云南省气象局办公楼工程地质条件评价与基础论术.doc

最主要的一点是不能写成勘察报告的格式， 吉林大学本科生毕业论文(设计) 云南省气象局办公楼 工程地质条件评价与基础论证 The Geo-engineering Conditions Evaluation and Foundation Demonstration of Meteorologic Bureau in Yunnan Province 学生姓名 专 业 班级及学号 指导教师 论文完成时间 摘 要 本论文通过收集云南省气象局办公楼的岩土工程勘察资料，了解到该拟建工程的工程地质概况，气候条件，地形地貌条件，从而对场地的工程地质条件进行比较全面的分析，阐明了地基土层的性质、分布规律、成因类型，各地层的物理力学性质指标，地下水的类型等。通过对场地土类型、地震效应、砂土液化、地下水的腐蚀性等分析，评价其对工程建设的影响程度。 通过对拟建场地工程地质条件的分析和工程地质问题的论证，并且经过基础方案的论证，给出了建议性的基础类型和设计，建议采用桩基础。对桩型的选择，持力层选择，桩的施工工艺，单桩承载力等进行了分析计算，对桩数的多少等做了初步计算。通过几种桩型的对比，最终选择使用沉管灌注桩，并对基坑开挖和降水方法，提出了一些建议。 关键词：工程地质；地震效应；砂土液化；桩基础；单桩承载力  ABSTRACT In this paper, through the collection of the Yunnan Provincial Meteorological Bureau office in geotechnical engineering investigation, understanding that the proposed project works geology, climate, topography conditions,doing more comprehensive analysis to the engineering geological conditions. Clarifying the The nature of the foundation layer, the distribution rule ,the genetic types, various formation physical and mechanical properties indexes, ground water type and so on. Based on soil type, seismic effect, soil liquefaction, such as corrosion of the groundwater, the construction of its evaluation of the impact. Through the analysis of engineering geology conditions and the demonstration of engineering geology problems of the proposed project, I offer foundation types and design, suggest using pile foundation. Pile foundation is one of the forms of deep foundation. It can accommodate all kind of engineering geological situations, engineering requests and load situations well. In the last half century , accompanied with the rapidly increasing of high-rise buildings, pile-foundations was used more and more extensive. The study of pile-foundation has been prompted greatly in many directions to catch up the needs of the city architecture. This paper has carried out the analysis about pile choice ,bearing stratum choice, pile carrying capacity and done a preliminary on the numbe