独立基础毕业设计

论文主要对平顶山中房?印象?听雨苑3#楼基础设计地基基础进行设计论证。本工程地下一层，地上11.5层，框架剪力墙结构形式；地上总建筑面积：9142.18m2地下建筑面积775.42 m2。

论文的设计依据主要是根据周边环境、场地岩土工程性质、地下水的情况、根据相应的资料和结合西安地区相关类似的工程经验对基础的尺寸、配筋和地基承载力进行计算。在计算上部荷载时通过相应的规范进行查找计算。

基础的设计方法：根据上部结构和资料计算上部荷载和地基土的承载力计算；确定基础形式；地基土是否需要进行降水处理、是否要进行防腐蚀处理和在冻土层中该怎么设计等。需要计算基础的地面尺寸、基础的高度、基础的配筋。基础在进行地基基础的抗冲切验算和基础的变形验算。

关键词：独立基础；设计计算；地基处理

Abstract

The main thesis of Pingdingshan impression in the room ? yinxiang? Machines Court # 3 basic foundation design floor design argument. The project basement, ground floor 11.5, the framework in the form of shear wall structure; total ground floor area: 9142.18m2 underground construction area of 775.42 m2.

The design is mainly based on the paper according to the situation surrounding environment, site geotechnical properties, groundwater, according to the corresponding data and combined with relevant experience in similar projects in Xi'an on the basis of size, reinforcement and foundation bearing capacity calculations. In calculating the upper load lookup calculated by the corresponding specification.

Based design approach: the upper load bearing capacity of the foundation soil and the upper structure and data calculated according to; determine basic forms; whether the soil needs to precipitation treatment, whether you want to be protected against corrosion and how in the permafrost layer design. Be calculated based on the size of the ground, the height of the foundation, the foundation reinforcement. Basis during the checking of foundation and foundation of punching shear deformation checking.

Keywords: independent foundation; design calculations; foundation treatment

目录

目录................................................................................................................................. I 1 设计总说明.............................................................................................................. 1

1.1 研究内容及技术路线................................................................................... 1 1.2 基础选型....................................................................................................... 1

1.2.1 基础钢筋............................................................................................ 1 1.2.2 静力触探试验成果统计.................................................................... 2 1.2.3 室内土工试验成果统计.................................................................... 3 1.3 设计依据....................................................................................................... 8 1.4 抗震设防烈度............................................................................................... 8 1.5 场地类别....................................................................................................... 9 1.6 场地地震效应评价....................................................................................... 9

1.6.1 抗震设计............................................................................................ 9 1.6.2 压缩性评价...................................................................................... 10 1.7 地基土各土层的承载力评价..................................................................... 12 1.8 区域自然地理与地质条件......................................................................... 13

1.8.1 水文气象.......................................................................................... 13 1.8.2 地下水及土的不良评价评价及处理.............................................. 13 1.8.3 地质地貌.......................................................................................... 14 1.8.4 基坑开挖与支护.............................................................................. 14 1.8.5 结论与建议...................................................................................... 14 1.9 地层结构特征............................................................................................. 15 1.10 岩土工程性质........................................................................................... 16 2 荷载统计................................................................................................................ 17

2.1 楼面竖向荷载标准值计算......................................................................... 17

2.1.1 屋面荷载.......................................................................................... 17 2.1.2 楼面荷载（2~11.5）....................................................................... 17 2.1.3 地面荷载（地下一层）.................................................................. 21 2.1.4 屋平面荷载...................................................................................... 22 2.2 柱、梁、剪力墙的自重............................................................................. 23

2.2.1 柱的自重.......................................................................................... 23 2.2.2 梁的自重.......................................................................................... 23 2.2.3 剪力墙的自重.................................................................................. 24 2.2.4 风、雪、门、窗荷载...................................................................... 26

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2.3 荷载统计..................................................................................................... 27

2.3.1 地下室荷载...................................................................................... 27 2.3.2 一、二层每层荷载.......................................................................... 27 2.3.3 三~十层每层荷载 ........................................................................... 27 2.3.4 十一层荷载...................................................................................... 27 2.3.5 屋面荷载.......................................................................................... 27

3 独立基础设计........................................................................................................ 30

3.1 地基基础埋深及处理................................................................................. 30

3.1.1 确定基础埋置深度.......................................................................... 30 3.1.2 地基处理.......................................................................................... 30 3.1.3 地基承载力特征值和基础材料...................................................... 31 3.2 计算基础尺寸............................................................................................. 31

3.2.1 计算基础高度.................................................................................. 34 3.2.2 配筋计算.......................................................................................... 37 3.2.3 持力层承载力计算.......................................................................... 40 3.3 地基变形验算............................................................................................. 40 4 基础施工................................................................................................................ 41

4.1 柱下独立基础施工的一般步骤................................................................. 41 4.2 本工程在施工中可能遇到问题................................................................. 42

4.2.1 地下水对施工的影响...................................................................... 42 4.2.2 一般对于地下水的降水处理的方法与措施有.............................. 43 4.3 基处理的具体方法与工艺......................................................................... 43

4.3.1 砂垫层的施工要点.......................................................................... 44 4.3.2 质量控制.......................................................................................... 44 4.3.3 应注意的几点事项.......................................................................... 44

5 结论........................................................................................................................ 46 6 致谢........................................................................................................................ 47 参考文献...................................................................................................................... 48

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