超高层建筑基础工程造价影响因素及控制措施研究

发布时间：2018-06-18 05:34

本文选题：层次分析法 + 基坑支护　；参考：《石家庄铁道大学》2015年硕士论文

【摘要】：随着经济的迅速发展,我国城市化的步伐进一步加快,大量的农村人口向城市转移,城市用地紧缺与城市人口持续增加的矛盾愈发突出。为了缓解这一矛盾,超高层建筑应运而生。2014年全球完成超200米超高层建筑97座,其中我国拥有58座,约占60%。超高层建筑的迅速发展使得深基坑的发展成为了必然。地下空间的桩基及基坑支护工程的主要作用是为主体结构传递竖向荷载,并为基坑安全施工起到止水及围护作用,此部分费用约占地下基础工程造价的30%-40%。该项费用受各阶段诸多因素的影响,若控制不当,将导致基础工程费用超目标成本,影响整体利润。因此找出在各阶段影响工程造价的因素并提出事前控制措施,是本文的研究方向和重点。本文首先分析了桩基及基坑支护的分类、特点及适用范围。其次分析了桩基及基坑支护在各阶段对造价的影响因素,并运用层次分析法找出了超高层建筑中的桩基及基坑支护工程影响项目成本的关键阶段为设计阶段及方案阶段,影响桩基及基坑支护工程造价的主要因素是设计人员的专业水平和素质、工程地质勘察资料的准确性及支护方案的科学合理性。基于此,提出了对超高层项目进行成本控制的具体措施,最后结合某超高层建筑基础工程实例进行了实证研究。以上研究为基坑及基坑支护工程成本控制提供了有效的措施,以期为超高层建筑项目的基础工程成本控制提供参考,降低超高层建筑的开发及经营成本,提高资本利用率,从成本上控制房价,保持房地产业的健康发展。
[Abstract]:With the rapid development of economy, the pace of urbanization in China has been further accelerated, a large number of rural population has been transferred to the city, and the contradiction between the shortage of urban land and the continuous increase of urban population is becoming more and more prominent. In order to alleviate this contradiction, super-tall buildings came into being. In 2014, 97 super-tall buildings were completed in the world, of which 58 were in China, about 60 in China. The rapid development of super-high-rise buildings makes the development of deep foundation pit inevitable. The main function of pile foundation and foundation pit supporting engineering in underground space is to transfer vertical load for the main structure and to prevent water and enclosure for the safe construction of foundation pit, which accounts for about 30-40% of the cost of underground foundation engineering. The cost is affected by many factors in each stage, if not controlled properly, it will lead to the cost of foundation project exceeding the target cost, which will affect the overall profit. Therefore, it is the research direction and key point of this paper to find out the factors that affect the project cost in each stage and put forward the prior control measures. This paper first analyzes the classification, characteristics and applicable scope of pile foundation and foundation pit support. Secondly, the paper analyzes the influence factors of pile foundation and foundation pit support on the cost of each stage, and finds out that the key stage of the project cost of pile foundation and foundation pit support in super high-rise building is the design stage and the project stage by using the analytic hierarchy process (AHP). The main factors influencing the construction cost of pile foundation and foundation pit support project are the professional level and quality of the designer, the accuracy of engineering geological survey data and the scientific rationality of the supporting scheme. Based on this, the paper puts forward the concrete measures to control the cost of the super high-rise building, and finally carries on the demonstration research with the example of a super high-rise building foundation project. The above research provides effective measures for the cost control of foundation pit and foundation pit supporting engineering, in order to provide reference for the cost control of foundation engineering of super high-rise building project, to reduce the development and operation cost of super high-rise building, and to improve the utilization ratio of capital. From the cost of controlling housing prices, to maintain the healthy development of the real estate industry.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU723.3;TU974

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