CN217810467U - Semi-rigid connection structure suitable for capping beam and upright post in earthquake multi-occurrence area - Google Patents
Semi-rigid connection structure suitable for capping beam and upright post in earthquake multi-occurrence area Download PDFInfo
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- CN217810467U CN217810467U CN202221488631.9U CN202221488631U CN217810467U CN 217810467 U CN217810467 U CN 217810467U CN 202221488631 U CN202221488631 U CN 202221488631U CN 217810467 U CN217810467 U CN 217810467U
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- uhpc
- cap
- fixedly connected
- upright post
- connection structure
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- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 46
- 239000004567 concrete Substances 0.000 claims abstract description 20
- 239000011178 precast concrete Substances 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 210000002435 tendon Anatomy 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 10
- 230000009471 action Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004540 pour-on Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a be applicable to many district bent cap of earthquake and half rigid connection structure of stand, including the cushion cap, the equal fixedly connected with stand in both sides at cushion cap top, the top fixedly connected with bent cap of stand, the stand includes the precast concrete column cap, the top fixedly connected with vertical reinforcing bar of precast concrete column cap, vertical reinforcing bar extends to the inner chamber of bent cap, the fixed surface of vertical reinforcing bar is connected with the stirrup. The utility model discloses a cushion cap, stand and bent cap can realize that the construction tolerance is big, can restrict the damage in the plasticity hinge to can prevent that the bent cap from producing the reinforcing bar and surging under the great earthquake action, have the advantage of good anti-seismic performance, just the utility model discloses a two-layer UHPC concrete adds the structural style of ordinary concrete, and the middle zone can be approximately regarded as the plasticity hinge, has guaranteed the formation of stand required position plasticity hinge, and in addition, the concatenation length of reinforcing bar has been shortened in the use of concatenation district to the UHPC concrete.
Description
Technical Field
The utility model relates to a bridge technical field specifically is a be applicable to many district bent cap of earthquake and stand semi-rigid connection structure.
Background
The direct and indirect economic losses caused by earthquake damage to the bridge structure are very huge, so that the requirement of people on the bridge earthquake resistance is higher and higher, and effective measures for improving the bridge earthquake resistance are that under the action of earthquake, nodes which are possibly damaged are reinforced to absorb kinetic energy generated by the action of earthquake, so that the beam falling or the damage of the bridge structure under the action of earthquake caused by collision are slowed down, and the bridge structure is designed according to the regulations on the existing highway bridge earthquake resistance design rule JTG/TB 02-01-2008: seismic intensity of 7 degrees and above 7 degrees, seismic isolation and reduction devices are used, for example, elastic devices are arranged between the main beams and the abutment breast wall,
and current cushion block integrated configuration includes dorsal part's fixed plate and the protection steel sheet of front side, this kind of cushion block integrated configuration discovers in the in-service use, the protect function of the protection steel sheet of front side is not enough, not only extravagant material, and its production preparation is all more complicated, need correspond on the protection steel sheet and set up exhaust hole and exhaust duct, the cost of manufacture is higher, simultaneously, the connection of current cushion block integrated configuration and bridge or abutment all is connected rather than through the connecting hole of seting up on the fixed plate, and in case cushion block integrated configuration takes place the problem when needing to be changed, because the distance between bridge or the abutment is not fixed only, if when the distance is narrower, thereby constructor can't get into and lead to changing work and carry out the difficulty.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be applicable to the many districts bent cap of earthquake and stand semi-rigid connection structure, possess good anti-seismic performance's advantage, solved the problem that the background art provided.
In order to achieve the above object, the utility model provides a following technical scheme: a semi-rigid connection structure suitable for a bent cap and an upright post in an earthquake multi-occurrence area comprises a bearing platform, wherein the upright post is fixedly connected to two sides of the top of the bearing platform, and the bent cap is fixedly connected to the top of the upright post;
the upright column comprises a precast concrete column head, wherein the top of the precast concrete column head is fixedly connected with a vertical steel bar, the vertical steel bar extends to the inner cavity of the capping beam, the surface of the vertical steel bar is fixedly connected with a stirrup, UHPC is poured at the joint between the precast concrete column head and the vertical steel bar, ordinary concrete is poured at the top of the UHPC, an UHPC column head is poured at the top of the ordinary concrete, and the UHPC column head extends to the inner cavity of the capping beam;
the bent cap comprises a prestressed tendon, a UHPC transverse partition plate is poured on the surface of the prestressed tendon, a UHPC top plate is poured on the top of the UHPC transverse partition plate, a UHPC cushion block is fixedly connected to the top of the UHPC top plate, and a hoisting ring is fixedly connected to the top of the UHPC top plate.
Preferably, the columns are prefabricated in a factory and installed on site.
Preferably, the splicing area between the precast concrete column cap and the vertical steel bar is welded by adopting double-sided welding.
Preferably, the top of the UHPC column head needs to be paved with cushion bedding slurry during assembly, and the bottom of the bent cap is provided with an assembly hole.
Preferably, the bottom of the upright post is reserved with a mounting hole, and the mounting hole is matched with a top assembling post of the bearing platform for use.
Preferably, the UHPC is prepared by sleeve grouting after the upright column and the bent cap are assembled, and grouting adopts a method of grouting at a grouting port at the bottom of the sleeve and grouting at a grout outlet at the top.
Preferably, the common concrete becomes a plastic hinge area after being solidified and formed.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a cushion cap, stand and bent cap can realize that the construction tolerance is big, can restrict the damage in the plasticity hinge to can prevent that the bent cap from producing the reinforcing bar and surging under the great earthquake action, have the advantage of good anti-seismic performance, just the utility model discloses a two-layer UHPC concrete adds the structural style of ordinary concrete, and the middle zone can be approximately regarded as the plasticity hinge, has guaranteed the formation of stand required position plasticity hinge, and in addition, the concatenation length of reinforcing bar has been shortened in the use of concatenation district to the UHPC concrete.
2. The utility model discloses a splice area between precast concrete column cap and vertical reinforcing bar should adopt double-sided welding to weld, can ensure connection quality.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic sectional view of the structure of the present invention;
FIG. 3 is a schematic left sectional view of the structure of the present invention;
FIG. 4 is a schematic cross-sectional view of the canopy of the present invention;
FIG. 5 is a schematic view of the stand column of the present invention;
fig. 6 is a schematic top view of the stand column of the present invention.
In the figure: 1. a bearing platform; 2. a column; 21. a concrete column cap; 22. UHPC; 23. ordinary concrete; 24. UHPC column cap; 25. vertical reinforcing steel bars; 26. hooping; 3. a capping beam; 31. prestressed tendons; 32. a UHPC cushion block; 33. a UHPC diaphragm plate; 34. a UHPC top plate; 35. and (6) hoisting a ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The components of the present invention are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known by the technical manual or by the conventional experimental method.
Referring to fig. 1-6, a semi-rigid connection structure for a capping beam and an upright post in an earthquake-prone area comprises a bearing platform 1, wherein the two sides of the top of the bearing platform 1 are fixedly connected with upright posts 2, the upright posts 2 are prefabricated in a factory and are installed on site, mounting holes are reserved at the bottoms of the upright posts 2 and are matched with assembly posts at the top of the bearing platform 1 for use, and the top of the upright posts 2 is fixedly connected with a capping beam 3;
the upright post 2 comprises a precast concrete post head 21, a vertical steel bar 25 is fixedly connected to the top of the precast concrete post head 21, a splicing area between the precast concrete post head 21 and the vertical steel bar 25 is welded by double-sided welding, the connection quality can be ensured by welding the splicing area between the precast concrete post head 21 and the vertical steel bar 25 by double-sided welding, the vertical steel bar 25 extends to an inner cavity of the capping beam 3, a stirrup 26 is fixedly connected to the surface of the vertical steel bar 25, UHPC22 is poured at the joint between the precast concrete post head 21 and the vertical steel bar 25, the UHPC22 is prepared by sleeve grouting after the upright post 2 and the capping beam 3 are assembled, the grouting adopts a method of sleeve bottom grouting port grouting and slurry bleeding at a top slurry outlet, common concrete 23 is poured at the top of the UHPC22, the common concrete 23 becomes a plastic hinge area after being solidified and formed, the UHPC post head 24 is poured at the top of the common concrete 23, the UHPC post head 24 extends to the inner cavity of the capping beam 3, cushion slurry is paved at the top of the UHPC post head 24 when the UHPC is assembled, and an assembling hole is provided with a mounting hole for the capping beam 3;
the bent cap 3 includes prestressing tendons 31, the UHPC diaphragm 33 has been pour on prestressing tendons 31's surface, UHPC roof 34 has been pour at the top of UHPC diaphragm 33, the top fixedly connected with UHPC cushion 32 of UHPC roof 34, UHPC roof 34 top fixedly connected with hoisting ring 35, through cushion cap 1, stand 2 and bent cap 3, can realize that the construction tolerance is big, can restrict the damage in the plastic hinge, and can prevent that bent cap 3 from producing the reinforcing bar yield under the action of major earthquake, have good shock resistance's advantage, just the utility model discloses a two-layer UHPC concrete adds the structural style of ordinary concrete 23, and the middle zone can be approximately regarded as the plastic hinge, has guaranteed the formation of the required position plastic hinge of stand 2, and in addition, the concatenation length of splicing of reinforcing bar has been shortened in the use of UHPC concrete at the splice area.
When the earthquake-proof cover beam is used, when an earthquake occurs, the upright post 2 consumes a part of energy generated by the earthquake through the plastic hinge area in the middle so as to reduce the damage of earthquake impact on the joint of the cover beam 3 and the upright post 2.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a be applicable to earthquake area bent cap and stand semi-rigid connection structure that sends out more, includes cushion cap (1), its characterized in that: both sides of the top of the bearing platform (1) are fixedly connected with upright columns (2), and the tops of the upright columns (2) are fixedly connected with bent caps (3);
the upright column (2) comprises a precast concrete column head (21), vertical steel bars (25) are fixedly connected to the top of the precast concrete column head (21), the vertical steel bars (25) extend to the inner cavity of the cover beam (3), stirrups (26) are fixedly connected to the surface of the vertical steel bars (25), UHPC (22) is poured at the joint between the precast concrete column head (21) and the vertical steel bars (25), ordinary concrete (23) is poured at the top of the UHPC (22), an UHPC column head (24) is poured at the top of the ordinary concrete (23), and the UHPC column head (24) extends to the inner cavity of the cover beam (3);
the capping beam (3) comprises prestressed tendons (31), a UHPC transverse partition plate (33) is poured on the surface of each prestressed tendon (31), a UHPC top plate (34) is poured on the top of each UHPC transverse partition plate (33), the top of each UHPC top plate (34) is fixedly connected with a UHPC cushion block (32), and the top of each UHPC top plate (34) is fixedly connected with a hoisting ring (35).
2. The semi-rigid connection structure of the capping beam and the upright post for earthquake multiple-occurrence areas of claim 1, wherein: the upright post (2) is prefabricated in a factory and is installed on site.
3. The semi-rigid connection structure of the capping beam and the upright post for earthquake multiple-occurrence areas of claim 1, wherein: and the splicing area between the precast concrete column cap (21) and the vertical steel bar (25) is welded by adopting double-sided welding.
4. The semi-rigid connection structure of the capping beam and the upright post for earthquake multiple-occurrence areas of claim 1, wherein: and when the UHPC column cap (24) is assembled, the top of the UHPC column cap needs to be paved with cushion bedding slurry, and the bottom of the bent cap (3) is provided with an assembling hole.
5. The semi-rigid connection structure of the capping beam and the upright post for earthquake multiple-occurrence areas of claim 1, wherein: and mounting holes are reserved at the bottoms of the stand columns (2) and are matched with the top assembling columns of the bearing platform (1) for use.
6. The semi-rigid connection structure of the capping beam and the upright post for earthquake multiple-occurrence areas of claim 1, wherein: and the UHPC (22) is prepared by sleeve grouting after the upright post (2) and the bent cap (3) are assembled, and grouting adopts a method of grouting at a grouting opening at the bottom of the sleeve and grouting at a grout outlet at the top.
7. The semi-rigid connection structure of the capping beam and the upright post for earthquake multiple-occurrence areas of claim 1, wherein: and the common concrete (23) becomes a plastic hinge area after being solidified and formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221488631.9U CN217810467U (en) | 2022-06-15 | 2022-06-15 | Semi-rigid connection structure suitable for capping beam and upright post in earthquake multi-occurrence area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221488631.9U CN217810467U (en) | 2022-06-15 | 2022-06-15 | Semi-rigid connection structure suitable for capping beam and upright post in earthquake multi-occurrence area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217810467U true CN217810467U (en) | 2022-11-15 |
Family
ID=83991753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221488631.9U Expired - Fee Related CN217810467U (en) | 2022-06-15 | 2022-06-15 | Semi-rigid connection structure suitable for capping beam and upright post in earthquake multi-occurrence area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217810467U (en) |
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2022
- 2022-06-15 CN CN202221488631.9U patent/CN217810467U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221115 |