基于内河大水位变幅的趸船系泊安全评价研究

发布时间：2018-01-08 01:05

本文关键词：基于内河大水位变幅的趸船系泊安全评价研究　出处：《重庆交通大学》2016年硕士论文　论文类型：学位论文

【摘要】：近些年来,随着三峡库区175m蓄水,三峡库区的枯水期和洪水期的水位落差达30米,在这种大水位变幅的前提下,使得内河趸船的系缆或锚链长度、受力各不相同,趸船的系泊难度以及要求越来越大。近几年洪水期趸船码头断缆事故频发,通过对重庆港的餐饮趸船码头的调查可知,由于缺乏规范和标准对趸船系泊设备配备的规范要求,只能凭经验或者参照航行船舶系泊设备配备的规定要求。以减少或杜绝内河大水位变幅下因缆绳受力估算不够而造成的断缆或走锚事故为目的,通过对实船在极端条件下所受水流力和实船锚链所能承受的最大力进行比较,建立基于内河大水位变幅下的趸船系泊安全评价系统,使趸船系泊设备的配备更加科学合理。趸船在极端条件下所受水流力:通过采集相关航道数据并进行处理,分析趸船系泊安全控制因素,对内河趸船码头风、浪、流载荷进行研究,分别建立风、浪、流的计算模型,得出系泊力标准值的计算模型。采集大水位变幅下极端天气相关数据,进行分析计算得出各锚链及缆绳标准值的受力大小。趸船锚链、缆绳所能承受的最大力:通过采集趸船实船的锚链、缆绳的相关数据并进行处理,对锚链、缆绳的直径、钢材类型、布设位置等进行研究,利用振动频率法确定系泊趸船各方向缆绳的最大屈服力,确立锚力、缆力的计算公式,得出各锚链、缆绳能承受的最大力。将考虑了国际公约和国内规范改进后的系泊力计算公式用C++语言进行编写,开发出单机版桌面应用系统。界面的实现主要由三个界面构成:(1)登录界面;(2)趸船基本信息输入界面(包括现状各缆绳极限载荷数据);(3)各缆极限载荷计算结果表示界面以及系泊安全评价结果表示界面。
[Abstract]:In recent years, with the 175m water storage in the three Gorges Reservoir area, the water level drop in the three Gorges Reservoir area is up to 30 meters during the dry and flood periods. Under the premise of this large water level change, the length of the mooring cable or the anchor chain of the inland river barges is made. The mooring difficulty and requirements of barges are becoming more and more difficult. In recent years, frequent cable breakage accidents occurred in barges during flood period, through the investigation of catering barge wharves in Chongqing Port. Due to the lack of specifications and standards for barges mooring equipment specification requirements. Only by experience or with reference to the requirements of the provisions for the provision of mooring equipment for navigation ships, the purpose is to reduce or eliminate cable breakage or anchor accidents caused by insufficient estimation of cable forces under large water level changes in inland rivers. A barge mooring safety evaluation system based on large water level change of inland river is established by comparing the current force of solid ship under extreme conditions and the most powerful force that solid ship anchor chain can bear. To make the barge mooring equipment more scientific and reasonable. Barges under extreme conditions under the water force: through collecting and processing the relevant waterway data, analysis barges mooring safety control factors, to the inland river barge wharf wind. The calculation model of wind, wave and current is established, and the calculation model of the standard value of mooring force is obtained. Analysis and calculation of the standard value of each anchor chain and cable force size. Barge anchor chain, cable can bear the most powerful: through collecting the barge anchor chain, cable related data and processing, the anchor chain. The diameter of cable, steel type, placement position and so on were studied. The maximum yield force of mooring barge was determined by vibration frequency method, the formula of anchor force and cable force was established, and each anchor chain was obtained. The mooring force calculation formula, which takes into account international conventions and domestic norms, will be compiled in C language. A desktop application system is developed. The implementation of the interface is mainly composed of three interfaces: 1) login interface; (2) barge basic information input interface (including current cable limit load data); 3) the calculation results of the limit loads of each cable represent the interface and the evaluation results of mooring safety.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U675.92

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