Study on simplified calculation model of dynamic train load effect on the lower tunnel

被引：0

作者：

Zheng, Yuchao ^{[1
]}

Liu, Kai ^{[1
]}

Luo, Chuanjiang ^{[1
]}

Qiu, Wenge ^{[1
]}

Gong, Lun ^{[1
]}

机构：

[1] Southwest Jiaotong University, Chengdu,610031, China

来源：

Tumu Gongcheng Xuebao/China Civil Engineering Journal | 2017年 / 50卷

关键词：

3-D numerical analysis - Calculation models - Deduction coefficient - Differential coefficient - Longitudinal direction - Simplified calculation models - Simplifying method - Train loads;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The railways intersect the lower Tunnels locally, it is necessary to adopt 3-D numerical analysis method to get the correct results comparatively. Based upon the engineering of three parallel shield tunnel under through the Shanghai-Hangzhou main railway in Shanghai Track Transportation No. 9 Line, the calculation model simplifying method was studied according to the pressure of lining crown(reference position). Firstly, the distribution law and diffusion extent of the crown pressure along the longitudinal direction were attained, also the nonuniformity coefficient Ku under the train moving loading by 3-D calculation. Secondly, a longitudinal 2-D dynamic model was established to study the relationship of Ku with the depth of the tunnel, and the results between the 2-D model and 3-D model in the same depth were checked. Therefore, we manage to simplify the 3-D model to 2-D model by adopting a synthesized loading deduction coefficient Kf, which was considered the influences of the diffusion extent, nonuniformity coefficient and the differential coefficient Km between 2-D model and 3-D model. © 2017, Editorial Office of China Civil Engineering Journal. All right reserved.

引用

页码：25 / 30