电渗复合地基模型试验研究

doi:10.13722/j.cnki.jrme.2020.0526

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摘要为了研究电压大小、通电时间、排水距离对电渗复合地基法的影响，设计一种电渗复合地基模型试验台，通过控制变量、静载试验、直剪试验以及能耗–电渗固结的计算，对电渗复合地基法进行模型试验以及相应的参数分析。结果表明：与通电时间和排水距离相比，电压参数的变化对电渗复合地基的排水速率和承载力的影响最大；当通电时间超过70 h后，电渗能耗系数呈明显的增大趋势，建议实际工程中的通电时间宜控制在70 h以内；此外，电压和通电时间的增加会急剧增加桩–土界面电阻，进而使得有效电势减小，造成排水速率变慢，影响电渗复合地基承载力的增加。

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	王梁志1
	齐昌广1
	郑金辉1
	崔允亮2
	单艳玲1
	郑荣跃1

关键词 ：基础工程, 电渗复合地基, 模型试验, 软土地基, 电渗能耗

Abstract：In order to study the influence of power supply voltage，power-on time and drainage distance on the effect of electroosmotic composite foundation method improving soft soil，a model test rig was designed for electroosmotic composite foundation. According to the variable control，static loading test，direct shear test，and calculation between energy consumption and electroosmosis consolidation，the model test and corresponding parameter analysis were carried out for electroosmotic composite foundatiosn. The results show that，compared with the power-on time and the drainage distance，the voltage has the greatest impact on the drainage rate and the bearing capacity of the electroosmotic composite foundation，and that the electroosmotic energy consumption coefficient shows a significant increase trend as the power-on time exceeds 70 h and hence，it is recommended that the power-on time in the actual project should be controlled within 70 h. It is also shown that the increase of the voltage and the energization time will sharply increase the pile-soil interface resistance，which in turn reduces the effective potential，decreases the drainage rate and affects the increase of the electro-osmotic composite foundation.

Key words： foundation engineering electroosmotic composite foundation model test soft ground electroosmotic energy consumption

引用本文:

王梁志1，齐昌广1，郑金辉1，崔允亮2，单艳玲1，郑荣跃1. 电渗复合地基模型试验研究[J]. 岩石力学与工程学报, 2020, 39(12): 2557-2569.
WANG Liangzhi1，QI Changguang1，ZHENG Jinhui1，CUI Yunliang2，SHAN Yanling1，ZHENG Rongyue1. Model test study on electroosmotic composite foundations. , 2020, 39(12): 2557-2569.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2020.0526 或 http://rockmech.whrsm.ac.cn/CN/Y2020/V39/I12/2557

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