震動法 的英文怎麼說
中文拼音 [zhèndòngfǎ]
震動法
英文
lash method-
The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed
較好地解決多阻尼比反應譜擬合問題;本文方法通過一次運行就能獲得一組具有集系特性的地震動,在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢,產生的人造波或人造波集系可滿足工程抗震設計需要;在遺傳演算法中,交叉概率和變異概率是影響收斂速度的重要參數,本文採用的改進自適應交叉概率和變異概率,可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率,以保證演算法始終以較好的速度向pareto最優解集逼近。Cries in exultation of the well-known good physician rent the hall of the count.
為了這著名的好醫生而歡呼的聲音震動了法庭大廳。Harm of the seism vibration in the high - building blasting demolition and method of damping vibration
爆破拆除高大建築物產生的震動危害與減震方法We use the earthquake situation trichotomy method to deal with the datum of small earthquakes in huabei region, the result shows, the relativity between group seismic precursor informaitons and large earthquakes is rifeness phenomenon of large area, the shake of large earthquakes are globality, the remote correlation of shake are globality
採用「震情三分律」的方法處理了華北地區小震活動的數據,分析認為成組震兆的出現與大震之間的遙聯性絕不只是一種小區域性的現象,而是一種大范圍的普遍現象,大地震是全球性的震動,其震動遙聯性的顯示,就必然是跨越全球性的。Based on seismic wave method, borehole acoustic method and indoor rock mechanics test, the dynamic and static parameters of the foundation rock for the toe slab of the concrete face rockfill dam for shuibuya hydropower station are tested, and then the relationship among the rock quality, dynamic parameter and static parameter are established with the parameters obtained from the test, furthermore, the classification and the quality evaluation are made as well
摘要採用地震波法、鉆孔聲波法以及室內巖石力學試驗法,對水布埡水電站面板壩趾板建基巖體進行了動、靜參數測試,並根據所獲的參數建立了巖體質量、巖體動力學和靜力學參數三者之間的相關關系,對工程巖體進行了質量分級和質量評價。The article discusses the strength analytical method of soil body dynamic stability apply to evaluate foundation liquescence of embankment dam combine with shock liquescence of dam foundation blanket sand layer about hada mountain project
本文結合哈達山工程設計中壩基沖積砂層的震動液化問題,探討了土體動力穩定性的強度分析方法在評價土壩壩基液化中的應用。In this paper, two key strategies in earthquake risk assessment and risk management for urban areas are studied. one is ground motion based vulnerability evaluation method for buildings which needs to be solved urgently in earthquake risk assessment in china. the other one is financial instruments, such as insurance, reinsurance and catastrophe bonds ( cat bonds in brief ), combined with engineering earthquake risk evaluation which must be faced in earthquake risk management after china entered wto
本文集中研究了地震風險評估和風險管理中的兩個重要問題,一個是當前地震風險評估中急需解決的,基於地震動參數的房屋建築易損性評估方法;另一個是我國加入wto以後地震風險管理必然會面臨的,與工程地震風險評估密切結合的地震保險、再保險和巨災債券等金融手段。The inconsistent excitation can be decomposed into a series of irregular incident waves in terms of the spectral decomposition scheme of the hermitian matrix, with which the coherency function of the ground motions under the inconsistent excitation can be obtained numerical results are given to show its stability and rationality
該方法將隨機輸入下的波動分析問題轉換為多個虛擬激勵下的確定性波動分析組合問題,從而可以方便地獲得場地波動觀測量之間的譜密度矩陣,進而計算給出工程場地的地震動相干函數本文還用數值模擬的辦法對所提出方法的合理性和穩定性進行了探討。The optimum balancing of a four bar linkage with elastic links is studied, in which the control torque of redundant drives is taken as the design variable, and the shaking force and shaking moment of the mechanism are taken as the objective. the numerical simulation shows validity of the method
針對一平面彈性四連桿機構,以其震動力和震動力矩的加權和為目標函數,以冗餘驅動力矩為變量,對附加冗餘驅動的彈性機構進行最優平衡,其模擬結果表明該方法是有效的。The multi - point effect with input of the artificial earthquake acceleration simulated by interpolation method is weaker than that of the directly simulated acceleration
用內差法合成的地震動輸入情況下多點效應弱一些,但仍能體現多點效應。Based on newmark ' s step - by - step implicit integration method, the response analyses of a tunnel are performed by using viscous - spring artificial boundary under various earthquake accelerations and multiform conditions of surround rock. the seismic responses of the tunnel are calculated by changing parameters of surround rock within the tunnel some ranges. two kinds of shock absorption measures, which are setting shock layer and reinforcing surround rock are studied and shock absorption effects, applicable to cases and shock mechanism are analyze
4計算了不同地震動作用下不同的圍巖材料對隧道地震反應的影響,並通過改變隧道襯砌一定范圍內圍巖材料的參數,計算了隧道的地震反應,分析了在隧道施工中設置減震層和注漿加固一定范圍內圍巖這兩種方法的減震效果、適用條件及其減震機理。The precious method to simulate earthquake accelerations is not perfect because the points on the interface still move according to the simulated acceleration when the points " motion ends, which is obviously a paradox. if the points " velocity is not zeroized, soil ' s damage value based on shear stress ' s peaks or extrema is overestimated in multi - point input analysis. the new method ' s rationality is analyzed
以往人工合成的地震波在地震結束時即地震加速度恆為零時速度不為零,這與合成地震動是「模擬輸入點從靜止到運動再到靜止的運動過程」這一要求不一致,同時導致時域內多點輸入分析時差動力過大以至算出的損傷值過大,於是本文提出了簡易的地震動速度歸零化方法並分析了其合理性。We attempted to advance the certainty method based on the background value of earthquake ground motion ' s parameters, combined the probability seismic risk analysis and certainty seismic risk analysis to study the characteristics of earthquake ground motion ' s parameters in jianghuai region which is medium - strong earthquakes ' transition region, and protracted the calculating background values of earthquake ground motion ' s parameters to plane equivalence value maps and solid equivalence value maps
摘要嘗試性地提出了基於地震動參數背景值的確定性方法,將概率性地震危險性分析和確定性地震危險性分析相結合,對江淮地區這一中強震過渡區的地震動參數特徵進行了研究,並把地震動參數背景值的計算結果繪製成平面等值線圖和立體等高線圖。Such method is used to discuss seismic dynamic reliability of xiang - jia - ba dam including its elements and whole slide - resistant stability
結合驗算點法和反應譜法,建立了三維重力壩的地震動力可靠性分析方法,並將其應用到向家壩泄水壩段的地震動力可靠性分析中。Yuanmingyuan ( garden of perfect splendor ) was razed to the ground by the anglo - french allied forces in 1860 and xian feng the emperor was imprisoned
摘要咸豐十年( 1860 )英法聯軍攻入北京併火燒圓明園,致皇帝北狩,天下震動。A chemical explosion rocked the riverfront, a few miles south of the french quarter, sending flames shooting into the sky
一個化學爆炸震動了河邊地區,離法裔居住區幾英里遠,爆炸火焰直沖向天空。Several key techniques of carving and milling machine cnc system are deeply studied they include : the transformation, data rebuild and interface design of huge volume nc program produced by cam ; the algorithm of cubic parametric spline pre _ interpolation and high speed real time interpolation in the cnc system, which. will gain a much higher surface precision and cutting speed ; methodology and algorithm of movement velocity acceleration control on a real time forecast _ and _ prejudge basis is designed. therefore, a smooth movement is insured. the shake and noise problem caused by non _ uniform pules for driving stepping or servo motor is solved by an improving algorithm to generate uniform pules
同時,本文對基於統一的pc平臺的雕銑機數控系統中的幾項關鍵技術進行了深入的研究,包括: cam生成加工程序的傳送、接收、讀取及其加工鏈表的生成和實時重構;對cam生成的離散數據進行三次參數樣條插值和基於累加弦長的三次參數樣條插補控制,保證加工工件表面的精度和光順性;設計具有「前瞻」功能的自動升降速控制方法,保證加工過程的平穩性;通過脈沖均勻化,有效地解決加工過程中因為脈沖不均勻而引起的震動問題。Based on the mathematical model for analyzing the seismic responses of submerged tunnels proposed by choshiro tamura and shunzo okamoto, the analytical model for calculating the stochastic earthquake responses of the whole underground structure was proposed and the formulas for evaluating the stochastic characteristics of the underground structural seismic responses were derived. the dynamical mean - square responses of the nanjing changjiang tunnel under gauss stationary random process were calculated. 3
2將日本田村重四郎?岡本舜三提出的沉埋隧道地震反應分析的數學模型應用於地下結構隨機地震反應分析,利用數值分析方法建立了隧道整體隨機地震反應分析的數學模型,得到了地下結構整體隨機地震動力響應數字特徵的數學表達式,為地下結構整體隨機地震反應分析及動力可靠度的研究提供了一種分析途徑。First of all, it determines the scope in which earthquake might be genetated, the potential seismic sources areas and the upper limit of the earthquake magnitude through the analysis, research and evaluation of the area seismic geological condition of the workzone. secondly, according tothe research of the seismic activity, it also determines the seismic activity coefficients for per potential seismic sources areas, and the delay relation of seismic intensity and seismic accelaration, and then three different seismic intenstities and dynamic strength of bedroch under different probability are given. through the analysis and caculation of earthquake hazard with the analytic approach of probability
首先,對工作區的區域地震地質環境進行了分析、研究、評價,確定了萊蕪市可能發生地震的范圍、潛在震源及其震級上限等。其次,根據對地震活動性的認識,確定了各潛在震源區的地震活動性參數及萊蕪市地震烈度和地震加速度衰減關系,在此基礎上用概率分析法對萊蕪市地震危險性進行了分析計算,得到了萊蕪市在三種不同概率水平下的地震烈度和基巖地震動強度。Methods of testing plastics - mechanical properties - longitudinal and shear vibration - wave - propagation method
塑料試驗方法.第3部分:機械性能.徑向剪切震動.試驗方法323e :波傳播法分享友人