篐筋能有效提高其破坏荷载，但对初裂荷载提高不明显。
The presence of hoop steel can effectively improve damage load of joint, but for the early cracked load is not obvious .
提出屈服曲率和极限曲率(并考虑箍筋影响)的计算公式，与试验结果作比较，验证公式的有效性。
The formulas to calculate the yield and ultimate curvature of beam are worked out considering the action of the stirrup, and the accuracy of the formula was proved by experiment.
结论只要叠合接触比例在27%以上，叠合接触面经有效粗糙处理和配筋，就能保证叠合接触面的抗剪刚度。
This paper draws the conclusion that as long as the laminate area proportion reaches more than 27%, and laminate area is roughed quite well, the shear stiffness can be guaranteed.
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