浅谈框架结构柱下基础形式的选择
摘要：本文主要讨论了框架结构柱下基础的各种形式及适用条件。基础结构的形式很多，设计时应选择能够适应上部结构、符合使用要求、满足地基基础设计要求及技术上合理的基础结构方案。框架结构可以选择的基础类型有无筋扩展基础、扩展基础、联合基础、条形基础、交叉条形基础、筏板基础、箱形基础、壳体基础、桩基础、地下连续墙和沉井等。基础设计的内容包括基础形式的选择、基础埋置深度及基底面积大小、基础内力和断面计算等。本文着重介绍了基础形式的选择，即综合考虑拟建场地的工程地质条件、地基勘察资料、荷载的性质及大小和分布等因素来选择基础类型。
关键词：框架结构；基础形式；适用条件
Brief Discussion on Selection of Foundation under the Pillars of Frame Structure
ABSTRACT：This paper mainly discusses various forms and applicable conditions of the foundation under the pillars of frame structure. There are many forms of infrastructure. The design should adapt to the superstructure, meet the requirements of the use of the foundation and technically reasonable infrastructure solutions. The form of the foundation under the pillars of frame structure can be chosed from the reinforcement Foundation, the extended Foundation, the Joint Foundation, the Strip Foundation, the Cross Strip Foundation, the Raft Foundation, the Box Foundation, the Shell Foundation, the pile Foundation, the diaphragm wall and the sunk well. The design of the foundation includes the selection of foundation, the depth of foundation embedding and the size of base area, the internal force of foundation and the calculation of section. This paper mainly introduces the selection of the foundation, considering the engineering geology condition of the proposed site, the foundation investigation data, the property and the size and distribution of the load, etc.
Key words: frame structure; foundation; applicatable condition
前 言
基础属于地下隐蔽工程，是建筑物的根本，其设计和质量直接关系着建筑物的安危。大量例子表明，建筑物发生事故，很多与基础问题有关，因此基础设计必须满足强度要求、变形要求和上部结构的其他要求。本文着重研究基础的选型依据，便于基础设计时做出最优方案，保证建筑物的根本安全。
1 基础的分类
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