连云港软土的特征及对工程建设的影响  

Characteristics of Soft Soil in Lianyungang and the Influences on Engineering Construction

作　　者：于少舟 李明东[2] YU Shao-zhou1, LI Ming-dong2(1. Investigation ＆ Estimation Co. , Ltd, Lianyungang Institute of Architectural Design ＆ Research Co. , Ltd,Lianyungang 222006, China;2. Huaihai Institute of Technology, Lianyungang 222005, Chin)

机构地区：[1]连云港市建院勘察检测有限公司,江苏连云港222006 [2]淮海工学院,江苏连云港222005

出　　处：《南京工程学院学报（自然科学版）》2018年第1期5-10,共6页Journal of Nanjing Institute of Technology(Natural Science Edition)

基　　金：国家自然科学基金项目(51609093);江苏省教育厅基金项目(16KJB560002)

摘　　要：软土的特征对工程建设有很重要的影响.连云港分布有大量的软土,具有流变性、触变性、高含水量及低透水性的基本特征;软土试验指标的重要性在基坑工程中非常突出,在工程中需要特别注意软土的次固结及负摩擦力特性,同时也要考虑试验指标、预固结以及回弹模量问题;结合连云港市发生的几起工程事故原因分析可知,软土特征对打桩及挖填方工程影响很大,在以后的工作中需要注意软土特性,防止类似事故发生.The characteristics of soft soil have an important influence on engineering construction. Widely distributed, soft soil in Lianyungang is characterized by rheology, thixotropy, high water content and low permeability; special attention should be paid to secondary consolidation and negative frictional force characteristics of soft soil, because test index of soft soil is of great importance to the foundation pit engineering. Experimental indexes, pre consolidation and modulus of resilience should also be taken into account. A number of engineering accidents happened in Lianyungang City indicate that characteristics of soft soil exert significant impact on pile driving engineering and excavation and filling engineering. Therefore, it is essential to take account of such characteristics in order to prevent similar accidents.

关 键 词：软土 物理力学性质 次固结 负摩擦 预固结 回弹模量 

分 类 号：TU471.8[建筑科学—结构工程]