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A platform for research: civil engineering, architecture and urbanism
Composite beam for cable-stayed bridge and construction method thereof
The invention discloses a composite beam for a cable-stayed bridge, which comprises a steel main beam, a rubber gasket and a bridge deck slab, the main body of the bridge deck slab adopts a block precast concrete structure, adjacent precast concrete blocks are connected through post-cast wet joints, and the top and bottom of each precast concrete block are both provided with overhanging steel bars. All the prefabricated concrete blocks provided with the overhanging steel bars are placed on the upper flange of the steel main beam through rubber gaskets; the anchoring length of the two ends of the overhanging steel bar is 6-15 d, and d is the diameter of the overhanging steel bar; the two ends of the overhanging steel bar arranged on each prefabricated concrete block stretch into the range of the post-pouring wet joint, and the post-pouring wet joint is composed of cast-in-place UHPC ultra-high performance concrete. As the edge of the prefabricated part of the composite beam bridge deck slab is not provided with a shear key, the overhanging steel bars are straight steel bars, and the post-pouring wet joints are made of UHPC (Ultra High Performance Concrete), the factorization speed of the prefabricated beam bridge deck slab can be obviously improved, site construction and quality control are facilitated, materials and investment are saved, and the maintenance difficulty is reduced.
本发明公开了一种斜拉桥用组合梁，包括钢主梁、橡胶垫片和桥面板，桥面板的主体采用分块预制混凝土结构，相邻的预制混凝土块之间通过后浇湿接缝相连，预制混凝土块的块顶和块底位置均配置有外伸钢筋，所有的配置有外伸钢筋的预制混凝土块通过橡胶垫片搁置在钢主梁的上翼缘上；外伸钢筋两端的锚固长度为6～15d，d为外伸钢筋的直径；每块预制混凝土块所配置的外伸钢筋的两端伸入至后浇湿接缝范围内，后浇湿接缝由现浇UHPC超高性能混凝土构成。由于该组合梁桥面板预制部分边缘不设剪力键，外伸钢筋采用直钢筋，后浇湿接缝采用UHPC超高性能混凝土，因此可以显著提高预制桥面板的工厂化速度，方便现场施工和质量控制，节约材料和投资，降低养护维修难度。
Composite beam for cable-stayed bridge and construction method thereof
The invention discloses a composite beam for a cable-stayed bridge, which comprises a steel main beam, a rubber gasket and a bridge deck slab, the main body of the bridge deck slab adopts a block precast concrete structure, adjacent precast concrete blocks are connected through post-cast wet joints, and the top and bottom of each precast concrete block are both provided with overhanging steel bars. All the prefabricated concrete blocks provided with the overhanging steel bars are placed on the upper flange of the steel main beam through rubber gaskets; the anchoring length of the two ends of the overhanging steel bar is 6-15 d, and d is the diameter of the overhanging steel bar; the two ends of the overhanging steel bar arranged on each prefabricated concrete block stretch into the range of the post-pouring wet joint, and the post-pouring wet joint is composed of cast-in-place UHPC ultra-high performance concrete. As the edge of the prefabricated part of the composite beam bridge deck slab is not provided with a shear key, the overhanging steel bars are straight steel bars, and the post-pouring wet joints are made of UHPC (Ultra High Performance Concrete), the factorization speed of the prefabricated beam bridge deck slab can be obviously improved, site construction and quality control are facilitated, materials and investment are saved, and the maintenance difficulty is reduced.
本发明公开了一种斜拉桥用组合梁，包括钢主梁、橡胶垫片和桥面板，桥面板的主体采用分块预制混凝土结构，相邻的预制混凝土块之间通过后浇湿接缝相连，预制混凝土块的块顶和块底位置均配置有外伸钢筋，所有的配置有外伸钢筋的预制混凝土块通过橡胶垫片搁置在钢主梁的上翼缘上；外伸钢筋两端的锚固长度为6～15d，d为外伸钢筋的直径；每块预制混凝土块所配置的外伸钢筋的两端伸入至后浇湿接缝范围内，后浇湿接缝由现浇UHPC超高性能混凝土构成。由于该组合梁桥面板预制部分边缘不设剪力键，外伸钢筋采用直钢筋，后浇湿接缝采用UHPC超高性能混凝土，因此可以显著提高预制桥面板的工厂化速度，方便现场施工和质量控制，节约材料和投资，降低养护维修难度。
Composite beam for cable-stayed bridge and construction method thereof
一种斜拉桥用组合梁及其施工方法
XIE BIN (author) / YAN XU (author) / LIU XUKAI (author) / QI YANPING (author) / ZHAO CHUNWEI (author) / WANG DEHUI (author) / LI LIANG (author) / WU JIANMIN (author) / ZHANG PENG (author)
2023-12-15
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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