CN111851752A - Low-damage self-resetting shear wall and horizontal component connecting node - Google Patents
Low-damage self-resetting shear wall and horizontal component connecting node Download PDFInfo
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- CN111851752A CN111851752A CN202010696046.7A CN202010696046A CN111851752A CN 111851752 A CN111851752 A CN 111851752A CN 202010696046 A CN202010696046 A CN 202010696046A CN 111851752 A CN111851752 A CN 111851752A
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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
- E04B1/38—Connections for building structures in general
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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
- E04B1/62—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
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- 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
Abstract
The invention relates to a low-damage self-resetting shear wall and a connecting node of a horizontal member, wherein the horizontal member is rectangular and is provided with a groove on the outer side; the steel connecting piece comprises an upper angle steel, a lower angle steel and a connecting rod; firstly, fixing a horizontal component and a steel connecting piece; secondly, fixing the steel connecting piece and the self-resetting shear wall; finally, filling is carried out; in order to prevent the friction of the end part from influencing relative deformation, and to adapt to vertical deformation and facilitate construction and installation, flexible filling such as plastic foam is arranged in the gap; the self-resetting shear wall loosens the rotation constraint and the vertical deformation between the self-resetting shear wall and the horizontal member through a reasonable isolation design, but has enough rigidity and limited loosening degree, so that the self-resetting shear wall has the characteristics of stronger integrity and low damage.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a low-damage self-resetting shear wall and horizontal member connecting node.
Background
In recent years, recoverable functional structures become hot research in the fields of structural engineering and seismic engineering, and compared with the traditional structures, the recoverable functional structures have the characteristics of small damage to main body structures after an earthquake, small residual displacement, replaceable damaged parts and the like. The self-resetting shear wall structure is one of recoverable functional structures, a large number of tests and theoretical researches are carried out at home and abroad, a mature structure system is formed, and relevant practical engineering applications are carried out at home and abroad.
The self-resetting shear wall structure generally consists of a self-resetting wall body bearing the action of a horizontal earthquake and a frame beam column bearing the action of vertical gravity, and the self-resetting shear wall is used as a lateral force resisting member to ensure that the self-resetting shear wall has only compression capacity and no tension capacity at a contact surface by loosening the restraint between wall sheets and between a wall and a foundation. Under the action of earthquake, the joint at the bottom of the self-resetting wall body can be opened and provides restoring force through self gravity, prestressed steel bars and the like, so that the self-resetting wall body has larger deformation capacity and smaller residual displacement. Compared with the traditional shear wall fixedly connected with the bottom, the self-resetting shear wall has the advantages that after an earthquake, the traditional shear wall is often required to be dismantled due to irreparable damages such as steel bar buckling and concrete peeling, the damage of the wall bottom is effectively controlled, and the restorable function can be realized, as shown in fig. 1.
At present, the self-resetting shear wall structure is concerned by researchers due to excellent anti-seismic performance, the section design method and the anti-seismic performance of the wall body are developed and mature, and a few practical engineering applications exist at present. However, the problems of interaction between the self-resetting shear wall and adjacent components, node construction, and some construction techniques remain to be solved as main or all lateral force resisting components of the overall structure. Two large self-resetting wall structural system tests were conducted over the last decade: in the DSDM test of the san Diego university of California in 2009 and the Japanese E-Defense test in 2010, severe damage to the wallboard joints was observed. Analysis results show that the self-resetting wall can generate rotary deformation and vertical relative displacement at the joint of the wall body and the floor slab due to the opening and closing of the self-resetting wall along the bottom joint under the action of an earthquake. If a traditional fixed connection mode is adopted, as shown in fig. 2, the floor is forced to deform along with the self-resetting wall under the action of an earthquake, counterforce for restraining relative deformation can be generated at a connection joint, once the counterforce exceeds a material limit value, the floor can generate a large amount of cracks or even damage at the connection joint, horizontal earthquake force is transmitted to the self-resetting wall by the floor, the restraint effect of the joint can also prevent the wall from swinging, and therefore the earthquake-resistant performance of the whole structure is influenced.
It can be seen that in the novel structure system of the self-resetting shear wall structure, the interaction between the self-resetting wall and the floor is the basis for comprehensively measuring the anti-seismic performance of the self-resetting wall and the whole structure, and the connection mode between the self-resetting wall and the floor is a key factor influencing the anti-seismic performance of the structure. Therefore, it is highly desirable to provide a novel low-damage self-resetting wall-horizontal member connection mode, which can adapt to the deformation incompatibility between the self-resetting wall body and the floor slab, can transmit the horizontal earthquake action, and reduce the damage degree of the floor slab and the self-resetting wall at the connection position.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a low-damage self-resetting shear wall and a connecting node of a horizontal member, and can meet the deformation requirement of a structure under the action of an earthquake and transfer horizontal shear.
In order to solve the technical problem, the invention is realized as follows:
a low-damage self-resetting shear wall and horizontal component connection node is characterized in that: the self-resetting shear wall comprises a self-resetting shear wall, a horizontal component and a steel connecting piece;
a groove is formed in the outer side of the horizontal component in the vertical full length mode;
the steel connecting piece comprises an upper angle steel, a lower angle steel and a connecting rod connected between the folding lines of the upper angle steel and the lower angle steel, and two ends of the connecting rod respectively contract inwards to form an arc shape;
Firstly, fixing a horizontal component and a steel connecting piece; the horizontal component is transversely arranged between the flat plates of the upper angle steel and the lower angle steel, the connecting rod is just embedded into the groove on the outer side of the horizontal component and the groove is meshed with the middle part of the connecting rod, and the width of the groove is adapted to the maximum width of the middle part of the connecting rod; the distance between the upper angle steel and the lower angle steel of the steel connecting piece is larger than the thickness of the floor slab so as to adapt to vertical deformation and facilitate construction and installation;
two ends of two flat plates at the contact surfaces of the upper angle steel and the lower angle steel with the horizontal component are respectively lifted to the inner sides of the two flat plates to form an arc shape;
secondly, fixing the steel connecting piece and the self-resetting shear wall; the two vertical plates and the connecting rod of the upper angle steel and the lower angle steel of the steel connecting piece are both attached to one side of the self-resetting shear wall and connected through a bolt structure;
finally, filling is carried out; gaps are reserved between the flat plates of the upper angle steel and the lower angle steel and the occlusion end parts of the horizontal members to prevent the friction influence of the end parts from relative deformation, and in order to adapt to vertical deformation and facilitate construction and installation, flexible filling such as plastic foam is arranged in the gaps;
in the swinging process of the self-resetting shear wall, the steel connecting piece moves along with the wall body, but is relaxed and restrained with the horizontal component, the gap between the upper part and the lower part of the steel connecting piece and the horizontal component can meet the requirement of vertical relative displacement between the self-resetting shear wall and the horizontal component, the radian design of the contact surface of the steel connecting piece and the horizontal component can meet the requirement of rotational deformation between the self-resetting shear wall and the horizontal component, and the horizontal seismic force is transmitted to the steel connecting piece through the meshing part and then transmitted to the self-resetting shear wall.
The low-damage self-resetting shear wall and horizontal component connecting node is characterized in that: the bolt structure include steel backing plate, screw rod and nut, the opposite side from the shear force wall that restores to the throne is located to the steel backing plate, the riser of angle steel and lower angle steel, from the shear force wall that restores to the throne and steel backing plate are passed respectively to the screw rod, the both ends of screw rod are fixed through the nut respectively, the wholeness of bolt structure reinforcing connection reduces the effect of local pressure stress.
The low-damage self-resetting shear wall and horizontal component connecting node is characterized in that: the upper angle steel, the lower angle steel and the connecting rod are connected together by welding or are prefabricated and molded at one time;
the low-damage self-resetting shear wall and horizontal component connecting node is characterized in that: the maximum width of the middle part of the connecting rod is determined according to the shear force value, steel strength and the like required to be transmitted to the self-resetting shear wall by the horizontal member under the action of an earthquake, and the radians of the two ends of the connecting rod are determined according to the thickness of the horizontal member and the maximum expected rotation angle of the self-resetting shear wall.
The low-damage self-resetting shear wall and horizontal component connecting node is characterized in that: the lifting degree and radian of two flat plates at the contact surface of the upper angle steel, the lower angle steel and the horizontal member are determined according to the maximum expected rotation angle of the self-resetting shear wall of an applied structure, the expected rotation angle of the self-resetting shear wall is generally 2% so as to realize deformation coordination between the self-resetting shear wall and the horizontal member, the width of the groove is adapted to the maximum width of the middle part of the connecting rod of the steel connecting piece so as to ensure that the shear force can be transmitted, and the width of the middle part of the steel connecting piece is designed according to the seismic shear force required to be transmitted by a floor slab.
The low-damage self-resetting shear wall and horizontal component connecting node is characterized in that: the thickness and the plane size of the steel backing plate and the size of the screw are determined according to the shearing force and the material strength of the self-resetting shear wall on the screw under the action of an earthquake.
The low-damage self-resetting shear wall and horizontal component connecting node is characterized in that: the gap is determined according to the vertical deformation required by the corresponding connection part when the self-resetting shear wall generates the maximum rotation deformation.
The low-damage self-resetting shear wall and horizontal component connecting node is characterized in that: when the horizontal member is prepared in a factory or a construction site, reinforcing bars are reinforced around the position of the reserved groove and cut off at the corresponding position, plastic foam and other objects are used for temporarily filling, concrete is poured along with the reinforcing bars, and the fillers are removed after maintenance and molding to form the groove.
The low-damage self-resetting shear wall and horizontal component connecting node is characterized in that: the horizontal member is a floor slab or a frame beam.
The low-damage self-resetting shear wall and horizontal component connecting node is characterized in that: the floor is a concrete floor, and frame columns are arranged on two sides of the frame beam respectively.
The invention has the beneficial effects that: (1) the horizontal component can adapt to the lifting and rotation of the self-resetting wall along the bottom outside the plane, and the horizontal component and the self-resetting wall can generate relative displacement, so that the requirement of incongruity of deformation is met, and the damage to the horizontal component is reduced;
(2) the horizontal component has enough rigidity in the plane and can transmit horizontal shearing force under the action of earthquake;
(3) the influence of the horizontal component on the swinging of the self-resetting wall body is reduced, and the overall connection can realize low damage;
(4) the structure is simple, the materials are convenient to obtain, and the assembly construction is convenient.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a schematic diagram illustrating a comparison of deformation modes of a conventional shear wall and a self-resetting shear wall;
FIG. 2 is a schematic diagram of a floor slab deformation mode in which a self-resetting shear wall structure wall and a floor slab node are fixedly connected;
FIG. 3 is a schematic view of the assembly of the main components of the self-resetting shear wall structure wall and floor slab node of the present invention;
FIG. 3-1 is an overall view of a floor slab with a groove reserved according to the present invention;
FIG. 3-2 is an overall schematic view of the steel connector of the present invention;
FIG. 4 is a schematic front view of the steel connecting member of the present invention engaged with a floor slab;
FIG. 4-1 is a schematic front view of the rotation of the steel connecting member of the present invention after engagement with a floor slab;
FIG. 4-2 is a schematic view of a deformation mode of a floor slab of a self-resetting shear wall structure wall-slab joint adopting the connection mode of the invention;
fig. 5 is a schematic side view of a self-resetting shear wall structure wall and a floor slab node after assembly in embodiment 1 of the invention;
fig. 6 is a schematic top view of an arrangement of a self-resetting shear wall structure wall and a frame beam according to embodiment 2 of the present invention.
Reference numerals: the self-resetting shear wall comprises a self-resetting shear wall 1, a floor slab 2, grooves 2-1, steel connecting pieces 3, upper angle steel 3-1, lower angle steel 3-2, connecting rods 3-3, a steel base plate 4, a screw rod 5, a nut 6, a gap 7, a frame column 8 and a frame beam 9.
Detailed Description
The self-resetting shear wall structure generally consists of a self-resetting shear wall for bearing the horizontal earthquake action and a frame part for bearing the vertical action; the self-resetting shear wall can be arranged between the two frame columns in an embedded mode and is connected through hinged beams or dampers at two ends; in addition, the self-resetting shear wall can also be arranged outside the frame part in an externally hung mode, and can be used for newly building a structure and reinforcing an existing structure.
The invention is applicable to different forms of structural arrangements and will be described below with reference to two embodiments.
Example 1:
in this embodiment, the horizontal member is the floor slab 2, and when the self-resetting shear wall is arranged in an embedded manner, the self-resetting shear wall is adjacent to the floor slab, and deformation is inconsistent.
As shown in fig. 1-5: a low-damage self-resetting shear wall and horizontal component connecting node comprises a self-resetting shear wall 1, a floor slab 2 and a steel connecting piece 3;
the floor slab 2 is rectangular, and a groove 2-1 is formed in the vertical full length of the outer side of one long side;
as shown in fig. 3-2: the steel connecting piece 3 comprises an upper angle steel 3-1, a lower angle steel 3-2 and a connecting rod 3-3 connected between the folding lines of the upper angle steel and the lower angle steel, and two ends of the connecting rod 3-3 are respectively contracted inwards to form an arc shape;
firstly, fixing a floor slab 2 and a steel connecting piece 3; the floor slab 2 is transversely arranged between flat plates of upper angle steel 3-1 and lower angle steel 3-2, at the moment, the connecting rod 3-3 is just embedded in the groove 2-1 on the outer side of the floor slab 2, the groove 2-1 is meshed with the middle part of the connecting rod 3-3, and the width of the groove 2-1 is adapted to the maximum width of the middle part of the connecting rod 3-3; the distance Ws between the angle steel 3-1 and the angle steel 3-2 on the steel connecting piece is slightly larger than the thickness W of the floor slab so as to adapt to vertical deformation and facilitate construction and installation;
two ends of two flat plates at the contact surfaces of the upper angle steel 3-1 and the lower angle steel 3-2 and the floor slab 2 are respectively lifted to the inner sides of the two flat plates to form an arc shape;
secondly, fixing the steel connecting piece 3 and the self-resetting shear wall 1; the steel connecting piece 3 provided with the floor slab 2 is characterized in that two vertical plates and connecting rods 3-3 of upper angle steel 3-1 and lower angle steel 3-2 are both attached to one side of the self-resetting shear wall 1 and connected through a bolt structure;
Finally, filling is carried out; gaps 7 are reserved between the flat plates of the upper angle steel 3-1 and the lower angle steel 3-2 and the occluded end parts of the floor slabs 2 to prevent the friction of the end parts from influencing relative deformation, and in order to adapt to vertical deformation and facilitate construction and installation, flexible filling such as plastic foam is arranged in the gaps;
furthermore, the bolt structure comprises a steel base plate 4, a screw rod 5 and a nut 6, the steel base plate 4 is arranged on the other side of the self-resetting shear wall 1, the screw rod 5 penetrates through a vertical plate of the upper angle steel 3-1 and the lower angle steel 3-2, the self-resetting shear wall 1 and the steel base plate respectively, two ends of the screw rod 5 are fixed through the nut 6 respectively, the bolt structure enhances the connection integrity, and the action of local pressure stress is reduced;
further, the floor 2 is a concrete floor;
furthermore, the upper angle steel 3-1, the lower angle steel 3-2 and the connecting rod 3-3 are connected together by welding or are prefabricated and molded at one time;
further, the maximum width of the middle part of the connecting rod 3-3 is determined according to the shear force value, the steel strength and the like required to be transmitted to the self-resetting shear wall 1 by the floor slab 2 under the action of an earthquake, and the radians of the two ends of the connecting rod 3-3 are determined according to the thickness of the floor slab 2 and the maximum expected rotation angle of the self-resetting shear wall 1;
Further, the lifting degree and radian of two flat plates at the contact surface of the upper angle steel 3-1 and the lower angle steel 3-2 and the floor slab 2 are determined according to the maximum expected rotation angle of the self-resetting shear wall 1 of the applied structure (the expected rotation angle of the self-resetting shear wall 1 is generally 2%) so as to realize deformation coordination between the self-resetting shear wall 1 and the floor slab 2, the groove width D1 is adapted to the maximum width Dmax of the middle part of the connecting rod 3-3 of the steel connecting piece 3 so as to ensure that the shear force can be transmitted, and the width of the middle part of the steel connecting piece is designed according to the earthquake shear force required to be transmitted by the floor slab.
Further, the thickness and the plane size of the steel base plate 4 and the size of the screw 5 are determined according to the shearing force and the material strength generated by the self-resetting shear wall 1 to the screw 5 under the action of an earthquake.
Further, the gap 7 is determined according to the vertical deformation required by the corresponding connection part when the self-resetting shear wall 1 generates the maximum rotation deformation.
Further, when the floor slab 2 is prepared in a factory or a construction site, reinforcing bars are reinforced around the positions of the reserved grooves and cut off at corresponding positions, plastic foam and the like are used for temporarily filling, concrete is poured, and the fillers are removed after curing and forming to form the grooves 2-1, as shown in fig. 3-1.
The mechanism of the invention is as follows:
under the action of an earthquake, the self-resetting shear wall 1 is used as a lateral force resisting component to lift and swing along a bottom joint, so that earthquake energy is resisted and consumed; meanwhile, the floor slab 2 needs to transmit the horizontal earthquake shearing force to the self-resetting shear wall 1. In the process of swinging the self-resetting shear wall 1, relative displacement is generated between the wall body and the floor slab 2; if the traditional fixing mode is adopted, as shown in fig. 2, although the bottom of the wall body is relaxed, the wall-plate connection part is still relatively fixed, the deformation between the self-resetting shear wall 1 and the floor slab 2 is inconsistent, the floor slab is seriously damaged, the rigidity of the connection part is weakened, and the transmission of horizontal force is influenced;
in contrast, by adopting the isolated connection, as shown in fig. 4-1 and 4-2, in the process of swinging the self-resetting shear wall 1, the steel connecting piece 3 moves along with the wall body, but looses the constraint with the floor slab 2, the gap between the upper part and the lower part of the steel connecting piece 3 and the floor slab 2 can meet the requirement of vertical relative displacement between the wall and the plate, the radian alpha of the contact surface of the steel connecting piece 3 and the floor slab 2 can meet the requirement of rotational deformation between the wall and the plate, and the horizontal seismic force is transmitted to the steel connecting piece 3 through the meshing part and then transmitted to the self-resetting shear wall 1. The overall design realizes low damage through 'the soft gram steel'; the vertical and rotational freedom degrees of connection between the wall and the plate are released, synchronous deformation of the wall-plate connection part and the joint at the bottom of the self-resetting shear wall 1 is realized, the rigidity in the plane of the floor slab 2 is ensured, the damage degree of the floor slab 2 is greatly reduced, the influence of the constraint counter force of the wall-plate connection part on the performance of the self-resetting shear wall 1 is reduced, and the anti-seismic performance of the whole structure is enhanced.
According to the wall-plate connecting node in the self-resetting shear wall structure, the rotation constraint and the vertical deformation between the self-resetting shear wall 1 and the floor slab 2 are relaxed through a reasonable isolation design, but the wall-plate connecting node has enough rigidity and limited relaxation degree, so that the wall-plate connecting node has the characteristics of strong integrity and low damage.
The connecting node of the self-resetting shear wall structure wall and the horizontal member is not limited to be applied to a newly-built self-resetting shear wall structure, and can also be applied to similar recoverable functional structures and reinforcement of existing structures.
Example 2:
as shown in fig. 6: in this embodiment, the horizontal member is a frame beam 9, and two sides of the frame beam 9 are respectively provided with a frame column 8; when the self-resetting shear wall 1 is arranged in an externally-hanging mode or used for reinforcing an existing structure, deformation incompatibility exists between the self-resetting shear wall and the frame beam 9 at the corresponding floor position and between the self-resetting shear wall and the frame beam 9.
The middle part of the steel connecting piece 3 is mutually occluded with the frame beam 9 reserved with the groove, the distance between the upper angle steel and the lower angle steel is slightly larger than the height of the frame beam 9, and the vertical degree of freedom and the rotational degree of freedom of the frame beam are loosened through corresponding radian design. The working mechanism and the construction and installation method of the embodiment are the same as those of the embodiment 1.
Claims (10)
1. A low-damage self-resetting shear wall and horizontal component connection node is characterized in that: the self-resetting shear wall comprises a self-resetting shear wall (1), a horizontal component and a steel connecting piece (3);
a groove (2-1) is formed in the vertical full length of the outer side of the horizontal component;
the steel connecting piece (3) comprises an upper angle steel (3-1), a lower angle steel (3-2) and a connecting rod (3-3) connected between the folding lines of the upper angle steel and the lower angle steel, and two ends of the connecting rod (3-3) respectively contract inwards to form an arc shape;
firstly, fixing a horizontal component and a steel connecting piece (3); the horizontal component is transversely arranged between flat plates of the upper angle steel (3-1) and the lower angle steel (3-2), the connecting rod (3-3) is just embedded into the groove (2-1) on the outer side of the horizontal component, the groove (2-1) is meshed with the middle part of the connecting rod (3-3), and the width of the groove (2-1) is adapted to the maximum width of the middle part of the connecting rod (3-3); the distance between the upper angle steel (3-1) and the lower angle steel (3-2) of the steel connecting piece is larger than the thickness of the floor slab so as to adapt to vertical deformation and facilitate construction and installation;
two ends of two flat plates at the contact surfaces of the upper angle steel (3-1) and the lower angle steel (3-2) and the horizontal component are respectively lifted to the inner sides of the two flat plates to form an arc shape;
secondly, fixing the steel connecting piece (3) and the self-resetting shear wall (1); the two vertical plates and the connecting rods (3-3) of the upper angle steel (3-1) and the lower angle steel (3-2) of the steel connecting piece (3) are both attached to one side of the self-resetting shear wall (1) and connected through a bolt structure;
Finally, filling is carried out; gaps (7) are reserved between the flat plates of the upper angle steel (3-1) and the lower angle steel (3-2) and the occlusion end parts of the horizontal members, so that the relative deformation caused by the friction of the end parts is prevented, and in order to adapt to vertical deformation and facilitate construction and installation, flexible filling such as plastic foam is arranged in the gaps;
in the swinging process of the self-resetting shear wall (1), the steel connecting piece (3) moves along with the wall body, but looses constraint with the horizontal component, the gap between the upper part and the lower part of the steel connecting piece (3) and the horizontal component can meet the requirement of vertical relative displacement between the self-resetting shear wall (1) and the horizontal component, the radian design of the contact surface of the steel connecting piece (3) and the horizontal component can meet the requirement of rotation deformation between the self-resetting shear wall and the horizontal component, and horizontal seismic force is transmitted to the steel connecting piece (3) through the meshing part and then transmitted to the self-resetting shear wall (1).
2. The low damage self-resetting shear wall and horizontal member connection node of claim 1, wherein: bolt structure include backing steel plate (4), screw rod (5) and nut (6), backing steel plate (4) are located from the opposite side of restoring to the throne shear force wall (1), screw rod (5) pass the riser of last angle steel (3-1) and lower angle steel (3-2) respectively, from restoring to the throne shear force wall (1) and backing steel plate, the both ends of screw rod (5) are fixed through nut (6) respectively, the wholeness of bolt structure reinforcing connection reduces the effect of local compressive stress.
3. The low damage self-resetting shear wall and horizontal member connection node of claim 1, wherein: the upper angle steel (3-1), the lower angle steel (3-2) and the connecting rod (3-3) are connected together by welding or are prefabricated and molded at one time.
4. The low damage self-resetting shear wall and horizontal member connection node of claim 1, wherein: the maximum width of the middle part of the connecting rod (3-3) is determined according to the shear force value, the steel strength and the like required to be transmitted to the self-resetting shear wall (1) by the horizontal member under the action of an earthquake, and the radians of the two ends of the connecting rod (3-3) are determined according to the thickness of the horizontal member and the maximum expected rotation angle of the self-resetting shear wall (1).
5. The low damage self-resetting shear wall and horizontal member connection node of claim 1, wherein: the lifting degree and radian of two flat plate ends at the contact surfaces of the upper angle steel (3-1) and the lower angle steel (3-2) and the horizontal member are determined according to the maximum expected rotation angle of the self-resetting shear wall (1) of an applied structure, the expected rotation angle of the self-resetting shear wall (1) is generally 2% so as to realize deformation coordination between the self-resetting shear wall (1) and the horizontal member, the width of a groove is adapted to the maximum width of the middle part of a connecting rod (3-3) of the steel connecting piece (3) so as to ensure that shear force can be transmitted, and the width of the middle part of the steel connecting piece is designed according to the seismic shear force required by a floor slab to be transmitted.
6. The low damage self-resetting shear wall and horizontal member connection node of claim 1, wherein: the thickness and the plane size of the steel base plate (4) and the size of the screw (5) are determined according to the shearing force and the material strength of the self-resetting shear wall (1) to the screw (5) under the action of an earthquake.
7. The low damage self-resetting shear wall and horizontal member connection node of claim 1, wherein: the gap (7) is determined according to the vertical deformation required by the corresponding connection part when the self-resetting shear wall (1) generates the maximum rotation deformation.
8. The low damage self-resetting shear wall and horizontal member connection node of claim 1, wherein: when the horizontal member is prepared in a factory or a construction site, reinforcing bars are reinforced around the position of the reserved groove and cut off at the corresponding position, plastic foam and other objects are used for temporarily filling, concrete is poured along with the reinforcing bars, and the fillers are removed after maintenance and molding to form the groove (2-1).
9. The low damage self-resetting shear wall and horizontal member connection node of any one of claims 1-8, wherein: the horizontal component is a floor (2) or a frame beam (9).
10. The low damage self-resetting shear wall and horizontal member connection node of claim 9, wherein: the floor (2) is a concrete floor, and frame columns (8) are arranged on two sides of the frame beam (9) respectively.
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| CN113818594A (en) * | 2021-09-18 | 2021-12-21 | 同济大学 | Assembling method of low-damage self-resetting shear wall structure |
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| CN202148600U (en) * | 2011-07-13 | 2012-02-22 | 宝钢钢构有限公司 | Large cast steel panel joint |
| CN105297936A (en) * | 2015-10-27 | 2016-02-03 | 同济大学 | Beam and slab connecting structure for self-restoring structures |
| CN110318469A (en) * | 2019-07-17 | 2019-10-11 | 河南城建学院 | Fabricated construction connector |
| WO2020073111A1 (en) * | 2018-10-10 | 2020-04-16 | Tomo Bonac | Building system with interior insulation |
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| US4429505A (en) * | 1980-09-11 | 1984-02-07 | Artur Fischer | Fixing device for fastening objects on hollow boards |
| CN202039474U (en) * | 2011-03-30 | 2011-11-16 | 同济大学 | Energy dissipation shearing wall with restrained concrete slab and low-yield-point steel plate |
| CN202148600U (en) * | 2011-07-13 | 2012-02-22 | 宝钢钢构有限公司 | Large cast steel panel joint |
| CN105297936A (en) * | 2015-10-27 | 2016-02-03 | 同济大学 | Beam and slab connecting structure for self-restoring structures |
| WO2020073111A1 (en) * | 2018-10-10 | 2020-04-16 | Tomo Bonac | Building system with interior insulation |
| CN110318469A (en) * | 2019-07-17 | 2019-10-11 | 河南城建学院 | Fabricated construction connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113818594A (en) * | 2021-09-18 | 2021-12-21 | 同济大学 | Assembling method of low-damage self-resetting shear wall structure |
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