边支承现浇混凝土空心板支座刚度分析

The stiffness analysis on bearing of cast-in-situ concrete hollow slab that formed by edge supporting

介绍了边支承现浇混凝土空心板支座刚度分析方法,用塑性铰线法计算混凝土空心板的极限荷载,用2种破坏机构来分别计算混凝土空心板极限荷载,其中一种破坏机构的塑性绞线通过边支承的梁,而另一种破环机构是典型的双向板破环,比较2种荷载的大小,规定发生破环机构为双向板破坏,则达到了现浇混凝土梁的支承作用,从而计算出支座刚度的大小。

The paper introduces the stiffness analysis on bearing of cast-in-situ concrete hollow slab that formed by side supporting,using the method of yield-line theory to reckon up ultimate load of the concrete hollow slab,adopting the two failure mechanism to calculate ultimate load of the concrete hollow slab,one the of yield-line of failure mechanism according the beam of side supporting,while the other one is the typical destruction of two-way slab,comparing the size of two load,regulating the failure mechanism is typical destruction of two-way slab,then attaining the supporting role which casting concrete beam has played,thus can calculate the size of support stiffness.