CN114953122A - Cast-in-place multi-functional concatenation mould of small radius curve beam bridge - Google Patents
Cast-in-place multi-functional concatenation mould of small radius curve beam bridge Download PDFInfo
- Publication number
- CN114953122A CN114953122A CN202210698940.7A CN202210698940A CN114953122A CN 114953122 A CN114953122 A CN 114953122A CN 202210698940 A CN202210698940 A CN 202210698940A CN 114953122 A CN114953122 A CN 114953122A
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- Prior art keywords
- template
- movable
- frame
- pull rod
- beam bridge
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- 230000006978 adaptation Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000010485 coping Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/02—Moulds with adjustable parts specially for modifying at will the dimensions or form of the moulded article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
- B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
Abstract
The invention discloses a cast-in-situ multifunctional splicing die for a small-radius curve beam bridge, which comprises a plurality of hoop sleeves sequentially spliced along the height direction, wherein each hoop sleeve comprises a fixed template and a movable template, the fixed template and the movable template are spliced by two symmetrical templates, a supporting frame is arranged in the middle of the outer wall of the fixed template, an adjusting frame is arranged at the top of the outer wall of the movable template, connecting lugs are respectively arranged at two ends of the supporting frame and two ends of the movable frame, a connecting seat is arranged on the supporting frame, a detachable door-shaped pull rod is arranged in the connecting seat, the distance between the door-shaped pull rods is matched with the overlapped size of the two connecting lugs, a lock head is arranged at one end of each door-shaped pull rod, and a plurality of threaded rods for supporting the adjacent adjusting frames are arranged on the supporting frame. According to the invention, by arranging the fixed template, the movable template, the supporting frame and the adjusting frame, the mold making height of the pier column of the curved beam bridge consisting of the fixed template and the movable template can be adjusted by adjusting the distance between the supporting frame and the movable frame so as to correspond to the inclination of the small-radius curved beam bridge.
Description
Technical Field
The invention relates to the field of curved bridge molds, in particular to a cast-in-place multifunctional splicing mold for a small-radius curved beam bridge.
Background
The curved bridge is a viaduct with a plane line shape and a certain curve shape, is laid for coping with traffic under complex ground conditions, and is mostly constructed for road section diversion and convergence. The most moulds of pier stud are the staple bolts with fixed length to be prefabricated, and the prefabricated staple bolt length is comparatively unified, when the pier stud is moulded, because the bridge needs certain gradient, the height of every pier stud all differs, the highly inconvenient adjustment of current pier stud to need a mould that can conveniently adjust to deal with the manufacturing of small radius curve bridge.
Disclosure of Invention
The invention aims to provide a cast-in-situ multifunctional splicing mould for a small-radius curved beam bridge, which can be conveniently adjusted according to the height of a pier stud so as to adapt to the manufacture of the small-radius curved beam bridge.
The purpose of the invention is realized by the following technical scheme:
a cast-in-place multifunctional splicing die for a small-radius curve beam bridge comprises a plurality of hoop sleeves sequentially spliced along the height direction, each hoop sleeve comprises a fixed template and a movable template sleeved inside the fixed template, the fixed template and the movable template are spliced by two symmetrical templates, the spliced fixed template and the spliced movable template are circular or square, a C-shaped supporting frame is horizontally arranged in the middle of the outer wall of the fixed template, a C-shaped adjusting frame is arranged at the top of the outer wall of the movable template, connecting lugs which protrude outwards are respectively arranged at two ends of the supporting frame and the movable frame, a connecting seat is arranged on the outer wall in the middle of the supporting frame, a positioning groove is horizontally processed in the middle of the connecting seat, a detachable door-shaped pull rod is arranged in the positioning groove, the space between the door-shaped pull rods is matched with the overlapped size of the two connecting lugs, and a lock head for fixing the adjacent hoop sleeves is arranged at one end, far away from the connecting seat, of each door-shaped pull rod, and a plurality of threaded rods for supporting the adjacent adjusting frames are arranged on the supporting frame.
A limiting groove is vertically processed on the fixed template above the supporting frame, a limiting pin extending into the limiting groove is installed on the outer wall of the middle part of the movable template, and a locking nut is connected to the limiting pin on the outer side of the fixed template through threads.
The wall thickness of the movable template below the limiting pin is gradually reduced from top to bottom.
The tapered end is characterized in that clamping tooth surfaces are processed on the side walls, back to back, of the door-shaped pull rod, the tapered end is splayed, two through holes matched with the profile of the door-shaped pull rod are processed on the tapered end, friction surfaces matched with the clamping tooth surfaces are arranged on the inner walls of the through holes, and a hammering portion is arranged in the middle of the tapered end.
And a clamping groove matched with the profile of the adjacent fixed template is processed at the top of the adjusting frame.
And the support frame is provided with a connecting column fixedly connected with the scaffold.
The cast-in-situ multifunctional splicing mould for the small-radius curve beam bridge has the beneficial effects that:
(1) by arranging the fixed template, the movable template, the supporting frame and the adjusting frame, the mold making height of a pier column of a curved beam bridge consisting of the fixed template and the movable template can be adjusted by adjusting the distance between the supporting frame and the movable frame so as to correspond to the inclination of the small-radius curved beam bridge to make, and meanwhile, the mold making efficiency can be improved by arranging the door-shaped pull rod and the lock head;
(2) by arranging the threaded rod on the supporting frame, on one hand, the length of the hoop sleeve can be conveniently adjusted, and on the other hand, supporting force can be provided for the adjusting frame so as to ensure the stability of the movable template;
(3) by processing the limiting groove on the fixed template and arranging the limiting pin on the movable template, the spacing between the fixed template and the movable template can be reduced and the connection stability of the fixed template and the movable template can be improved by utilizing the matching of the limiting pin and the limiting groove;
(4) the wall thickness of the movable template below the limiting pin is gradually reduced, so that the surface of the formed pier stud can be flat and straight, and the attractive appearance of the pier stud is ensured;
(5) the clamping tooth surface is processed on the door-shaped pull rod, and the adjacent hoop sleeves can be conveniently locked by knocking the hammering part by matching with the friction surface and the hammering part on the lock head, so that the molding efficiency is improved;
(6) through setting up the spliced pole, can make things convenient for being connected of scaffold frame and staple bolt cover, can also further improve the stability of mould through the scaffold frame.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram provided in an embodiment of the present invention.
Fig. 2 is a schematic top view of a square mold according to an embodiment of the present invention.
Fig. 3 is a schematic top view of a circular mold according to an embodiment of the present invention.
Fig. 4 is a schematic view of a connection structure between a door-shaped pull rod and a lock head according to an embodiment of the present invention.
Fig. 5 is a schematic view of a use state provided by the embodiment of the present invention.
Reference numerals: 1. fixing the template; 11. a limiting groove; 2. a movable template; 21. a spacing pin; 22. locking the nut; 3. a support frame; 31. a connecting seat; 32. positioning a groove; 33. connecting columns; 4. an adjusting frame; 41. a card slot; 5. connecting lugs; 6. a door-shaped pull rod; 61. a tooth clamping surface; 7. a lock head; 71. a port; 72. a friction surface; 73. a hammering portion; 8. a threaded rod.
Detailed Description
Examples
As shown in fig. 1 to 4, the cast-in-place multifunctional splicing mold for a small-radius curved beam bridge provided by this embodiment includes a plurality of hoop covers sequentially spliced in a height direction, adjacent hoop covers are installed by rotating for 90 degrees, the hoop covers include a fixed template 1 and a movable template 2 sleeved inside the fixed template 1, the fixed template 1 and the movable template 2 are formed by splicing two symmetric templates so as to be convenient for disassembling the mold, the spliced fixed template 1 and the movable template 2 are both circular or square to be used for coping with pier stud molds of different shapes, the square template is C-shaped, a C-shaped support frame 3 is horizontally installed in the middle of the outer wall of the fixed template 1, a C-shaped adjusting frame 4 is installed on the top of the outer wall of the movable template 2, outwardly convex connecting lugs 5 are installed at both ends of the support frame 3 and the movable frame, and the outwardly convex connecting lugs 5 are used for facilitating the support frame 3 and the movable frame to enclose a closed structure, in order to support the fixed template 1 and the movable template 2, the outer wall of the middle part of the support frame 3 is provided with a connecting seat 31, the middle part of the connecting seat 31 is horizontally processed with a positioning groove 32, a detachable door-shaped pull rod 6 is installed in the positioning groove 32, the door-shaped pull rod 6 can be conveniently hung and placed when being installed through the positioning groove 32, the distance between the door-shaped pull rod 6 and the size of the overlapping of the two connecting lugs 5 is matched, one end of the door-shaped pull rod 6, far away from the connecting seat 31, is provided with a lock head 7 for fixing the adjacent hoop sleeve, the door-shaped pull rod 6 can close the two connecting lugs 5 on the support frame 3 and the adjusting frame 4 on the adjacent hoop sleeve under the action of the lock head 7, on one hand, the stability of the hoop sleeve connection is improved, on the other hand, the stability of the adjacent hoop sleeve connection is improved, the movable template 2 is adjusted to correspond to the mold making of pier columns with different lengths, the support frame 3 is provided with a plurality of threaded rods 8 for supporting the adjacent adjusting frame 4, after the threaded rod 8 rotates in place, the movable frame can be prevented from falling by utilizing the threads, so that the length of the hoop sleeve is fixed.
In order to further improve the stability that fixed die plate 1 and movable die plate 2 are connected, as shown in fig. 1, vertical processing spacing groove 11 on the fixed die plate 1 of carriage 3 top, install the spacer pin 21 that stretches into in the spacing groove 11 on the outer wall at 2 middle parts of movable die plate, threaded connection has lock nut 22 on the spacer pin 21 in the fixed die plate 1 outside, lock nut 22 can be connected with fixed die plate 1 after movable die plate 2 removes to target in place, simultaneously under the cooperation of spacing groove 11 and spacer pin 21, steerable movable die plate 2's removal size to improve the stability of embracing the hoop cover. In order to enable the movable template 2 to influence the profile of the pier stud after the pier stud is formed, the wall thickness of the movable template 2 below the limiting pin 21 is gradually reduced from top to bottom, and the movable template 2 with the gradually reduced thickness can enable the profile of the surface of the pier stud to be smooth. In addition, the wall thickness of the movable template 2 can be reduced.
In order to simplify the splicing of the adjacent hoop covers, as shown in fig. 4, the side wall of the door-shaped pull rod 6 opposite to the side wall is provided with a latch surface 61, the lock head 7 is in a splayed shape, the lock head 7 is provided with two through holes 71 matched with the profile of the door-shaped pull rod 6, the inner wall of each through hole 71 is provided with a friction surface 72 matched with the latch surface 61, the middle part of the lock head 7 is provided with a hammering part, when the lock head 7 is installed, the friction surface 72 on the lock head 7 and the latch surface 61 on the door-shaped pull rod 6 are matched with and clamped on the connecting lug 5 on the adjacent hoop cover, the adjacent hoop covers can be folded, the stability of the connection with the adjacent hoop covers can be improved under the action of the door-shaped pull rod 6, when the mold is removed, the lock head 7 and the door-shaped pull rod 6 can be separated by knocking the two ends of the lock head 7, so as to improve the mold removal efficiency, after the lock head 7 is installed on the door-shaped pull rod 6, the tension between the lock 7 and the door-shaped pull rod 6 is used for fixedly connecting the adjacent hoop sleeves, and the clamping force between the two arms of the door-shaped pull rod 6 is used for fixing the adjacent connecting lugs 5, so that the connecting lugs 5 can be prevented from being separated under the action of the lock 7, and the pier stud is prevented from expanding when being cast.
In order to facilitate the connection of the adjacent hoop sleeves, as shown in fig. 1 to 3, a clamping groove 41 matched with the profile of the adjacent fixed template 1 is processed at the top of the adjusting frame 4, so that the splicing of the mold is facilitated, and the traditional mode of threaded connection between the hoop sleeves can be omitted.
In order to facilitate the molding operation, a scaffold needs to be built on the outer wall of the mold, the scaffold can facilitate the construction of workers and provide supporting force for the mold, as shown in fig. 1-3, a connecting column 33 fixedly connected with the scaffold is installed on the supporting frame 3, and the connecting column 33 can be conveniently connected with a disc buckle on the scaffold.
The using method of the invention is as follows:
when in use, as shown in fig. 5, two supporting frames 3 and two adjusting frames 4 are enclosed, a fixed template 1 on the supporting frame 3 and a movable template 2 on the adjusting frame 4 are enclosed to form a model matched with the profile of the small-radius curve beam pier stud, then a next hoop sleeve is arranged above the movable frame, the next hoop sleeve is horizontally rotated by 90 degrees when being arranged, a connecting lug 5 on the next hoop sleeve is aligned with a connecting seat 31 on the positioned hoop sleeve, then the bottom of the fixed template 1 on the downward moving hoop sleeve is inserted into a clamping groove 41 on the adjusting frame 4, then a door-shaped pull rod 6 is inserted into a positioning groove 32 of the connecting seat 31, and the door-shaped pull rod 6 is rotated, so that the connecting lug 5 on the adjacent hoop sleeve is arranged at the inner side of the door-shaped pull rod 6, the door-shaped pull rod 6 clamps the connecting lug 5 to prevent the connecting lug from opening, after the door-shaped pull rod 6 is arranged, a lock 7 is arranged at the opening of the door-shaped pull rod 6, when the lock head 7 is installed, the hammering portion 73 is knocked through the hammer, the lock head 7 can be made to move towards the door-shaped pull rod 6, the connecting lugs 5 on the adjacent hoop sleeves are tightened by the aid of the lock head 7, meanwhile, the friction surfaces 72 on the lock head 7 are matched with the clamping tooth surfaces 61 on the door-shaped pull rod 6 to improve the stability of connection of the door-shaped pull rod 6 and the lock head 7, and accordingly the stability of connection of the adjacent hoop sleeves is guaranteed, when angle adjustment is needed, the threaded rod 8 is rotated, the threaded rod 8 is used for supporting the adjusting frame 4 to move upwards, the length of the hoop sleeves is extended, the pier stud length adjusting effect is achieved, after the adjusting frame 4 moves upwards, the locking nut 22 is rotated, the fixed template 1 and the movable template 2 are fixed through cooperation of the locking nut 22 and the limiting pin 21, the stability of the hoop sleeves is improved, and finally, the braided steel reinforcement cage is hoisted into the hoop sleeves through a crane, and concrete is cast.
When the form is demolished, strike 7 both ends of tapered end and can make tapered end 7 and door type pull rod 6 separation, pull down door type pull rod 6 after the separation, the engaging lug 5 that adjacent staple bolt sheathes this moment in does not receive the power, utilizes nail hammer or crowbar to prize engaging lug 5, can accomplish the work of demolishing to improve the small radius curve beam bridge speed of demolishing concrete implementation mode: the shape and configuration of the invention should be described with reference to the accompanying drawings, the embodiments should be consistent with the technical solutions, and the technical features of the claims should be given detailed description to support the claims. Reference numerals in the drawings shall be written after corresponding part names to enable those skilled in the art to understand and realize, if necessary, the operation procedures or operation steps thereof. .
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the scope of the present invention. It should be noted that structures or components illustrated in the drawings are not necessarily drawn to scale, and descriptions of well-known components and processing techniques and procedures are omitted to avoid unnecessarily limiting the invention.
Claims (6)
1. The utility model provides a cast-in-place multi-functional concatenation mould of little radius curve beam bridge, includes a plurality of staple bolt covers that splice in proper order along direction of height, its characterized in that: the staple bolt cover includes fixed die plate and the movable mould board of suit inside fixed die plate, fixed die plate and movable mould board are constituteed by the template concatenation of two symmetries, and fixed die plate after the concatenation is circular or square with the movable mould board, and fixed die plate outer wall middle part horizontal installation has the carriage of C type, and the regulation frame of C type is installed at movable mould board outer wall top, and outside convex engaging lug is all installed at carriage and movable frame both ends, be equipped with the connecting seat on the outer wall at carriage middle part, connecting seat middle part horizontal processing has the constant head tank, installs in the constant head tank and to dismantle door type pull rod, the interval of door type pull rod and the size adaptation that two engaging lugs overlap, door type pull rod keep away from connecting seat one end and install the tapered end of fixed adjacent hoop cover, install the many threaded rods that support adjacent regulation frame on the carriage.
2. The cast-in-place multifunctional splicing mould for the small-radius curved beam bridge as claimed in claim 1, wherein: a limiting groove is vertically processed on the fixed template above the supporting frame, a limiting pin extending into the limiting groove is installed on the outer wall of the middle part of the movable template, and a locking nut is connected to the limiting pin on the outer side of the fixed template through threads.
3. The cast-in-place multifunctional splicing mould for the small-radius curved beam bridge as claimed in claim 2, wherein: the wall thickness of the movable template below the limiting pin is gradually reduced from top to bottom.
4. The cast-in-place multifunctional splicing mould for the small-radius curved beam bridge as claimed in claim 1, is characterized in that: the tapered end is characterized in that clamping tooth surfaces are processed on the side walls, back to back, of the door-shaped pull rod, the tapered end is splayed, two through holes matched with the profile of the door-shaped pull rod are processed on the tapered end, friction surfaces matched with the clamping tooth surfaces are arranged on the inner walls of the through holes, and a hammering portion is arranged in the middle of the tapered end.
5. The cast-in-place multifunctional splicing mould for the small-radius curved beam bridge as claimed in claim 1, wherein: and a clamping groove matched with the profile of the adjacent fixed template is processed at the top of the adjusting frame.
6. The cast-in-place multifunctional splicing mould for the small-radius curved beam bridge as claimed in claim 1, wherein: and the support frame is provided with a connecting column fixedly connected with the scaffold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210698940.7A CN114953122B (en) | 2022-06-20 | 2022-06-20 | Cast-in-situ multifunctional splicing die for small-radius curved beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210698940.7A CN114953122B (en) | 2022-06-20 | 2022-06-20 | Cast-in-situ multifunctional splicing die for small-radius curved beam bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114953122A true CN114953122A (en) | 2022-08-30 |
| CN114953122B CN114953122B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210698940.7A Active CN114953122B (en) | 2022-06-20 | 2022-06-20 | Cast-in-situ multifunctional splicing die for small-radius curved beam bridge |
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| Country | Link |
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| CN (1) | CN114953122B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100516109B1 (en) * | 2005-01-31 | 2005-09-21 | 주식회사 종합건축사사무소 남양 | Sheeting frame of pier for building |
| CN104878686A (en) * | 2015-06-04 | 2015-09-02 | 北京市市政工程研究院 | Device for preventing curved beam bridge from horizontal displacement and construction method thereof |
| CN204875485U (en) * | 2015-06-04 | 2015-12-16 | 北京市市政工程研究院 | Device for preventing curve beam bridge level side is moved |
| CN105839542A (en) * | 2016-05-04 | 2016-08-10 | 中国十九冶集团有限公司 | High bridge pier self-lifting outer frame over-form device |
| KR20190068679A (en) * | 2017-12-09 | 2019-06-19 | 권형규 | A Form for Bridge Girder Using wrinkled straight form units, Girder and Bridge construction methods by it |
| CN110983981A (en) * | 2019-12-18 | 2020-04-10 | 中交第一航务工程局有限公司 | Supporting method for assembled building template |
| CN211949593U (en) * | 2020-01-20 | 2020-11-17 | 四川路航建设工程有限责任公司 | Bridge pier column template system |
| CN114370007A (en) * | 2022-02-25 | 2022-04-19 | 浙江工业大学 | Steel diaphragm beam small-radius curve beam bridge assembling construction template and construction method |
| CN216689042U (en) * | 2021-09-29 | 2022-06-07 | 武汉市至和路桥钢模板制造有限公司 | Dysmorphism pier stud template reinforced structure convenient to installation |
-
2022
- 2022-06-20 CN CN202210698940.7A patent/CN114953122B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100516109B1 (en) * | 2005-01-31 | 2005-09-21 | 주식회사 종합건축사사무소 남양 | Sheeting frame of pier for building |
| CN104878686A (en) * | 2015-06-04 | 2015-09-02 | 北京市市政工程研究院 | Device for preventing curved beam bridge from horizontal displacement and construction method thereof |
| CN204875485U (en) * | 2015-06-04 | 2015-12-16 | 北京市市政工程研究院 | Device for preventing curve beam bridge level side is moved |
| CN105839542A (en) * | 2016-05-04 | 2016-08-10 | 中国十九冶集团有限公司 | High bridge pier self-lifting outer frame over-form device |
| KR20190068679A (en) * | 2017-12-09 | 2019-06-19 | 권형규 | A Form for Bridge Girder Using wrinkled straight form units, Girder and Bridge construction methods by it |
| CN110983981A (en) * | 2019-12-18 | 2020-04-10 | 中交第一航务工程局有限公司 | Supporting method for assembled building template |
| CN211949593U (en) * | 2020-01-20 | 2020-11-17 | 四川路航建设工程有限责任公司 | Bridge pier column template system |
| CN216689042U (en) * | 2021-09-29 | 2022-06-07 | 武汉市至和路桥钢模板制造有限公司 | Dysmorphism pier stud template reinforced structure convenient to installation |
| CN114370007A (en) * | 2022-02-25 | 2022-04-19 | 浙江工业大学 | Steel diaphragm beam small-radius curve beam bridge assembling construction template and construction method |
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| Publication number | Publication date |
|---|---|
| CN114953122B (en) | 2023-12-15 |
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