岩溶发育区嵌岩桩承载特性与溶洞顶板安全风险评估

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中图分类号： TU94+3.2 文献标志码：A文章编号：1001-5922（2026）03-0830-04

Bearing characteristics of rock-socketed piles and safety risk assessment of karst cave roof in karst development areas

He Zhengguang （Nanjing Kuntuo Civil Engineering Technology Co.，Ltd.，Nanjing 21oO41，China）

Abstract：Aiming at thedual risks of bearing instabilityandroof failure faced byengineering pile foundations in karstdevelopment areas，this studyanalyzed the stress response lawand deformationcoordination mechanism of the pile-cave system under load according to the bearing characteristics of rock-socketed piles underdiferent ithology and karst cave structure conditions，and explored the determination path of the critical safety thickness of karst cave roof basedonthe limit statetheoryand numerical correction method.The research resultscan provide a structural adaptation basis for thedesign of rock-socketed pilefoundations in karst areasand improve the parameterization level of pile foundation stability judgment.

Key words：karst area;rock socketed pile;bearing characteristics;karst cave roof;critical thickness

岩溶发育区地质结构破碎复杂，溶洞分布不规则，工程桩基础在桩端嵌岩条件下常与下伏溶洞体系形成荷载耦合效应，导致局部承载力突变与顶板失稳风险增大。（剩余5895字）