CN214738935U - Energy-consuming connection node of shear wall - Google Patents
Energy-consuming connection node of shear wall Download PDFInfo
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- CN214738935U CN214738935U CN202023127075.6U CN202023127075U CN214738935U CN 214738935 U CN214738935 U CN 214738935U CN 202023127075 U CN202023127075 U CN 202023127075U CN 214738935 U CN214738935 U CN 214738935U
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Abstract
The utility model relates to an energy consumption connected node of shear force wall for connect the shear force wall and by the connecting piece, include pre-buried at the shear force wall respectively and by first connecting module and the second connecting module in the connecting piece, first connecting module and second connecting module are connected, first connecting module includes reinforcing bar and sleeve pipe, the reinforcing bar inserts the cover intraductally, be equipped with one or more friction power consumption unit between reinforcing bar and the sleeve pipe, each friction power consumption unit includes a plurality of friction discs and a plurality of pretension bolt that correspond, a plurality of friction discs encircle and hug closely on the reinforcing bar lateral wall, it has the screw hole to open on the sleeve pipe, pretension bolt's tip passes the screw hole and withstands the friction disc, be equipped with first elastic block between the tip of reinforcing bar and the second connecting module, the sleeve pipe intussuseption is filled with the concrete. Compared with the prior art, the utility model has the advantages of the ductility is good, not fragile and be convenient for restore and change.
Description
Technical Field
The utility model belongs to the technical field of the building engineering and specifically relates to an energy consumption connected node of shear force wall is related to.
Background
The damage of earthquake to the building can not be accurately predicted, the time and labor are wasted for repairing the damaged building, and huge loss is caused to social economy, so that how to enable the building to have certain damage resistance is a concern in the field of current building engineering.
The reinforced concrete shear wall is a common main lateral force resistant component in a high-rise building, has high rigidity and high bearing capacity, but is easy to generate concrete crushing and reinforcing steel bar yielding, breaking and other damages at corners of the wall under the action of an earthquake, so that the wall is damaged prematurely and has low ductility.
The prior art also provides some solutions, and chinese patent CN202020025082.6 proposes a steel reinforced concrete shear wall structure, in which the built-in section steels at two ends of the concrete shear wall are connected at the wall foot part by a connecting plate, the connecting plate is made of high-strength steel, the elastic deformation capability of the high-strength steel is utilized, the coupling beam energy dissipation mechanism under the action of medium and small earthquakes is fully exerted, the ultimate strength of the connecting plate is lower than the yield strength of the built-in section steels, it is ensured that the damage of the wall under the action of large earthquake is concentrated at the connecting plate, the connecting plate plays a role of a fuse, and the proposed steel reinforced concrete shear wall structure with the fuse can realize the goal of controllable damage position and easy repair.
Although the ductility of the shear wall is improved, the high-strength steel is embedded in the shear wall, and the high-strength steel consumes energy by virtue of plastic yield, so that the shear wall still has the possibility of being damaged under large accumulated plastic deformation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an energy consumption connected node of shear force wall in order to overcome the defect that above-mentioned prior art exists, the ductility is good, and is not fragile, is convenient for restore and change.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides an energy consumption connected node of shear force wall for connect the shear force wall and by the connecting piece, including pre-buried first connecting module and the second connecting module in the shear force wall and by the connecting piece respectively, first connecting module and second connecting module connect, first connecting module include reinforcing bar and sleeve pipe, the reinforcing bar insert the cover intraductally, reinforcing bar and sleeve pipe between be equipped with one or more friction power consumption unit, each friction power consumption unit includes a plurality of friction discs and a plurality of pretension bolts that correspond, a plurality of friction discs encircle and hug closely on the reinforcing bar lateral wall, the sleeve pipe on open threaded hole, pretension bolt's tip pass the screw hole and withstand the friction disc, the tip of reinforcing bar and second connecting module between be equipped with first elastic block, the sleeve pipe intussuseption be filled with the concrete.
Furthermore, the second connecting module comprises an end plate and an anchor bar, the sleeve, the end plate and the anchor bar are connected in sequence, and the anchor bar is embedded in the connected piece.
Furthermore, the second connecting module and the first connecting module have the same structure and are symmetrically arranged.
Further, the sleeve of the first connecting module and the sleeve of the second connecting module are designed integrally.
Furthermore, a second elastic block is arranged between the two adjacent friction plates and surrounds the side wall of the steel bar.
Furthermore, the friction energy dissipation units are arranged at intervals along the axial direction of the sleeve.
Furthermore, a limiting groove is formed in the friction plate, and the end portion of the pre-tightening bolt is inserted into the limiting groove.
Furthermore, the limiting groove is a through groove perpendicular to the axial direction of the sleeve.
Furthermore, the cross section of the friction plate is in a sector shape.
Furthermore, the contact area of the steel bars and the friction plate is a smooth surface.
Compared with the prior art, the utility model discloses have with following beneficial effect:
(1) the utility model discloses pre-buried first connection module and second connection module respectively in shear force wall and quilt connecting piece, first connection module includes reinforcing bar and sleeve pipe, the reinforcing bar inserts in the sleeve pipe, be equipped with friction power consumption unit between reinforcing bar and the sleeve pipe, friction power consumption unit includes friction disc and corresponding pretension bolt, a plurality of friction discs encircle and hug closely on the reinforcing bar lateral wall, open threaded hole on the sleeve pipe, pretension bolt's tip passes the threaded hole and withstands the friction disc, the sleeve pipe intussuseption is filled with concrete, through adjusting the pretightning force adjustment reinforcing bar of pretension bolt and the frictional force between the friction disc, the friction disc can exert the frictional force along the sleeve pipe axial to the reinforcing bar when the corner does not take place to warp, guarantee reinforcing bar position stationary, when the corner takes place to warp, when reinforcing bar atress is greater than frictional force, the reinforcing bar can take place to slide with the friction disc along sleeve pipe axial, the friction disc has played the supporting role to the reinforcing bar simultaneously, the structure is simple, the reinforcing steel bars are prevented from yielding due to excessive deformation of the wall foot, the first elastic blocks at the ends of the reinforcing steel bars have a buffering effect, the ends of the reinforcing steel bars are prevented from being directly touched with the second connecting modules and pressed, the ductility of the wall corner of the shear wall is greatly improved, the energy-consuming connecting nodes are not easy to damage, the sleeve has supporting and reinforcing steel bar protecting effects, the concrete is only broken after the wall corner is damaged, the bolt is disassembled, the repairing and replacing can be carried out, and the operation is simple;
(2) the structure of the second connecting module is the same as that of the first connecting module, the sleeve of the first connecting module and the sleeve of the second connecting module are integrally designed, and the second connecting module and the first connecting module both have ductility, so that the ductility of the energy-consumption connecting node is further improved;
(3) the utility model discloses being equipped with the second elastic block around reinforcing bar lateral wall and between two adjacent friction discs, second elastic block and friction disc constitute a tubular structure of cover at the reinforcing bar lateral wall, be convenient for when the installation directly with tubular structure cover on the reinforcing bar, realize the location before the installation, this tubular structure has along annular elastic variable simultaneously, pretension bolt exerts pressure to this tubular structure, because tubular structure has elastic variable, the frictional force size between tubular structure inner wall and the reinforcing bar remains stable, be difficult to become invalid, the reliability and the stability of power consumption connected node have been improved;
(4) the friction energy dissipation units are arranged at intervals along the axial direction of the sleeve, so that the friction force applied to the steel bar can be flexibly adjusted, the supporting points of the steel bar are increased, and the anti-yield capacity of the steel bar is improved;
(5) the friction plate is provided with the limiting groove, the end part of the pre-tightening bolt is inserted into the limiting groove, the friction plate is guaranteed not to move axially along the sleeve, the structure is stable, the limiting groove is a through groove perpendicular to the axial direction of the sleeve, the end part of the pre-tightening bolt can be conveniently inserted into the limiting groove, the installation error can be accommodated, and the installation difficulty is reduced;
(6) the cross section of the friction plate is fan-shaped, which is beneficial to better clinging to the reinforcing steel bar and increasing the friction force;
(7) the utility model discloses the reinforcing bar is the smooth surface with the region of friction disc contact, guarantees to form contact friction between reinforcing bar and the friction disc, has improved the frictional force size.
Drawings
FIG. 1 is a partial cross-sectional view of a shear wall of example 1;
fig. 2 is a front view of an energy-consuming connection node in embodiment 1;
FIG. 3 is a top view of an energy consuming connection node according to embodiment 1;
fig. 4 is a front view of an energy-consuming connection node in embodiment 2;
FIG. 5 is a schematic structural view of a friction plate;
the reference numbers in the figures illustrate:
1. the steel bar shear wall comprises a steel bar, 2. a sleeve, 3. a friction plate, 4. a pre-tightening bolt, 5. a first elastic block, 6. concrete, 7. a second elastic block, 8. a threaded hole, 9. a shear wall, 10. an end plate, 11. an anchor bar and 31. a limiting groove.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
An energy-consuming connection node of a shear wall is used for connecting a shear wall 9 and a connected piece, and comprises a first connection module and a second connection module which are respectively pre-embedded in a corner of the shear wall 9 and the connected piece, as shown in fig. 1, fig. 2 and fig. 3, wherein the first connection module is connected with the second connection module, the first connection module comprises a steel bar 1 and a sleeve 2, the steel bar 1 is inserted into the sleeve 2, two friction energy-consuming units are arranged between the steel bar 1 and the sleeve 2 and are arranged at intervals along the axial direction of the sleeve 2, each friction energy-consuming unit comprises two friction plates 3 and two corresponding pre-tightening bolts 4, the two friction plates 3 surround and cling to the side wall of the steel bar 1, a threaded hole 8 is formed in the sleeve 2, the end part of each pre-tightening bolt 4 penetrates through the threaded hole 8 and props against the corresponding friction plate 3, a first elastic block 5 is arranged between the end part of the steel bar 1 and the second connection module, and concrete 6 is filled in the sleeve 2, the connected piece is a foundation or other members.
The first elastic block 5 is made of foam, the length of the first elastic block 5 in the axial direction of the sleeve 2 is not smaller than the maximum relative sliding distance between the reinforcing steel bar 1 and the friction plate 3, the first elastic block 5 is prevented from penetrating through the first elastic block 5 and being deformed due to the fact that the first elastic block is touched with the second connecting module, and reliability is high.
The friction force of each friction plate 3 on the steel bar 1 is F, FyYield bearing capacity of the steel bar 1, FyAnd f satisfies the following formula:
nf<Fy
wherein n is the total number of friction disc 3, has avoided leading to reinforcing bar 1 to destroy because too big plinth warp, has greatly improved the ductility of shear force wall 9 plinth.
The second connecting module comprises an end plate 10 and an anchor bar 11, the sleeve 2, the end plate 10 and the anchor bar 11 are sequentially connected, and the anchor bar 11 is embedded in the connected piece.
Like fig. 5, the cross sectional shape of friction disc 3 is fan-shaped, is favorable to better hugging closely reinforcing bar 1, is equipped with spacing recess 31 on the friction disc 3, and the tip of pretension bolt 4 inserts in spacing recess 31, guarantees that friction disc 3 can not follow sleeve pipe 2 axial displacement, and spacing recess 31 is the axial logical groove of perpendicular to sleeve pipe 2, and the tip of pretension bolt 4 of being convenient for inserts spacing recess 31, can hold installation error, reduces the installation degree of difficulty.
Two second elastic blocks 7 with fan-shaped sections are adhered between two friction plates 3 surrounding the side wall of the steel bar 1, the second elastic blocks 7 are made of foam, the two second elastic blocks 7 and the two friction plates 3 form a tubular structure sleeved on the side wall of the steel bar 1, the tubular structure is conveniently and directly sleeved on the steel bar when being installed, positioning before installation is achieved, meanwhile, the tubular structure has an elastic variable along the annular direction, the pretightening bolt 4 applies pressure to the tubular structure, the tubular structure has the elastic variable, the friction force between the inner wall of the tubular structure and the steel bar 1 is kept stable, failure is not prone to occurring, and reliability and stability of the energy-consuming connection node are improved.
The area of reinforcing bar 1 and friction disc 3 contact is the smooth surface, guarantees to form contact friction between reinforcing bar 1 and the friction disc 3, has improved the frictional force size.
The installation method of the energy-consumption connecting node specifically comprises the following steps:
an end plate 10 is arranged at the end part of the sleeve 2, an anchor bar 11 is arranged on the end plate 10, and the anchor bar 11 is embedded in the connected piece;
paste second elastic block 7 between two friction discs 3, constitute the tubular structure, with this tubular structure cover on reinforcing bar 1, and insert reinforcing bar 1 in sleeve pipe 2, with pretension bolt 4 screw in sleeve pipe 2's screw hole 8, make pretension bolt 4's tip insert spacing recess 31 on the friction disc 3, and push up friction disc 3, paste first elastic block 5 between reinforcing bar 1's tip and second connection module, reinforcing bar 1's tip passes through the contact of the end plate 10 of first elastic block 5 and reinforcing bar 1's tip, then pour concrete 6 in sleeve pipe 2.
When the corner does not deform, friction disc 3 can exert the axial frictional force along sleeve pipe 2 to reinforcing bar 1, guarantee that reinforcing bar 1 rigidity, when the corner takes place to warp, reinforcing bar 1 is greater than when frictional force along sleeve pipe 2 axial atress, reinforcing bar 1 can take place relative slip along sleeve pipe 2 axial and friction disc 3, friction disc 3 has played the supporting role to reinforcing bar 1 simultaneously, avoided leading to reinforcing bar 1 to surrender because too big footing warp, the first elastic block 5 of reinforcing bar 1 tip has the cushioning effect, avoid reinforcing bar 1 tip direct and the touching of second link module and pressurized, the ductility of shear force wall corner has greatly been promoted, the power consumption connected node is not fragile, sleeve pipe 2 has the supporting and the guard action to reinforcing bar 1 simultaneously, only need break away concrete 6 after the corner damages, and disassemble the bolt, can repair and change, and the operation is simple.
Example 2
As shown in fig. 5, in the embodiment, the second connection module and the first connection module have the same structure and are symmetrically arranged, and the sleeve 2 and the first elastic block 5 of the first connection module are integrally designed with the sleeve 2 and the first elastic block 5 of the second connection module, respectively, so that the structure is simple, and the ductility of the energy-consuming connection node is further improved. The rest is the same as in example 1.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An energy-consumption connecting node of a shear wall is used for connecting the shear wall (9) and a connected piece, and is characterized by comprising a first connecting module and a second connecting module which are respectively embedded in the shear wall (9) and the connected piece, the first connecting module is connected with the second connecting module, the first connecting module comprises a steel bar (1) and a sleeve (2), the steel bar (1) is inserted into the sleeve (2), one or more friction energy-consumption units are arranged between the steel bar (1) and the sleeve (2), each friction energy-consumption unit comprises a plurality of friction plates (3) and a plurality of corresponding pre-tightening bolts (4), the friction plates (3) surround and cling to the side wall of the steel bar (1), the sleeve (2) is provided with a threaded hole (8), the end part of each pre-tightening bolt (4) penetrates through the threaded hole (8) and props against the friction plate (3), the connecting structure is characterized in that a first elastic block (5) is arranged between the end part of the steel bar (1) and the second connecting module, and concrete (6) is filled in the sleeve (2).
2. The energy-consuming connection node of the shear wall according to claim 1, wherein the second connection module comprises an end plate (10) and an anchor bar (11), the sleeve (2), the end plate (10) and the anchor bar (11) are sequentially connected, and the anchor bar (11) is embedded in the connected member.
3. The energy-consuming connection node of a shear wall according to claim 1, wherein the second connection module and the first connection module have the same structure and are symmetrically arranged.
4. A shear wall energy dissipating connection node according to claim 3, wherein the bushings (2) of the first connection module and the bushings (2) of the second connection module are integrally designed.
5. A power dissipating connection node of a shear wall according to claim 1, wherein a second elastic block (7) is provided around the side wall of the steel bar (1) and between two adjacent friction plates (3).
6. A shear wall energy dissipating connection node according to claim 1, wherein the plurality of friction energy dissipating units are arranged axially spaced along the casing (2).
7. The energy-consuming connection node of the shear wall according to claim 1, wherein a limiting groove (31) is formed in the friction plate (3), and the end of the pre-tightening bolt (4) is inserted into the limiting groove (31).
8. The energy-consuming connection node of a shear wall according to claim 7, wherein the limiting groove (31) is a through groove perpendicular to the axial direction of the sleeve (2).
9. A power dissipating connection node of a shear wall according to claim 1, wherein the friction plates (3) are sector shaped in cross section.
10. The energy-consuming connection joint of the shear wall according to claim 1, wherein the contact area between the steel bars (1) and the friction plates (3) is a smooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023127075.6U CN214738935U (en) | 2020-12-23 | 2020-12-23 | Energy-consuming connection node of shear wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023127075.6U CN214738935U (en) | 2020-12-23 | 2020-12-23 | Energy-consuming connection node of shear wall |
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| Publication Number | Publication Date |
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| CN214738935U true CN214738935U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023127075.6U Active CN214738935U (en) | 2020-12-23 | 2020-12-23 | Energy-consuming connection node of shear wall |
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| CN (1) | CN214738935U (en) |
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