Monitoring method of equivalent horizontal displacement of foundation pit surrounding pile based on inverse finite element

doi:10.11947/j.AGCS.2024.20220686

Abstract

Abstract: Aiming at the limitations of the traditional geodetic method in monitoring the deformation of the retaining piles in deep foundation pits, a stress-equivalent geometric deformation monitoring method based on inverse finite elements is proposed. The inverse finite element algorithm is used to establish the correlation model, and the geometric deformation of the retaining piles under the pressure of the soil is equivalently solved, and the model is verified by simulation and examples. The experimental results show that under different working conditions, the inverse finite element relationship model can realize the equivalent conversion of pile displacement, and has good accuracy and robustness. This method makes up for the deficiencies of traditional monitoring methods in internal monitoring of structures, provides a new idea for deformation monitoring of underground spaces such as retaining piles around deep foundation pits, and plays a positive role in promoting the automation of monitoring work and scientifically predicting deformation.

Key words: deep foundation pit retaining pile, inverse finite element, equivalent deformation, precision analysis, robustness

CLC Number:

P258

ZHANG Yuxuan, LONG Sichun, LAI Xiangen, KUANG Lijun, SU Ruipeng, LU Shide, ZHANG Liya, ZHOU Jian, LUO Dong, LIAO Mengguang. Monitoring method of equivalent horizontal displacement of foundation pit surrounding pile based on inverse finite element[J]. Acta Geodaetica et Cartographica Sinica, 2024, 53(1): 126-136.

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