文献类型：期刊文献

英文题名：Probabilistic investigations on the watertightness of jet-grouted ground considering geometric imperfections in diameter and position

作者：Pan, Yutao[1];Liu, Yong[1];Hu, Jun[2];Sun, Miaomiao[3];Wang, Wei[4]

机构：[1]Natl Univ Singapore, Dept Civil & Environm Engn, 1 Engn Dr 2, Singapore 119576, Singapore;[2]Hainan Univ, Coll Civil Engn & Architecture, Haikou 570228, Hainan, Peoples R China;[3]Zhejiang Univ City Coll, Dept Civil Engn, 51 Huzhou St, Hangzhou 310015, Zhejiang, Peoples R China;[4]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China

年份：2017

卷号：54

期号：10

起止页码：1447

外文期刊名：CANADIAN GEOTECHNICAL JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000412171900007)、、EI(收录号：20174104248631)、Scopus(收录号：2-s2.0-85030529402)、WOS

基金：This research is supported by the Key R & D Plan Science and Technology Cooperation Programme of Hainan Province, P. R. China (ZDYF2016226), the Sci-Tech Program of Hainan Province, P. R. China (ZDXM2015117), and the National Science Foundation of China (Grant No. 51408549).

语种：英文

外文关键词：jet-grouting; watertightness; probability; Monte Carlo simulation; random field

外文摘要：The effect of geometric imperfections in both diameter and position of jet-grouted columns on the watertightness of an underground cement-treated slab is investigated in this study. A three-dimensional discretized algorithm is proposed to facilitate the detection and measurement of untreated zones that penetrate the treated slab. The normalized flow rate of a cement-treated slab is then evaluated by calculating the harmonic average area of the penetrated defect. Statistical evaluation of the gross flow rate through the penetrated defects is carried out via Monte Carlo simulations. The results show that a more economic design is obtainable if intracolumn variation of diameter is considered or multi-shaft jet-grouting is used. Based on the statistical results, a reliability-based design method is proposed for designers to strike a balance among various design parameters, including slab thickness, depth, column diameter, and column spacing.