載重拱 的英文怎麼說
中文拼音 [zǎizhònggǒng]
載重拱
英文
relieving arch-
The system reliability analysis method of arch - bridge is presented based on the failure model of arch rib, which is the most important failure model of arch - bridge. the control sections of arch rib in the analysis of bearing capacity reliability are determined according to the " five - spot coincidence method ", which is often used in arch - bridge design with chinese code
針對拱式橋結構體系中的主要受力構件?拱肋進行分析，借鑒拱橋設計中的「五點重合法」確定研究截面，進而根據該截面的不利情況確定荷載布置型式。Through analyzing all kinds of construction methods of building metro station under shield driven method in many countries, this paper studies the construction technique ( method ) of building metro station under shield driven method, taking in guangzhou no. 3 metro line, and linhe xilu station as the actual object. according to station class, function and topography and geology, the station schemes of twin - bore tunnel ( island ), firstly, three parallel tunnels ( island ), tri - bore tunnel ( island or side ) and four parallel tunnels ( island or side ) are proposed. secondly, the shape and main parameters of station structure on two schemes are analyzed with load - structure mode, for different overburden depth of tunnel and lining thickness, etc. thirdly, the construction process is simulated in 2d fem.,
根據建站的規模、使用功能及站位地形地質條件，提出了兩連拱結構島式站臺車站、三條平行隧道島式站臺車站、三連拱結構島式和側式站臺車站以及四條平行隧道島式和側式站臺車站方案；採用荷載?結構模式，對四種方案的主體結構的形式和重要參數進行分析研究，分不同的埋深、襯砌結構厚度和拱形結構的拱跨比進行了多組數值計算；採用平面有限元方法對四種車站結構的開挖施作過程進行了模擬分析。Because of the difference of shape character and function between arch dam and gravity dam, the effect of loads, such as seepage pressure and gravity in arch dam, is smaller than that in gravity dam, but, the thermal load and dam contraction are turned into main loads
由於拱壩的體形特點和工作原理與重力壩不同，所以在拱壩中滲透壓力與重力等作用荷載的影響要比在重力壩中小，而溫度荷載及壩體混凝土收縮則上升為主要荷載。Cable control effect infect the shape of span arch directly, even infect the bear of weight of bridge
扣索控制的優劣直接影響著拱肋線形的好壞，從而對于成橋承載受力有著重要影響。Restrain alteration size is applied to improve the efficiency of structure optimization. approximate reanalysis technology is introduced to save the time of stress reanalysis. the multi - cantilever method and the finite element method is combined to analysis the arch dam, to enhance the capability of practical applications in engineer
在拱壩優化設計中採用了約束變尺度演算法，提高了優化效率；在優化重分析過程中，採用近似重分析技術，節省應力分析時間；採用試載法和有限元相結合的應力分析方法，提高了解決實際工程問題的能力。Concrete filled steel tube ( cfst ) arch bridge is a new type of bridge which is widely applied in china recently, and it is a relatively ideal structural form for long span arch bridge. with the background of the practice of liantuo bridge, in the view of point of feasible in technology and reasonable in economy, the key techniques and difficulties in the construction of cfst arch bridge are analyzed and discussed in the thesis. the disadvantages in the current design and construction and the improvement method are also indicated
本文以蓮沱特大橋工程實踐為背景，以主拱施工研究為主線，對鋼管混凝土拱橋重難點施工工藝，從技術上可行、經濟上合理的角度出發，詳細的進行了分析闡述，並指出了設計施工中存在的不足和今後需改進的方向；通過對鋼管混凝土拱橋施工過程中內力的計算，確定了拱肋施工最不利荷載工況下加載重量、壓重順序和張拉臨時預應力束等一系列施工措施，並將計算結果與現場監測觀測數據進行了比較分析，為今後進一步研究這類結構提供了參考。The paper puts great emphasis on studying the mechanical performance and the carrying capacity of concrete - filled steel tubular ( cfst ), verifies the cyclo - hoop effect which steel tubular has exert to the concrete in cfst through the tridimensional finite element analysis of the entity of the arch rib, and proves that the cyclo - hoop effect is utilized to increase the axial compression cfst member carrying capacity
本文著重研究了鋼管混凝土結構的力學性能及承載能力，通過對拱肋實體所作的三維有限元分析，驗證了鋼管混凝土拱橋中鋼管對混凝土的環箍效應，證明了由於環箍效應的存在，使內填式鋼管混凝土軸壓承載力大大提高。But the double arch bridges have demerits, for the design lever and the load criterions on the low side then, and the steel is scarce in the structure. when the bridges are loaded heavily, and in heavy traffic for long time, most of them are damage
但是限於當時設計水平和荷載標準偏低，結構鋼材用量少，雙曲拱橋存在著先天不足，特別是在長期重荷載、大交通量的運營情況下，大部分雙曲拱橋都出現了不同程度的病害，許多已成為危橋。As an important bearing structure, the middle wall in the multi arch tunnel, often dominates the success and safety of a project
中隔墻作為連拱隧道的中樞結構和重要承載構件，其受力及位移情況往往對工程成敗和安全起著決定性作用。When there is original stage support only, the load ratio of surrounding rock gets more and more bigger with the increasing of crust stress, correspondingly, the load ratio of initial stage support gets smaller. when the initial stage support and the second support act each other, the load ratio of surrounding rock is more than fifty percent, and it has little change with the increasing of crust stress. the whole analysis of the surrounding rock and support shows that the bottom arch of liner and the feet of liner have serious stress concentration, so do the sidewalls and the foot of a wall of the surrounding rock
通過屈曲理論分析結果對比表明，彈性屈曲和突變失穩分析的結果比非線性屈曲分析的結果要大得多，非線性分析由於考慮了材料非線性和幾何非線性，因而結果與實際接近實際；當只有初期支護時，隨著地應力的增加，圍巖的荷載分擔率增大，相應地，初期支護的荷載分擔率就減小了；當有初期支護和二次襯砌共同作用時，圍巖的荷載分擔率在50以上，這一分擔率隨地應力的增加其變化不大；支護和巖體的整體分析表明，襯砌底拱及拱腳處應力集中嚴重，隧道巖體側墻及墻角圍巖的應力集中也較大。In the end, the steel - reinforced concrete arched bridge ( chun ' an weiping bridge ), which span is 198m, is analyzed by the proposed three - dimensional nonlinear finite element method and also those gained conclusions are directly adopted in the computation. the universal stability coefficient and nonlinear buckling stability coefficient of the bridge are respectively computed, in which the dead load and the live load are assembled according to the criterion. on the other side, the regularities of creep deformation and subsidiary stress of the investigated bridge under the first - stage dead load are carefully researched
最後，將本文所提出的三維非線性分析方法及其主要研究成果直接應用於198m跨勁型骨架式鋼管混凝土拱橋「淳安威坪大橋」的分析計算中，對該橋在最不利恆載和活載組合下的一般特徵值失穩系數和非線性屈曲系數進行了對比研究，並對一期恆載長期作用下該橋的徐變變形、附加應力以及截面應力、應變重分佈規律分別進行了深入研究。This paper discusses the performance of load bearing under different boundary conditions by model test and finite element analysis. the x - side binding of the supporting surface connecting with up - side chord member of slice arch is the most important factor that affects membrane effect of the slab. the load bearig capacity of the slab with fixed end increased forty percent of the capacity of the simple - supported slab, because membrane effect of the slab with fixed end is remarkable
本文通過模型試驗和有限元分析，較深入地探討了在不同邊界條件下微彎板的受力性能，結果發現與拱片上弦桿連接的支承面有側向約束條件是影響微彎板的薄膜效應最重要的因素，當該支承面為固結狀態時，薄膜效應十分顯著，其承載力比簡支約束微彎板的承載力提高了約40 。Taking nanpu bridge ( fst bridge ) in chun - an county as an instance, many problems on construction control technique for cfst bridge are discussed in this paper, including : the analysis method of simulating construction phase, construction monitoring technology, calculation of stayed - buckle - cable forces, allotting deadweight of pumping liquid concrete, analysis on the inflection of shrinkage and creep of core concrete in steel tube, analysis on the error in construction control, sensitivity analysis of parameters and parameter identification
本文以淳安縣南浦大橋為背景，對鋼管混凝土拱橋施工控制中的結構分析方法、施工監測技術、斜拉扣索索力計算、泵注混凝土自重荷載的分配、鋼管核心混凝土收縮徐變分析、施工控制誤差分析、參數敏感性分析及參數估計等問題展開研究。The hydro - pressure over - loading method and the strength reduction method were applied to numerical simulation of gravity pier - arch dam system, and the integral stability of the system was evaluated based on the suggested index for safety evaluation of the gravity pier
分別採用水壓超載法和折減強度參數法對重力墩拱壩系統進行數值模擬，並基於建議的重力墩安全評價指標對系統整體穩定性進行判定。分享友人