deck type bridge 中文意思是什麼
deck type bridge
解釋
上承橋-
The software ansys6. 0 is used to analysis the stability of the state after construction of tongwamen bridge, linear method is used in analyzing the finite element model of the bridge, the coeffient of stability of different state after construction is given. on the basis, the effect of different factors such as the arrangement of lateral brace, the sloping angle of arch ribs, the stiffness of bridge deck system, the effect of non - orientedly conservative loadings of the hanger and tie bar etc is discussed. the different coefficients of stability of changing these factors are given, so the factors that are vital to the lateral stability of x - type arches are found, and the rationality of the methods taken to enhance the lateral stability of tongwamen bridge is evaluated
本文應用有限元分析商業軟體ansys6 . 0 ，採用線彈性方法，通過對該橋的空間有限元模型進行穩定性分析，得出其成橋運營階段各種工況下的穩定安全系數。在此基礎上，本文還通過有限元模型分析，就拱的矢跨比、吊桿（立柱）的非保向力效應、橋面系的剛度、橫撐布置形式、拱肋側傾角等因素對該橋整體穩定性的影響展開探討與研究。文中給出了各因素變化情況下的穩定安全系數，指出了對鋼管混凝土提籃拱橫向穩定性有顯著影響的因素及其合理變化范圍，並對銅瓦門大橋提高橫向穩定性的措施的經濟合理性進行了分析。 -
Zhaihe bridge was taken as an engineering example, in - situ tests of deflections and stresses of the concrete slabs of 10 conditions before and after steel rods plantation and transverse pre - stresses execution, and the testing shou reveal that steel rods plantation can protect the assemble type concrete slab bridage deck, increase the bearing capacities of bridge and decrease the deflections, which provide basis for related engineering about reinforcement of bridge deck
以寨河橋為工程實例，進行了植筋和預應力張拉前後10個工況的混凝土板撓度和應力的現場測試，結果表明，植筋等增加橋面預應力的措施確實能夠預防橋面病害的發生，並能提高橋面的承載力，減小撓度，為相關工程提供了依據。 -
Stay cables of the long - span cable - stayed bridges are susceptible to vibration under wind loading, or wind incorporated rain excitation, or deck motion due to high flexibility, relatively small mass and very low inherent damping, such as vortex shedding, wake galloping, parameter resonance and wind - rain induced vibration. large - amplitude vibration of cables may reduce the life of cables and threaten safe traffic, and has been considered today as one of the most critical problems for this type of bridge
大跨度斜拉橋拉索具有較小的質量和極低的阻尼，在風、風雨及橋面振動等外部激勵下極易發生振動，如渦激共振、尾流馳振、參數共振和風雨振等，拉索的大幅振動對拉索的使用壽命和橋梁安全運營構成極大威脅，它已成為大跨度斜拉橋急需解決的關鍵問題之一。 -
Though great progress has been achieved on researches on the design theory, structural type, structure details and construction method of the composite bridge, there are still many problems, such as crack control of the concrete deck, influence of the connecting rigidity over the structural mechanical characteristics and mutual depende ncy between design and construction, need deeper researches for better solutions
對組合結構橋梁的設計理論、結構形式和構造細節、施工方法等方面的研究已經取得了很大進展，但仍然存在許多問題需要深入研究和完善，例如：混凝土板裂紋控制、接合剛度對結構受力性能的影響、設計與施工的依存性等。 -
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。 -
To plant steel rods in the assemble type concrete slab bridge deck and execute transverse pre - stresses not only can strengthen links between the assemble type concrete slabs and the bridge deck, but also can strengthen the transverse entirety of the whole bridge structures, and intensify the resistance of the bridge to active loads, vibrations and abrasions
摘要通過在裝配式混凝土板板頂植筋並對橋面施加橫向預應力，不但可以加強板與橋面鋪裝層的連接，而且還可以加強整體結構的橫向整體性，增強結構對動載沖擊、震動、磨耗抵抗能力。 -
The paper sums up the construction technique of qinjiatuo super bridge in all : consolidating the soft ground foundation with vibrating & impacting macadam piles ; constructing the bored cast - in - place piles under the complex geological condition ; developing and researching cable - stayed handling basket with the bearing capacity of 3000kn ; beam construction ; construction technique of the new type bridge deck and dynamic & static load test
本文全面總結了覃家沱特大橋施工技術：振沖碎石樁加固軟弱地基、復雜地質情況下鉆孔樁施工、承載力3000kn斜拉式掛籃開發與研製、梁部施工、新型橋面鋪裝層施工技術及動靜載試驗。
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