CN108442238B - Transverse assembly type self-resetting anti-seismic stop block and construction method thereof - Google Patents
Transverse assembly type self-resetting anti-seismic stop block and construction method thereof Download PDFInfo
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- CN108442238B CN108442238B CN201810523677.1A CN201810523677A CN108442238B CN 108442238 B CN108442238 B CN 108442238B CN 201810523677 A CN201810523677 A CN 201810523677A CN 108442238 B CN108442238 B CN 108442238B
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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
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- 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
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Abstract
The transverse assembly type self-resetting type anti-seismic stop block comprises a stop block body, wherein the stop block body is transversely arranged at one end part of an end cap beam, the other end of the end cap beam is connected with a middle cap beam, and the stop block body and the end cap beam and the middle cap beam are connected in a transverse mortise and tenon joint mode and are respectively provided with transverse prestressed reinforcement and a tensioning anchor for anchoring; the connection between the stop block body and the end cover beam is movable assembly type connection; the end cover beam and the middle cover beam are permanently assembled, the stop block body and the end cover beam are of ultra-high performance concrete structures, and the middle cover beam is of a common concrete structure; the invention further comprises a construction method of the transverse assembly type self-resetting anti-seismic stop block. The invention has firm transverse limiting capability under the action of small earthquake, can protect the lower structure by the rotation energy consumption of the stop block under the action of large earthquake, has stronger self-resetting function, and has simple structure and convenient construction.
Description
Technical Field
The invention relates to a bridge anti-seismic structure and a construction method thereof, in particular to a transverse assembly type self-resetting anti-seismic stop block and a construction method thereof.
Background
In China, the middle and small span reinforced concrete beam type bridge mostly adopts a plate type rubber support which is directly placed, namely, the upper surface and the lower surface of the support, the beam bottom and the cover beam are not anchored, and the main beam can generate larger horizontal displacement under the action of strong earthquake, so that the concrete transverse stop blocks are necessary to be arranged on the bridge pier cover beam and the bridge abutment cap. In 2008, a large number of transverse check blocks are damaged in the Wenchuan earthquake, and in fact, the check blocks are damaged to restrict the girder to further displacement in the transverse bridge to a certain extent, so that the function of protecting the support can be achieved, and the function of preventing the girder from falling can be achieved. According to the concept of capacity protection design, concrete earthquake-resistant stops are generally required to be designed into a sacrificial member or a fuse unit, and the U.S. California bridge earthquake-resistant specification correspondingly prescribes the maximum horizontal bearing capacity of the concrete earthquake-resistant stops at the bridge abutment so as to ensure that the bridge abutment and the foundation below are not damaged by earthquake. However, the current bridge anti-seismic design specifications in China provide measures for preventing transverse beam falling by adopting the stop blocks, but do not provide detailed requirements for the construction and reinforcement of the anti-seismic stop blocks.
One of the reasons for the design difficulty of the anti-seismic stop block is that the stop block structure adopted at home and abroad is mostly integrated at present, namely, a certain amount of anchoring steel bars are reserved at two ends of the capping beam, and then the stop block and the capping beam are connected into a whole in the form of cast-in-place concrete. When the integral concrete stop block is designed, the ribs are arranged according to the structure, the damage mechanism of the stop block under the action of transverse earthquake force is complex, the stress mode is not clear, an ideal fuse unit form is difficult to design, and the requirement of multi-level fortification is difficult to meet.
In order to solve the above-mentioned problems, the related scholars and design units propose different types of stopper structures including sliding stopper, friction stopper, rubber stopper, steel stopper, and stopper with damper, etc. The novel stop block structures can improve the performance of the traditional stop block to a certain extent, but the problems of excessively high manufacturing cost, complex construction process, insufficient durability and the like often exist, and the novel stop block structures cannot be popularized and used in a large area. In addition, the applicant finds out through reading a great deal of domestic and foreign documents and specifications that the spatial position relation between various existing stop block structures and the bent cap or the table cap is mostly arranged up and down, namely, the transverse horizontal force born by the stop block is realized through complex structural reinforcing bars or vertical prestress between the stop block and the bent cap, the stress characteristics and the force transmission path of the stop block are not clear due to the common structural reinforcing bars, and the problem of overlarge prestress damage exists due to the fact that the vertical prestress reinforcing bars are too short in length is also one of reasons for causing the difficulty in designing the stop block.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a transverse assembly type self-resetting type anti-seismic stop block and a construction method thereof.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the transverse assembly type self-resetting type anti-seismic stop block comprises a stop block body, wherein the stop block body is transversely arranged at one end part of an end cap beam, the other end of the end cap beam is connected with a middle cap beam, the stop block body and the end cap beam and the middle cap beam are connected in a transverse mortise and tenon joint mode, transverse prestressed reinforcement and a tensioning anchor are respectively arranged for anchoring, and the stop block body, the end cap beam and the middle cap beam are mutually independent members and are designed into a transverse mortise and tenon connection structure, so that rapid assembly type construction is facilitated, and environmental pollution is reduced; the number of the prestressed reinforcement is determined by the transverse earthquake force of an actual bridge structure so as to realize the functions of a small earthquake protection support (namely a force transmission device for supporting an upper structure, which is used for transmitting a large load and ensuring that the upper structure supported by the small earthquake protection support can generate certain deflection according to the design requirement), and a large earthquake protection bridge lower structure (comprising a bridge pier, a bridge abutment and a pile foundation), wherein the surface of the prestressed reinforcement is protected by epoxy resin and the like; the tensioning anchorage is an anchorage tensioning system capable of realizing secondary tensioning so as to reduce prestress loss, and the prestress degree of the stop block during assembly type construction can be adjusted when necessary so as to meet the requirements of various anti-seismic performances; the connection between the stop block body and the end cover beam is movable assembly type connection, so that the stop block body can rotate outwards under the action of large vibration; the connection between the end cover beam and the middle cover beam is permanent assembly type connection.
As a further improvement of the above technical scheme: the stop block body and the end cap beam are of ultra-high performance concrete structures (UHPC), factory prefabrication, maintenance and molding can be realized, the ultra-strong toughness and the tensile strength are realized, the bearing capacity is high, and the middle cap beam is of a common concrete structure (NC), so that the economy is good; the middle capping beam is common concrete with the reference number of C40 or C50.
Further, a protruding falcon A is arranged on the stop block body; one side of the end cover beam is provided with a groove A matched with the protruding falcon A for use, and the other side of the end cover beam is provided with the protruding falcon B; and a groove B matched with the protruding falcon B is formed in the middle capping beam.
Further, the protruding falcon a and the protruding falcon B are respectively any one of a trapezoid structure, a curved surface structure, a sawtooth structure, a rectangular structure or a wave-shaped structure.
Further, the upper part of the stop block body is of a bevel web structure or a straight web structure.
Further, the stop block body and the end cap beam are prefabricated components which are independent of each other, the middle cap beam is an existing pouring or prefabricated component, and a pre-stress pipe and an anchor mounting hole are reserved in the middle cap beam.
Furthermore, the stop block body and the end cover beam are anchored by adopting an unbonded transverse prestress steel beam, a steel plate or a rubber block is adopted as a detachable anchor sealing treatment after the stop block body is anchored and prestressed and tensioned, and the periphery is sealed by adopting epoxy resin glue; the block body, the end cover beam and the middle cover beam are reserved with prestressed rib pore canals A which are PVC pipes or seamless steel pipes, grouting is not needed in the pipelines after splicing is completed, and a non-binding prestressed system is formed; the end cover beam and the middle cover beam are anchored by adopting a bonding transverse prestress steel beam, corresponding prestress rib pore canals B are reserved in the end cover beam and the middle cover beam, the prestress rib pore canals B can be plastic corrugated pipes, grouting is arranged between the prestress rib pore canals B and the prestress steel bars, grouting is carried out after the prestress is tensioned, and grouting is carried out by adopting a vacuum grouting method.
Further, the tensile strength of the block body is 15 MPa-30 MPa, and the compressive strength is 150 MPa-200 MPa.
The construction method of the transverse assembly type self-resetting type anti-seismic stop block adopts the transverse assembly type self-resetting type anti-seismic stop block and comprises the following steps of:
a: construction of bridge lower structure pier column: finishing construction of the lower structural pier column according to a bridge structural design drawing, and reserving middle bent cap anchoring steel bars;
b: and (3) construction of a middle capping beam: pouring a middle capping beam on site at the top of the pier column, or hoisting the prefabricated middle capping beam, wherein a prestressed tendon pore canal B is reserved in the middle capping beam;
c: prefabrication and assembly construction of end cap beams: preparing a mixture of end cap beams according to design requirements, pouring end cap beam components in a factory prefabricated template, reserving prestressed rib pore channels B in the end cap beams, splicing the end cap beams and the middle cap beams in a mortise-tenon connection mode, tensioning corresponding transverse prestressed steel bars, grouting the pipelines and permanently sealing anchors;
d: prefabrication and assembly construction of the stop block body: preparing a mixture of a stop block body according to design requirements, pouring a stop block body member in a factory prefabricated template, reserving a prestressed reinforcement pore channel A in the stop block body, splicing the stop block body and an end cover beam in a mortise-tenon connection mode, tensioning corresponding transverse prestressed reinforcements, and performing anchor sealing treatment;
e: sealing the joint part: and sealing all joint parts by using epoxy resin.
Furthermore, the end cap beam in the step c and the stop block body in the step d are of ultra-high performance concrete structures.
Compared with the prior art, the invention has the advantages that:
1. according to the transverse assembly type self-resetting type anti-seismic stop block, the stop block body, the end cover beam and the middle cover beam are connected in a splicing mode, and the transverse prestress steel bars and the tensioning anchorage device are used for enabling larger prestress to be formed between the stop block body, the end cover beam and the middle cover beam, so that the stop block body has an effective transverse limiting function under the action of small earthquake to protect a support, and the characteristic of the assembled transverse prestress connection of the stop block body can be utilized, so that repeated clutch (rotation) energy consumption between the stop block body and the end cover beam under the action of large earthquake and rare earthquake is realized, the safety of a lower structure of a bridge is protected, and the controllable or non-falling of large earthquake is ensured;
2. the transverse assembly type self-resetting type anti-seismic stop block adopts the transverse arrangement of the stop block body to form a transverse prestress system, and can realize the self-resetting function of the stop block body after earthquake by utilizing the characteristics of strong tensile limit and high elastic modulus of the transverse prestress steel bar, so as to reduce residual deformation and corresponding repair cost after the earthquake;
3. the transverse assembly type self-resetting type anti-seismic stop block enables a non-bonding prestress system to be adopted between the stop block body and the end cover beam, so that the integrity of the end cover beam and the middle cover beam can not be damaged when the stop block body is seriously damaged under the action of huge earthquake, and the stop block body is only required to be replaced and the prestress is tensioned again in the later maintenance stage, so that the rapid restoration of the bridge structure after the earthquake can be realized;
4. compared with the traditional vertically arranged stop blocks, the invention has simple structure and quite definite force transmission path, can realize multi-level fortification and is beneficial to the performance anti-seismic design of bridge structures; the characteristics of super toughness and tensile strength of the stop block body and the end cover beam which are made of the ultra-high performance concrete structure can be utilized, so that the transverse limit function is better, and the service life is longer;
5. the construction method of the transverse assembly type self-resetting anti-seismic stop block is simple in process, the stop block body, the end cap beam and the middle cap beam are completely independent components, on-site assembly can be realized, factory prefabrication can be realized on the stop block body and the end cap beam, factory prefabrication can be realized on the middle cap beam, on-site pouring can be realized, the time consumption in the construction process is less, and labor can be effectively saved;
6. according to the construction method of the transverse assembly type self-resetting anti-seismic stop block, as the stop block body, the end cover beam and the middle cover beam are completely independent components, the stop block body is convenient to replace and low in cost when damaged, and convenience and economy in maintenance in the later period of construction can be ensured;
7. according to the construction method of the transverse assembly type self-resetting anti-seismic stop block, the stop block body and the end cover beam can be prefabricated in a factory and can be assembled and constructed on a bridge construction site, so that the environmental pollution caused by cast-in-situ construction can be reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the rotation of the block body under the action of a large earthquake (the direction of the arrow in the figure is the action direction of the earthquake);
FIG. 3 is a schematic view of the structure of the stopper body in embodiment 1 of the present invention;
fig. 4 is a schematic structural view of an end cap beam in embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a middle roof rail in embodiment 1 of the present invention;
FIG. 6 is a schematic view of the structure of the stopper body in embodiment 2 of the present invention;
fig. 7 is a schematic structural view of a stopper body in embodiment 3 of the present invention.
Legend description:
1. a block body; 11. a male tenon A; 2. end cap beams; 21. a groove A; 22. a protruding falcon B; 3. a middle capping beam; 31. a groove B; 4. prestress steel bars; 5. stretching an anchor; 6. a prestressed tendon duct A; 7. a prestressed tendon duct B; 8. pier column.
Detailed Description
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown, for the purpose of illustrating the invention, but the scope of the invention is not limited to the specific embodiments shown.
Example 1:
as shown in fig. 1 to 5, a transverse assembled self-resetting type anti-seismic stop comprises a stop body 1, wherein the stop body 1 is transversely arranged at one end part of an end cap beam 2, the other end of the end cap beam 2 is connected with a middle cap beam 3, the stop body 1 is connected with the end cap beam 2, and the end cap beam 2 is connected with the middle cap beam 3 in a transverse mortise and tenon joint mode, transverse prestressed steel bars 4 and tensioning anchors 5 are respectively arranged for anchoring, the prestressed steel bars 4 are high-strength low-relaxation steel strands with the nominal diameter of 15.2mm, the tensile strength standard value fpk =1860 Mpa, and the elastic modulus E= 195000Mpa; the connection between the stop block body 1 and the end cover beam 2 is movable assembly type connection; the connection between the end cap beam 2 and the middle cap beam 3 is a permanent assembly type connection.
In this embodiment, the block body 1 and the end capping beam 2 are both ultra-high performance concrete structures, and the middle capping beam 3 is a common concrete structure.
In the embodiment, a protruding falcon A11 is arranged on the stop block body 1; one side of the end cover beam 2 is provided with a groove A21 matched with the protruding falcon A11 for use, and the other side is provided with a protruding falcon B22; the middle capping beam 3 is provided with a groove B31 matched with the protruding falcon B22.
In this embodiment, protruding falcon A11 is the trapezium structure, and protruding falcon B22 is the rectangle structure, and the convenient concatenation of carrying out during the construction just can guarantee to adapt to the rigidity rotation of dog body 1 under the seismic action.
In this embodiment, the upper portion of the block body 1 is a sloping web structure.
In this embodiment, the stop body 1 and the end cap beam 2 are prefabricated components independent of each other, and the middle cap beam 3 is a cast-in-place or prefabricated component.
In the embodiment, a non-bonding transverse prestress steel beam is adopted for anchoring between the stop block body 1 and the end cover beam 2, and prestress rib pore channels A6 are reserved in the stop block body 1, the end cover beam 2 and the middle cover beam 3; the end cover beam 2 and the middle cover beam 3 are anchored by adopting a bonding transverse prestress steel beam, corresponding prestress rib pore canals B7 are reserved in the end cover beam 2 and the middle cover beam 3, and grouting is arranged between the prestress rib pore canals B7 and the prestress steel bars 4.
In this embodiment, the tensile strength of the stopper body 1 is 15MPa to 30MPa, and the compressive strength is 150MPa to 200MPa.
In this embodiment, the construction method of the transverse assembly type self-resetting anti-seismic stop block includes the following steps:
a: construction of bridge substructure pier 8: finishing construction of the lower structure pier column 8 according to a bridge structure design drawing, and reserving an anchoring reinforcing steel bar of the middle bent cap 3;
b: and (3) construction of a middle capping beam 3: pouring a middle capping beam 3 on site at the top of the pier column 8, or hoisting the prefabricated middle capping beam 3, wherein a prestressed rib pore canal B7 is reserved in the middle capping beam 3;
c: prefabrication and assembly construction of end cap beam 2: preparing a mixture of the end cap beam 2 according to design requirements, pouring an end cap beam 2 component in a factory prefabricated template, reserving a prestressed tendon pore canal B7 in the end cap beam 2, splicing the end cap beam 2 and the middle cap beam 3 in a mortise-tenon connection mode, tensioning corresponding transverse prestressed reinforcements 4, and performing pipeline grouting and permanent anchor sealing treatment;
d: prefabrication and assembly construction of the stop block body 1: preparing a mixture of a stop block body 1 according to design requirements, pouring a stop block body 1 member in a factory prefabricated template, reserving a prestressed reinforcement duct A6 in the stop block body 1, splicing the stop block body 1 and an end cover beam 2 in a mortise-tenon connection mode, tensioning corresponding transverse prestressed reinforcements 4, and performing anchor sealing treatment;
e: sealing the joint part: and sealing all joint parts by using epoxy resin.
In this embodiment, the end cap beam 2 in the step c and the stopper body 1 in the step d are both ultra-high performance concrete structures.
Example 2:
as shown in fig. 6, this embodiment differs from embodiment 1 in that: the protruding falcon a11 is of an arc structure, the upper portion of the block body 1 is of a straight web structure, and the rest of the structure is the same as that of embodiment 1.
Example 3:
as shown in fig. 7, this embodiment differs from embodiment 1 in that: tennons a11 have a zigzag structure, and the rest is the same as that of embodiment 1.
Claims (9)
1. The utility model provides a horizontal assembled is from restoring to throne formula antidetonation dog, includes dog body (1), its characterized in that: the stop block body (1) is transversely arranged at one end part of the end cover beam (2), the other end of the end cover beam (2) is connected with the middle cover beam (3), the stop block body (1) is connected with the end cover beam (2) in a manner of transverse mortise splicing, the stop block body (2) is connected with the middle cover beam (3) in a manner of transverse mortise splicing, transverse prestressed reinforcement (4) and tensioning anchorage devices (5) are respectively arranged for anchoring, the connection between the stop block body (1) and the end cover beam (2) is movably assembled, the connection between the end cover beam (2) and the middle cover beam (3) is permanently assembled, the stop block body (1) and the end cover beam (2) are anchored by adopting unbonded transverse prestressed reinforcement, the stop block body (1), the end cover beam (2) and the middle cover beam (3) are internally reserved with prestressed reinforcement pore channels A (6), the end cover beam (2) and the middle cover beam (3) are correspondingly reserved with prestressed reinforcement B, the transverse prestressed reinforcement B (7) are correspondingly reserved in the prestressed reinforcement pore channels B, grouting is arranged between the prestressed reinforcement pore canal B (7) and the prestressed reinforcement (4).
2. The transversely assembled self-resetting earthquake-resistant stop of claim 1, wherein: the stop block body (1) and the end cover beam (2) are of ultra-high performance concrete structures, and the middle cover beam (3) is of a common concrete structure.
3. The transversely assembled self-resetting earthquake-resistant stop of claim 1, wherein: a protruding falcon A (11) is arranged on the stop block body (1); one side of the end cover beam (2) is provided with a groove A (21) matched with the protruding falcon A (11), and the other side is provided with a protruding falcon B (22); the middle cover beam (3) is provided with a groove B (31) matched with the protruding falcon B (22).
4. A transversely assembled self-resetting earthquake-resistant stop as claimed in claim 3, wherein: the protruding falcon A (11) and the protruding falcon B (22) are respectively any one of a trapezoid structure, a curved surface structure, a sawtooth structure and a rectangular structure.
5. The transversely assembled self-resetting earthquake-resistant stop as recited in any one of claims 1-4, wherein: the upper part of the stop block body (1) is of an inclined web structure or a straight web structure.
6. The transversely assembled self-resetting earthquake-resistant stop as recited in any one of claims 1-4, wherein: the stop block body (1) and the end cover beam (2) are prefabricated components which are mutually independent, and the middle cover beam (3) is an existing pouring or prefabricated component.
7. The transversely assembled self-resetting earthquake-resistant stop as recited in any one of claims 1-4, wherein: the tensile strength of the block body (1) is 15-30 MPa, and the compressive strength is 150-200 MPa.
8. A construction method of a transverse assembly type self-resetting type anti-seismic stop block, which is characterized by adopting the transverse assembly type self-resetting type anti-seismic stop block as claimed in any one of the claims 1-7, comprising the following steps:
a: construction of bridge substructure pier (8): finishing construction of the lower structure pier column (8) according to a bridge structure design drawing, and reserving an anchoring reinforcing steel bar of the middle bent cap (3);
b: construction of the middle capping beam (3): pouring a middle capping beam (3) on the top of the pier column (8) in situ, or hoisting the prefabricated middle capping beam (3), wherein a prestressed rib pore canal A (6) and a prestressed rib pore canal B (7) are reserved in the middle capping beam (3);
c: prefabrication and assembly construction of end cap beams (2): preparing a mixture of an end cap beam (2) according to design requirements, pouring an end cap beam (2) component in a factory prefabricated template, reserving a prestressed reinforcement duct A (6) and a prestressed reinforcement duct B (7) in the end cap beam (2), splicing and constructing the end cap beam (2) and a middle cap beam (3) in a mortise-tenon connection mode, penetrating and arranging a bonding transverse prestressed reinforcement in the prestressed reinforcement duct B (7), tensioning the corresponding transverse prestressed reinforcement (4), and performing pipeline grouting and permanent anchor sealing treatment;
d: prefabrication and assembly construction of the stop block body (1): preparing a mixture of a stop block body (1) according to design requirements, pouring a stop block body (1) component in a factory prefabricated template, reserving a prestressed reinforcement duct A (6) in the stop block body (1), splicing and constructing the stop block body (1) and an end cover beam (2) in a mortise-tenon connection mode, penetrating the prestressed reinforcement in the prestressed reinforcement duct A (6) without bonding, stretching the corresponding transverse prestressed reinforcement (4) and sealing anchors;
e: sealing the joint part: and sealing all joint parts by using epoxy resin.
9. The method for constructing the transverse assembly type self-resetting anti-seismic stop block according to claim 8, wherein the method comprises the following steps: the end cover beam (2) in the step c and the stop block body (1) in the step d are of ultra-high performance concrete structures.
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| CN201810523677.1A CN108442238B (en) | 2018-05-28 | 2018-05-28 | Transverse assembly type self-resetting anti-seismic stop block and construction method thereof |
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| CN201810523677.1A CN108442238B (en) | 2018-05-28 | 2018-05-28 | Transverse assembly type self-resetting anti-seismic stop block and construction method thereof |
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| CN108442238B true CN108442238B (en) | 2023-09-19 |
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| CN110004818B (en) * | 2019-04-23 | 2024-05-03 | 湘潭大学 | Energy-consumption type swinging self-resetting anti-seismic stop block system and construction method thereof |
| CN110205917A (en) * | 2019-05-05 | 2019-09-06 | 中国公路工程咨询集团有限公司 | Composite structure and preparation method thereof |
| CN110777682A (en) * | 2019-12-06 | 2020-02-11 | 湘潭大学 | Anti-seismic reinforcing method for bridge transverse stop block |
| CN112854026A (en) * | 2021-01-18 | 2021-05-28 | 荀敬川 | Gap sealing anti-corrosion structure for bridge splicing and construction method thereof |
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| 新型桥梁防震挡块作用机理研究;冯云才;任红全;周凯;;四川建筑科学研究(第02期);第85-87页 * |
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| CN108442238A (en) | 2018-08-24 |
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