摘要
对于隧洞支护设计而言，如何确定围岩对支护的作用力十分重要。由于岩体结构特性十分复杂，利用现有的岩体力学模型作出的计算尚不能达到令人满意的结果。考虑到位移量测方法较为简单，花费省， 且结果较可靠， 因此本文将金属支架作为平面弹性结构， 以现场金属支架上量测出测点间的观测值为依据，提出借助自由网平差的伪逆解法。
It is quite important in design of tunnel support to determine the load from the rock to the support. Due to the complexity of the character of the rock structure, the calculation based on present model of rock mechanics cannot give a satisfactory result. The measurement of displacement is rather simple and not costly and the result is rather reliable. In this paper, taking the metal support as plane elastic structure, based on the measured value of the points on the support, the external load from the rock on the support was inversely calculated by the pseudo inverse solution with the mean difference on the free network.
出处
《地下空间》
CSCD
1999年第3期169-173,共5页
Underground Space
基金
校青年科学基金
关键词
位移反分析
金属支架
自由网平差
隧洞
围岩压力
inverse analyses of displacement, metal support, mean difference on free network, pseudo inverse solution
