南通地铁典型土层冻胀特性试验研究  

Experimental study on frost heave characteristics of Nantong subway typical clay

作　　者：姚亚锋[1] 张哲媚 顾凡渝 王伟[1] Yao Yafeng;Zhang Zhemei;Gu Fanyu;Wang Wei(School of Architectual Engineering,Nantong Vocational University,Nantong 226001,China)

机构地区：[1]南通职业大学建筑工程学院,江苏南通226001

出　　处：《山西建筑》2018年第22期57-59,共3页Shanxi Architecture

基　　金：江苏省高等学校大学生创新创业训练计划项目(201711052015Y);南通职业大学自然科学研究项目(16ZK05)

摘　　要：冻土的冻胀特性是地铁隧道的重要资料,在-5℃,-10℃,-15℃下,针对南通地铁典型土层冻结黏土进行冻胀力和冻胀率的试验,获得冻胀程度随时间的变化规律,基于此,利用试验数据对传统冻胀率公式进行优化,改进后的公式运用在具体工程中的计算值能很好的拟合试验值,故能更有效表征南通地区地铁典型土层冻土的冻胀特性,可为南通地铁建设中冻结法隧道建井提供可靠资料。The freezing characteristics of frozen soil is one of the important data of metro tunnel. Under-5 ℃,-10 ℃,-15 ℃,frost heaving force and the rate of frost heave tests have conducted in Nantong subway typical soil frozen clay,getting the rules of frost heave degree changes with the time. Based on this,frost heave rate formula is optimized by using the test data of traditional,and the improved formula can be a very good fitting test values in the project of the specific calculation value,so it can be more effective characterization of the freezing soil properties in nantong subway,thus will provide reliable data about freezing method to built the nantong subway well or construction tunnel.

关 键 词：冻结黏土 冻胀特性 公式优化 

分 类 号：TU411[建筑科学—岩土工程]