三向土工格栅加筋桩承式路堤现场测试研究  

On-site Test of Triaxial Geogrid Reinforced Pile Supported Embankment

作　　者：李亚东 彭龙帆 李纪昕 徐小洋[1] 刘志红[1] LI Yadong;PENG Longfan;LI Jixin;XU Xiaoyang;LIU Zhihong(China Construction Second Engineering Bureau Ltd.East China Company,Shanghai 200135,China)

机构地区：[1]中国建筑第二工程局有限公司华东公司,上海200135

出　　处：《建筑施工》2022年第8期1923-1926,共4页Building Construction

基　　金：中国建筑集团有限公司科研项目课题(CSCEC-2019-Z-29)。

摘　　要：基于武汉智能汽车测试场赛道的桩承式路堤进行了2个区域的现场测试,对桩帽和桩间土的压力与沉降这2项指标进行监测,并研究三向土工格栅的加固效果。测试结果表明,随着路堤外附加荷载的增加,土拱对桩帽的荷载传递作用显著,土工格栅不仅能改善土拱效应,还能有效减小桩帽与地表之间的差异沉降。Based on the pile-supported embankment of the racing track of Wuhan intelligent automobile test field, field tests were carried out in two areas to monitor the pressure and settlement of the pile cap and the soil between piles, and to study the reinforcement effect of the triaxial geogrid. The pressure and settlement of pile cap and soil between piles are monitored, and the reinforcement effect of triaxial geogrid is studied. The test results show that with the increase of the additional load outside the embankment, the load transfer effect of the soil arch on the pile cap is significant. The geogrid can not only improve the soil arch effect, but also effectively reduce the differential settlement between the pile cap and the ground surface.

关 键 词：桩承式加筋路堤 现场试验 土拱效应 应力集中比 差异沉降 

分 类 号：TU99[建筑科学—市政工程]