天海誉天下21#楼岩土工程勘察及地基处理.doc

摘要 本篇毕业设计通过对天海誉天下项目的岩土工程勘察报告进行整理，详细介绍了岩土工程勘察的步骤、方法和原理，并对可采取的基础方案进行论证。 本设计是对我们所学过的专业课程和辅助课程的综合性审核，也是最为全面的一次专业考试，是我们将来所要从事的专业工作的一次演练。根据场地所在的区域概况和工程地质条件，经过详细的岩土工程勘察，通过土工试验、原位测试等手段得到该场地地基土的各种物理力学指标，利用这些物理力学指标并根据规范要求计算了各层土的力学指标值，对地基进行综合评价。由于拟建建筑物的地基土承载力小于基底压力，不能满足设计要求，所以需要进行地基处理。 依据场地地基土工程地质性质，结合上部结构特点对场地的工程地质条件、地基稳定性、地震效应、场地类别进行了分析判断。并对天然地基进行评价，选出本场地地基处理的最佳方案为CFG桩复合地基法。经过计算验证，CFG满足设计要求。 关键词：岩土工程勘察 地基处理 复合地基 CFG桩 Abstract This graduation design in great detail with the rock soil engineering of the piano mansion to investigate to report to carry on a sorting to the Tianhaiyutianxia item, introduced rock soil in detail the engineering investigate of step, method and principle, and carry on argument to the foundation project that can adopt. This design is a professional course on what weve learned and comprehensive auditing of the secondary curriculum, is also one of the most comprehensive professional examinations, are we to do a walkthrough of the professional work of the future. According to regional profiles and engineering geological condition in which, after detailed geotechnical engineering investigation, through means such as soil testing, in-situ testing of various physical and mechanical indexes of the foundation soil, these physical and mechanical indices and calculated according to the specifications of the various layers of soil mechanics, Foundation for integrated assessment.Given that the proposed building is less than the base bearing capacity of Foundation soil pressure, do not meet the design requirements, you need to make the Foundation. Based on the engineering geological properties of Foundation soil, combining the character of upper structure on site engineering geological conditions, soil stability, seismic effects, analysis of site classification decisions. And evaluation of natural Foundation, this site the best programme for composite Foundation with CFG pile to Foundation treatment method.After calculation, after treatment of Foundation bearin