Fabricated truss anti-seismic structure

Abstract

The utility model discloses an assembly type truss anti-seismic structure in the field of steel structure buildings, which comprises a bottom layer frame, the bottom layer frame comprises buckling-restrained bracing members vertically arranged at four corners, the lower ends of the buckling-restrained bracing members are connected with ground beams, cross beams are connected between the upper ends of the buckling-restrained bracing members, and swing bracing structures are arranged in two end faces of the bottom layer frame. The swing supporting structure comprises a hinge seat arranged in the middle of the ground beam and a pair of symmetrically-arranged first diagonal draw bars, the upper ends of the first diagonal draw bars are connected with the end of the cross beam, the lower ends of the first diagonal draw bars are connected with the hinge seat through connecting seats, and second diagonal draw bars are diagonally connected to the two side faces of the bottom layer frame. According to the assembly type truss anti-seismic structure, the characteristics of the swing structure and the buckling-restrained brace are comprehensively utilized, the anti-seismic performance of the assembly type truss is improved, and the safety of a steel structure building is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of steel structure buildings, in particular to an assembled truss earthquake-resistant structure. Background Art

[0002] At present, steel structure buildings have been widely used in various industries. Due to its rapidity, convenient installation and construction, strong structure, environmental protection and energy saving, it has a great trend of replacing traditional buildings in some fields. In recent years, earthquake disasters have occurred frequently in the world, which has brought great disasters to society and people, so the earthquake-resistant design of steel structure buildings is particularly important.

[0003] The swaying structure system is one of the current research hotspots in the field of structural seismic resistance. The concept of structural sway comes from the analysis of actual earthquake damage. Researchers have found that appropriate foundation lifting or structural swaying can help reduce the seismic effects of the upper structure. However, under strong earthquakes, swaying structures will also have problems with excessive residual deformation and even have the potential risk of structural overturning.

[0004] Buckling-resistance braces (BRBs) are a new type of shock-absorbing and energy-absorbing element. They provide lateral stiffness for the frame while solving the problem that ordinary supports are susceptible to compressive buckling under large earthquakes. At the same time, BRBs rely on the tensile and compressive elastic-plastic deformation energy dissipation of the core segment to provide an additional damping ratio for the frame, which can improve the energy dissipation capacity of the frame under earthquakes and exhibit good seismic performance. Utility Model Content

[0005] The utility model aims to provide an assembled truss anti-seismic structure, which comprehensively utilizes the characteristics of the swing structure and the anti-buckling support to improve the anti-seismic performance of the assembled truss.

[0006] The purpose of the utility model is achieved as follows: an assembled truss earthquake-resistant structure, including a bottom frame, the bottom frame includes anti-buckling support members vertically arranged at four corners, the lower end of the anti-buckling support member is connected to the ground beam, and a cross beam is connected between the upper ends, and a swing support structure is arranged in the two end surfaces of the bottom frame, the swing support structure includes a hinge seat arranged in the middle of the ground beam and a pair of first inclined tie rods arranged symmetrically, the upper end of the first inclined tie rod is connected to the end of the cross beam, and the lower end is connected to the hinge seat through a connecting seat, and second inclined tie rods are diagonally connected in the two side surfaces of the bottom frame. The assembled truss earthquake-resistant structure of the utility model comprehensively utilizes the characteristics of the swing structure and the anti-buckling support to improve the earthquake-resistant performance of the assembled truss and ensure the safety of the steel structure building.

[0007] As a further improvement of the utility model, each first inclined tie rod includes a pair of L-shaped steels with their backs facing each other, thereby increasing the service life of the rocking structure.

[0008] As a further improvement of the utility model, a first connecting plate is welded and fixed to the lower end of the anti-buckling support member, and a second connecting plate is provided at the bottom of the hinged seat. The first connecting plate, the second connecting plate and the ground beam are connected by anchor bolts. The length of the anchor bolts is not less than 400 mm to ensure the reliability of the connection with the ground beam.

[0009] As a further improvement of the utility model, the connecting seat includes an L-shaped end plate and a main ear plate vertically connected to the bottom of the L-shaped end plate, a pair of auxiliary ear plates are welded and fixed on the second connecting plate, the main ear plate is inserted between the auxiliary ear plates and connected by a pin shaft to ensure reliable connection during the swinging process.

[0010] As a further improvement of the present invention, the thickness of the L-shaped end plate is 10 mm, the thickness of the main ear plate is 20 mm, and the thickness of the auxiliary ear plate is 15 mm, so as to further improve the connection reliability.

[0011] As a further improvement of the utility model, the upper end of the second inclined tie rod is connected to the cross beam, and the lower end is connected to the first connecting plate, so that the first connecting plate is fully utilized and the design is simplified.

[0012] As a further improvement of the present invention, the second diagonal tie rod adopts a steel bar with a diameter of 20 mm to ensure the earthquake resistance of the truss.

[0013] As a further improvement of the utility model, the second diagonal tie rod is connected by a basket bolt to facilitate telescopic adjustment and ensure the seismic resistance of the truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the end structure of the assembled truss seismic resistant structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the lateral structure of the assembled truss earthquake-resistant structure of the utility model.

[0016] Figure 3 It is a partial view of the swing support structure and the ground beam of the assembled truss earthquake-resistant structure of the utility model.

[0017] Figure 4 of Figure 3 Side view of.

[0018] Figure 5 for Figure 3 Medium KK view.

[0019] Figure 6 It is a top view of the hinged seat of the assembled truss earthquake-resistant structure of the utility model.

[0020] Figure 7 It is a schematic diagram of the end structure of the buckling-resistant support member of the assembled truss seismic structure of the utility model.

[0021] Figure 8 It is a schematic diagram of the lateral structure of the anti-buckling support member of the assembled truss seismic structure of the utility model.

[0022] Fig. 9 for Figure 8 Medium PP view.

[0023] Among them, 1 anti-buckling support member, 1A core plate, 1B lateral restraint plate, 1C cover plate, 1D variable-section stiffening rib, 2 ground beam, 3 cross beam, 4 hinged seat, 4A second connecting plate, 4B auxiliary ear plate, 5 first diagonal rod, 6 second diagonal rod, 7 first connecting plate, 8 connecting seat, 8A L-shaped end plate, 8B main ear plate, 9 anchor bolts, 10 pin shaft, 11 basket bolt. DETAILED DESCRIPTION

[0024] like Figure 1-6 The assembled truss seismic structure shown includes a bottom frame, which includes anti-buckling support members 1 vertically arranged at four corners, the lower end of the anti-buckling support member 1 is connected to the ground beam 2, and the upper end is connected with a cross beam 3. A first connecting plate 7 is welded and fixed to the lower end of the anti-buckling support member 1, and a second connecting plate 4A is provided at the bottom of the hinge seat 4. The first connecting plate 7, the second connecting plate 4A and the ground beam 2 are connected by anchor bolts 9, and the length of the anchor bolts 9 is not less than 400 mm to ensure the reliability of the connection with the ground beam 2.

[0025] A swing support structure is provided in both end surfaces of the bottom frame. The swing support structure includes an articulated seat 4 provided in the middle of the ground beam 2 and a pair of first inclined rods 5 provided symmetrically. The upper end of the first inclined rod 5 is connected to the end of the cross beam 3, and the lower end is connected to the articulated seat 4 through a connecting seat 8. Each first inclined rod 5 includes a pair of L-shaped steels with opposite limbs, which improves the service life of the swing structure. The connecting seat 8 includes an L-shaped end plate 8A and a main ear plate 8B vertically connected to the bottom of the L-shaped end plate 8A. A pair of secondary ear plates 4B are welded and fixed on the second connecting plate 4A. The main ear plate 8B is inserted between the secondary ear plates 4B and connected by a pin 10 to ensure reliable connection during the swinging process. In this embodiment, the thickness of the L-shaped end plate 8A is 8 mm, the thickness of the main ear plate 8B is 20 mm, and the thickness of the secondary ear plate 4B is 15 mm.

[0026] The second diagonal tie rod 6 is connected diagonally on both sides of the bottom frame. The upper end of the second diagonal tie rod 6 is connected to the cross beam 3, and the lower end is connected to the first connecting plate 7, making full use of the first connecting plate 7 and simplifying the design. The second diagonal tie rod 6 uses a steel bar with a diameter of 20 mm, and the middle part is connected by a basket bolt, which is convenient for telescopic adjustment to ensure the seismic performance of the truss.

[0027] like Figure 7-9As shown, the anti-buckling support member 1 includes a core plate 1A, a lateral restraint plate 1B and a cover plate 1C. The main body of the core plate 1A is in the shape of a straight line and has a lateral protrusion in the middle, and has a variable-section expansion portion and a variable-section stiffening rib 1D at both ends. The variable-section expansion portion and the main body of the core plate 1A are formed in one piece, and the variable-section stiffening rib 1D is vertically fixed to the variable-section expansion portion to form a cross-shaped section. The lateral restraint plates 1B are symmetrically arranged on both sides of the core plate 1A and have grooves in the middle that match the lateral protrusions. The cover plates 1C are arranged at both ends of the core plate 1A, and the cover plates 1C are connected to the lateral restraint plates 1B by bolts. The various components of the anti-buckling support member 1 adopt a detachable connection structure, which is easy to disassemble and simple to maintain.

[0028] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. An assembled truss seismic resistant structure, characterized in that: The invention comprises a bottom frame, wherein the bottom frame comprises anti-buckling support members vertically arranged at four corners, wherein the lower ends of the anti-buckling support members are connected to the ground beams, and the upper ends are connected to the cross beams, and swing support structures are arranged in both end surfaces of the bottom frame, and the swing support structures comprise an articulated seat arranged in the middle of the ground beams and a pair of first diagonal tie rods symmetrically arranged, wherein the upper ends of the first diagonal tie rods are connected to the end portions of the cross beams, and the lower ends are connected to the articulated seats through the connecting seats, and second diagonal tie rods are diagonally connected in the two side surfaces of the bottom frame.

2. The assembled truss seismic resistant structure according to claim 1, characterized in that: Each of the first inclined tie rods comprises a pair of L-shaped steels with their backs facing each other.

3. The assembled truss seismic resistant structure according to claim 1, characterized in that: A first connecting plate is welded and fixed to the lower end of the anti-buckling support member, and a second connecting plate is provided at the bottom of the hinged seat. The first connecting plate, the second connecting plate and the ground beam are connected by anchor bolts, and the length of the anchor bolts is not less than 400 mm.

4. The assembled truss seismic resistant structure according to claim 3 is characterized in that: The connecting seat includes an L-shaped end plate and a main ear plate vertically connected to the bottom of the L-shaped end plate, a pair of auxiliary ear plates are welded and fixed on the second connecting plate, and the main ear plate is inserted between the auxiliary ear plates and connected by a pin shaft.

5. The assembled truss seismic resistant structure according to claim 4 is characterized in that: The thickness of the L-shaped end plate is 10 mm, the thickness of the main ear plate is 20 mm, and the thickness of the auxiliary ear plate is 15 mm.

6. The assembled truss seismic resistant structure according to claim 4, characterized in that: The upper end of the second inclined tie rod is connected to the cross beam, and the lower end is connected to the first connecting plate.

7. The assembled truss seismic resistant structure according to any one of claims 2 to 6, characterized in that: The second diagonal tie rod is made of steel bars with a diameter of 20 mm.

8. The assembled truss seismic resistant structure according to any one of claims 2 to 6, characterized in that: The second diagonal tie rod is connected by a turnbuckle bolt.

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