Karst Features and Optimization of Karst Foundation Treatment in Luodi-Xinhua Expressway
详细信息
- 责任者：Xiao Wuquan (College of Civil Engineering ; Central South University ; Changsha 410075 ; China)
- 刊名：Carsologica Sinica
- 出版年：2013
- 卷期：32(2)
- 关键词：岩溶塌陷 ; karst collapse ; 地基加固 ; foundation stabilization ; 湖南 ; Hunan Province
- 页码：p.161-166
- 图表：2 illus., 1 table, 18 refs.
- 分类号：1702
- issnNo：ISSN1001-4810
- isbnNo：CN45-1157/P
摘要
Karst is developed in Luodi-Xinhua Expressway.In order to make the construction of expressway economically and securely,the karst subgrade is necessary to be treated.Firstly,through study and analysis on the factors affecting the foundation treatment,a foundation treatment scheme with multiple attribute and fuzzy property is optimized by means of multi-objective decision making fuzzy set theory and analytical hierarchy process.Secondly,based on the engineering geological conditions and the reinforcement effect as well as engineering cost,three schemes of karst foundation treatment are compared,including static pressure grouting,tube sinking compacted gravel piles and dynamic compaction with reinforced concrete continuous plate.The results show that the dynamic compaction with reinforced concrete continuous plate is the most optimal scheme which is of the highest degree of membership to excellence (up to 0.86),the lowest cost(only 13.5 million yuan) and good reinforcement effect.
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