CN113818362A - Non-landing super-long assembly type bracket and hanging basket integrated structure and construction method - Google Patents

Non-landing super-long assembly type bracket and hanging basket integrated structure and construction method Download PDF

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Publication number
CN113818362A
CN113818362A CN202111214994.3A CN202111214994A CN113818362A CN 113818362 A CN113818362 A CN 113818362A CN 202111214994 A CN202111214994 A CN 202111214994A CN 113818362 A CN113818362 A CN 113818362A
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CN
China
Prior art keywords
bracket
block
hanging basket
assembly type
main
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Pending
Application number
CN202111214994.3A
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Chinese (zh)
Inventor
蒋昭汉
何前途
黄启洲
王春云
曹华斌
赵梦姣
王泽鑫
丁利辉
蓝宇
刘斌
赵素军
高骏
李彬
刘学东
宋晓东
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CCCC First Highway Engineering Co Ltd
No 2 Engineering Co Ltd of CCCC First Highway Engineering Co Ltd
Original Assignee
CCCC First Highway Engineering Co Ltd
No 2 Engineering Co Ltd of CCCC First Highway Engineering Co Ltd
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Application filed by CCCC First Highway Engineering Co Ltd, No 2 Engineering Co Ltd of CCCC First Highway Engineering Co Ltd filed Critical CCCC First Highway Engineering Co Ltd
Priority to CN202111214994.3A priority Critical patent/CN113818362A/en
Publication of CN113818362A publication Critical patent/CN113818362A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • E01D21/10Cantilevered erection

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The application relates to a landing-free super-long assembled bracket and hanging basket integrated structure and a construction method, wherein the landing-free super-long assembled bracket and hanging basket integrated structure comprises a No. 0 block, the No. 0 block is poured on a pier, and the No. 0 block is used as an operation platform for assembling and constructing a hanging basket module; the assembly type brackets are arranged on two sides of the bridge pier and support the No. 0 block to be poured; the cradle module comprises a support unit, wherein the support unit comprises a plurality of main trusses arranged at the tops of the No. 0 blocks, an upper cross beam arranged on the main trusses and a bottom basket cross beam arranged at the bottoms of the No. 0 blocks; the back pressure brackets are arranged on two sides of the No. 0 block and are used for back pressure prepressing of the cradle module; and after the No. 0 block is poured, the assembly type bracket is disassembled and recombined to form the support unit and/or the counter-pressure bracket. The assembled bracket is disassembled and recombined to form the support unit and the back pressure bracket of the hanging basket, so that materials can be repeatedly utilized, the construction period is shortened, and the construction cost is reduced.

Description

Non-landing super-long assembly type bracket and hanging basket integrated structure and construction method
Technical Field
The invention relates to a landing-free super-long assembled bracket and hanging basket integrated structure and a construction method, and belongs to the technical field of continuous rigid frame bridge construction.
Background
Under the construction environments of a steep wall zone of a hillock and a continuous rigid frame bridge in a large inclined plane reservoir area, or under the operation condition, the construction environments are small in operation surface, high in safety risk, urgent in multiple slope and steep curves of a sidewalk and limited in transportation and hoisting conditions, the traditional landing support and the rigid connection type bracket with larger volume cannot be used. In order to overcome the difficulties, in the prior art of continuous rigid frame bridge construction, a cantilever construction method is generally adopted for a main beam. The cantilever construction comprises two methods, namely cantilever pouring and cantilever assembling, wherein the cantilever pouring construction and the bracket method construction of the No. 0 block and the cast-in-place section are common methods for the construction of the continuous rigid frame bridge. The No. 0 block is an operation platform for hanging basket assembly and construction, the hanging basket is a main machine tool for cantilever casting, and during cantilever casting, the work of template installation, reinforcement, pipeline installation and the like of a box girder section is all carried out on the hanging basket, so that the design of the bracket and the hanging basket support is related to the safety and the cost of the whole construction process. In the existing construction mode, the bracket and the cradle support are manufactured respectively, in order to meet the structural requirements of all parts during construction, a large amount of steel is required to be consumed to manufacture the bracket and the cradle support, all the components are assembled to designated positions respectively and assembled into the bracket and the cradle support through high-altitude welding, the engineering cost is high, the construction time is long, and the risk is high.
Disclosure of Invention
The invention aims to provide a landing-free super-long assembly type bracket and hanging basket integrated structure, which can be repeatedly used, reduces the cost and reduces the construction time.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a no falls to ground overlength assembled bracket and hangs basket integral structure, includes:
the number 0 block is poured on a pier and serves as an operation platform for assembling and constructing the cradle module;
the assembly type brackets are arranged on two sides of the bridge pier and support the No. 0 block to be poured;
the cradle module comprises a support unit, wherein the support unit comprises a plurality of main trusses arranged at the tops of the No. 0 blocks, an upper cross beam arranged on the main trusses and a bottom basket cross beam arranged at the bottoms of the No. 0 blocks; and
the back pressure brackets are arranged on two sides of the No. 0 block and are used for back pressure prepressing of the cradle module;
and after the No. 0 block is poured, the assembly type bracket is disassembled and recombined to form the support unit and/or the counter-pressure bracket.
Furthermore, the assembled bracket is including installing the main bracket of pier both sides, installing distribution beam on the main bracket and installing the flange board spandrel girder of No. 0 piece both sides, the main bracket includes bracket crossbeam and bracket sloping, bracket crossbeam and bracket sloping can dismantle through the connecting piece by a plurality of member and connect the constitution.
Further, the connecting piece is a flange.
Further, the construction method of the integrated structure of the non-landing overlong assembled bracket and the hanging basket comprises the following steps:
pre-constructing a pier column, and installing an embedded part and an assembled bracket;
constructing a No. 0 block, installing the assembly type bracket, the unloading device, the bent frame, the assembly type construction platform and the channel, checking and accepting after the installation, installing a template, binding steel bars and positioning and installing a prestressed pipeline after an experience folding lattice, checking and accepting after the installation, and pouring the No. 0 block after the acceptance is qualified;
after the number 0 block is poured, the fabricated brackets are disassembled and recombined to form the support units and/or the counter-pressure brackets;
constructing a hanging basket module, and installing the bracket unit, the transverse parallel connection and the template;
and (5) hanging basket prepressing construction, namely installing the back pressure bracket, the pad beam and hanging basket prepressing after the installation is finished.
Further, the mounting process of the assembly type bracket specifically comprises the following steps:
and assembling the rod pieces into the main brackets through fasteners, integrally hoisting a plurality of the main brackets, connecting the main brackets through parallel connection, and installing a plurality of the distribution beams and a plurality of the flange plate bearing beams after the connection is finished.
Further, the mounting of the bracket unit is specifically as follows:
dismantling the assembled brackets, installing a plurality of main brackets at the top of the No. 0 block to form a plurality of main trusses, connecting the main trusses in a parallel connection manner, and dismantling and recombining the distribution beam and the flange plate bearing beam to form the upper cross beam and the bottom basket cross beam.
Further, the installation of the counter-pressure bracket is specifically:
in the steel bar binding process, two groups of cone embedded parts are climbed in the vertical arrangement in the installation on the No. 0 block, after the construction of the No. 0 block is completed, the main bracket is integrally disassembled and then installed the cradle module, and after the installation of the cradle module is completed, the main bracket and the assembled bracket are hoisted to the two groups of cone embedded parts to form the assembled back pressure bracket.
Further, during No. 0 piece construction, a set of awl built-in fitting of climbing is installed on No. 0 piece climb the pre-buried finish rolling screw-thread steel in awl built-in fitting below and reserve out the connector, then install hang the basket module, hang the basket module installation and accomplish the back climb awl built-in fitting department installation the assembled bracket to it is right to use the interlinkage sleeve the finish rolling screw-thread steel lengthens.
Further, the mounting of the counter-pressure bracket is embodied as follows.
And after the construction of the No. 0 block is completed, disassembling the assembly type bracket, decomposing the main bracket into a bracket beam and a bracket oblique beam, and assembling the bracket oblique beam and the finish-rolled deformed steel bar to form a combined type back pressure bracket.
The invention has the beneficial effects that: this application makes the material can reuse through dismantling the support unit and the back pressure bracket that the reorganization constitutes the hanging basket with assembled bracket, reduces construction cost, does not need additionally to process production support unit and back pressure bracket simultaneously, has reduced construction cycle.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a fabricated bracket according to an embodiment of the present application.
FIG. 3 is a cross-sectional view of the bracket structure shown in FIG. 2;
FIG. 2 is a schematic structural view of a rack unit according to the present embodiment;
fig. 4 is a flowchart of a construction method of a non-landing ultra-long fabricated bracket and hanging basket integrated structure according to an embodiment of the present application.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 to 3, the non-landing ultra-long fabricated bracket and cradle integrated structure according to an embodiment of the present invention includes a No. 0 block 1, a fabricated bracket (not numbered), a cradle module (not shown), and a counter-pressure bracket (not shown), where the No. 0 block 1 is poured on a pier (not numbered) to serve as an operation platform for assembling and constructing the cradle module; the assembly type brackets are arranged on two sides of the bridge pier and are used for supporting the casting of the No. 0 block 1; the cradle module comprises a support unit 4, wherein the support unit 4 comprises a plurality of main trusses 41 arranged at the tops of the No. 0 blocks, upper cross beams 42 arranged on the main trusses 41 and bottom basket cross beams 43 arranged at the bottoms of the No. 0 blocks 1; the back pressure brackets are arranged on two sides of the No. 0 block 1 and used for back pressure prepressing of the hanging basket module, and after pouring of the No. 0 block 1 is completed, the assembly type brackets are disassembled and recombined to form the support units 4 and/or the back pressure brackets. Through dismantling the assembled bracket that will pour for supporting number 0 piece and reorganize, constitute the back pressure bracket that is used for supporting the support unit of hanging basket module installation and construction and is used for testing hanging basket module, make full use of material, and need not additionally to spend each branch frame of time production, shorten construction cycle, strengthened the commonality of each part structure.
The assembly type bracket 2 comprises main brackets 21 arranged on two sides of the bridge pier, distribution beams 22 arranged on the main brackets 21 and flange plate bearing beams 23 arranged on two sides of the No. 0 block 1, wherein each main bracket 21 comprises a bracket cross beam 211 and a bracket oblique beam 212, and the bracket cross beam 211 and the bracket oblique beam 212 are formed by detachably connecting a plurality of rod pieces (not shown) through connecting pieces (not shown). In this embodiment, the connecting piece is a flange, the flange is convenient to detach, the strength is high, the sealing performance is good, and in other embodiments, the rod pieces can be connected in other connection modes, such as threaded connection, which is not limited herein.
The construction method of the integrated structure of the non-landing overlong assembled bracket and the hanging basket comprises the following steps:
s1: and pre-constructing the pier stud, and installing an embedded part and an assembled bracket.
S2: construction of No. 0 piece, installation assembled bracket, the device that unloads, framed bent, assembled construction platform and passageway, the installation is accomplished and is tested the acceptance, and experience is closed and is carried out template installation, reinforcement and prestressing force pipeline location installation after the check, and the installation is accomplished and is tested the acceptance, pours after testing the acceptance is qualified No. 0 piece.
In this embodiment, according to the integrated construction requirement of the bracket and the hanging basket, considering the related construction conditions and the installation and detachment modes of the assembled bracket and the formwork, the main truss 41 is the rhombic frame 41, and the main bracket 21 is the triangular bracket 21, but in practical application, the support unit 4 and the main bracket 21 may also adopt other structures.
Wherein, the installation step of assembled bracket is: the main bracket 21 is formed by splicing the bracket cross beam 211 and the bracket oblique beam 212 which are assembled as required through fasteners, a plurality of main brackets 21 are integrally hoisted and connected through parallel connection, and after the connection is finished, the distribution beam 22 and the flange plate bearing beam 23 are installed.
Specifically, after the pier stud construction is completed, the standard segment rod pieces are assembled into the integral framework piece of the triangular bracket 21 in a processing field of a construction site according to a design drawing through fasteners. And hoisting the assembled framework pieces, and connecting all the framework pieces into a whole by using parallel connection after hoisting is finished. And a drop-off device (not numbered) and a tray distribution beam 22 are respectively installed on the cross beams at a designed interval. The bent (not shown), the flange plate girder 23, the fabricated construction platform (not shown) and the passage (not shown) are then installed. In the actual construction process, after the steps are completed, the structure, the operating platform, the safety channel and the like of the assembly type bracket need to be checked and accepted. And after acceptance inspection is qualified, template installation, reinforcement binding and prestressed pipeline positioning installation are carried out, after the procedures are completed, corresponding hidden project acceptance inspection is carried out, and after experience collection grids, No. 0 block 1 concrete pouring is carried out.
S3: and after the No. 0 block is poured, the assembly type bracket is disassembled and recombined to form the support unit and/or the counter-pressure bracket. After the number 0 block is poured, the fabricated bracket is disassembled, and then all rod pieces forming the fabricated bracket are matched again and assembled into the support unit and/or the back pressure bracket.
S4: and constructing a hanging basket module, and installing the support unit, the transverse parallel connection and the template.
Specifically, the triangular brackets 21 are recombined into the rhombic frames 41, the distribution beam 22 and the flange plate bearing beam 23 are recombined into the upper beam 42 and the bottom basket beam 43 of the support unit 4, and the rails (not shown), the main girder 41, the transverse parallel connection (not shown), the upper beam 42, the bottom basket beam 43 and the formwork (not shown) are installed one by a tower crane according to the construction process.
S5: and (5) hanging basket prepressing construction, namely installing the back pressure bracket, the pad beam and hanging basket prepressing after the installation is finished.
In this embodiment, among the reinforcement bar ligature process, two sets of awl built-in fittings (not shown in the drawing) of climbing that arrange about installation on No. 0 piece 1, after No. 0 piece 1 construction is accomplished, with the whole dismantlement of triangular bracket 21, the installation after that hang the basket module, after hanging the basket module installation, will triangular bracket 21 and prefabricated assembled bracket (not shown in the drawing) hoist and mount to two sets of awl built-in fittings and be in place constitute assembled backpressure bracket.
Specifically, after the construction of the No. 0 block 1 is completed, the triangular bracket 21 is detached, and after the hanging basket module is installed, the triangular bracket 21 is hoisted to the position of the prefabricated bracket to form the back pressure bracket. The structure comprises a prefabricated bracket, a bracket inclined rod 212, a bracket cross rod 211, a pad beam (not shown), a pre-pressing jack (not shown) and a flange plate bearing beam 23 from top to bottom in sequence. Anchoring the prefabricated bracket on a No. 0 web plate (not numbered) by using a high-strength bolt, placing a flange plate bearing beam 23 on a bottom basket of the cradle, placing a jack on the flange plate bearing beam 23, finally placing a pad beam on the jack as an adjusting block, integrally hoisting the disassembled triangular bracket 21 to the position of the prefabricated bracket by using hoisting equipment, installing the triangular bracket 21 on the prefabricated bracket by using a connecting pin shaft, connecting the flexible triangular bracket 21 by using a parallel connection, finally starting the jack to carry out cradle hanging operation, and after pre-pressing is completed, sequentially dismantling the bracket diagonal rod 212, the bracket transverse rod 211, the pad beam, the jack, the flange plate bearing beam 23 and the prefabricated bracket.
In another embodiment, the bracket stringer 212 and finish-rolled deformed steel (not shown) are assembled to form a combined counter-pressure bracket.
During No. 0 piece 1 construction, a set of awl built-in fitting (not shown) of climbing is installed on No. 0 piece 1 climb the pre-buried finish rolling screw-thread steel in awl built-in fitting below and reserve out the connector, install after that hang the basket module, hang the basket module installation and accomplish the back climb prefabricated assembled bracket of awl built-in fitting department installation (not shown) to it is right to use interlinkage sleeve (not shown) the finish rolling screw-thread steel lengthens. After the construction of the No. 0 block 1 is completed, the assembly type bracket is disassembled, the triangular bracket 21 is decomposed into the bracket cross beam 211 and the bracket oblique beam 212, and the bracket oblique beam 212 and the finish-rolled deformed steel bar lengthened by the connecting sleeve are assembled to form the combined type counter pressure bracket.
Specifically, the installation is performed from bottom to top, the flange plate load-bearing beam 23 is first placed above a bottom longitudinal beam (not numbered) for connecting the bottom basket cross beam 43, then a jack (not shown) is placed on the flange plate load-bearing beam 23, a steel plate (not shown) with the size of 70 × 70cm and the thickness of 2cm is placed on the top of the jack, and a pad beam (not shown) with a proper size is fully laid on the steel plate. The finish rolled deformed steel bar is lengthened by means of a connecting sleeve and passed through the prefabricated bracket, fixed in place by means of a threaded fastener (not shown), and finally the bracket diagonal 212 is connected to the prefabricated bracket by means of a pin shaft, completing the installation of the combined counter pressure bracket. And starting the jack to carry out hanging basket back pressure operation, and after the prepressing is completed, dismantling the bracket diagonal rod 213, the finish rolling deformed steel bar, the pad beam, the jack, the flange plate bearing beam 23 and the prefabricated bracket in sequence.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. The utility model provides a no super long assembled bracket that falls to ground and hang basket integral structure which characterized in that includes:
the number 0 block is poured on a pier and serves as an operation platform for assembling and constructing the cradle module;
the assembly type brackets are arranged on two sides of the bridge pier and support the No. 0 block to be poured;
the cradle module comprises a support unit, wherein the support unit comprises a plurality of main trusses arranged at the tops of the No. 0 blocks, an upper cross beam arranged on the main trusses and a bottom basket cross beam arranged at the bottoms of the No. 0 blocks; and
the back pressure brackets are arranged on two sides of the No. 0 block and are used for back pressure prepressing of the cradle module;
and after the No. 0 block is poured, the assembly type bracket is disassembled and recombined to form the support unit and/or the counter-pressure bracket.
2. The integrated structure of a floor-free super-long assembly type bracket and hanging basket of claim 1, wherein the assembly type bracket comprises main brackets installed on two sides of the pier, distribution beams installed on the main brackets and flange plate bearing beams installed on two sides of the No. 0 block, each main bracket comprises a bracket cross beam and a bracket oblique beam, and each bracket cross beam and each bracket oblique beam are formed by detachably connecting a plurality of rod pieces through connecting pieces.
3. The integrated structure of a floor-less overlength assembly tray and pannier of claim 2, wherein said connector is a flange.
4. A construction method of the integrated structure of the assembly bracket and the hanging basket without falling to the ground and with super long length as claimed in any one of claims 1 to 3, which comprises the following steps:
pre-constructing a pier column, and installing an embedded part and an assembled bracket;
constructing a No. 0 block, installing the assembly type bracket, the unloading device, the bent frame, the assembly type construction platform and the channel, checking and accepting after the installation, installing a template, binding steel bars and positioning and installing a prestressed pipeline after an experience folding lattice, checking and accepting after the installation, and pouring the No. 0 block after the acceptance is qualified;
after the number 0 block is poured, the fabricated brackets are disassembled and recombined to form the support units and/or the counter-pressure brackets;
constructing a hanging basket module, and installing the bracket unit, the transverse parallel connection and the template;
and (5) hanging basket prepressing construction, namely installing the back pressure bracket, the pad beam and hanging basket prepressing after the installation is finished.
5. The integrated construction method of the floor-free overlong assembly type bracket and the hanging basket according to claim 4, wherein the assembly type bracket is installed in a process that:
and assembling the rod pieces into the main brackets through fasteners, integrally hoisting a plurality of the main brackets, connecting the main brackets through parallel connection, and installing a plurality of the distribution beams and a plurality of the flange plate bearing beams after the connection is finished.
6. The integrated construction method of the floor-free overlong assembled bracket and the hanging basket according to claim 5, wherein the mounting of the bracket unit is specifically as follows:
dismantling the assembled brackets, installing a plurality of main brackets at the top of the No. 0 block to form a plurality of main trusses, connecting the main trusses in a parallel connection manner, and dismantling and recombining the distribution beam and the flange plate bearing beam to form the upper cross beam and the bottom basket cross beam.
7. The integrated construction method of the floor-free overlong fabricated bracket and the hanging basket as claimed in claim 5, wherein the installation of the back pressure bracket is specifically as follows:
in the steel bar binding process, two groups of cone embedded parts are climbed in the vertical arrangement in the installation on the No. 0 block, after the construction of the No. 0 block is completed, the main bracket is integrally disassembled and then installed the cradle module, and after the installation of the cradle module is completed, the main bracket and the assembled bracket are hoisted to the two groups of cone embedded parts to form the assembled back pressure bracket.
8. The integrated construction method of the floor-free super-long assembled bracket and the hanging basket according to claim 4, wherein during construction of the No. 0 block, a set of climbing cone embedded parts are installed on the No. 0 block, finish rolling deformed steel bars are embedded below the climbing cone embedded parts, connectors are reserved, then the hanging basket module is installed, after the hanging basket module is installed, the assembled bracket is installed at the climbing cone embedded parts, and the finish rolling deformed steel bars are lengthened through the linking sleeves.
9. The integrated construction method of the floor-free super-long assembly type bracket and the hanging basket as claimed in claim 8, wherein the installation of the back pressure bracket is specifically.
And after the construction of the No. 0 block is completed, disassembling the assembly type bracket, decomposing the main bracket into a bracket beam and a bracket oblique beam, and assembling the bracket oblique beam and the finish-rolled deformed steel bar to form a combined type back pressure bracket.
CN202111214994.3A 2021-10-19 2021-10-19 Non-landing super-long assembly type bracket and hanging basket integrated structure and construction method Pending CN113818362A (en)

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CN114790705A (en) * 2022-04-22 2022-07-26 山东交通学院 Short zero block prestressed concrete continuous beam bridge hanging basket structure and construction method
CN114808667A (en) * 2022-05-30 2022-07-29 中建七局交通建设有限公司 Supporting structure suitable for No. 0 block of rigid frame bridge and construction method of supporting structure

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CN212505875U (en) * 2020-05-26 2021-02-09 中国建筑第四工程局有限公司 Pier top back pressure structure of No. 0 block triangular bracket of rigid frame bridge
CN112647427A (en) * 2021-02-06 2021-04-13 中铁十二局集团有限公司 Continuous beam cantilever casting two-stage real-time counterweight system and construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114790705A (en) * 2022-04-22 2022-07-26 山东交通学院 Short zero block prestressed concrete continuous beam bridge hanging basket structure and construction method
CN114808667A (en) * 2022-05-30 2022-07-29 中建七局交通建设有限公司 Supporting structure suitable for No. 0 block of rigid frame bridge and construction method of supporting structure

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Application publication date: 20211221