考虑起始的衬里的延期效果并且修订 Winkler 有弹性的地基模型,一条分析途径基于为管子房顶加强的 Pasternak 有弹性的地基横梁理论被提出。与某个隧道挖掘的例子,增强在地监视和分析途径之间的管子的纵的紧张的价值的比较被做。结果显示 Pasternak 当模特儿,它比 Winkler 模型在有弹性的土壤考虑一个更现实主义的假设,给更多的精确计算并且与地监视的结果更好同意。在这二个模型之间的计算结果的差别是大约 7% ,并且 Pasternak 模型被证明是学习加强机制并且改进设计实践的一个更好的方法。计算结果也表明增强的管子充当杆,它增加纵的负担转移到一个 unexcavated 区域,并且因而,减少变丑和增加面对稳定性。
Considering the delay effect of initial lining and revising the Winkler elastic foundation model, an analytical approach based on Pasternak elastic foundation beam theory for pipe roof reinforcement was put forward. With the example of a certain tunnel excavation, the comparison of the values of longitudinal strain of reinforcing pipe between field monitoring and analytical approach was made. The results indicate that Pasternak model, which considers a more realistic hypothesis in the elastic soil than Winkler model, gives more accurate calculation and agrees better with the result of field monitoring. The difference of calculation results between these two models is about 7%, and Pasternak model is proved to be a better way to study the reinforcement mechanism and improve design practice. The calculation results also reveal that the reinforcing pipes act as levers, which increases longitudinal load transfer to an unexcavated area, and consequently decreases deformation and increases face stability.