CN212336309U

CN212336309U - Dual anti side force braced frame of window shape net

Info

Publication number: CN212336309U
Application number: CN202021522938.7U
Authority: CN
Inventors: 郝际平; 樊春雷; 孙晓岭; 张凯晨
Original assignee: Xian University of Architecture and Technology
Current assignee: Xian University of Architecture and Technology
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-01-12
Anticipated expiration: 2030-07-28

Abstract

A window-shaped grid double lateral force resisting support frame comprises upright posts, cross beams and a window-shaped grid support component; the two upright posts are arranged in parallel, and the plurality of cross beams are vertically arranged between the two upright posts at equal intervals to separate the two upright posts into a plurality of rectangular frames; and a window-shaped grid supporting component is fixedly arranged in each rectangular frame. The utility model discloses the net support system forms the lattice roof beam through optimizing the net form, reduces the frame height indirectly, and the effectual calculation length that reduces the support member, the slenderness ratio of support member is little, and anti bucking ability is good, and difficult emergence support member bucking is destroyed, and buckling destruction is supported in the easy control.

Description

Dual anti side force braced frame of window shape net

Technical Field

The utility model belongs to the technical field of anti side force braced frame, in particular to dual anti side force braced frame of window shape net.

Background

The steel structure building can greatly reduce the construction period because the components can be manufactured in a factory and installed on site, and steel in the steel structure building can be recycled, so that the construction waste can be greatly reduced, and the steel structure building is more environment-friendly, so that the steel structure building is widely applied to industrial buildings and civil buildings. Therefore, new technology for supporting the design and construction of multi-story and high-rise buildings is urgently needed.

For steel structure, the influence of side load effect (including earthquake action and wind load) is in a prominent position as the height of high-rise and super high-rise houses increases, so that the side force resistance and the seismic capacity of the structure are generally improved by a side force resistant component, and a steel frame-support system is a common system in the multi-rise steel structure.

In order to improve the lateral stiffness and lateral bearing capacity of a building in the existing steel structure building, members such as large supports are generally adopted, the ductility of the structure is poor, and particularly under the action of a reciprocating horizontal earthquake, when the stress of the structure enters an elastic-plastic range, the shearing resistance of a floor and the lateral stiffness of the structure are rapidly reduced, the lateral movement between layers is excessively increased, and finally the integral instability and damage of the structure are caused. The existing lateral force resisting component influences the building appearance, influences the installation of a wall body and cannot organically unify the building with the enclosure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dual anti side force braced frame of window shape net to solve above-mentioned problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a window-shaped grid double lateral force resisting support frame comprises upright posts, cross beams and a window-shaped grid support component; the two upright posts are arranged in parallel, and the plurality of cross beams are vertically arranged between the two upright posts at equal intervals to separate the two upright posts into a plurality of rectangular frames; and a window-shaped grid supporting component is fixedly arranged in each rectangular frame.

The window-shaped grid supporting component comprises supporting upright posts, supporting cross beams, herringbone supports and short inclined supports; two symmetrical supporting upright columns are vertically arranged between an upper cross beam and a lower cross beam of the rectangular frame, and two symmetrical supporting cross beams are vertically arranged on the two supporting upright columns to form an inner rectangular frame; four corners of the inner rectangular frame extend outwards and are welded with short inclined supports, and the short inclined supports are arranged along the diagonal of the rectangular frame; the outer sides of the two supporting cross beams are welded with herringbone supports to form a grid supporting component.

Further, the herringbone support comprises two short inclined supports, and the two short inclined supports are welded to form the herringbone.

Furthermore, end plates are arranged at the top of the herringbone support, the end of the short inclined support and the two ends of the support upright post, and the support upright post is connected with the cross beam through the end plates and the cross beam bolts; and force transmission plates are arranged on the end plates of the herringbone support and the short inclined support.

Furthermore, node plates are arranged at the four inner corners of the rectangular frame and the middle point of the cross beam; the gusset plate and the force transmission plate are both provided with matched bolt holes and fixedly connected through bolts.

Further, the upright column is a rectangular steel pipe column, a circular steel pipe column, a rectangular steel pipe concrete column or a circular steel pipe concrete column; the cross beam is an I-shaped steel beam.

Furthermore, the supporting upright posts, the supporting cross beams and the short inclined supports are all square steel tubes, round steel tubes, I-shaped steel supports, T-shaped steel supports, L-shaped steel supports, channel-shaped steel supports, cross-shaped steel supports or L-shaped steel supports.

Compared with the prior art, the utility model discloses there is following technological effect:

the utility model discloses the net support system forms the lattice roof beam through optimizing the net form, reduces the frame height indirectly, and the effectual calculation length that reduces the support member, the slenderness ratio of support member is little, and anti bucking ability is good, and difficult emergence support member bucking is destroyed, and buckling destruction is supported in the easy control.

The grid supporting structure has slow rigidity degradation and is more beneficial to earthquake resistance and energy consumption, and because the supporting force is dispersed into a plurality of rod pieces, when one rod piece is damaged, the internal force is redistributed, other rod pieces can still provide rigidity, the rigidity degradation of the whole structure is slow, and the ductility performance is better. While still having greater stiffness and load bearing capacity.

The cross section of the grid supporting structure is small in size, so that the grid supporting structure is easier to hide in a maintenance wallboard, and the integration of the enclosure structure is realized.

The grid support can be prefabricated in a factory and connected with the frame through bolts, so that the assembly speed and the assembling speed of the structure are improved, the requirements and the characteristics of an assembly type steel structure are fully met, and the development requirements of an assembly type building are met.

The structure is simple, the installation, the replacement and the transportation are convenient, the grid support can be assembled in a separable way, the integral hoisting can be realized, and the assembly is easy to realize.

Drawings

FIG. 1 is a detailed view of the frame of the present invention;

FIG. 2 is an exploded detail view of the grid support of the present invention;

FIG. 3 is a detailed view of the grid support of the present invention;

FIG. 4 is a detailed view of the node connection of the present invention;

FIG. 5 is a schematic view of the overall structure of the present invention;

fig. 6(a) - (c) are schematic diagrams of the yield failure process of the present invention;

FIG. 7 is a load displacement diagram of the present invention;

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

referring to fig. 1 to 7, a window-shaped grid dual lateral force resisting support frame includes a vertical column 1, a cross beam 2 and a window-shaped grid support assembly; the two upright posts 1 are arranged in parallel, and the plurality of cross beams 2 are vertically arranged between the two upright posts 1 at equal intervals to divide the two upright posts 1 into a plurality of rectangular frames; and a window-shaped grid supporting component is fixedly arranged in each rectangular frame.

The window-shaped grid supporting assembly comprises supporting upright posts 11, supporting cross beams 13, herringbone supports 12 and short inclined supports 10; two symmetrical supporting upright posts 11 are vertically arranged between the upper and lower cross beams 2 of the rectangular frame, and two symmetrical supporting cross beams 13 are vertically arranged on the two supporting upright posts 11 to form an inner rectangular frame; four corners of the inner rectangular frame are respectively provided with a short inclined support 10 in an outward extending welding mode, and the short inclined supports 10 are arranged along the diagonal line of the rectangular frame; herringbone supports 12 are welded on the outer sides of the two supporting cross beams 13 to form a grid supporting assembly. The grid support system forms the lattice beam by optimizing the grid form, indirectly reduces the height of the frame, effectively reduces the calculated length of the support rod piece, has small slenderness ratio of the support rod piece and good buckling resistance, is not easy to cause buckling damage of the support rod piece, and is easy to control buckling damage of the support.

The herringbone support 12 comprises two short inclined supports 10, and the two short inclined supports 10 are welded to form a herringbone shape.

End plates 6 are arranged at the top points of the herringbone supports 12, the end parts of the short inclined supports 10 and the two ends of the support upright posts 11, and the support upright posts 11 are connected with the cross beam 2 through the end plates 6 by bolts; the end plates 6 of the herringbone strut 12 and the short inclined strut 10 are both provided with a force transmission plate 5.

Gusset plates 3 are arranged at the four inner corners of the rectangular frame and the middle point of the cross beam 2; all be provided with the assorted bolt hole on gusset plate 3 and the dowel plate 5, gusset plate 3 and dowel plate 5 pass through bolt fixed connection.

The upright column 1 is a rectangular steel pipe column, a circular steel pipe column, a rectangular steel pipe concrete column or a circular steel pipe concrete column; the cross beam 2 is an I-shaped steel beam.

The supporting upright posts 11, the supporting cross beams 13 and the short inclined supports 10 are all square steel tubes, round steel tubes, I-shaped steel supports, T-shaped steel supports, L-shaped steel supports, channel-shaped steel supports, cross-shaped steel supports or L-shaped steel supports.

As shown in fig. 1, the frame of the present invention is composed of two columns 1 and two beams 2, wherein the two columns are vertically arranged, and the two ends of the beam are welded on the columns. The frame is equipped with the bolt hole with the support post hookup location on the roof beam, passes through the gusset plate and passes through the position welding gusset plate that gusset plate and dowel plate are connected at frame and support net.

Referring to fig. 2 and fig. 3, the grid support of the present invention and the grid support of the present invention are illustrated in detail, and the grid support includes a short diagonal brace 10, a support column 11, a herringbone brace 12, and a support beam 13. The formed grid support is prefabricated in the factory.

Referring to fig. 4 for the detailed view of the node connection of the present invention, the supporting columns 11 are connected by end plates and flange bolts, the herringbone supports are connected by force transmission plates and frame node plates, and the short inclined struts 10 are connected by force transmission plates 5 and frame node plates 3.

Referring to fig. 5, the overall structure of the present invention is schematically illustrated in that the grid support is connected to the frame by bolts through the connection means shown in fig. 3 and 4.

The utility model relates to a dual anti side force braced frame unit of window shape net improves the anti side force stability and the structure ductility of building when effectively reducing member length and size. The grid support unit is connected with the structure through the bolts, so that the assembly speed and the assembling speed of the structure are improved.

The utility model discloses a mechanical properties that pane formula net supported multiple anti side force braced frame unit is explained through carrying out finite element simulation below.

Finite element simulation was performed on the support frame using ABAQUS software, the frame beam was 400 × 200 × 8 × 12, the frame column was 350 × 350 × 14, the support post was 120 × 120 × 6, and the finite element analysis results of the support bar members except for the support post were 60 × 60 × 6 as shown in fig. 6 and 7.

Due to the adoption of grid support, the ductility and the seismic performance of the structure are good. The grid support failure sequence is as shown in fig. 6(a) - (c), the diagonal brace in the grid support firstly yields when being pressed along with the increase of the vertex displacement, the pressed diagonal brace rod piece is broken and then is subjected to internal force redistribution, other rod pieces can still provide rigidity after being continuously carried, the rigidity degradation of the whole structure is ensured to be slow, the peripheral grid is broken when the load is increased, finally the frame is broken, and the final failure of the whole structure is as shown in fig. 6 (c).

The utility model discloses according to antidetonation concept design principle, provide a dual anti side force braced frame unit of window shape net, at earthquake effect under bracing at first through the elastoplasticity deformation power consumption, the net supports simultaneously owing to discretizing the holding power into a plurality of members, destroys the back when certain member, internal force redistribution, and other members still can provide rigidity, and whole structural rigidity degradation is slower, and ductility performance is better. In addition, the size of the support rod piece is greatly reduced while the rigidity, the bearing capacity and the ductility are high, and the support rod piece is beneficial to being hidden in a wall body. The load displacement diagram is shown in fig. 7, the grid support has good energy consumption capability, and the ductility and the lateral force resistance of the structure are improved.

The above description of the present invention is provided for the purpose of illustration and description, and it is not to be construed as an admission that the present invention is not limited thereto, but rather as a definition of the limits of the invention, it is understood that the invention is capable of numerous modifications and variations, all without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A window-shaped grid double-lateral-force-resisting supporting frame is characterized by comprising upright posts (1), cross beams (2) and a window-shaped grid supporting component; the two upright posts (1) are arranged in parallel, and the plurality of cross beams (2) are vertically arranged between the two upright posts (1) at equal intervals to divide the two upright posts (1) into a plurality of rectangular frames; a window-shaped grid supporting component is fixedly arranged in each rectangular frame;

the window-shaped grid support assembly comprises support upright posts (11), support cross beams (13), herringbone supports (12) and short inclined supports (10); two symmetrical supporting upright posts (11) are vertically arranged between the upper and lower cross beams (2) of the rectangular frame, and two symmetrical supporting cross beams (13) are vertically arranged on the two supporting upright posts (11) to form an inner rectangular frame; four corners of the inner rectangular frame are respectively provided with a short inclined support (10) in an outward extending and welding mode, and the short inclined supports (10) are arranged along the diagonal line of the rectangular frame; herringbone supports (12) are welded on the outer sides of the two supporting cross beams (13) to form a grid supporting assembly.

2. A window grid dual lateral force resisting support frame according to claim 1, characterized in that the herringbone support (12) comprises two short diagonal supports (10), and the two short diagonal supports (10) are welded to form a herringbone.

3. The window-shaped grid double lateral force resisting support frame is characterized in that end plates (6) are arranged at the top points of the herringbone supports (12) and the end portions of the short inclined supports (10) and the two ends of the support upright columns (11), and the support upright columns (11) are connected with the cross beams (2) through the bolt of the end plates (6); force transmission plates (5) are arranged on the end plates (6) of the herringbone support (12) and the short inclined support (10).

4. The window-shaped grid double lateral force resisting support frame is characterized in that node plates (3) are arranged at the four inner corners of the rectangular frame and the middle point of the cross beam (2); the gusset plate (3) and the force transmission plate (5) are respectively provided with a matched bolt hole, and the gusset plate (3) and the force transmission plate (5) are fixedly connected through bolts.

5. The window-shaped grid double lateral force resisting support frame is characterized in that the upright columns (1) are rectangular steel pipe columns, circular steel pipe columns, rectangular steel pipe concrete columns or circular steel pipe concrete columns; the beam (2) is an I-shaped steel beam.

6. The window-shaped grid double lateral force resisting support frame as claimed in claim 1, wherein the support columns (11), the support beams (13) and the short diagonal braces (10) are all square steel tubes, round steel tubes, I-steel braces, T-steel braces, L-steel braces, channel steel braces, cross steel braces or L-steel braces.