裂變截面 的英文怎麼說

中文拼音 [lièbiànjiémiàn]
裂變截面 英文
fission cross section
  • 裂 : 裂動詞[方言] （東西的兩部分向兩旁分開） open
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 裂變 : [核物理] atomic fission; fission; nuclear fission
  1. The paper studied tests on three epiboly profiled bar concrete beams, bearing capacity of normal section, stiffness and behavior of cracks, and put forward formulas as advise. based on extant nonlinear concrete theory, a fem model was built by ansys program. the results of fem analysis was verified by tests data. some parameters in fem model were changed to build different models and the analysis results were compared with the advised formulas

    本文通過三根外包型鋼混凝土梁試驗，研究了其正截面承載能力、剛度以及裂縫方面的性質，並提出了一些相關建議公式。同時在現有混凝土非線性分析理論的基礎上，採用ansys有限元分析程序建立了外包型鋼混凝土梁的有限元模型，結合試驗數據對模型進行了驗證，另外還改變了一些參數建立了有限元模型，並和建議公式的結果進行了對比。
  2. Here the hsc of sompa is achieved through adding super - effective water reducer, fined slag and silicon fume, and decreasing the water / cement ratio. by varying the area ( spacing ) of tension bars, compressive bars, vertical links and distribution steel and embedding steel fiber and polypropylene fiber we try to improve the behaviors of reinforced high performance concrete one - way spanning slabs in bending, so that its ductility be greater than 5. with the same arrangement of steel the width of bending member is varied to observe the effect of the width / depth ratio on the ultimate compressive strain of concrete

    通過變化受拉筋含筋率和受壓筋、箍筋（鉤筋、分佈筋）含量，或摻加纖維使之成為鋼纖維高強混凝土（ sfrhsc ）和聚丙烯纖維高強混凝土（ pfrhsc ） ，對高強混凝土雙筋截面梁、板的受彎性能進行了試驗研究，試圖改善高強混凝土受彎構件的延性，使其延性比大於5 ；並在相同配筋情況下，通過變化截面寬度，研究了高強混凝土受彎構件的寬高比對壓區混凝土極限應變的影響；並對試驗構件的裂縫發展情況進行了觀測。
  3. 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。
  4. Based on the experiment results, the damage form of abnormal exterior joint are summarized, characteristics of hysteresis curve are studied, the effect of stirrup ratio and height of column section and beam section on anti - shear property of abnormal joint are discussed, working mechanism of abnormal exterior joint is researched, the conclusion that the anti - crack and bearing capacity of abnormal joint are studied by analyzing the minor core of abnormal exterior joint is proposed, the basic data is provided for the design formula of abnormal joints

    根據試驗結果，總結了異型邊節點的破壞形態，研究了節點滯回曲線的特徵，討論了節點核芯配箍率、樑柱截面高度變化對異型邊節點抗剪性能的影響，分析了異型邊節點的受力機理，提出應以「小核芯」為分析單元來研究此類節點抗裂和承載力的建議，為異型節點設計公式的建立提供了基礎數據。
  5. Based on the pseudo - static experimental results of nine abnormal joints, the damage process of abnormal joint is divided into four stages of original crack, entire crack, ultimate state and failure, the effect of axial force ratio, stirrup ratio and height of column section on seismic behavior of abnormal joint are discussed, the conclusion that anti - shear capacity of abnormal joint are studied in entire crack state by studying the minor core of abnormal joint is made, the calculating formula for anti - shear capacity of abnormal joint is proposed with a view to asymmetry in stirrup yield

    摘要根據9個鋼筋混凝土框架異型節點試件的擬靜力試驗結果，指出異型節點受力過程分為初裂、通裂、極限和破壞4個階段；討論了軸壓比、節點核芯配箍率、柱截面高度變化對異型節點抗剪性能的影響；提出應考慮節點核芯區箍筋屈服的不均勻性並在通裂狀態下以「小核芯」為分析單元來研究此類節點抗剪承載力的建議；最終給出了異型節點抗剪承載力的計算公式。
  6. The bisonc burnup library is replaced to facilitate the computation of the burnup process with complicated burnup chains. we have made and evaluated the new library ( hendl ) which contains 139 kinds of nuclides with 175 groups for neutron and 42 groups for gamma, 15 kinds of neutron reactions and p0 - p5 expansion. the revised code which we call bus - id is more adaptable to the computation of hybrid reactor for its fuel breeding and the transmutation of the hlw

    並且在一維輸運及燃耗計算程序bisonc的基礎上，提出用新的數據庫（ hendl ）代替原有的bisonc數據庫， hendl庫考慮了更加全面的燃耗過程和多種燃料循環方式，通過修正讀入的核截面數據庫中的參數，考慮共振自屏效應，製作並且評估了新的含有139種核素、多種反應截面、 175群中子42群光子、 p _ 0 - p _ 5展開的中子反應數據庫，開發出新的程序bus - 1d ，使得更能適應聚變?裂變混合堆的燃料增殖、高放長壽命核廢料（ hlw ）的嬗變等計算的要求。
  7. The prime works are as follows : strain and stress distribution of section was analyzed. the effect of prestress degree. on cracking moment was explored. the relation of the unbonded prestress increment to effective reinforcement index and corresponding bonded prestress increment were studied. the formulae had been established

    其次，設計了三根活性粉末混凝土無粘結預應力疊合梁，兩點對稱集中加載、一次受力，得到了它們的截面應變分佈、撓度與變形、無粘結預應力鋼絞線的預應力增量、裂縫的發展與分佈以及極限荷載。
  8. Specimens ’ cracking load under dead - load, fatigue failure characteristic, fatigue life, deflection of span - centre, fatigue flexural rigidity, maximal crack width, development of cracks and strain of concrete and steel bars have been investigated. the influence of fatigue cycle characteristic, ratio of reinforcement, kinds of aggregate and concrete compressive strength on the specimens ’ fatigue behavior has been also investigated

    對試件的靜載下開裂荷載、疲勞破壞特徵、疲勞壽命、疲勞荷載作用下的跨中撓度、截面疲勞抗彎剛度、裂縫開展情況及最大裂縫寬度、鋼筋及混凝土在循環荷載作用下應變等內容進行了研究，分析了疲勞循環特徵值、縱筋配筋率、骨料種類、混凝土抗壓強度等因素對試件疲勞性能的影響。
  9. The effect of detector disturb and the shell of the detector and construction material is not distinct. the low absorb cross section material is used to 235u - fission chamber. the low z material is used in experimental bracket and shielding material and the material is used less

    獲得了探測器之間擾動、探測器外殼、支架材料對信號中子測量無明顯影響的結果；對~ （ 235 ） u裂變電離室，需採用中子吸收截面低的材料，對實驗裝置的支撐材料和屏蔽材料宜選用低z材料且盡量減少用材。
  10. It is proved that the stability of rock mass high slope is mostly affected by lots of discontinuous structural faces like joints and faults, etc. it makes the rock mass be different from intact rocks completely in mechanical properties. so it is necessary for us to do some research on the deformation failure mechanism, and accordingly, we should do some research on the evolvement course and evaluation methods of stability about rock mass high slope

    工程實踐證明，節理巖體高邊坡的穩定性取決于邊坡中的不連續結構面，如節理、裂隙、軟弱面和不同巖層的分界面，這類結構面的存在使巖體變形破壞的特性與完整巖石截然不同，因此，有必要加強對節理巖體高邊坡變形破壞機制的研究及相應的節理巖體高邊坡穩定性評價方法的研究。
  11. Nonlinear constitutive relations are discussed for analyzing the stress distribution, the appearance and development of the cracks, as well as the behavior of the boundary conditions of the two way slabs respectively. in the light of the experimental research on r. c. two way slabs under static loading, the behavior of yield line, the load deformation curves and the crack yield, plastic limit loads of slabs with different supporting conditions are studied

    根據反映雙向板混凝土材料非勻質性的本構關系，分析了雙向板在荷載作用下的變形、屈服、裂縫和破壞的形態特性，並對鋼筋混凝土雙向板在不同支承條件下的塑性極限荷載、正常使用撓度（曲線）和截面設計作了進一步研究。
  12. In this paper we discuss the minimum norm control problems of nuclear reactor systems governed by the monoenergetic steady - state isotropic transport equation

    摘要討論核反應堆系統散射裂變截面的最小范數控制問題。
  13. Under the given condition, we have proved the existence and uniqueness of the minimum norm scattering - fission cross section control element, and have given its corresponding optimality conditions

    在一定條件下證明了最小范數散射裂變截面控制變量的存在性和唯一性，並給出其相應的優化條件。
  14. The paper build a plane model of the whole bridge based on the fem, and analyze the internal force and structural displacement changes in every damage circumstance. the data reflect that the damages in arch rib in the tip will make internal force of some sections increased, accordingly the stability and the durability of the structure reduce ; the damages in the arch foot will change the structure system ; and the displacements of abutments will develop great accessional internal force, and deform the main arch and even crack, accordingly change the system of the structure

    論文建立了全橋的平面有限元模型，分析了在各種病害情況下全橋的內力及結構位移的變化，計算數據反映了，拱頂拱肋損傷會造成某些截面的內力增大，結構的穩定性和耐久性降低；拱腳損傷可能引起結構體系改變；墩臺位移會使上部結構產生較大的附加內力，使拱圈變形甚至於開裂，從而導致結構的受力體系發生改變等。
  15. Third, c80 high - strength concrete is used in the test beams. finally, to increase the ductility of the test beams after the crack of mid - support, steel fiber reinforced concrete is used in the mid - support zone. as part of the whole research project, several works have been undertaken in this dissert8tion

    本課題主要突出以下特點： （ 1 ）結構模型為兩跨變截面箱型連續梁； （ 2 ）部分預應力體系作為研究重點； （ 3 ）梁體採用c80高強混凝土； （ 4 ）為了增加結構在中支座開裂后的延性，在連續梁的中支座區段採用與梁體其它部分同標號的鋼纖維混凝土。
  16. In the end, the author used fem to analyze the short - period stiffness after rc cellular slab cracking, and presented recommended formulation in respect of short - period stiffness. moreover, with regard to the features of bi - direction cellular slab, the author brought forward the equivalent cross - section stiffness model to calculate the ultimate load - carrying capacity of variable cross - section slab as well as the related reinforcement suggestions and conformation methods

    最後本文利用有限元分析了鋼筋混凝土空腹板在開裂后的短期剛度，並給出計算其短期剛度的建議公式；另外針對雙向空腹板的特點，本文提出了對這種變截面板進行承載力計算的「等效截面剛度法」模型，並給出了相關的配筋建議及構造措施。
  17. The tower shafts, most of which are hollow and varying in cross section, and altitudinal construction bring trouble to the form work and the stress of strand wire. and the cracks on the crossbeams will be caused by the following - deformation of the bracing structure joints, elastic deformation ， uneven settlement and temperature changes. the additional stress of the base slab and the foundation is caused by the deviation of cable bent tower construction

    但大跨度橋梁混凝土索塔施工設備進場及現場管理都比較困難；塔柱多為空心變截面，且為高空作業，給模板工程及預應力張拉帶來一定困難；支撐系統連接的間隙變形、彈性變形、不均勻沉降以及環境溫差可導致橫梁裂縫；索塔施工偏位會引起的承臺和基礎的附加應力，對加勁梁的架設影響大；懸吊結構未完體系（架設時）施工階段的風致振動往往影響到施工的安全和質量；實心塔柱部分體積較大，易產生溫度裂縫。
  18. The researches show that the vertical cracks on the surfaces paralleled to water flow of thin - walled flexible piers may be induced by the large shear stresses at the faceoffs in the cross - section near the bearing and the variable cross - section of the pier

    研究表明，墩身在平行於水流方向的兩側面上的豎向裂縫，可能是由於墩身在底部和中間變截面處的倒角附近區域產生較大剪應力而引起的。
  19. The project is completed in the collaboration of the transportation college of jilin university and transportation science institute in jilin province. the paper mainly studies the characteristics and mechanical performance of small size member of bridge, the problems of concrete dense degree and shear lag effect of wide flange. the static load test and supersonic nondestructive test of four pieces of prestressed i - girder with varying section are carried out in bridge structure laboratory of jilin university

    本文針對橋梁構件局部尺寸較小部位的混凝土密實度問題，進行了2片腹板寬度為14cm ， 2片腹板寬度為16cm的變截面預應力工字梁的靜載試驗和超聲無損檢測試驗，提出密實度系數的概念，對試驗梁的密實度進行定量評定，推導了工字梁的塑性系數公式，基於塑性理論給出了試驗梁的開裂荷載和極限承載能力計算公式，分析了試驗梁的密實度對其開裂荷載和極限承載能力的影響。
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