盘锦地区地基物理力学指标相关性分析.pdf

沈阳建筑大学
硕士学位论文
盘锦地区地基物理力学指标相关性分析
姓名:史健
申请学位级别:硕士
专业:道路与铁道工程
指导教师:赵俭斌
2007-01-15
硕士研究生学位论文摘要 I
摘要
盘锦地区地基土中含有大量的软土,软土作为一种特殊性土,区域性非常强。对辽宁
的区域性软土进行充分研究,掌握其指标的特性,合理利用,必将为工程建设节约大量资
金,产生巨大的经济和社会效益。
随着国家标准《建筑地基基础设计规范》GB5007— 2002及《岩土工程勘察规范》GB5021
— 2002 的实施,原 89 规范中的地基承载力表被取消,并将承载力基本值、标准值及设计
值等名词统一为承载力特征值,而且改变了以往只注重地基承载力而忽视地基变形的局
面。这就要求在国家规范的基础上,各地要依据岩土工程区域性特点,结合本地区的实际,
编制地区性规范,以指导工程实践。正是基于此,辽宁省组织专家编制了地方标准《建筑
地基基础技术规范》。本文的试验资料来源于编制《建筑地基基础技术规范》时所用的资
料。本文是对这些资料的进一步研究。
本文通过资料的收集,概括出盘锦地区地质特点,并对盘锦地基土的主要物理力学指
标进行统计分析,建立了各指标的相关关系,得到了盘锦地区物理力学指标的有关公式;
分析了影响地基土承载力大小的各种因素,在室内试验中可优先利用这些参数来确定承载
力大小;通过对螺旋板载荷试验确定的盘锦地区地基承载力特征值进行了分析后,认为利
用分析平板载荷试验的理论与方法,分析螺旋板载荷试验不太适合。应该发展出一套适合
螺旋板载荷试验的试验规程和理论。

关键词:软土地基;物理力学指标;螺旋板载荷试验;承载力特征值
II ABSTRACT 硕士研究生学位论文
ABSTRACT
As a special soil, soft soil has strongly regionality. Studying of the soft soil fully in Liaoning
district, grasping the characteristics of the indexes, using them rationally, these must save much
construction capital and produce huge social and economic benefit.
The national code, <Code for design of building foundation>(GB5007--2002) and <Code
for investigation of geotenical engineering> (GB5021--2002) were used. The ground capacity
form of the 89-year’s code was canceled. The nouns, capacity basic value, characteristic value
and design value were called feature value unified. The situation, which pay attention to the
ground capacity and ignore the ground deformation in the past, was changed. This asked for
basing on the national code, all parts should base on the regional characters of geotenical
engineering, combining with regional realty, piling the regional code to guide the
engineering practices. So specialists anized piling in the regional code < Code for
design of building foundation >in Liaoning province. The dates in this e from
materials which were used in the regional code < Code for design of building foundation >in
Liaoning province. This paper reached d