摘要
热排水固结法是处理软土地基的一种新型方法,该法在竖向排水体中增设U型导热管,将导热管内的水预加热并使其在管内循环,实现管-土之间的热交换,从而改变土体的渗透性,加速土体的固结过程,提升地基处理效果。经过分析、总结国内外有关土体"热"方面的研究现状,指出目前研究的不足,对推动热排水固结法的研究有一定的意义;另外,分析了温度因素对地基固结进程及渗透系数的影响规律:温度越高,理想地基的固结度越高,且温差越大,固结度差值越大;温度较高时到达某一固结度所需时间比温度较低时到达同一固结度所需时间少;热排水固结法中温度升高能够有效改善土的渗透性。
The thermal drainage consolidation is a new method of the combined heat treatment of soft soil foundation. Through this method, a U-shaped heat conduction pipe is added in the vertical drainage channels to preheat the water in the heat conducting pipe to a certain temperature and make it circulate in the pipe to achieve heat exchange between the pipe and soil, which results in changing the permeability of soil, accelerating the consolidation speed of soil and enhancing the treatment effect of foundation. This paper summarizes the research status of soil thermal effect and thermal consolidation at home and abroad, points out the deficiency of the current research, and puts forward the suggestion of applying thermal drainage consolidation to soft foundation treatment, which is of certain significance for promoting the research of thermal drainage consolidation method. Finally, the influence of temperature on the process of foundation consolidation and permeability coefficient is analyzed. The results show that the higher the temperature, the higher the degree of consolidation of the ideal foundation, and the greater the temperature difference, the greater the degree of consolidation difference. It takes less time to reach a certain degree of consolidation when the temperature is higher than when the temperature is lower. The permeability of soil can be improved by increasing the temperature in the thermal drainage consolidation method.
作者
李俊虎
叶梅书
陶海冰
张卫民
汪绍洪
朱锋盼
盛昌
LI Junhu;YE Meishu;TAO Haibing;ZHANG Weimin;WANG Shaohong;ZHU Fengpan;SHENG Chang(Jinhua Polytechnic,Jinhua 321007,China;Jinhua Fanghao Commodity Concrete Co. LTD,Jinhua 321017,China;Fangyuan Construction Group Co.,Ltd.,Taizhou 318000,China)
出处
《金华职业技术学院学报》
2019年第3期68-72,共5页
Journal of Jinhua Polytechnic
基金
2018年金华市科协学术研究项目(2018-17)
关键词
软基处理
热排水固结
热交换
热效应
soft foundation treatment
consolidation of thermal drainage
heat exchange
thermal effect
作者简介
李俊虎(1986-),男,安徽砀山人,金华职业技术学院建筑工程学院讲师,博士,研究方向为软基处理、软黏土微观结构。
