塑料排水板堆载预压法影响因素及效果分析  

Study on the influence factors of preloading method combining with plastic drain and its effect analysis

作　　者：邵雪军 Shao Xue-jun(Nantong municipal facilities management bureau Jiangsu Nantong 226000 Chin)

机构地区：[1]南通市市政设施管理处,江苏南通226000

出　　处：《城市建设理论研究（电子版）》2018年第4期165-167,共3页Theoretical Research in Urban Construction

摘　　要：沿海地区城市发展过程中,填海区软弱地基土上的市政基础建设工程越来越多,超载预压排水固结法是这类软土地基处理普遍采用的方法。依托温州某城镇道路工程项目,以软土路基作为研究对象,采用软土蠕变模型,计算模拟塑料排水板打设、分层填筑、堆载预压和卸载的分步实施过程,明晰了塑料排水板和超载预压在软土地基处理中的基本特性。选取路基中心处沉降值和路基坡脚的水平位移作为分析对象,研究超载预压排水固结法中各项参数,如堆载时间、堆载重量、排水板长度、排水板间距等,对预压效果的影响,并提出了合理的控制措施。More and more municipal infrastructures are built on soft soil in reclamation area along with the development of coastal cities. The preloading method combining with plastic drain is generally adopted in foundation treatment for this soft soil. The soft soil subgrades in a city road project in Wenzhou are taken as research object and the soft soil creep model is applied in it. The numerical simulation involves all the implementation steps of preloading method included plastic drain plating, layered filling, preloading and unloading. As a result, the features of plastic drain and preloading in this method are clear. Based on the analysis on settlement in subgrade center and horizontal displacement at the slope foot, the treatment effects of preloading method parameters such as preloading time, load, plastic drain length and spacing are studied and the reasonable control measures in site are carried out.

关 键 词：软土路基 超载预压法 塑料排水板 路基沉降 预压效果 

分 类 号：TU471.8[建筑科学—结构工程]