莲花村地铁车站初期支护失效模型研究
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摘要
建筑物可靠度研究已历经了近一个世纪,取得了丰硕的研究成果。研究大多集中于土质均匀、围岩状态良好的地质环境,但对地下建筑工程的可靠度研究很少。随着地下空间的不断开发,地质条件也越发复杂,因此建立合适有效的结构失效模型,进而建立结构功能函数仍存在广阔的研究空间。基于重庆市轨道交通环线莲花村地铁车站,围岩为含软弱夹层的陡倾岩层施工中,对现场位移进行实时监测,并采用MIDAS/GTS有限元软件进行数值模拟,通过对比分析监控量测实测数据与数值模拟数据的变化规律,验证基于莲花村车站建立的含软弱夹层的陡倾岩层初期支护的失效模型。
Over a century,study on reliability of buildings has made fruitful progress.However,little study has been conducted to reliability of underground buildings,as most of them mainly focused ongeological environment with good soil quality and good surrounding rock status.With the continuous development of underground space,the geological conditions also become more and more complex.Therefore,there still remains broad space to set up structural function by establishing a suitable and effective structural failure model.Based on the characteristics of steep stratum with weak interlayer of surrounding rock of Lianhuacun substation in Chongqing,the on-site displacement was monitored in real time and numerical simulation was carried out by using MIDAS/GTS finite element software.By comparing and analyzing the monitoring data and the variation law of numerical simulation data,the failure model of initial support of steep stratum with weak interlayer of surrounding rock of Lianhuacun substation was verified.
Over a century,study on reliability of buildings has made fruitful progress.However,little study has been conducted to reliability of underground buildings,as most of them mainly focused ongeological environment with good soil quality and good surrounding rock status.With the continuous development of underground space,the geological conditions also become more and more complex.Therefore,there still remains broad space to set up structural function by establishing a suitable and effective structural failure model.Based on the characteristics of steep stratum with weak interlayer of surrounding rock of Lianhuacun substation in Chongqing,the on-site displacement was monitored in real time and numerical simulation was carried out by using MIDAS/GTS finite element software.By comparing and analyzing the monitoring data and the variation law of numerical simulation data,the failure model of initial support of steep stratum with weak interlayer of surrounding rock of Lianhuacun substation was verified.
引文
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[3]赵国藩,曹居易,张宽权.工程结构可靠度[M].北京:科学出版社,2011.
[4]谭忠盛,王梦恕.隧道衬砌结构可靠度分析的二次二阶矩法[J].岩石力学和工程学报,2004,23(13):2243-2247.
[5]RABCEWICZ L V,GOSLER J.Principles of dimensioning the support ystem for the New Austrian Tunnelling Method[J].Water Power,1973,25(3):88-93.
[6]陈凯江.隧道施工监控量测及数据反分析技术研究[D].北京:北京工业大学,2013.
[7]刘文斌.陡倾含软弱夹层围岩隧道初期支护可靠度研究[D].重庆:重庆大学,2016.
[8]杨林德,萧蕤,罗立娜.软弱岩层中隧道结构体系的可靠度[J].同济大学学报(自然科学版),2004,32(6):705-709.