CN112609823A - Steel frame structure internally filled with energy-consuming truss and installation method thereof - Google Patents

Steel frame structure internally filled with energy-consuming truss and installation method thereof Download PDF

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Publication number
CN112609823A
CN112609823A CN202011395932.2A CN202011395932A CN112609823A CN 112609823 A CN112609823 A CN 112609823A CN 202011395932 A CN202011395932 A CN 202011395932A CN 112609823 A CN112609823 A CN 112609823A
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CN
China
Prior art keywords
truss
energy
frame
consuming
steel
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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
CN202011395932.2A
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Chinese (zh)
Inventor
郑宏
芦贵强
谢亚欣
孙志伟
尚永芳
苏耀烜
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Changan University
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Changan University
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Filing date
Publication date
Application filed by Changan University filed Critical Changan University
Priority to CN202011395932.2A priority Critical patent/CN112609823A/en
Publication of CN112609823A publication Critical patent/CN112609823A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403Connection details of the elongated load-supporting parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/024Structures with steel columns and beams
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403Connection details of the elongated load-supporting parts
    • E04B2001/2406Connection nodes
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403Connection details of the elongated load-supporting parts
    • E04B2001/2418Details of bolting

Abstract

The invention discloses a steel frame internally-filled energy-consuming truss structure and an installation method thereof, and belongs to the field of constructional engineering. The internal filling energy consumption truss is flexible in arrangement, and can be used for steel frame structure design with different seismic performance requirements and structure reinforcement. The internally filled energy-consuming truss is installed after the frame structure main body is completed, the weight of the upper structure is not borne, only the transverse load is borne, the whole truss is mainly subjected to bending deformation under the action of the transverse load or earthquake force, the original deep beam is converted into tension or compression of two force rods in the truss through bending and shearing deformation, the stress is more reasonable, and the steel performance can be fully utilized. The structure of the invention can realize gradual change adjustment of rigidity and bearing capacity according to different earthquake-resistant requirements, overcomes the defect of unbalanced plastic development of the infill steel plate, and has simple structure and convenient construction.

Description

Steel frame structure internally filled with energy-consuming truss and installation method thereof
Technical Field
The invention belongs to the field of constructional engineering, and relates to a steel frame structure internally filled with energy-consuming trusses and an installation method thereof.
Background
The steel frame and the steel frame infill shear wall reflect two endpoint values of the rigidity change of the frame structure, and the rigidity amplification is of a catastrophe property. In order to research the problem of gradual change of rigidity, the research group provided a steel frame filled steel-concrete combined deep beam structure in the early days. The steel-concrete combined deep beam is formed by connecting a steel plate deep beam and an outer prefabricated reinforced concrete plate through bolts, the outer concrete is coated on the steel plate to play an important role in avoiding local out-of-plane buckling, and different lateral displacement resisting rigidity can be obtained by changing the cross-section span-height ratio of the deep beam. However, through research, when the structure is damaged under the action of cyclic load, the plasticity of the steel plates in the steel-concrete combined deep beam is unbalanced, the plasticity of the edge steel plates is fully developed, and the plasticity of the steel plates in the middle area is not fully developed.
Based on this, it is necessary to develop a new steel frame filled energy consuming truss structure, which can solve the above problems.
Disclosure of Invention
The invention aims to overcome the defect of unbalanced plastic development of a steel plate in a steel-concrete combined deep beam in the prior art, and provides a steel frame internally-filled energy dissipation truss structure and an installation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a steel frame structure internally filled with energy-consuming trusses comprises a bottom beam, frame beams, two frame columns and energy-consuming trusses, wherein column feet are arranged at the bottoms of the frame columns and connected with the lower flange of the bottom beam; the energy dissipation truss comprises a chord member and a web member, and a support body is arranged between the chord member and the web member.
Preferably, the top of the frame beam is provided with a top beam which is parallel to the bottom beam.
Preferably, the fastening means comprises a base plate and a bolt; the bottom plate is arranged on one side of the column base and is connected with the upper flange of the bottom beam through a bolt.
Preferably, the web members and the chords are welded by gusset plates.
Preferably, the chord member is a T-section bar composed of two equal limb angle steels; the web members are connected by BRB.
Preferably, the support body is a diagonal support or a herringbone support.
Preferably, the frame beam lower flange, the bottom beam upper flange and the energy dissipation truss chord member are all provided with round holes for connecting bolts.
Preferably, the web member comprises a sleeve, a core rod and fine aggregate concrete, the core rod is positioned in the center of the sleeve, the core rod is provided with a non-adhesive material layer, and the fine aggregate concrete is filled in the sleeve.
Further preferably, the shape of the core rod is a straight shape, a cross shape or an I shape; the core rod is made of steel with low yield point.
A method for installing a steel frame structure internally filled with energy consumption trusses comprises the following steps: after the bottom beam is installed, the frame column and the bottom beam are fastened and connected through the high-strength bolt, the column foot at the bottom of the frame column is reinforced, the frame beam and the frame column are welded, a needed energy dissipation truss is designed according to the actual anti-seismic design requirement of the engineering, the web member and the chord member are welded, a round hole is reserved in the appointed position of the chord member, and the web member and the bottom beam are connected through the high-strength bolt.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a steel frame structure internally filled with energy-consuming trusses, which is flexible in arrangement, can be used for steel frame structure design with different requirements on anti-seismic performance, and can also be used for structure reinforcement. The gradual change adjustment of rigidity and bearing capacity can be realized according to different anti-seismic requirements, and the defect of unbalanced plastic development of the infill steel plate is overcome. The rigidity of the structure can be adjusted in a large range by changing the span-height ratio of the truss. Simple structure, construction convenience, the practicality is stronger.
Furthermore, the web members are supported by BRB without bonding, so that the parallel chord trusses become energy consumption trusses, and the energy consumption capability of the structure is improved; different bearing capacities can be obtained by adopting chord members and web members made of different steel materials; the gradual change adjustment of rigidity and bearing capacity can be realized according to different anti-seismic requirements, and the defect of unbalanced plastic development of the infill steel plate is overcome.
Furthermore, the two ends of the truss are connected with the frame beam through bolts, so that the truss is easy to mount and dismount, convenient for operation of workers and wide in application range.
The invention also discloses an installation method of the steel frame structure of the internally filled energy-consuming truss, the internally filled energy-consuming truss is installed after the main body of the frame structure is finished, the weight of the upper structure is not borne, only the transverse load is borne, the whole truss is mainly subjected to bending deformation under the action of the transverse load or earthquake force, the original deep beam is converted into tension or compression of two force rods in the truss by bending and shearing deformation, the stress is more reasonable, and the performance of steel can be fully utilized. And all components of the truss can be prefabricated, so that the truss can be conveniently manufactured, installed or disassembled to replace the damaged truss, and the lateral force resistance of the structure can be quickly recovered. Convenient construction and wide application range.
Drawings
FIG. 1 is a front view of a steel frame structure with an energy dissipating truss filled therein according to the present invention with a diagonal bracing structure inside the truss;
FIG. 2 is a front view of the steel frame structure with the energy-dissipating truss filled therein according to the present invention, with the truss being a herringbone bracing energy-dissipating structure;
FIG. 3 is a cross-sectional view of a support web of a chord BRB;
wherein: 1-frame beam, 2-frame column, 3-energy consumption truss; 31-straight web member; 32-diagonal web members; 33-gusset plate; 34-a chord; 4-a bottom beam; 5-column base; 6-a sleeve; 7-core rod; 8-a layer of non-adhesive material; 9-fine aggregate concrete.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is described in further detail below with reference to the accompanying drawings:
example 1
As shown in fig. 1, the energy dissipation truss filled in the steel frame comprises a frame beam 1, a frame column 2, an energy dissipation truss 3, a bottom beam 4 and column feet 5, wherein the frame beam 1 and the frame column 2 are arranged vertically; the bottom of the frame column 2 is provided with a column foot 5, the column foot 5 is connected with the lower flange of the bottom beam 4, the number of the frame columns 2 is two, two ends of the frame beam 1 are respectively connected with the tops of the two frame columns 2, and the energy dissipation truss 3 is vertically arranged in the span of the frame beam 1 and is respectively connected with the bottom beam 4 and the frame beam 1 through a fastening device; the energy consumption truss 3 comprises straight web members 31, inclined web members 32, node plates 33 and chord members 34, and a support body is arranged between the chord members 34 and the web members. The support body is an inclined strut. The cross section of the web member is I-shaped.
Example 2
The contents are the same as those of example 1 except for the following.
As shown in fig. 2, two stiffening ribs are transversely arranged on the top of the frame column 2, and the stiffening ribs are flush with the flange of the frame beam 1. The support body is a herringbone support. The cross section of the web member is hollow and rectangular.
Example 3
The contents are the same as those of example 1 except for the following.
The top of the frame beam 1 is provided with a top beam which is parallel to the bottom beam 4. The column foot 5 consists of a bottom plate and an anchor bolt, and the fastening device comprises a bottom plate and a bolt; the bottom plate is disposed at one side of the column shoe 5 and is connected to the upper flange of the bottom beam 4 by bolts. Namely, the frame column 2 is used for fixedly connecting the bottom plate with the upper flange of the bottom beam 4 through a high-strength bolt. Round holes for connecting bolts are formed in the lower flange of the frame beam 1, the upper flange of the bottom beam 4 and the chord member 34. The cross section of the web member is cross-shaped.
Example 4
The contents are the same as those of example 1 except for the following.
As shown in fig. 3, the web members and the chords 34 are welded by gusset plates 33. The chord member 34 is a T-shaped section bar composed of two equal limb angle steels; the straight web member 31 and the diagonal web member 32 are connected by BRB. The straight web members 31 and the diagonal web members 32 are both prepared by using a sleeve 6, a core bar 7, an unbonded material layer 8 and fine aggregate concrete 9, the sleeve 6 is a square steel pipe, and the core bar 7 is prepared by using steel with low yield point. The cross section of the web member is in a straight shape.
The device of the invention comprises the following steps in the installation process:
after the bottom beam 4 is installed, the frame column 2 and the bottom beam 4 are fastened and connected through the high-strength bolt, the column foot 5 at the bottom of the frame column 2 is reinforced, the frame beam 1 and the frame column 2 are welded, a required energy dissipation truss is designed according to the actual anti-seismic design requirement of engineering, the web member is welded with the chord member 34, a round hole is reserved in the designated position of the chord member 34, and the frame beam 1 and the bottom beam 4 are connected through the high-strength bolt. The web members of the energy dissipation truss are supported by BRB and are composed of inner cores, unbonded materials and outer-wrapped steel pipes or steel pipe concrete, and the web members and the chord members 34 are welded by gusset plates 33.
It should be noted that the energy dissipation truss 3 is prefabricated by a factory and is connected with the top beam of the bottom beam 4 through a high-strength bolt. The connection mode of the embodiment is formed by splicing high-strength bolts on site, and the assembly design construction is realized. The beam column adopts H-shaped steel, the chord member 34 adopts a T-shaped section chord member formed by splicing two angle steels, and the used materials can be realized in a steel structure processing factory. The non-adhesive material layer 8 in the embodiment can use corrosion-proof rust-proof lubricating oil or other non-adhesive coating, and the low yield point steel can use 08F steel, LY100 steel or LY225 steel.
The span-height ratio is the ratio of the length of the truss arranged on the beam section to the height of the truss. According to different seismic fortification intensity requirements of different regions, the seismic design requirements can be met by arranging proper trusses. The span of the truss is the length arranged on the beam section, the height of the truss is the net height of each floor, and the height cannot be changed, so that the span-height ratio can be changed by changing the arranged length. Stiffness is the ability of a structure to resist horizontal deformation. And the more the structure is arranged with the anti-side displacement members (such as supports and the like), the greater the anti-side rigidity is naturally, and the longer the arrangement length is, the greater the rigidity is naturally, and therefore, the greater the span height ratio is, the greater the rigidity is naturally, the adjusted by practical requirements. It is also possible to vary the steel grade, whether the elements are arranged singly or in multiples within the same beam section to vary load bearing and stiffness.
In summary, the internal filling energy-consuming truss in the device is flexible in arrangement, and can be used for structural design of steel frames with different seismic performance requirements and structural reinforcement. The internally filled energy-consuming truss is installed after the frame structure main body is completed, the weight of the upper structure is not borne, only the transverse load is borne, the whole truss is mainly subjected to bending deformation under the action of the transverse load or earthquake force, the original deep beam is converted into tension or compression of two force rods in the truss through bending and shearing deformation, the stress is more reasonable, and the steel performance can be fully utilized. The structure of the invention can realize gradual change adjustment of rigidity and bearing capacity according to different earthquake-resistant requirements, and simultaneously overcomes the defect of unbalanced plastic development of the infill steel plate.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims (10)

1. The steel frame structure internally filled with the energy-consuming truss is characterized by comprising a bottom beam (4), a frame beam (1), frame columns (2) and the energy-consuming truss (3), wherein column feet (5) are arranged at the bottoms of the frame columns (2), the column feet (5) are connected with the lower flange of the bottom beam (4), two frame columns (2) are arranged, two ends of the frame beam (1) are respectively connected with the tops of the two frame columns (2), and the energy-consuming truss (3) is vertically arranged in the span of the frame beam (1) and is respectively connected with the bottom beam (4) and the frame beam (1) through fastening devices; the energy dissipation truss (3) comprises a chord member (34) and a web member, and a support body is arranged between the chord member (34) and the web member.
2. The steel frame structure filled with energy consumption trusses as claimed in claim 1, wherein top beams are provided on top of the frame beams (1), and the top beams are parallel to the bottom beams (4).
3. The steel frame structure of the energy-consuming truss as recited in claim 1, wherein the fastening means comprises a bottom plate and bolts; the bottom plate is arranged on one side of the column base (5) and is connected with the upper flange of the bottom beam (4) through a bolt.
4. The steel frame structure of an energy-consuming truss filled in accordance with claim 1, wherein the web members and the chords (34) are welded by gusset plates (33).
5. The steel frame structure of the filled energy truss as recited in claim 1, wherein the chords (34) are T-section bars formed by two equal limb angle steels; the web members are connected by BRB.
6. The steel frame structure of the filled energy truss of claim 1, wherein the support body is a diagonal support or a herringbone support.
7. The steel frame structure internally filled with the energy-consuming truss according to claim 1, wherein circular holes for connecting bolts are formed in the lower flange of the frame beam (1), the upper flange of the bottom beam (4) and the chord members (34).
8. The steel frame structure of an internally filled energy consuming truss according to claim 1, wherein the web members comprise a sleeve (6), a core bar (7) and fine stone concrete (9), the core bar (7) is positioned at the center of the sleeve (6), the core bar (7) is provided with a non-adhesive material layer (8), and the fine stone concrete (9) is filled in the sleeve (6).
9. The steel frame structure of the filled energy consumption truss according to claim 8, wherein the shape of the core bar (7) is a straight shape, a cross shape or an I shape; the core rod (7) is prepared by adopting steel with low yield point.
10. The mounting method of the steel frame structure internally filled with the energy dissipation truss is characterized by comprising the following steps of: after the bottom beam (4) is installed, the frame column (2) is fixedly connected with the bottom beam (4) through the high-strength bolt, a column base (5) at the bottom of the frame column (2) is reinforced, the frame beam (1) is welded with the frame column (2), a required energy-consuming truss is designed according to the actual anti-seismic design requirement of engineering, the web member is welded with the chord member (34), a round hole is reserved in the designated position of the chord member (34), and the frame column (2) is connected with the bottom beam (4) through the high-strength bolt.
CN202011395932.2A 2020-12-03 2020-12-03 Steel frame structure internally filled with energy-consuming truss and installation method thereof Pending CN112609823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011395932.2A CN112609823A (en) 2020-12-03 2020-12-03 Steel frame structure internally filled with energy-consuming truss and installation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011395932.2A CN112609823A (en) 2020-12-03 2020-12-03 Steel frame structure internally filled with energy-consuming truss and installation method thereof

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Publication Number Publication Date
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100005737A1 (en) * 2008-07-09 2010-01-14 National Applied Research Laboratories Buckling restrained brace
JP2011038374A (en) * 2009-08-18 2011-02-24 Shimizu Corp Composite structure of building
CN103835400A (en) * 2014-03-10 2014-06-04 北京工业大学 Prestress steel plate shear wall
CN103883029A (en) * 2014-03-11 2014-06-25 北京工业大学 Assembling type reinforcing steel plate shear wall
CN204876147U (en) * 2015-06-24 2015-12-16 上海赛弗工程减震技术有限公司 Support formula power consumption mechanism of insertible frame
CN107882178A (en) * 2017-11-23 2018-04-06 哈尔滨工业大学深圳研究生院 Assembled Super High steel concrete combines house
CN208137186U (en) * 2018-03-19 2018-11-23 北京工业大学 Assembling truss type light steel frame-punching sheet metal-Combined concrete wall
CN111648494A (en) * 2020-06-15 2020-09-11 天津大学建筑设计规划研究总院有限公司 Assembled both sides connection steel grid shear force wall convenient to replacement
CN211499300U (en) * 2019-12-19 2020-09-15 长安大学 Crack corrugated steel plate shear wall capable of being replaced after earthquake
CN111980218A (en) * 2020-08-04 2020-11-24 中国建筑标准设计研究院有限公司 Assembled out-of-plane constraint energy dissipation steel plate shear wall frame and construction method thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100005737A1 (en) * 2008-07-09 2010-01-14 National Applied Research Laboratories Buckling restrained brace
JP2011038374A (en) * 2009-08-18 2011-02-24 Shimizu Corp Composite structure of building
CN103835400A (en) * 2014-03-10 2014-06-04 北京工业大学 Prestress steel plate shear wall
CN103883029A (en) * 2014-03-11 2014-06-25 北京工业大学 Assembling type reinforcing steel plate shear wall
CN204876147U (en) * 2015-06-24 2015-12-16 上海赛弗工程减震技术有限公司 Support formula power consumption mechanism of insertible frame
CN107882178A (en) * 2017-11-23 2018-04-06 哈尔滨工业大学深圳研究生院 Assembled Super High steel concrete combines house
CN208137186U (en) * 2018-03-19 2018-11-23 北京工业大学 Assembling truss type light steel frame-punching sheet metal-Combined concrete wall
CN211499300U (en) * 2019-12-19 2020-09-15 长安大学 Crack corrugated steel plate shear wall capable of being replaced after earthquake
CN111648494A (en) * 2020-06-15 2020-09-11 天津大学建筑设计规划研究总院有限公司 Assembled both sides connection steel grid shear force wall convenient to replacement
CN111980218A (en) * 2020-08-04 2020-11-24 中国建筑标准设计研究院有限公司 Assembled out-of-plane constraint energy dissipation steel plate shear wall frame and construction method thereof

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