摘要
对静动力排水固结法加固超软土地基而,塑料排水板的布置方式、排水板的间距、插入深度及其井阻与涂抹作用等都直接影响加固效果。以广州某化工品仓储区工程为例,分析影响塑料排水板加固效果的排水板间距、插板深度等主要因素,进步验证了在同种塑料排水板布置方式和相同排水板间距下,不同插板深度,固结效果不样;在不存在底部透水层的条件下,排水板的深度越大,加固效果越好;冲击荷载作用后还存在持续的残余力作用,在残余力与排水体系共同作用下孔隙水压力逐渐消散,土压力和沉降量得以持续增长。
For the static-dynamic drainage consolidation method of super soft soil foundation, the arrangement of plastic drainage board,drainage board spacing,insertion depth as well as resistance and smear effect directly affect the reinforcement effect. Taking the engineering geological conditions of a chemical warehouse in Guangzhou as an example,the main factors of the effect of plastic drainage plate reinforcement are analyzed including drainage plate spacing,flashboard depth. The deeper of the drainage plate,relevant conclusions are that in the same plastic drainage plate arrangement and the same drainage plate spacing,different depth of the plate,the consolidation effect is not the same; the better of the reinforcement effect in the condition of no bottom permeable layer; and there is residual stress in the soft soil after the impact loading,the pore water pressure dissipates gradually under the action of the residual stress and drainage system,and soil effect- pressure and settlement keep to sustained growth.
出处
《施工技术》
CAS
北大核心
2014年第4期97-100,共4页
Construction Technology
基金
国家自然科学基金资助项目(51178122)
关键词
地基基础
静动力排水固结法
塑料排水板
排水体系
foundations
static-dynamic drainage consolidation method
plastic drainage board
drainage
