Page 65 - 水利学报2021年第52卷第1期

Method for reducing self-weight collapsibility of loess using
the replacement of lightweight soil

1，2 1 1 1 3 4
MI Wenjing ，ZHANG Aijun ，REN Wenyuan ，YANG Tao ，HUANG Miansong ，LIU Hongtai
（1. College of Water Resources and Architectural Engineering Northwest A&F University，Yangling 712100，China；
2. College of Urban， Rural Planning and Architectural Engineering. Shangluo University，Shangluo 726000，China；
3. Beijing Capital Co.，Ltd，Beijing 100044，China；
4. Machine Industry Investigation Design Institute Co.，Ltd. ，Xi’an 712100，China）

Abstract： There is a technical contradiction between the requirement of road surface water permeability
and loess collapsibility in the construction of sponge city in collapsible loess area. The existing method for
eliminating the loess collapsibility cannot meet the requirements of linear projects with small work amount
and allowing rainwater infiltration. Based on the principle of the mutual effect of water immersion and over⁃
lying pressure on loess collapsibility， in the case of inevitable water immersion， a new method of founda⁃
tion treatment is proposed to use lightweight soil to replace the weight loss and reduce the overburden pres⁃
sure so as to reduce the collapsibility of the pedestrian and non-motor vehicle road subgrade. The indoor
collapsibility test and replacement calculation are carried out， and the treatment effect is verified by a
multi-stratigraphic centrifugal model test. The research indicates that the site self-weight collapsibility was
reduced by 22.73% via the replacement calculation of the indoor collapsibility test after the replacement by
1.5m， and the self-weight collapsibility obtained by the centrifugal model test was reduced by 23.04% ，
with the difference of 0.31% . Both methods prove that the lightweight soil weight loss replacement method
can effectively reduce the site collapsibility. When the level of collapsibility is level Ⅱ，and the soil layer
distribution in shallow，this method can eliminate the collapsibility effectively. In addition，this method has
the advantages of simple operation，suitability for linear projects such as permeable roads and allow rainwa⁃
ter infiltration
Keywords：self-weight collapsibility of loess；lightweight soil；centrifugal model test；replacement

（责任编辑：耿庆斋）

2020 年优秀审稿专家表彰名单

2020 年，在审稿专家、编委及广大作者的共同努力下，《水利学报》的论文学术水平进
一步提升。全年共有 407 位专家参与《水利学报》的审稿，为弘扬他们严谨求实的作风、认真
负责的态度及甘于奉献的精神，编辑部综合考虑审稿专家的审稿数量、审稿质量和审稿时
效，评选出 30 位专家为 2020 年度《水利学报》优秀审稿专家。名单如下（按姓名笔画排序）：

王立成 王福军 介玉新 左其亭 冯 平 刘春蓁
刘晓燕 杨开林 束龙仓 肖业祥 吴保生 吴梦喜
吴智敏 邹德高 沈振中 张玉军 陈 进 陈森林
金菊良 郑 源 钟平安 姚文艺 贾仰文 贾绍凤
徐宗学 黄大鹏 梁忠民 蒋云钟 舒安平 解建仓

《水利学报》编辑部

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