《某实验楼地基处理设计》-毕业论文.doc

PAGE IV 摘 要 建筑物和构筑物都是由上部结构和下部结构组成,地基是承托建筑物或构筑物基础的这一部分很小的场地.当地基的强度和稳定性不足以支承上部结构的自重和外荷载时,地基就会产生局部或整体剪切破坏;当地基变形过大时也会影响结构的使用;渗漏、液化都会使地基被破坏从而破坏结构。所以当天然地基软弱不能满足地基承载力和变形的设计要求时，地基就需要进行加固处理。 针对不同的地基条件，环境，以及结构的性质，工期等采取不同的地基处理方法。地基的主要处理方法有：置换、夯实、挤密、排水、胶结、加筋和冷热等处理方法。 本设计通过研究具体的某个工程，结合资料和自己大学期间所学内容，运用静压预制桩法研究地基的处理与加固。 关键词：地基处理,换填垫层法,强夯法,高压喷射注浆法,静压预制桩法 Abstract Buildings and structures by superstructure and substructure composed of a building or structure foundation is supporting this part of the basis of a very small space. The local base of strength and stability of not supporting the dead weight of the upper structure and external loads. Foundation will produce local or general shear failure; local base is too large deformation of the structure will also affect the use of; seepage, liquefaction will cause the ground to destroy the structure is destroyed. So when the weak natural foundation bearing capacity and deformation can not meet the design requirements, the foundation will need reinforcement. The design of a project by studying the specific combination of information and the content of what they have learned during their university, the use of precast pile of static ground and strengthening treatment. Keywords：foundation treatment，Replacement cushion method，Compaction, high pressure jet grouting, pressure precast pile 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc262567563 第一章 绪 论 PAGEREF _Toc262567563 \h 1 HYPERLINK \l _Toc262567564 第二章 各种地基加固技术简介 PAGEREF _Toc262567564 \h 2 HYPERLINK \l _Toc262567565 第三章 地基情况 PAGEREF _Toc262567565 \h 8 HYPERLINK \l _Toc262567566 第四章 地基桩基础设计 PAGEREF _Toc262567566 \h 10 HYPERLINK \l _Toc262567567 4.1 选择桩型、桩端持力层、承台埋深 PAGEREF _Toc262567567 \h 10 HYPERLINK \l _Toc262567568 4.1.1 选择桩型 PAGEREF _Toc262567568 \h 10 HYPERLINK \l _Toc262567569 4.1.2 选择桩的几何尺寸以及承台埋深 PAGEREF _Toc262567569 \h 10 HYPERLINK \l _Toc262567570 4.2 确定单桩极限承载力标准值 PAGEREF _Toc262567570 \h 12 HYPERLINK \l _Toc262567571 4.3 确定桩数和地面承台尺寸 PAGEREF _Toc2