土与结构界面接触问题研究进展评述

针对土与结构相互作用研究中的土-结构界面接触问题, 本文从界面接触力学特性及界面接触模拟两个方面的研究展开评述. 分析了接触面(带)的力学特性和变形分布规律方面的试验方法和取得的成果, 讨论了现有试验方法的不足;随后, 对土-结构界面接触行为的两类模拟方法--接触面单元方法和接触力学方法进行了讨论;最后提出了今后工作的重点.

REVIEW ON MECHANICAL PERFORMANCE OF SOIL-STRUCTURE CONTACT

In the fields of civil engineering and earthquake engineering, soil and structure dynamic interaction is a research hotspot. It is very important to properly simulate the mechanical performance of soil-structure interface in the numerical analyses of soil and structure dynamic interaction. In this paper, some conclusions are drawn by analyzing the research status in this field. First, technical devices need to be developed and test technologies be improved so that the real mechanical state of Soil-Structure contact could be perfectly revealed. And then, the study on mechanical performances and failure mechanism could be deepened with the help of newly developed test technologies and new test results of Soil-Structure interfaces, in which emphasis should be laid on the rate-dependent mechanical characteristics. Finally, improvement of numerical simulation methods highlighted by the achievements mentioned above is now desirable and feasible. To sum up, all the three steps together form one of the future trends in the research of Soil-Structure dynamic contact.