] In this embodiment, the three-hinged arch space pipe truss structure 5 is hinged to the buckling-restrained brace 6. When the structure has a support displacement, by utilizing the energy dissipation effect of the buckling-restrained brace 6, the influence of the support displacement on the structure is reduced.

[0020] The pipe truss end module 1 further includes a gable steel structure 7. The three-hinged arch space pipe truss structure 5 and the gable steel structure 7 are connected by high-strength bolts, and the gable steel structure 7 is hinged to the concrete short column 4.

[0021] In this embodiment, the gable steel structure 7 resists the longitudinal horizontal load of the gable and transfers the longitudinal horizontal load to the concrete short column 4 and the main space structure.

[0022] The PE membrane structure module 3 is composed of a PE membrane 31, an aluminum alloy track 32, and a waterproof membrane 33; the PE membrane 31 is fixed in the aluminum alloy track 32, and the aluminum alloy track 32 is connected to the three-hinged arch space pipe truss structure 5; a waterproof membrane 33 is fixedly connected at the interface of every two PE membranes 31, specifically, the waterproof membrane 33 is located above the interface of each PE membrane 31 and is welded to the PE membrane 31.

[0023] The PE membrane structure module 3 serves as an enclosure structure. Its function is to form the building space and shape, and distribute the loads acting on it to the pipe truss end module 1 and several pipe truss standard modules 2 through the aluminum alloy track. Finally, the PE membrane structure module 3 and the main space structure system form a complete framework membrane structure.

[0024] The three-hinged arch space pipe truss structure 5 is composed of a number of three-hinged arch trusses 51, longitudinal trusses 52, and horizontal web members 53; the three-hinged arch trusses 51 are connected by a number of longitudinal trusses 52; the horizontal web members 53 are connected between the three-hinged arch trusses 51 and the longitudinal trusses 52; high-strength bolts are used for connection between the three-hinged arch trusses 51, longitudinal trusses 52, and horizontal web members 53.

[0025] The three-hinged arch truss 51 is composed of 2 arched trusses 511; the 2 arched trusses 511 are connected by a pin; both ends are connected to the concrete short columns 4 by pins; the arched truss 511 is composed of an arched truss upper chord 5111, an arched truss lower chord 5112, and an arched truss web member 5113; welding is used for connection between the arched truss upper chord 5111, arched truss lower chord 5112, and arched truss web member 5113.

[0026] In this embodiment, the 2 arched trusses 511 are hinged to each other and both ends are hinged to the concrete short columns 4, forming a three-hinged arch system, which is a statically determinate structure. In the case of horizontal displacement or vertical settlement of the supports, no additional internal forces will be generated in the structure, ensuring the safety of the steel structure.

[0027] The longitudinal truss 52 is composed of a longitudinal truss upper chord 521, a longitudinal truss lower chord 522, a longitudinal truss web member 523, and knee braces 524; welding is used for connection between the longitudinal truss upper chord 521, longitudinal truss lower chord 522, and longitudinal truss web member 523; high-strength bolts are used for connection between the knee braces 524 and the longitudinal truss upper chord 521.

[0028] The buckling-restrained brace 6 is composed of a core unit 61 and a restraint unit 62; the core unit 61 and the restraint unit 62 are not connected and a lateral gap is reserved. During the normal service stage, the core unit 61 bears conventional loads such as the structural gravity load and wind load, and the deformation is within the elastic range. When the structure undergoes support displacement and its force exceeds the yield strength of the core unit 61, the core unit 61 enters plastic deformation, generates hysteretic energy dissipation through axial tension-compression cyclic yielding, and the restraint unit 62 prevents the core unit from buckling through lateral restraint, ensuring that its bearing capacity does not decrease when compressed.

[0029] The above has made a detailed description of the implementation mode of this skeletal membrane structure in conjunction with the drawings. However, this skeletal membrane structure is not limited to the above implementation mode. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of this skeletal membrane structure system.

Claims

1. A pipe truss skeleton membrane structure applicable to soft soil foundation, characterized in that, It includes two pipe truss end modules, several pipe truss standard modules and a PE membrane structure module; the pipe truss end modules are located at both ends of the structure, several pipe truss standard modules are arranged between the two pipe truss end modules, there is no connection between the pipe truss end modules and the pipe truss standard modules and between several pipe truss standard modules, the bottoms of the pipe truss end modules and the pipe truss standard modules are pin-connected to the concrete short columns, and the PE membrane structure module is covered outside the pipe truss end modules and the pipe truss standard modules for connecting between the pipe truss end modules and several pipe truss standard modules to form a main space structure.

2. The pipe truss skeleton membrane structure applicable to soft soil foundation according to claim 1, characterized in that, Both the pipe truss end module and the pipe truss standard module include a three-hinged arch space pipe truss structure and a buckling-restrained brace, and the three-hinged arch space pipe truss structure is pin-connected to the buckling-restrained brace.

3. The pipe truss skeleton membrane structure applicable to soft soil foundation according to claim 1, characterized in that, Both the pipe truss end module and the pipe truss standard module include a three-hinged arch space pipe truss structure and a buckling-restrained brace, and the three-hinged arch space pipe truss structure is pin-connected to the buckling-restrained brace.

4. The pipe truss framework membrane structure applicable to soft soil foundation according to claim 1, wherein The PE membrane structure module is composed of a PE membrane, an aluminum alloy track and a waterproof membrane; the PE membrane is fixed in the aluminum alloy track, and the aluminum alloy track is connected to the three-hinged arch space pipe truss structure; a waterproof membrane is fixedly connected at the interface between every two PE membranes.

5. The pipe truss framework membrane structure applicable to soft soil foundation according to claim 2, characterized in that The three-hinged arch space pipe truss structure is composed of several three-hinged arch trusses, longitudinal trusses and horizontal web members; several longitudinal trusses are used to connect between the three-hinged arch trusses; the horizontal web members are connected between the three-hinged arch trusses and the longitudinal trusses; high-strength bolts are used for connection between the three-hinged arch trusses, the longitudinal trusses and the horizontal web members.

6. The pipe truss skeleton membrane structure applicable to soft soil foundation according to claim 5, characterized in that, The three-hinged arch truss is composed of two arched trusses, the two arched trusses are pin-connected, and both ends are pin-connected to the concrete short columns; the arched truss is composed of an arched truss upper chord, an arched truss lower chord and an arched truss web member; welding is used for connection between the arched truss upper chord, the arched truss lower chord and the arched truss web member.

7. A pipe truss skeleton membrane structure applicable to soft soil foundation according to claim 5, characterized in that, The longitudinal truss is composed of a longitudinal truss upper chord, a longitudinal truss lower chord, a longitudinal truss web member and a knee brace; welding is used for connection between the longitudinal truss upper chord, the longitudinal truss lower chord and the longitudinal truss web member; high-strength bolts are used for connection between the knee brace and the longitudinal truss upper chord.

8. The pipe truss skeleton membrane structure applicable to soft soil foundation according to claim 2, wherein The buckling-restrained brace is composed of a core unit and a restraint unit; there is no connection between the core unit and the restraint unit, and a transverse gap is reserved.

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