当跨高比ln/h≤2.5时：

                                                                                                                                    (5.2.4-21)

式中：

         ln —— 连梁的净跨。

2. 斜截面受剪承载力计算

（1）非抗震设计

当跨高比ln/h≥5时：同框架梁

当跨高比ln/h<5时：连梁斜截面受剪承载力应按下式计算：

                                                                                                                    (5.2.4-22)

（2）抗震设计

当跨高比ln/h≥5时：同框架梁

当跨高比ln/h<5时：连梁斜截面受剪承载力应按下式计算 ：

当跨高比2.5<ln/h<5时：

                                                                                                         (5.2.4-23)

                                                                                               (5.2.4-24)