重载交通下锚拉悬臂式挡土墙受力特性研究

发布时间：2018-01-08 22:28

本文关键词：重载交通下锚拉悬臂式挡土墙受力特性研究　出处：《公路》2015年07期 　论文类型：期刊论文

【摘要】：为研究重载交通下锚拉悬臂式挡土墙的力学响应规律,按照几何相似原则和车轮荷载当量圆换算关系,设计了模型试验,监测并分析了不同等级载荷下锚杆轴力、空间土压力、挡土墙侧向位移的分布特征。研究结果表明:锚拉悬臂式挡土墙在顶部车轮荷载作用下,锚杆轴力及锚杆上部沿轴向竖向土压力在锚固段中间位置荷载集中效应显著;锚杆上部竖向土压力较锚杆两侧及锚杆底部偏大;挡土墙侧向土压力的竖向分布及横向分布都在锚固端位置出现集中现象;挡土墙的侧向位移曲线在锚杆作用位置处出现明显拐点,卸载后,挡土墙的侧向位移回弹量较小。该结论的得出对锚拉悬臂式挡土墙的设计与施工具有一定的参考价值。
[Abstract]:To study the mechanics of heavy traffic Anchor Pull cantilever retaining wall response, according to the geometric similarity conversion principle and round wheel load equivalent model test design, monitoring and analysis of the different levels of load under axial force of bolt, the space distribution characteristics of earth pressure, the lateral displacement of the retaining wall. The results show that: tensile anchor cantilever retaining wall in the top of the wheel load, the axial force of the anchor bolt and the upper part of the vertical earth pressure along the axial direction in the anchorage section middle position load concentration effect is significant; the upper vertical earth pressure anchor and anchor bolt is on both sides of the bottom is too large; vertical distribution and horizontal distribution of the lateral earth pressure of retaining wall there are concentrated phenomenon at the anchor end position; lateral displacement the curve of the retaining wall showed a significant turning point, in the anchor role position after unloading, the lateral displacement of the retaining wall is smaller the springback. The conclusion of cantilever anchor The design and construction of retaining wall have a certain reference value.

【作者单位】：山东大学土建与水利学院;山东省路基安全工程技术研究中心;
【基金】：国家自然科学基金,项目编号51208284;国家自然科学基金,项目编号41372300 山东省科技发展计划,项目编号2013GSF11603
【分类号】：U417.11
【正文快照】： 随着经济的持续快速发展,我国高速公路的建设有了长足的进步。众所周知,高速公路占地面积大、用土量多,而现如今土地供需矛盾尖锐,如何保护耕地和节约集约利用土地成为公路建设中首先考虑的问题,以墙代坡是一种行之有效的方法,故挡土墙越来越多地应用在高速公路建设中。锚拉悬

【共引文献】