格丑沟特大桥主桥受力仿真分析

A Simulation Analysis of the Main Bridge of Gechougou

格丑沟特大桥位于陕西境内红柳林至神木西新建铁路线上,主桥跨径136 m钢管混凝土系杆拱桥,针对其结构特点,应用有限元分析程序MIDAS进行了受力仿真计算分析;计算结果表明:在恒载和活载作用下结构的强度、刚度和稳定性都满足规范要求,验证了结构设计的安全性;自振特性和屈曲分析表明:该桥的面外稳定性要弱于面内稳定性,分析结果对该桥的设计、施工、监控以及维护有一定的参考价值.

The Gechougou bridge is sifuated in the new railway from Hongliulin to Shenmuxi.The main bridge is a steel tube concrete tied-bar arch bridge whose span is 136 meters.For its structural characteristics,we use the finite element analysis program MIDAS to carry on a simulation analysis of the force.The results show that the structural strength,stiffness and stability can meet the specific requirements under the live load and the dead load,and the safety of the structural design is verified.The vibration chara...