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equivalent-linear
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  等效线性
     In this new method, aninteraction factor is calculated with the empirical formula previously derived,then the racking deformation of the tunnel is determined thorough multiplyingthe interaction factor to the free field shear deformation of the surroundingsoil layers, which can be obtained by using equivalent-linear earthquake siteresponse analysis or empirical formulas.
     新方法通过一维剪切土柱的频域等效线性分析或者经验公式来确定结构所在土层自由场的剪切变形峰值,再乘以本文建议的静力相互作用系数,即可得到结构的最大等效剪切变形。
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     The comparison between equivalent-linear method and fully nonlinear method is performed.
     比较了等效线性本构和弹塑性本构的区别。
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  “equivalent-linear”译为未确定词的双语例句
     With the use of one-dimension equivalent-linear wave motion method which is wildly used at present in the analysis of earthquake site response, the platform values and the characteristic periods of ground surface acceleration response spectra of different profiles were calculated and analyzed under different ground motion inputs.
     利用目前工程上常用的一维等效线性化波动方法计算分析在不同地震动输入下,不同场地类别、三种土层结构的地表加速度反应谱的特征周期和平台值。 通过大量计算,分析总结出三种土层结构对反应谱平台值和特征周期的影响。
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  equivalent-linear
Then we calculate one-dimensional equivalent-linear site responses using the estimated S-wave velocity structures and the main shock records observed on the surface.
      
The Equivalent-Linear Earthquake Response Analyses (EERA) Model was used to study the effect of local soil conditions on ground-motion parameters.
      


By following the equivalent linear system model[1], general expressions of autocorrelation functions and power spectrums of complex codes have been derived. The complex codes are formed by N-times clock codes which are digitally modulated by PN codes. This method is applicable both to odd and even multiple numbers of clock code frequency. By way of illustratrating the method, a particular kind of complex codes is given.

本文根据等效线性系统模型法,推导出了伪码对N倍钟码进行数字调制后,所得复合码的自相关函数和功率谱的一般表达式。这个方法对奇数倍钟码或偶数倍钟码均适用。文中举出了一种特定复码作为这种方法的说明。

In this paper on the basis of stochastic linearization techniques,an analytical method is presented for the dyramic reliability of a lightly damepd and weakly nonlinear multidegree-of-freedom system excited by stationary Gauss wideband random loads with the help of the mode superposition method.It is proved that under the condition of the stationary Gauss white noise loads the equivalent normalized responses are approximately independent. With this conclusion the joint probabilistic density function of the normalized...

In this paper on the basis of stochastic linearization techniques,an analytical method is presented for the dyramic reliability of a lightly damepd and weakly nonlinear multidegree-of-freedom system excited by stationary Gauss wideband random loads with the help of the mode superposition method.It is proved that under the condition of the stationary Gauss white noise loads the equivalent normalized responses are approximately independent. With this conclusion the joint probabilistic density function of the normalized responses is yielded the formulas are derived for determining the equivalent linear damping and fre= quency.Furthermore,the joint probabilistic density function of the relative displacement and velocity responses of the particles have been yielded. A method is presented for determining the dyramic reliability of the nonlinear multidegree-of-freedom system on the basis of the first passage damage mechanism and "weakest link "model".The ar.alytical expressions of the dyramic reliability of the stationary responses of the nonlinear multidegree-of-freedom system taking the relative displacement quantities of the particles as bounds are obtained.Then the developed method is extended to the dynamic reliability problem in which the loads are stationary Gauss wide-band random processes.Finally, the method presented in the paper is applied to N-degree-of-freedom quasilinear system and the numerical results of a two-degree-of-freedom quasilinear system are compared with those obtained by Monte Carlo simulation.

本文在等价线性化法的基础上提出了一种用振型分解法分析小阻尼、弱非线性多自由度体系受平稳高斯宽频带随机荷载作用的动力可靠性的完整的解析方法。先在平稳高斯白噪声的荷载条件下证明了等价正规反应是近似独立的,并由此求出正规反应的联合概率密度函数,建立了确定等价阻尼和等价固有圆频率的公式;进一步求出体系质点相对位移及其导数的联合概率密度函数后,提出了一种基于首通破坏机制和“最弱链环”(weakest link)模型的非线性多自由度体系的动力可靠性的计算方法,求出了以质点相对位移量为界限的非线性多自由度体系的平稳反应的动力可靠性的解析表达式。其次,把上述方法推广到了荷载是平稳高斯宽频带过程的情况。最后把本文提出的理论应用到了拟线性多自由度体系。对于两个自由度的情况求出了数字结果,并与Monte Carlo模拟结果进行了比较,验证了本文提出的方法的正确性。在结论中还指出了本文的方法用来处理过渡反应时应该注意的一些问题。

A method for predicting damage of multistory brick buildings subjected to seismic load is described. Earthquake excitation is represented by random process and structural damage is assessed in terms of maximum displacement and accumulated energy dissipation. A restoring force model for brick building is proposed. Equivalent linear parameters of simple hysteretic brick structures are determined from inelastic response spectra. In reliability analysis uncertainties in parameters and error of model as well as randomness...

A method for predicting damage of multistory brick buildings subjected to seismic load is described. Earthquake excitation is represented by random process and structural damage is assessed in terms of maximum displacement and accumulated energy dissipation. A restoring force model for brick building is proposed. Equivalent linear parameters of simple hysteretic brick structures are determined from inelastic response spectra. In reliability analysis uncertainties in parameters and error of model as well as randomness of loading are considered. As an application example the failure probability of a 3-story brick building designed according to current Chinese aseismic design code is evaluated.

本文给出了多层砖房在其使用期内的地震破坏概率的计算力法。地震扰动用随机过程表示,结构的破坏用最大位移和累积能量耗损两个参数来评定。建议了一个砖结构的恢复力模型,据此模型,通过拟合非弹性反应谱给出了简单砖结构的等效线性参数。在动力分析中,不仅考虑了荷载的随机性,同时还考虑了参数的不确定性和分析模型的误差的影响。作为应用例子,用本方法计算了满足我国现行抗震规范要求的一座三层砖房的地震破坏概率。

 
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