防灾减灾工程学报2011，Vol.31Issue(5)：560-566,7.
西安地铁双线隧道地表沉降预测模型研究
Research on Calculation Model of Settlement Trough of Xi' an Subway with Double Lines
佘芳涛 1韩日美 2刘庚 2邵生俊1
作者信息
- 1. 西安理工大学岩土工程研究所,西安710048
- 2. 西安市地下铁道有限公司,西安710016
- 折叠
摘要
Abstract
This paper firstly introduces the worldwide-used COMPSYN software into the numerical simulation of seismic motions, and then makes a second exploitation of it with boxcar source time function replaced by bell function. Validity of modified code is confirmed by comparing it with analytical method in total space. By the comparison between spectrum characteristics of boxcar and bell function, it is pointed out that the boxcar function is rich in high frequencies, which goes against the seismic motion simulation. For the same observation, the seismic simulation results from COMPSYN code with two different source time functions show that the time-history simulated by boxcar function is featured by "ringing" and "serrate" phenomena, and it becomes worse as cut-off frequency grows, which affects the recognition of simulated seismogram, while the time-history simulated by bell function is quite smooth, which explains the rationality of bell function used in seismic motion simulation.关键词
西安地铁/饱和黄土隧道/地面沉降槽/预测计算模型Key words
seismic motion numerical simulation/ source time function/ COMPSYN software分类
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佘芳涛,韩日美,刘庚,邵生俊..西安地铁双线隧道地表沉降预测模型研究[J].防灾减灾工程学报,2011,31(5):560-566,7.
