连续双向板支座负弯矩钢筋的断点

Negative Bending Moment Reinforcement Cut Point of Concrete Slab

讨论了钢筋砼连续双向板当棋盘式布置活荷载时的破坏构及其与负弯矩钢筋断点的关系．通过塑性理论分析（屈服线法）给出负弯矩钢筋断点的解析式子．

This paper analyses the failure mechanism of concrete continuous slab fored by two directions with chessboard live load and the relations of the failure mechanism to cut point of negative bending moment reinforcement. And the analytical formula of cut point of negative bending moment reinforcement is given for design reference