小孔扩张理论在原位测试中的应用研究进展  

RESEARCH PROGRESS ON THE APPLICATION OF CAVITY EXPANSION THEORY IN IN-SITU TESTING

作　　者：吴掌乾 李天任 李强 段伟 赵泽宁 蔡国军 路钊驰[5] 刘松玉 WU Zhangqian;LI Tianren;LI Qiang;DUAN Wei;ZHAO Zening;CAI Guojun;LU Zhaochi;LIU Songyu(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China;Anhui Institute of Intelligent Underground Detection Technology,Hefei 230601,China;College of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Zhejiang Hupingyan Railway Company Limited,Jiaxing 314000,Zhejiang,China;Institute of Geotechnical Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]安徽建筑大学土木工程学院,合肥230601 [2]安徽省智能地下探测技术研究院,合肥230601 [3]太原理工大学土木工程学院,太原030024 [4]浙江沪平盐铁路有限公司,浙江嘉兴314000 [5]东南大学岩土工程研究所,南京211189

出　　处：《力学与实践》2024年第4期689-702,共14页Mechanics in Engineering

基　　金：国家杰出青年科学基金项目(42225206);国家自然科学基金项目(52108332,42072299)资助。

摘　　要：小孔扩张理论在原位测试理论分析方面具有显著的适用性和重要性。本文主要总结和阐述了小孔扩张理论在原位测试领域如静力触探(cone penetration test,CPT)、孔压静力触探(piezocone penetration test,CPTU)、旁压试验(pressuremeter test,PMT)等近年来的相关研究成果,具体包括锥贯阻力、孔隙水压力和基于CPT/PMT法的桩基承载力预测,以及相关土性参数(强度参数,如不排水抗剪强度、内摩擦角;状态参数,如超固结比与相对密度等)解译方面的应用。最后结合室内及现场试验的应用实例分析,对基于孔扩张理论在原位测试应用中所存在的局限性和不足作了相应的总结,并指出该理论未来还需进一步完善。The cavity expansion theory has obvious applicability and importance in the theoretical analysis of in-situ testing.This paper mainly summarizes and expounds the relevant research results of the cavity expansion theory in the field of in-situ testing e.g.cone penetration test(CPT),piezocone penetration test(CPTU),pressuremeter test(PMT)in recent years,including the prediction of the cone penetration resistance,pore water pressure and bearing capacity of pile foundation based on CPT/PMT method,and the interpretation of relevant soil parameters(strength parameters such as undrained shear strength,internal friction angle,and state parameters such as over-consolidation ratio and relative density).Finally,combined with the application case analysis of indoor and field tests,the limitations and shortcomings of the cavity expansion theory in in-situ testing are summarized,and it points out that the theory needs to be further improved in the future.

关 键 词：小孔扩张理论 静力触探 孔压静力触探 旁压试验 桩基 

分 类 号：TU459[建筑科学—岩土工程]