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《Journal of Vibration and Shock》 2007-09
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HOU Xiu-hui1, DENG Zi-chen1,2, HUANG Li-xin1(1. School of Mechanics, Civil Engineering & Architecture, Northwestern Polythechnical University, Xi’an 710072, China;2. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China)  
The vibration differential equation of bridge structures is converted into the general format of precise integration method (PIM). As a result, PIM is extended to problems with moving loads. A model of load identification based on the HPD-S format of PIM is constructed and numerical results are compared with those based on the HPD-L format of PIM. It is shown that the former model exhibits higher precision even to larger time interval step and whatever load pattern is adopted. And the method developed to modify the latter model is also proved to be effective.
【Fund】: 国家自然基金(10372084和10572119);; 教育部新世纪优秀人才支持计划(NCET-04-0958);; 大连理工大学工业装备结构分析国家重点实验室开放基金;; 西北工业大学创新种子基金(Z200730)资助
【CateGory Index】: U441.2
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