河南城建学院学报2023，Vol.32Issue(6)：9-15,21,8.DOI:10.14140/j.cnki.hncjxb.2023.06.002
蓄滞洪区老堤加培堤防地震响应数值模拟分析
Numerical simulation analysis of seismic response of old embankment with reinforced embankment in flood storage and detention area
摘要
Abstract
The embankment foundation of the flood detention area is mostly composed of weak river and lake sediment layers.The junction between the old and new embankments of the old embankment with reinforced embankment is a typical weak area,which is prone to cracking under seismic action,threatening the seepage stability of the embankment.In order to analyze the seismic response characteristics of the old embankment with reinforced embankment under seismic action,a three-dimensional finite element numerical model was es-tablished based on the old embankment with reinforced embankment project in Huayang River flood detention area.The dynamic time history analysis of the embankment was carried out by EL-Centro seismic wave excita-tion,and the seismic response characteristics such as acceleration,displacement,and differential deformation of the old embankment with reinforced embankment under different intensity seismic actions were studied.The re-sults show that the acceleration response of the embankment foundation and body under seismic action gradual-ly increases from bottom to top,and there is a significant acceleration amplification effect in the embankment structure.The old and new embankment tops have differential settlement issues under seismic action,and the junction between the old and new embankments is prone to residual deformation under seismic action.It is rec-ommended to strengthen the weak positions of the junction between the old and new embankments through re-inforcing the old embankment with reinforced embankment.关键词
老堤加培堤防/地震响应/蓄滞洪区/新老堤接合面/数值模拟Key words
old embankment with reinforced embankment/seismic response/flood storage and detention area/joint surface of new and old embankments/numerical simulation分类
建筑与水利引用本文复制引用
黄万江,王汉武,任佳丽..蓄滞洪区老堤加培堤防地震响应数值模拟分析[J].河南城建学院学报,2023,32(6):9-15,21,8.基金项目
浙江省水利厅科技计划项目(RA2211) （RA2211）
