摘要
近些年,我国在公路隧道方面的研究日渐深入,其中公路隧道的安全性与经济性备受关注。因此基于对惠龙高速红花顶隧道的研究,采用MIDAS/GTS有限元软件建立隧道数值模型对红花顶隧道Ⅳ级围岩进行数值模拟,用荷载结构法计算衬砌内力,建立全断面法和台阶法施工阶段模型,对比两个开挖方法 ,选定台阶法为Ⅳ级围岩施工方案,最后进行台阶法的施工优化,虽然降低了一定的支护强度,但使得工程更加经济,对施工具有一定的指导意义。
In recent years, the research on highway tunnel in our country is deepening day by day, among which the safety and economy of highway tunnel attracts much attention. Therefore, based on the research of Honghuading tunnel of Huilong expressway, MIDAS/GTS finite element software is used to establish a tunnel numerical model to numerically simulate the grade IV surrounding rock of Honghuading tunnel. The load structure method is used to calculate the internal force of lining and the construction stage models of full-section method and step method are established. The two excavation methods is compared, and then selects the step method as the construction plan for grade IV surrounding rock. Finally, the construction optimization of the step method is carries out. Although this method reduces the support strength to a certain extent, but makes the project more economical. The step method has certain guiding significance for construction.
作者
刘昌盛
吴东炎
Liu Changsheng;Wu Dongyan(Guangdong Honggao Construction Co.,Ltd.,Dongguan 410076,Guangdong)
出处
《陕西水利》
2022年第10期106-109,共4页
Shaanxi Water Resources
关键词
公路隧道
施工优化
数值模拟
惠龙高速红花顶隧道
Highway tunnel
construction optimization
numerical simulation
Honghuading tunnel of Huilong expressway
