塑料排水板在处理海域公路深厚软基中的运用  

Deep Soft Ground Treated with PVD on Sea-wall Highway

作　　者：蔡锐[1] 徐锴[2] 陈永辉[1,3] 胡隆 陈庚[1] 

机构地区：[1]河海大学岩土工程科学研究所,南京210098 [2]南京水利科学研究院,南京210029 [3]河海大学岩土力学与堤坝工程教育部重点实验室,南京210098 [4]温州市瓯江口开发建设投资集团有限公司,温州325026

出　　处：《科学技术与工程》2014年第9期99-104,共6页Science Technology and Engineering

基　　金：浙江省交通运输厅科技计划项目资助(2012H01);江苏省普通高校研究生科研创新计划项目(CXZZ12_0233)资助

摘　　要：通过在采用塑料排水板处理海域公路深厚软基的断面埋设试验仪器，对路基打设塑料排水板前后的沉降进行对比，得出塑料排水板处理海域软基初期3月内沉降达1252mm，约占设计沉降量50％。同时从地表沉降、孔隙水压力、深层水平位移及分层沉降四个方面的监测数据分析，得出长期内最大超静孔隙水压力分布在20-28m处，深层水平向及竖向最大位移均在距地表1～7m内。最后提出塑料排水板处理海域软基的相关理论公式。The test instruments are installed at the typical section of the sea-wall highway, whose deep soft ground is treated with PVD. The settlement data is contrasted before and after the set of plastic drainage, the con- clusion is that the settlement in the first three months is about 1 252 mm,50% of the design settlement. The long- term performance of the effect of the plastic drainage belt is analyzed by surface settlements, pore water pressures, deep horizontal displacements and layered settlements. The maximum excess pore water pressure is between the deep 20 m and 28 m. The maximum deep horizontal displacement and layered settlement is in the deep from 1 m to 7 m. Some theoretical formulas which are useful in the area treated with PVD are provided at last.

关 键 词：塑料排水板 海域公路 深厚软土地基 

分 类 号：TU471.8[建筑科学—结构工程]