摘要
为了提高水泥混凝土桥面沥青混凝土铺装的使用寿命,以复合梁试验评价不同的桥面沥青铺装结构的疲劳性能,采用有限元法分析荷载作用下复合梁试件具有与实际梁体一致的应力响应,并采用复合梁疲劳试验测试不同桥面沥青铺装层组合的疲劳寿命。由试验结果可知,复合梁破坏模式与桥梁铺装实际破坏形式一致,相同的铺装结构在加入防水粘结层后寿命可增长8倍,铺装材料加入纤维可使疲劳寿命增长20%以上;SMA和纤维加筋的AC组合是本次试验中的最优结构。
In order to improve the life of cement concrete bridge deck pavement, compound beam test was used to research the fatigue characteristics of hot mixed asphalt (HMA) courses on bridge deck, finite element analysis (FEA) method was employed to make the mechanical response of compound beam accord with that of actual bridge deck under the same load, the fatigue test was done for compound beams with different pavement structures. Test result shows that the destroy process of compound beam is similar with that of actual bridge deck, the structure with waterproof and cohesive course has a fatigue life, which is 8 times longer than that of the structure without the course, the addition of fiber in the HMA can increase at least 20% of its fatigue life, the combination structure of stone matrix asphalt (SMA) and fiber reinforced asphalt concrete(AC) is the best pavement structure in the test. 2 tabs, 11 figs, 9 refs.
出处
《交通运输工程学报》
EI
CSCD
北大核心
2006年第1期39-43,共5页
Journal of Traffic and Transportation Engineering
基金
中国博士后科学基金项目(2002032197)
江苏省交通科学研究计划项目(02Y006)
关键词
道路工程
水泥混凝土桥面
复合梁
沥青混凝土铺装
结构组合
疲劳性能
road engineering pavement
cement concrete bridge deck
compound beam
HMA pavement
structures' combination
fatigue characteristic