輸入的地震波 的英文怎麼說
中文拼音 [shūrùdedezhènbō]
輸入的地震波
英文
input earthquake motion- 輸 : Ⅰ動詞1 (運輸; 運送) transport; convey 2 [書面語] (捐獻) contribute money; donate 3 (失敗) l...
- 入 : Ⅰ動詞1 (進來或進去) enter 2 (參加) join; be admitted into; become a member of 3 (合乎) conf...
- 的 : 4次方是 The fourth power of 2 is direction
- 震 : Ⅰ動詞1 (震動) quake; shake; shock; vibrate 2 (情緒過分激動) be greatly excited; be deeply ast...
- 波 : Ⅰ名詞1 (波浪) wave 2 [物理學] (振動傳播的過程) wave 3 (意外變化) an unexpected turn of even...
- 輸入 : 1 (從外部送到內部) import 2 [電學] input; entry; entering; in fan; fan in; 輸入變壓器 input tra...
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And the explicit finite difference method, the combining method of the central difference method and newmark s constant average acceleration method, and the transmitting boundary are used. by comparing the acceleration determined by the several methods of the displacements or velocities, a computing method of acceleration employed the one side difference of velocity is more practicality in this research. corresponding to normal incidence of the body waves, p waves or svwaves, and rayleigh surface waves, two two - dimensional finite difference programs are compiled to compu te the dynamic response of two - phase media
以土力學模型為基礎,利用以土骨架和孔隙流體的四個位移為基本未知量的數值方法去模擬二維飽水介質中的地震波傳播,採用了顯式差分方法(中心差分法和newmark常平均加速度法結合)和透射邊界,通過比較利用幾種差分格式求解的加速度結果,發現一種用速度單邊差分求解加速度的方法在本文研究中較為實用,分別編制了體波( p波或sv波) 、 rayleigh面波輸入時求解兩相介質動力響應的兩個二維數值分析程序。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 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。Input seismic wave fields in elastic half - space interbedded by liquid - filled porous medium and solid medium
不同介質互層分佈的彈性半空間地震波場輸入This paper deals with seismic analysis of an immersed tunnel using the travelling wave method the objective of the analysis is to obtain the maximum stresses in the tunnel body and the relative displacements at the joints for design purpose in analysis , the axial and transverse input waves are treated as two independent waves with different amplitudes and periods the method has been found to have the advantages of simplicity and clearness in physical concepts however , reasonableness of the prediction by the method depends largely on the input data , such as the wave amplitude , the wave length , the propergation speed of the travelling wave as well as the reaction coefficient of the ground thus , determination of the input data is discussed in detail finally , the method is applied to analysis of huangsha - fangcun immersed tunnel across the pearl river in guangzhou
將行波法應用到剛度較大、分段較多的水下沉管隧道的地震分析中,提出把軸向、橫向兩個輸入波處理為兩個獨立的行波的方法行波法是否符合實際,與輸入地震波的有關參數及地基系數選取有很大關系,作者對此進行了比較深入的討論,使輸入參數的選取簡單、明確,便於對計算結果進行分析與判斷最後應用此法對珠江水下隧道的工程實例進行了計算Running the model with seismic data alone would have underestimated tsunami heights in the open ocean by a factor of 10 or more
若單把地震波資料輸入模型運算,會低估海嘯在開放海域的波高,預估值約只有實際值的1 / 10或更少。It can be used to create the model data file for the seismic forward modeling semi - automatically. thus, the two primary difficult problems of low efficiency and accuracy have been solved very well. 2. graphic and digital image processing technique are introduced into geological modeling, and some kinds of arithmetic are presented, based on which fast model input for ray tracing and wave equation forward modeling have been both achieved
首次建立了獨立於大型地震勘探專業軟體的開放式構造地質模型輸入系統,開發了針對于射線層狀結構模型和網格化波動方程模型的輸入軟體,大大地簡化了模型輸入的過程,極大地提高了構造地質模型的輸入效率,解決了以往模型輸入精度和效率不高的兩大難題。Firstly, the inversion of the ground motion with the unknown parameters and limited measurements was studied by the sub - structural identification, and the least - square algorithm of unknown input was built. secondly, based on the estimated input, structural parameter down to the element level was identified in time domain by extended kalman filter algorithm. several cases of a 6 - story frame s
首先,使用子結構識別技術,研究了未知參數、觀測不完整條件下的地震動輸入反演問題,建立了未知輸入的最小二乘估計演算法;其次,在估計地震動輸入的基礎上,使用廣義kalman濾波器方法,識別全部單元結構參數。The obtained results indicate that compared with the clay layer, the liquefied sand layer takes a decreasing effects on the short period component of the surface ground motion and the effects increase with increasing of the thickness 、 depth and width of the liquefied sand layer ; the liquefied sand layer takes a increasing effects on the long period component of the surface ground motion but the effect is not obviously ; to the input earthquake wave, the demarcation point of strengthens and weaken is about 0. 6s
主要結論為:和同樣的粘土層相比,液化層的存在對地表上地震動的短周期分量主要起減弱作用,且減震效果隨著液化層埋深、厚度的增加而變強;對長周期分量主要起加強作用,但是效果不太明顯;對所輸入的地震波來說加強減弱的分界點所對應周期為0 . 6s左右。Time history analysis is carries on after the seismic waves being numbered according to period, input values of seismic wave to vibration equation of system, adopt the method of progressive integral to gain the whole course of the structure ' s state at the whole earthquake
時程分析是將地震波按時段進行數值化后,輸入結構體系的振動微分方程,採用逐步積分法得出結構在整個地震時域中振動狀態的全過程。Four records with different earthquake magnitude, epicentral distance and spectrum ingredient are selected as the seismic input. the result of it compared with the result of test and spectrum analysis. lastly, on the basis of analysis result the conclusion is drawn and the recommendation and perspectives are put forward
選取了el - centro波等四條不同震級、不同震中距及頻譜成份不同的地震波作為輸入波,對其進行了反應譜分析,計算結構在其作用下的動力反應,並與試驗結果及反應譜分析結果進行對比。On the other hand, the calculation on difference earthquake wave show : the spectrum of earthquake wave will affect dynamic property of structure like long period of xiao wan dam
另外,不同性質的地震動輸入所得的計算結果表明,地震波的頻譜特性對于小灣大壩這樣的長周期結構的動力反應特別是位移反應有明顯的影響。And the effects of liquefaction sand soil on surface ground motion are investigated for considering the thickness 、 depth 、 width of the liquefied sand layer and the input earthquake wave
主要分析了飽和液化層厚度、飽和液化層埋深、土性參數和輸入地震波等因素對地面加速度反應譜的影響。A certain thickness of sand cushion of a certain size or gradation is paved between the foundation and ground in this new method. when earthquake happens the sand cushion will have plastic shearing strain, reducing the input of high frequency volume, thus consume the earthquake energy form substrate. it is showed in shaking table experiments that there is relevant slippage between foundation and sand cushion, which can prevent the seismic energy from being passed to the above structure and thus reduced the seismic role for the above structure
在建築物的基礎與地基之間鋪設一定厚度、某種單一粒徑或級配砂墊層,在地震作用時砂墊層發生的塑性剪切變形,減少地震波高頻分量的輸入,從而消耗了下層傳來的地震能量;振動臺試驗表明,當振動發生時,基礎與砂墊層之間有明顯的滑移產生,這就對地震能量向上部結構的傳遞起到了隔斷作用,因而對上部結構起到了減震作用。The characteristics about the magnitude and distribution of stress, the width and depth of joint and time sequence of joint opening are compared on condition of different traveling wave directions. the difference between general uniform wave input and traveling wave input is also compared
分析了分縫壩行波地震輸入的地震響應,比較了常規均勻輸入和行波輸入,行波不同輸入方向對應力的大小和分佈,縫的張合深度和寬度、縫的張合時序等諸多方面的表現特性。Furthermore, the optimization of the parameters of the frame with friction energy dissipation under several earthquake records is solved. examples are illustrated to verify the method
此外,還解決了多種地震波輸入下摩擦耗能框架的優化問題,並通過算例進行詳細的解析。Finally, shaking table experiments are carriod out, in which input several different character seismic waves with different acceleration peak value on several states of the shell model. the experimental results prove the theory research to be correct and show that the control strategy raised in this thesis is effective and feasible
最後,進行了雙層柱面網殼的被動控制減震試驗,對于網殼在替換不同桿件數量、位置和輸入不同加速度峰值的不同頻譜特性的地震波下的地震反應進行了上百種工況的振動臺試驗。( 3 ) the sma incorporated friction damper is applied to long - span canopy roof structures to investigate its vibration control performance. the control effectiveness is analyzed with inputting three - dimensional el - centro earthquake waves in small, medium and large seismic intensity. the results show that control performance of the sma incorporated friction damper is superior to that of both the friction damper and the sma damper
通過輸入三向el - centro地震波,分別研究了結構在小震、中震和大震情況下的減振性能,並與結構在純摩擦阻尼器、僅sma阻尼器的控制效果進行了對比分析,表明sma復合摩擦阻尼器具有卓越的耗能減振性能。This paper firstly compares the provisions about torsion effect and anti - torsion design in several codes ( the old and new chinese code for seismic, and some other countries " codes ). then, according to the code for seismic design of buildings ( gb50011 - 2001 ) and the code for concrete structure design ( gb50010 - 2002 ), the paper designs two multi - storied irregular concrete spatial frames, which respectively situated at the area of fortification intensity 8 and 9. subsequently, using the program based on the column - beam element of fiber model, input several ground motion records, which are selected according to the demand of code, to carry the structures " three - dimensional nonlinear analysis in two perpendicular directions at the same time
本文對比了我國新、舊建築抗震設計規范( gb50011 - 2001 、 gbj11 89 )以及國外設計規范(或指南)中關于結構扭轉效應與抗扭設計的相關規定;按照新建築抗震設計規范和混凝土結構設計規范( gb50010 2002 ) ,設計了設防烈度分別為8度和9度的兩個多層鋼筋混凝土不規則空間框架結構,利用纖維模型樑柱單元的三維非線性動力分析程序,根據新抗震設計規范的要求,在設防地震作用和罕遇地震作用水準下選擇適當的地震波作為輸入,對結構進行了雙向地震作用下的三維非線性動力反應分析。From the results, it could be known that the structure ' s dynamic displacements were related with the seismic waves dimension and direction
從計算結果看,結構的動位移與輸入的地震波方向及維數有關。分享友人