摘要
为了减少桥面铺装在运营中的各类病害,将水泥-乳化沥青混凝土应用于桥面铺装的下层,并取代防水粘结层,对其适用性进行了研究.采用有限元力学分析方法,通过变换结构层的厚度来模拟该桥面结构层的力学行为.结果表明:当增大水泥-乳化沥青结构层的厚度时,各层之间的剪应力均减小,与桥面板之间的剪应力减小幅度较为明显,该层本身所承受的压应力也随之减小,当该层的厚度增加到3 cm以上时,上下层之间的剪应力下降幅度开始减缓.通过对新型桥面铺装结构力学行为特点进行研究,表明该材料适用于中、小型混凝土桥.
In order to reduce the various damages of bridge deck pavement during the operation process,the cement-emulsified asphalt concrete was applied at the lower layer of bridge deck pavement to replace the waterproof adhesive layer,and the applicability of cement-emulsified asphalt concrete was studied. With the finite element analysis method,the mechanical behavior of bridge deck structure layer was simulated through changing the thickness of structure layer. The results showthat when the thickness of cement-emulsified asphalt structure layer increases,the shear stress between the layers decreases. Especially,the shear stress between the cement-emulsified asphalt layer and the bridge deck obviously decreases,and the compressive stress subjected by the layer itself also decreases. When the thickness of the layer increases to more than3 cm,the descending range of shear stress between both upper and lower layers begins to slowdown.Through the study on the mechanical behavior characteristics of newbridge deck pavement structure,it is proved that the proposed material is suitable for the medium and small concrete bridges.
作者
逯艳华
杨璐
徐岩
朱浮声
LU Yan-hua;YANG Lu;XU Yan;ZHU Fu-sheng(School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China;Regulation ＆ Technology Office, Traffic Engineering Quality and Safety Supervision Bureau of Liaoning Province, Shenyang 110005, China;School of Architectural and Civil Engineering, Shenyang University of Technology, Shenyang 110870, China;School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China)
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2018年第3期345-351,共7页
Journal of Shenyang University of Technology
基金
国家自然科学基金资助项目(11102118)
关键词
水泥-乳化沥青混凝土
桥面铺装
力学分析
数值模拟
结构层
应力
剪应力
防水粘结层
cement-emulsified asphalt concrete
bridge deck pavement
mechanical analysis
numericalsimulation
structure layer
stress
shear stress
waterproof adhesive layer
