CN114622492B - Ultrahigh hollow thin-wall pier large-section diaphragm plate and construction method - Google Patents
Ultrahigh hollow thin-wall pier large-section diaphragm plate and construction method Download PDFInfo
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- CN114622492B CN114622492B CN202210350447.6A CN202210350447A CN114622492B CN 114622492 B CN114622492 B CN 114622492B CN 202210350447 A CN202210350447 A CN 202210350447A CN 114622492 B CN114622492 B CN 114622492B
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 238000011065 in-situ storage Methods 0.000 claims abstract description 21
- 238000004873 anchoring Methods 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 230000009191 jumping Effects 0.000 claims description 3
- 238000009417 prefabrication Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
Abstract
A pier column diaphragm plate of a flat plate structure is split into a strip diaphragm beam and a diaphragm plate cast-in-situ part, the diaphragm beam is prefabricated on the ground in a lattice-jumping mode, reserved steel bars are arranged on the periphery of the diaphragm beam, a hoisting ring is arranged at the top of the diaphragm beam, the diaphragm beams are sequentially arranged on inner chamfers of the hollow thin-wall pier, and the width of the diaphragm plate cast-in-situ part is reserved between adjacent diaphragm beams; the transverse reserved steel bars of the adjacent diaphragm beams are connected by adopting connecting steel bars, and then an anchoring beam, an anchoring bolt, a pull rod and a bottom template buckled at the bottoms of the two adjacent prefabricated diaphragm beams are used for forming a diaphragm cast-in-place part casting space, and a diaphragm cast-in-place part concrete is cast to form a complete diaphragm with an ultrahigh hollow thin-wall pier large cross section. By adopting the method for diaphragm construction, the single hoisting weight is reduced, and a bracket or other supporting systems are not required to be additionally erected, so that the construction cost is reduced, and the construction period is saved.
Description
Technical field:
the invention belongs to the technical field of construction engineering concrete construction, in particular to the technical field of construction of hollow thin-wall piers of highway and railway bridges, and particularly relates to the technical field of construction of large-section diaphragm plates of ultrahigh hollow thin-wall piers.
The background technology is as follows:
along with the rapid development of high speed and high iron in China, the bridge construction level is gradually improved. In the design of mountain area bridge, often there will be the appearance of superelevation mound, in superelevation hollow thin wall mound, often can set up the diaphragm to reinforcing pier stud's wholeness, stability prevent pier stud unstability. The ultra-high hollow thin-wall pier diaphragm is different from the prefabricated T-beam diaphragm and the box-beam diaphragm, and the ultra-high hollow thin-wall pier diaphragm is thick in thickness, large in overall size and extremely high in construction difficulty. The conventional pier column diaphragm plate is generally constructed by adopting integral prefabrication and hoisting, or erecting a floor type scaffold inside a hollow pier to serve as a bearing system, or erecting an air supporting platform by adopting materials such as pre-buried brackets, section steel and the like to serve as a supporting system, and then constructing in an integral cast-in-situ mode. Along with the increase of bridge structure size, the conventional mode has the problems of large engineering quantity of auxiliary measures, difficult later disassembly, narrow space in the pier, high safety risk, long construction period and the like. Therefore, a safe, reliable and economical construction method for the ultra-high hollow thin-wall pier diaphragm plate is needed at present.
The invention comprises the following steps:
the invention aims to solve the technical problem of providing a large-section diaphragm plate of an ultrahigh hollow thin-wall pier, which is safe, reliable and economical.
In order to solve the problems, the invention adopts the following technical scheme:
the invention provides a diaphragm plate with a large section of an ultrahigh hollow thin-wall pier, which is of a flat plate structure and is arranged at an inner chamfer of a pier column of a poured part of the hollow thin-wall pier, wherein the diaphragm plate of the flat plate structure is divided into a prefabricated diaphragm beam and a diaphragm plate cast-in-situ part which are uniformly distributed at intervals; the method comprises the steps that a diaphragm beam is prefabricated on the ground in a jumping mode, the diaphragm beam is of a strip-shaped concrete structure, reserved steel bars are arranged on the periphery of the diaphragm beam, lifting rings are arranged at the tops of the diaphragm beam, and the reserved steel bars are reserved with enough welding lengths; the cast-in-situ part of the diaphragm plate is of a strip structure, a certain width is reserved between adjacent diaphragm beams, and finally casting is performed; installing a prefabricated diaphragm Liang Yici on an inner chamfer of the poured part of the hollow thin-wall pier, and leaving the width of the cast-in-place part of the diaphragm in the middle; the transverse reserved steel bars of the adjacent diaphragm beams are connected by adopting connecting steel bars, and then form a diaphragm cast-in-place part casting space by an anchor beam placed at the top of the diaphragm beams, a steel backing plate at the top of the anchor beam, anchor bolts, pull rods and bottom templates buckled at the bottoms of the two adjacent prefabricated diaphragm beams, and cast-in-place part concrete of the diaphragm is cast to form a complete diaphragm with an ultrahigh hollow thin-wall pier large section.
The bottom template is made of a steel plate with delta=10mm.
The hoisting ring arranged on the diaphragm beam is made of HPB300 smooth round steel bars with phi=16mm.
The transverse diaphragm is provided with a plurality of transverse and longitudinal reserved steel bars which are uniformly spaced and symmetrically arranged.
The anchoring beam is made of double-limb [100 channel steel ].
The pull rod is made of finish-rolled deformed steel bar with phi=28mm.
The steel backing plate is made of a steel plate with delta=10mm.
The anchor bolt is a fastening bolt matched with the finish-rolled deformed steel bar.
And a sleeve is sleeved on the pull rod, and the sleeve is made of PVC (polyvinyl chloride) tubes.
A construction method of a diaphragm plate with a large section of an ultrahigh hollow thin-wall pier comprises the following construction steps:
1) Constructing pier columns of the poured parts of the hollow thin-wall piers to the bottom surface of the diaphragm plate, and arranging inner chamfers;
2) Dividing a diaphragm plate of a flat plate structure into a strip-shaped diaphragm beam and a diaphragm plate cast-in-situ part, prefabricating and forming the diaphragm beam on the ground, wherein reserved steel bars are arranged on the periphery of the diaphragm beam, and a hoisting ring is reserved on the top surface of the diaphragm beam;
3) Hoisting and placing the precast beam on the corresponding position of the inner chamfer of the pier column of the poured part of the hollow thin-wall pier after prefabrication of the diaphragm;
4) After the diaphragm beams are installed, the pull rods penetrate through the bottom templates and are screwed by anchor bolts, the whole diaphragm beams obliquely penetrate through cast-in-place parts of the diaphragm plates, and are buckled at the bottoms of two adjacent diaphragm beams; sleeving a sleeve on the pull rod, placing an anchoring beam on the top of the transverse beam, clamping the pull rod, and anchoring the top by adopting a steel backing plate;
5) Connecting adjacent transverse reserved steel bars of the diaphragm beams by adopting connecting steel bars, pouring partial concrete of the diaphragm plates in-situ, and forming a complete diaphragm plate with an ultrahigh hollow thin-wall pier and a large section;
6) And (5) dismantling the pull rod and the anchoring beam, and continuously pouring the non-intersected part of the hollow thin-wall pier of the next section.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the diaphragm plate with the flat plate structure in the original design is split into the strip-shaped structure, the diaphragm is prefabricated into the diaphragm beam in the jumping mode, the diaphragm Liang Zhuge is hoisted in place and is used as a supporting system, the construction difficulty of the diaphragm plate with the large section of the ultrahigh hollow thin-wall pier is solved by adopting a mode of post-pouring construction joints through a hanging die method, and the construction requirement is met.
2. By adopting the invention to construct the diaphragm, the single hoisting weight is greatly reduced, the hoisting capacity requirement of hoisting equipment is reduced, the construction cost is saved, and the safety is improved.
3. According to the invention, a bracket or other supporting systems are not required to be additionally erected, so that the engineering quantity of auxiliary measures is reduced, the construction cost is reduced, and the construction period is saved.
Description of the drawings:
FIG. 1 is a schematic view of the general structure of the present invention;
FIG. 2 is a schematic view of the diaphragm plate of the present invention in a split mode;
FIG. 3 is a cross-sectional view of a prefabricated cross beam of the present invention;
FIG. 4 is a cross-sectional view of a cast-in-place section of a diaphragm plate of the present invention;
FIG. 5 is a plan view of a cast-in-place section of a diaphragm plate of the present invention.
Reference numerals in the drawings:
the casting device comprises a 1-diaphragm plate, a 2-hollow thin-wall pier cast part, a 3-hollow thin-wall pier non-cast part, a 4-hoisting ring, a 5-diaphragm beam, a 6-diaphragm plate cast-in-situ part, a 7-bottom template, 8-reserved steel bars, 9-anchor beams, 10-pull rods, 11-steel backing plates, 12-anchor bolts, 13-sleeves and 14-connecting steel bars.
The specific embodiment is as follows:
the present invention is further described in connection with the following detailed description, which is a further illustration of the principles of the present invention and not in any way intended to limit the invention, nor is the same or similar technique to the present invention beyond the scope of the present invention.
Referring to fig. 1-5, the invention provides a large-section diaphragm plate of an ultrahigh hollow thin-wall pier, wherein the diaphragm plate 1 with the large section is of a flat plate structure, is arranged at an inner chamfer of a pier column of a poured part 2 of the hollow thin-wall pier, the diaphragm plate 1 with the flat plate structure is split into a strip-shaped structure, and is divided into a prefabricated diaphragm beam 5 and a diaphragm plate cast-in-situ part 6, which are uniformly distributed at intervals, the diaphragm beam 5 is a prefabricated member and is of a strip-shaped concrete structure, the diaphragm beam 5 is prefabricated in a ground-lattice mode, a plurality of transverse and longitudinal reserved steel bars 8 are arranged around the diaphragm beam 5, the reserved steel bars 8 are uniformly and symmetrically arranged at intervals, two layers of reserved steel bars 8 are arranged up and down, and enough welding lengths are reserved for the reserved steel bars 8 around the diaphragm beam 5 so as to meet the lap welding length, and the reserved steel bars 8 are horizontal steel bars of the pier column diaphragm plate in the original design. The top of the diaphragm beam 5 is provided with a hoisting ring 4, and the hoisting ring 4 is made of HPB300 plain round steel bars with phi=16mm. The diaphragm cast-in-situ part 6 is of a strip structure, a certain width is reserved between the adjacent diaphragm beams 5, and finally casting is performed. The prefabricated diaphragm beams 5 are sequentially arranged on the inner chamfer angles of the poured part 2 of the hollow thin-wall pier, and the width of the cast-in-situ part 6 of the diaphragm plate is reserved in the middle. The transverse reserved steel bars 8 of the adjacent diaphragm beams 5 are connected by adopting connecting steel bars 14, and then the diaphragm cast-in-situ part 6 casting space is formed by the anchor beams 9 placed at the tops of the diaphragm beams 5, the steel backing plates 11 at the tops of the anchor beams 9, the anchor bolts 12, the pull rods 10 and the bottom templates 7 buckled at the bottoms of the two adjacent prefabricated diaphragm beams 5, and the diaphragm cast-in-situ part 6 concrete is cast to form the diaphragm 1 with a complete ultrahigh hollow thin-wall pier large section.
The construction steps of the large-section diaphragm plate of the ultrahigh hollow thin-wall pier are as follows:
1) The pier column of the poured part 2 of the hollow thin-wall pier is constructed to the position of the bottom surface of the diaphragm plate 1, and an inner chamfer is arranged (see figure 1).
2) Dividing the diaphragm plate 1 with a flat plate structure into a strip-shaped prefabricated diaphragm beam 5 and a diaphragm plate cast-in-situ part 6, prefabricating and forming the diaphragm beam 5 on the ground, and arranging reserved steel bars 8 around the diaphragm beam 5 and reserving a hoisting ring 4 on the top surface.
3) After the diaphragm beam 5 is prefabricated, when the strength and the elastic modulus of the concrete exceed 85% of the design, the prefabricated diaphragm beam 5 is hoisted and placed on the corresponding position of the inner chamfer of the pier column of the poured part 2 of the hollow thin-wall pier through hoisting equipment such as a tower crane (see figure 2).
4) After the diaphragm beams 5 are installed, the pull rod 10 passes through the bottom template 7 and is screwed by adopting the anchor bolts 12, the whole body obliquely passes through the diaphragm cast-in-situ part 6 and is buckled at the bottoms of the two adjacent diaphragm beams 5, the pull rod 10 is made of finish-rolled screw steel with phi=28 mm, the bottom template 7 is made of steel plate with delta=10 mm, and the anchor bolts 12 are fastening bolts matched with the finish-rolled screw steel. The pull rod 10 is sleeved with a sleeve 13, and the sleeve 13 is made of PVC pipe. The anchoring beam 9 is placed on the top of the diaphragm beam 5 and clamps the pull rod 10, the top is anchored by adopting a steel backing plate 11, then the anchoring bolt 12 on the top is fastened (see fig. 4), the anchoring beam 9 is made of double-limb [100 channel steel ], and the steel backing plate 11 is made of delta=10mm steel plate.
5) The transverse reserved steel bars 8 of the adjacent diaphragm beams 5 are connected by adopting connecting steel bars 14, and concrete of the cast-in-situ part 6 of the diaphragm is poured to form the diaphragm 1 with a complete ultrahigh hollow thin-wall pier and large cross section.
6) And removing the pull rod 10 and the anchoring beam 9, and continuously pouring the non-intersected part 3 of the hollow thin-wall pier of the next section.
Claims (10)
1. A large-section diaphragm plate of an ultrahigh hollow thin-wall pier is characterized in that: the diaphragm plate (1) with the large section is of a flat plate structure and is arranged at the inner chamfer of the pier column of the poured part (2) of the hollow thin-wall pier, and the diaphragm plate (1) of the flat plate structure is divided into a prefabricated diaphragm beam (5) and a diaphragm plate cast-in-situ part (6) which are uniformly distributed at intervals; the method comprises the steps that (1) a diaphragm beam (5) is prefabricated on the ground in a jumping mode, the diaphragm beam (5) is of a strip-shaped concrete structure, reserved steel bars (8) are arranged on the periphery of the diaphragm beam (5), a hoisting ring (4) is arranged on the top of the diaphragm beam, and the reserved steel bars (8) are reserved for a sufficient welding length; the diaphragm cast-in-situ part (6) is of a strip structure, a certain width is reserved between adjacent diaphragm beams (5), and finally casting is performed; sequentially installing prefabricated diaphragm beams (5) on the inner chamfer angles of the poured parts (2) of the hollow thin-wall piers, and reserving the width of a diaphragm cast-in-place part (6) in the middle; the transverse reserved steel bars (8) of the adjacent diaphragm beams (5) are connected by adopting connecting steel bars (14), and then the diaphragm plates are cast in place in casting spaces of diaphragm plate cast-in-situ parts (6) through an anchor beam (9) placed at the top of the diaphragm beams (5), a steel backing plate (11) at the top of the anchor beam (9), anchor bolts (12), pull rods (10) and bottom templates (7) buckled at the bottoms of the two adjacent prefabricated diaphragm beams (5), so that a complete diaphragm plate (1) with an ultrahigh hollow thin-wall pier large cross section is formed.
2. The ultra-high hollow thin wall pier large cross section diaphragm according to claim 1, characterized in that: the bottom template (7) is made of a steel plate with delta=10mm.
3. The ultra-high hollow thin wall pier large cross section diaphragm according to claim 1, characterized in that: the hoisting ring (4) arranged on the diaphragm (5) is made of HPB300 smooth round steel bars with phi=16mm.
4. The ultra-high hollow thin wall pier large cross section diaphragm according to claim 1, characterized in that: the transverse diaphragm (5) is provided with a plurality of transverse and longitudinal reserved steel bars (8) which are uniformly spaced and symmetrically arranged.
5. The ultra-high hollow thin wall pier large cross section diaphragm according to claim 1, characterized in that: the anchoring beam (9) is made of double-limb [100 channel steel ].
6. The ultra-high hollow thin wall pier large cross section diaphragm according to claim 1, characterized in that: the pull rod (10) is made of finish rolled deformed steel bar with phi=28mm.
7. The ultra-high hollow thin wall pier large cross section diaphragm according to claim 1, characterized in that: the steel backing plate (11) is made of a steel plate with delta=10mm.
8. The ultra-high hollow thin wall pier large cross section diaphragm according to claim 1, characterized in that: the anchoring bolt (12) is a fastening bolt matched with the finish rolling screw steel.
9. The ultra-high hollow thin wall pier large cross section diaphragm according to claim 1, characterized in that: a sleeve (13) is sleeved on the pull rod (10), and the sleeve (13) is made of PVC (polyvinyl chloride) tubes.
10. A construction method of a diaphragm plate with a large section of an ultrahigh hollow thin-wall pier is characterized by comprising the following steps: the construction steps are as follows:
1) Constructing pier columns of the poured part (2) of the hollow thin-wall pier to the bottom surface of the diaphragm plate (1), and arranging an inner chamfer;
2) Dividing a diaphragm plate (1) with a flat plate structure into a strip-shaped diaphragm beam (5) and a diaphragm plate cast-in-situ part (6), prefabricating and forming the diaphragm beam (5) on the ground, arranging reserved steel bars (8) around the diaphragm beam (5), and reserving a hoisting ring (4) on the top surface;
3) Hoisting and placing the transverse beam (5) at the corresponding position of the inner chamfer of the pier column of the poured part (2) of the hollow thin-wall pier after prefabrication is completed;
4) After the diaphragm beams (5) are installed, a pull rod (10) passes through the bottom template (7) and is screwed by adopting an anchor bolt (12), the whole diaphragm beam passes through the diaphragm cast-in-situ part (6) in an inclined way, and the pull rod is buckled at the bottoms of two adjacent diaphragm beams (5); sleeving a sleeve (13) on the pull rod (10), placing an anchoring beam (9) at the top of the diaphragm beam (5) and clamping the pull rod (10), wherein the top is anchored by adopting a steel backing plate (11);
5) The transverse reserved steel bars (8) of the adjacent diaphragm beams (5) are connected by adopting connecting steel bars (14), and concrete is poured into a cast-in-place part (6) of the diaphragm to form a complete diaphragm (1) with an ultrahigh hollow thin-wall pier and a large cross section;
6) And (3) dismantling the pull rod (10) and the anchoring beam (9), and continuously pouring the non-poured part (3) of the hollow thin-wall pier of the next section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210350447.6A CN114622492B (en) | 2022-04-02 | 2022-04-02 | Ultrahigh hollow thin-wall pier large-section diaphragm plate and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210350447.6A CN114622492B (en) | 2022-04-02 | 2022-04-02 | Ultrahigh hollow thin-wall pier large-section diaphragm plate and construction method |
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| Publication Number | Publication Date |
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| CN114622492A CN114622492A (en) | 2022-06-14 |
| CN114622492B true CN114622492B (en) | 2023-11-10 |
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| CN202210350447.6A Active CN114622492B (en) | 2022-04-02 | 2022-04-02 | Ultrahigh hollow thin-wall pier large-section diaphragm plate and construction method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115787504B (en) * | 2022-12-16 | 2023-09-12 | 中铁二局集团有限公司 | Hanger platform and construction method of hollow tower pier top solid section |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060738A (en) * | 2014-06-30 | 2014-09-24 | 沈阳建筑大学 | Reserved cast-in-situ strip assembly integral concrete floor slab |
| CN108457411A (en) * | 2018-05-31 | 2018-08-28 | 杭州通达集团有限公司 | A kind of laminated floor slab and its construction method of assembled architecture |
| CN109403200A (en) * | 2018-11-22 | 2019-03-01 | 上海市政交通设计研究院有限公司 | The construction method and its small box girder bridge of the small box girder bridge poured after a kind of partition |
| CN113174862A (en) * | 2021-04-29 | 2021-07-27 | 中交路桥建设有限公司 | Construction method of diaphragm plate in high pier and diaphragm plate structure system in high pier |
| CN215104773U (en) * | 2021-07-09 | 2021-12-10 | 中铁十一局集团第五工程有限公司 | Hollow mound baffle of bridge does not have support construction support system |
| CN215889347U (en) * | 2020-11-27 | 2022-02-22 | 广东龙越建筑工程有限公司 | Post-cast strip formwork device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015131334A1 (en) * | 2014-03-04 | 2015-09-11 | 东莞市石西智能机器制造有限公司 | Building structure and construction method for same |
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2022
- 2022-04-02 CN CN202210350447.6A patent/CN114622492B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060738A (en) * | 2014-06-30 | 2014-09-24 | 沈阳建筑大学 | Reserved cast-in-situ strip assembly integral concrete floor slab |
| CN108457411A (en) * | 2018-05-31 | 2018-08-28 | 杭州通达集团有限公司 | A kind of laminated floor slab and its construction method of assembled architecture |
| CN109403200A (en) * | 2018-11-22 | 2019-03-01 | 上海市政交通设计研究院有限公司 | The construction method and its small box girder bridge of the small box girder bridge poured after a kind of partition |
| CN215889347U (en) * | 2020-11-27 | 2022-02-22 | 广东龙越建筑工程有限公司 | Post-cast strip formwork device |
| CN113174862A (en) * | 2021-04-29 | 2021-07-27 | 中交路桥建设有限公司 | Construction method of diaphragm plate in high pier and diaphragm plate structure system in high pier |
| CN215104773U (en) * | 2021-07-09 | 2021-12-10 | 中铁十一局集团第五工程有限公司 | Hollow mound baffle of bridge does not have support construction support system |
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| CN114622492A (en) | 2022-06-14 |
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