桩-土接触面静动力特性研究进展  

Research Progress in Static and Dynamic Characteristics of Pile-Soil Interface

作　　者：刘涛[1] 彭华中 王勇[3,4] 王艳丽[5] 

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]武汉市测绘研究院,武汉430022 [3]中国科学院武汉岩土力学研究所,武汉430070 [4]中国科学院岩土力学与工程国家重点实验室,武汉430071 [5]长江科学院水利部岩土力学与工程重点实验室,武汉430010

出　　处：《长江科学院院报》2013年第12期74-81,共8页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金(41102229);湖北省自然科学基金(2011CDB407)

摘　　要：寻求合适的方法对接触面的微观变形机理展开深入和系统的研究,阐明桩-土接触面力学特性的本质;开展特殊土与桩接触界面的静动力特性研究,提高桩基在复杂地质条件下的可靠度。简要回顾了国内外有关桩-土接触面静动力学特性的研究进展,阐述了桩-土接触面在静力和动力试验、接触面本构模型、接触面单元以及桩-土接触模型试验和现场试验中所取得的成果,并分析了以上研究中存在的问题与不足,对有效把握桩基承载性能及类似工程的研究具有重要的意义。The research progresses in static and dynamics tests, constitutive models, interface elements, model tests and field tests of pile-soil interface are summarized, and the problems and deficiencies in the current research are analyzed. It is pointed out that research on the dynamic characteristics of pile-soil interface widely seen in practical engineering are in lack. Especially, big-size experimental instruments which can realize different loading methods to research the complex dynamic characteristics should be developed. More suitable constitutive model should be developed to describe the complex mechanical behaviors under complex stress conditions and different stress paths, and the interface element should be improved. It is necessary to seek a suitable method to intensively and systemati- cally study the microscopic deformation mechanism so as to clarify the mechanism of its mechanical properties. Re- search on static and dynamic characteristics of interface between piles and problematic soils should be carried out to improve the reliability of pile foundation under complex geological conditions.

关 键 词：桩-土接触 静动力特性 本构模型 接触面单元 

分 类 号：TU473.1[建筑科学—结构工程]