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现场的实验数据在美国和日本,对如何决定土壤和管道的相互作用问题有很多的实践经验。为了解决管道的抗震设计,做了许多关于土壤—管道相互制约的实验。Nishio用设在振动台上的1:100比例模型做的实验结果,和1982年以来日本在三个不同地区24次地震中所见到的管道被破坏情况(地面为软厚土层)完全一致。基于这项实验及其他的研究,关于土壤—管道互相制约的问题在日本得到以下结论:①还没有证据可以证明,在两个计量测定点之间,存在与距离成正比例的相位差。②在地震发生时,管道应力对应于地层的
The field experimental data in the United States and Japan have a lot of practical experience on how to determine the interaction between soil and pipeline. In order to solve the seismic design of the pipeline, a lot of experiments on the soil-pipeline mutual control have been done. Nishio’s experiment with a 1: 100 scale model on a vibrating table is exactly the same as the damage to the pipeline seen in Japan’s 24 earthquakes in three different regions since 1982 (the ground is soft and thick) . Based on this and other studies, the issue of soil-to-pipeline constraints has led to the following conclusions in Japan: (1) There is no evidence that there is a phase difference proportional to the distance between the two metered points. ② In the earthquake, the pipe stress corresponds to the formation