{"title":"Response of suspension bridges to travelling earthquake excitations: Part II-lateral response","authors":"Ahmed M. Abdel-Ghaffar, Richard G. Stringfellow","doi":"10.1016/0261-7277(84)90002-0","DOIUrl":"10.1016/0261-7277(84)90002-0","url":null,"abstract":"<div><p>The lateral response of suspension bridges to travelling earthquake excitations is investigated in the time and frequency domains. The ground motion inputs at one support are assumed to propagate, with different speeds, such that they hit the other supporting points of the structure with no change of shape (non-dispersive waves). It is assumed that the vibration of the center span can be treated separately from that of the side spans; furthermore, both the piers and towers are assumed to be relatively rigid in the lateral direction. A finite element dynamic analysis is utilized to investigate the lateral earthquake response. The response of the Golden Gate Bridge to ground motions recorded during the 1979 Imperial Valley earthquake is studied. It was found that the transmission time can have a significant effect on the response, that a relatively large number of modes is necessary to obtain a reasonable representation of the response, that uniform ground motion is not a good assumption, and that the additional cable tension induced by the lateral excitation is very small in comparison with the dead-load value; however, the induced displacements and flexural stresses can be significant live load conditions.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 2","pages":"Pages 73-81"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90002-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75257453","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}
{"title":"Ground water in water resources planning","authors":"","doi":"10.1016/0261-7277(84)90010-X","DOIUrl":"https://doi.org/10.1016/0261-7277(84)90010-X","url":null,"abstract":"","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 2","pages":"Page 115"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90010-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136748183","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}
{"title":"Civil engineering systems analysis and design","authors":"","doi":"10.1016/0261-7277(84)90016-0","DOIUrl":"https://doi.org/10.1016/0261-7277(84)90016-0","url":null,"abstract":"","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 2","pages":"Page 115"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90016-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92019592","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}
{"title":"IDEA - International directory of engineering analysis","authors":"","doi":"10.1016/0261-7277(84)90017-2","DOIUrl":"https://doi.org/10.1016/0261-7277(84)90017-2","url":null,"abstract":"","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 2","pages":"Page 116"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90017-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92130118","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}
{"title":"Numerical methods for coupled problems","authors":"Dr C. Patterson","doi":"10.1016/0261-7277(84)90007-X","DOIUrl":"10.1016/0261-7277(84)90007-X","url":null,"abstract":"","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 2","pages":"Page 113"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90007-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86519301","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}
{"title":"Response of suspension bridges to travelling earthquake excitations: Part I. Vertical response","authors":"Ahmed M. Abdel-Ghaffar, Richard G. Stringfellow","doi":"10.1016/0261-7277(84)90001-9","DOIUrl":"https://doi.org/10.1016/0261-7277(84)90001-9","url":null,"abstract":"<div><p>The vertical response of suspension bridges to travelling earthquake exciatations is investigated in the time and frequency domains. The ground motion inputs at one support are assumed to propagate, with different speeds, such that they hit the other supporting points of the structure with no change of shape (non-dispersive waves). The response of the Golden Gate Bridge of San Francisco, California, to these ground motion inputs is calculated in the time and frequency domains. Ground motion inputs are taken from the records of the 15 October 1979 Imperial Valley earthquake. Propagation of the earthquake wave train is simulated by taking one array record (array no. 5) as the input at the left anchorage of the bridge, and adding appropriate time delays to the other inputs. Several different cases are studied for various seismic wave speeds, and several reference cases such as uniform ground motion and different simultaneous inputs, etc. are included from comparison. Vibrational displacements, flexural stresses, and shear forces are calculated at critical sections of the bridge in the time domain and compared with the root mean square response values obtained from the frequency domain. Peak factors are calculated and compared with expected values from the random vibration analysis.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 2","pages":"Pages 62-72"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90001-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136818445","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}
{"title":"Software concepts in process control","authors":"","doi":"10.1016/0261-7277(84)90013-5","DOIUrl":"https://doi.org/10.1016/0261-7277(84)90013-5","url":null,"abstract":"","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 2","pages":"Page 115"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90013-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91967965","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}
{"title":"Seismic response of end-bearing single piles","authors":"George Gazetas","doi":"10.1016/0261-7277(84)90003-2","DOIUrl":"10.1016/0261-7277(84)90003-2","url":null,"abstract":"<div><p>A numerical study is presented of the dynamic response of end-bearing piles embedded in a number of idealized soil deposits and subjected to vertically propagating harmonic <em>S</em>-waves. Results, for both ‘kinematic’ and ‘inertial’ interaction, are offered in the form of dimensionless graphs and formulae covering a wide range of excitation frequencies and of crucial material and geometric parameters. Practical aspects of the evaluation of the influence of piles on the effective seismic excitation of a structure are discussed and a case history illustrates the usefulness of the presented results.</p></div>","PeriodicalId":100715,"journal":{"name":"International Journal of Soil Dynamics and Earthquake Engineering","volume":"3 2","pages":"Pages 82-93"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0261-7277(84)90003-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73666223","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}