CN111005306A - Prefabricated assembled concrete-filled steel tube self-resetting pier with box-type earthquake damage replaceable components - Google Patents
Prefabricated assembled concrete-filled steel tube self-resetting pier with box-type earthquake damage replaceable components Download PDFInfo
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- CN111005306A CN111005306A CN201911229721.9A CN201911229721A CN111005306A CN 111005306 A CN111005306 A CN 111005306A CN 201911229721 A CN201911229721 A CN 201911229721A CN 111005306 A CN111005306 A CN 111005306A
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/268—Composite concrete-metal
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Abstract
The invention relates to a prefabricated assembled concrete filled steel tube self-resetting pier with a box-type earthquake damage replaceable component, which comprises a concrete bearing platform, an upper concrete filled steel tube prefabricated section, a bottom concrete filled steel tube prefabricated section, a box-type earthquake damage replaceable component, a post-tensioned prestressed rib and an energy consumption limiting device, wherein the upper concrete filled steel tube prefabricated section is arranged on the concrete bearing platform; the upper steel pipe concrete prefabricated segment, the bottom steel pipe concrete prefabricated segment and the concrete bearing platform are assembled into a whole through post-tensioned prestressed tendons, the prestressed tendons penetrate through a pier segment pore passage and a bearing platform pore passage, and the anchorage devices are respectively anchored at the bottom of the concrete bearing platform and the top of the pier; the box type shock damage replaceable component is formed by combining concrete filled with the shock damage replaceable component in a steel box outside the shock damage replaceable component; and two ends of the energy-consuming limiting reinforcing steel bar are respectively connected to the top surface of the concrete bearing platform and the outer steel tube of the bottom steel tube concrete prefabricated section. The invention also provides a construction method. The invention has the advantages of convenient replacement and lower cost.
Description
Technical Field
The invention relates to a prefabricated section assembled concrete-filled steel tube pier applicable to a middle-high intensity region, in particular to a post-earthquake quick repair technology, a prefabricated section assembling technology, an external prestressing technology and a damping and vibration isolation technology, and belongs to the field of bridge engineering.
Background
The bridge structure is possibly threatened by the action of an earthquake during service, and the bridge structure is used as a life line project for material transportation after the earthquake, so that the function of the bridge structure after the earthquake is ensured to have important practical significance and practical value. The bridge pier is used as a main bearing member and a lateral force resisting member of a bridge structure and plays a role in lifting weight in an earthquake-resistant system of the bridge structure. At present, traditional bottom concreties pier and dissipates seismic energy through forming the plastics hinge under the earthquake effect for great residual displacement and pier shaft damage appear in the pier after the earthquake, and this not only makes bridge structures be difficult to realize quick restoration after the earthquake, and great residual displacement and pier shaft damage simultaneously probably lead to bridge structures to lose the function of continuing being in service after the earthquake. In order to improve the post-earthquake service capacity and the repairability of a bridge structure, the engineering industry provides a 'dry joint' prefabricated assembled pier, the pier concentrates damage near a swinging interface under the earthquake action through the swinging action, and the residual displacement is reduced through prestressed tendons.
The bridge pier assembled by the steel pipe concrete prefabricated sections has the advantages of large lateral rigidity, capability of using the outer sleeved steel pipes as templates and the like, and is gradually favored by bridge engineers. However, the existing literature indicates that under the action of an earthquake, an outer steel pipe near a swing interface of a steel pipe concrete prefabricated segment assembled pier is early in yielding, concrete can be broken under a large lateral displacement angle of the pier, and a damaged part at the swing interface of the pier is difficult to repair, so that the steel pipe concrete prefabricated segment assembled pier is not beneficial to continuous service after the earthquake.
Because the 'dry joint' prefabricated assembled pier has poor energy dissipation capability, the earthquake displacement requirement is high, and the engineering field usually adopts a method of adding energy dissipation components to solve the problems. Although the additional energy dissipation member can increase the energy dissipation capability of the pier, the residual displacement of the pier and the damage to the pier body may be increased. Therefore, there is a need for an additional energy dissipation device that can satisfy the requirements of energy dissipation capability and seismic displacement response limit of a pier without increasing the residual displacement of the pier.
Patent application 2019110727759 provides a precast concrete filled steel tube from restoring to throne pier is assembled to prefabrication with the removable component of the loss of earthquake, and it is more to have the whole steel rate that contains of pier, and will establish the construction template in addition when pouring the removable component concrete of the loss of earthquake, gives the problem that the construction is inconvenient.
Disclosure of Invention
The invention aims to provide a prefabricated assembled concrete-filled steel tube self-resetting pier with a box-type shock damage replaceable component, which overcomes the defects that the pier body damage of the traditional prefabricated segment assembled concrete-filled steel tube pier under the earthquake excitation is difficult to repair and the influence of an energy consumption device on the residual displacement of the pier is large by utilizing the box-type shock damage replaceable component and an energy consumption limiting device. The bridge pier utilizes the box-type earthquake damage replaceable component to bear most of damage under earthquake excitation and protect the safety of the core area of the main structure of the bridge pier; the energy consumption limiting device only bears tension under the action of an earthquake, and the compression buckling of the energy consumption limiting device is effectively avoided. The method can not only realize rapid repair of the pier after the earthquake, but also reduce the earthquake displacement response of the pier and increase the energy consumption capability of the pier under the condition of not improving the residual displacement of the pier. The technical scheme is as follows:
the utility model provides a take box to shake prefabricated assembly steel pipe concrete of losing removable component from restoring to throne pier which characterized in that: comprises a concrete bearing platform, an upper steel pipe concrete prefabricated segment, a bottom steel pipe concrete prefabricated segment, a box type shock damage replaceable component, a post-tensioned prestressed tendon and an energy consumption limiting device, wherein,
the upper concrete filled steel tube prefabricated segment, the bottom concrete filled steel tube prefabricated segment and the concrete bearing platform are assembled into a whole through post-tensioned prestressed tendons, the prestressed tendons penetrate through a pier segment pore passage and a bearing platform pore passage, and the anchorage devices are respectively anchored at the bottom of the concrete bearing platform and the top of the pier; the box type shock damage replaceable component is formed by combining shock damage replaceable component concrete filled in a steel box outside the shock damage replaceable component, and the box type shock damage replaceable component is combined with a bottom steel pipe concrete prefabricated bridge pier segment into a whole through a connecting cover plate and a high-strength friction type bolt; the energy consumption limiting device comprises energy consumption limiting reinforcing steel bars, and two ends of each energy consumption limiting reinforcing steel bar are respectively connected to the outer steel tubes of the concrete-filled steel tube precast sections on the top surface and the bottom of the concrete bearing platform.
Preferably, the box-type earthquake damage replaceable component comprises at least two parts which are fixed in a cross section diameter reduction area at the bottom of the steel pipe concrete prefabricated pier segment, and an assembly joint of the box-type earthquake damage replaceable component is perpendicular to the transverse bridge direction. And a shear-resistant pin bolt is welded on the inner side of the outer steel shell of the outer steel box of the box-type shock damage replaceable component. The energy consumption limiting device further comprises an anchoring steel block, a screw cap and a connecting sleeve, the lower portion of the energy consumption limiting steel bar is connected with the embedded steel bar of the bearing platform through the connecting sleeve, the upper portion of the energy consumption limiting steel bar penetrates through an inner hole channel of the anchoring block and is fixed to the upper portion of the anchoring steel block through the screw cap, and the anchoring block is fixed to an outer steel pipe of the bottom steel pipe concrete prefabricated section.
The invention also provides a construction method of the precast assembled concrete filled steel tube self-resetting pier, which is characterized by comprising the following steps:
(1) calculating the size of a main structure according to the relevant specifications of the bridge structure and the actual engineering construction requirements; considering the requirement of pier damage control, the height of the box-type shock damage replaceable component cannot be too low, the height of the box-type shock damage replaceable component is 1/2-1/3 of the bottom section and is not smaller than the diameter of the cross section of a pier, and the thickness of the box-type shock damage replaceable component is 1/6-1/5 of the diameter of the cross section of the pier; the diameter of the energy consumption limiting steel bar is determined according to the seismic displacement limiting value requirement of the bridge pier;
(2) the field assembly construction is mainly divided into the following parts: firstly, anchoring an upper concrete-filled steel tube prefabricated section, a bottom concrete-filled steel tube prefabricated section and a concrete bearing platform through post-tensioned prestressed tendons; secondly, connecting the box-type shock damage replaceable component and the bottom concrete filled steel tube prefabricated section into a whole by using a high-strength friction type bolt and a connecting cover plate; and finally, connecting the lower parts of the energy consumption limiting steel bars with the embedded steel bars of the bearing platform by using the connecting sleeves, and fixing the upper parts of the energy consumption limiting steel bars on the upper parts of the anchoring steel blocks through nuts after penetrating through the inner pore channels of the anchoring steel blocks.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, according to the convenience of the block assembling construction of the prefabricated section assembling pier, the damage concentrated region of the prefabricated section assembling concrete filled steel tube pier under earthquake excitation is separated from the main structure, the safety of the main structure is ensured, and the box type shock damage replaceable component and the main structure are integrated by utilizing a bolt-cover plate connection mode, so that the connection mode is convenient for construction and is beneficial to realizing the quick repair of the pier after earthquake.
2. The pier can fully utilize the compression yield of the steel box outside the earthquake damage replaceable component to provide the energy dissipation capacity for the pier, and the box type earthquake damage replaceable component does not generate the reset resisting moment, so that the box type earthquake damage replaceable component does not increase the residual displacement of the pier while providing the energy dissipation capacity.
3. The energy consumption limiting device only bears tension under the action of an earthquake, so that the adverse effect of the compression buckling of the energy consumption limiting device on the residual displacement of the pier can be obviously reduced, and the effective energy consumption capability is provided for the pier while the restoration capability of the pier is ensured.
4. Compared with the 2019110727759 prefabricated assembled concrete filled steel tube self-resetting pier with the box-type earthquake damage replaceable component, the box-type earthquake damage replaceable component is formed by combining the concrete filled in the steel box outside the earthquake damage replaceable component, the steel box outside the earthquake damage replaceable component can be directly used as a construction template without detaching the template, and the construction efficiency is further improved; and under the same steel content, the ability that removable component of box formula shatter protected the major structure is more excellent.
5. Compared with the traditional precast segment assembled concrete-filled steel tube bridge pier, the bridge pier has approximately the same construction amount, has better energy consumption capability and ductility performance under the same steel content, and is suitable for popularization in middle and high-intensity areas.
Drawings
Fig. 1 is a vertical cross-sectional view of a bridge pier in the apparatus of the present invention.
Fig. 2 is a vertical view of a bridge pier in the apparatus of the present invention.
Fig. 3 is a cross-sectional view a-a of fig. 1 and 2.
Fig. 4 is a cross-sectional view B-B of fig. 1 and 2.
FIG. 5 is a schematic view of the box-type shock replaceable member assembled with the main body structure.
FIG. 6 is a schematic structural view of an outer steel box of the shock replaceable component.
FIG. 7 is a top view of the box-type shock replaceable member.
Fig. 8 is a schematic view of the energy consumption limiting device.
Fig. 9 shows hysteresis curve simulation results of two different types of piers.
Fig. 10 is a stress cloud picture of a bottom swing interface of two different types of piers, the left picture is a prefabricated assembled concrete-filled steel tube self-resetting pier with box-type shock loss replaceable components, and the right picture is a prefabricated section assembled concrete-filled steel tube self-resetting pier structure with shock loss replaceable components, namely ' patent application 2019110727759 ' P05T08-NEW '.
Fig. 11 is a cloud picture of concrete damage at a swing interface at the bottom of two different types of piers, the left picture is a prefabricated assembled concrete-filled steel tube self-resetting pier with box-type shock damage replaceable components, and the right picture is a prefabricated segment assembled concrete-filled steel tube self-resetting pier structure with shock damage replaceable components, namely ' patent application 2019110727759 ' P05T08-NEW '.
The reference numbers in the figures illustrate:
1-precast concrete-filled steel tube segment concrete at the bottom, 2-precast concrete-filled steel tube segment outer steel tube, 3-pier segment pore canal, 4-post-tensioned prestressed bars, 5-earthquake damage replaceable component outer steel box, 6-shear pin bolt, 7-earthquake damage replaceable component concrete, 8-anchoring steel block, 9-energy-consuming limiting steel bar, 10-connecting sleeve, 11-bearing platform embedded steel bar, 12-concrete bearing platform, 13-anchor, 14-nut, 15-connecting cover plate, 16-high-strength friction type bolt, 17-bearing platform pore canal, 18-precast concrete-filled steel tube segment concrete at the upper part, 19-precast concrete-filled steel tube segment outer steel tube at the upper part and 20-concrete pouring hole.
Detailed Description
The invention is further illustrated by the following detailed description in conjunction with the drawings in which:
the seismic displacement limiting device is characterized in that the seismic vulnerable part is separated from the main body structure to ensure the integrity of a pier main body under seismic excitation, and the seismic displacement response of the pier is limited by the energy consumption limiting device, the concrete detail of the seismic displacement limiting device is shown in figures 1-6, and the seismic displacement limiting device mainly comprises a bottom steel pipe concrete prefabricated section concrete 1, a bottom steel pipe concrete prefabricated section outer steel pipe 2, a pier section pore passage 3, a post-tensioned prestressed rib 4, an earthquake damage replaceable component outer steel box 5, a shear pin 6, an earthquake damage replaceable component concrete 7, an anchoring steel block 8, an energy consumption limiting steel bar 9, a connecting sleeve 10, a bearing platform embedded steel bar 11, a concrete bearing platform 12, an anchorage device 13, a nut 14, a connecting cover plate 15, a high-strength friction type bolt 16, a bearing platform pore passage 17, an upper steel pipe concrete prefabricated section concrete 18 and an upper steel pipe concrete prefabricated section outer steel pipe 19.
When the bridge structure is specifically designed and used, the size of the main structure is calculated according to the relevant specifications of the bridge structure and the actual engineering construction requirements; the height of the box-type shock damage replaceable component is not smaller than 1/2 of the height of the bottom section and the minimum value of the diameter of the cross section of the pier, and the thickness of the box-type shock damage replaceable component is 1/6-1/5 of the diameter of the cross section of the pier; the diameter of the energy consumption limiting steel bar can be determined according to the seismic displacement limiting value requirement of the bridge pier; the stress state of the reduced diameter part of the cross section at the bottom of the steel pipe concrete prefabricated pier segment in the area of the bottom section of the pier should meet the relevant requirements of the bridge structure in the normal use limit state, and the integral stress characteristic of the pier should meet the seismic standard requirements of the existing bridge structure.
The steel pipe concrete prefabricated segment 2 at the bottom of the pier, the steel pipe concrete prefabricated segment outer steel pipe 19 at the upper part and the external steel box 5 of the shock loss replaceable component can be used as partial construction templates, so that the concrete pouring construction is convenient, and the prestressed pore channel 3 is required to be reserved when the bottom steel pipe concrete prefabricated segment concrete 1 and the upper steel pipe concrete prefabricated segment concrete 18 are poured; the concrete bearing platform 12 can be prefabricated in a factory through traditional formwork erecting, steel bar binding and concrete pouring, a bearing platform pore passage 12 and an anchoring area need to be reserved when the concrete bearing platform 12 is poured, the diameter of the bearing platform embedded steel bar 11 is not smaller than the diameter of the energy consumption limiting steel bar 9, and the anchoring length of the bearing platform embedded steel bar 11 meets relevant requirements in concrete structure design specifications (GB 50010-2010).
The field assembly construction of the invention is mainly divided into the following parts: firstly, placing each steel pipe concrete prefabricated segment on a concrete bearing platform 12 in sequence, and applying prestress by using a post-tensioned prestressed rib 4 to enable the upper steel pipe concrete prefabricated segment and the bottom steel pipe concrete prefabricated segment to be integrally assembled with the concrete bearing platform 12; secondly, as shown in fig. 5, the box-type earthquake damage replaceable component and the steel pipe concrete prefabricated pier segment are connected into a whole by using a high-strength friction type bolt 16 and a connecting cover plate 15; and finally, connecting the lower parts of the energy consumption limiting steel bars 9 with the bearing platform embedded steel bars 11 by using the connecting sleeves 10, and fixing the upper parts of the energy consumption limiting steel bars 9 on the upper parts of the anchoring steel blocks 8 through nuts 14 after penetrating through the inner pore channels of the anchoring steel blocks 8.
By reasonably designing the prestress degree of the pier and the consumption of energy consumption limiting reinforcing steel bars in the early stage, the interface between the bottom of the pier and the top of the bearing platform is not opened under the conditions of small earthquake and normal use of the pier; and under the action of heavy earthquake, the interface between the bottom of the pier and the top of the bearing platform is opened, and the consumption of the pier energy consumption limiting reinforcing steel bars can be adjusted according to the requirement of the seismic displacement response limit value under the action of heavy earthquake until the seismic displacement response and the energy consumption capability of the pier meet the requirements of relevant specifications. The box type earthquake damage replaceable component mainly bears the vertical load under the earthquake action of the pier, damages are concentrated on the box type earthquake damage replaceable component, the main structure of the steel pipe concrete pier is guaranteed to be basically intact, the box type earthquake damage replaceable component and the energy consumption limiting device are convenient to replace quickly, the bridge structure can be repaired quickly after an earthquake, and a favorable guarantee is provided for emergency rescue and disaster relief after the earthquake.
"patent application 2019110727759 takes the prefabricated steel core concrete of assembling of removable component of box earthquake to decrease from restoring to the throne pier" compares "the prefabricated segment that has the removable component of earthquake to assemble the improvement of steel core concrete from restoring to the throne pier structure" and mainly embodies in following two aspects:
the replaceable earthquake damage component of the self-resetting pier structure with the prefabricated sections and the assembled concrete filled steel tube has the advantages that a template needs to be additionally arranged, and construction is inconvenient; and the removable component of box earthquake damage of "patent application 2019110727759 takes the prefabricated assembly steel pipe concrete of removable component of box earthquake damage from restoring to the throne pier" alright regard as construction template, be favorable to further improving construction speed and construction precision.
2. The capability of protecting the main structure of the 'prefabricated assembled concrete-filled steel tube self-resetting pier with box type earthquake damage replaceable components' under the condition of approximately the same steel content is superior to the 'prefabricated section assembled concrete-filled steel tube self-resetting pier structure with earthquake damage replaceable components'.
(1) Firstly, simulating the pseudo-static hysteresis performance of the following two bridge piers with approximately the same steel content under the same load condition by ABAQUS finite element analysis software.
Fig. 9 shows the hysteresis curves of the two, as can be seen from the hysteresis curves: the horizontal rigidity and the lateral bearing capacity of the two piers are basically not greatly different; compare in the removable component of loss of earthquake, the removable component of box loss of earthquake has weakened outer steel skin thickness, nevertheless does not influence the holistic anti-seismic performance of pier.
(3) And secondly, analyzing the capability of the two bridge piers for protecting the main body structure. As shown in fig. 10 and 11, the left drawing is a prefabricated assembled concrete-filled steel tube self-restoration pier with box-type earthquake damage replaceable components, P05T06-box-NEW, the right drawing is a prefabricated section assembled concrete-filled steel tube self-restoration pier structure with earthquake damage replaceable components, P05T08-NEW, in patent application 2019110727759, cloud pictures of a swing interface of the two pier structures under the action of lateral force are analyzed, and it can be known that the damage of the main body structure of the box-type earthquake damage replaceable components is smaller than that of the earthquake damage replaceable components in patent application 2019110727759, and the stress of the swing interface of the pier with the box-type earthquake damage replaceable components is more concentrated on the replaceable components; this is mainly due to the fact that at the same steel content, the cross-section of the steel box outside the box-type shock replaceable element is more extended, so that the rigidity of the box-type shock replaceable element is greater than that of the shock replaceable element of patent application 2019110727759.
It should be noted that the above-mentioned description of the embodiments is only for the purpose of facilitating the understanding and application of the working principle of the present invention by those skilled in the art, and it should not be construed as limiting the present invention itself. Accordingly, it is intended that all such modifications and enhancements which fall within the spirit and scope of the present invention as defined in the appended claims be considered as within the scope of the present invention.
Claims (6)
1. The utility model provides a take box to shake prefabricated assembly steel pipe concrete of losing removable component from restoring to throne pier which characterized in that: comprises a concrete bearing platform, an upper steel pipe concrete prefabricated segment, a bottom steel pipe concrete prefabricated segment, a box type shock damage replaceable component, a post-tensioned prestressed tendon and an energy consumption limiting device, wherein,
the upper concrete filled steel tube prefabricated segment, the bottom concrete filled steel tube prefabricated segment and the concrete bearing platform are assembled into a whole through post-tensioned prestressed tendons, the prestressed tendons penetrate through a pier segment pore passage and a bearing platform pore passage, and the anchorage devices are respectively anchored at the bottom of the concrete bearing platform and the top of the pier; the box type shock damage replaceable component is formed by combining shock damage replaceable component concrete filled in a steel box outside the shock damage replaceable component, and the box type shock damage replaceable component is combined with a bottom steel pipe concrete prefabricated bridge pier segment into a whole through a connecting cover plate and a high-strength friction type bolt; the energy consumption limiting device comprises energy consumption limiting reinforcing steel bars, and two ends of each energy consumption limiting reinforcing steel bar are respectively connected to the outer steel tubes of the concrete-filled steel tube precast sections on the top surface and the bottom of the concrete bearing platform.
2. The precast assembled concrete-filled steel tube self-resetting pier according to claim 1, wherein the box-type shock damage replaceable component comprises at least two pieces, the two pieces are fixed on the area with the reduced diameter of the cross section at the bottom of the section of the precast concrete-filled steel tube pier, and an assembled joint of the two pieces is perpendicular to the transverse bridge direction.
3. The precast assembled concrete filled steel tube self-restoration pier according to claim 1, wherein a shear pin is welded to the inner side of the outer steel shell of the earthquake damage replaceable member outer steel box.
4. The precast assembled concrete-filled steel tube self-resetting pier according to claim 1, wherein the energy consumption limiting device further comprises an anchoring steel block, a screw cap and a connecting sleeve, the lower part of the energy consumption limiting steel bar is connected with the embedded steel bar of the bearing platform through the connecting sleeve, the upper part of the energy consumption limiting steel bar penetrates through an inner hole channel of the anchoring block and is fixed on the upper part of the anchoring steel block through the screw cap, and the anchoring block is fixed on an outer steel tube of the precast concrete-filled steel tube section at the bottom.
5. The construction method of the precast assembled concrete filled steel tube self-restoration pier as claimed in claim 1, comprising the following steps
(1) Calculating the size of a main structure according to the relevant specifications of the bridge structure and the actual engineering construction requirements; considering the requirement of pier damage control, the height of the box-type shock damage replaceable component cannot be too low, the height of the box-type shock damage replaceable component is 1/2-1/3 of the bottom section and is not smaller than the diameter of the cross section of a pier, and the thickness of the box-type shock damage replaceable component is 1/6-1/5 of the diameter of the cross section of the pier; the diameter of the energy consumption limiting steel bar is determined according to the seismic displacement limiting value requirement of the bridge pier;
(2) the field assembly construction is mainly divided into the following parts: firstly, anchoring an upper concrete-filled steel tube prefabricated section, a bottom concrete-filled steel tube prefabricated section and a concrete bearing platform through post-tensioned prestressed tendons; secondly, connecting the box-type shock damage replaceable component and the bottom concrete filled steel tube prefabricated section into a whole by using a high-strength friction type bolt and a connecting cover plate; and finally, connecting the lower parts of the energy consumption limiting steel bars with the embedded steel bars of the bearing platform by using the connecting sleeves, and fixing the upper parts of the energy consumption limiting steel bars on the upper parts of the anchoring steel blocks through nuts after penetrating through the inner pore channels of the anchoring steel blocks.
6. The construction method according to claim 5, wherein the stress state of the area with the reduced diameter of the cross section at the bottom of the steel tube concrete prefabricated pier segment in the area of the bottom section of the pier meets the relevant requirements of the bridge structure in the limit state of normal use, and the stress characteristic of the whole pier meets the seismic standard requirement of the bridge structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911229721.9A CN111005306A (en) | 2019-12-04 | 2019-12-04 | Prefabricated assembled concrete-filled steel tube self-resetting pier with box-type earthquake damage replaceable components |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592422A (en) * | 2022-03-15 | 2022-06-07 | 广西交科集团有限公司 | Self-resetting detachable and replaceable assembled anti-seismic pier and construction method thereof |
| JP7508495B2 (en) | 2022-01-21 | 2024-07-01 | 大日本ダイヤコンサルタント株式会社 | Damage Control Struts |
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2019
- 2019-12-04 CN CN201911229721.9A patent/CN111005306A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7508495B2 (en) | 2022-01-21 | 2024-07-01 | 大日本ダイヤコンサルタント株式会社 | Damage Control Struts |
| CN114592422A (en) * | 2022-03-15 | 2022-06-07 | 广西交科集团有限公司 | Self-resetting detachable and replaceable assembled anti-seismic pier and construction method thereof |
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