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《Chinese Journal of Rock Mechanics and Engineering》 2004-S2
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NUMERICAL ANALYSIS OF ELASTOPLASTIC FINITE ELEMENT IN CONSTRUCTION OF TWIN-ARCH TUNNEL

Shen Yusheng, Zhao Yuguang, Zhang Huanxin, Guo Wei, Lin Zhiyuan, Wan Youming Zhang Hongqi, Li Zhi (School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031 China) (Guanghui Express Highway Ltd. Co., Guangzhou 510630 China)  
Based on the cases of the Xiaojinkou twin-arch tunnel of Guangzhou-Huizhou Highway and the Xiedipo twin-arch runnel of the Yibin-Shuifu Highway, the elastoplastic model of the plane stain is established and the elastoplastic behavior of the construction of the twin-arch tunnel is simulated and analyzed by the finite element. The distribution model of the plastic zones is put forward for the different execution procedures of the twin-arch tunnel. By analyzing these plastic zones, the dangerous zones of the surrounding rock masses and emphases and difficulty in the supporting and monitoring are pointed out.
【Fund】: 广东省交通厅科技项目(2002-14)
【CateGory Index】: U455
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