[1]张蕾,李风丽,张瑞,等.一种地基土水平抗力系数的比例系数m的计算方法[J].自然灾害学报,2019,28(04):202-208.[doi:10.13577/j.jnd.2019.0422]
 ZHANG Lei,LI Fengli,ZHANG Rui,et al.A method for calculating proportional coefficient of horizontal resistance coefficient of foundation soil[J].,2019,28(04):202-208.[doi:10.13577/j.jnd.2019.0422]
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一种地基土水平抗力系数的比例系数m的计算方法
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
28
期数:
2019年04期
页码:
202-208
栏目:
出版日期:
2019-08-28

文章信息/Info

Title:
A method for calculating proportional coefficient of horizontal resistance coefficient of foundation soil
作者:
张蕾1 李风丽1 张瑞2 欧明喜1
1. 昆明理工大学 建筑工程学院, 云南 昆明 650500;
2. 昆明理工大学 津桥学院, 云南 昆明 650000
Author(s):
ZHANG Lei1 LI Fengli1 ZHANG Rui2 OU Mingxi1
1. Architectual Engineering College, Kunming University of Science and Technology, Kunming 650500, China;
2. Oxbridge College, Kunming University of Science and Technology, Kunming 650000, China
关键词:
地基土抗力水平抗力系数m模型试验扩底桩
Keywords:
resistance of foundation soilhorizontal resistance coefficientm valuemodel testbelled pile
分类号:
TU443;X43
DOI:
10.13577/j.jnd.2019.0422
摘要:
m值法是我国用于计算桩基水平承载力最广泛的方法,m值的取值直接影响桩侧土抗力的准确性,不同性质的土的m值的取值范围存在很大差别,m值的确定方法具有重要的工程应用价值。提出一种通过模型试验实测数据反算地基土m值的方法。基于扩底桩的横向加载模型试验,以云南省典型红黏土做为试验用地基土,先假定一个m值,计算桩在地面处的水平位移,将该值与室内模型试验实测的水平位移进行比较,若两者数值相差较大,则重新假定m值进行计算,直至计算出的位置值与实测值之间的误差在可接受范围之内,则所取的m值即为该级荷载下所对应的地基反力比例系数。结果表明,该方法可以获得较准确的地基土m值。
Abstract:
The m-value method is the most widely used method for calculating the horizontal bearing capacity of pile foundations. The accuracy of soil resistance of pile side is directly affected by m-value.The range of m-values of soils with different properties is very different. The method of determining the m-value has important engineering application value. A method for inversely calculating the m-value of foundation soil by model test data is proposed. Based on the lateral loading model test of the belled pile, the typical red clay in Yunnan Province was used as the test ground soil. The m-value was assumed first, and the horizontal displacement of the pile at the ground was calculated. The value was compared with the horizontal displacement measured by the indoor model test. For comparison, if the difference between the two values is large, the m-value is re-assumed until the calculated error between the calculated position value and the measured value is within the acceptable range, then the m-value is the proportion coefficient of ground reaction under this load. The results show that the accurate m-value of foundation soil can be obtained by this method.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-10-22;改回日期:2019-03-11。
基金项目:国家自然科学基金项目(51408283);昆明理工大学分析测试基金(2018M20172210044);云南省应用基础研究面上项目(2017FB088)
作者简介:张蕾(1979-),女,讲师,博士,主要从事桩基础及地基处理方面的研究.E-mail:zl5359@163.com
更新日期/Last Update: 1900-01-01