灰土地基膨胀机理试验研究  

Experimental study on expansion mechanism of lime soil foundation

作　　者：李小伟 彭丽娟 张森安 龙照 何腊平 Li Xiaowei;Peng Lijuan;Zhang Sen’an;Long Zhao;He Laping(Gansu CSCEC Municipal Engineering Investgation and Design Institute Co.,Lanzhou 730000,China;CSCEC AECOM Consultants Co.,Lanzhou 730000,China)

机构地区：[1]甘肃中建市政工程勘察设计研究院有限公司,甘肃兰州730000 [2]中建市政工程西北设计研究院有限公司,甘肃兰州730000

出　　处：《山西建筑》2022年第4期89-93,共5页Shanxi Architecture

基　　金：甘肃省住房和城乡建设厅科研项目“市政小尺寸深基坑土压力计算及支护结构受力与变形研究”(JK2019-01)。

摘　　要：以兰州文溯阁《四库全书》藏书馆场地地坪和道路鼓胀为例,在对地基土现场观察分析的基础上,通过地基土土常规试验、地基土易溶盐测试、地基土膨胀性试验等一系列手段,分析场地灰土地基膨胀机理。实验结果表明,影响灰土地基膨胀的主要因素包括灰土层垫层厚度、灰土中水的质量分数及土体内各矿物质成分的质量分数等方面。In this paper,taking the floor and road inflation of the Lanzhou Wensuge Sikuquanshu Library as an example,on the basis of field observation and analysis of foundation soil,through a series of methods,such as routine test of foundation soil,contrast test of compaction degree of foundation soil,test of soluble salt of foundation soil,test of swelling property of foundation soil and analysis of X-ray diffraction composition of foundation soil,the expansion mechanism of lime soil foundation is analyzed.The experimental results show that the main factors affecting the expansion of lime soil foundation include the thickness of lime soil cushion,the moisture content of lime soil and the content of mineral elements in the soil.

关 键 词：灰土地基 膨胀率 易溶盐含量 

分 类 号：TU443[建筑科学—岩土工程]