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flow-ice
相关语句
  流冰
     A Method for Calculating Uniaxial Strength of Flow - Ice in Bohai Sea
     一种计算渤海流冰单轴抗压强度的方法
短句来源
     Considering the effect of strain rate, temperature, density and salinity of ice on the uniaxial strength, an equation for calculating uniaxial strength of flow-ice in Bohai Sea is presented, which can provide the dependence for offshore engineering structure design.
     考虑冰的应变率、温度、密度、含盐度对单轴抗压强度的影响,提出了渤海海域流冰的单轴抗压强度计算公式,可为海上工程结构物的设计提供依据。
短句来源
  相似匹配句对
     in traffic flow.
     交通事故导致的交通堵塞等等。
短句来源
     On Network Flow
     唯网络流论
短句来源
     The Maximum Alternative-Flow
     最大并流
短句来源
     Flow-meters and Its Selection
     流量仪表及其选型
短句来源
     Ice
     冰
短句来源
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A new concept of vibration-distribution structure was advanced by the Bobal Oil Engineering and Design Company. It aimed to reduce the vibration of the off shore platform caused by flowing ice, earthquake and wave impact, phenomena which are very likely to take place in the Bobal area of China. The principal idea of vibration-distribution structure is to divide the main column of the platform into an inner tube and an outer tube. The outer tube is connected to the legs and pontoons by braces. The inner tube,...

A new concept of vibration-distribution structure was advanced by the Bobal Oil Engineering and Design Company. It aimed to reduce the vibration of the off shore platform caused by flowing ice, earthquake and wave impact, phenomena which are very likely to take place in the Bobal area of China. The principal idea of vibration-distribution structure is to divide the main column of the platform into an inner tube and an outer tube. The outer tube is connected to the legs and pontoons by braces. The inner tube, which supports to Platform deck, is connected with the outer tube at the bottom. Both of them are either connected or disconnected at the position near the water line. For evaluating the effect of vibration reduction of such a structure, tests were carried out on a steel model. The loads of flowing ice, earthquake and waves were simulated by concentrated random forces applied on defferent points of the model. The tests were carried out in air and in water separately. The effect of vibration reduction was evaluated by the transfer function of the vibration responses at the measured points and represented by a dimensionless factor dependent on frequency only. It was shown by the tests that the vibration-distribution stucture is fairly effective in deducting the vibration of the platform.

根据渤海海洋环境的特点,提出了一种新的平台分振结构,以减小流冰引起的平台振动,同时考虑了地震和波浪对此分振结构的影响.分振结构的设想是将平台立柱分成内管和外管,外管通过斜撑杆和桩腿沉箱连接,内管则支承平台甲板.内管和外管在水线附近可以相联或分开.为此,设计并制造了一个钢结构模型,用集中的随机载荷分别输入到分振模型的各有关位置,以模拟流冰、地震和波浪等外载荷,分别在空气和水环境中作了减振效果试验.减振效果则利用测点振动响应的传递函数的概念来分析,减振效果是一个无量纲系数,仅是频率的函数.试验结果证明,此结构形式对减振有相当好的效果.

Considering the effect of strain rate, temperature, density and salinity of ice on the uniaxial strength, an equation for calculating uniaxial strength of flow-ice in Bohai Sea is presented, which can provide the dependence for offshore engineering structure design.

考虑冰的应变率、温度、密度、含盐度对单轴抗压强度的影响,提出了渤海海域流冰的单轴抗压强度计算公式,可为海上工程结构物的设计提供依据。

Yalungzangbo River is the upper reach of Brahmaputra River. It s an important international river inChina as well as in Asia. Besides, it's the highest elevation river in the world, with an basin area of about240 000 km in China and a river length of 2 239 km. Precipitation, snowmelt and groundwater are all sup-ply to the river. Runoff' s division is charaterized by diversified runoff terrain and vertical stepschanges. Runoff depth changes from 5 000 mm to below 200 mm toward Northwest. Runoff changes are smallin...

Yalungzangbo River is the upper reach of Brahmaputra River. It s an important international river inChina as well as in Asia. Besides, it's the highest elevation river in the world, with an basin area of about240 000 km in China and a river length of 2 239 km. Precipitation, snowmelt and groundwater are all sup-ply to the river. Runoff' s division is charaterized by diversified runoff terrain and vertical stepschanges. Runoff depth changes from 5 000 mm to below 200 mm toward Northwest. Runoff changes are smallin years but large in a year. Trie runoff from June to September takes more than 65% of the total in ayear. The flood of main river has the feature of two-peak figure. The runoff calculated at the border is 150 bil-lion m3, ranks the third following the Yangze River and Pearl River. The sediment of the mainstream is below1.0 kg/m3. But owing to sevre cold and wind in the highest terrain, the bank sand become the sand source ofvalley of windy and sandy landform. It has a low mineral rate with an amount between 40 mg/1 ~ 250 mg/1and total hardness, so that water source of clean and better quality is availabe for industrial, agricultural, andlife water supply. Besides, it's one of the region which has the lowest water temperature in China.The iceagebegins in winter, and band ice, flowing ice-flower rise much in main river and most of tributaries inYalumgzangbo River, and it' s daily circle varies clearly.The abundant water energy and natural depositsranks second in China, especially at the big turn in lower reaches it has a big drop.Moreover, a dam withthe most installed capacity in the world could be built there.

雅鲁藏布江是我国重要的国际河流,是世界上海拔最高的大江,河川径流丰沛含沙量低,水质优良,水温低,拉孜以下河段结冻。

 
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