Model Test on Frozen Wall Development Process of Multi-ring Thin-walled Composite Cylinder
张浩① ZHANG Hao；张林① ZHANG Lin；袁杰② YUAN Jie；张步俊① ZHANG Bu-jun
（①中煤第五建设有限公司第三工程处，徐州 221140；②中国矿业大学力学与土木工程学院，徐州 221116）
（①The Third Engineering Department，China Coal Fifth Construction Co.，Ltd.，Xuzhou 221140，China；
②School of Mechanics and Civil Engineering，China University of Mining and Technology，Xuzhou 221116，China）
摘要： 多圈薄壁组合筒是一种新型冻结壁结构，通过有限元软件建立该结构温度场模型，研究了地温、含水率、盐水温度等单因素对冻结壁厚度的影响规律。通过研究表明在三圈组合筒冻结形式下：①土中的冻结壁厚度随着初始地温、盐水温度、土体含水率的升高而减小。②建立的冻结工程模型中当地温15℃以下，土体含水率25%以下时对冻结壁的厚度发展影响更明显，经济且合理的盐水温度为-26℃。
Abstract: Multi-ring thin-walled composite cylinder is a new type of frozen wall structure. The temperature field model of the structure was established by using finite element software, and the influence law of single factors such as ground temperature, water content and brine temperature on frozen wall thickness was studied. The results show that: ①The thickness of frozen wall in soil decreases with the increase of initial ground temperature, brine temperature and water content of soil. ②In the established freezing engineering model, when the local temperature is below 15℃ and the soil moisture content is below 25%, the influence on the thickness development of the frozen wall is more obvious, and the economic and reasonable salt water temperature is -26℃.
关键词： 深大基坑；组合筒；温度场；冻结壁厚度
Key words: deep and large foundation pit；composite cylinder；temperature field；frozen wall thickness
中图分类号：P642 文献标识码：A 文章编号：1006-4311（2022）23-123-03
DOI:10.3969/j.issn.1006-4311.2022.23.040.
文章出处：张浩,张林,袁杰,等. 多圈薄壁组合筒冻结壁发展过程模型试验[J]. 价值工程,2022,41(23):123-125.
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