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A platform for research: civil engineering, architecture and urbanism
Multi-point synchronous construction method for tower beam of large-span cable-stayed bridge
The invention belongs to the technical field of cable-stayed bridge construction, and particularly relates to a multi-point synchronous construction method for tower beams of a large-span cable-stayed bridge. The main beam is divided into a plurality of main beam sections, and the plurality of main beam sections are synchronously constructed on the construction working face provided by the trestle and the support; during the construction period of the main beam section, bridge floor tower column construction is carried out; a wet joint is reserved between the main beam sections, a main beam section prestress tensioning space is formed in the wet joint, and after the main beam sections on the two sides of the wet joint are tensioned, the wet joint is constructed in a cast-in-place mode; a closure section is reserved in the midspan of the main beam, and the closure section is constructed in a cast-in-place mode after the stay cables between the main beam and the bridge floor tower columns are constructed; according to the structural design characteristics of the large-span cable-stayed bridge, the tower beam multi-point synchronous construction method is adopted, the construction progress can be obviously accelerated, the construction period is shortened, the construction efficiency is improved, and the method has the obvious characteristics of being controllable in quality and guaranteeing safety.
本发明属于斜拉桥施工技术领域，具体涉及一种大跨径斜拉桥塔梁多点同步施工方法；将主梁划分为多个主梁节段，多个主梁节段在栈桥和支架提供的施工作业面上同步施工；主梁节段施工期间进行桥面塔柱施工；主梁节段之间预留湿接缝，湿接缝中形成主梁节段预应力张拉空间，待湿接缝两侧的主梁节段张拉完成后现浇施工湿接缝；主梁跨中预留合龙段，主梁与桥面塔柱之间的斜拉索施工完成后现浇施工合龙段；本发明针对大跨径斜拉桥结构设计特点，采用塔梁多点同步施工方法，能够显著加快施工进度，缩短施工工期，提高施工效率，具有明显的质量可控和安全保障的特点。
Multi-point synchronous construction method for tower beam of large-span cable-stayed bridge
The invention belongs to the technical field of cable-stayed bridge construction, and particularly relates to a multi-point synchronous construction method for tower beams of a large-span cable-stayed bridge. The main beam is divided into a plurality of main beam sections, and the plurality of main beam sections are synchronously constructed on the construction working face provided by the trestle and the support; during the construction period of the main beam section, bridge floor tower column construction is carried out; a wet joint is reserved between the main beam sections, a main beam section prestress tensioning space is formed in the wet joint, and after the main beam sections on the two sides of the wet joint are tensioned, the wet joint is constructed in a cast-in-place mode; a closure section is reserved in the midspan of the main beam, and the closure section is constructed in a cast-in-place mode after the stay cables between the main beam and the bridge floor tower columns are constructed; according to the structural design characteristics of the large-span cable-stayed bridge, the tower beam multi-point synchronous construction method is adopted, the construction progress can be obviously accelerated, the construction period is shortened, the construction efficiency is improved, and the method has the obvious characteristics of being controllable in quality and guaranteeing safety.
本发明属于斜拉桥施工技术领域，具体涉及一种大跨径斜拉桥塔梁多点同步施工方法；将主梁划分为多个主梁节段，多个主梁节段在栈桥和支架提供的施工作业面上同步施工；主梁节段施工期间进行桥面塔柱施工；主梁节段之间预留湿接缝，湿接缝中形成主梁节段预应力张拉空间，待湿接缝两侧的主梁节段张拉完成后现浇施工湿接缝；主梁跨中预留合龙段，主梁与桥面塔柱之间的斜拉索施工完成后现浇施工合龙段；本发明针对大跨径斜拉桥结构设计特点，采用塔梁多点同步施工方法，能够显著加快施工进度，缩短施工工期，提高施工效率，具有明显的质量可控和安全保障的特点。
Multi-point synchronous construction method for tower beam of large-span cable-stayed bridge
一种大跨径斜拉桥塔梁多点同步施工方法
LYU ZHILIANG (author) / ZHAI JIANGUO (author) / TANG CHUNYANG (author) / MA XIPING (author) / ZHANG CAIYANG (author) / ZHAO CHAO (author) / GUO WENHUA (author) / GUO LIUJUN (author) / CHEN DINGSHI (author) / XUE CHAO (author)
2024-11-15
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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