Study on seismic design optimization of multistage loess slope under earthquake

Abstract

Abstract: The seismic optimization design of a multi-level loess slope under earthquake is mainly studied here. Considering practical engineering constraints of limited sloping space, multi-level loess slope with constant overall slope ratios is selected as the research object. Numerical simulations of different multi-level slope configurations are conducted using Geo-Studio finite element software. By varying the width of platform and the grade of slope, the dynamic response and stability of slope under earthquake are studied The results show that under the premise of constant comprehensive slope rate, the slope angle of each grade gradually increases with the increase of platform width. Correspondingly, the acceleration and displacement response of the slope under earthquake becomes more enhanced, and its dynamic stability first increase and then decrease. In addition, the slope angle of each grade of slope increases as the grade number of slope levels increases. The acceleration and displacement responses of the slope under seismic action show the characteristics of first increasing and then decreasing, and its seismic stability follows the same trend of first increasing and then decreasing.

Key words: comprehensive slope rate, dynamic response, stability, seismic design, platform width

CLC Number:

TU444

TAO Hui, YE Wei-na, LI Jing-bang, YE Shuai-hua, HUA Dao-xuan, ZHANG Rui-huan. Study on seismic design optimization of multistage loess slope under earthquake[J]. Journal of Lanzhou University of Technology, 2026, 52(1): 127-134.

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