中小型截面预应力混凝土实心方桩研究

发布时间：2018-03-09 17:38

本文选题：预应力混凝土实心方桩　切入点：力学性能　出处：《中国石油大学(华东)》2014年硕士论文　论文类型：学位论文

【摘要】：随着半岛蓝色经济区等国家战略的实施,在未来的几年内,将兴建大量公共建筑和港口码头等建筑与实施,在青岛地区的大部分建筑物都是以风化岩作为浅基础或桩基的持力层。基桩呈现端承桩的性质,对预制混凝土桩的入岩能力有较高的要求,且青岛沿海地区对预制混凝土桩的防腐蚀性能要求较高。因此对具有良好性能且适合在青岛地区大范围的推广应用,具有很好经济指标和节能型的预应力混凝土实心方桩的研制及其生产技术的研究变得十分重要和十分迫切。本文的主要研究内容有:通过对原材料参数的选取,经过力学分析,与实际情况相结合,设计出一种新型预应力混凝土实心方桩,使之符合建筑结构设计和桩基技术设计标准的要求,再通过设计所取数据,完成预应力实心方桩标准设计图集的绘制。进而研制新型方桩,并对该方桩的生产工艺流程进行研究,并解决本方桩在开发过程中关键技术。将预制生成的合格方桩抽样选取,通过实验研究,采集相关数据,进行数据处理,得出相应工程参数。根据理论计算,实验分析所得数据,运用有限元方法,建立预应力实心方桩的有限元模型,并对模型进行分析,得出相应工程参数。本文还通过对混凝土实心方桩,管桩,空心方桩,预应力实心方桩的力学性能和有限元分析结果进行对比分析,并通过对四种桩型的经济性指标对比分析,得出预应力实心方桩的自身突出优势。
[Abstract]:With the implementation of the national strategy of blue Peninsula Economic Zone, in the next few years, the construction and implementation of a large number of public buildings and the port will be built, most of the buildings in the Qingdao area are in the weathered rock as bearing stratum of shallow foundation or pile foundation. The pile has properties of end bearing pile, there are higher requirements of the precast concrete pile into rock, and Qingdao coastal area of precast concrete pile corrosion resistant high performance requirements. So to have a good performance and is suitable for popularization and application in the Qingdao area of a wide range of research on prestressed concrete solid has good economic indicators and energy-saving pile and its production technology has become very important and very urgent. The main research contents of this paper are: through the selection of the raw material parameters, through mechanical analysis, combined with the actual situation, design a new type of prestressed concrete Solid pile, to meet the design standards of structural design and construction technology of pile foundation requirements, and then through the design of the data, draw the complete prestressed concrete square pile standard design atlas. Then the development of a new type of pile, and study the production process of the pile, the pile and solution in the process of development the key technology. The qualified prefabricated pile generating sample, through experimental research, data collection, data processing, draw the corresponding engineering parameters. According to the theoretical calculation, experimental analysis of the data obtained by the finite element method, a finite element model of prestressed concrete square pile, and analyze the model, draw the corresponding engineering parameters through the pile of concrete. The solid square pile, hollow square pile, prestressed concrete square pile mechanical properties and finite element analysis results were analyzed, and through the economy of four kinds of pile type According to the comparison and analysis of the indexes, the prominent advantages of the prestressed solid square pile are obtained.

【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU473.1

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