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International Journal of Soil Dynamics and Earthquake Engineering最新文献

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Earthquake induced deformations on Earth-fill and rock-fill dams 填土和石坝的地震变形
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1985-01-01 DOI: 10.1016/0261-7277(85)90034-8
Trifun A. Paskalov
{"title":"Earthquake induced deformations on Earth-fill and rock-fill dams","authors":"Trifun A. Paskalov","doi":"10.1016/0261-7277(85)90034-8","DOIUrl":"10.1016/0261-7277(85)90034-8","url":null,"abstract":"<div><p>The fundamental criterion for stability analysis of an embankment dam is the factor of safety against sliding of a part of the dam slopes. Usually, the dam is treated as a safe structure if this factor of safety is greater than unity. In this case the dam body experiences elastic deformations only. But, if the dam is subjected to a strong earthquake motion its deformations far extend the elasticity limit, so permanent displacements take place. In such a case the factor of safety, as a stability criterion, becomes immaterial, and thus the character and magnitude of the permanent displacements become measures for estimating the overall stability of the dam as a structure. It is important too, that engineering judgement should be introduced in assessing the safety of any dam under consideration.</p><p>Having in mind all the above assumptions, an analytical procedure for estimation of permanent displacements has been developed, based upon the physical characteristics of the built-in material, as well as the nature of the ground motion and the response of the structure to that motion. Finally, the proposed procedure has been checked on a real case, where the Upper San Fernando Dam, damaged by the February 9, 1971 earthquake was taken as a pilot structure.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"4 1","pages":"Pages 35-42"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(85)90034-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87738736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Base excitation in one-dimensional soil dynamics 一维土壤动力学中的地基激励
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1985-01-01 DOI: 10.1016/0261-7277(85)90032-4
E.Benjamin Wylie, Chien-Tai Wu
{"title":"Base excitation in one-dimensional soil dynamics","authors":"E.Benjamin Wylie,&nbsp;Chien-Tai Wu","doi":"10.1016/0261-7277(85)90032-4","DOIUrl":"10.1016/0261-7277(85)90032-4","url":null,"abstract":"<div><p>The prescribed motion to be used as base excitation for shear wave propagation studies in soils is not well defined in the literature. This paper utilizes two methods to investigate the concept of utilizing one-half the rock surface velocity as the incident velocity at a transmitting boundary at the soil base. A range of material properties, thicknesses, and frequencies are used to explore the variation of the ratio: incident velocity to rock surface velocity. Although the ratio varies over a broad range recommendations are made to assist the analyst in selecting a conservative ratio suitable for engineering studies.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"4 1","pages":"Pages 24-30"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(85)90032-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80213231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A note on controlling the optical density on analog film records in strong motion accelerographs 关于控制强运动加速度计中模拟胶片记录的光密度的说明
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1985-01-01 DOI: 10.1016/0261-7277(85)90033-6
M.D. Trifunac, D.K. Marcus, K. Moslem
{"title":"A note on controlling the optical density on analog film records in strong motion accelerographs","authors":"M.D. Trifunac,&nbsp;D.K. Marcus,&nbsp;K. Moslem","doi":"10.1016/0261-7277(85)90033-6","DOIUrl":"10.1016/0261-7277(85)90033-6","url":null,"abstract":"<div><p>A device and its solid state logic are described which improve the uniformity of the optical density of recorded analog traces on film. An example is presented for the Light Control Module LM-8, designed to work in the SMA-1 strong motion accelerograph. Tests have been performed to determine the overall performance of LM-8. The results are very favorable and show that LM-8 improves significantly the overall quality of strong motion acceleration traces recorded on film.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"4 1","pages":"Pages 31-34"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(85)90033-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78682527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A statistical approach to generation of design spectrum compatible earthquake time histories 设计谱相容地震时程生成的统计方法
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1985-01-01 DOI: 10.1016/0261-7277(85)90029-4
P.D. Spanos, L.M. Vargas Loli
{"title":"A statistical approach to generation of design spectrum compatible earthquake time histories","authors":"P.D. Spanos,&nbsp;L.M. Vargas Loli","doi":"10.1016/0261-7277(85)90029-4","DOIUrl":"10.1016/0261-7277(85)90029-4","url":null,"abstract":"<div><p>A statistical approach to design spectrum compatible generation of seismic motions is presented. This problem is addressed on a probabilistic basis, and an earthquake time history is considered as a realization of a nonstationary stochastic process which possesses an evolutionary power spectrum. Thus, the approach is based on relating the power spectrum of the stochastic seismic motion to the design spectrum. In determining the parameters which define the power spectrum, an approximate expression for the probability density of the response of a lightly damped linear structure to a broadband nonstationary stochastic excitation is used. For exemplification, the Newmark-Blume-Kapur (NBK) spectrum and the Housner (H) spectrum are considered. In this regard, analytical expressions of power spectra of stochastic processes which are statistically compatible with the (NBK) and the (H) spectra are derived. These expressions can prove quite useful not only for simulating acxelerograms, but for conducting, as well, stochastic dynamic analyses of structural systems exposed to seismic loads specified by regulatory agencies.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"4 1","pages":"Pages 2-8"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(85)90029-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84318831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 74
Scattering of plane SH-waves by cylindrical canals of arbitrary shape 任意形状的圆柱形管道对平面sh波的散射
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1985-01-01 DOI: 10.1016/0261-7277(85)90031-2
Nasser Moeen-Vaziri, M.D. Trifunac
{"title":"Scattering of plane SH-waves by cylindrical canals of arbitrary shape","authors":"Nasser Moeen-Vaziri,&nbsp;M.D. Trifunac","doi":"10.1016/0261-7277(85)90031-2","DOIUrl":"10.1016/0261-7277(85)90031-2","url":null,"abstract":"<div><p>A boundary method is used to solve numerically the problem of scattering and diffraction of <em>SH</em>-waves by cylindrical canals of arbitrary shape in a homogeneous, linear, elastic, and isotropic half-space. A least-square technique has been employed to solve this problem. Results are obtained using a multiple expansion in terms of Henkel's functions. Displacements and stresses near and in the canal wall have been investigated and a comparison with known exact and approximate solutions for <em>SH</em>-wave motion has been studied. Numerical results for displacement and stress amplitudes for different geometries are presented.</p><p>The stress and displacement amplitudes in the canal wall and on nearby ground surface change rapidly from one point to another. The higher excitation frequencies lead to greater complexity of the computed motions. For grazing and nearly grazing incidences, a shadow zone is developed behind the canal.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"4 1","pages":"Pages 18-23"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(85)90031-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82851825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
A simple plasticity theory for frictional cohesionless soils 无黏性摩擦土的简单塑性理论
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1985-01-01 DOI: 10.1016/0261-7277(85)90030-0
Jean H. Prevost
{"title":"A simple plasticity theory for frictional cohesionless soils","authors":"Jean H. Prevost","doi":"10.1016/0261-7277(85)90030-0","DOIUrl":"10.1016/0261-7277(85)90030-0","url":null,"abstract":"<div><p>A simple elastic-plastic constitutive model for cohesionless soils is proposed. The model retains the extreme versatility and accuracy of the simple multi-surface <em>J</em><sub>2</sub>-theory in describing observed shear nonlinear hysteretic behaviour, shear stress-induced anisotropy; and reflects the strong dilatancy dependency on the effective stress ratio. The theory is applicable to general three-dimensional stress-strain conditions, but its parameters can be derived entirely from the results of conventional laboratory soil tests. A number of examples are presented including an analysis of seismically induced liquefaction behind a retaining structure.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"4 1","pages":"Pages 9-17"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(85)90030-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85502682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 395
Discussion of Shear vibration of inhomogeneous earth dams in rectangular canyons 矩形峡谷中非均质土坝剪切振动的探讨
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1985-01-01 DOI: 10.1016/0261-7277(85)90036-1
Ahmed-W.M. Elgamal
{"title":"Discussion of Shear vibration of inhomogeneous earth dams in rectangular canyons","authors":"Ahmed-W.M. Elgamal","doi":"10.1016/0261-7277(85)90036-1","DOIUrl":"10.1016/0261-7277(85)90036-1","url":null,"abstract":"","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"4 1","pages":"Page 52"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(85)90036-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79995843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A transmitting boundary for the numerical simulation of elastic wave propagation 弹性波传播数值模拟的透射边界
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1984-10-01 DOI: 10.1016/0261-7277(84)90033-0
Z.P. Liao, H.L. Wong
{"title":"A transmitting boundary for the numerical simulation of elastic wave propagation","authors":"Z.P. Liao,&nbsp;H.L. Wong","doi":"10.1016/0261-7277(84)90033-0","DOIUrl":"10.1016/0261-7277(84)90033-0","url":null,"abstract":"<div><p>A numerical method for transmitting waves out of an artificial boundary is presented. It is applicable to linear two- or three-dimensional wave problems with a time-stepping algorithm and a convex artificial boundry. This numerical scheme, expressable in the form of an extrapolation formula, can be implemented easily in finite elements or finite differences. The values at the artificial boundary nodes are calculated with only interior nodal values from time steps past. Limitations of this method are approximately the same as those of the finite element method. The accuracy is controlled by the number of terms in the extrapolation series and can be further improved by decreasing the size of the time step.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 4","pages":"Pages 174-183"},"PeriodicalIF":0.0,"publicationDate":"1984-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90033-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86578194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 172
Engineering seismology 工程地震学
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1984-10-01 DOI: 10.1016/0261-7277(84)90039-1
Hui-xian Liu
{"title":"Engineering seismology","authors":"Hui-xian Liu","doi":"10.1016/0261-7277(84)90039-1","DOIUrl":"10.1016/0261-7277(84)90039-1","url":null,"abstract":"","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 4","pages":"Page 221"},"PeriodicalIF":0.0,"publicationDate":"1984-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90039-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"97614398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new fast algorithm for the calculation of response of a single-degree-of-freedom system to arbitrary load in time 提出了一种快速求解单自由度系统对任意载荷响应的新算法
International Journal of Soil Dynamics and Earthquake Engineering Pub Date : 1984-10-01 DOI: 10.1016/0261-7277(84)90035-4
Vincent W. Lee
{"title":"A new fast algorithm for the calculation of response of a single-degree-of-freedom system to arbitrary load in time","authors":"Vincent W. Lee","doi":"10.1016/0261-7277(84)90035-4","DOIUrl":"10.1016/0261-7277(84)90035-4","url":null,"abstract":"<div><p>The typical response calculation of a single-degree-of-freedom system uses a recursive algorithm for evaluating the relative displacement and velocity {<span><math><mtext>x[n + 1], </mtext><mtext>dot</mtext><mtext>x</mtext><mtext>[n + 1]}</mtext></math></span> from {<span><math><mtext>x[n], </mtext><mtext>dot</mtext><mtext>x</mtext><mtext>[n]}</mtext></math></span> and the acceleration values {<em>a</em>[<em>n</em>], <em>a</em>[<em>n</em> + 1]}. Each time step of the iteration requires eight multiplications and six additions. A new algorithm using the digital impulse invariant and step invariant simulation of a continuous system has been derived which requires only two multiplications and three additions. This amounts to a 75% saving in multiplication time and 50% saving in addition time. The accuracy of the new algorithm is guaranteed by the sampling theorem in digital signal analysis. Calculation of the response spectra using the new algorithm is as accurate as that using the old algorithm.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 4","pages":"Pages 191-199"},"PeriodicalIF":0.0,"publicationDate":"1984-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90035-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86286895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
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