首页 | 本学科首页   官方微博 | 高级检索  
     

地连墙换热对其土压力影响的离心模型试验
引用本文:李淑勇,夏才初,朱建龙,程晓辉. 地连墙换热对其土压力影响的离心模型试验[J]. 地下空间与工程学报, 2019, 15(5): 1461-1467
作者姓名:李淑勇  夏才初  朱建龙  程晓辉
作者单位:绍兴文理学院土木工程学院,浙江绍兴,312000;绍兴文理学院土木工程学院,浙江绍兴312000;同济大学土木工程学院,上海200092;同济大学土木工程学院,上海200092;中国电力工程顾问集团华东电力设计院有限公司,上海200063;清华大学土木工程系,北京,100084
基金项目:“十二五”国家科技支撑计划课题(2012BAJ01B02);国家自然科学基金(50878150);清华大学-剑桥大学-麻省理工学院低碳能源大学联盟种子基金(300907001)
摘    要:以地铁车站以及围护结构中常用的地下连续墙作为研究对象,对砂土地基中地下连续墙的热响应进行离心机模型试验,探究在温度变化条件下周围土体压力的变化情况。在50g离心加速场内模拟地埋管换热升温,对模型中的温度和土压力进行了监测,得到了温度和土压力随时间变化的关系曲线,并由此分析得到了在地源热泵系统运行时由于温度的变化对地下连续墙周围土体压力带来的影响。试验结果表明:模型在升温状态下,土压力值有着明显增大的趋势,并且被动土压力的增量明显大于主动土压力的增量。在温差相近的情况下,土压力的增量沿深度方向呈增长的趋势。

关 键 词:地源热泵  离心机模型试验  温度  土压力  地下连续墙  热响应
收稿时间:2019-05-11

Centrifugal Model Test of the Influence on Soil Pressure with Diaphragm Wall Heat Transfer
Li Shuyong,Xia Caichu,Zhu Jianlong,Cheng Xiaohui. Centrifugal Model Test of the Influence on Soil Pressure with Diaphragm Wall Heat Transfer[J]. Chinese Journal of Underground Space and Engineering, 2019, 15(5): 1461-1467
Authors:Li Shuyong  Xia Caichu  Zhu Jianlong  Cheng Xiaohui
Abstract:This paper uses diaphragm wall in the subway station as the study object, and researches on the thermal response of the diaphragm wall in the sand foundation by centrifuge modeling test, The change of surrounding soil pressure under the condition of temperature change is explored. The heat transfer and warming of ground heat exchanger were simulated in 50g centrifugal acceleration field. The temperature and soil pressure in the model were monitored and then the curves of temperature and soil pressure versus time are obtained. Based on the analysis, the influence of temperature on the soil pressure around the diaphragm wall is obtained when the ground source heat pump system is running. The result shows that the model in the heating condition, soil pressure value is significantly increased, incremental of passive soil pressure is significantly greater than the active soil pressure. When the temperature difference is similar, the increment of the soil pressure increases along the depth direction.
Keywords:ground source heat pump  centrifuge model test  temperature  soil pressure  diaphragm wall  thermal response  
本文献已被 万方数据 等数据库收录!
点击此处可从《地下空间与工程学报》浏览原始摘要信息
点击此处可从《地下空间与工程学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号