影响塑料排水板加固效果因素的探讨

对塑料排水板法加固软粘土地基而言,塑料排水板的固结系数、排水板的间距、处理深度极其井阻与涂抹作用等都直接影响着加固效果.以浙江台金高速公路软土路堤试验断面工程地质条件为例,分别分析影响塑料排水板加固效果的几个主要因素,得出固结系数在设计计算中可以用室内试验的竖向固结系数代替径向固结系数.同时,排水板的间距和深度并不能无限制的减小或加大,而应根据实际工程情况进行合理的取值.

Research on Factors Affecting the Consolidation by Using Prefabricated Drains

For soft clayey foundations consolidated with the prefabricated drains method,coefficiency of consolidation,separation and depth of the prefabricated drains and the effects of well resistance and smear,etc.all directly contribute to consolidation.Taking the engineering geological condition of soft embankment test section in Zhejiang Taijin Highway for example,this paper analyzes factors affecting the consolidation results by using prefabricated drains.Coefficiency of consolidation may use Cv of indoor test to take place of Ch;at the same time,separation and depth of the prefabricated drains should not be reduced or oversized unrestrictedly in the case of the geological conditions.Instead,they should be determined rationally according to practical cases.