影响钻孔灌注桩承载力的主要因素及施工工法研究

发布时间：2018-11-08 18:32

【摘要】：十三五期间,国家对基础设施的投入空前高涨,主要表现为对高速公路、一级公路、二级公路、"村村通"公路的新建、改建;对高速铁路、普通铁路的新建、改造;对水利设施的完善及在全国主要大城市修建轨道交通和城市管廊工程。古老的桩基础作为目前为止最主要的深基础形式之一,由于它无与伦比优越的性能,在未来的高速公路、高速铁路、桥梁工程以及水利大坝等等建设中无疑将会得到更加广泛的应用。本文主要是研究影响桩的竖向受力状态的主要影响因子、成孔技术及具体工程应用。开始先主要介绍桩随着人类文明的推进,桩的技术也伴着历史的发展而大步向前迈进。接下来介绍桩在自身的发展中,随着社会的进步,桩的分类也随之越来越多,然后论述对其竖向承载力的主要影响因素。最后介绍三种不同钻孔灌注桩的基本成孔原理、适用范围、每种灌注桩的优缺点以及打桩机械设备的选择。最后结合具体的工程案例,将理论知识与专业实践结合起来,阐述施工方案的选择、现场诸多管理措施以及文明作业、环保的保证措施。钻孔灌注桩正是由于抗震性优异、环保、作业期间噪音低等诸多优点,其使用范围随着时间的推进必将会越来越广。
[Abstract]:During the 13th Five-Year Plan period, the state's investment in infrastructure was unprecedented, mainly manifested in the construction and reconstruction of highways, first-class highways, second-class highways, "village-connected" highways, high-speed railways and ordinary railways. The improvement of water conservancy facilities and the construction of rail transit and urban management corridor in major cities of China. The ancient pile foundation as one of the most important forms of deep foundation so far, because of its unparalleled superior performance, in the future of the highway, high-speed railway, Bridge engineering and water conservancy dams and other construction will undoubtedly be more widely used. In this paper, the main factors affecting the vertical stress state of pile, the hole forming technology and the concrete engineering application are studied. Beginning with the introduction of the pile with the advancement of human civilization, pile technology with the development of history and stride forward. With the development of the society, the classification of piles becomes more and more, and the main factors affecting the vertical bearing capacity of piles are discussed. At last, the paper introduces the basic hole forming principle of three different bored cast-in-place piles, the applicable range, the advantages and disadvantages of each kind of cast-in-place pile, and the selection of the pile-driver 's equipment. In the end, combining the theory knowledge with the professional practice, combined with the concrete engineering cases, this paper expounds the selection of the construction scheme, many management measures on the spot, and the guarantee measures of civilized operation and environmental protection. It is precisely because of the advantages of excellent seismic resistance, environmental protection and low noise during the operation that bored cast-in-place piles will be used more and more widely with the development of time.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU753.3

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