装配式空心板桥铰缝局部受力性能研究

Study on Local Mechanical Properties of Hinge Joints on Assembled Hollow Slab

对装配式空心板桥铰缝病害、实际工作状况、局部受力性能进行研究,结果表明:装配式空心板桥铰缝损坏是引起桥面铺装纵向开裂、板底横裂、板间错台及单板受力的主因;装配式空心板桥铰缝计算只传递剪力的假定,与实际受力状态不相符,采用弹性支承连续梁法进行计算分析更符合实际受力情况。

This paper studies disease,actual work status,local mechanical properties of hinge joints on assembly type hollow slab.Results show that the hinge joint damage on assembled hollow slab is the major cause for longitudinal crack of bridge deck pavement,transverse crack of slab,misalignment of slabs or force on single slab.Calculation of hinge joints on as sembled hollow slab is based on the assumption that only shear stress transfers,which is not in accordance with actual case.Using elastic supported continuous beam method for calculation,however,will better fit the situation of practical force.