不良地质条件及风荷载突出环境下的高速公路上跨天桥设计与施工研究

Research on the Design and Construction of Expressway Overpass under Poor Geological Condition and Outstanding Wind Load

文章以阜奈高速公路K4+516天桥工程为依托,对上跨拟建高速公路天桥施工满堂支架进行了设计。考虑不良地质条件及风荷载突出环境双重不良因素的影响,通过Midas Civil有限元软件建模,仿真分析支架施工过程中的受力及稳定性,分析结果表明,天桥现浇支架的受力及稳定性满足施工要求。文章针对天桥施工提出相关建议,以期为同类工程施工提供参考。

Based on the K4+516 overpass project of Funai expressway,the full support for the construction of the proposed expressway overpass of the upper span is designed.Considering the influence of the double adverse factors of poor geological condition and outstanding wind load environment,the force and stability of the support during the construction process are simulated and analyzed by the Midas Civil finite element software modeling.The analysis results show that,the force and stability of the cast-in-place support of the overpass meet the construction requirements.The relevant suggestions for the overpass construction are put forward,so as to provide reference for the construction of similar projects.