高原地区某市政地通道结构的分析探讨

Analysis and Discussion on the Structure of a Municipal Underpass in a Plateau Area

根据高原地区某地通道结构的受力特征,基于荷载结构法建立理正、MIDAS两种数模工况,对高原地区独特地质条件下的地通道结构进行充分的数模分析,结果表明:不同计算软件、计算方法计算出来的最不利内力情况相差不大,证明数模有一定的可行性;通过最不利工况情形下的内力特征,对主通道结构进行配筋结构设计,结果符合国家相应规范对抗震、抗裂、安全稳定性的要求。另外,在高原地区独特的工程地质及水文地质条件下作业,特别注意地基承载力要符合要求,同时要加强防排水措施和周边环境的监控量测,防止因其他因素引起内力超限现象发生。

According to the force characteristics of a certain underpass structure in plateau area, two digital-analog working conditions such as Lizheng and MIDAS are established based on load structure method. The numerical analysis of the underpass structure under the unique geological conditions of the plateau region is carried out. The results show that the most unfavorable internal forces calculated by different calculation software and calculation method have little difference, which proves that the digital - analog is feasible. Through the internal force characteristics of the most unfavorable conditions, the design of reinforcement structure on main channel structure is carried out. The results meet the requirements of the corresponding national norms for earthquake resistance, crack resistance, safety and stability. In addition, when the work is carried out under the unique engineering geological and hydrogeological conditions in the plateau area, special attention should be paid to the bearing capacity of the foundation to meet the requirements. At the same time, it is necessary to strengthen the monitoring and measurement of waterproof and water drainage measures and the surrounding environment to prevent the excessive internal force caused by other factors.