摘 要 地基基础是建筑工程的根基,是决定其整体质量、使用年限等主要因素之一,对保证工程安全和控制工程造价至关重要.建筑物的基础设计方案所选择的基础形式与建筑物的使用性质、上部结构类型、地质情况、抗震性能、对周围建筑物的影响及施工条件等有密切的关系,为节约投资应该对地基基础多方案比较进行优化设计。桩基础是被认为适用于各种土质的一种基础形式,正受到越来越多的关注。随着工业技术和岩土工程建设的进展,桩的类型和成桩工艺、桩的设计理论和设计方法、桩的承载力和桩体结构的检测技术等方面均有进展,表现出很强的生命力,桩基础的应用也更为广泛。 本次设计的主要思路是根据地质勘察资料、施工条件、工程要求和相关法律规范,确定桩基础的桩型、桩的断面尺寸和长度、单桩容许承载力、桩的数量和平面布置以及承台的尺寸和构造,再根据承受的荷载验算桩基承载力和桩承台的强度。通过设计桩基础达到掌握桩基设计计算的具体原理及主要设计步骤,深化地理解桩基工程特性,把所学的力学知识和基础课程与具体工程紧密结合,真正实现理论应用于实践,增强动手能力,为今后解决工作中的实际问题提供帮助。关键词:岩土工程;地基基础;桩基础;钻孔灌注桩AbstractThe foundation is the key parts of building engineering, and it is one of the main factors that determine the overall quality and life of the bridge, and it is very important to guarantee the engineering safety and control engineering cost.。 Foundation design scheme of building foundation forms and buildings use nature, upper structure type, geological conditions , seismic performance, on the surrounding buildings and construction conditions have close relationship, in order to save investment should be of foundation and scheme comparison , optimization design。 The pile foundation is considered as a basic form of all kinds of soil, and is receiving more and more attention。. With the development of industrial technology and engineering construction , type of piles and pile technology, pile design theory and design method, pile bearing force and pile bo...