预制+现浇组合式面板加筋土挡墙力学特性研究
STUDY ON MECHANICAL PROPERTIES OF REINFORCED SOIL RETAINING WALLS WITH PREFABRICATE AND CAST-IN-SITU COMBINED PANEL
郭栋 1李博 2宋来强 2孙兴波 2李艳凤3
作者信息
- 1. 中铁九局集团有限公司大连分公司,辽宁大连 116019;沈阳建筑大学,沈阳 110168
- 2. 中铁九局集团有限公司大连分公司,辽宁大连 116019
- 3. 沈阳建筑大学,沈阳 110168
- 折叠
摘要
为了分析预制与现浇组合式面板加筋土挡墙在交通荷载下的力学行为和变形特性,研究依托成昆铁路复线挡墙工程,以成昆铁路某段复合式加筋挡土墙结构为研究对象,通过现场实测和数值模拟结合的方式,对加筋土挡墙的力学特性进行了研究,重点分析了面板变形、墙后土压力、基底及墙顶沉降等分布规律.分析结果表明,实际工程中应适当增加挡墙中部筋带数量,减少加筋间距,增大加筋长度,采用短筋和长筋交替布置的方式,可充分发挥筋材的加筋作用,以加强挡墙整体稳定性.
Abstract
In order to study the mechanical behavior and deformation characteristics of prefabricated and cast-in-place composite panel reinforced earth retaining walls under traffic loads,based on the double track retaining wall project of the Chengdu Kunming railway,a composite reinforced earth retaining wall structure of a section of the Chengdu Kunming Railway was taken as the research object.Through on-site measurement and numerical simulation,the mechanical characteristics of the reinforced earth retaining wall were studied,with a focus on analyzing the distribution patterns of panel deformation,soil pressure behind the wall,foundation and wall top settlement.The analysis results indicate that in actual engineering,the number of reinforcement strips in the middle of the retaining wall should be appropriately increased,the spacing between reinforcement bars should be reduced,and the length of reinforcement bars should be increased.The use of alternating short and long reinforcement bars can fully leverage the reinforcement effect of the reinforcement material to strengthen the overall stability of the retaining wall.
关键词
土工格栅/预制+现浇组合式面板加筋土挡墙/现场试验/力学特性Key words
geogrid/reinforced soil retaining walls with prefabricate and cast-in-situ combined panel/field test/mechanical properties引用本文复制引用
基金项目
辽宁省教育厅(LJKZ0589)
国家重点研究与发展计划(2018YFC0809600)
出版年
2024
NETL
NSTL
万方数据