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镇江京杭运河特大桥是京沪高铁沿线最大跨度(90+180+90)m连续梁-拱组合桥,钢管拱的安装经不同安装方案对比分析采用100t汽车式起重机桥面开行、支架原位拼装的方案。介绍了该实施方案的计算分析、支架设计、不利工况验算、汽车式起重机选择,下部连续梁施工安全性验算,验证了方案的可行性及安全性,从而有效地保证施工安全和质量。
The Beijing-Hangzhou Grand Canal Bridge is the largest span (90 + 180 + 90) m continuous beam-arch composite bridge along the Beijing-Shanghai high-speed railway. The installation of steel pipe arch is contrasted and analyzed by different installation schemes. The 100t truck crane bridge deck Program. This paper introduces the calculation and analysis, the design of stents, the checking of unfavorable conditions, the choice of truck crane and the construction safety of the lower continuous girder. The feasibility and safety of the scheme are verified, so as to effectively ensure the construction safety and quality.