文档介绍：成人高等教育毕业设计(论文)
题目:软土路基加固与监测技术研究
学生姓名: 函授站点:
学号:043152000 专业名称:交通工程
学习层次:本科学习形式:函授
指导教师:× × × 审核签字: × ×
二○一三年五月
摘要
所谓软土,是指强度低,压缩性较高的软弱土层。多数含有一定的有机物质。由于软土强度低,沉隐量大,往往给道路工程带来很大的危害,如处理不当,会给公路的施工和使用造成很大影响。软土根据特征,可划分为:软粘性土、淤泥质土、淤泥、泥炭质土及泥炭五种类型。路基中常见的软土,一般是指处于软朔或者流朔状态下的粘性土。其特点是天然含水量大、孔隙比大、压缩系数高、强度低,并具有蠕变性、触变性等特殊的工程地质性质,工程地质条件较差。选用软土作为路基应用,必须提采取出切实可行的技术措施。
一般软基加固方法有:表层处理法、置换法、加载法、竖向排水法等。
一般监测方法有:高程测量、表面沉降监测、分层沉降监测、孔隙水压力监测、静力触深、边桩移位监测、水位监测、十字板剪切、沙土密实度等。
关键词:软土地基,加固方法,监测方法
Abstract
The so-called soft soil, refers to the low strength, pression of soft soil. Most contain anic substances. Due to the soft soil strength low, heavy hidden amount is large, often to road engineering brings very great harm, if processing is undeserved, will give the highway construction and the use of great influence. According to the characteristics of soft soil, which can be divided into: soft clay, silt, silty soil, peat soil and peat five types. Soft soil roadbed mon, generally refers to in the soft moon or flow back under the condition of cohesive soil. Its characteristic is the natural water content, void ratio, pressibility, low strength and high, with the creep, thixotropy and other special engineering geological characteristics, poor engineering geological conditions. Selection of soft soil as roadbed application, have to take the feasible measures.
General soft base reinforcement methods are: surface treatment method, displacement method, loading method, vertical drain method.
General monitoring methods are: height measurement, surface subsidence monitoring, settlement monitoring, monitoring of pore water pressure, static contact deep, pile side shift monitoring, level monitoring, vane shear, sandy pactness.
Key words: soft soil; reinforcement method; monitoring method.
目录
摘要 1
ABSTRACT 2
1 绪论 4
5
6
河流相沉积环境 6
湖相和冰湖相环境 7
国内外研究现状 7
软土地基加固处理的现状 8
软土地基处理的心技术 8
高压水切割消瘀 8
薄层轮加法填筑路堤 9
CFG桩 9