預加拉力 的英文怎麼說
中文拼音 [yùjiālālì]
預加拉力
英文
pre-tensioning-
Based on the destructive test of certain old pre - stressed concrete hollow slab after structural strengthening by cfs, the destructive mechanism and ultimate bearing capacity of old pre - stressed hollow slab after structural strengthening is being researched, which is useful for the strengthening design of old bridge and solvating of single slab problem
摘要通過某已使用10年的舊橋預應力混凝土空心板受拉區碳纖維布加固后的破壞荷載試驗研究，對受拉區加固后的舊橋預應力混凝土空心板的破壞機理、變形性能及極限承載能力等進行了研究，為舊橋預應力混凝土空心板的加固設計及單板受力問題的分析解決提供了試驗依據。Specification for hot rolled and hot rolled and processed high tensile alloy steel bars for the prestressing of concrete
混凝土預加應力用熱軋和熱軋並處理的高抗拉強度的合金鋼筋規范When, in the deathlike stillness of the study, he sat with his elbows on the dusty writing - table of his deceased friend, there passed in calm and significant succession before his mental vision the impressions of the last few days, especially of the battle of borodino, and of that overwhelming sense of his own pettiness and falsity in comparison with the truth and simplicity and force of that class of men, who were mentally referred to by him as they. when gerasim roused him from his reverie, the idea occurred to pierre that he would take part in the defence of moscow by the people, which was, he knew, expected
當他在書齋死一般的沉寂里，用臂肘支撐身體靠著塵封的死者的寫字臺坐著時，腦子里平靜地意味深長地閃現出一幕接一幕的近日的回憶，尤其是波羅底諾戰役的回憶，尤其是他已銘刻在心的名為他們的那一類人，與他們的真理純樸和實力相比，他無可奈何地感到自己的渺小的虛假。當格拉西姆把他從沉思中喚醒時，他想起了他要去參加預定的如他所知的民眾保衛莫斯科的戰斗。Inner force on strengthening concrete statically indeterminate beams prestressed with localized tendons
局部張拉預應力筋加固混凝土超靜定梁的內力計算Test technique of acoustic excitation presented in this paper can discriminate if the adhesive structure is intensional enough to endure certainty draw strength, through a series of process, for example bringing draw strength to bear on adhesive structure. testing signal through microphone array, choosing signal ' s character, recognizing automatically through manual nerve network, and so on
本文介紹的粘接構件聲激勵檢測方法，通過對粘結結構施加微力、陣列傳聲器檢測信號、信號的特徵提取、人工神經網路的分類識別等一系列過程，完成了粘接結構承受拉脫力合格與否的無損預報。( 2 ) the crack load increases with the increase of the amount of the prestressing steel or the tensioning stress
（ 2 ）預應力筋用量的增加、張拉控制應力的增大使預應力框架梁、柱的開裂荷載提高。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。Introduced by prestressed pier in the gate of spillway in xiao xia hydroelectric power station, the text reasonably established 3 - d finite elements mechanic model by the advanced finite elements popular in the world which can expediently impose tension of anchor funicular at its place. it also considered possible diversified combination of loading, and indicated that the effect of its prestressed action is fruitful compared with its conventional counterpart by study of mechanic calculation in comparison. as a result, it vastly improved burdening state of pier. by analysis of 3 - d finite element method, it also gained the stress result indifferent boundary conditions such as breast wall joint support and fixed support, and the displacement result in diversified loading combination. those results gained the instructive and reference value in design of prestressed pier
本文結合黃河小峽水電站泄洪閘預應力閘墩這一工程實踐，採用國際上已成熟的有限元方法，合理地建立了預應力閘墩的三維有限元模型，該模型可方便地按預應力錨索的點位施加錨索預張拉力，考慮了可能發生的多種荷載工況組合，並與無預應力閘墩結構進行了對比分析研究，指出其預應力效果是明顯的，可以大大改善閘墩結構的受力狀態，通過三維有限元分析，還得到了胸墻簡支、固端不同情況下的應力成果和各荷載下的位移成果，這些成果的取得對預應力閘墩的設計具有一定的指導和參考價值。The new construction technique applied to the huge steel boxed cofferdam for foundation of pylon pier no. 2 of wuhan tianxingzhou changjiang river rail - cum - road bridge was to fabricate the cofferdam in integrity in workshop, shift it down to river and float it to the pier site where it is then accurately positioned by pre - tensioning at the anchor pier
摘要武漢天興洲公鐵兩用長江大橋2號主塔墩基礎大型鋼吊箱圍堰採用工廠整體製造，下河浮運至墩位，利用錨墩施加預拉力精確定位的施工新工藝。However, there also exist more unsuitable behaviour and thinking : the fitting degree is small and low ; the expectation about future isn " t stable and uncertain, their psychological pressure is great ; contingency comes into being, farmers can " t be sure of the happenings, they have to follow others and think they were living happily in the old days an d now they aren " t ; cultural collision is great, they feel hard to follow the change of time ; the system is changing. their living pressure is large ; the felling of living on the edge is obvious with the emergence of gap of the rich and the poor ; they feel the human feeling is disappearing and become alone in the competing
但在經濟體制改革中，農民表現出的不適應性行為與心理更多，既：對市場經濟改革的適應程度比較低；預期不確定、不穩定，農民心理負擔加重；偶然性出現，農民難以準確把握未來，懷舊、從眾行為與心理難以避免；多元文化沖突加劇，農民心理適應難度大；體制轉換，農民生存壓力增大；窮富差距拉大，農民邊緣感增強；競爭加劇，農民人情淡漠感、孤獨失落感加大等。Combined with the full scale models tested in - situ of prestressed concrete penstock with double circle unbonded strands and single circle bonded strands of xiaolangdi multipurpose dam project of yellow river, the advantages and disadvantages of two different prestressed systems are analyzed, the concrete stress distributions of the prestressed concrete penstock are induced and summarized during the whole tensioning strands stage. the consistence among the test results, the theory calculating and the three dimensional finite element analysis is proved. therefore, the theoretical method of prestressed concrete penstock is feasible
結合黃河小浪底水利樞紐工程在施工現場進行的採用雙層雙圈環形無粘結預應力鋼絞線和單圈有粘結預應力鋼絞線對排沙洞襯砌混凝土施加預應力的1 ： 1模型試驗，對比分析了兩種后張預應力施工體系的優劣，歸納總結了預應力筋束張拉過程中預應力混凝土壓力管道結構管壁混凝土的內力分佈規律，驗證了模型試驗實測數據、理論計算和三維有限元分析結果的一致性，確定了預應力混凝土壓力管道理論計算方法的可行性。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。Using the general finite element programming package of ansys10. 0, the study of gabled frames beam - column end - plate connections is made, considering synthetically nonlinear ( material, geometry and contact ), bolt pretension forces and ratio of axial compression stress to strength. elastic - plastic finite element analyses are carried out among 28 species of 3 series under monotonic loads, in order to discuss the influence of parameters including stiffness of end - plate, bolt diameter, friction coefficients and so on
本文使用通用有限元軟體ansys10 . 0綜合考慮了三重非線性（材料非線性、幾何非線性以及狀態非線性）的影響，同時考慮了螺栓預拉力的影響，對考慮端板厚度、端板加勁肋的設置、螺栓直徑、摩擦系數等參數不同的3個系列（端板系列，螺栓直徑系列，摩擦系數系列） 28個試件進行了有限元數值模擬，對連接節點的性能進行了分析研究。On the other hand, for the pre - press stress being threw by the hub was inserted after cooling with liquid nitrogen, the poor transverse tension strength of the multi - ring flywheel rotor could be counteracted. so the rotate speed and energy storage density can be increased efficiently
而採用多環套裝纏繞技術製造的多層飛輪輪環，在利用溫差過盈裝配方法給復合材料輪環施加預壓應力后，能夠有效避免飛輪轉子的復合材料輪環部分因較低的纖維橫向抗拉強度而破壞失效，從而大幅度提高飛輪轉子的極限轉速和儲能密度。The former model of staged loading and staged optimization is improved, in which the value range of pre - stress restrict in restrict equation. it provides the theoretical base for the loading time of multi - pre - stress and the value of pre - stress. and examples analyzed with linear programming and full - constrained methods prove the convergence effect well
論文在單次預應力鋼結構的優化模型的基礎上，建立了多次預應力鋼結構的優化模型，將原有的分級加載，分級優化的模型加以改進，在優化模型中將約束方程中的預拉力約束的取值范圍擴大，使得多次預應力的施加次數、施加預拉力的數值大小的確定有了理論根據，並利用線性規劃和滿約束結合的方法進行求解，通過算例分析，收斂效果較好。Secondly, the producing mechanism of crack in reinforced structure and factors which affect crack have been discussed, in the emphasis, the method is expounded, which applies first releasing then resisting, combination of releasing and resisting. in the method, flexible slit is applied firstly, which can make deformation of structure distributed, and decrease deformation energy, then the tiny expansion concrete and prestressed concrete with unbonded tendons are applied. and in the different phase, the compressive prestress is put on the concrete structure
其次，分析並論述了鋼筋混凝土結構裂縫產生的機理和影響因素，著重闡述了「利用先放后抗，抗放結合，綜合控制」的方法：即首先利用后澆帶，使混凝土結構分段變形，減小超長變形的影響；並採用微膨脹混凝土技術及無粘結預應力混凝土技術，分階段對混凝土結構施加一定的預壓應力，從而減小或完全抵消混凝土結構因混凝土硬化收縮引起的拉應力；再結合一些其他措施，成功實現鋼筋混凝土結構的超長無縫設計與施工。Windmills have far bigger than expected potential for generating electricity in the third world, according to new u. n. wind maps of countries from china to nicaragua
聯合國日前公布的新的風能分布圖顯示，包括中國和尼加拉瓜在內的廣大發展中國家應用風力發電的潛力大大超出以往預計。This paper studied the warp and stiffness of end - plate connection, and studied how the actual stiffness of end - plate connection influence stiff frame ' s displacement, and some design improvements are proposed. a methodology based on finite element modeling is used to establish strong bolted end - plate connection calculation model, and solved the interface between end - plates question and how to add bolt pretension when imitating end - plate connection ' s elastic material characteristic. through analyzing and comparing calculation results and experiment data, this paper summarized bolt force distribution, connection moment resistance, moment - rotation relationship and connection stiffness
筆者採用有限元方法，建立高強螺栓端板連接的計算模型，模擬了節點彈性階段的工作狀態，較好的解決了高強螺栓端板連接中的接觸面問題和螺栓預拉力的施加問題，通過對計算結果的分析以及與實驗數據的比較，總結出端板連接在彎矩作用下的螺栓拉力分佈規律、節點抗彎承載力及其影響因素，以及節點剛度特性及其對剛架性能的影響，同時，對端板連接受力變形性能也做了十分有益的分析，為輕鋼節點設計方法的改進提供了依據。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。Studies show that simply adopting multi - compound supporting is far from enough to control strong non - lineal deformation, meanwhile measures must be taken to harness the weakening course caused by fracture water
針對此情況，提出了動態過程式控制制的支護原理，採用預拉力錨桿、錨索、桁架和圍巖滯后注漿堵水加固相結合的全過程式控制制圍巖技術。分享友人