岩溶顶板稳定性对桩基承载性能影响研究进展

Research Progress on the Influence of Karst Roof Stability on the Bearing Capacity of Pile Foundations

基于岩溶区桩基承载性能问题,从研究方法、岩溶发育程度、影响因素3个层面对岩溶顶板稳定性对桩基承载性能影响进行介绍,并对其未来发展方向进行了展望。结果表面:①岩溶顶板稳定性对桩基承载性能影响研究方法有理论研究、现场及室内试验、数值分析;②对岩溶地区进行桩基础工程设计时需重复考虑该地区的岩溶发育程度;③岩溶顶板强度、岩溶顶板倾倒角度、岩溶顶板厚度为岩溶区桩基承载性能的主要影响因素;④实际工程缺乏实地观测和实测数据支撑,需要加强岩溶地区桩基与岩溶顶板之间的关系研究,还需要进行更多的室内试验和数值模拟分析,以深入研究岩溶顶板的形成机制和工程特性。

Based on the bearing performance of pile foundations in karst areas,the article introduces the impact of karst roof stability on the bearing performance of pile foundations from three aspects:research methods,karst development degree,and influencing factors,and prospects its future development direction.The results indicate that:①there are theoretical research,on-site and indoor experiments,and numerical analysis methods for studying the impact of karst roof stability on the bearing performance of pile foundations;②When designing pile foundation engineering in karst areas,it is necessary to repeatedly consider the degree of karst development in the area;③The strength of karst roof,the inclination angle of karst roof,and the thickness of karst roof are the main influencing factors on the bearing capacity of pile foundations in karst areas;④The actual engineering lacks on-site observation and measured data support,and it is necessary to strengthen the research on the relationship between pile foundations and karst roof in karst areas.More indoor experiments and numerical simulation analysis are also needed to deeply study the formation mechanism and engineering characteristics of karst roof.