土体参数对高填方公路拱涵受力特性的影响研究  

Study on the Influence of Soil Parameters on the Stress Characteristics of High Fill Highway Arch Culvert

作　　者：朱建明 ZHU Jianming(China Railway 11th Bureau Group Second Engineering Co.,Ltd.,Shiyan,Hubei 442000,China)

机构地区：[1]中铁十一局集团第二工程有限公司,湖北十堰442000

出　　处：《施工技术（中英文）》2024年第21期114-118,共5页Construction Technology

基　　金：中铁十一局集团科研课题。

摘　　要：为研究不同土体参数条件下高填方公路拱涵受力特性,依托萍莲高速公路工程,通过数值模拟计算,分析不同地基土、上填土模量对拱涵周围土压力分布的影响及拱涵环向应力分布规律。研究结果表明,随着地基土模量的增大,涵顶土压力和涵侧土压力基本逐渐减小,涵洞基底反力逐渐增大,地基土模量的增大有利于拱涵结构的稳定;随着上填土模量的增大,涵顶土压力、涵洞基底反力及涵侧土压力基本逐渐减小,上填土模量的增大可减小拱涵结构受力;上填土模量对拱圈应力无明显影响。在拱涵施工过程中,建议地基土和上填土采用模量大的岩土体。In order to study the stress characteristics of high fill highway arch culverts under different soil parameter conditions,based on the Pinglian Expressway project,numerical simulation calculations were carried out to analyze the influence of different foundation soil and filling soil modulus on the distribution of soil pressure around the arch culvert and the distribution law of circumferential stress of the arch culvert.The research results show that as the modulus of the foundation soil increases,the soil pressure on the top and sides of the arch culvert gradually decreases,and the reaction force on the arch culvert base gradually increases.The increase in the modulus of the foundation soil is beneficial for the stability of the arch culvert structure.As the modulus of the filling soil increases,the soil pressure on the top and sides of the arch culvert,the reaction force on the arch culvert,and the soil pressure on the sides of the arch culvert gradually decrease.The increase in the modulus of the filling soil can reduce the stress on the arch culvert structure.The modulus of the filling soil has no significant effect on the stress of the arch ring.During the construction of arch culverts,it is recommended to use rock and soil with high modulus for the foundation soil and filling soil.

关 键 词：公路 拱涵 土压力 受力特性 数值模拟 

分 类 号：U449[建筑科学—桥梁与隧道工程]