部分结合式双层梁层间结合系数的求解  

Approach of interfacial bond factor of semi-contacted bi-layer asphalt mixture beam

作　　者：罗作芬[1,2] 郑传超[1] 史泽恒[1] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]西南科技大学土木工程与建筑学院,四川绵阳621010

出　　处：《长安大学学报（自然科学版）》2010年第1期30-34,共5页Journal of Chang’an University(Natural Science Edition)

基　　金：河北省交通科技项目(Y-02104)

摘　　要：针对沥青混合料部分结合式双层梁层间结合系数难以获得的问题,采用理论分析的方法推导出部分结合式双层梁层间结合系数的计算公式。利用相应的双层梁弯曲试验测试计算公式中的相关参数,反算出层间结合系数,最后由实例计算出层间洒铺1 kg/m2、2 kg/m2粘层油对应的部分结合式双层梁层间结合系数分别为0.348、0.406。结果表明,通过理论分析与试验模拟相结合的方法,求解部分结合式双层梁层间结合系数是可行的,且反算出的层间结合系数可以作为部分结合式双层梁层间处理效果的评价指标和最佳层间粘层油用量的判断依据。In order to obtain the interfacial bond factor of semi contacted bi-layer asphalt mixture beam, the theoretical analysis method was applied to deduce the computational formula for semi contacted bi-layer asphalt mixture beam. The reasonable bending test was designed to measure the relative parameters in theoretical formula, and on the base of measured results, the interfacial bond factor of semi-contacted bi layer beam was calculated. At last the interfacial bond factors, of the semi-contacted bi layer asphalt mixture beams with bonding oil contents of 1 kg/m^2 , 2 kg/m^2 were respectively calculated out to he 0. 348 and 0. 406. The research indicates that： it is feasible to calculate the interfacial bond factor of semi contacted bi-layer asphalt mixture beam by the method of theoretical analysis combining with test simulation. The interfacial bond factor calculated can be used as the index for evaluating the interface treatment of bi layer beam and the basis for selecting the optimal bonding oil content between layers. 2 tabs, 3 figs, 8 refs.

关 键 词：道路工程 沥青路面 沥青混合料部分结合式双层梁 结合系数 弯曲试验 弹性模量 

分 类 号：U414.75[交通运输工程—道路与铁道工程]