Numerical Analysis of the Deformation and Stress ofWaste Landfill&rsquo;s Diaphragm Wall

WANG Ying-cai; DAI Guo-zhong; SHI Gui-cai

doi:10.3969/j.issn.1001-5485.2015.08.016

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Journal of Changjiang River Scientific Research Institute ›› 2015, Vol. 32 ›› Issue (8) : 89-93. DOI: 10.3969/j.issn.1001-5485.2015.08.016

ROCK SOIL ENGINEERING

Numerical Analysis of the Deformation and Stress ofWaste Landfill’s Diaphragm Wall

WANG Ying-cai¹, DAI Guo-zhong², SHI Gui-cai²

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Abstract

In order to make sure that the deformation behavior of waste landfill’s vertical diaphragm wall meets requirements, we conducted nonlinear simulation on the deformation and stress of plastic diaphragm wall using ANSYS. The diaphragm wall of industrial waste landfill at Jashanzi in Changzhou, Jiangsu province was taken as an example. The plastic diaphragm wall was poured from anti-seepage slurry with bentonite, cement, and fly ash as main materials. Results reveal that the stress and deformation of the diaphragm wall meet the requirements. The stress and horizontal displacement both reached maximum at the bottom of the wall, the principal stress of wall increased at the clayey stratum, and no tensile stress was found; the maximum horizontal displacement of the wall is in linear relationship with the square of wall height. The results are reasonable and provide theoretical basis for engineering design and operation of waste landfill’s diaphragm walls.

Key words

waste landfill / plastic diaphragm wall / stress and deformation / horizontal displacement / wall height / numerical analysis

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WANG Ying-cai, DAI Guo-zhong, SHI Gui-cai. Numerical Analysis of the Deformation and Stress ofWaste Landfill’s Diaphragm Wall[J]. Journal of Changjiang River Scientific Research Institute. 2015, 32(8): 89-93 https://doi.org/10.3969/j.issn.1001-5485.2015.08.016

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