预应力混凝土箱梁桥底板空间折角效应研究  

Study of spatial flex-corner effect of bottom slab of prestressed concrete box girder bridges

作　　者：张冬冬[1] 赵启林[1] 黄亚新[1] 

机构地区：[1]解放军理工大学工程兵工程学院

出　　处：《山西建筑》2011年第26期170-172,共3页Shanxi Architecture

基　　金：江苏省自然科学基金(项目编号:BK209467)

摘　　要：对大跨径预应力混凝土箱梁桥梁段接缝处折角进行了分析,通过ANSYS数值模拟,指出底板空间折角效应是造成接缝处底板纵向裂缝的重要原因,并提出了控制底板纵向开裂的建议。The flex-comer of long span prestressed concrete continuous box girder bridges were analyzed. By numerical simulation with ANSYS software, it points out that the spatial flex-comer effect under anchorage ability and dead load plays an importance role in causation of longitudinal cracks at the bottom slab between the seams, and the improvements of controlling the longitudinal cracks are proposed.

关 键 词：预应力混凝土连续箱梁桥 底板 ANSYS 纵向裂缝 空间折角效应 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]