CN113957786B - Assembled bridge end expansion deformation coordination structure and installation method thereof - Google Patents
Assembled bridge end expansion deformation coordination structure and installation method thereof Download PDFInfo
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- CN113957786B CN113957786B CN202111286667.9A CN202111286667A CN113957786B CN 113957786 B CN113957786 B CN 113957786B CN 202111286667 A CN202111286667 A CN 202111286667A CN 113957786 B CN113957786 B CN 113957786B
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- 238000009434 installation Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 claims abstract description 64
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 238000010276 construction Methods 0.000 claims abstract description 15
- 238000013461 design Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
Classifications
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/062—Joints having intermediate beams
-
- 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
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/065—Joints having sliding plates
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses an assembled bridge end telescopic deformation coordination structure and an installation method thereof, belonging to the technical field of bridge construction, wherein the structure comprises a first beam end and a second beam end which are butted by gaps; the side end surfaces of the first beam end and the second beam end are transversely provided with a plurality of first displacement tank grooves and second displacement tank grooves which are symmetrical in notch; a supporting beam crossing the gap is slidably arranged in the first displacement tank groove and the second displacement tank groove along the depth direction of the tank groove; the support beam is fixedly provided with I-steel, one end of a top leg plate of the I-steel is connected with a first beam end above the first displacement tank through a buffer block, and the other end of the top leg plate is connected with a second beam end above the second displacement tank through a buffer block. The invention can play a role in buffering and protecting the telescopic deformation of the assembled bridge end, and the structure is easy to replace and install, thereby being convenient for maintenance during operation.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to an assembled bridge end telescopic deformation coordination structure and an installation method thereof.
Background
At present, an expansion joint is generally required to be arranged at the beam end of the assembled bridge, and the conventional method is to perform roughening treatment on the beam end at the joint position after the assembled bridge is installed on site, so that the expansion device is installed and concrete is poured, but the conventional method generally requires about 15 days for construction, and is relatively long in time. Meanwhile, once the traditional telescopic device is damaged, the beam end needs to be destructively removed and replaced, the maintenance period is long, and normal traffic is affected. Therefore, it is necessary to research a structure or technology which can meet the related requirements of expansion and deformation and is convenient to detach and maintain on the premise of meeting the technical requirements of expansion joints at the bridge beam ends aiming at the technical problems.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an assembled bridge end telescopic deformation coordination structure and an installation method thereof, which can play a role in buffering and protecting the telescopic deformation of the assembled bridge end, and the structure is easy to replace and install and is convenient to maintain during operation.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
in a first aspect, the present invention provides a telescopic deformation coordinating construction for an assembled bridge end, comprising:
the first beam end and the second beam end are butted in gaps;
the side end surfaces of the first beam end and the second beam end are transversely provided with a plurality of first displacement tank grooves and second displacement tank grooves which are symmetrical with each other along a gap;
a supporting beam crossing the gap is slidably arranged in the first displacement tank groove and the second displacement tank groove along the depth direction of the tank groove;
the support beam is fixedly provided with I-steel, one end of a top leg plate of the I-steel is connected with a first beam end above the first displacement tank through a buffer block, and the other end of the top leg plate is connected with a second beam end above the second displacement tank through a buffer block.
Further, the bottom leg plate of the I-steel transversely spans across the gaps and is fixedly screwed on the plurality of supporting beams.
Further, the two ends of the top leg plate of the I-steel are respectively provided with a C-shaped inner curled edge first notch extending transversely along the gap, the first beam end and the second beam end are respectively provided with a C-shaped inner curled edge and a second notch opposite to the first notch, and two side ends of the buffer block are respectively and hermetically buckled with the first notch and the second notch.
Further, the second notch is a C-shaped inner curled channel fixedly welded to the first beam end and the second Liang Duanshang.
Further, the buffer block is a strip-shaped rubber strip with two side ends respectively matched with the first notch and the second notch.
Further, the inner end angle of the C-shaped inner curled edge of the first notch and/or the second notch is in a right-angle structure or an arc structure.
Further, two parallel guide rails are arranged in the first displacement tank groove and the second displacement tank groove along the depth direction of the tank groove, and a plurality of pulleys sliding along the guide rails are arranged at the bottom of the supporting beam.
Further, a plurality of studs with nuts are arranged on the top surface of the supporting beam, and a plurality of bolt holes for penetrating the studs are formed in the bottom leg plate of the I-steel.
Further, the first displacement tank groove and the second displacement tank groove are steel tank bodies which are respectively embedded in the first beam end and the second beam end and are provided with an opening at one end; the depth of the first displacement tank is larger than that of the second displacement tank, and is not smaller than the length of the supporting beam.
On the other hand, the invention provides an installation method of the telescopic deformation coordination structure of the assembled bridge end, which comprises the following steps:
preparing a first beam end, a second beam end, a supporting cross beam, I-steel and a buffer block according to construction design requirements;
placing a plurality of supporting cross beams in corresponding first displacement box grooves in a first beam end with larger depth, hoisting the first beam end and the second beam end in place by using hoisting machinery, and measuring and adjusting the gap spacing between the first beam end and the second beam end according to the construction design requirement;
a plurality of supporting beams are spanned between the corresponding first displacement box groove and the corresponding second displacement box groove, and the positions of the supporting beams are adjusted by moving pulleys at the bottoms of the supporting beams along sliding rails in the box grooves, so that bolts on the supporting beams are positioned at proper positions connected with the I-steel;
hoisting the I-steel by using hoisting machinery, transversely placing the I-steel between the gaps along the gaps, and fixedly and spirally connecting the I-steel to a plurality of supporting beams through threaded holes on the bottom leg plates;
and (3) respectively sealing and buckling the two strip-shaped rubber strips in the first notch and the second notch which are opposite to the two sides of the I-steel, and completing the telescopic deformation coordination structure installation of the assembled bridge end.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the I-steel, the buffer block and the movable supporting cross beam are arranged between two adjacent butt joint beam ends, so that the buffer protection effect on the telescopic deformation of the assembled bridge ends can be realized, the site construction period is shortened, the structure is easy to replace and install, and the maintenance during operation is convenient;
the I-steel and the beam end are sealed by a C-shaped inner winding notch and are buckled with a buffer block (rubber strip and the like), so that the expansion joint can be buffered smoothly and can be sealed and protected;
the supporting cross beam can slide in the displacement box groove at the beam end, and can be used for position adjustment during installation, so that different telescopic structures are convenient to apply and installation is convenient;
and in the process of telescopic deformation, the support beam is communicated and fixedly arranged on the I-steel, so that the I-steel can be subjected to position sliding fine adjustment, and the I-steel is firmly connected with the rubber strip buffer block under deformation stress, and has a stable structure.
Drawings
FIG. 1 is a schematic cross-sectional view of a fabricated bridge end telescoping deformation conforming configuration provided in accordance with an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of an inner corner of an inner curl of an I-steel at right angles according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an arc at an inner corner of an inner curl of an I-steel according to an embodiment of the present invention;
FIG. 4 is a schematic side cross-sectional view of a support beam provided in accordance with an embodiment of the present invention;
FIG. 5 is a side cross-sectional view of a beam end provided in accordance with an embodiment of the present invention;
FIG. 6 is a front view of a beam end provided in accordance with an embodiment of the present invention;
fig. 7 is a top view of a fabricated bridge end telescoping deformation coordination configuration provided in accordance with an embodiment of the present invention.
In the figure:
1. a first beam end; 2. a second beam end; 3. a support beam; 4. i-steel; 5. a buffer block;
101. a first displacement tank; 102. a second displacement tank; 103. a guide rail; 104. a second notch;
301. a pulley; 302. a peg; 401. a bottom leg plate; 402. a leg supporting plate; 403. waist plate;
404. a first notch; 405. bolt holes; 406. an inner hemming; 407. an inner end angle.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1, in an embodiment of the present invention, there is provided a telescopic deformation coordinating structure of an assembled bridge end, the structure comprising:
the first beam end 1 and the second beam end 2 are butted in gaps;
a plurality of first displacement tank grooves 101 and second displacement tank grooves 102 which are symmetrical are respectively arranged on the side end surfaces of the first beam end 1 and the second beam end 2 along the transverse direction of the gap;
a supporting beam 3 crossing the gap is slidably arranged in the first displacement tank 101 and the second displacement tank 102 along the depth direction of the tank;
the support beam 3 is fixedly provided with I-steel 4, one end of a top leg plate 402 of the I-steel 4 is connected with a first beam end 1 above the first displacement tank 101 through a buffer block 5, and the other end is connected with a second beam end 2 above the second displacement tank 102 through the buffer block 5.
The invention provides a telescopic deformation coordination structure of an assembled bridge end, which can play a role in buffering and protecting the telescopic deformation of the assembled bridge end, is easy to replace and install and is convenient to maintain during operation.
In some embodiments, as shown in fig. 7, a plurality of first displacement tank grooves 101 and second displacement tank grooves 102 which are symmetrical are respectively formed on the side end surfaces of the first beam end 1 and the second beam end 2 along the transverse direction of the gap. The I-steel 4 is in a long strip shape, and the bottom leg plate 401 transversely spans the gaps and is fixedly screwed on the plurality of supporting beams 3. For the convenience of construction, the length of the I-steel 4 is equivalent to the length of the telescopic gap between beam ends.
As shown in fig. 2 and 3, the i-beam 4 includes a top leg plate 402 and a bottom leg plate 401 connected by a waist plate 403. The two ends of the top leg plate 402 of the i-steel 4 are respectively provided with a C-shaped inner curled first notch 404 extending transversely along the gap, and the opening direction of the notch faces the extending direction of the two ends of the top leg plate 402.
As shown in fig. 5, the first beam end 1 and the second beam end 2 are respectively provided with a second notch 104 which is turned inward by C and is opposite to the first notch 404, and the second notch 104 is provided above the first displacement tank 101 and the second displacement tank 102 on the first beam end 1 and the second beam end 2 respectively and extends transversely along the slit.
Wherein the slot openings of the corresponding first slot 404 and second slot 104 are opposite in direction to facilitate snapping of the buffer block 5 for sealing, cushioning.
Specifically, the second notch 104 is a C-shaped inner curled channel fixedly welded to the first beam end 1 and the second beam end 2.
As shown in fig. 2 and 3, the inner corners 407 of the C-shaped inner beads 406 of the first slot 404 and/or the second slot 104 are in a right angle configuration or a rounded configuration. The inner bead 406 is used for fastening by a buckle and preventing the buffer block 5 (rubber strip, etc.) from falling off, and can reduce stress concentration in the process of telescopic deformation; the circular arc structure of the inner end angle 407 is more beneficial to the disassembly and the installation of the rubber strip.
As shown in fig. 1, the shapes of the two ends of the buffer block 5 are matched with the shapes of the first notch 404 and the second notch 104 respectively, so that the notches of the buckles are fully filled, and the sealing effect and the connection stability effect are achieved. In the construction connection, the two side ends of the buffer block 5 are respectively and hermetically buckled with the first notch 404 and the second notch 104 which are opposite.
In particular, the buffer block 5 is made of an elastic material with corrosion resistance, friction resistance, certain compressibility and water expansion, for example, the buffer block 5 is made of a rubber strip, and the length, the shape of two ends and the like of the buffer block are matched with those of the first notch 404 and the second notch 104 so as to be convenient for application and installation.
In some embodiments, as shown in fig. 5 and 6, two parallel guide rails 103 are provided in the first displacement tank 101 and the second displacement tank 102 along the tank depth direction.
As shown in fig. 4, the bottom of the supporting beam 3 is provided with a plurality of pulleys 301 sliding along the guide rail 103.
The supporting cross beam 3 can slide in the displacement box groove at the beam end, and can be used for position adjustment during installation, so that different telescopic structures are convenient to apply and installation is convenient; and in the process of expansion and deformation, the support beam 3 is communicated and fixedly arranged on the support beam, and the position of the I-steel 4 can be subjected to sliding fine adjustment, so that the I-steel 4 is firmly connected with the rubber strip buffer block 5 under deformation stress, and the structure is stable.
As shown in fig. 4, the top surface of the support beam 3 is provided with a plurality of studs 302 provided with nuts.
As shown in fig. 2, the bottom leg plate 401 of the i-steel 4 is provided with a plurality of bolt holes 405 for penetrating the bolts 302.
In the process of installation, bolt holes 405 of the I-steel 4 are sleeved on the bolts 302 on the supporting cross beam 3, and then the bolts are screwed and fixed by nuts.
In some embodiments, the first displacement tank 101 and the second displacement tank 102 are steel tanks pre-buried in the first beam end 1 and the second beam end 2, respectively, with one end open.
Wherein the tank depth of the first displacement tank 101 is greater than the tank depth of the second displacement tank 102 and is not less than the length of the support beam 3.
The depth space of the first displacement tank 101 and the depth space of the second displacement tank 102 are different, and the depth of the first displacement tank 101 with larger depth is not smaller than the length of the supporting beam 3, so that the supporting beam 3 is placed in the first displacement tank 101 during hoisting and assembling, the position of the supporting beam 3 is adjusted along the guide rail 103 after the two first beam ends 1 and the second beam ends 2 are butted, the installation and the operation are convenient, when the supporting beam 3 cannot be placed in the tank due to insufficient depth, the hoisting and the butting of the two beam ends are blocked, and the construction efficiency is improved.
On the other hand, the embodiment of the invention also provides a mounting method of the telescopic deformation coordination structure of the assembled bridge end, which comprises the following steps:
preparing a first beam end 1, a second beam end 2, a supporting cross beam 3, I-steel 4 and a buffer block 5 according to construction design requirements;
placing a plurality of supporting beams 3 in corresponding first displacement box grooves 101 in a first beam end 1 with larger box groove depth, hoisting the first beam end 1 and a second beam end 2 in place by using hoisting machinery, and measuring and adjusting the gap spacing between the first beam end 1 and the second beam end 2 according to construction design requirements;
a plurality of supporting beams 3 are spanned between the corresponding first displacement tank 101 and the corresponding second displacement tank 102, and the positions of the supporting beams 3 are adjusted by moving pulleys 301 at the bottoms of the supporting beams 3 along sliding rails in the tank, so that bolts 302 on the supporting beams 3 are positioned at proper positions connected with the I-steel 4;
hoisting the I-steel 4 by using hoisting machinery, transversely placing the I-steel 4 between the gaps along the gaps, and fixedly and spirally connecting the I-steel 4 to the plurality of support beams 3 through threaded holes on the bottom leg plates 401;
and (3) respectively sealing and buckling the two strip-shaped rubber strips in the first notch 404 and the second notch 104 which are opposite to the two sides of the I-steel 4, and completing the installation of the telescopic deformation coordination structure of the assembled bridge end.
According to the invention, the I-steel, the buffer block and the movable supporting cross beam are arranged between two adjacent butt joint beam ends, so that the buffer protection effect on the telescopic deformation of the assembled bridge ends can be realized, the site construction period is shortened, the structure is easy to replace and install, and the maintenance during operation is convenient;
the I-steel and the beam end are sealed by a C-shaped inner winding notch and are buckled with a buffer block (rubber strip and the like), so that the expansion joint can be buffered smoothly and can be sealed and protected;
the supporting cross beam can slide in the displacement box groove at the beam end, and can be used for position adjustment during installation, so that different telescopic structures are convenient to apply and installation is convenient;
and in the process of telescopic deformation, the support beam is communicated and fixedly arranged on the I-steel, so that the I-steel can be subjected to position sliding fine adjustment, and the I-steel is firmly connected with the rubber strip buffer block under deformation stress, and has a stable structure.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (5)
1. The method for installing the telescopic deformation coordination structure of the assembled bridge end is characterized in that the telescopic deformation coordination structure of the bridge end comprises the following steps:
the first beam end and the second beam end are butted in gaps;
the side end surfaces of the first beam end and the second beam end are transversely provided with a first displacement tank groove and a second displacement tank groove which are symmetrical in a plurality of notches respectively, a supporting beam crossing the gaps is slidably arranged in the first displacement tank groove and the second displacement tank groove along the depth direction of the tank groove, two parallel guide rails are arranged in the first displacement tank groove and the second displacement tank groove along the depth direction of the tank groove, and a plurality of pulleys sliding along the guide rails are arranged at the bottom of the supporting beam;
the first displacement tank groove and the second displacement tank groove are steel tank bodies which are respectively embedded in the first beam end and the second beam end and are provided with an opening at one end, and the depth of the tank groove of the first displacement tank groove is larger than that of the tank groove of the second displacement tank groove and is not smaller than the length of the supporting cross beam;
i-steel is fixedly arranged on the supporting beams, bottom leg plates of the I-steel transversely cross and are fixedly connected to the supporting beams in a threaded manner along gaps, one ends of top leg plates of the I-steel are connected with a first beam end above a first displacement tank through buffer blocks, the other ends of top leg plates of the I-steel are connected with a second beam end above a second displacement tank through buffer blocks, and the buffer blocks are made of elastic materials with corrosion resistance, friction resistance, certain compressibility and water expansion;
the method for installing the beam end telescopic deformation coordination structure comprises the following steps:
preparing a first beam end, a second beam end, a supporting cross beam, I-steel and a buffer block according to construction design requirements;
placing a plurality of supporting cross beams in corresponding first displacement box grooves in a first beam end with larger depth, hoisting the first beam end and the second beam end in place by using hoisting machinery, and measuring and adjusting the gap spacing between the first beam end and the second beam end according to the construction design requirement;
a plurality of supporting beams are spanned between the corresponding first displacement box groove and the corresponding second displacement box groove, and the positions of the supporting beams are adjusted by moving pulleys at the bottoms of the supporting beams along sliding rails in the box grooves, so that bolts on the supporting beams are positioned at proper positions connected with the I-steel;
hoisting the I-steel by using hoisting machinery, transversely placing the I-steel between the gaps along the gaps, and fixedly and spirally connecting the I-steel to a plurality of supporting beams through bolt holes on the bottom leg plates;
the buffer block adopts two long strip-shaped rubber strips with the shapes of the two side ends respectively matched with the first notch and the second notch, and the two long strip-shaped rubber strips are respectively and hermetically buckled in the first notch and the second notch which are opposite to the two sides of the I-steel, so that the telescopic deformation coordination structure installation of the assembled bridge end is completed.
2. The method of installing a modular bridge-end telescoping deformation co-ordination structure as recited in claim 1, wherein,
the double-sided frame structure is characterized in that C-shaped inner curled edges which transversely extend along the gaps are respectively arranged at two ends of a top leg plate of the I-shaped steel, C-shaped inner curled edges and second notches which are opposite to the first notches are respectively arranged at the first beam end and the second beam end, and two side ends of the buffer block are respectively and hermetically buckled to the first notches and the second notches which are opposite to each other.
3. The method of installing a modular bridge-end telescoping deformation co-ordination structure as recited in claim 2, wherein,
the second notch is a C-shaped inner curled channel steel fixedly welded to the first beam end and the second Liang Duanshang.
4. The method for installing a modular bridge-end telescoping deformation co-ordination structure as recited in claim 3, wherein,
and the inner end angle of the C-shaped inner curled edge of the first notch and/or the second notch is in a right-angle structure or an arc structure.
5. The method of installing a modular bridge-end telescoping deformation co-ordination construct of claim 4, wherein,
the top surface of the supporting beam is provided with a plurality of studs provided with nuts, and the bottom leg plate of the I-steel is provided with a plurality of bolt holes for penetrating the studs.
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|---|---|---|---|
| CN202111286667.9A CN113957786B (en) | 2021-11-02 | 2021-11-02 | Assembled bridge end expansion deformation coordination structure and installation method thereof |
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| CN202111286667.9A CN113957786B (en) | 2021-11-02 | 2021-11-02 | Assembled bridge end expansion deformation coordination structure and installation method thereof |
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| CN115182243B (en) * | 2022-08-12 | 2024-01-19 | 苏交科集团股份有限公司 | Rapidly-replaceable assembled telescopic device and construction method thereof |
| CN115928567B (en) * | 2022-12-26 | 2023-09-19 | 江苏久兴建设工程有限公司 | Seamless expansion device, bridge deck expansion joint structure and paving method thereof |
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| CN109778691A (en) * | 2019-03-14 | 2019-05-21 | 中铁第四勘察设计院集团有限公司 | Steel bomb physique beam type profile steel bridge expansion device |
| CN110331660A (en) * | 2019-08-21 | 2019-10-15 | 衡水中铁建工程橡胶有限责任公司 | A kind of modulus type bridge expanssion joint with flat pendulum support beam |
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| CN113957786A (en) | 2022-01-21 |
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