CN113279320A - Non-prestressed continuous bridge pier top continuous section assembling structure and construction method thereof - Google Patents
Non-prestressed continuous bridge pier top continuous section assembling structure and construction method thereof Download PDFInfo
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- CN113279320A CN113279320A CN202110476524.8A CN202110476524A CN113279320A CN 113279320 A CN113279320 A CN 113279320A CN 202110476524 A CN202110476524 A CN 202110476524A CN 113279320 A CN113279320 A CN 113279320A
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- prefabricated
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- continuous section
- bridge deck
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- 238000010276 construction Methods 0.000 title claims abstract description 50
- 239000004567 concrete Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 19
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000011065 in-situ storage Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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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
-
- 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- 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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
Abstract
The invention relates to a non-prestressed continuous bridge pier top continuous section assembling structure and a construction method thereof, wherein the non-prestressed continuous bridge pier top continuous section assembling structure comprises two prefabricated main beams, a continuous section and a prefabricated bridge deck. The two prefabricated main beams are connected through the continuous section, the continuous section is arranged between the two prefabricated main beams, the prefabricated bridge deck is arranged at the tops of the two prefabricated main beams, and a wet joint is arranged between the prefabricated bridge deck and the prefabricated main beams and used for filling concrete. And (3) assembling the prefabricated main beam and the prefabricated bridge deck on the construction site, and pouring the continuous section and the wet joint on the site to complete the construction of the non-prestressed continuous bridge. The prefabricated girder and the prefabricated bridge deck slab are prefabricated in a factory, and the problems that the construction period is long, the quality is not easy to control, the influence of the environment is large and the like due to the fact that a large amount of bridge deck slabs need to be prepared on site are solved.
Description
Technical Field
The invention relates to the technical field of bridge structures, in particular to a non-prestressed continuous bridge pier top continuous section splicing structure and a construction method thereof.
Background
With the development of scientific technology and traffic industry, the concrete continuous beam bridge has been rapidly developed in recent years with the unique advantages of convenient construction, economic manufacturing cost, reasonable stress, comfortable driving and the like, and becomes a bridge type with the most competitive medium and small spans. In the construction method of the continuous bridge, the simple continuous construction method is an economic and effective construction method, so the method is widely applied to the construction of small and medium-span bridges in China.
The simple rotary continuous system bridge adopts high tensile concrete to replace a non-prestressed simple support rotary continuous system of pier top hogging moment steel bundles, greatly simplifies the construction process of the bridge, and achieves the purposes of saving cost and shortening period. However, in the construction process of the simple continuous system bridge pier top cast-in-place section, a large number of bridge decks need to be prepared on site, and due to the limitation of site stirring equipment and transportation equipment, the efficiency of preparing the bridge decks on site is low, the quality is not easy to control, and the adverse effects such as large environmental impact are caused.
Disclosure of Invention
Technical problem to be solved
In view of the defects and shortcomings of the prior art, the invention provides a non-prestressed continuous bridge pier top continuous section splicing structure and a construction method thereof, and solves the problems of low construction efficiency and uncontrolled quality caused by field preparation of bridge decks in the prior art.
(II) technical scheme
In order to achieve the aim, the invention provides a non-prestressed continuous bridge pier top continuous section splicing structure and a construction method thereof, and the specific technical scheme is as follows:
the utility model provides a structure is assembled to non-prestressing force continuous bridge mound top continuous section, includes:
two prefabricated main beams;
the continuous section is arranged between the two prefabricated main beams and is used for connecting the two prefabricated main beams;
the prefabricated bridge deck is arranged at the tops of the two prefabricated main beams, wet joints are arranged between the prefabricated bridge deck and the prefabricated main beams, and the wet joints are used for filling concrete.
Further, the prefabricated main beam comprises a main beam web plate and a flange;
the girder web is vertically arranged at the bottom of the flange and is connected with the continuous section.
Furthermore, transverse connecting steel bars are arranged in the web plate and the flange of the main beam;
and transverse connecting reinforcing steel bars in two adjacent main beam webs are respectively connected.
Further, the continuous section is cast and molded on site, and a mounting groove is formed in the connecting position of the continuous section and the prefabricated main beam;
the girder web is arranged in the mounting groove.
Further, the prefabricated bridge deck is also provided with an installation notch, and a steel bar penetrates through the installation notch;
the connecting side of the main girder web plate and the prefabricated bridge deck plate is also provided with a stirrup, and the stirrup is connected with the steel bar in the mounting groove opening.
Furthermore, a transverse steel bar is arranged in the prefabricated bridge deck, and the transverse steel bar extends into the wet joint and is connected with the transverse connecting steel bar in the flange.
Further, the prefabricated bridge deck is made of UHPC ultrahigh-performance concrete.
The invention also provides a construction method of the non-prestressed continuous bridge pier top continuous section assembled structure, which comprises the following steps:
erecting two adjacent prefabricated main beams;
connecting the transverse steel bars between two adjacent prefabricated main beams;
pouring a continuous section between two adjacent prefabricated main beams;
installing a prefabricated bridge deck;
and pouring a wet joint between the prefabricated main beam and the prefabricated bridge deck.
Further, installing the prefabricated bridge deck includes:
connecting the transverse connecting steel bars in the flanges with the transverse steel bars of the prefabricated bridge deck;
connecting stirrups of the main girder web plate and reinforcing steel bars in the mounting groove opening of the prefabricated bridge deck;
and pouring the mounting notches on the prefabricated bridge deck.
(III) advantageous effects
By adopting the non-prestressed continuous bridge pier top continuous section splicing structure and the construction method thereof, the defects of the prior art are effectively overcome.
According to the non-prestressed continuous bridge pier top continuous section assembling structure, the prefabricated main beam and the prefabricated bridge deck are prefabricated and processed in a factory and sent to a construction site, and the prefabricated main beam and the prefabricated bridge deck are assembled in the construction site. The two prefabricated main beams are connected through the continuous sections, the continuous sections are formed in a cast-in-place mode, then the prefabricated bridge deck is assembled, and concrete is poured into wet joints between the prefabricated bridge deck and the prefabricated main beams so as to complete the construction of the non-prestressed continuous bridge. The assembling structure is a structural form with high factory, mechanization and modularization degrees, and the bridge deck is prefabricated in a factory, so that the adverse factors of long construction period, difficulty in quality control, large environmental influence and the like caused by the fact that a large amount of bridge decks are required to be prepared on site are solved.
The invention also provides a construction method of the non-prestressed continuous bridge pier top continuous section assembled structure, and the construction method is simple and low in construction difficulty due to the adoption of the assembled structure of the pier top continuous section, and concrete is not required to be prepared on site, so that the construction process is simplified, the construction period is shortened, the construction efficiency is improved, and the construction cost is greatly reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application, and in which:
FIG. 1 is a schematic structural diagram of a non-prestressed continuous bridge pier top continuous section assembly structure in a specific embodiment;
FIG. 2 is a schematic structural view of a precast main beam in an embodiment;
FIG. 3 is a schematic structural view of a prefabricated bridge deck according to an embodiment;
fig. 4 is a schematic view of construction steps of a non-prestressed continuous bridge pier top continuous section assembly structure in a specific embodiment.
[ description of reference ]
1. Prefabricating a main beam; 11. a flange; 12. a main beam web;
2. a continuous section; 21. installing a groove;
3. prefabricating a bridge deck; 31. installing a notch;
4. transversely connecting reinforcing steel bars; 5. transverse reinforcing steel bars; 6. binding steel bars; 7. wet seaming; 8. and (5) hooping.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present embodiment, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present embodiment.
Referring to fig. 1 to 4, the present embodiment provides a non-prestressed continuous bridge pier top continuous section assembling structure, which includes a prefabricated main girder 1, a continuous section 2 and a prefabricated bridge deck 3. Specifically, two adjacent prefabricated girder 1 are connected through continuous section 2, and prefabricated decking 3 locates two adjacent prefabricated girder 1's top, and prefabricated girder 1 is provided with wet seam 7 within a definite time, is used for filling the concrete in the wet seam 7. Wherein, prefabricated girder 1 and prefabricated decking 3 factory prefabrication production processing to send to the job site. In a construction site, firstly two adjacent prefabricated main beams 1 are connected through a continuous section 2, then prefabricated bridge decks 3 are laid, concrete is poured into wet joints 7, and the construction of the non-prestressed continuous bridge pier top continuous section is completed. In this embodiment, prefabricated girder 1 and 3 pin-connected panel connections of prefabricated decking, this kind of structure of assembling is the structure form that the degree of batch production, mechanization, modularization are higher, and the decking adopts the prefabricated construction of mill, has solved the on-the-spot need prepare the decking in a large number and lead to construction cycle length, quality be difficult to control, receive adverse factor such as environmental impact big.
Further, the prefabricated main beam 1 comprises a main beam web 12 and a flange 11, the main beam web 12 is vertically arranged at the bottom of the flange 11, and the main beam web 12 is connected with the continuous section 2. Transverse connecting steel bars 4 are arranged in the main girder web 12 and the flanges 11, two ends of the transverse connecting steel bars 4 in the main girder web 12 extend into the continuous sections 2 and are connected with each other, and two ends of the transverse connecting steel bars 4 in the flanges 11 extend into the wet joints 7. The transverse connection reinforcing steel bars 4 are arranged to enhance the connection strength of the prefabricated main beam 1 and the continuous section 2, so that the bearing capacity of the continuous section of the pier top of the bridge is increased, and the strength of the bridge is improved.
Preferably, the continuous section 2 is formed by casting in place, C50 concrete is cast (C50 is the mark of concrete, and means that the strength grade of the concrete is not less than 50 mpa), the joint of the continuous section 2 and the girder web 12 is provided with a mounting groove 21, the girder web 12 is placed in the mounting groove 21, the girder web 12 in the mounting groove 21 is cast with the concrete of the continuous section 2 into a whole, and the connection strength of the girder web 12 and the continuous section 2 is further enhanced.
Further, still be provided with installation notch 31 on the prefabricated decking 3, wear to be equipped with ligature reinforcing bar 6 in the installation notch 31, girder web 12 corresponds with the side of being connected of prefabricated decking 3 and is provided with a plurality of stirrups 8, and a plurality of stirrups 8 are ligatured respectively on ligature reinforcing bar 6, and the arrangement of stirrups 8 and ligature reinforcing bar 6 has improved the arrangement of reinforcement form of prefabricated girder 1, and the site operation of being convenient for has reduced the construction degree of difficulty, and then has improved the efficiency of construction. Further, still be provided with horizontal reinforcing bar 5 in the prefabricated decking 3, horizontal reinforcing bar 5 both ends extend and insert in the wet seam 7 and be connected with the transverse connection reinforcing bar 4 in the edge of a wing 11, and after the prefabricated decking 3 installation finishes, concrete has increased the transverse connection intensity of prefabricated decking 3 and prefabricated girder 1 in installation notch 31 and wet seam 7.
As a preferable scheme, the prefabricated bridge deck 3 in this embodiment is prefabricated in batches in a factory and then transported to a construction site, and is made of UHPC Ultra-High Performance Concrete (UHPC is an abbreviation of Ultra-High Performance Concrete, and is an Ultra-High strength cement-based material with High strength, High toughness, and low porosity, and by improving fineness and activity of components, coarse aggregate is not used to minimize defects inside the material, and the Ultra-High strength and High durability are innovative cement-based engineering materials in the last thirty years), and the tensile strength of the adopted UHPC Ultra-High Performance Concrete is not less than 10MPa, the expansion rate is between 0.02 and 0.04%, and the remaining Performance indexes are not lower than the requirements of C50 Concrete. After the prefabricated bridge deck 3 is assembled on the construction site, UHPC ultrahigh-performance concrete is poured into the wet joint 7 and the mounting notch 31. In the embodiment, the prefabricated bridge deck 3 is made of UHPC (ultra high performance concrete) and can achieve the effects of continuous structure and resisting the tensile stress of a hogging moment area due to high tensile resistance, so that hogging moment prestressed steel bundles do not need to be arranged, the structure of the prefabricated bridge deck 3 is further simplified, the prefabricated bridge deck 3 is prefabricated in a factory, and the adverse factors of long time, difficulty in quality control, large environmental influence and the like caused by preparation of a large amount of UHPC on a construction site are avoided.
The embodiment also provides a construction method of the non-prestressed continuous bridge pier top continuous section assembled structure, which specifically comprises the following steps:
1. erecting two adjacent prefabricated main beams 1;
2. the transverse connecting steel bars 4 are connected with two adjacent prefabricated main beams 1;
3. pouring concrete of a continuous section 2 between two adjacent prefabricated main beams 1;
4. mounting prefabricated bridge deck boards 3 on the prefabricated main beam 1 and the continuous section 2;
5. connecting the flange 11 with the transverse steel bar 5 of the prefabricated bridge deck 3;
6. binding stirrups 8 on a main girder web 12 and reinforcing steel bars in the mounting notches 31 of the prefabricated bridge deck 3;
7. pouring UHPC ultrahigh-performance concrete into the mounting notch 31;
8. and pouring UHPC ultrahigh-performance concrete into the wet joint 7 between the prefabricated main beam 1 and the prefabricated bridge deck 3.
The construction method of the non-prestressed continuous bridge pier top continuous section splicing structure provided by the embodiment has the advantages of simple construction method and low construction difficulty, and concrete is not required to be prepared on site, so that the construction process is simplified, the construction period is shortened, the construction efficiency is improved, and the construction cost is greatly reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention.
Claims (9)
1. The utility model provides a structure is assembled to non-prestressing force continuous bridge mound top continuous section which characterized in that includes:
two prefabricated main beams (1);
the continuous section (2) is arranged between the two prefabricated main beams (1) and is used for connecting the two prefabricated main beams (1);
the prefabricated bridge deck (3) is arranged on the top of the prefabricated main beam (1), wet joints (7) are arranged between the prefabricated main beams (1), and the wet joints (7) are used for filling concrete.
2. The non-prestressed continuous bridge pier top continuous section assembling structure according to claim 1, wherein the prefabricated girder (1) comprises a girder web (12) and a flange (11);
the girder web (12) is vertically arranged at the bottom of the flange (11) and is connected with the continuous section (2).
3. The non-prestressed continuous bridge pier top continuous section assembling structure according to claim 2, wherein transverse connecting steel bars (4) are arranged in the main beam web (12) and the flanges (11);
the transverse connecting steel bars (4) in the two adjacent main beam webs (12) are connected.
4. The non-prestressed continuous bridge pier top continuous section splicing structure according to claim 2, wherein the continuous section (2) is cast in situ, and a mounting groove (21) is formed at the connecting position of the continuous section (2) and the prefabricated main girder (1);
the main beam web plate (12) is arranged in the mounting groove (21).
5. The non-prestressed continuous bridge pier top continuous section assembling structure according to claim 1, wherein a mounting notch (31) is further formed in the prefabricated bridge deck (3), and binding steel bars (6) penetrate through the mounting notch (31);
girder web (12) with the side of being connected of prefabricated decking (3) still is provided with stirrup (8), stirrup (8) with in installation notch (31) ligature reinforcing bar (6) are connected.
6. The non-prestressed continuous bridge pier top continuous section assembling structure according to claim 5, wherein transverse steel bars (5) are arranged in the prefabricated bridge deck (3), and the transverse steel bars (5) extend into the wet joints (7) and are connected with the transverse connecting steel bars (4) in the flanges (11).
7. The non-prestressed continuous bridge pier top continuous section assembling structure according to claim 6, wherein the prefabricated bridge deck (3) is made of UHPC ultra-high performance concrete.
8. A construction method of a non-prestressed continuous bridge pier top continuous section assembled structure is characterized by comprising the following steps:
erecting two adjacent prefabricated main beams;
connecting transverse connecting steel bars between two adjacent prefabricated main beams;
pouring a continuous section between two adjacent prefabricated main beams;
installing a prefabricated bridge deck;
and pouring a wet joint between the prefabricated main beam and the prefabricated bridge deck.
9. The construction method of the non-prestressed continuous bridge pier top continuous section assembled structure according to claim 8, wherein the installing of the prefabricated bridge deck comprises:
connecting the transverse connecting steel bars in the flanges with the transverse steel bars of the prefabricated bridge deck;
connecting stirrups of the main girder web plate and reinforcing steel bars in the mounting groove opening of the prefabricated bridge deck;
and pouring the mounting notches on the prefabricated bridge deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476524.8A CN113279320A (en) | 2021-04-29 | 2021-04-29 | Non-prestressed continuous bridge pier top continuous section assembling structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110476524.8A CN113279320A (en) | 2021-04-29 | 2021-04-29 | Non-prestressed continuous bridge pier top continuous section assembling structure and construction method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6470524B1 (en) * | 1998-03-04 | 2002-10-29 | Benjamin Mairantz | Composite bridge superstructure with precast deck elements |
| CN202969248U (en) * | 2012-08-16 | 2013-06-05 | 杨众 | Prefabricated diaphragm plate for bridge |
| KR20170002280A (en) * | 2015-06-29 | 2017-01-06 | 이동찬 | Prefabricated precast concrete bridge deck |
| CN106677049A (en) * | 2017-01-20 | 2017-05-17 | 福州大学 | Assembled steel-concrete combination structure bridge and construction method |
| CN108035252A (en) * | 2017-12-01 | 2018-05-15 | 上海市政工程设计研究总院（集团）有限公司 | A kind of simply supported girder bridge panel continuous structure and its construction method |
| CN210117637U (en) * | 2018-11-23 | 2020-02-28 | 中交公路规划设计院有限公司 | Assembled I-shaped combined beam bridge |
| CN210657934U (en) * | 2019-03-29 | 2020-06-02 | 宁波市高等级公路建设指挥部 | Non-prestressed simply-supported-rotating continuous bridge |
| CN111455806A (en) * | 2020-04-17 | 2020-07-28 | 浙江省交通规划设计研究院有限公司 | Prestressed concrete beam hogging moment area bridge structure and construction method thereof |
| CN112064487A (en) * | 2020-08-17 | 2020-12-11 | 宁波市高等级公路建设管理中心 | Non-prestressed continuous bridge pier top continuous section structure and construction method |
-
2021
- 2021-04-29 CN CN202110476524.8A patent/CN113279320A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6470524B1 (en) * | 1998-03-04 | 2002-10-29 | Benjamin Mairantz | Composite bridge superstructure with precast deck elements |
| CN202969248U (en) * | 2012-08-16 | 2013-06-05 | 杨众 | Prefabricated diaphragm plate for bridge |
| KR20170002280A (en) * | 2015-06-29 | 2017-01-06 | 이동찬 | Prefabricated precast concrete bridge deck |
| CN106677049A (en) * | 2017-01-20 | 2017-05-17 | 福州大学 | Assembled steel-concrete combination structure bridge and construction method |
| CN108035252A (en) * | 2017-12-01 | 2018-05-15 | 上海市政工程设计研究总院（集团）有限公司 | A kind of simply supported girder bridge panel continuous structure and its construction method |
| CN210117637U (en) * | 2018-11-23 | 2020-02-28 | 中交公路规划设计院有限公司 | Assembled I-shaped combined beam bridge |
| CN210657934U (en) * | 2019-03-29 | 2020-06-02 | 宁波市高等级公路建设指挥部 | Non-prestressed simply-supported-rotating continuous bridge |
| CN111455806A (en) * | 2020-04-17 | 2020-07-28 | 浙江省交通规划设计研究院有限公司 | Prestressed concrete beam hogging moment area bridge structure and construction method thereof |
| CN112064487A (en) * | 2020-08-17 | 2020-12-11 | 宁波市高等级公路建设管理中心 | Non-prestressed continuous bridge pier top continuous section structure and construction method |
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