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CN108708274A - A kind of wet seam construction of prefabricated assembled concrete floorings - Google Patents

A kind of wet seam construction of prefabricated assembled concrete floorings Download PDF

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Publication number
CN108708274A
CN108708274A CN201810877446.0A CN201810877446A CN108708274A CN 108708274 A CN108708274 A CN 108708274A CN 201810877446 A CN201810877446 A CN 201810877446A CN 108708274 A CN108708274 A CN 108708274A
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concrete bridge
bridge deck
ring structure
wet joint
precast concrete
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CN201810877446.0A
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狄谨
韩斌
秦凤江
尹志伟
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Chongqing University
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Chongqing University
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Priority to CN201810877446.0A priority Critical patent/CN108708274A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/06Arrangement, construction or bridging of expansion joints
    • E01D19/067Flat continuous joints cast in situ
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/30Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

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

Abstract

Invention provides a kind of wet seam construction of prefabricated assembled concrete floorings.The wet seam construction includes the precast concrete floorings that polylith is erected on longeron.Between adjacent two pieces of precast concrete floorings interval formed along bridge to the wet seam of step.The closely wet seam side of the precast concrete floorings is provided with the upper layer embedded bar and lower layer's embedded bar extended on the outside of precast concrete floorings.Cast-in-place ECC concrete in the wet seam.Adjacent two pieces of precast concrete floorings are connected integral by neighbouring ECC concrete.The wet seam construction improves the ability of wet seam Transfer of Shear and moment of flexure, can be effectively prevented the generation and expansion in wet seam crossing crack.

Description

一种预制装配式混凝土桥面板湿接缝结构A prefabricated concrete bridge deck wet joint structure

技术领域technical field

本发明涉及桥梁结构技术领域,特别涉及一种桥面板湿接缝结构。The invention relates to the technical field of bridge structures, in particular to a bridge deck wet joint structure.

背景技术Background technique

预由于我国很多桥梁建设时间较早,这些桥梁正在逐渐老化,达到它们的使用期限,很多桥梁需要进行维修甚至是更换。在进行桥梁的维修或者更换时,对交通的阻断必须得到充分的考虑,桥梁的维修或者更换的时间必须缩短到最小。必须要提出一种快捷、实用并且经济的方式来代替之前的大规模人工劳动的桥梁建设方式。Due to the early construction of many bridges in our country, these bridges are gradually aging and reaching their service life, and many bridges need to be repaired or even replaced. When repairing or replacing bridges, full consideration must be given to blocking traffic, and the time for repairing or replacing bridges must be shortened to a minimum. A fast, practical and economical way to replace the previous large-scale manual labor bridge construction method must be proposed.

老化的桥梁的最主要的问题之一是桥面板。桥面板直接承受汽车人行荷载、有害的天气条件和除冰盐的腐蚀,所以桥面板的老化要比桥梁的其他部件老化更快。传统的桥面板建造方法是现场浇筑混凝土,这需要搭架模板,放置钢筋笼,浇筑混凝土和对混凝土进行养护。这种建造桥面板的方法非常耗费时间。因此,需要用新的桥面板建造方式来节约建造时间,减少对交通的阻断时间。One of the most major problems with aging bridges is the deck. The deck is directly exposed to vehicular and pedestrian loads, adverse weather conditions, and corrosion from de-icing salts, so the deck degrades faster than the rest of the bridge. The traditional bridge deck construction method is to pour concrete on site, which requires erecting formwork, placing steel cages, pouring concrete and curing the concrete. This method of building bridge decks is very time consuming. Therefore, it is necessary to use a new bridge deck construction method to save construction time and reduce traffic interruption time.

在桥梁的维修和替换中,预制装配式混凝土桥面板系统已经成为比较成功的施工方法。对于预制装配式混凝土桥面板施工方法的推广而言,一个必须要跨越的障碍是预制混凝土桥面板之间的湿接缝连接问题。In the repair and replacement of bridges, the prefabricated concrete deck system has become a relatively successful construction method. For the popularization of prefabricated concrete bridge deck construction method, an obstacle that must be crossed is the problem of wet joint connection between precast concrete bridge decks.

目前所用的预制桥面板之间的湿接缝连接构造存在传力性能和耐久性方面的问题。预制桥面板之间的湿接缝连接构造无法有效地阻止裂缝的产生和扩展。另外,现在常用的湿接缝处直筋搭接或者焊接构造,为了保证其强度必须增大湿接缝宽度,这会增加湿接缝灌浆混凝土的用量和钢筋的用量而增加建造成本,湿接缝的宽度变大也使得施工速度减慢。因此,亟需发明一种新的预制装配式混凝土桥面板湿接缝连接构造来解决这些问题。The current construction of wet-joint connections between prefabricated bridge decks presents problems with force transmission and durability. The wet joint connection structure between prefabricated bridge decks cannot effectively prevent the generation and expansion of cracks. In addition, in order to ensure the strength of the commonly used wet joints with straight bar lap or welded structures, the width of the wet joints must be increased, which will increase the amount of wet joint grouting concrete and steel bars and increase the construction cost. The larger joint width also slows down the construction speed. Therefore, there is an urgent need to invent a new wet joint connection structure for prefabricated concrete bridge decks to solve these problems.

发明内容Contents of the invention

本发明的目的是提供一种预制装配式混凝土桥面板湿接缝结构,以解决现有技术中存在的问题。The purpose of the present invention is to provide a prefabricated concrete bridge deck wet joint structure to solve the problems in the prior art.

为实现本发明目的而采用的技术方案是这样的,一种预制装配式混凝土桥面板湿接缝结构,其特征在于:包括多块架设在纵梁上的预制混凝土桥面板。The technical solution adopted to realize the object of the present invention is as follows, a prefabricated concrete bridge deck wet joint structure, characterized in that it includes a plurality of prefabricated concrete bridge decks erected on longitudinal girders.

相邻两块预制混凝土桥面板之间间隔形成顺桥向的湿接缝。所述预制混凝土桥面板内沿顺桥向间隔布置有若干根上层预埋钢筋和若干根下层预埋钢筋。所述上层预埋钢筋和下层预埋钢筋均伸出预制混凝土桥面板的近湿接缝侧。所述上层预埋钢筋外伸部分的端部弯折出单环形结构Ⅰ。所述下层预埋钢筋外伸部分的端部弯折出单环形结构Ⅱ。相邻两块预制混凝土桥面板的单环形结构Ⅰ一一对应搭接或焊接。相邻两块预制混凝土桥面板的单环形结构Ⅱ一一对应搭接或焊接。在湿接缝内,所述单环形结构Ⅰ和单环形结构Ⅱ的投影重叠。各单环形结构Ⅰ和单环形结构Ⅱ相互交错,形成沿顺桥向的套环结构。所述交接套环结构中布置有若干根大头钢筋。Wet joints along the bridge direction are formed at intervals between two adjacent precast concrete bridge decks. A plurality of pre-embedded steel bars in the upper layer and a number of pre-embedded steel bars in the lower layer are arranged at intervals along the bridge direction in the prefabricated concrete bridge deck. Both the pre-embedded steel bars in the upper layer and the embedded steel bars in the lower layer protrude from the side near the wet joint of the precast concrete bridge deck. The end of the overhanging part of the pre-embedded steel bar in the upper layer is bent to form a single ring structure I. The end of the overhanging part of the pre-embedded steel bar in the lower layer is bent to form a single ring structure II. The single ring structure I of two adjacent prefabricated concrete bridge decks is overlapped or welded one by one. The single ring structure II of two adjacent prefabricated concrete bridge decks is overlapped or welded one by one. In the wet joint, the projections of the single ring structure I and the single ring structure II overlap. Each single ring structure I and single ring structure II are interlaced to form a ring structure along the direction of the bridge. Several big-end steel bars are arranged in the transfer collar structure.

所述湿接缝内现浇ECC混凝土。相邻两块预制混凝土桥面板通过邻近的ECC混凝土连接成整体。In-situ ECC concrete is cast in the wet joints. Two adjacent prefabricated concrete bridge decks are connected as a whole through the adjacent ECC concrete.

进一步,所述预制混凝土桥面板近湿接缝侧去除掉一个长方体,形成齿槽。所述ECC混凝土充填相邻两块预制混凝土桥面板的齿槽及对应的湿接缝。Further, a cuboid is removed from the side near the wet joint of the precast concrete bridge deck to form a cog. The ECC concrete fills the tooth grooves and corresponding wet joints of two adjacent prefabricated concrete bridge decks.

进一步,所述预制混凝土桥面板的顶部设置有桥面铺装。Further, the top of the prefabricated concrete bridge deck is provided with bridge deck pavement.

进一步,所述纵梁为PK钢箱组合梁、闭口钢箱组合梁、边钢箱组合梁、工字钢组合梁或钢桁架组合梁。Further, the longitudinal beam is a PK steel box composite beam, a closed steel box composite beam, a side steel box composite beam, an I-beam composite beam or a steel truss composite beam.

进一步,所述预制混凝土桥面板的厚度均为30厘米。Further, the thickness of the prefabricated concrete bridge decks is 30 centimeters.

本发明的技术效果是毋庸置疑的:Technical effect of the present invention is beyond doubt:

1)套环结构内的混凝土形成“榫卯结构”,提高了湿接缝传递剪力和弯矩的能力,能够有效地防止湿接缝处裂缝的产生和扩展。1) The concrete in the ring structure forms a "mortise and tenon structure", which improves the ability of the wet joint to transmit shear force and bending moment, and can effectively prevent the generation and expansion of cracks at the wet joint.

2)显著减小湿接缝宽度,湿接缝灌浆混凝土的用量减小,施工速度加快,且更具有经济性;2) Significantly reduce the width of wet joints, reduce the amount of wet joint grouting concrete, speed up construction, and be more economical;

3)改善了湿接缝的传力性能和耐久性。3) The force transmission performance and durability of wet joints are improved.

附图说明Description of drawings

图1为预埋钢筋布置图;Figure 1 is the layout of the pre-embedded reinforcement;

图2为预埋钢筋连接方式示意图;Figure 2 is a schematic diagram of the connection method of embedded steel bars;

图3为A处局部放大图;Figure 3 is a partial enlarged view of A;

图4为桥面板湿接缝结构示意图;Figure 4 is a schematic diagram of the wet joint structure of the bridge deck;

图中:预制混凝土桥面板1、齿槽101、预埋钢筋2、单环形结构Ⅰ201、湿接缝3、ECC混凝土4、大头钢筋5、下层预埋钢筋6、单环形结构Ⅱ601、桥面铺装7。In the figure: prefabricated concrete bridge deck 1, tooth groove 101, pre-embedded steel bar 2, single ring structure Ⅰ201, wet joint 3, ECC concrete 4, bulk steel bar 5, lower layer pre-embedded steel bar 6, single ring structure Ⅱ601, bridge deck paving Install 7.

具体实施方式Detailed ways

下面结合实施例对本发明作进一步说明,但不应该理解为本发明上述主题范围仅限于下述实施例。在不脱离本发明上述技术思想的情况下,根据本领域普通技术知识和惯用手段,做出各种替换和变更,均应包括在本发明的保护范围内。The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the subject of the present invention is limited to the following examples. Without departing from the above-mentioned technical ideas of the present invention, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present invention.

实施例1:Example 1:

本实施例公开一种预制装配式混凝土桥面板湿接缝结构,包括多块架设在纵梁上的预制混凝土桥面板1。This embodiment discloses a prefabricated concrete bridge deck wet joint structure, which includes a plurality of prefabricated concrete bridge decks 1 erected on longitudinal girders.

参见图1和图2,相邻两块预制混凝土桥面板1之间间隔形成顺桥向的湿接缝3。所述预制混凝土桥面板1整体为一个长方体,近湿接缝侧去除掉一个长方体,形成齿槽101。所述预制混凝土桥面板1上部沿顺桥向间隔布置有一排上层预埋钢筋2。所述上层预埋钢筋2从齿槽101处伸出预制混凝土桥面板1的近湿接缝侧。所述上层预埋钢筋2外伸部分的端部弯折出单环形结构Ⅰ201。所述预制混凝土桥面板1下部沿顺桥向间隔布置有一排下层预埋钢筋6。所述下层预埋钢筋6伸出预制混凝土桥面板1的近湿接缝侧。所述下层预埋钢筋6外伸部分的端部弯折出单环形结构Ⅱ601。Referring to Figures 1 and 2, two adjacent precast concrete bridge decks 1 are spaced apart to form wet joints 3 along the bridge direction. The precast concrete bridge deck 1 is a rectangular parallelepiped as a whole, and a rectangular parallelepiped is removed near the wet joint to form an alveolar 101 . A row of upper pre-embedded steel bars 2 are arranged at intervals along the bridge direction on the upper part of the precast concrete bridge deck 1 . The upper pre-embedded steel bar 2 protrudes from the tooth groove 101 near the wet joint side of the precast concrete bridge deck 1 . The end of the overhanging portion of the upper pre-embedded steel bar 2 is bent to form a single ring structure I201. A row of lower pre-embedded steel bars 6 are arranged at intervals along the bridge direction at the lower part of the precast concrete bridge deck 1 . The lower pre-embedded steel bars 6 protrude from the side near the wet joint of the precast concrete bridge deck 1 . The end of the overhanging part of the pre-embedded steel bar 6 in the lower layer is bent to form a single ring structure II601.

参见图3,相邻两块预制混凝土桥面板1的单环形结构Ⅰ201一一对应搭接或焊接。相邻两块预制混凝土桥面板1的单环形结构Ⅱ601一一对应搭接或焊接。在湿接缝3内,所述单环形结构Ⅰ201和单环形结构Ⅱ601的投影重叠。各单环形结构Ⅰ201和单环形结构Ⅱ601相互交错,形成沿顺桥向的套环结构。所述交接套环结构中布置有若干根大头钢筋5。Referring to FIG. 3 , the single ring structures I 201 of two adjacent precast concrete bridge decks 1 are overlapped or welded one by one. The single annular structure II601 of two adjacent prefabricated concrete bridge decks 1 is overlapped or welded in one-to-one correspondence. In the wet joint 3, the projections of the single annular structure I 201 and the single annular structure II 601 overlap. Each single ring structure I 201 and single ring structure II 601 are interlaced to form a ring structure along the direction of the bridge. Several big-headed steel bars 5 are arranged in the transfer collar structure.

参见图4,所述湿接缝3内现浇ECC混凝土(engineered eementitious composite,工程用水泥基复合材料)4。所述ECC混凝土4充填相邻两块预制混凝土桥面板1的齿槽101及对应的湿接缝3。ECC混凝土4沿横桥向的截面呈T形。相邻两块预制混凝土桥面板1通过邻近的ECC混凝土4连接成整体的桥面板。所述桥面板的顶部设置有桥面铺装7。Referring to FIG. 4 , ECC concrete (engineered eementitious composite, engineering cement-based composite material) 4 is cast in place in the wet joint 3 . The ECC concrete 4 fills the alveoli 101 and the corresponding wet joints 3 of two adjacent precast concrete bridge decks 1 . The section of the ECC concrete 4 along the direction of the bridge is T-shaped. Two adjacent prefabricated concrete bridge decks 1 are connected by adjacent ECC concrete 4 to form an integral bridge deck. A bridge deck pavement 7 is arranged on the top of the bridge deck.

在本实施例中,所述预制混凝土桥面板1的厚度均为30厘米。所述纵梁为PK钢箱组合梁、闭口钢箱组合梁、边钢箱组合梁、工字钢组合梁或钢桁架组合梁。In this embodiment, the thickness of the precast concrete bridge decks 1 is 30 cm. The longitudinal beam is a PK steel box composite beam, a closed steel box composite beam, a side steel box composite beam, an I-shaped steel composite beam or a steel truss composite beam.

Claims (5)

1.一种预制装配式混凝土桥面板湿接缝结构,其特征在于:包括多块架设在纵梁上的预制混凝土桥面板(1);1. A prefabricated assembled concrete bridge deck wet joint structure is characterized in that: it comprises a plurality of prefabricated concrete bridge decks (1) erected on longitudinal girders; 相邻两块预制混凝土桥面板(1)之间间隔形成顺桥向的所述湿接缝(3);所述预制混凝土桥面板(1)内沿顺桥向间隔布置有若干根上层预埋钢筋(2)和若干根下层预埋钢筋(6);所述上层预埋钢筋(2)和下层预埋钢筋(6)均伸出预制混凝土桥面板(1)的近湿接缝侧。所述上层预埋钢筋(2)外伸部分的端部弯折出单环形结构Ⅰ(201);所述下层预埋钢筋(6)外伸部分的端部弯折出单环形结构Ⅱ(601);相邻两块预制混凝土桥面板(1)的单环形结构Ⅰ(201)一一对应搭接或焊接;相邻两块预制混凝土桥面板(1)的单环形结构Ⅱ(601)一一对应搭接或焊接;各单环形结构Ⅰ(201)和单环形结构Ⅱ(601)相互交错,形成沿顺桥向的套环结构;所述交接套环结构中布置有若干根大头钢筋(5);The wet joints (3) along the bridge direction are formed at intervals between two adjacent precast concrete bridge decks (1); several upper layer pre-buried joints (3) are arranged at intervals along the bridge direction in the precast concrete bridge deck (1). Reinforcement bars (2) and several lower-layer pre-embedded reinforcement bars (6); the upper-layer pre-embedded reinforcement bars (2) and the lower-layer pre-embedded reinforcement bars (6) both protrude from the near-wet joint side of the precast concrete bridge deck (1). The end of the overhanging part of the pre-embedded steel bar (2) in the upper layer is bent to form a single ring structure I (201); the end of the outreach part of the pre-embedded steel bar (6) in the lower layer is bent to form a single ring structure II (601). ); the single ring structure I (201) of two adjacent precast concrete bridge decks (1) is overlapped or welded one by one; the single ring structure II (601) of two adjacent precast concrete bridge decks (1) one by one Corresponding to overlapping or welding; each single ring structure I (201) and single ring structure II (601) are interlaced to form a ring structure along the direction of the bridge; several large-headed steel bars (5 ); 所述湿接缝(3)内现浇ECC混凝土(4);相邻两块预制混凝土桥面板(1)通过邻近的ECC混凝土(4)连接成整体。In-situ ECC concrete (4) is cast in the wet joint (3); two adjacent prefabricated concrete bridge decks (1) are connected into a whole through the adjacent ECC concrete (4). 2.根据权利要求1所述的一种预制装配式混凝土桥面板湿接缝结构,其特征在于:所述预制混凝土桥面板(1)近湿接缝侧去除掉一个长方体,形成齿槽(101);所述ECC混凝土(4)充填相邻两块预制混凝土桥面板(1)的齿槽(101)及对应的湿接缝(3)。2. A prefabricated concrete bridge deck wet joint structure according to claim 1, characterized in that: a cuboid is removed from the side of the prefabricated concrete bridge deck (1) near the wet joint to form an alveolar (101 ); the ECC concrete (4) fills the alveoli (101) and corresponding wet joints (3) of two adjacent precast concrete bridge decks (1). 3.根据权利要求1或2所述的一种预制装配式混凝土桥面板湿接缝结构,其特征在于:所述预制混凝土桥面板(1)的顶部设置有桥面铺装(7)。3. A prefabricated concrete bridge deck wet joint structure according to claim 1 or 2, characterized in that: the top of the prefabricated concrete bridge deck (1) is provided with a bridge deck pavement (7). 4.根据权利要求1、2或3所述的一种预制装配式混凝土桥面板湿接缝结构,其特征在于:所述纵梁为PK钢箱组合梁、闭口钢箱组合梁、边钢箱组合梁、工字钢组合梁或钢桁架组合梁。4. A prefabricated concrete bridge deck wet joint structure according to claim 1, 2 or 3, characterized in that: the longitudinal girder is a PK steel box composite beam, a closed steel box composite beam, a side steel box Composite beams, I-beam composite beams or steel truss composite beams. 5.根据权利要求1所述的一种预制装配式混凝土桥面板湿接缝结构,其特征在于:所述预制混凝土桥面板(1)的厚度均为30厘米。5. A prefabricated concrete bridge deck wet joint structure according to claim 1, characterized in that: the prefabricated concrete bridge deck (1) has a thickness of 30 cm.
CN201810877446.0A 2018-08-03 2018-08-03 A kind of wet seam construction of prefabricated assembled concrete floorings Pending CN108708274A (en)

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CN110847463A (en) * 2019-12-03 2020-02-28 中冶建筑研究总院有限公司 Full precast floor assembled steel-concrete composite floor
CN111608077A (en) * 2020-06-17 2020-09-01 福州市规划设计研究院 Prefabricated bridge deck assembling structure and method for full-prefabricated assembled composite structure bridge
CN112681129A (en) * 2020-12-03 2021-04-20 重庆建工第九建设有限公司 Construction joint structure
CN112726318A (en) * 2020-12-24 2021-04-30 杭州修路人科技股份有限公司 Regeneration and repair method for cement concrete pavement broken plate
CN112761067A (en) * 2021-01-12 2021-05-07 湖南省交通规划勘察设计院有限公司 Connecting end structure of UHPC bridge deck precast slab
CN113322771A (en) * 2021-06-18 2021-08-31 山东大学 Seamless bridge structure based on ultrahigh-toughness cement-based composite material and construction method
CN113463514A (en) * 2021-07-26 2021-10-01 中国葛洲坝集团勘测设计有限公司 Novel fabricated concrete plate structure and construction method
CN115506232A (en) * 2022-10-31 2022-12-23 上海公路桥梁(集团)有限公司 Prefabricated Bridge Deck Wet Joint Structure and Its Construction Method
WO2025060230A1 (en) * 2023-09-18 2025-03-27 东莞理工学院 Fabricated full-frp bridge deck structure and construction method therefor

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110847463A (en) * 2019-12-03 2020-02-28 中冶建筑研究总院有限公司 Full precast floor assembled steel-concrete composite floor
CN111608077A (en) * 2020-06-17 2020-09-01 福州市规划设计研究院 Prefabricated bridge deck assembling structure and method for full-prefabricated assembled composite structure bridge
CN112681129A (en) * 2020-12-03 2021-04-20 重庆建工第九建设有限公司 Construction joint structure
CN112726318A (en) * 2020-12-24 2021-04-30 杭州修路人科技股份有限公司 Regeneration and repair method for cement concrete pavement broken plate
CN112761067A (en) * 2021-01-12 2021-05-07 湖南省交通规划勘察设计院有限公司 Connecting end structure of UHPC bridge deck precast slab
CN113322771A (en) * 2021-06-18 2021-08-31 山东大学 Seamless bridge structure based on ultrahigh-toughness cement-based composite material and construction method
CN113322771B (en) * 2021-06-18 2022-07-26 山东大学 A seamless bridge structure and construction method based on ultra-high toughness cement-based composite materials
CN113463514A (en) * 2021-07-26 2021-10-01 中国葛洲坝集团勘测设计有限公司 Novel fabricated concrete plate structure and construction method
CN115506232A (en) * 2022-10-31 2022-12-23 上海公路桥梁(集团)有限公司 Prefabricated Bridge Deck Wet Joint Structure and Its Construction Method
CN115506232B (en) * 2022-10-31 2025-04-01 上海公路桥梁(集团)有限公司 Prefabricated bridge deck wet joint structure and construction method thereof
WO2025060230A1 (en) * 2023-09-18 2025-03-27 东莞理工学院 Fabricated full-frp bridge deck structure and construction method therefor

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Application publication date: 20181026