The steel plate shear force wall that a kind of tensile force of belt supports
Technical field
The present invention relates to the steel plate shear force wall that a kind of novel tensile force of belt supports, belong to technical field of structural engineering.
Technical background
At present, adopt in the world steel plate shear force wall to have building more than 20 as the building of main lateral resistant member, be mainly distributed in the Areas of High Earthquake Intensity district such as North America and Japan.Since Nippon Steel Corporation in 1970 is applied in building by steel plate shear force wall, existing more than 40 year of the development of steel plate shear force wall.Steel plate shear wall structure system is made up of embedded steel plate and edge member, and edge member comprises edge girder and edge posts.Embedded steel plate conventionally and edge member connect and compose lateral resisting structure system, this structural system can be considered the semi girder fixing on the ground.
According to the thickness of embedded steel plate, steel plate shear force wall can be divided into steel plate shear wall and thin steel plate shear wall; According to whether ribbing of surface of steel plate, steel plate shear force wall can be divided into stiffening rib steel plate shearing force wall and non-stiffening rib steel plate shearing force wall; Whether crack according to surface of steel plate, steel plate shear force wall can be divided into slotted steel plate shear wall and slotted steel plate shear wall not; Whether arrange concrete slab according to steel plate side, steel plate shear force wall can be divided into steel plate-concrete combined shear wall and general steel plate shear wall.Although thin steel plate shear wall has good economic benefit, its easier flexing.Other forms of steel plate shear force wall is target mainly with the deformity out of plane that stops steel plate greatly, allows steel plate keep as much as possible planar working to consume more energy.
In China's " Technical Specification for Steel Structure of Tall Buildings " JGJ99-98, appendix four stipulates, for preventing steel plate shear force wall generation shear buckling, should be using the shear buckling bearing capacity of steel plate as its ultimate bearing capacity, or make by steel plate is put more energy into, before its surrender, flexing does not occur.In fact, above two kinds of modes are all partial to conservative and cost is higher, are unfavorable for development and the application of steel plate shear force wall.Along with both at home and abroad, to the going deep into of steel plate shear force wall research, after the flexing of steel plate shear force wall, performance has obtained paying close attention to widely, and steel plate shear force wall still has higher bearing capacity, good ductility and stable energy dissipation capacity after flexing.The Post-Bucking Strength that makes full use of steel plate shear force wall not only can make structure obtain good anti-seismic performance, and can significantly reduce steel using amount, reduces cost, increases economic efficiency.
Summary of the invention
The present invention proposes the steel plate shear force wall that a kind of novel tensile force of belt supports, its object is, overcome thin steel plate shear wall and can not give full play to the shortcoming of the strength and ductility of steel because of too early flexing, improve flat lateral stability and the ultimate bearing capacity of steel plate shear force wall, given full play to the advantage of steel.
Do not establish the thin steel plate shear wall that pulling force supports, when load is during along a directive effect, embedded steel plate generation flexing also forms pull strap, is accompanied by larger face and is out of shape outward; In the time of external load acting in opposition, pull strap originally, by reverse pressurized, no longer provides rigidity; Meanwhile, original pressurized zone will be transited into pulling force zone, but due to larger lateral deflection distortion once occurring under higher level's load, be out of shape the process that is stretched to " open and flat ", until the formation of reversal interlocking relay band therefore have.In this course, steel plate cannot bearing load, and structure only depends on beam column to bear external load, and the pulling force field being anchored at like this on framework can produce larger additional bending moment to side column, has increased the stable burden of pillar.So the setting that pulling force supports, has limited the larger deformity out of plane after embedded steel plate flexing on the one hand, and lateral restraint is provided; Two on the one hand, and when load reversal does the used time, pulling force supports can bear external load effect, avoids increasing the burden of pillar.And steel plate wall is only connected with Vierendeel girder, the defect of having avoided four limit junction steel plate walls not punch, so can well be applied in many high-rise steel structure as lateral resistant member.
The steel plate shear force wall that the tensile force of belt that the present invention proposes supports, is characterized in that, described tensile force of belt supporting steel plate shear wall is made up of embedded steel plate, pulling force support, bracket, connection otic placode, L shaped junction plate, edge member, Vierendeel girder and frame column; Described embedded steel plate adopts steel sheet; Described pulling force supports and adopts prestressed cable; Described bracket is the support vertical with steel plate surface that can connect prestressed cable with holes; Described connection otic placode is the end otic placode of fixing prestressed cable; Described L shaped junction plate is the steel plate in strap bolt hole; Described edge member is respectively vertical edge member and horizontal edge member; Described embedded steel plate is connected with vertical edge member and horizontal edge member; Described pulling force supports that bracket is fixed in one end and described connection otic placode is fixed in one end, and described bracket is connected with vertical edge member; Described connection otic placode is connected with Vierendeel girder.Described vertical edge member is connected by L shaped junction plate with horizontal edge member.Described Vierendeel girder is connected with frame column.
In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described embedded steel plate adopts the high ductility steel of low-yield or the high ductility steel of high strength.And four bight cuttings, facilitate the connection between edge member.
In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described embedded steel plate and described bracket adopt welding.
In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described embedded steel plate be divided into two kinds being connected of edge member, the first and edge member all weld, it two is to be connected with edge member bolt.
In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described pulling force supports one end and is connected with bracket, one end be connected otic placode connection.
In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described pulling force support, described bracket, described connection otic placode and described L shaped junction plate are arranged in described embedded steel plate bilateral symmetry.
In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described vertical edge member is connected by L shaped junction plate bolt with described horizontal edge member.
In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described connection otic placode is arranged symmetrically with at position, the described Vierendeel girder edge of a wing, and welds with Vierendeel girder.
In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described horizontal edge member is connected with described Vierendeel girder welding or bolt.
In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described Vierendeel girder welds with described frame column or bolt is connected or bolt is soldered connects.
The present invention supports by pulling force is set on four angles traditional thin steel plate shear wall, can effectively limit steel plate wall deformity out of plane, improves anti-side rigidity, power consumption and the ductile performance of steel plate wall.Traditional steel plate shear force wall is the flat lateral stability of controlling steel plate shear force wall by stiffening rib is set on steel plate, belong to passive control method, the present invention on steel plate shear force wall initiatively apply prestressing force, control the flat lateral stability of steel plate shear force wall, simultaneously, prestressed cable can be born certain pulling force in the pull strap direction of steel plate shear force wall, belongs to control method initiatively.And steel plate shear force wall is only connected with structural beams, avoids increasing the burden of structural column.All members of this invention can be in factory process, and then, in assembling on the spot, construction is simple, reduces cost, is applicable to assembling type steel structure.
The steel plate shear force wall that tensile force of belt provided by the invention supports is the novel lateral resistant member of one of high-rise building steel structure or other structure.
Accompanying drawing explanation
Fig. 1 is the steel plate shear wall structure schematic diagram that tensile force of belt of the present invention supports.
Fig. 2 is the steel plate shear force wall unit decomposition figure that tensile force of belt of the present invention supports.
In figure: 1-embedded steel plate, 2-pulling force supports, 3-bracket, 4-connection otic placode, 5-L shaped junction steel plate, 6-vertical edge member, 7-horizontal edge member, 8-Vierendeel girder, 9-frame column.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Described tensile force of belt supporting steel plate shear wall is by embedded steel plate 1, pulling force support 2, bracket 3, connection otic placode 4, L shaped junction plate 5, edge member, and Vierendeel girder 8 and frame column 9 form; Described steel plate 1 adopts steel sheet; Described pulling force supports 2 and adopts prestressed cable; Described bracket 3 is the support vertical with steel plate surface that can connect prestressed cable with holes; The end otic placode that described connection otic placode 4 is fixing prestressed cable; Described L shaped junction plate 5 is the steel plate in strap bolt hole; Described edge member is respectively vertical edge member 6 and horizontal edge member 7; Described embedded steel plate 1 is connected with vertical edge member 6 and horizontal edge member 7; Described pulling force supports that bracket 3 is fixed in 2 one end and described connection otic placode 4 is fixed in one end, and described bracket 3 is connected with vertical edge member 6; Described connection otic placode 4 is connected with Vierendeel girder 8; Described vertical edge member 6 is connected by L shaped junction plate 5 with horizontal edge member 7.Described Vierendeel girder 8 is connected with frame column 9.
In tensile force of belt supporting steel plate shear wall steel plate shear force wall, described embedded steel plate 1 adopts the high ductility steel of low-yield or the high ductility steel of high strength.In the steel plate shear force wall supporting at above-mentioned tensile force of belt, described embedded steel plate 1 adopts the high ductility steel of low-yield or the high ductility steel of high strength; Described embedded steel plate 1 adopts welding with described bracket 3; Described embedded steel plate 1 is divided into two kinds with vertical edge member 6, horizontal edge member 7, and the first and edge member all weld, and it two is to be connected with edge member bolt; Described pulling force supports 2 one end and is connected with bracket 3, one end be connected otic placode 4 and connect; Described pulling force support 2, described bracket 3, described connection otic placode 4 and described L shaped junction plate 5 are arranged in described embedded steel plate 1 bilateral symmetry; Described vertical edge member 6 is being connected by L shaped junction plate 5 bolts with described horizontal edge member 7; Described connection otic placode 4 is arranged symmetrically with at described Vierendeel girder 8 positions, the edge of a wing, and welds with Vierendeel girder 8; Described horizontal edge member 7 welds with described Vierendeel girder 8 or bolt is connected.Described Vierendeel girder 8 welds with described frame column 9 or bolt is connected or bolt is soldered connects.
The out of plane stiffness of the steel plate shear force wall that above-mentioned tensile force of belt supports is very large, can effectively control transportation, installs and use the deformity out of plane in engineering, keeps the firm safety of steel plate.
The steel plate shear force wall that the tensile force of belt that the present invention proposes supports is the improvement to traditional plain plate shear wall, prestressed structure is applied wherein, adopt control mode initiatively to control the flat lateral stability of steel plate, improve the defect of the easy flexing of conventional steel plates shear wall, improved steel plate and set up the lateral resistant ability of wall.All members of the present invention can be processed and install in factory, are then transported to building site and assemble, and use manpower and material resources sparingly, and reduce cost.