Stability Analysis on Foundation Treatment for a Transverse Karst Cave in Guiyang

ZHANG Beibei; WU Tingliang; WANG Yusong; JIN Mingchao

doi:10.13204/j.gyjzG21032405

Volume 52 Issue 4

Jul. 2022

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ZHANG Beibei, WU Tingliang, WANG Yusong, JIN Mingchao. Stability Analysis on Foundation Treatment for a Transverse Karst Cave in Guiyang[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(4): 133-139. doi: 10.13204/j.gyjzG21032405

Citation:

ZHANG Beibei, WU Tingliang, WANG Yusong, JIN Mingchao. Stability Analysis on Foundation Treatment for a Transverse Karst Cave in Guiyang[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(4): 133-139. doi: 10.13204/j.gyjzG21032405

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Stability Analysis on Foundation Treatment for a Transverse Karst Cave in Guiyang

doi: 10.13204/j.gyjzG21032405

1. Guiyang University, Guiyang 550000, China;
2. Guizhou University, Guiyang 550000, China;
3. The First Engineering Co., Ltd., China Railway Urban Construction Group, Changsha 410205, China

Received Date: 2021-03-24
Available Online: 2022-07-25

Abstract

Abstract

The stability of karst foundation is an important guarantee for the safety of ground buildings. Taking an actual engineering of treatment for a giant karst cave under a high-rise building in Guizhou Province as an example, the stability for the roof subjected to building loads was analyzed used by the structural mechanics approximation method and finite element method. By the numerical simulation software FLAC^3D, the calculation models of foundation with karst caves filled with different materials and ranges were constructed to calculate the characteristics of the strain field and stress field in the cave roof and ground under building loads. The materials filled in karst caves were fine aggregate concrete and crushed stone respectively, and the filling ranges included the whole void and the partial void in the side of the building. The deformation characteristics of overlying foundation in four working conditions were compared and analyzed. The results showed that the numerical analysis consonant with the actual monitoring data, and the treated foundation with complex karst cavities was stable under the action of pile loads, and the filling effect of fine aggregate concrete was better than that filled by gravel material. On the basis of ensuring the safety for the building, the partial filling scheme could save more cost for the project.
- treatment for karst cave,
- foundation,
- stability,
- numerical analysis

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References(17)

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