粉喷桩复合地基桩土应力比试验研究
摘要:通过分析长江下游某高速公路粉喷桩处理路基段载荷试验和路堤填筑期间分别测试的桩与桩间土两者的应力变化,发现虽然两种试验状况下桩土分担荷载的过程有一定差异,但载荷试验中桩土应力比的最终稳定值与复合地基正常工作时桩土应力比值大致相同,即可通过载荷试验测得的桩土应力比来确定粉喷桩复合地基的设计参数。文中实例说明,该地区粉喷桩复合地基桩土应力比的设计值可取略小于载荷试验中所测桩土应力比。
Abstract:Introducing the study of the stress ratio between pile and soil in a superhighway along the Yangtze River, which has been improved by Dry Jet Mixing pile. The tests for stress ratio between pile and soil of Dry Jet Mixing pile composite foundation, during the bearing experiments and the constructing embankment, are both analyzed. Based on comparing the results of the tests, it is shown that two results are accordant. The final result shows it is feasible for making the stress ratio between pile and soil under the bearing test as the design parameter of the DJM pile composite foundation.
中文标题：
粉喷桩复合地基桩土应力比试验研究
Experimental Study on Stress Ratio between Pile and Soil of DJM Pile Composite Foundation
作者：
朱中卫,方磊
Zhu Zhongwei,Fang Lei
作者简介:朱中卫,1980年生,女,汉族,湖北荆州人,在读硕士。E-mail:goalzzw@126.com
通讯地址：
东南大学岩土所, 江苏南京 210096
TransportationCollegeofSoutheastUniversity,JiangsuNanjing210096China
中图分类号:TU473.1
出版物：岩土工程技术
收稿日期:2004-03-29
网络出版日期:2021-07-08
关键词:载荷试验,桩土应力比,复合地基,柔性荷载
Key words:bearing test,stress ratio between pile and soil,composite foundation,flexible load
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