现代胶合木拱桥结构性能评价

Structural performance assessment of a glulam arch bridge

近年来由于减少人行天桥对环境影响的意识逐渐增强,使得现代木结构桥梁广受关注。为分析某胶合木拱桥的稳定性和评价其承载能力是否满足设计要求,进行了结构有限元仿真分析和现场静载试验。采用实桥理论计算、现场试验和试验结果与计算结果对比分析的方法,研究桥梁的稳定性和静荷载作用下的工作状况。综合桥梁静载试验效应与校验系数的分析结果,进而对桥梁的结构性能做出评价,为桥梁运营期间的安全性提供科学的数据资料。调查和研究结果表明:现代胶合木结构人行拱桥不仅表现出良好的工作性能,而且较建造同跨径混凝土结构桥梁和钢桥更具经济效益,其建造过程还能最大限度减少对生态环境的影响。

In recent years, due to the increasing awareness of reducing the impact of pedestrian overpasses on the environment, modern glulam bridge has attracted wide attention. In order to analyze the stability of a glulam arch bridge and evaluate whether its bearing capacity meets the design requirements, structural finite element simulation analysis and on-site static load test are carried out. The stability of the bridge and its working condition under static load were studied by using the analysis method of theoretical calculation of an actual bridge, field test and comparison of tested results with calculation results. The analysis results of bridge static load test effect and check coefficient were combined, the structural performance of the bridge was evaluated, thus providing scientific data for the safety of the bridge during operation. The results show that the modern glulam pedestrian arch bridge not only showed good working performance, but also had more economic benefits than the construction of the same span concrete structure bridge and steel bridge, and in the construction process, the effects of construction work activities on the ecological environment can be minimized.