two-deck bridge 中文意思是什麼
two-deck bridge
解釋
雙層甲板橋樓-
Two - deck bridge
雙層甲板橋樓 -
This vessel is a steel cruiser of all - welded construction, two - layer deckhouse, catamaran, double engines, double propellers, double rudders and round bilge, with two semi - hulls connected by bridge, transverse framing for main hull, and longitudinal and transverse composite framing for the superstructure deck. the outlook is matched with the modern buildings and greening overview on both sides of the pearl river. the interior decoration layout is characterized by the multi - functions, luxury, comfort, catering and recreation
本船為鋼質全焊接結構二層甲板雙體雙機雙槳雙舵圓舭型線，兩片體以連接橋相聯，主船體橫骨架上層建築甲板縱橫混合骨架式，外觀具有與珠江兩岸現代化建築及沿岸綠化景緻協調內部裝飾布置以多功能豪華舒適以餐飲娛樂為特色的觀光游覽船，航行於珠江沙角水域以內河面。 -
Based on qualitative analysis and comparison of several options for suppressing transverse vibration on deck type steel plate girder of railway bridge, conclusions are made as follows : with static reinforcing, the vibration amplitude can be suppressed to some extent, but quasi - resonance of the bridge can not be avoided, moreover, the construction is inconvenient and costly. with option of two bridge connection, the effectiveness of vibration suppression is clear ( the damping ratio approaches 50 % ) and it is fairly economic and easy, however, the quasi - resonance of the bridge can not be avoided either. with dynamic option ( mtmd option ), the quasi - resonance of the bridge can be effectively avoided ( the damping ratio is up to 51. 38 % as tested in field ), moreover, the construction cost is low, and the construction is simply and convenient
通過對目前抑制鐵路上承式鋼板梁橋橫向振動的幾種方案進行定性的分析和比較，認為：靜力加固方案可以使橋梁振幅有所減小，但不能避免準共振現象的發生，而且工程造價較高，施工也不方便；兩橋連接方案減振效果明顯（減振率近50 % ） ，比較經濟也比較方便，但同樣不能避免準共振現象的發生；動力減振方案（ mtmd抑振方案）可以有效的抑制橋梁的準共振現象（現場試驗中減振率達51 . 83 % ） ，而且工程造價較低，施工簡單、方便。 -
The controlling of traffic noises has two ways in the thesis. first, the sonic source is limited and low - noise bridge deck pavement is suggested to use. second, the route of spread is controlled and acoustic barrier is set up, especially in the viaduct
限制噪聲源，主要建議使用低噪音橋面鋪裝層；控制噪聲傳播途徑，主要採取的措施是設置道路聲屏障，尤其在城市高架橋上推薦使用。
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