重载交通水泥路面传力杆设计的力学分析和建议  

Mechanical Analysis and Suggestions of Dowel Bar Design in Cement Pavement Under Heavy Traffic

作　　者：申俊敏[1] 张艳聪[1] 李祖仲[2] 

机构地区：[1]山西省交通科学研究院黄土地区公路建设与养护技术交通行业重点实验室,太原030006 [2]长安大学材料科学与工程学院,西安710064

出　　处：《武汉理工大学学报》2013年第1期58-63,共6页Journal of Wuhan University of Technology

基　　金：山西省交通建设科技项目(11-2-19)

摘　　要：建立了Winkler地基上的双层结构模型,分析了传力杆几何尺寸、空间位置、与混凝土结合状况及布设方式对接缝传荷能力、传力杆内力和面层底部最大应力的影响。结果表明,增加传力杆直径和长度不能有效提高传荷能力;弯沉传荷系数随传力杆竖直偏角的增大线性减小,随传力杆支撑模量的增大呈指数增大,随松动量的增大呈二次曲线下降;传力杆数量相同时,布设在轮迹带上与沿横缝均匀布设的传荷能力相近,达到一定数量后传荷能力不再因布设位置、层数明显变化。Double-layer structure model was established. The effect of dowel bar design parameters on joint load transfer capacity, internal stress of dowel bar and stress of slab bottom was analyzed based on it, such as physical dimen- sion, three-dimensional position, Combination with concrete and setting mode. The results showed that increasing the di- ameter and length of dowel bar can not effectively enhance the capacity of load-transfer. Load transfer coefficient de- creased linearly with the increase of dowel bar vertical angle, exponential growed with the increase of dowel bar support- ing modulus, conical decreased with the increase of looseness. When an equal number of dowel bars laid on the wheel track belt or laid evenly along the transverse joint, transfer capacity was approximately the same, when the quantity reached a certain amount, transfer capacity didn＇t change significantly due to the setting position and layer.

关 键 词：道路工程 传荷能力 有限元 传力杆设计 重载交通 

分 类 号：U416.2[交通运输工程—道路与铁道工程]