浅谈桩基础施工方案 毕业论文.doc

毕业设计（论文） （ 2012 届） 题 目：浅谈桩基础施工方案 系（部）： ****** 专业班级：**** 姓 　 名：**** 指导老师： **** 2012年**月***日 摘要 桩基础是人类在软弱地基上建造建筑物的一种创造，是最古老、最基本的一种基础类型；又是一种应用广泛、发展迅速、生命力很强的基础型式。近二十年来，由于工程建设和工业技术的发展，桩的类型和成桩工艺，桩的承载力和桩体结构完整性的检测，桩基的设计水平，都有较大的提高。然而，由于土的变异性及桩基与土相互作用的复杂性，迄今成桩质量的控制与检测，桩基的计算理论与方法，仍然是不够完善而有待研究发展的。 桩基础可以采用不同的材料（木、现场灌注；打入法、压入法），可以支撑在不同的土层中，可以作为各类工程结构物的基础（建筑的低桩承台、桥梁或码头的高桩承台），因而其受力性状各不相同，承载能力相差悬殊，施工工艺和设备极其多样。桩基技术极为复杂，发展空间相当广阔，成为地基基础领域中的一个非常活跃的、具有很强生命力分支领域，50年来出现了许多新的桩型、新的工艺、新的设计理论和新的科技成果，成为我国工程建设的有力支柱。本文对钻孔桩进行了综述，并阐述了他们的试用条件。 关键词： 桩基础 混凝土 钢筋 配合比 泥浆 Abstract Pile foundation is the human on the soft foundation of building a kind of creation, is the oldest, the most basic one kind of basic types; and is widely used as a kind of very strong vitality, development is rapid, the foundation type. Come nearly twenty years, as a result of the construction and the development of industrial technology, the pile type and the process of forming piles, the bearing capacity of the pile and the pile body structure integrity testing, pile foundation design level, has greatly improved. However, due to the variability of soil and pile soil interaction complexity, so the pile quality control and detection of pile foundation, the calculation theory and method, is still not perfect and need to be research development. Pile foundation can be made of different materials ( wood, in-situ perfusion; into the law, the method of pressing ), can support in different soil layers, can be used as various types of engineering structure foundation ( construction of low pile cap of bridge pier, or high pile cap ), so the stress character of each are not identical, bearing capacity disparity, construction process and equipment are extremely diverse. Technique of pile is extremely complex, development space is very wide, become the foundation in the field of a very active, has strong vitality of