變周期加載 的英文怎麼說
中文拼音 [biànzhōuqījiāzǎi]
變周期加載
英文
variable-cycle loading-
A group of calculated results is obtained when the train goes ahead a distance steps. thus, the results in a period are obtained. in addition, the local stress analysis and the shape optimization of locking hooks are done
對于每種載荷情況計算都按照準靜態問題進行分析，不考慮結構的加速度，只考慮載荷作用點（火車車輪）的變化，列車每前進一段距離計算一個受力工況，得到一組數據，得到了一個周期的計算結果。Under the horizontal earthquake action and wind force, aim at " the pure frame structure with rectangle columns ", " the pure frame structure with special - shaped columns ", " the frame - truss structure with special - shaped columns " and " frame - shear wall structure with special - shaped columns ", earthquake action analysis was done by the spacial finite element method through the changes structural parameter. analyzing systematically " structure vibration mode ", " vibration period ", " structure lateral rigidity ", " seismic action force ", " seismic response force ", " floor seismic shear force ", " lateral horizontal displacement of structure " and " members internal force ". results indicate : ( 1 ) based on equal area, the special - shaped columns replaced the rectangle columns, the structural lateral rigidity enlarges, the lateral displacement minishes obviously, the earthquake response increase slightly, the biggest increasing amount of frame columns axis - compress ratio is smaller than 0. 08. the whole aseismic performance of structure has improved ; ( 2 ) when the section ' s length and section ' s thickness ratio of special - shaped columns is smaller than 3. 6, the structure benefits to resist seismic action ; ( 3 ) the angle of horizontal seismic action with the whole coordinate is 0 degree, structure earthquake response is bigger, belonging to a control factor of structure aseismic design ; ( 4 ) the frame - truss structure with special - shaped columns and the " a " - brace has the biggest lateral rigidity ; ( 5 ) the frame - shear wall structure with special - shaped columns have bigger lateral rigidity and smaller displacement, members internal force enlarged just rightly, have much superiority of resisting seismic action ; ( 6 ) in the higher seismic fortification criterion region ( 8 degree of seismic fortification intensity ), aseismic disadvantageous building site ( iii type site ), adopting special - shaped columns structure system, should reduce possibly the building ' s self - weight in order to reduce the earthquake response ; ( 7 ) the response spectrum method of computing seismic response and the time - history analysis method have similar analysis result
西安理工大學碩士學位論文在水平地震作用下，並考慮風荷載組合，分別對「矩形柱純框架結構」 、 「異型柱純框架結構」 、 「異型柱框一析架結構」及「異型柱框-剪結構」等四種結構體系，通過改變結構參數，運用空間有限元方法，進行地震作用計算。系統地分析研究「結構振型」 、 「振動周期」 、 「結構側向剛度」 、 「結構地震反應力」 、 「樓層地震剪力」 、 「結構側向位移」 、 「層間位移角」 ，以及「構件內力」 。結果表明:在等面積原則下，異型柱代換矩形柱后，結構剛度增大，側向位移明顯減小，地震反應力略有增加，框架柱軸壓比最大增幅小於8 % ，結構整體抗震性能有所提高;當異型柱肢長肢厚比小於等於3 . 6時，結構有利於抗震;水平地震作用力與整體坐標夾角為0度時，結構地震作用效應較大，屬結構設計的控制因素之一;異型柱框一析架結構採用「人」字斜撐，側向剛度大於「八」字斜撐和「人一八」字混合斜撐;異型柱框一剪結構側向剛度大、位移小，構件內力增大適中，是一種抗震性能優越的結構體系:在抗震設防烈度較高地區（ 8度）和抗震不利的建築場地（ m類場地） ，採用異型柱結構體系時，應盡可能減輕結構自重，降低地震作用力;分別採用「振型分解反應譜」法和「時程分析」法進行地震作用計算，兩種方法所得結果基本一致。Abstract : in the light of the problems of high power consumption and low working efficiency in a beam pumping unit, a new method for power saving of the unit is proposed, that is, adopting an optimum structure of the unit and decreasing the periodic load coefficient of the pumping unit by changing the performance characteristics of the electric motor and by increasing the rotary inertia of the unit
文摘:針對游梁式抽油機能耗大，工作效率低的問題，提出遊梁式抽油機節能的新方法，即在採用優化抽油機結構的基礎上，通過改變電動機的工作特性和增加抽油機轉動慣量的辦法降低抽油機周期載荷系數。In this thesis, a series of single and double - direction - load tests are carried on the single plate framing connection between truss - steel beam and concrete wall often used in tall - building. by single - direction - load tests, the flexure capacity of the joints in use of different design is researched in particular, the effect of bolt design on the flexure capability is analysised ; based on the cyclic loading experiment, such characteristics of the anchors are analyzed -. bearing capacity. rigidity, ductility, hystersity capacity, energy dissipation and failure phenomena
通過單向靜力試驗，研究了單剪板連接的不同設計對鋼架梁的約束能力的變化，重點討論了螺栓的設計對約束能力的影響；通過周期性反復加載試驗研究了不同設計的單剪板連接預埋件的抗震性能的不同，重點分析了結構的承載能力、剛度、延性、滯回性能、耗能能力及其破壞特徵等。分享友人