基于AHP的价值工程在桩基础方案优选应用的研究

发布时间：2018-02-25 16:15

本文关键词： 价值工程层次分析法功能系统图桩基础方案优选　出处：《广州大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着经济的高速发展，建筑行业也步入了发展的黄金时段，全国各地不断涌现出高层建筑。据统计，高层建筑中最常用的基础形式是桩基础，桩基础具有单桩承载力大、变形小、沉降小等优点。但桩基础种类繁多，施工方法也多种多样，选择不同的桩基础方案，产生的经济效益和社会效益相差巨大，因此，寻找一种合理的方法使桩基础方案优选非常必要。本文运用基于层次分析法（AHP）的价值工程理论对桩基础方案进行优选，主要研究工作有：（1）调整价值工程的工作程序，使之更适用于桩基础方案优选活动。分析桩基础方案优选的过程，总结桩基础方案优选的价值工程特点。根据价值工程理论，提出桩基础方案优选流程。（2）把AHP的价值工程理论运用于工程实例，首先根据工程概况及桩基础方案初选原则，提出桩基础备选方案。然后对桩基础方案优选活动进行功能分析，包括功能定义、功能分类和整理。建立桩基础方案优选活动的任务型功能系统图（任务型FAST图），去掉不必要的、辅助的功能，对任务型FAST图进行简化。简化的任务型FAST图层次结构清晰，逻辑性强，适合作为层次分析法的多层次递阶结构模型。（3）运用AHP对桩基础方案优选活动进行功能评价，构建判断矩阵，用matlab软件求其功能权重，再结合由业主、设计、勘察、监理、施工单位组成的评分小组对备选方案给出的评分，得到功能系数。对各备选方案进行科学、合理的成本预估，得到成本系数。最后根据价值工程原理，计算出价值系数，并依据价值系数高即为最优方案原则对桩基础备选方案进行优选。组织最优方案施工，桩基础的低应变检测和静载检测均符合要求，实际工期比计划工期缩短3天，实际成本比预估成本节省了约14万元，，证明了AHP的价值工程理论对桩基础方案优选的有效性。同时也为桩基础方案优选提供一种切实可行的手段。
[Abstract]:With the rapid development of economy, the construction industry has also stepped into the prime time of development. High-rise buildings have been emerging all over the country. According to statistics, the most commonly used foundation in high-rise buildings is pile foundation, which has a large bearing capacity of single pile. However, there are many kinds of pile foundation and various construction methods. Choosing different pile foundation schemes will result in great difference in economic and social benefits. It is necessary to find a reasonable method to optimize the pile foundation scheme. In this paper, the value engineering theory based on Analytic hierarchy process (AHP) is used to optimize the pile foundation scheme. The main research work is as follows:. 1) adjusting the working procedure of value engineering so that it is more suitable for the optimal selection of pile foundation scheme, analyzing the process of the optimum selection of pile foundation scheme, summing up the characteristics of value engineering of the optimal selection of pile foundation scheme, according to the theory of value engineering, The optimal selection flow of pile foundation scheme is put forward. The value engineering theory of AHP is applied to engineering examples. Firstly, according to the general situation of the project and the principle of primary selection of pile foundation scheme, the alternative scheme of pile foundation is put forward, and then the function analysis, including the definition of function, is carried out on the optimal selection of pile foundation scheme. Function classification and arrangement. The task-type FAST diagram (task-type FAST diagram) is established to simplify the task-type FAST diagram. The simplified task-based FAST diagram has a clear hierarchical structure. It has strong logic and is suitable for hierarchical structure model of analytic hierarchy process (AHP). (3) using AHP to evaluate the function of the optimal selection of pile foundation scheme, constructing judgment matrix, calculating its function weight with matlab software, and combining the score group composed of owner, design, survey, supervision and construction unit to grade the alternative scheme. Get the function coefficient. Carry on the scientific, reasonable cost estimate to each alternative scheme, get the cost coefficient. Finally, calculate the value coefficient according to the principle of value engineering, According to the principle of the optimal scheme with high value coefficient, the pile foundation alternative scheme is selected. In order to organize the optimal project construction, the low strain detection and static load detection of the pile foundation meet the requirements. The actual construction period is 3 days shorter than the planned construction period, and the actual cost is about 140,000 yuan less than the estimated cost. It is proved that the value engineering theory of AHP is effective for the optimal selection of pile foundation scheme, and it also provides a feasible means for the optimization of pile foundation scheme.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU753.3;TU72

【相似文献】