拱肋少支架桅杆吊装过程有限元分析

Finite Element Analysis in Hoisting and Setting Process of Arch Ribs with Brackets and Masts

根据在建的湖北恩施市凤凰大桥拱肋少支架桅杆吊装施工方案,应用MIDAS/civil软件建立了支架、桅杆和贝雷架的有限元模型,对拱肋节段的运输、起吊与就位安装施工过程的静力和稳定性进行了详细分析,验证了拱肋少支架桅杆吊装方案的可行性,也为此类桥梁的设计和施工提供参考。

According to the arch ribs＇ hoisting construction scheme of Fenghuang Bridge under construction in Enshi City of Hubei Province, the FEM models of brackets and masts and bailey are established using software MIDAS/civil. The static and stable performances in transporting and hoisting and setting process of arch ribs have been analyzed in details. Conclusions from this paper indicate the scheme that masts are used in hoisting course of arch ribs is validated and also should provide valuable references to the design and construction of similar projects.