垃圾土中桩基静载荷与光纤现场试验

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摘 要：预制管桩可用于垃圾填埋场等软土地基处理。为了研究其荷载传递规律，采用现场荷载试验、桩身光纤光栅应力测试，分析各级荷载下管桩桩侧摩阻力及桩端阻力分布特征，给出各段压缩量随桩顶荷载的变化规律。结果表明：本次试验桩基荷载—沉降曲线均为缓变型，桩下部主要承受正摩阻力。

关键词：桩-垃圾土;光纤;现场试验

中图分类号：TU43     文献标志码：A     文章编号：1003-5168（2022）10-0051-04

DOI：10.19968/j.cnki.hnkj.1003-5168.2022.10.011

Pile Foundation Static Load Test and Field Test of Optical Fiber in

Garbage Soil

GUO Fengwei    XIAO Zhaoran    YANG Qingchen

（School of Civil Engineering， Henan University of Technology， Zhengzhou 450001， China）

Abstract：Prefabricated pipe piles can be used for the treatment of soft soil foundations such as landfills. In order to study the load transfer law， the field load test and the fiber grating stress test of the pile body are used to analyze the distribution characteristics of the side friction resistance and the pile end resistance of the pipe pile under various loads，  and the variation law of the compression amount of each section with the pile top load is given. The results show that the load-settlement curves of the pile foundation in this test are all of the slowly-varying type， and the lower part of the pile mainly bears the positive frictional resistance.

Keywords：pile-garbage soil; optical fiber;field test

0 引言

随着城市规模不断增大，越来越多的建筑物和公路修筑在垃圾填埋场上[1]。（剩余3726字）