Study on the deformation of pit induced by leakage on diaphragm wall under complicated geological conditions

Qingshan Wang; Minmin Jiang; Hailu Lu; Ning Cao; Weili Chai

doi:10.1117/12.3035489

10 July 2024 Study on the deformation of pit induced by leakage on diaphragm wall under complicated geological conditions

Qingshan Wang, Minmin Jiang, Hailu Lu, Ning Cao, Weili Chai

Author Affiliations +

Proceedings Volume 13223, Fifth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2024); 132230X (2024) https://doi.org/10.1117/12.3035489
Event: 2024 5th International Conference on Geology, Mapping and Remote Sensing (ICGMRS 2024), 2024, Wuhan, China

Abstract

Defects often emerged on diaphragm wall of pit foundation during construction period, which is a key problem that causes engineering disasters. A finite element model considering the leakage on diaphragm wall is established based on numerical method, to study soil settlement and lateral displacement of diaphragm wall caused by excavation and leakage under complicated geological conditions. The research shows that when diaphragm wall has is leakage hole, the soil increases significantly due to the consolidation of soil layer above the leakage hole, and the deeper the leakage hole is, the greater the maximum settlement resulted. When the depth of the leakage hole is 2.5m and 18m, the maximum settlement increases by 69% and 235% compared with that without leakage. Under the influence of increasing effective consolidation stress of soil layer above the leakage hole, an increase of horizontal displacement on diaphragm wall resulted, as the depth of the leakage hole increased from 2.5m to 18m, maximum horizontal displacement increases approximately 18% and 44% compared with no leakage conditions.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qingshan Wang, Minmin Jiang, Hailu Lu, Ning Cao, and Weili Chai "Study on the deformation of pit induced by leakage on diaphragm wall under complicated geological conditions", Proc. SPIE 13223, Fifth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2024), 132230X (10 July 2024); https://doi.org/10.1117/12.3035489

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