| 岩体初始应力场识别的随机方法 |
| |
| 引用本文： | 李守巨,刘迎曦,王登刚,刘玉静.岩体初始应力场识别的随机方法[J].岩土力学,2000,21(2):126-129. |
| |
| 作者姓名： | 李守巨 刘迎曦 王登刚 刘玉静 |
| |
| 作者单位： | (大连理工大学 工程力学系 ,辽宁 大连 116023) (长春煤炭干部管理学院 ,吉林 长春 130012) |
| |
| 基金项目： | 国家自然科学基金资助项目 !(批准号 :597790 0 3)，辽宁省科学基金资助项目，工业装备结构分析国家重点实验室资助项目 |
| |
| 摘 要： | 利用地下隧道开挖后变形收敛观测数据 ,采用最小二乘法研究了岩体初始应力场识别问题。 考虑了变形观测的随机性 ,建立了岩体初始应力场参数识别的随机方法 ,研究了变形观测的随机特性对识别结果的影响。待识别参数对目标函数的灵敏度越低 ,参数识别结果的标准差就越大 ,其可识别性越差
|
| 关 键 词： | 初始应力场 参数识别 随机方法 观测信息 最小二乘法 |
| 收稿时间： | 1999-05-24 |
| 修稿时间： | 1999-05-24 |
Identification of initial stress field parameters in the rock mass with the stochastic method |
| |
| Li Shouju,Liu Yingxi,Wang Denggang,Liu Yujing.Identification of initial stress field parameters in the rock mass with the stochastic method[J].Rock and Soil Mechanics,2000,21(2):126-129. |
| |
| Authors: | Li Shouju Liu Yingxi Wang Denggang Liu Yujing |
| |
| Institution: | ( Department o f Engineering Mechanics, Dalian University of Technology , Dalian 116023, China) ( Changchun Coal management Cadre Institute, Changchun 130012, China ) |
| |
| Abstract: | By means of the least square method, the initial stress field parameters are identified according to the measured data of transformation of the rock when the underground tunnel is excavated. Considering the stochastic characteristic, a stochastic method to identify the initial stress parameters in rock mass is established in this paper. The affection of the stochastic characteristic of the transformation measurement is studied as well. The numerical results show that the lower the sensibility of the objective function to the identified parameters, the larger the standard deviation of the identified results, and the worse the identifiable characteristic of the parameter. |
| |
| Keywords: | initial stress field parameter identification stochastic method measuring information the least square method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
