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

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.