Centrifugal model tests on stability of maritime dams constructed by geobag-solidified soil

WANG Xuekui; ZHU Yaoting; HU Jianjun; CHENG Ming

doi:10.11779/CJGE2023S10018

Volume 45 Issue S1

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Chinese Journal of Geotechnical Engineering > 2023 > 45(S1): 218-221. > DOI: 10.11779/CJGE2023S10018

WANG Xuekui, ZHU Yaoting, HU Jianjun, CHENG Ming. Centrifugal model tests on stability of maritime dams constructed by geobag-solidified soil[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S1): 218-221. DOI: 10.11779/CJGE2023S10018

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Centrifugal model tests on stability of maritime dams constructed by geobag-solidified soil

1.
CCCC Tianjin Port Engineering Institute Co., Ltd., Tianjin 300222, China
2.
CCCC First Habor Engineering Co., Ltd., Tianjin 300461, China

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Received Date: July 04, 2023
Available Online: November 23, 2023

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Abstract

Abstract

The technology of maritime dams constructed by geobag-solidified soil saves the increasingly scarce sand and gravel resources and solves the problem of disposal of slag and dredged spoil. It has broad application prospects. Relying on a maritime dam project in Tianjin Port, the centrifugal model tests are carried out to study the overall stability and deformation of the maritime dam filled with solidified soil using slag and dredged spoil as the main raw materials, and the variation laws of soil pressure and pore water pressure in the foundation are analyzed. The test results show that the settlements of the maritime dam constructed by geobag-solidified soil and the foundation mainly occur during the filling period, and the settlement rate is large. Within the scope of the maritime dam, the settlements are distributed in a bell shape, which are large in the middle and small at both sides. Seen from the settlement curve of the mud surface at the toe of the maritime dam and the dissipation of pore water pressure, under the normal conditions, the maritime dam filled with solidified soil and the foundation can remain stable. The instability failure of the maritime dam filled with solidified soil as well as that of the foundation is now a circular sliding one. The deformation is mainly settlement, and the horizontal displacement is small. The geotextile bag has a strong constraint on the horizontal deformation of the maritime dam. The safety factor of stability obtained through the centrifugal model tests is 1.59.
- slag,
- dredged spoil,
- geobag,
- stability,
- centrifugal model test

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