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在弹性体变形理论基础上,利用力的平衡原理及变形协调条件,建立负弯矩作用下同时考虑水平滑移和竖向掀起的钢-混凝土组合梁力学模型,通过推导对应的微分方程,编制计算程序求解,得到负弯矩作用下组合梁栓钉掀起力的计算表达式。计算结果表明:在同一荷载作用下,单个栓钉掀起力随着栓钉间距的增大而增大。计算与试验结果的对比表明:二者吻合较好,该计算方法准确、可靠,可为考虑竖向掀起作用的连续组合梁负弯矩区界面交互作用研究提供理论参考。
Based on the theory of elastic deformation, the mechanics model of steel-concrete composite beam considering horizontal slip and vertical lift is established under the action of negative moment under the balance principle of force and the deformation coordination condition. By deriving the corresponding differential equation, The calculation program solves the calculation expression of the peg of the composite beam under the action of negative moment. The calculation results show that under the same load, the lifting force of a single stud increases with the increase of the stud spacing. The comparison between the calculated and experimental results shows that the agreement between them is good, and the calculation method is accurate and reliable, which can provide theoretical reference for the study of the interaction of the negative moment area interface of the continuous composite beam considering the vertical lifting effect.