滨海滩涂杂填土软基处理方案的技术经济评价研究

发布时间：2018-01-08 07:08

本文关键词：滨海滩涂杂填土软基处理方案的技术经济评价研究　出处：《青岛理工大学》2013年硕士论文　论文类型：学位论文

【摘要】：由于滨海滩涂填土后形成的软弱土层存在固结的不完全性、填筑材料的杂质性（风化砂、建筑垃圾、吹淤、工业废料等）及深厚性等特点，一般很难满足建筑物的稳定性和承载力的要求，，需要考虑以下问题：（1）在众多制约软基处理方案选择的主要因素中，除了技术上可行外，还要在经济上合理，即需综合优选处理技术，以免工程成本过高，耐久性差，社会效益低等负面影响。（2）在绿色低碳背景下，地基处理技术的选择除技术、经济因素外，同时受到节能环保、公共利益以及可绿化行的条件约束。现阶段国内针对滨海滩涂杂填土软基的处理方案众多，然其遴选过程尚处于设计人员凭经验而论的状态，欠缺可循的量化判别依据。因此，在安全、环保、适用等条件下，研究滨海滩涂杂填土软基处理方案的综合评价方法具有十分重要的现实意义。本论文基于我国目前适用于滨海滩涂杂填土软基处理方案技术的分析，建立了最优经济综合评价模型，提出了滨海滩涂杂填土软基处理方案的优选计算公式，进而建立了滨海滩涂杂填土软基处理方案的经济综合评价指标体系。本文的主要创新点在于：（1）补充完善了影响滨海滩涂杂填土软基处理方案的经济影响因素，建立了滨海滩涂杂填土软基处理的经济评价指标体系；（2）将施工工期、施工难易程度、施工技术成熟度、施工安全性、耐久性及环境影响等非量化因素结合AHP+GRAP法进行比较分析及经济评价，确定了滨海滩涂杂填土软基处理各方案的权重及其关联度值；（3）对比选方案进行了当量化的研究分析，并结合关联度确立了最优经济综合评价模型，以此作为滨海滩涂杂填土软基处理方案的优选计算公式。经实证分析，最优经济综合评价模型计算便捷，结果可靠，有较高的实用价值。
[Abstract]:Due to the incompleteness of consolidation in the soft soil layer formed by the coastal beach fill, the impurity (weathering sand, construction waste, silting, industrial waste, etc.) and the depth of the filling material. It is generally difficult to meet the requirements of stability and bearing capacity of buildings. The following issues need to be considered: Among the many main factors restricting the selection of soft foundation treatment scheme, besides being technically feasible, it is also necessary to be economically reasonable, that is to say, it is necessary to synthesize the optimal treatment technology so as to avoid the project cost being too high and the durability poor. Low social benefits and other negative effects. 2) under the background of green and low carbon, the selection of foundation treatment technology is restricted by the conditions of energy saving, environmental protection, public interest and greening in addition to technical and economic factors. At this stage, there are many treatment schemes for the soft foundation of mixed fill in coastal beach, but its selection process is still in the state of designers' experience, and it lacks the basis of quantitative discrimination. Therefore, it is safe and environmentally friendly. Under suitable conditions, it is of great practical significance to study the comprehensive evaluation method of the soft foundation treatment scheme of mixed fill in coastal beach. Based on the analysis of the technology of soft foundation treatment of mixed fill in coastal beach in our country at present, the optimal economic comprehensive evaluation model is established, and the formula of optimal selection for soft foundation treatment of mixed fill in coastal beach is put forward in this paper. Furthermore, the economic comprehensive evaluation index system of soft foundation treatment scheme for mixed fill in coastal beach is established. The main innovation points of this paper are as follows: 1) the economic influencing factors of soft foundation treatment scheme of mixed fill in coastal beach are supplemented and perfected, and the economic evaluation index system of soft foundation treatment of mixed fill in coastal beach is established. 2) the non-quantitative factors such as construction duration, construction difficulty, construction technology maturity, construction safety, durability and environmental impact are compared and analyzed with AHP GRAP method. The weight and correlation degree of each scheme for soft foundation treatment of mixed fill in coastal beach are determined. 3) the comparative selection scheme is studied and analyzed, and the optimal economic comprehensive evaluation model is established in combination with the correlation degree, which can be used as the optimal selection formula for the soft foundation treatment scheme of mixed fill in coastal beach. Through empirical analysis, the optimal economic comprehensive evaluation model is convenient to calculate, the result is reliable and has higher practical value.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU447

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