内河框架式码头施工水位的优化研究

发布时间：2018-01-15 04:05

本文关键词：内河框架式码头施工水位的优化研究　出处：《重庆交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：在实际工程中，如何合理的确定施工水位将直接影响到码头的施工质量、施工效益、施工工期和经济效益，但是设计人员对施工水位的确定方法始终没有一个明确的定论。与此同时，随着我国对山区河流的逐步开发，越来越多的河流进入梯级开发，使得天然河流原有的水文特性发生改变，则以前港口码头施工水位的确定方法已不再适用，对港口码头工程的设计与施工也造成了一定影响，所以如何优化施工水位对实际工程建设有很大的意义。本文以拟建重钢芭蕉角改扩建码头为例，参考附近水文站的流量资料，结合港址处已有水位时间序列，采用水文频率分析和仿真分析结合，分析不同施工水位下的保证率，并确定出合适的施工工期，然后对拟建码头工程概预算进行分析，综合考虑安全、经济等因素，采用层次分析法最终得出一个施工水位的优化方案。主要研究内容如下：（1）根据码头工程附近水文站流量资料和已有的水位时间序列，采用水文频率分析和仿真分析结合的方法，选取不同的门限值水位，对拟建码头的施工水位保证率进行研究，确定出一个合适的施工工期。（2）根据不同施工水位下的施工方案，得出不同方案下的工程量，，结合工程概预算，经综合得出拟建码头工程在不同施工水位下的施工方案和概预算方案，为下文施工水位的优化提供基础。（3）层次分析法是水利工程综合风险分析中最常用的分析方法之一。本文对施工方案从工程失效风险、施工技术可行性、施工工期、工程概预算四个方面进行比选，得出一个施工水位的最优方案，为工程实际提供参考。本文在综合分析水位时间序列的基础上，通过水文频率法和仿真方法得到不同施工水位的保证率，综合考虑拟建码头的工程概预算、施工技术可行性、施工风险、工期等因素，提出了一个在理论上较为科学合理的确定施工水位的方法，对工程实际施工水位的确定有较大的参考意义。
[Abstract]:In the actual engineering, how to reasonably determine the construction water level will directly affect the construction quality, construction benefit, construction period and economic benefit of the wharf. At the same time, with the gradual development of mountain rivers in our country, more and more rivers enter the cascade development. Because of the change of the original hydrological characteristics of the natural river, the previous method of determining the construction water level of the port wharf is no longer applicable, and it also has a certain impact on the design and construction of the port wharf project. Therefore, how to optimize the construction water level is of great significance to the actual engineering construction. This paper takes the construction of Jiao Jiao reconstruction and extension wharf of Chongqing Iron and Steel Company as an example, referring to the discharge data of the nearby hydrological station and combining with the existing time series of water level at the port site. By combining hydrological frequency analysis with simulation analysis, this paper analyzes the guarantee rate under different construction water levels, and determines the appropriate construction period, and then analyzes the estimated budget of the proposed wharf project, considering the safety comprehensively. Finally, an optimization scheme of construction water level is obtained by analytic hierarchy process (AHP). The main research contents are as follows: 1) according to the discharge data of hydrologic station near the wharf project and the existing water level time series, different threshold water levels are selected by combining hydrological frequency analysis with simulation analysis. This paper studies the guarantee rate of the construction water level of the proposed wharf, and determines a suitable construction period. 2) according to the construction plan under different construction water level, the project quantity under different scheme is obtained, combined with the project estimate budget, the construction plan and budget estimate plan of the proposed wharf project under different construction water level are obtained synthetically. It provides the foundation for the optimization of the construction water level below. The Analytic hierarchy process (AHP) is one of the most commonly used analysis methods in the comprehensive risk analysis of water conservancy projects. By comparing and selecting four aspects of project estimate and budget, an optimal scheme of construction water level is obtained, which provides reference for engineering practice. On the basis of synthetically analyzing the time series of water level, this paper obtains the guarantee rate of different construction water level by hydrological frequency method and simulation method, and synthetically considers the engineering budget of the proposed wharf and the feasibility of construction technology. This paper puts forward a scientific and reasonable method for determining the construction water level in theory, which is of great reference significance to the determination of the actual construction water level.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U655;U656.1

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