不同面板形式下竖直加筋土挡墙工作性能研究
Working performance of vertical reinforced earth retaining wall under different panel forms
邓明 1刘勇 2汪磊3
作者信息
- 1. 江西中昌工程咨询监理有限公司,江西 南昌 330013;江西理工大学 土木与测绘工程学院(南昌),江西 南昌 330013
- 2. 内蒙古高速公路集团有限责任公司,内蒙古 呼和浩特 010051
- 3. 江西理工大学 土木与测绘工程学院(南昌),江西 南昌 330013
- 折叠
摘要
为了研究不同面板形式下竖直加筋土挡墙的工作性能及其力学性能的分布规律,利用有限元数值模拟软件Plaxis分别对砌块式与反包式面板竖直加筋土挡墙进行数值建模,获取可靠的挡墙筋材拉力、面板水平位移及潜在破裂面位置等应力应变数据.研究结果表明:砌块式挡墙墙脚及墙顶处的筋材拉力及面板水平位移为最小,在挡墙中部达到最大,沿墙高方向近似呈梯形分布.反包式面板挡墙筋材拉力沿墙高增加方向呈单调递减曲线分布,面板水平位移则沿墙高增加方向呈单调递增曲线分布,两者潜在破裂面形状相似.砌块式挡墙筋材拉力以及面板水平位移整体小于反包式面板挡墙筋材拉力,砌块式挡墙潜在破裂面位置相对于反包式面板挡墙潜在破裂面位置更加靠近面板.因此,相同工况下砌块式挡墙力学性能优于反包式面板挡墙的力学性能.
Abstract
In order to study the working performance and distribution of mechanical properties of vertical rein-forced earth retaining wall under different panel forms,finite element numerical simulation software Plaxis was used to conduct numerical modeling of the block-type and reverse-cladding-type vertical reinforced earth retaining wall,respectively. Reliable stress-strain data such as reinforcement tension,horizontal displacement of the panel,and potential fracture surface location were obtained. The research results showed that the reinforcement tension and the horizontal displacement of the panel at the foot and top of the block-type retaining wall were the minimum,and reached the maximum at the middle of the retaining wall;the distribution along the height of the wall was approximately trapezoidal. The reinforcement tension of the reverse-cladding-type retaining wall presented a monotonically decreasing curve along the increasing direction of wall height,while the horizontal displacement of the panel presented a monotonically increasing curve along the increasing direction of wall height. The reinforcement tension and the horizontal displacement of the panel of the block-type retaining wall were smaller than those of the reverse cladding-type retaining wall. The potential fracture surface of the block-type retaining wall was closer to the panel than that of the reverse cladding-type retaining wall. Therefore,the mechanical properties of the block-type retaining wall are superior to the reverse cladding-type retaining wall under the same working conditions.
关键词
竖直加筋土挡墙/面板形式/力学性能/数值模拟Key words
vertical reinforced earth retaining wall/panel form/mechanical properties/numerical simulation引用本文复制引用
基金项目
江西省教育厅科学技术研究项目(GJJ200865)
高层次人才科研启动项目(jxncbs19002)
出版年
2024
NETL
NSTL
万方数据