奉化方桥东江堤防安置小区岩土工程分析与评价.docVIP

东华理工大学毕业设计（论文） 摘要 摘 要 建筑场地的岩土工程条件的分析及评价是工程项目建设较为重要的环节，直接关系到建筑物的安全及使用情况，它为工程设计和施工提供地质参考依据。 本文根据奉化方桥东江堤防安置小区岩土工程勘察资料，运用工程地质钻探、原位测试、室内试验等方法，在系统介绍场地工程地质和地基土的物理力学指标统计参数的基础上，对拟建筑场地岩土工程进行分析与评价，给出了各土层的承载力特征值，选择出了适合的持力层，并给出了地基土承载力、地基土容许承载力及桩基设计参数、基坑支护设计参数。ZK113中桩径为0.6m，桩长36.5m进入持力层6-2的承载力容许值为2932kN；桩长45.7m，进入持力层7的承载力容许值为4862kN。综合评价认为，场地地貌类型较简单，地层结构较清晰，区域构造背景稳定，土类型主要为软弱土，属建筑抗震不利地段，但未发现其他对工程不利影响的不良地质现象和地质灾害。拟建场地的场地稳定性良好，适宜作为建筑场地。 关键词： 岩土工程； 工程地质条件 ； 基础工程 东华理工大学毕业设计（论文） abstract ABSTRACT The geotechnical engineering condition analysis and evaluation of the project is very important. It is directly related to the safety of buildings and its usage condition. It provides with the vital geological basis for engineering design and construction. According to the geotechnical engineering investigation materials on Dongjiang river embankment resettlement residential area in Fangqiao Fenghua, applying engineering geological drilling, in-situ test, laboratory test methods, on the basis of systematically introducing engineering geological conditions of site and the physical and mechanical index statistical parameters of foundation soil, the paper analysed and evaluated geotechnical engineering of the construction site, gave the bearing capacity of every stratigraphy, selected the applicable bearing stratum, and also gave the bearing capacity of the foundation soil, the allowable bearing capacity of the foundation soil, the parameters of design for pile foundation and foundation pit support.In ZK113,the pile Ф0.6m, length 36.5m, entering into the bearing stratum of subsoil 6-2, its allowable value of beating capacity was 2932kN; the pile length 45.7 m, entering into the bearing stratum of subsoil 7 ,its allowable value of beating capacity was 4862 kN.The synthetical evaluation hold that field geomorphic type is relatively simple, stratum structure is clear,regional tectonic background is s