預彎梁 的英文怎麼說
中文拼音 [yùwānliáng]
預彎梁
英文
preflex beam-
To study the flexural behavior, ultimate bearing state and laws of internal force redistribution of prestressed concrete continuous beams cast by different construction methods, the model tests for three pieces of the continuous beams were carride out, in which three kinds of the construction methods, such as those of lowering formwork supports at one time, transferring simply - supported structure into the continuous one and casting the beam by cantilever construction, were considered
摘要為研究不同施工方法下預應力混凝土連續梁的彎曲性能、極限受力狀態及內力重分佈規律，進行了3根連續梁模型試驗，分別考慮一次落架、簡支變連續和懸臂施工3種施工方法。It also investigates the effect of secondary torque, the characteristics of moment redistribution subjected to reversed cyclic loading, and the role of spandrel beams in the overall response
著重討論了預應力次扭矩對結構受力的影響、水平荷載作用下結構的彎扭分配規律以及如何進行邊主梁的合理設計等問題。5 ) a new type of superposed beam used in wutaizha terminal market, with notch at each end of the prefabricated member, is analysed, and design method of it is also regard as the representative of the superposed beam with notchs
5 ）針對武泰閘農副產品市場工程中使用的帶槽預制構件疊合梁，根據前面提出的計算方法，總結了這類形式的疊合式受彎構件的設計計算原則以及計算方法。The study in the paper starts with beam distortions, and it treats the plastic deformation area as pure bending sect, rest of the beam as rigid bodies. according to different shapes of the external tendons, it divides into three structural forms familiar in projects, that is the beams with no deviator, with a deviator and with two deviators, and studies the relation between the deformation of the external prestressing tendons and that of the beams, and derives the formulas of the ultimate stress increment of external tendons. in the formulas, the ultimate angle corresponding to half of the plastic deformation area is considered as a variable parameter
本文首先從梁極限狀態下的變形入手，將塑性鉸區看作純彎段，將塑性鉸以外的區域看作剛體，按照體外預應力筋的形狀不同，分工程中最常見的三種體外結構形式，即無轉向塊的直線型體外筋混凝土梁、具有一個轉向塊的單折線型梁和具有兩個轉向塊的雙折線型梁，研究體外預應力筋變形和梁體的變形間的關系，推導出以極限狀態下塑性鉸區之半對應的轉角為參數的計算體外預應力混凝土簡支梁以及連續梁的體外筋應力增量計算公式，並進一步求得梁的極限承載力。Here we obtain the strain compatibility method ande equilibrium of forces and concepts of fracture mechanincs, they can be used to predict the ultimats strength in flexure that can be achieved by such elements, given the cfrp cross - sectional area, or conversely, the required cfrp cross - sectional area to achieve a targeted resisting moment of rehabilitated flexureal elements
Cfrp加固梁在承受彎曲荷載時的破壞是鋼筋屈服后碳纖維斷裂和鋼筋屈服后混凝土壓碎。本文通過應變相容方法和對破壞機理的定義，由給定的cfrp橫截面積預測加固梁的極限彎曲強度；或者相反，在已知加固梁的極限彎曲強度時可以求出所需的cfrp橫截面積。The basic theory and step of whole process analysis of reinforced concrete beam section flexural rigidity is stated, the realization program is worked out and the academic example is analyzed. 4. based on the static - state load test result of two practical projects, the application of the reinforced concrete beam system bridge structure disease examination and structure damage evaluation method is stated, and satisfaction result is gained
1 、綜述了當前混凝土橋梁結構檢測及損傷識別的各種方法體系，並簡要評價了各方法體系的應用與不足； 2 、論述了基於靜載試驗的梁分段剛度系統識別的基本原理，編制了實現程序，並進行了數值算例分析，提出基於本原理的梁橋結構損傷識別與結構評價方法體系； 3 、闡述了鋼筋混凝土梁截面抗彎剛度全過程分析的基本原理和方法步驟，編制了實現程序，並進行了相關算例分析； 4 、結合兩片工程實例梁的靜載試驗，詳述了梁橋結構損傷識別與結構評價方法的應用過程，得到了預期的效果。This paper sets up a fuzzy optimum math - model of the prestressed degree for prestressing bundle disposition of prestressed concrete continuous beam bridges, which is transformed into a clear math program by - level cut - set. by the solution of the clear math program, a succession of reasonable prestressing moments can be obtained. then it is convenient to dispose the prestressing system by only taking account of geometric factors of all controlling sections. based on this, a theory of automatic disposition of the prestressing bundles is proposed and an engineering example is given to demonstrate it
建立預應力混凝土連續梁橋預應力度的模糊優化問題，按-水平截集解法，將模糊優化問題轉化為確定性的數學規劃問題.求得一較合理的消壓彎矩后，只需按控制截面的構造進行預應力體系設計.在此基礎上提出了配束自動化的基本思想，並以一實例說明其理論應用Abstract : this paper sets up a fuzzy optimum math - model of the prestressed degree for prestressing bundle disposition of prestressed concrete continuous beam bridges, which is transformed into a clear math program by - level cut - set. by the solution of the clear math program, a succession of reasonable prestressing moments can be obtained. then it is convenient to dispose the prestressing system by only taking account of geometric factors of all controlling sections. based on this, a theory of automatic disposition of the prestressing bundles is proposed and an engineering example is given to demonstrate it
文摘:建立預應力混凝土連續梁橋預應力度的模糊優化問題，按-水平截集解法，將模糊優化問題轉化為確定性的數學規劃問題.求得一較合理的消壓彎矩后，只需按控制截面的構造進行預應力體系設計.在此基礎上提出了配束自動化的基本思想，並以一實例說明其理論應用Suggestion to post - tensioned bounded pre - stressing construction in small - radius camber arch bridges
小半徑彎梁橋中后張有粘結預應力施工問題芻議According to hysteretic properties under low - cyclic loading and some other suggestions, the moment - curvature restoring force computation model of unbonded partially prestressed concrete section, which considering the ppr, is given
此外由於施加了預應力，使得該結構具有良好的恢復力特性。本文還根據試驗結果和相關參考文獻提出了考慮不同預應力度的預應力扁梁截面彎矩?曲率恢復力計算模型。Based on the results of experimental research, we can find that the construction method of joints zone are feasible and safe, the joints between concrete - filled steel tubular core columns and prestressed concrete beams have good ductility and good energy dissipation, and the concrete - filled steel tubular core columns can raise the shear strength of core area of joints and the bending strength of the column ends
試驗研究發現，針對該節點所設計的構造處理方式是可行的、安全的，鋼管混凝土核心柱與預應力混凝土梁框架節點有著很好的延性和能量耗散能力，由於柱為鋼管混凝土核心柱，大大提高了節點核心區的抗剪承載力，同時也使柱端抗彎承載力得到加強。The prestressed continuous beam - arch composite bridges are a special structural system where the horizontal thrust of the arch rib is absorbed by a prestressed tie at deck level. in some cases, this type of structure is preferable because it does n ' t have the large thrust at the spring hi traditional arch bridges and the somewhat large bending moment and shear force in traditional beam bridges. as a result, the performances of the prestressing reinforcement can be efficiently utilized
它利用拱肋承擔壓力，系梁預應力束抵抗拱端推力，吊桿及縱橫橋面系結構承受橋面荷載，既克服了傳統拱橋巨大的拱端推力，又改善了連續梁橋較大的彎矩和剪力的受力狀況，最大限度地發揮了拱梁混凝土和預應力鋼筋各自的特點，經濟效益顯著。With the method, each mechanical stage of this kind of structure could be simulated and calculated including crack moment, ultimate strength, stresses and deflections of all stages more precisely
利用該方法可以對結構的各受力階段進行模擬計算，得出各階段預彎鋼梁、一期混凝土、二期混凝土的應力和結構變形，並能計算出預彎組合梁的開裂荷載和極限破壞荷載。Elastic analysis method of preflex composite beam proposed by japanese was broken through
該方法突破了日本學者提出的以彈性分析法為基礎的預彎梁計算理論。Presently, preflex composite beam has been applied in civil buildings, highway bridges and other fields of construction
目前，預彎組合梁已開始應用於我國土木建築、公路橋梁等建築領域中。More than ten preflex composite beam bridges were designed and analyzed with this method, and excellent results were obtained
利用該方法已完成了十余座預彎組合梁橋的設計分析，取得了良好的計算結果。Nonlinear analysis method on the mechanical behavior of preflex composite beams was established with the nonlinear stress - strain curves of materials
摘要採用材料非線性本構關系研究預彎組合梁的受力行為，建立預彎組合梁從預彎鋼梁加荷到結構破壞的非線性全過程分析方法。In order to accelerate the development of preflex composite beam in railway bridges and to design and construct preflex composite beam bridges of railway in our country reasonably, this thesis is from the scientific project of railway department " experiment and application research of railway preflex composite beam " and summarizes the design information and practical projects on preflex composite beam. on the basis of above works, this thesis improves computation method in analysis of railway preflex composite beam on sectional stress, deflection of mid - span, crack width and shearing resistance and programs a software " preflex composite beam bridge structure analysis system - pfsas ", which is adapt to railway bridges in our country. moreover it makes a primary research in construction techniques and structure measures
為了迅速促進預彎組合梁在我國鐵路橋梁中的發展，合理地進行我國鐵路預彎組合梁橋的設計和施工，本文結合鐵道部科技研究開發項目「鐵路預彎組合梁的實驗與應用研究」 ，在總結以往對預彎組合梁力學性能研究成果及實際工程的基礎上，完善了鐵路預彎組合梁的截面應力、跨中撓度、裂縫寬度和抗剪分析的計算方法；編制了適用於我國鐵路橋梁的「預彎組合梁橋結構分析系統? ? pfsas 」軟體；並對預彎組合梁的施工工藝及構造措施進行了初步探索。Cbsa ( curved box girder structural analysis ) is programmed by this method in the environment of visual basic 6. 0 and it has friendly interface and visual forms for data input. it can analyze the loads including deadweight, prestressing force and temperature in curved box girder, output influence lines and load dynamically to calculate deformation and internal force
該程序採用visualbasic6 . 0編寫，具有友好的界面，可視化的數據輸入窗口，可以對彎箱梁橋的自重、預應力及溫度荷載等進行分析，並可輸出影響線，對彎梁進行動態加載，求解活載內力及變形。On the other hand, though there are a great deal experimental studies on flexural bearing capacity of rc members strengthened with frp, whereas most of the test members are normal ones, so there is a great difference with the actual structural members
另一方面，雖然國內外有大量對纖維材料加固鋼筋混凝土梁后抗彎承載力的試驗研究，但這些研究大多是對完好試件（極少部分是預裂梁）加固后進行研究，這與實際差別較大。分享友人