CN212336310U - Dual anti side force braced frame of rhombus supporting grid - Google Patents

Abstract

A dual-lateral-force-resisting supporting frame of a rhombic supporting grid comprises upright posts, cross beams and the rhombic grid; 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; rhombus grids are fixedly arranged in each rectangular frame, and the diagonal lines of the rhombus grids are perpendicular to the upright posts or the cross beams. The utility model discloses the net supports effectual calculation length that has reduced the support member, and the slenderness ratio of support member is little, and anti bucking ability is good, and difficult emergence is supported member bucking and is destroyed, and buckling destruction is supported in easily controlled.

Description

Dual anti side force braced frame of rhombus supporting grid

Technical Field

The utility model belongs to the technical field of building engineering bearing structure, in particular to dual anti side force braced frame of rhombus support 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.

SUMMERY OF THE UTILITY MODEL

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

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

a dual-lateral-force-resisting supporting frame of a rhombic supporting grid comprises upright posts, cross beams and the rhombic grid; 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; rhombus grids are fixedly arranged in each rectangular frame, and the diagonal lines of the rhombus grids are perpendicular to the upright posts or the cross beams.

Furthermore, the rhombic grids comprise supporting rods, end plates and force transmission plates; four bracing pieces weld and form the rhombus frame, and four corners of rhombus frame all weld the end plate, and the biography power board welds on the end plate.

Furthermore, node plates are welded at the middle points of four edges of the rectangular frame, and matched bolt holes are formed in the node plates and the force transmission plate; the gusset plate and the force transmission plate are 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 support rod is a square steel pipe, a round steel pipe, an I-shaped steel support, a T-shaped steel support, an L-shaped steel support, a channel-shaped steel support, a cross-shaped steel support or an L-shaped steel support.

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

the utility model discloses the net supports effectual calculation length that has reduced the support member, and the slenderness ratio of support member is little, and anti bucking ability is good, and difficult emergence is supported member bucking and is destroyed, and buckling destruction is supported in easily controlled.

The utility model discloses reduce the member size, conveniently support and hide in the wall body, realize envelope integration, be favorable to building pleasing to the eye and functional design.

The utility model discloses the rigidity degradation of net braced frame structure more does benefit to the antidetonation power consumption slowly, owing to have dual tensile compressional bar spare, 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. While still having greater stiffness and load bearing capacity.

The utility model discloses the net supports can be prefabricated in the mill, passes through bolted connection with the frame, has improved the assemblization of structure and has assembled speed, fully adapts to assembled steel construction's requirement and characteristics, accords with the assembled building development requirement.

The utility model discloses simple structure, installation, replacement, transportation convenience, the separable assembly of net support, but also enclosure wall body integration, integral hoisting easily realizes the assembly.

Drawings

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

FIG. 2 is a detailed view of the grid support of the present invention;

FIG. 3 is a detailed view of the node connection of the present invention;

FIG. 4 is a schematic view of the overall structure of the present invention;

fig. 5(a) - (c) are schematic diagrams of the yield failure process of the present invention;

fig. 6 is a schematic view of the hysteresis curve of the present invention;

in the figure: 1. a column; 2. a beam; 3. a gusset plate; 4. a gusset plate; 5. an end plate; 6. a force transmission plate; and 7, supporting.

Detailed Description

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

referring to fig. 1 to 6, a dual lateral force resisting support frame of a rhombic support grid comprises an upright post 1, a cross beam 2 and a rhombic grid; 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; rhombus grids are fixedly arranged in each rectangular frame, and the diagonal lines of the rhombus grids are perpendicular to the upright posts 1 or the cross beams 2.

The rhombic grids comprise supporting rods 7, end plates 5 and force transmission plates 6; four bracing pieces 7 weld and form the rhombus frame, and four corners of rhombus frame all weld has end plate 5, and dowel plate 6 welds on end plate 5. The grid support effectively reduces the calculated length of the support rod piece, the length-to-fineness ratio of the support rod piece is small, the buckling resistance is good, buckling damage of the support rod piece is not prone to occurring, and buckling damage of the support is easy to control.

The middle points of four edges of the rectangular frame are welded with the gusset plates 3, and the gusset plates 3 and the force transmission plate 6 are provided with matched bolt holes; the gusset plate 3 and the force transmission plate 6 are fixedly connected by bolts.

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 support rod 7 is a square steel pipe, a round steel pipe, an I-shaped steel support, a T-shaped steel support, an L-shaped steel support, a channel steel support, a cross steel support or an L-shaped steel support.

As shown in fig. 1 the utility model discloses the detailed frame is shown, and single stride two-layer frame comprises two stands 1 and two roof beams 2, and two stands are vertical to be arranged, and the welding of crossbeam both ends is on the stand, at frame post and support hookup location welded joint board 3, supports and roof beam 2 hookup location welded joint board 4 on the roof beam.

As shown in fig. 2, the grid support detail view of the present invention shows that the diamond support is formed by four supports 7, each two support ends are welded on the end plate 5, and the force transmission plate 6 is welded on each end plate 5. This structure can be factory prefabricated.

As shown in fig. 3, the node connection detail view of the present invention shows that the grid support is connected with the node plate of the frame through the force transmission plate on the supporting end plate by bolts. In addition, the grid support can be connected with the beam column through the end plate and the direct bolt by arranging corresponding bolt holes on the support end plate and the beam column.

As shown in fig. 4, the overall structure of the utility model is schematically illustrated, the grid support is connected to the frame through the connection mode shown in fig. 3, forming the patent of the utility model.

The utility model relates to a rhombus supports dual anti side force braced frame unit of net and 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 carry out the finite element simulation below and explain the dual anti side force braced frame unit's of rhombus supporting grid mechanical properties.

Finite element simulation was performed on the diamond grid supports using the ABAQUS software, with the frame beams at 400 × 200 × 8 × 12, the frame columns at 350 × 350 × 14, and the supports at 110 × 110 × 6, and the results of the finite element analysis are shown in fig. 5 and 6.

Due to the fact that the rhombic grids are used for supporting, the ductility and the seismic performance of the structure are good. The diamond-shaped mesh support failure sequence is shown in fig. 5(a) - (c), the upper right support rod in the mesh support yields firstly when being pressed along with the increase of vertex displacement, the lower left rod can still provide rigidity through internal force redistribution after the rod is broken, the rigidity degradation of the whole structure is ensured to be slow, and then the lower left rod is broken under pressure, and the final failure of the whole structure is shown in fig. 5 (c).

The utility model discloses according to antidetonation concept design principle, provide a dual anti side force braced frame unit of rhombus support net, at first through the elastoplasticity deformation power consumption of under bracing under the earthquake effect, the rhombus supports simultaneously owing to discretizing into four members with the holding power, destroys the back when certain member, and internal force redistribution, other members still can provide rigidity, and whole structural rigidity degradation is slower, and ductility performance is better. In addition, in the aspect of initial rigidity, the diamond grid support still has larger rigidity and bearing capacity on the premise of not increasing the steel consumption. As shown in fig. 6, the hysteresis curve is full, no pinch phenomenon exists, the energy consumption capability of the rhombic grid support is good, 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 (5)

1. The double-lateral-force-resisting supporting frame of the rhombic supporting grids is characterized by comprising upright posts (1), cross beams (2) and the rhombic grids; 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; rhombus grids are fixedly arranged in each rectangular frame, and the diagonal lines of the rhombus grids are perpendicular to the upright posts (1) or the cross beams (2).

2. A diamond-shaped supporting grid dual lateral force resisting supporting frame according to claim 1, characterized in that the diamond-shaped grid comprises supporting rods (7), end plates (5) and force transmission plates (6); four bracing pieces (7) welding form the rhombus frame, and end plate (5) have all been welded in four corners of rhombus frame, and dowel steel (6) welding is on end plate (5).

3. The dual-lateral-force-resisting supporting frame of the rhombic supporting grid according to the claim 2 is characterized in that the gusset plates (3) are welded to the middle points of four sides of the rectangular frame, and the gusset plates (3) and the force transfer plates (6) are provided with matched bolt holes; the gusset plate (3) and the force transmission plate (6) are fixedly connected through bolts.

4. The dual lateral force resisting support frame of the rhombic support grid according to the claim 1, wherein 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.

5. A dual lateral force resisting supporting frame with rhombic supporting grids as claimed in claim 1, characterized in that the supporting rods (7) are square steel tubes, round steel tubes, I-shaped steel supports, T-shaped steel supports, L-shaped steel supports, channel steel supports, cross-shaped steel supports or L-shaped steel supports.

Images