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A platform for research: civil engineering, architecture and urbanism
Steel and UHPC composite beam segment assembly wet joint pouring method
The invention relates to a steel and UHPC (Ultra High Performance Concrete) composite beam segment assembly wet joint pouring method which is characterized in that a steel and UHPC composite beam is prefabricated segment by segment in a factory and assembled into a bridge on site, and a UHPC wet joint is finally poured, and the method comprises the following steps: 1) hoisting and tailor-welding the steel and UHPC composite beam segment by segment; 2) processing the surface of the top plate and the UHPC interface; (3) reinforcing joint steel bars; (4) wet joint UHPC pouring is conducted; and (5) carrying out wet joint UHPC maintenance. The main key technology is the UHPC wet joint treatment technology, the shrinkage stress of the high-strength concrete can be reduced, a solution is provided for solving the problem that the high-strength concrete is prone to generating shrinkage cracks, the engineering quality can be further guaranteed, and the service life of the steel and UHPC combined bridge is prolonged. And meanwhile, the construction process of integrally prefabricating and reserving post-pouring wet joints is adopted, so that the workload of on-site large-area pouring construction of the UHPC structure layer is reduced, and the construction efficiency is remarkably improved.
本发明涉及一种钢与UHPC组合梁节段拼装湿接缝浇筑方法，该钢与UHPC组合梁采用厂内分节段预制，现场拼装成桥，最后浇筑UHPC湿接缝，其步骤为：1)钢与UHPC组合梁分段吊装、拼焊；2)顶板表面及UHPC交界面处理；3)接缝钢筋补强；4)湿接缝UHPC浇筑；5)湿接缝UHPC养护。本发明主要关键技术为UHPC湿接缝处理技术，可减少高强混凝土收缩应力，为解决高强混凝土容易产生收缩裂缝难题提供一种解决方法，工程质量可以得到进一步保证，提高钢与UHPC组合桥梁使用寿命。同时采用整体预制并预留后浇湿接缝的施工工艺，减少现场大面积浇筑施工UHPC结构层的工作量，在施工效率上有显著提高。
Steel and UHPC composite beam segment assembly wet joint pouring method
The invention relates to a steel and UHPC (Ultra High Performance Concrete) composite beam segment assembly wet joint pouring method which is characterized in that a steel and UHPC composite beam is prefabricated segment by segment in a factory and assembled into a bridge on site, and a UHPC wet joint is finally poured, and the method comprises the following steps: 1) hoisting and tailor-welding the steel and UHPC composite beam segment by segment; 2) processing the surface of the top plate and the UHPC interface; (3) reinforcing joint steel bars; (4) wet joint UHPC pouring is conducted; and (5) carrying out wet joint UHPC maintenance. The main key technology is the UHPC wet joint treatment technology, the shrinkage stress of the high-strength concrete can be reduced, a solution is provided for solving the problem that the high-strength concrete is prone to generating shrinkage cracks, the engineering quality can be further guaranteed, and the service life of the steel and UHPC combined bridge is prolonged. And meanwhile, the construction process of integrally prefabricating and reserving post-pouring wet joints is adopted, so that the workload of on-site large-area pouring construction of the UHPC structure layer is reduced, and the construction efficiency is remarkably improved.
本发明涉及一种钢与UHPC组合梁节段拼装湿接缝浇筑方法，该钢与UHPC组合梁采用厂内分节段预制，现场拼装成桥，最后浇筑UHPC湿接缝，其步骤为：1)钢与UHPC组合梁分段吊装、拼焊；2)顶板表面及UHPC交界面处理；3)接缝钢筋补强；4)湿接缝UHPC浇筑；5)湿接缝UHPC养护。本发明主要关键技术为UHPC湿接缝处理技术，可减少高强混凝土收缩应力，为解决高强混凝土容易产生收缩裂缝难题提供一种解决方法，工程质量可以得到进一步保证，提高钢与UHPC组合桥梁使用寿命。同时采用整体预制并预留后浇湿接缝的施工工艺，减少现场大面积浇筑施工UHPC结构层的工作量，在施工效率上有显著提高。
Steel and UHPC composite beam segment assembly wet joint pouring method
一种钢与UHPC组合梁节段拼装湿接缝浇筑方法
LIU ZUKANG (author) / KIM DONG-HWA (author) / CHEN JIN (author) / SHIM JUNG-KYUNG (author) / YANG LULU (author) / ZHAO DINGMING (author) / LU WENHAO (author) / SU HONGFU (author)
2023-03-14
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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