CN114411531A - Anti-seismic device and anti-seismic structure for bridge - Google Patents
Anti-seismic device and anti-seismic structure for bridge Download PDFInfo
- Publication number
- CN114411531A CN114411531A CN202210094964.1A CN202210094964A CN114411531A CN 114411531 A CN114411531 A CN 114411531A CN 202210094964 A CN202210094964 A CN 202210094964A CN 114411531 A CN114411531 A CN 114411531A
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- piece
- buffer
- connecting piece
- seismic
- seismic device
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- 239000000872 buffer Substances 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 14
- 239000004567 concrete Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 5
- 239000006173 Good's buffer Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
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Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides an anti-seismic device for a bridge, which comprises a mounting seat, a connecting piece and a connecting seat; the mount pad includes installation end and link, the connecting seat includes bolster and buffer board. The connecting piece is of a hollow columnar structure, the connecting end and the buffer piece are connected in a sleeved mode through the connecting piece, and the shock-resistant effect is achieved by grouting in the inner cavity of the connecting piece and matching with the buffer piece; one end of the buffer piece is a telescopic rod, and the telescopic rod can be connected with the buffer board in a rotating mode. The invention also provides an anti-seismic structure for the bridge, the anti-seismic device is arranged between the main beam and the cross beam, so that the cross beam and the main beam can be prevented from rigidly colliding, and meanwhile, a buffer part of the anti-seismic device adopts a liquid damper, so that the anti-seismic structure has a good buffer effect and can better realize the anti-seismic of the bridge.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to an anti-seismic device and an anti-seismic structure for a bridge.
Background
The bridge is an important link in transportation, and in order to meet the demand of high-speed development of society, save land resources and protect natural environment, the land bridge buildings such as viaducts, overpasses and the like are more and more widely applied to the lives of people. The number of the bridges built and constructed in China is considerable at present, along with the increasing construction amount of the bridges, the protection and reinforcement work of the bridges is very important, especially, a plurality of areas in China are located in earthquake-prone areas, and the damage of the bridge caused by the earthquake is huge, so that the economic loss is huge.
In order to reduce the damage of an earthquake to a bridge, technicians take measures that reinforced concrete stop blocks are arranged on two sides of the top of a pier capping beam so as to limit the large displacement of a beam body in the transverse direction of the bridge, but the defects of the method are obvious, the rigid collision between the beam body and the stop blocks easily causes local damage, the shake generated by the earthquake cannot be effectively buffered when the earthquake comes, and meanwhile, the installation and the disassembly between the beam body and the stop blocks are very complicated, so that the method is not beneficial to rapid construction and later maintenance.
Disclosure of Invention
The invention aims to provide an anti-seismic device and an anti-seismic structure for a bridge, and the specific technical scheme is as follows:
an anti-seismic device for a bridge comprises a mounting seat, a connecting piece and a connecting seat; the mount pad includes installation end and link, the connecting seat includes bolster and buffer board, the installation end with the equal detachable installation in the concrete plane of buffer board.
Specifically, the connecting piece is of a hollow columnar structure, and the connecting end and the buffer piece are sleeved and connected by the connecting piece; the joint of the connecting piece and the buffer piece is provided with an annular flange, the buffer piece is of a columnar structure, and a partition plate is arranged on the cylindrical surface of the inner cavity of the connecting piece; the partition plate divides the inner cavity of the connecting piece into two parts which are not communicated; one end of the buffer piece is a telescopic rod, and the telescopic rod is rotatably connected with the buffer plate; the surface of the connecting piece is provided with holes.
Specifically, the mounting end comprises a mounting base and a supporting block; the mounting base is arranged on a concrete plane, and the supporting block is fixed on the mounting base.
Preferably, the connecting end comprises a support column; one end of the supporting column is fixedly connected to one surface of the supporting block, which is far away from the mounting base; the support column with the connecting piece is kept away from the one end opening matching of bolster and is formed interference fit's joint structure.
Preferably, the connecting end further comprises a thin rod, and the thin rod is vertically arranged on the end face of the other end of the supporting column.
Preferably, the central line of the support rod, the central line of the thin rod, the central line of the connecting piece and the central line of the buffer piece are all located on the same straight line.
Preferably, in the cavity of the connecting piece, a plurality of positioning rods are vertically arranged on the cylindrical surface of the buffer piece; the length of the positioning rod is not more than the distance between the cylindrical surface of the buffer piece and the inner wall of the connecting piece.
Preferably, the annular rib, the partition plate and the contact surface between the mounting seat and the connecting piece are provided with sealing rings; the sealing ring is made of rubber.
Preferably, the surface of the connecting piece is provided with two to four grouting holes; the grouting hole is positioned between the slender rod and the buffer piece.
Preferably, the buffer member is a liquid damper, and the buffer plate is a damping plate.
The invention also provides an anti-seismic structure for the bridge, which comprises the capping beam, the main beam and the anti-seismic device; the upper surface of the bent cap is provided with a mounting bracket, and the main beam is mounted on the mounting bracket; the anti-seismic device is arranged between the cover beam and the main beam.
The technical scheme of the invention has the following beneficial effects:
the invention provides an anti-seismic device for a bridge, wherein a mounting seat, a connecting piece and a connecting seat are detachably connected in a sleeved mode, and clamping structures are respectively arranged between the mounting seat and the connecting piece and between the connecting seat and the connecting piece to realize fixation of the mounting seat, the connecting piece and the connecting piece. The connecting piece is internally provided with a cavity, and the anti-seismic device is installed by grouting into the cavity to achieve a better anti-seismic effect.
According to the invention, the partition plate can effectively prevent the slurry from flowing into the telescopic rod to influence the normal movement of the telescopic rod, and the stability of the anti-seismic device in the use process is ensured.
The buffer piece is rotatably connected with the buffer plate, so that a multi-angle buffer effect is realized, and adverse effects caused by vibration are effectively resisted.
According to the invention, the thin rod and the positioning rod are arranged in the inner cavity of the connecting piece, so that a better anti-seismic effect can be achieved after grouting, and the anti-seismic device after grouting can be matched with the buffer piece to better achieve bridge anti-seismic.
In addition, the invention further provides an anti-seismic structure for the bridge, and the anti-seismic structure improves the anti-seismic capacity of the main beam by arranging the cross beam. The anti-seismic device is arranged between the main beam and the cross beam to achieve a better anti-seismic effect.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the construction of the seismic isolation apparatus of the present invention;
FIG. 2 is a schematic view of the structure of the mounting base of the present invention;
FIG. 3 is a schematic view of the structure of the connection table and the connection member according to the present invention (assembled state);
FIG. 4 is a schematic view of the seismic structure of example 2 of the invention;
fig. 5 is a schematic view of the earthquake-resistant structure of embodiment 3 of the present invention.
The device comprises a mounting seat 1, a mounting base 1-1, a supporting block 1-2, a positioning ring 1-2-1, a supporting column 1-3, a thin rod 1-4, a connecting piece 2, an annular flange 2-1, a grouting hole 2-2, an annular groove 2-3, a connecting seat 3-1, a buffering piece 3-1, a partition plate 3-1-1, a positioning rod 3-1-2, a buffer plate 3-2, a capping beam 4-1, a mounting bracket 4-1, a fixing beam 4-2 and a main beam 5.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1:
the embodiment provides an anti-seismic device for a bridge, and as shown in fig. 1, the anti-seismic device comprises a mounting seat 1, a connecting piece 2 and a connecting seat 3; the mounting seat 1 comprises a mounting end and a connecting end, the connecting seat comprises a buffer piece 3-1 and a buffer plate 3-2, and the mounting end and the buffer plate 3-2 are detachably mounted on a concrete plane.
Specifically, the connecting piece 2 is a hollow columnar structure, and the connecting piece 2 is sleeved and connected with the connecting end and the buffer piece 3-1; an annular flange 2-1 is arranged at the joint of the connecting piece 2 and the buffer piece 3-1, the buffer piece 3-1 is of a columnar structure, and a partition plate 3-1-1 is arranged on the cylindrical surface of the inner cavity of the connecting piece 2; the partition plate 3-1-1 divides the inner cavity of the connecting piece 2 into two parts which are not communicated; one end of the buffer piece 3-1 is a telescopic rod, and the telescopic rod is rotatably connected with the buffer plate 3-2; the surface of the connecting piece 2 is provided with holes.
It should be noted that, in the present embodiment, the cavity of the connecting member 2 needs to be grouted during the use process, and the partition plate 3-1-1 can prevent the grout from flowing to the telescopic rod to damage the buffer member 3-1.
Preferably, as shown in fig. 2, the mounting end includes a mounting base 1-1 and a support block 1-2; the mounting base 1-1 is arranged on a concrete plane, and the supporting block 1-2 is fixed on the mounting base 1-1.
Preferably, the connecting end comprises supporting columns 1-3; one end of the supporting column 1-3 is fixedly connected to one surface, far away from the mounting base 1-1, of the supporting block 1-2; the supporting column 1-3 and the connecting piece 2 are matched with an opening at one end far away from the buffer piece 3-1 to form a clamping structure in interference fit. The preferred snap-fit arrangement of this embodiment is a mating formation of a sealing ring disposed around the support post and an annular groove disposed on the connector 2.
Preferably, the connecting end further comprises a thin rod 1-4, and the thin rod 1-4 is vertically arranged on the end face of the other end of the supporting column 1-2.
Preferably, the central line of the support rod 1-3, the central line of the thin rod 1-4, the central line of the connecting piece 2 and the central line of the buffer piece 3-1 are all located on the same straight line. The shape of the connecting piece 2 is preferably a round tube in the present embodiment, and the supporting columns 1-3 and the thin rods 1-4 are both cylindrical structures, and the diameter of the thin rods is not more than half of the diameter of the supporting columns.
Preferably, as shown in fig. 3, in the cavity of the connecting member 2, a plurality of positioning rods 3-1-2 are vertically arranged on the cylindrical surface of the buffer member 3-1; the length of the positioning rod 3-1-2 does not exceed the distance between the cylindrical surface of the buffer piece 3-1 and the inner wall of the connecting piece 2.
Preferably, sealing rings are arranged on the contact surfaces of the annular flange 2-1, the partition plate 3-1-1 and the mounting seat 1 and the connecting piece 2; the sealing ring is made of rubber.
Preferably, grouting holes 2-2 are formed in the surface of the connecting piece 2, and the number of the grouting holes 2-2 is two to four; the grouting hole 2-2 is positioned between the thin rod 1-4 and the buffer piece 3-1. 9. An anti-seismic device according to claim 1, wherein said buffer member 3-1 is a liquid damper and said buffer plate 3-2 is a damping plate.
The specific use of this example is as follows:
first, the mounting bases 1-1 are fixed to a first concrete surface by anchor bolts or expansion bolts.
Then, the damper is inserted from one end port of the connecting piece 2, the front end of the damper and the telescopic rod are ensured to penetrate through the annular flange 2-1 and extend out of the other end port of the connecting piece 2, then the damping plate is attached to the second concrete surface, one side surface of the damping plate is movably connected with the telescopic rod of the damper through a hinge structure, one end of the connecting piece 2 is sleeved on the supporting column, and the sealing ring is ensured to be inserted into the annular groove to form a sealing structure.
And finally, injecting concrete slurry into the connecting piece 2 through the grouting hole, wherein the inner cavity of the connecting piece 2 is filled with the concrete slurry, and the concrete slurry can push the partition plate and the damper to be close to the annular flange in the process until the partition plate is tightly attached to the annular flange.
This embodiment provides an antidetonation device for bridge, the antidetonation device passes through can dismantle the cover between mount pad, connecting piece and the connecting seat and establish the formula and connect, set up joint structure respectively between mount pad and the connecting piece and between connecting seat and the connecting piece and realize three's fixed. The connecting piece is internally provided with a cavity, and the anti-seismic device is installed by grouting into the cavity to achieve a better anti-seismic effect. In addition, locating lever and pin can play the effect that improves device stability after the slip casting.
Example 2:
the present embodiment proposes a lateral seismic structure for a bridge.
A lateral earthquake-resistant structure for a bridge, as shown in fig. 4, comprises a capping beam 4, a main beam 5 and the earthquake-resistant device of embodiment 1; the upper surface of the bent cap is provided with a mounting bracket 4-1, a main beam 5 is arranged above the bent cap 4, and the main beam 5 is mounted on the mounting bracket 4-1; fixing beams 4-2 are respectively and fixedly installed on two sides of the upper surface of the bent cap 4 in the width direction around the main beam 5, and the fixing beams 4-2 are arranged on two sides of the main beam 5; the anti-seismic device is arranged between the fixed beam 4-2 and the main beam 5 or between the cover beam 4 and the main beam 5.
The embodiment provides a transverse anti-seismic structure for a bridge, and the transverse anti-seismic structure for the main beam 5 is formed by arranging fixed beams 4-2 at two sides of the main beam 5 and arranging the anti-seismic devices between the fixed beams 4-2 and the main beam 5. The transverse anti-seismic structure can effectively resist transverse vibration and improve the stability of the bridge.
Example 3:
the present embodiment proposes a longitudinal seismic structure for a bridge.
A longitudinal seismic structure for a bridge, as shown in fig. 5, comprising a capping beam 4, a main beam 5 and the seismic device of embodiment 1; wherein, the upper surface of the bent cap is provided with a mounting bracket 4-1, and the main beam 5 is arranged on the mounting bracket 4-1; the anti-seismic device is longitudinally arranged between the bent cap 4 and the main beam 5.
The present embodiment proposes a longitudinal seismic structure for a bridge, which is formed by arranging the seismic device longitudinally between a capping beam 4 and the main beam 5. The longitudinal anti-seismic structure can effectively resist longitudinal vibration and improve the stability of the bridge.
Further, when the anti-seismic structure in embodiment 2 or embodiment 3 is damaged, a worker can detach the damping plate from the main beam 5, pull out the supporting columns 1 to 3 from the connecting piece 2, detach the mounting base 1 and the connecting piece 2, replace the damping plate according to the damage condition of the device, and can assist the pulling out of the supporting columns 1 to 3 by knocking the outer surfaces of the connecting piece 2 in the detaching process.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An anti-seismic device for a bridge is characterized by comprising a mounting seat (1), a connecting piece (2) and a connecting seat (3); the mounting seat (1) comprises a mounting end and a connecting end, the connecting seat comprises a buffer piece (3-1) and a buffer plate (3-2), and the mounting end and the buffer plate (3-2) are detachably mounted on a concrete plane;
the connecting piece (2) is of a hollow columnar structure, and the connecting end and the buffer piece (3-1) are sleeved and connected with the connecting piece (2); an annular flange (2-1) is arranged at the joint of the connecting piece (2) and the buffer piece (3-1), the buffer piece (3-1) is of a columnar structure, and a partition plate (3-1-1) is arranged on the cylindrical surface of the inner cavity of the connecting piece (2); the partition plate (3-1-1) divides the inner cavity of the connecting piece (2) into two parts which are not communicated; one end of the buffer piece (3-1) is a telescopic rod, and the telescopic rod is rotatably connected with the buffer plate (3-2); the surface of the connecting piece (2) is provided with holes.
2. An anti-seismic device according to claim 1, characterized in that said mounting end comprises a mounting base (1-1) and a support block (1-2); the mounting base (1-1) is arranged on a concrete plane, and the supporting block (1-2) is fixed on the mounting base (1-1).
3. An anti-seismic device according to claim 2, characterized in that said connection end comprises a support column (1-3); one end of the supporting column (1-3) is fixedly connected to one surface, far away from the mounting base (1-1), of the supporting block (1-2); the supporting column (1-3) and the connecting piece (2) are matched with an opening at one end far away from the buffer piece (3-1) to form a clamping structure in interference fit.
4. An earthquake-resistant arrangement according to claim 3, characterised in that the connecting end further comprises thin rods (1-4), which thin rods (1-4) are arranged vertically on the end faces of the other ends of the supporting columns (1-2).
5. An earthquake-resistant arrangement according to claim 4, characterised in that the centre lines of the supporting rods (1-3), the thin rods (1-4), the connecting piece (2) and the cushioning piece (3-1) are all located on the same line.
6. An earthquake-resistant device according to claim 5, characterized in that in the cavity of the connecting piece (2), a plurality of positioning rods (3-1-2) are vertically arranged on the cylindrical surface of the buffer piece (3-1); the length of the positioning rod (3-1-2) does not exceed the distance between the cylindrical surface of the buffer piece (3-1) and the inner wall of the connecting piece (2).
7. Anti-seismic device according to claim 1, characterized in that sealing rings are provided on the annular rib (2-1), the partition (3-1-1) and the contact surfaces of the mounting seat (1) and the connection piece (2); the sealing ring is made of rubber.
8. The anti-seismic device according to claim 1, characterized in that grouting holes (2-2) are formed in the surface of the connecting piece (2), and the number of the grouting holes (2-2) is two to four; the grouting hole (2-2) is positioned between the thin rod (1-4) and the buffer piece (3-1).
9. An anti-seismic device according to claim 1, characterized in that said buffer (3-1) is a liquid damper and said buffer plate (3-2) is a damping plate.
10. An earthquake-resistant structure for bridges, characterised by comprising capping beams (4), main beams (5) and earthquake-resistant means according to any one of claims 1 to 9; the upper surface of the bent cap is provided with a mounting bracket (4-1), and the main beam (5) is mounted on the mounting bracket (4-1); the anti-seismic device is arranged between the cover beam (4) and the main beam (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210094964.1A CN114411531B (en) | 2022-01-26 | 2022-01-26 | Anti-seismic device and anti-seismic structure for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210094964.1A CN114411531B (en) | 2022-01-26 | 2022-01-26 | Anti-seismic device and anti-seismic structure for bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114411531A true CN114411531A (en) | 2022-04-29 |
| CN114411531B CN114411531B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210094964.1A Active CN114411531B (en) | 2022-01-26 | 2022-01-26 | Anti-seismic device and anti-seismic structure for bridge |
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| CN (1) | CN114411531B (en) |
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| CN203603042U (en) * | 2013-12-02 | 2014-05-21 | 中铁第一勘察设计院集团有限公司 | Function separation type large-span continuous beam isolation bearing |
| CN104831870A (en) * | 2015-04-20 | 2015-08-12 | 北京工业大学 | Viscous damping steel connector |
| JP2015212489A (en) * | 2014-05-02 | 2015-11-26 | 首都高速道路株式会社 | Damper for use in earthquake-resistant structure of bridge and recovery method of earthquake-resistant structure |
| WO2019080599A1 (en) * | 2017-10-23 | 2019-05-02 | 株洲时代新材料科技股份有限公司 | Anti-shock device |
| CN110541351A (en) * | 2019-09-30 | 2019-12-06 | 北方工业大学 | anti-seismic device and bridge |
| CN111441241A (en) * | 2020-04-13 | 2020-07-24 | 南昌大学 | Bridge anti-seismic damper structure with rotational friction energy consumption |
| CN112853946A (en) * | 2021-03-18 | 2021-05-28 | 长安大学 | Grouting sleeve, grouting sleeve connected assembled pier and construction method thereof |
| CN214530165U (en) * | 2021-03-13 | 2021-10-29 | 王塬 | Anti-seismic device for highway bridge |
| CN214573416U (en) * | 2021-01-22 | 2021-11-02 | 广州珠江黄埔大桥建设有限公司 | Damping type elastic support disposal device for cracking disease of steel box girder inclined web member |
-
2022
- 2022-01-26 CN CN202210094964.1A patent/CN114411531B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203603042U (en) * | 2013-12-02 | 2014-05-21 | 中铁第一勘察设计院集团有限公司 | Function separation type large-span continuous beam isolation bearing |
| JP2015212489A (en) * | 2014-05-02 | 2015-11-26 | 首都高速道路株式会社 | Damper for use in earthquake-resistant structure of bridge and recovery method of earthquake-resistant structure |
| CN104831870A (en) * | 2015-04-20 | 2015-08-12 | 北京工业大学 | Viscous damping steel connector |
| WO2019080599A1 (en) * | 2017-10-23 | 2019-05-02 | 株洲时代新材料科技股份有限公司 | Anti-shock device |
| CN110541351A (en) * | 2019-09-30 | 2019-12-06 | 北方工业大学 | anti-seismic device and bridge |
| CN111441241A (en) * | 2020-04-13 | 2020-07-24 | 南昌大学 | Bridge anti-seismic damper structure with rotational friction energy consumption |
| CN214573416U (en) * | 2021-01-22 | 2021-11-02 | 广州珠江黄埔大桥建设有限公司 | Damping type elastic support disposal device for cracking disease of steel box girder inclined web member |
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| CN112853946A (en) * | 2021-03-18 | 2021-05-28 | 长安大学 | Grouting sleeve, grouting sleeve connected assembled pier and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114411531B (en) | 2024-02-06 |
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