CN111749329A - Dual anti side force braced frame of window shape net - Google Patents

Dual anti side force braced frame of window shape net Download PDF

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Publication number
CN111749329A
CN111749329A CN202010738893.5A CN202010738893A CN111749329A CN 111749329 A CN111749329 A CN 111749329A CN 202010738893 A CN202010738893 A CN 202010738893A CN 111749329 A CN111749329 A CN 111749329A
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CN
China
Prior art keywords
support
window
upright posts
supports
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010738893.5A
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Chinese (zh)
Inventor
郝际平
樊春雷
陈永昌
黄育琪
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Publication date
Application filed by Xian University of Architecture and Technology filed Critical Xian University of Architecture and Technology
Priority to CN202010738893.5A priority Critical patent/CN111749329A/en
Publication of CN111749329A publication Critical patent/CN111749329A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
    • E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/024—Structures with steel columns and beams
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2406—Connection nodes

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 grid support system of the invention 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 generate buckling damage of the support rod piece, and is easy to control the buckling damage of the support.

Description

Dual anti side force braced frame of window shape net
Technical Field
The invention belongs to the technical field of lateral force resisting support frames, and particularly relates to a window-shaped grid dual lateral force resisting support frame.
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.
Disclosure of Invention
The invention aims to provide a window-shaped grid double lateral force resisting support frame to solve the problems.
In order to achieve the purpose, the invention 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 invention has the following technical effects:
the grid support system of the invention 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 generate buckling damage of the support rod piece, and is easy to control the buckling damage of the support.
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 connections of the present invention;
FIG. 5 is a schematic view of the overall structure of the present invention;
FIGS. 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 invention is further described below 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 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 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 the detailed diagram of the framework of the invention in figure 1, the framework with single span and two layers consists of two upright posts 1 and two beams 2, wherein the two upright posts are vertically arranged, and two ends of the beam are welded on the upright posts. 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 is an exploded detail view and a detail view of the grid support of the present invention, and the grid support comprises short diagonal supports 10, support columns 11, herringbone supports 12 and support cross beams 13. The formed grid support is prefabricated in the factory.
Referring to fig. 4, which is a detailed view of the joint connection of the present invention, the support columns 11 are bolted to the beam flanges through end plates, the herringbone supports are bolted to the frame joint plates through force transmission plates, and the short diagonal supports 10 are bolted to the frame joint plates 3 through force transmission plates 5.
Referring to fig. 5, the overall structure of the present invention is schematically illustrated, and the grid support is connected to the frame by bolts through the connection manner shown in fig. 3 and 4.
The window-shaped grid double lateral force resisting support frame unit provided by the invention effectively reduces the length and size of the rod piece and improves the lateral force resisting stability and structural ductility of a building. 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 mechanical properties of the pane-type grid-supported multi-lateral-force-resisting support frame unit are described by carrying out finite element simulation on the invention.
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).
According to the design principle of an earthquake-proof concept, the invention provides a window-shaped grid dual-lateral-force-resistant support frame unit, under the earthquake action, the support frame firstly consumes energy through elastic-plastic deformation, meanwhile, because the grid support disperses the support force 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 slower, and the 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.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

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.
CN202010738893.5A 2020-07-28 2020-07-28 Dual anti side force braced frame of window shape net Pending CN111749329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010738893.5A CN111749329A (en) 2020-07-28 2020-07-28 Dual anti side force braced frame of window shape net

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010738893.5A CN111749329A (en) 2020-07-28 2020-07-28 Dual anti side force braced frame of window shape net

Publications (1)

Publication Number Publication Date
CN111749329A true CN111749329A (en) 2020-10-09

Family

ID=72712285

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010738893.5A Pending CN111749329A (en) 2020-07-28 2020-07-28 Dual anti side force braced frame of window shape net

Country Status (1)

Country Link
CN (1) CN111749329A (en)

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