WANG Bo,YAN Lin,XU Jianguo.Centrifuge Shaking Table Testing of Earth⁃rock Dam with Polymer Diaphragm Wall[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(01):1-11.
WANG Bo,YAN Lin,XU Jianguo.Centrifuge Shaking Table Testing of Earth⁃rock Dam with Polymer Diaphragm Wall[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(01):1-11. DOI: 10.13409/j.cnki.jdpme.2021.01.001.
Centrifuge Shaking Table Testing of Earth⁃rock Dam with Polymer Diaphragm Wall
In order to study the seismic response of polymer diaphragm walls, centrifuge shaking table tests of earth-rock dams with polymer and concrete diaphragm walls were carried out. Under the condition of El-Centro seismic wave input with the amplitude modulation of 0.2 g and 0.4 g, the dynamic stress of the wall, excess pore water pressure, dynamic earth pressure, acceleration of the dam body, and settlement at the dam crest were collected, analyzed and verified by excavation. The results show that the dynamic stress of the polymer diaphragm wall under strong earthquake is much smaller than that of the concrete diaphragm wall, and the dynamic response is consistent with the acceleration response of the dam body. However, the transfer of dynamic forces brings more lateral earth pressure on the downstream slope of the dam. The study shows that the polymer diaphragm wall has superior deformation coordination and seismic performance, but for earth-rock dams with polymer diaphragm walls, more attention should be paid to the reinforcement treatment of downstream slopes.
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