CN108086516B - Axillary bracing type bearing energy dissipation brace and construction method thereof - Google Patents
Axillary bracing type bearing energy dissipation brace and construction method thereof Download PDFInfo
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- CN108086516B CN108086516B CN201810078982.4A CN201810078982A CN108086516B CN 108086516 B CN108086516 B CN 108086516B CN 201810078982 A CN201810078982 A CN 201810078982A CN 108086516 B CN108086516 B CN 108086516B
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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
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Abstract
The utility model provides an armpit support formula bears power consumption support and construction method thereof, bear power consumption support includes shear support steel sheet, power consumption strip steel sheet and out-of-plane constraint steel sheet cover, shear support steel sheet includes diaphragm and riser, the upper end and the diaphragm of power consumption strip steel sheet are fixed, the lower extreme and the riser of power consumption strip steel sheet are fixed, the middle part of out-of-plane constraint steel sheet cover is provided with the cavity space, power consumption strip steel sheet inserts in this cavity space, out-of-plane constraint steel sheet cover top end face and diaphragm's downside surface remain an power consumption displacement clearance in advance. The invention consumes energy on one hand and prevents the beam from falling off on the other hand, and when the prestress rib in the beam fails, the shearing force transmitted from the beam can be borne by the shearing support plate, so that a second defense line is provided for the structure. One support or a plurality of supports can be used at one beam column node, and the plurality of supports can be regarded as a parallel system when working together. The support is convenient and rapid to replace after earthquake, and good post-earthquake recoverability is provided.
Description
Technical Field
The invention belongs to the technical field of structural engineering damping, and particularly relates to a damping device for enhancing the shearing resistance of beam column joints of an assembled structure and a construction method thereof.
Background
The building industrialization is an important concept in the field of buildings in China in recent years, wherein the building structure assembled by adopting prestress has the characteristics of high construction speed, controllable quality and the like, and has wide prospect. However, the bottleneck of the existing constraint prestress assembly building is that the beam and plate members bear vertical loads only by virtue of friction force generated by prestress on the beam-column interface, the defense line is single, and the reliability is poor. Meanwhile, a nonlinear elastic response occurs on a connecting interface only by a structural system formed by prestress tensioning, and the self-resetting capability is strong but the energy consumption capability is poor. Under the action of earthquake, the overall stability and the capacity of dissipating earthquake energy have larger differences from the requirements.
In the last century, china has carried out an assembled structure, and the beams and columns of the structure are connected by prestress tendons. However, the prestress rib assembled structure has low energy consumption capability under the action of earthquake, only small earthquake energy can be consumed through the deformation of the structure, and the structure has low capability of bearing the earthquake without larger damage. Meanwhile, the plastic hinge is easy to appear at the beam end under the action of earthquake due to the small contact surface, so that the concrete at the beam end is crushed prematurely, and the concrete is in danger of falling after being crushed, thereby causing economic loss and casualties.
Disclosure of Invention
The invention aims to provide an axillary bracing type bearing energy consumption support and a construction method thereof, which aim to solve the technical problems that the existing prestressed rib connecting beam column has lower energy consumption capability under the action of an earthquake and the prestressed rib breaks to cause early crushing of concrete, so that the beam falls to finally cause economic loss and casualties.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an axillary bracing type bearing energy dissipation brace is fixedly connected at the axilla of a connecting node of a structural column and a structural beam and comprises a shearing support steel plate, an energy dissipation strip steel plate and an out-of-plane constraint steel plate sleeve,
the shear supporting steel plate is centrally arranged along the width direction of the structural beam at the axilla of the connecting node and parallel to the plane where the connecting node is located, the shear supporting steel plate comprises a transverse plate and a vertical plate, the upper side surface of the transverse plate is tightly attached to the lower side surface of the structural beam and fixedly connected with the lower side surface through a first connecting piece, the outer side surface of the vertical plate is tightly attached to the inner side surface of the structural column and fixedly connected with the inner side surface through a second connecting piece,
the energy dissipation strip steel plates are obliquely arranged at the armpits of the connecting joints, the upper end faces of the energy dissipation strip steel plates are tightly attached and fixedly connected to the lower side surfaces of the transverse plates, the lower end faces of the energy dissipation strip steel plates are tightly attached and fixedly connected to the inner side surfaces of the vertical plates,
the energy consumption strip steel plate is provided with energy consumption sections with inward shrinking dimensions,
the middle part of the out-of-plane constraint steel plate sleeve is provided with a cavity space for accommodating the energy consumption strip steel plate along the oblique setting direction of the energy consumption strip steel plate, the energy consumption strip steel plate is inserted into the cavity space, the size of the cavity space is used for ensuring that gaps are reserved between four side surfaces of the energy consumption strip steel plate and four side surfaces of the cavity space,
the longitudinal side section of the out-of-plane constraint steel plate sleeve is trapezoid, the size of the out-of-plane constraint steel plate sleeve along the oblique setting direction of the energy dissipation strip steel plate is smaller than that of the energy dissipation strip steel plate, the bottom end face of the out-of-plane constraint steel plate sleeve is parallel to the vertical plate and tightly props against the inner side surface of the vertical plate, and the top end face of the out-of-plane constraint steel plate sleeve is parallel to the transverse plate and is reserved with an energy dissipation displacement gap on the lower side surface of the transverse plate.
The out-of-plane constraint steel plate sleeve is formed by fixedly connecting two side plates which are identical in outer contour and are oppositely clamped on two sides of the energy consumption strip steel plate, the middle part of the inner side surface of each side plate is provided with a concave along the oblique setting direction of the energy consumption strip steel plate, the concave enables the side plates to be groove plates, each groove plate comprises a groove side plate and a groove bottom plate, the groove side plates on two sides are attached, and a cavity space is formed by the concave between the groove bottom plates on two sides.
The energy dissipation strip steel plate is integrally in a dog-bone shape and is obliquely arranged at 45 degrees, and consists of an energy dissipation section in the middle, elastic constraint sections at two ends and elastic connection sections of the small-to-large concave arc smooth transition energy dissipation section and the elastic constraint sections.
The shearing support steel plate is two straight plates or integrally formed angle plates.
The ledge plates on the two sides are fixedly connected into a whole through connecting bolts or welding.
The bottom end face of the out-of-plane constraint steel plate sleeve is welded and fixed with the inner side surface of the vertical plate.
The limit displacement of the axillary support type bearing energy consumption support is not larger than the allowable maximum displacement of the energy consumption displacement gap.
An axillary bracing type bearing energy dissipation support is arranged at the axillary part of the joint, the first connecting piece is provided with two rows which are respectively positioned at two sides of the out-of-plane constraint steel plate sleeve, the second connecting piece is also provided with two rows which are respectively positioned at two sides of the out-of-plane constraint steel plate sleeve,
or the armpit of the joint is provided with at least two armpit support type bearing energy dissipation supports in parallel, the first connecting piece is provided with two rows which are respectively positioned at the outermost two sides of all the out-of-plane constraint steel plate sleeves, and the second connecting piece is also provided with two rows which are respectively positioned at the outermost two sides of all the out-of-plane constraint steel plate sleeves.
The first connecting piece and the second connecting piece are all bolts, and bolt holes are formed in the corresponding transverse plates and the corresponding vertical plates.
The construction method of the axillary bracing type bearing energy dissipation brace comprises the following construction steps:
step one, designing the size and the number of axillary support type bearing energy consumption supports required to be arranged at the axillary positions of the connecting nodes according to calculation;
step two, processing a shear supporting steel plate, an energy consumption strip steel plate and an out-of-plane constraint steel plate sleeve in a factory;
inserting the energy consumption strip steel plate into the cavity space, and sleeving the out-of-plane constraint steel plate on the outer side of the energy consumption strip steel plate;
welding the top end surface of the energy consumption strip steel plate with the lower side of the transverse plate, welding the bottom end surface of the energy consumption strip steel plate with the inner side of the vertical plate, and propping the out-of-plane constraint steel plate sleeve against the inner side of the vertical plate under the action of gravity or welding the out-of-plane constraint steel plate sleeve with the inner side of the vertical plate to prevent position deviation; the energy consumption displacement gap is exposed between the out-of-plane constraint steel plate sleeve and the transverse plate;
fifthly, transporting the manufactured axillary bracing type bearing energy consumption brace to a construction site;
and step six, fixedly connecting the transverse plate to the bottom of the structural beam through a first connecting piece, and fixedly connecting the vertical plate to the inner side part of the structural column through a second connecting piece.
The construction method of the axillary bracing type bearing energy dissipation brace comprises the following construction steps:
step one, designing the size and the number of axillary support type bearing energy consumption supports required to be arranged at the axillary positions of the connecting nodes according to calculation;
step two, processing a shear supporting steel plate, an energy consumption strip steel plate and an out-of-plane constraint steel plate sleeve in a factory; processing the out-of-plane constraint steel plate sleeve into two side plates, and processing the side plates into groove plates;
thirdly, welding the top end face of the energy consumption strip steel plate with the lower side of the transverse plate, and welding the bottom end face of the energy consumption strip steel plate with the inner side of the vertical plate;
step four, respectively buckling two side plates on two sides of the energy consumption strip steel plate, buckling the energy consumption strip steel plate between the tank bottom plates, and then fixedly connecting the ledge plates on two sides; the out-of-plane constraint steel plate sleeve is propped against the inner side of the vertical plate under the action of gravity, or the out-of-plane constraint steel plate sleeve is welded with the inner side of the vertical plate to prevent position deviation; the energy consumption displacement gap is exposed between the out-of-plane constraint steel plate sleeve and the transverse plate;
fifthly, transporting the manufactured axillary bracing type bearing energy consumption brace to a construction site;
and step six, fixedly connecting the transverse plate to the bottom of the structural beam through a first connecting piece, and fixedly connecting the vertical plate to the inner side part of the structural column through a second connecting piece.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
the invention discloses an axillary bracing type bearing energy consumption support, which utilizes the bearing capacity to bear vertical shearing force on one hand to form a second defense line for bearing vertical load; on the other hand, when the earthquake comes, the support enters an energy consumption state, and a large amount of earthquake energy can be dissipated, so that the structure earthquake response has a good control effect. Meanwhile, in order to avoid interference to building space, the device is additionally arranged at the armpit between the beams and the columns, so that an effective plastic hinge area with full energy consumption is formed, the calculation can be performed by adopting the existing design specification and design software when the structural design is performed, and the popularization is convenient. According to the invention, the earthquake energy of the building structure is consumed through the energy consumption support, the earthquake stress borne by the main structure is reduced, the damage of the whole structure is avoided, meanwhile, the damage of the concrete member of the main structure is reduced, the whole earthquake resistance of the structure is improved, the earthquake resistance can be conveniently replaced after earthquake, and even after small earthquake, the support does not enter plasticity and can be replaced, so that the building structure can quickly recover the function after earthquake, and the economic loss is reduced.
The energy-consuming brace adopts a metal structure, has simple mechanical characteristics, convenient design, changeable finished product form and simpler processing requirement, and extremely high initial rigidity ensures that the structure has enough rigidity to limit the deformation of the structure under the action of small shock and wind load, and smaller yield displacement ensures that the structure can be well popularized in cast-in-situ or prefabricated reinforced concrete structures. The device is small in size, light in weight and convenient to construct. The device is also suitable for earthquake-proof reinforcement of the prestress assembly type structural system.
The invention can be designed and installed in a structure as a building component; but also for seismic reinforcement of already built structures. The device utilizes beam-end corner, makes the power consumption support take place deformation, and the power consumption board produces the counter-force opposite with the direction of motion, carries out the power consumption, and then reduces the displacement of structure under the seismic action, reduces the damage of structure. A steel plate is additionally arranged on the outer side of the energy consumption plate to be used as out-of-plane constraint, so that the energy consumption plate can still stably consume energy when being pressed. The shear supporting plate provides connection of the energy consumption plates on one hand, and provides shear bearing capacity of the beam on the other hand, and when the prestress rib in the beam fails, the shear supporting plate can bear shearing force transmitted from the beam, so that a second defense line is provided for the structure. One support or a plurality of supports can be used at one beam column node, and the plurality of supports can be regarded as a parallel system when working together. The support is convenient and rapid to replace after earthquake, and good post-earthquake recoverability is provided.
The ultimate displacement of the support should not exceed the allowable maximum displacement of the dissipative displacement gap, and the stiffness of all supports used in a layer of a building can be considered as a parallel version of the stiffness of a single support. The support is in elasticity during small earthquake, and only provides the elastic mechanical properties of the support beam and the beam column joint. During medium and large earthquakes, the support should deform and enter yield to consume energy, so as to protect the main structure.
The invention is suitable for the assembled prestress structure, and can conveniently carry out reinforcement and reconstruction on the original structure. Multiple supports are typically used in the structure, and may be connected in parallel, requiring the length of the anchor holes to be calculated to accommodate the required shear force.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of a cross-section A-A in FIG. 1 according to an embodiment.
Fig. 3 is a schematic view of a partial side cross-section of an outer face constraint steel plate sleeve at the armpit of a connection node.
Fig. 4 is a schematic structural view of section B-B in fig. 3.
Fig. 5 is a schematic structural view of the C-C section in fig. 3.
Fig. 6 is a schematic structural view of the D-D section in fig. 3.
Fig. 7 is a schematic structural view of the connection of the energy dissipating strip steel plate and the shear supporting steel plate.
FIG. 8 is a schematic view of a cross-section A-A in FIG. 1 according to a second embodiment.
Fig. 9 is a schematic structural view of the side plate.
Fig. 10 is a schematic cross-sectional structure of fig. 9.
Reference numerals: the steel plate structure comprises a 1-energy consumption strip steel plate, a 11-energy consumption section, a 12-elastic constraint section, a 13-elastic connection section, a 2-out-of-plane constraint steel plate sleeve, a 21-groove side plate, a 22-groove bottom plate, a 3-shear support steel plate, a 31-transverse plate, a 32-vertical plate, a 4-cavity space, a 5-energy consumption displacement gap, a 6-bolt hole, a 7-structural column, an 8-structural beam, a 9-first connecting piece, a 10-second connecting piece and a 14-prestress rib.
Detailed Description
Embodiment-referring to fig. 1-7, a beam-column connection structure is provided in which beams are connected by tendons 14. An axillary bracing type bearing energy dissipation brace is fixedly connected at the axilla of a connecting node of a structural column 7 and a structural beam 8 and comprises a shear supporting steel plate 3, an energy dissipation strip steel plate 1 and an out-of-plane constraint steel plate sleeve 2.
The shear supporting steel plate 3 is arranged at the axilla of the connecting node and is parallel to the plane where the connecting node is located along the width direction of the structural beam 8, the shear supporting steel plate comprises a transverse plate 31 and a vertical plate 32, the upper side surface of the transverse plate 31 is clung to the lower side surface of the structural beam 8 and is fixedly connected through a first connecting piece 9, and the outer side surface of the vertical plate 32 is clung to the inner side surface of the structural column 7 and is fixedly connected through a second connecting piece 10.
The energy dissipation strip steel plate 1 is obliquely arranged at the armpit of the connecting node, the upper end face of the energy dissipation strip steel plate is tightly attached to and fixedly connected with the lower side surface of the transverse plate 31, and the lower end face of the energy dissipation strip steel plate 1 is tightly attached to and fixedly connected with the inner side surface of the vertical plate 32. In this embodiment, the cross section of the energy dissipating strip steel plate 1 is rectangular.
The dissipative strip steel sheet 1 has dissipative sections 11 with dimensions shrinking inwardly. The energy consumption strip steel plate is integrally in a dog-bone shape and is obliquely arranged at 45 degrees, and consists of an energy consumption section 11 in the middle, elastic constraint sections 12 at two ends and an elastic connecting section 13 of the small-to-large concave arc-shaped smooth transition energy consumption section 11 and the elastic constraint sections 12.
The middle part of out-of-plane constraint steel plate cover 2, along the slant setting direction general length of power consumption strip steel plate 1 have the cavity space 4 that holds the power consumption strip steel plate, power consumption strip steel plate 1 inserts in this cavity space, and the size in cavity space is in order to guarantee that all reserve the space between four sides of power consumption strip steel plate and four sides in cavity space is in order. According to the stress direction, the gaps on the upper side and the lower side are relatively narrow, and the gaps on the left side and the right side are relatively wide.
The longitudinal side section of the out-of-plane constraint steel plate sleeve 2 is trapezoid, the size of the out-of-plane constraint steel plate sleeve along the oblique setting direction of the energy consumption strip steel plate 1 is smaller than that of the energy consumption strip steel plate 1, the bottom end face of the out-of-plane constraint steel plate sleeve is parallel to the vertical plate 32 and tightly props against the inner side surface of the vertical plate 32, and the top end face of the out-of-plane constraint steel plate sleeve is parallel to the transverse plate 31 and is reserved with an energy consumption displacement gap 5 on the lower side surface of the transverse plate 31. The limit displacement of the axillary support type bearing energy dissipation support is not larger than the allowable maximum displacement of the energy dissipation displacement gap 5, and the allowable maximum displacement is that the beam end rotates to generate deformation when the frame structure is damaged, and the setting size of the gap is based on the condition that the beam cannot touch the axillary support type bearing energy dissipation support after deformation.
The out-of-plane constraint steel plate sleeve can lean against the inner side of the vertical plate under the action of gravity, and the function of energy consumption support can be finished at the moment. The out-of-plane constraint steel plate sleeve is welded with the inner side of the vertical plate, so that the position of the out-of-plane constraint steel plate sleeve can be further prevented from being deviated; therefore, in the embodiment, the bottom end surface of the out-of-plane restraint steel plate sleeve is welded and fixed with the inner side surface of the vertical plate.
The shear supporting steel plate 3 is two straight plates or integrally formed angle plates. The angle plate formed integrally in the embodiment can also adopt two straight plates according to actual conditions. Compared with the prior art, the angle plate can be used as a support, and the function of supporting the beam end is continuously generated when the beam end is damaged.
An axillary bracing type bearing energy dissipation brace is arranged at the axillary part of the joint, the first connecting piece 9 is provided with two rows which are respectively positioned at the two sides of the out-of-plane constraint steel plate sleeve 2, the second connecting piece 10 is also provided with two rows which are respectively positioned at the two sides of the out-of-plane constraint steel plate sleeve 2,
the first connecting piece 9 and the second connecting piece 10 are all bolts, and bolt holes 6 are formed in the corresponding transverse plates and the corresponding vertical plates.
The construction method of the axillary support type bearing energy dissipation support comprises the following construction steps:
step one, designing the size and the number of axillary support type bearing energy consumption supports required to be arranged at the axillary positions of the connecting nodes according to calculation;
step two, processing a shear supporting steel plate 3, an energy consumption strip steel plate 1 and an out-of-plane constraint steel plate sleeve 2 in a factory;
step three, the energy consumption strip steel plate 1 is inserted into the cavity space 4, so that the out-of-plane constraint steel plate sleeve 2 is sleeved on the outer side of the energy consumption strip steel plate 1;
welding the top end surface of the energy consumption strip steel plate 1 with the lower side of the transverse plate 31, welding the bottom end surface of the energy consumption strip steel plate 1 with the inner side of the vertical plate 32, and propping the out-of-plane constraint steel plate sleeve 2 against the inner side of the vertical plate 32 under the action of gravity or welding the out-of-plane constraint steel plate sleeve 2 with the inner side of the vertical plate 32 to prevent position deviation; an energy consumption displacement gap 5 is exposed between the out-of-plane constraint steel plate sleeve 2 and the transverse plate;
fifthly, transporting the manufactured axillary bracing type bearing energy consumption brace to a construction site;
step six, the transverse plate 31 is fixedly connected to the bottom of the structural beam through the first connecting piece 9, and the vertical plate 32 is fixedly connected to the inner side part of the structural column through the second connecting piece 10.
Embodiment two is shown in fig. 8-10, unlike embodiment one, the armpit of the joint is provided with two axillary bracing type bearing energy dissipation supports in parallel, the first connecting piece 9 is provided with two columns, which are respectively located at the two outermost sides of all out-of-plane constraint steel plate sleeves 2, and the second connecting piece 10 is also provided with two columns, which are respectively located at the two outermost sides of all out-of-plane constraint steel plate sleeves 2.
Unlike the first embodiment, the out-of-plane constraint steel plate sleeve 2 is formed by fixedly connecting two side plates with the same outer contour and oppositely clamped at two sides of the energy consumption strip steel plate 1, the transverse side section of each side plate is trapezoid, the middle part of the inner side surface of each side plate is provided with a concave along the oblique setting direction of the energy consumption strip steel plate, the concave enables the side plate to be a groove plate, the groove plate comprises a groove side plate 21 and a groove bottom plate 22, the groove side plates 21 at two sides are attached, and the concave between the groove bottom plates at two sides forms a cavity space 4. The ledge plates on the two sides are fixedly connected into a whole through connecting bolts or welding. Such an out-of-plane restraint steel sheet jacket 2 can also be applied to the first embodiment, and the corresponding construction method is also performed according to the construction method of the second embodiment.
The construction method of the axillary support type bearing energy dissipation support comprises the following construction steps:
step one, designing the size and the number of axillary support type bearing energy consumption supports required to be arranged at the axillary positions of the connecting nodes according to calculation;
step two, processing a shear supporting steel plate 3, an energy consumption strip steel plate 1 and an out-of-plane constraint steel plate sleeve 2 in a factory; processing the out-of-plane constraint steel plate sleeve into two side plates, and processing the side plates into groove plates;
step three, welding the top end surface of the energy consumption strip steel plate 1 with the lower side of the transverse plate 31, and welding the bottom end surface of the energy consumption strip steel plate 1 with the inner side of the vertical plate 32;
step four, respectively buckling two side plates on two sides of the energy consumption strip steel plate 1, buckling the energy consumption strip steel plate between the groove bottom plates 22, and then fixedly connecting the ledge plates 21 on two sides; the out-of-plane constraint steel plate sleeve 2 is propped against the inner side of the vertical plate 32 under the action of gravity, or the out-of-plane constraint steel plate sleeve 2 and the inner side of the vertical plate 32 are welded to prevent position deviation; an energy consumption displacement gap 5 is exposed between the out-of-plane constraint steel plate sleeve 2 and the transverse plate;
fifthly, transporting the manufactured axillary bracing type bearing energy consumption brace to a construction site;
step six, the transverse plate 31 is fixedly connected to the bottom of the structural beam through the first connecting piece 9, and the vertical plate 32 is fixedly connected to the inner side part of the structural column through the second connecting piece 10.
Claims (5)
1. Axillary bracing formula bears energy dissipation brace, fixed connection is in the connected node armpit department of structure post (7) and structure roof beam (8), its characterized in that: comprises a shear supporting steel plate (3), an energy consumption strip steel plate (1) and an out-of-plane constraint steel plate sleeve (2),
the shear supporting steel plate (3) is centrally arranged at the armpit of a connecting node along the width direction of the structural beam (8), the shear supporting steel plate comprises a transverse plate (31) and a vertical plate (32), the upper side surface of the transverse plate (31) is tightly attached to the lower side surface of the structural beam (8) and fixedly connected through a first connecting piece (9), the outer side surface of the vertical plate (32) is tightly attached to the inner side surface of the structural column (7) and fixedly connected through a second connecting piece (10),
the energy consumption strip steel plate (1) is obliquely arranged at the armpit of the connecting node and is parallel to the plane where the connecting node is positioned, the upper end face of the energy consumption strip steel plate is tightly attached to and fixedly connected with the lower side surface of the transverse plate (31), the lower end face of the energy consumption strip steel plate (1) is tightly attached to and fixedly connected with the inner side surface of the vertical plate (32),
the energy consumption strip steel plate (1) is provided with an energy consumption section (11) with a size shrinking inwards,
the middle part of the out-of-plane constraint steel plate sleeve (2) is provided with a cavity space (4) for accommodating the energy consumption strip steel plate along the oblique arrangement direction of the energy consumption strip steel plate (1), the energy consumption strip steel plate (1) is inserted into the cavity space, and the size of the cavity space is based on the premise that gaps are reserved between four sides of the energy consumption strip steel plate and four sides of the cavity space, and among the gaps reserved according to the stress direction, the gaps of the upper side and the lower side are relatively narrow, and the gaps of the left side and the right side are relatively wide;
the longitudinal side section of the out-of-plane constraint steel plate sleeve (2) is trapezoid, the size of the out-of-plane constraint steel plate sleeve along the oblique arrangement direction of the energy consumption strip steel plate (1) is smaller than that of the energy consumption strip steel plate (1), the bottom end face of the out-of-plane constraint steel plate sleeve is parallel to the vertical plate (32) and tightly props against the inner side surface of the vertical plate (32), the top end face of the out-of-plane constraint steel plate sleeve is parallel to the transverse plate (31), and an energy consumption displacement gap (5) is reserved between the top end face of the out-of-plane constraint steel plate sleeve and the lower side surface of the transverse plate (31); the out-of-plane constraint steel plate sleeve (2) is abutted against the inner side of the vertical plate (32) under the action of gravity, so that energy consumption support is completed;
the out-of-plane constraint steel plate sleeve (2) is formed by fixedly connecting two side plates which are identical in outer contour and are oppositely clamped at two sides of the energy consumption strip steel plate (1), the middle part of the inner side surface of each side plate is provided with a concave along the oblique arrangement direction of the energy consumption strip steel plate, the side plates are made to be groove plates by the concave, the groove plates comprise groove side plates (21) and groove bottom plates (22), the groove side plates (21) at two sides are attached, and a cavity space (4) is formed by the concave between the groove bottom plates at two sides;
the shear supporting steel plate (3) is an integrally formed angle plate;
the ledge plates on the two sides are fixedly connected into a whole through connecting bolts or welding;
the limit displacement of the axillary support type bearing energy dissipation support is not larger than the allowable maximum displacement of the energy dissipation displacement gap (5).
2. The underarm load-bearing energy dissipating brace of claim 1, wherein: the energy consumption strip steel plate is integrally in a dog-bone shape and is obliquely arranged at 45 degrees, and consists of an energy consumption section (11) at the middle part, elastic constraint sections (12) at the two ends and an elastic connection section (13) of the small-to-large concave arc-shaped smooth transition energy consumption section (11) and the elastic constraint sections (12).
3. The underarm load-bearing energy dissipating brace of claim 2, wherein: the bottom end face of the out-of-plane constraint steel plate sleeve is welded and fixed with the inner side surface of the vertical plate.
4. An axillary support type load-bearing energy dissipating brace according to any one of claims 1-3, wherein: an axillary bracing type bearing energy dissipation support is arranged at the axillary part of the joint, the first connecting piece (9) is provided with two rows which are respectively positioned at the two sides of the out-of-plane constraint steel plate sleeve (2), the second connecting piece (10) is also provided with two rows which are respectively positioned at the two sides of the out-of-plane constraint steel plate sleeve (2),
or at least two axillary bracing type bearing energy dissipation supports are arranged at the axillary positions of the connecting points in parallel, the first connecting piece (9) is provided with two rows and is respectively positioned at the outermost two sides of all out-of-plane constraint steel plate sleeves (2), and the second connecting piece (10) is also provided with two rows and is respectively positioned at the outermost two sides of all out-of-plane constraint steel plate sleeves (2);
the first connecting piece (9) and the second connecting piece (10) are bolts, and bolt holes (6) are formed in the corresponding transverse plates and the corresponding vertical plates.
5. A method of constructing an underarm load-bearing energy dissipating brace according to any one of claims 1 to 4, comprising the steps of:
step one, designing the size and the number of axillary support type bearing energy consumption supports required to be arranged at the axillary positions of the connecting nodes according to calculation;
step two, processing a shear supporting steel plate (3), an energy consumption strip steel plate (1) and an out-of-plane constraint steel plate sleeve (2) in a factory; processing the out-of-plane constraint steel plate sleeve into two side plates, and processing the side plates into groove plates;
thirdly, the top end face of the energy consumption strip steel plate (1) is welded with the lower side of the transverse plate (31), and the bottom end face of the energy consumption strip steel plate (1) is welded with the inner side of the vertical plate (32);
step four, respectively buckling two side plates on two sides of the energy consumption strip steel plate (1), buckling the energy consumption strip steel plate between the groove bottom plates (22), and then fixedly connecting ledge plates (21) on two sides; the out-of-plane constraint steel plate sleeve (2) is propped against the inner side of the vertical plate (32) under the action of gravity, or the out-of-plane constraint steel plate sleeve (2) is welded with the inner side of the vertical plate (32) to prevent position deviation; an energy consumption displacement gap (5) is exposed between the out-of-plane constraint steel plate sleeve (2) and the transverse plate;
fifthly, transporting the manufactured axillary bracing type bearing energy consumption brace to a construction site;
step six, the transverse plate (31) is fixedly connected to the bottom of the structural beam through the first connecting piece (9), and the vertical plate (32) is fixedly connected to the inner side part of the structural column through the second connecting piece (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810078982.4A CN108086516B (en) | 2018-01-26 | 2018-01-26 | Axillary bracing type bearing energy dissipation brace and construction method thereof |
Applications Claiming Priority (1)
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| CN202007535U (en) * | 2010-11-30 | 2011-10-12 | 上海维固工程实业有限公司 | Supporting reinforcing structure |
| CN102409757A (en) * | 2011-08-10 | 2012-04-11 | 沈阳建筑大学 | Anti-seismic structure of energy-consumption angle brace |
| JP2014020176A (en) * | 2012-07-23 | 2014-02-03 | Daiwa House Industry Co Ltd | Buckling-restrained brace |
| CN105926764A (en) * | 2016-06-13 | 2016-09-07 | 姚攀峰 | Industrialized pre-processed regenerative structural system and method for constructing same |
| CN106592807A (en) * | 2017-01-11 | 2017-04-26 | 东南大学 | Changeable energy consumption connecting assembly for beam-column connection of assembly type concrete frame |
| CN207794358U (en) * | 2018-01-26 | 2018-08-31 | 北京建院科技发展有限公司 | A kind of armpit support formula carrying energy dissipation brace |
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| CN202007535U (en) * | 2010-11-30 | 2011-10-12 | 上海维固工程实业有限公司 | Supporting reinforcing structure |
| CN102409757A (en) * | 2011-08-10 | 2012-04-11 | 沈阳建筑大学 | Anti-seismic structure of energy-consumption angle brace |
| JP2014020176A (en) * | 2012-07-23 | 2014-02-03 | Daiwa House Industry Co Ltd | Buckling-restrained brace |
| CN105926764A (en) * | 2016-06-13 | 2016-09-07 | 姚攀峰 | Industrialized pre-processed regenerative structural system and method for constructing same |
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