CN113186812A - Prestressed segment assembled pier with SMA energy dissipation reinforcing steel bars at bottom and assembling method - Google Patents
Prestressed segment assembled pier with SMA energy dissipation reinforcing steel bars at bottom and assembling method Download PDFInfo
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- CN113186812A CN113186812A CN202110576974.4A CN202110576974A CN113186812A CN 113186812 A CN113186812 A CN 113186812A CN 202110576974 A CN202110576974 A CN 202110576974A CN 113186812 A CN113186812 A CN 113186812A
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- energy dissipation
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention belongs to the field of bridge engineering, and particularly relates to a prestressed section assembled pier with SMA energy dissipation steel bars at the bottom and an assembling method. The device comprises a bearing platform, prestressed reinforcements, reinforced concrete segments, SMA energy-consuming reinforcements, steel base plates, rubber pads, reinforcement connectors and anchoring devices; the bridge pier is connected with a bearing platform and is provided with a reinforced concrete bottom section, a layer of rubber pad with dual functions of energy consumption and protection is arranged between the bottom section and the bearing platform, and steel base plates are respectively arranged on the upper side and the lower side of the rubber pad; the longitudinal bars in the bottom sections are connected with the SMA energy dissipation reinforcing steel bars through reinforcing steel bar connectors, the SMA energy dissipation reinforcing steel bars are located in the reserved PVC pipelines, the PVC pipelines sequentially penetrate through the steel backing plate, the rubber pad, the steel backing plate and the reserved hole channels of the bearing platform from the plastic hinge areas of the bottom sections downwards, and finally the tail ends of the SMA energy dissipation reinforcing steel bars are anchored in the anchoring devices in the bearing platform. The invention has the advantages of strong energy consumption capability, strong self-resetting capability, small residual displacement, small pier bottom concrete damage and the like, and is suitable for popularization and use in middle and high-intensity areas.
Description
Technical Field
The invention belongs to the field of bridge engineering, and particularly relates to a prestressed section assembled pier with SMA energy dissipation steel bars at the bottom and an assembling method.
Background
The prefabricated section assembled pier is widely used in the field of bridge engineering in recent years due to the characteristics of high construction speed, high construction quality, small environmental influence and the like. Compared with the common prefabricated segment assembled pier, the pier body and the bearing platform of the prestressed segment assembled pier and all the segments of the pier body are connected through dry joints or glue joints, and all the segments of the pier and the bearing platform are connected together by means of prestress. The prestressed segment assembled pier has good self-resetting capability, has small residual displacement after low-seismic-level earthquake action, and can be quickly repaired and used, so that the prestressed segment assembled pier is widely applied to urban viaducts and sea-crossing bridges in low-intensity areas. Because the energy consumption capability of the prestressed segment assembled pier is insufficient, the pier is easy to collapse and damage under the action of strong earthquake, so that the prestressed segment assembled pier is mainly constructed and used in middle and low-intensity earthquake areas at present, and in order to further promote the application of the prefabricated segment assembled pier in bridge engineering in middle and high-intensity areas, the structural form needs to be further improved and a new material is adopted to enhance the energy consumption capability.
The conventional method for enhancing the energy consumption capability of the prestressed segment assembled pier is to adopt energy consumption materials or arrange energy consumption devices. The method for improving the energy consumption capability of the prestressed section assembled pier mainly comprises the following steps: arranging energy-consuming steel bars, arranging a grouting sleeve inside, and adopting a high-ductility cement-based composite material for the bottom section. The commonly used energy-consuming steel bars in engineering are anti-seismic steel bars HRB335E and HRB400E, which have better ductility compared with the common hot-rolled ribbed steel bars. Shape Memory Alloys (SMA) have superelasticity, which means that they have a much larger deformation recovery capacity than ordinary metals under the action of an external force, i.e. large strain generated during a stress loading process is recovered along with unloading. SMA is therefore believed by professor Tazarv (Low-Damage Precast Columns for acquired Bridge Construction in High-semiconductor Zones [ J ]. Journal of Bridge Engineering,2016,21(3):04015056) to be used to make rebar and to work with ductile cement-based conformable material (ECC), both located in the plastic hinge region of an integrally cast-in-place pier and together acting to dissipate energy. But for the segment assembled pier, the energy-consuming steel bars can be subjected to shearing force due to the fact that the energy-consuming steel bars penetrate through the joints. Limited by weak shearing resistance, the energy-consuming steel bar made of SMA as a raw material is easy to be sheared and damaged. At present, no reasonable structural form exists for enabling the energy-consuming steel bar made of the SMA material to be used for assembling the pier by the prestressed segment.
Disclosure of Invention
The invention aims to solve the problems that the prestressed segmental assembled pier has poor energy consumption capability under the action of an earthquake, a pier bottom joint is excessively opened, column foot concrete of a bottom concrete segmental is seriously damaged and the like, and provides the prestressed segmental assembled pier with SMA energy consumption steel bars at the bottom, which is suitable for prefabricated parts and the prestressed segmental assembled pier assembled on site.
The technical solution for realizing the purpose of the invention is as follows: a prestressed segmental assembled pier with SMA energy dissipation steel bars at the bottom comprises a bearing platform, SMA energy dissipation steel bars, a plurality of sections of hollow concrete segments, a steel backing plate and a rubber pad;
the bearing platform is sequentially provided with a steel backing plate, a rubber pad, a steel backing plate and a plurality of sections of hollow concrete segments, the bottom of the hollow concrete segment at the bottom is connected with SMA energy dissipation reinforcing steel bars, and the other ends of the SMA energy dissipation reinforcing steel bars penetrate through the steel backing plate, the rubber pad and the steel backing plate and are fixed on the bearing platform.
Furthermore, the SMA energy-consumption steel bar is sleeved with a PVC pipeline, the upper end of the PVC pipeline is embedded in the bottom concrete segment and sequentially penetrates through the steel backing plate, the rubber pad, the steel backing plate and the bearing platform downwards, and the lower end of the PVC pipeline is embedded in the bearing platform.
And furthermore, the lower end of the prestressed reinforcement is fixed in the bearing platform, and the prestressed reinforcement respectively penetrates through each hollow concrete segment along the axial direction and is anchored after being tensioned at the pier top.
Further, the cross section of hollow concrete segment is hollow square, and a plurality of vertical muscle of indulging of equipartition still are equipped with square horizontal stirrup in the annular concrete in the square concrete, and square horizontal stirrup sets up and is used for retraining the muscle outside indulging, forms the steel reinforcement cage together.
Furthermore, the hollow concrete section structure further comprises a steel bar connector, and the longitudinal bars of the hollow concrete section at the bottom are connected with the SMA energy-consuming steel bars through the steel bar connector.
Furthermore, the SMA energy dissipation steel bars are made of nickel-titanium shape memory alloy, the diameter of the SMA energy dissipation steel bars is 1.5 times that of the longitudinal bars, and the yield strength of the SMA energy dissipation steel bars is smaller than the yield strength of the longitudinal bars and larger than 90% of the yield strength of the longitudinal bars.
Furthermore, the energy-consuming steel bar bearing platform also comprises an anchoring device, wherein the anchoring device is arranged in the bearing platform, and one end of the SMA energy-consuming steel bar, which is used for connecting the bearing platform, is provided with an end head which is 3-5cm long and is provided with an external thread; and one end of the SMA energy dissipation steel bar is fixed in the bearing platform through the anchoring device at the end of the SMA energy dissipation steel bar.
Furthermore, the steel backing plate and the rubber pad are provided with pore channels corresponding to the number and the positions of the prestressed reinforcement and the SMA energy dissipation reinforcement, the size of the cross section of the rubber pad is the same as that of the cross section of the hollow concrete segment, the height of the rubber pad is 1/4 times of that of the hollow concrete segment at the bottom, and the size of the cross section of the steel backing plate is 5-10% larger than that of the rubber pad, and the thickness of the steel backing plate is 5-20 mm.
Compared with the prior art, the invention has the remarkable advantages that:
(1) the SMA steel bars of the bottom section are positioned in the PVC pipeline and penetrate downwards into the bearing platform to be anchored, and the SMA steel bars penetrating through the seam at the bottom of the pier play a role of energy consumption steel bars; meanwhile, due to the self-recovery characteristic of the SMA, the pier still has good self-resetting capability under the action of an earthquake while generating plastic deformation to dissipate energy; the rubber pad positioned between the bottom concrete segment and the bearing platform is a protection structure matched with the SMA steel bars, and plays dual roles of protection and energy consumption to ensure that the SMA steel bars can be applied to the prestressed segment assembled pier; the rubber pad deforms vertically under the action of an earthquake to achieve the effect of dissipating energy, and elastic dislocation deformation occurs horizontally to reduce shear deformation between joints to achieve the effect of protecting SMA energy-consuming steel bars with weak shear resistance; therefore, compared with the prior art, the problem of contradiction between the energy consumption capability and the self-resetting performance of the prestressed segmental assembled pier is solved to a certain extent, and the problem of shearing damage of the SMA energy consumption reinforcing steel bars is avoided due to the rubber pad protection structure.
(2) Under the action of earthquake, the steel base plates positioned between the rubber pad and the bottom section and between the rubber pad and the bearing platform play a role in coordinating stress; the steel backing plate enables the force transmitted by the reinforced concrete segments to act on the rubber pads more uniformly, and the steel backing plate and the bottom segments rotate in a coordinated mode to reduce the compressive stress of the edge concrete and delay the damage of cracking, peeling and the like.
Drawings
Fig. 1 is a schematic view of the overall structure of the assembled pier of the present invention.
Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.
Fig. 3 is a schematic view of the reinforcing bar coupler according to the present invention.
Fig. 4 is a schematic view of the anchoring device of the present invention.
Description of reference numerals:
1-longitudinal bar, 2-horizontal stirrup, 3-SMA energy dissipation bar, 4-hollow concrete segment, 5-prestressed bar, 6-steel backing plate, 7-rubber pad, 8-bar connector, 9-anchoring device and 10-bearing platform.
Detailed Description
The following description will be made of a specific embodiment of a prestressed segment assembled pier with SMA energy dissipation steel bars at the bottom according to the present invention with reference to the accompanying drawings 1 to 3 of the specification:
as shown in the attached figure 1, the invention provides a prestressed segment assembled pier with SMA energy dissipation steel bars at the bottom, which mainly comprises: the concrete energy-saving device comprises longitudinal bars 1, horizontal stirrups 2, SMA energy-consuming reinforcing bars 3, hollow concrete segments 4, prestressed reinforcing bars 5, steel backing plates 6, rubber pads 7, reinforcing bar connectors 8, anchoring devices 9 and bearing platforms 10.
The bearing platform 10 is fixed on the ground, the rubber pad 7 is placed on the bearing platform 10, the steel base plate 6 is respectively placed on the upper surface and the lower surface of the rubber pad, and pore channels are reserved on the bearing platform, the rubber pad 7 and the steel base plate 6 according to the number and the positions of the pre-stressed steel bars 5 and the SMA energy dissipation steel bars 3.
The bottom hollow concrete segment 4 is placed above the steel backing plate 6, and the rest hollow concrete segments 4 are sequentially placed above the last hollow concrete segment 4. The inside and outside of the cross section of the hollow concrete segment 4 are both square, and the inside of the hollow concrete segment contains a plurality of vertical longitudinal bars 1 which are uniformly distributed along the side length. The horizontal stirrups 2 are square and are restrained outside the longitudinal reinforcements 1, and a reinforcement cage is formed together. During construction, the reinforcement cage is placed in a template for pouring concrete, and finally the longitudinal bars 1, the horizontal stirrups 4 and the hollow concrete segments 4 form a whole to be stressed and deformed together.
The longitudinal bar 1 in the hollow concrete section 4 at the bottom is connected with the SMA energy dissipation steel bar 3 through a steel bar connector 8, the SMA energy dissipation steel bar 3 is arranged in a PVC pipeline, the upper end of the PVC pipeline is embedded in the concrete section at the bottom and sequentially penetrates through a steel base plate 6, a rubber pad 7, the steel base plate 6 and a bearing platform 10 downwards, and the lower end of the PVC pipeline is embedded in the bearing platform 10.
The prestressed reinforcement 5 is an unbonded external prestressed reinforcement, the prestressed reinforcement 5 is positioned in the center of the cross section, the upper end of the prestressed reinforcement is anchored on the pier top capping beam, and the lower end of the prestressed reinforcement is anchored at the bottom of the bearing platform 10
The invention has the following preferable implementation mode in engineering:
step 1: and (5) binding a reinforcement cage. The reinforcement cage of the bottom concrete segment comprises: indulge muscle 1, horizontal stirrup 2, SMA power consumption reinforcing bar 3, steel bar connector 8, the steel reinforcement cage of other concrete segments includes: longitudinal bars 1 and horizontal stirrups 2. The two ends of the steel bar connector 8 are respectively inserted into the longitudinal bars 1 and the SMA energy dissipation steel bars 3, wherein the SMA energy dissipation steel bars 3 with larger diameters are located at the female end, the longitudinal bars 1 are located at the sub-end, and the male and female bolts in the steel bar connector are screwed after the longitudinal bars and the SMA energy dissipation steel bars are aligned. And the PVC pipeline is sleeved on the outer side of the SMA energy-consuming reinforcing steel bar 3.
Step 2: and (5) manufacturing a concrete segment template. And respectively manufacturing each hollow concrete segment 4, a bearing platform 10 and a capping beam template, wherein the bearing platform 10 is provided with a pore passage for the prestressed reinforcement 5 and the SMA energy consumption reinforcement 3, and the diameter of the pore passage is 1.5 times of the diameter of the prestressed reinforcement 5 and the diameter of the PVC pipeline in a sleeved mode.
And step 3: and pouring concrete and curing. And respectively pouring each hollow concrete segment 4, the cover beam and the bearing platform 10, and maintaining according to the standard requirement. After the casting is finished, a part of the SMA energy dissipation steel bar 3 is arranged outside the segment.
And 4, step 4: and (4) placing a bearing platform. The prestressed reinforcement 5 is penetrated and anchored in the hole channel of the bearing platform, then the steel base plate 6, the rubber pad 7 and the steel base plate 6 are sequentially placed, and the reserved hole channels are aligned when the prestressed reinforcement is placed.
And 5: the bottom segment is installed. And (3) inserting the PVC pipeline which is provided with the SMA energy consumption steel bar 3 and extends out of the bottom section into a pore channel reserved in the steel backing plate 6, the rubber pad 7, the steel backing plate 6 and the bearing platform 10 in sequence, and anchoring the tail end of the SMA energy consumption steel bar 3 after inserting the tail end into an anchoring device in the bearing platform.
Step 6: and assembling other sections. Before assembling, the planes of the concrete segments 4 are polished to be flat, a layer of cement mortar is smeared on the cross section to be leveled and play a role in bonding, and the concrete segments 4 are sequentially placed above the previous concrete segment 4.
And 7: and (4) prestress tension. And (3) aligning the reserved hole in the center of the capping beam with the prestressed steel bar to penetrate through, tensioning and anchoring the prestressed steel bar 5 at the pier top after placement is finished, and combining all the sections together to form the whole pier.
The prestressed section assembled pier disclosed by the invention utilizes the SMA energy dissipation steel bars penetrating through the joints to connect the steel reinforcement cage in the bottom concrete section with the bearing platform, the SMA energy dissipation steel bars are main energy dissipation elements and act together with the rubber pads between the bottom concrete section and the bearing platform as secondary energy dissipation elements, and the acting area is a pier bottom plastic hinge area.
The scope of the present invention includes, but is not limited to, the above embodiments, and any prestressed segmental assembled pier that meets the claims of the present invention and that any appropriate changes or modifications thereto by those skilled in the art shall fall within the scope of the present invention.
Claims (9)
1. A prestressed segmental assembled pier with SMA energy dissipation steel bars at the bottom is characterized by comprising a bearing platform (10), SMA energy dissipation steel bars (3), a plurality of sections of hollow concrete segments (4), a steel backing plate (6) and a rubber pad (7);
the bearing platform (10) is sequentially provided with a steel backing plate, a rubber pad, the steel backing plate and a plurality of sections of hollow concrete segments, the bottom of the hollow concrete segment at the bottom is connected with SMA energy dissipation steel bars (3), and the other ends of the SMA energy dissipation steel bars (3) penetrate through the steel backing plate, the rubber pad and the steel backing plate and are fixed on the bearing platform.
2. The spliced pier according to claim 1, wherein the SMA energy-consuming reinforcing steel bars (3) are sleeved with PVC pipelines, the upper ends of the PVC pipelines are embedded in the bottom concrete segment and sequentially penetrate through the steel backing plate, the rubber pad, the steel backing plate and the bearing platform downwards, and the lower ends of the PVC pipelines are embedded in the bearing platform.
3. The spliced pier according to claim 2, further comprising prestressed reinforcements (5), wherein the lower ends of the prestressed reinforcements (5) are fixed in the bearing platform (10), axially penetrate through the hollow concrete segments (4) respectively, and are anchored after being tensioned at the pier top.
4. The spliced pier according to claim 3, wherein the cross section of the hollow concrete segment (4) is hollow and square, a plurality of vertical longitudinal bars (1) are uniformly distributed in the square concrete, a square horizontal stirrup (2) is further arranged in the annular concrete, and the square horizontal stirrup (2) is arranged on the outer side of each longitudinal bar (1) and used for restraining the longitudinal bars (1) to form a reinforcement cage together.
5. The spliced pier according to claim 4, further comprising a steel bar connector (8), wherein the longitudinal bars (1) of the hollow concrete sections at the bottom are connected with the SMA energy dissipation steel bars (3) through the steel bar connector (8).
6. The spliced pier according to claim 5, wherein the SMA energy dissipation steel bars (3) are made of nickel-titanium shape memory alloy, the diameter of the SMA energy dissipation steel bars (3) is 1.5 times that of the longitudinal bars, and the yield strength of the SMA energy dissipation steel bars (3) is smaller than that of the longitudinal bars and larger than 90% of that of the longitudinal bars.
7. The spliced pier according to claim 6, further comprising an anchoring device, wherein the anchoring device is arranged in the bearing platform, and one end, used for connecting the bearing platform, of the SMA energy-consuming reinforcing steel bar (3) is provided with a 3-5 cm-long end provided with an external thread; the end of the SMA energy dissipation steel bar (3) fixes one end of the SMA energy dissipation steel bar in the bearing platform through the anchoring device.
8. The spliced pier according to claim 7, wherein the steel pad plate (6) and the rubber pad (7) are provided with pore channels corresponding to the number and positions of the prestressed reinforcement (5) and the SMA energy dissipation reinforcement (3), the size of the cross section of the rubber pad (7) is the same as that of the cross section of the hollow concrete segment (4), the height of the rubber pad is 1/4 times of that of the hollow concrete segment (4) at the bottom, the size of the cross section of the steel pad plate (6) is 5-10% larger than that of the rubber pad (7), and the thickness of the steel pad plate is 5-20 mm.
9. A method for assembling pier by using the assembled pier of any one of claims 1-8, comprising the steps of:
step (1): binding a reinforcement cage; for the bottom concrete segment, inserting longitudinal bars and SMA energy dissipation reinforcing steel bars into two ends of a reinforcing steel bar connector respectively, and sleeving PVC pipelines on the outer sides of the SMA energy dissipation reinforcing steel bars;
step (2): manufacturing a concrete segment template; respectively manufacturing each hollow concrete segment, a bearing platform and a capping beam template, wherein the bearing platform is a reserved hole channel for the prestressed reinforcement and the SMA energy dissipation reinforcement, and the diameter of the hole channel is 1.5 times of the diameter of the prestressed reinforcement and the diameter of the hole channel sleeved on the PVC pipeline;
and (3): pouring concrete and maintaining; respectively pouring each hollow concrete segment, a cover beam and a bearing platform, and maintaining according to the standard requirement; after the casting is finished, a part of the SMA energy-consuming reinforcing steel bars is outside the sections;
and (4): placing a bearing platform; the prestressed steel bars are penetrated and anchored in the hole channels of the bearing platform, then the steel base plate, the rubber pad and the steel base plate are sequentially placed, and the reserved hole channels are aligned when the prestressed steel bars are placed;
and (5): installing the bottom segment; inserting PVC pipelines which contain SMA energy dissipation steel bars and are extended outside the bottom sections into a steel backing plate, a rubber pad, the steel backing plate and a reserved pore channel of a bearing platform in sequence, and anchoring the tail ends of the SMA energy dissipation steel bars after inserting the tail ends into an anchoring device in the bearing platform;
and (6): assembling other sections; before assembly, the planes of the concrete segments are polished to be flat, a layer of cement mortar is smeared on the cross section to be leveled and play a role in bonding, and the concrete segments are sequentially placed above the previous concrete segment;
and (7): pre-stress tension; and (4) aligning the reserved hole in the center of the capping beam with the prestressed steel bar to penetrate through, tensioning and anchoring the prestressed steel bar at the pier top after placement is finished, and combining all the sections together to form the whole pier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110576974.4A CN113186812A (en) | 2021-05-26 | 2021-05-26 | Prestressed segment assembled pier with SMA energy dissipation reinforcing steel bars at bottom and assembling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110576974.4A CN113186812A (en) | 2021-05-26 | 2021-05-26 | Prestressed segment assembled pier with SMA energy dissipation reinforcing steel bars at bottom and assembling method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668368A (en) * | 2021-09-09 | 2021-11-19 | 石家庄铁道大学 | Plastic hinge area enlarged section assembled type swing pier and construction method thereof |
| CN113802597A (en) * | 2021-08-29 | 2021-12-17 | 北京工业大学 | Self-resetting assembly type pier column system with seismic isolation and reduction functions |
| CN114908661A (en) * | 2022-05-17 | 2022-08-16 | 华设设计集团股份有限公司 | Rubber energy-consuming self-resetting socket-and-spigot type pier connection structure and assembling method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409606A (en) * | 2011-07-29 | 2012-04-11 | 清华大学 | Self-resetting pier column structural system with built-in energy dissipation assembly and implementing method for self-resetting piper column structural system |
| CN105755952A (en) * | 2016-04-15 | 2016-07-13 | 柳州欧维姆机械股份有限公司 | Embedded elastic rubber bearing device and construction method of applying bearing device to connection between prefabricated concrete bridge pier and pile cap |
| CN205443914U (en) * | 2016-01-06 | 2016-08-10 | 上海应用技术学院 | Adopt shape memory alloy reinforcing bar to have prefabricated pin -connected panel pier of runback potential energy power |
| CN107035203A (en) * | 2017-06-07 | 2017-08-11 | 沈阳建筑大学 | A kind of SMA energy consumers prestressing without bondn system |
| CN109024247A (en) * | 2017-06-08 | 2018-12-18 | 广东工业大学 | A kind of the antidetonation bridge column structure system and implementation method of novel prefabricated disassembled reparation |
| CN110700082A (en) * | 2019-09-20 | 2020-01-17 | 重庆大学 | Column base node of SMA-ECC self-resetting circular steel tube restrained reinforced concrete pier |
| CN111119371A (en) * | 2020-01-07 | 2020-05-08 | 重庆大学 | Reinforced concrete shear wall structure capable of self-resetting |
| CN212404807U (en) * | 2020-07-28 | 2021-01-26 | 东南大学 | Segment pre-pressing assembly type concrete pier structure |
| CN112627016A (en) * | 2021-01-11 | 2021-04-09 | 深圳市天健(集团)股份有限公司 | Assembled pier with self-resetting and strong energy consumption and construction method thereof |
-
2021
- 2021-05-26 CN CN202110576974.4A patent/CN113186812A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409606A (en) * | 2011-07-29 | 2012-04-11 | 清华大学 | Self-resetting pier column structural system with built-in energy dissipation assembly and implementing method for self-resetting piper column structural system |
| CN205443914U (en) * | 2016-01-06 | 2016-08-10 | 上海应用技术学院 | Adopt shape memory alloy reinforcing bar to have prefabricated pin -connected panel pier of runback potential energy power |
| CN105755952A (en) * | 2016-04-15 | 2016-07-13 | 柳州欧维姆机械股份有限公司 | Embedded elastic rubber bearing device and construction method of applying bearing device to connection between prefabricated concrete bridge pier and pile cap |
| CN107035203A (en) * | 2017-06-07 | 2017-08-11 | 沈阳建筑大学 | A kind of SMA energy consumers prestressing without bondn system |
| CN109024247A (en) * | 2017-06-08 | 2018-12-18 | 广东工业大学 | A kind of the antidetonation bridge column structure system and implementation method of novel prefabricated disassembled reparation |
| CN110700082A (en) * | 2019-09-20 | 2020-01-17 | 重庆大学 | Column base node of SMA-ECC self-resetting circular steel tube restrained reinforced concrete pier |
| CN111119371A (en) * | 2020-01-07 | 2020-05-08 | 重庆大学 | Reinforced concrete shear wall structure capable of self-resetting |
| CN212404807U (en) * | 2020-07-28 | 2021-01-26 | 东南大学 | Segment pre-pressing assembly type concrete pier structure |
| CN112627016A (en) * | 2021-01-11 | 2021-04-09 | 深圳市天健(集团)股份有限公司 | Assembled pier with self-resetting and strong energy consumption and construction method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802597A (en) * | 2021-08-29 | 2021-12-17 | 北京工业大学 | Self-resetting assembly type pier column system with seismic isolation and reduction functions |
| CN113668368A (en) * | 2021-09-09 | 2021-11-19 | 石家庄铁道大学 | Plastic hinge area enlarged section assembled type swing pier and construction method thereof |
| CN114908661A (en) * | 2022-05-17 | 2022-08-16 | 华设设计集团股份有限公司 | Rubber energy-consuming self-resetting socket-and-spigot type pier connection structure and assembling method thereof |
| CN114908661B (en) * | 2022-05-17 | 2023-07-21 | 华设设计集团股份有限公司 | Rubber energy consumption self-resetting socket pier connection structure and assembly method thereof |
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Application publication date: 20210730 |