|本期目录/Table of Contents|

[1]周茗如,陈志超,罗小博,等.湿陷性黄土中水泥浆液注浆加固机理[J].建筑科学与工程学报,2017,34(06):65-70.
 ZHOU Ming-ru,CHEN Zhi-chao,LUO Xiao-bo,et al.Reinforcement Mechanism of Cement Slurry Grouting in Collapsible Loess[J].Journal of Architecture and Civil Engineering,2017,34(06):65-70.
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湿陷性黄土中水泥浆液注浆加固机理(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
34卷
期数:
2017年06期
页码:
65-70
栏目:
出版日期:
2017-11-30

文章信息/Info

Title:
Reinforcement Mechanism of Cement Slurry Grouting in Collapsible Loess
作者:
周茗如陈志超罗小博周光康路承功
兰州理工大学甘肃省土木工程防灾减灾重点实验室
Author(s):
ZHOU Ming-ru CHEN Zhi-chao LUO Xiao-bo ZHOU Guang-kang LU Cheng-gong
Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology
关键词:
湿陷性黄土力学特性加固机理注浆水泥浆液劈裂
Keywords:
collapsible loess mechanical property reinforcement mechanism grouting cement slurry separation
分类号:
-
DOI:
-
文献标志码:
A
摘要:
通过分析湿陷性黄土的组成结构、湿陷机理、力学性能,研究了外界荷载作用下湿陷性黄土的变形及破坏机理;在湿陷黄土中做原位水泥浆液注浆加固试验,分析了注浆过程中不同时间段两者之间的相互作用;对注浆后土体纹理结构以及变形进行分析,研究了水泥浆液在湿陷性黄土中的加固机理;采用弹性力学和断裂力学进行理论计算,研究了水泥浆液与土体之间在注浆过程中的相互作用。结果表明:水泥浆液注浆对湿陷性黄土能起到有效的加固作用;湿陷性黄土注浆过程中水泥浆液造成湿陷量极小,并在压力作用下能够迅速对湿陷进行补偿;水泥浆液在黄土中的加固机理包括填充注浆、劈裂注浆、压密注浆,控制注浆压力能有效实现在湿陷性黄土中的压密注浆、劈裂注浆。
Abstract:
By analyzing the structure composition, collapsibility mechanism and mechanical properties of collapsible loess, the deformation and failure mechanism of collapsible loess under external loads were studied. The in-situ cement slurry grouting reinforcement test was carried out in collapsible loess, and the interaction during grouting processes at different time was analyzed. The consolidation mechanism of cement slurry in collapsible loess was studied by analyzing the texture and deformation of soil after grouting. The interaction between cement slurry and soil during grouting was studied by means of elastic mechanics and fracture mechanics. The results show that cement slurry grouting can effectively reinforce collapsible loess. During the grouting process of collapsible loess, the collapsibility of slurry is very small, and the collapsibility can be compensated quickly under the action of pressure. The reinforcement mechanism of cement slurry in loess includes filling grouting, splitting grouting and compaction grouting, and controlling grouting pressure can effectively realize compaction and splitting grouting in collapsible loess.

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备注/Memo

备注/Memo:
更新日期/Last Update: 2017-11-30