垃圾土中樁基靜載荷與光纖現(xiàn)場試驗

打開文本圖片集

摘 要：預制管樁可用于垃圾填埋場等軟土地基處理。為了研究其荷載傳遞規(guī)律，采用現(xiàn)場荷載試驗、樁身光纖光柵應力測試，分析各級荷載下管樁樁側摩阻力及樁端阻力分布特征，給出各段壓縮量隨樁頂荷載的變化規(guī)律。結果表明：本次試驗樁基荷載—沉降曲線均為緩變型，樁下部主要承受正摩阻力。

關鍵詞：樁-垃圾土;光纖;現(xiàn)場試驗

中圖分類號：TU43     文獻標志碼：A     文章編號：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

隨著城市規(guī)模不斷增大，越來越多的建筑物和公路修筑在垃圾填埋場上[1]。（剩余3726字）