Progress in the Bearing Performance Research of Underlying Roof in Karst Pile Foundations

Wang Xinquan; Chen Haitao; Hu Haibo; Diao Hongguo; Cui Yunliang; Li Xiao

doi:10.12052/gdutxb.250018

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Progress in the Bearing Performance Research of Underlying Roof in Karst Pile Foundations

更新时间：2026-05-27

- Progress in the Bearing Performance Research of Underlying Roof in Karst Pile Foundations
- Vol. 42, Issue 2, Pages: 112-120(2025)
- 作者机构：
  
  1. 浙大城市学院工程学院,浙江,杭州,310015
  2. 浙江大学建筑工程学院,浙江,杭州,310058
  3. 浙江省城市盾构隧道安全建造与智能养护重点实验室,浙江,杭州,310015
  4. 城市基础设施智能化浙江省工程研究中心,浙江,杭州,310015
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.250018
  CLC： TU473
- Published：2025
- 稿件说明：
移动端阅览
王新泉, 陈海涛, 胡海波, 等. 岩溶桩基下伏顶板承载性能研究进展[J]. 广东工业大学学报, 2025, 42(2): 112–120.

Wang Xinquan, Chen Haitao, Hu Haibo, et al. Progress in the Bearing Performance Research of Underlying Roof in Karst Pile Foundations[J]. 2025, 42(2): 112-120.
王新泉, 陈海涛, 胡海波, 等. 岩溶桩基下伏顶板承载性能研究进展[J]. 广东工业大学学报, 2025, 42(2): 112–120. DOI： 10.12052/gdutxb.250018

Wang Xinquan, Chen Haitao, Hu Haibo, et al. Progress in the Bearing Performance Research of Underlying Roof in Karst Pile Foundations[J]. 2025, 42(2): 112-120. DOI： 10.12052/gdutxb.250018.

摘要

针对岩溶桩基下伏顶板承载性能，总结归纳了岩溶桩基下伏顶板破坏形态的影响因素，整合了顶板敏感因素对自身承载、桩端承载的影响，分析了顶板安全厚度计算的影响因素及顶板对桩端承载性能的影响。研究结果表明：顶板破坏模式在理想条件下主要分为顶板较薄的冲切破坏(

≤2

)、顶板稍厚的剪切破坏(2

≤4

)、顶板很厚(

)的弯拉破坏，其影响因素主要是板厚；安全厚度的计算结果大多集中于2~4倍桩径，影响因素主要为岩土体强度、桩径、工况、计算假定、计算模型等；桩基承载力的发挥程度极大地依靠顶板自身的强度、嵌岩深度，其余影响因素普遍存在阈值；顶板安全厚度计算方法因所考虑因素以及工况而有所不同，指出了合理公式的采用建议。

Abstract

Aiming at the bearing capacity of the top plate under karst pile foundation

the influencing factors of the failure form of the top plate under karst pile foundation are summarized

the influence of the sensitive factors of the top plate on its own bearing capacity and the bearing capacity of the pile end are integrated

and the influencing factors of the calculation of the safe thickness of the top plate and the influence of the top plate on the bearing capacity of the pile end are analyzed. The research results show that under ideal conditions

the failure mode of the top plate is mainl

y divided into shear failure of thin top plate (

≤2

)

shear failure of slightly thick top plate (2

≤4

)

bending and tensile failure of very thick top plate (

)

and the influencing factors are mainly the plate thickness; the calculation results of the safe thickness are mostly concentrated in 2~4 times the pile diameter

and the influencing factors are mainly the strength of the rock and soil

the pile diameter

the working conditions

the calculation assumptions

the calculation model

etc.; the degree of the bearing capacity of the pile foundation depends greatly on the strength of the top plate itself and the rock embedding depth

and the other influencing factors generally have thresholds; the calculation method of the safe thickness of the top plate varies depending on the factors considered and the working conditions

and the adoption of reasonable formulas is suggested.

关键词

Keywords

references

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