西南交通大学学报2025，Vol.60Issue(5)：1170-1177,8.DOI:10.3969/j.issn.0258-2724.20230640
基于流固耦合分析的高墩渡槽止水地震失效分析
Seismic Failure Analysis of High-Pier Aqueduct Water-Stop Based on Fluid-Solid Coupling
摘要
Abstract
To explore the water-stop performance of a large-scale high-pier aqueduct under earthquakes,a finite element model of the aqueduct was established based on the fluid-solid coupling method,and the nonlinear coupling behavior of the aqueduct and water under dynamic effects was simulated.By introducing the deformation and failure threshold of the water-stop,the failure process between the aqueduct spans was reproduced,and the overflow of the water body in the aqueduct after the water-stop failure was revealed.Based on an actual high-pier aqueduct structure,the macro-and micro-seismic response of the aqueduct was obtained through nonlinear dynamic analysis,including pier strain,bearing displacement,and water-stop damage.The impact of different bearing types and seismic isolation devices on the seismic performance of aqueducts was revealed.The research results show that under rare earthquakes,severe structural damage will not occur to the piers and the aqueduct,and the structural safety of the aqueduct under earthquakes is guaranteed.However,under designed earthquakes,the water-stop of the aqueduct will fail,which cannot guarantee that the aqueduct will maintain the water diversion function after an earthquake.Adding steel dampers can effectively control the deformation of the aqueduct spans,ensuring that the water-stop of the aqueduct will not be damaged under a designed earthquake.However,the water-stop will inevitably be damaged under rare earthquakes,and the deformation control of the aqueduct spans under strong earthquakes still faces challenges.关键词
高墩渡槽/流固耦合/动力分析/减隔震支座/止水失效Key words
high-pier aqueduct/fluid-solid coupling/dynamic analysis/seismic isolation bearing/water-stop failure分类
交通工程引用本文复制引用
邓开来,张烨欣,李智渊,郝明辉,廖文彬..基于流固耦合分析的高墩渡槽止水地震失效分析[J].西南交通大学学报,2025,60(5):1170-1177,8.基金项目
云南省重大科技专项计划(202102AF080001) （202102AF080001）
四川省科技计划(2022JDRC0012,2023YFS0429) （2022JDRC0012,2023YFS0429）
