安全与环境工程2026，Vol.33Issue(3)：123-133,11.DOI:10.13578/j.cnki.issn.1671-1556.20250143
高填方涵洞长期减载效果评价
Long-term load reduction effect evaluation of high fill culverts
摘要
Abstract
As a permanent project,a culvert experiences stress redistribution in the culvert-soil system under long-term backfill loads,resulting in changes in the stress characteristics of the culvert and the load reduction effect.To evaluate the load reduction effect of different load reduction methods,numerical simulations were conducted for 600 months on high fill culverts under four different load reduction methods.The evaluation indicators for the load reduction effect of culverts were divided by the analytic hierarchy process(AHP),and the comprehensive weights of evaluation indicators were obtained by combining the fuzzy matter-element method and the entropy method.Finally,the Euclidean nearness degree at different times under four load reduction methods was calculated,and the overall load reduction effect was quantitatively evaluated.The results are as follows:①The two items with the highest proportion of comprehensive weights are the vertical earth pressure at the center of culverts top and the horizontal earth pressure at the middle of sidewalls;②The overall load reduction effect of the load shedding culvert is the best among the four load reduction methods;③Within the first 36 months after filling,the load reduction effect of the four methods gradually increases,which is better than the load reduction effect at the end of filling;④ The 120th month is the time when the stress state of the culvert structure under the four load reduction methods is the worst.The research results can provide theoretical basis and engineering reference for the long-term load reduction effect evaluation of high fill culverts.关键词
高填方/刚性涵洞/减载措施/长期效应/减载效果评价Key words
high fill/rigid culvert/load reduction method/long-term effect/load reduction effect evaluation分类
资源环境引用本文复制引用
任国卿,任一青,陈保国,代竞翔,丁兰..高填方涵洞长期减载效果评价[J].安全与环境工程,2026,33(3):123-133,11.基金项目
国家自然科学基金项目(52578445、52178370) （52578445、52178370）
