同济大学学报（自然科学版）2012，Vol.40Issue(4)：564-568,5.DOI:10.3969/j.issn.0253-374x.2012.04.011
混凝土路面接缝填缝料振动特性分析
Vibrating Characteristics of Joint Sealant on Concrete Pavements
摘要
Abstract
Based on one-quarter vehicle-foundation beam interaction model, an analysis was made of the influences of factors, such as vehicle moving speed, mass above suspension system, pavement thickness, joint width, joint shearing stiffness, foundation modulus, foundation damping as well as foundation weakening index etc, on the dynamic shearing strains, strain rates and corresponding base frequencies. The study indicates when the foundation damping coefficient Cf is small, the dynamic shearing strains and strain rates versus position x change in a fluctuate manner; whereas Cf is large enough, the fluctuation disappears. In general, the amplitudes of the dynamic shearing strains and strain rates are 0.003—0.05 and 5-25(l/s) respectively, and corresponding base frequencies are 5—100 Hz, however, to reasonably open the joint width and increase the joint shearing stiffness as well as the foundation damping will be effective to lower the amplitudes of the dynamic shearing strains and strain rates, thus to reduce the risk of joint sealants damage. The resultant can be used for evaluation and selection of joint sealants for concrete pavements.关键词
道路工程/混凝土路面/接缝填缝料/剪切应变/剪切应变率/基频Key words
road engineerings concrete pavement/ joint sealant/ dynamic shearing strain/ dynamic shearing strain rate/ base frequency分类
交通工程引用本文复制引用
周玉民,谈至明,李立寒..混凝土路面接缝填缝料振动特性分析[J].同济大学学报（自然科学版）,2012,40(4):564-568,5.基金项目
交通部两部交通科技建设项目(200731822301-4,200731822301-9) （200731822301-4,200731822301-9）
