混凝土桥面铺装粘结层体系力学性能试验研究

Mechanics performance of binding course system for concrete bridge deck overlay

针对大跨径混凝土桥梁桥面铺装,通过有限元力学计算分析了粘结层结构的重要性及其变形规律,力学分析结果表明粘结层是桥面铺装结构体系的关键.按照目前常用的粘结层材料,进行了粘结层方案设计及材料性能评价.分别对四种粘结层材料进行了剪切及直拉对比试验,结果表明热涂改性沥青粘结层方案性能最好,对粘结层评价试验方法进行比较表明直接拉伸试验较适合于评价粘结层材料,并综合试验结果分析了粘结层体系的构成及其影响因素.

The performances of four types of binding course materials are evaluated through shearing and direct pulling comparative tests.Tests results show that the performance of hot modified asphalt is the best.Compari-son of the methods of evaluating binding course shows the direct pulling test suits to judge the performance of binding course material.The constitution of binding course system and its contributory factors are analyzed.