负弯矩作用下钢-混凝土组合梁掀起力计算研究
doi: 10.13204/j.gyjz201510031
THEORETICAL ANALYSIS OF UPLIFT FORCE OF STEEL-CONCRETE COMPOSITE BEAMS UNDER NEGATIVE MOMENT
-
摘要: 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。Abstract: Based on the elastic deformation theory,a mechanical model of composite beam under negative moment was established by considering the surface slip and vertical uplift effects. The differential equation was derived by using the principle of force equilibrium and deformation compatibility condition. Calculation program was developed and obtained the formula of vertical uplift force under negative moment. The results showed that composite beam under same load condition,the uplift force of single stud was increased with the increasing of distance between studs. All the numerical results were verified by comparing with experiment results to illustrate the accuracy and reliability of the calculation method. The result provided a theoretical basis for interface study considering the surface slip and vertical uplift effects of continuous composite beam.
-
Key words:
- composite beam /
- negative moment /
- stud /
- vertical uplift force
期刊类型引用(4)
1. 朱伟庆,张亚飞,张丽华,贾金青,殷天扬. 盐冻环境下混凝土桥梁服役性能演变规律及耐久性评价指标综述. 长安大学学报(自然科学版). 2025(01): 69-91 . 百度学术
2. 宋洋,罗志恒,张波,张宇,朱敏. 裂隙位置对类岩体短柱单轴压缩破坏形态影响. 山东大学学报(工学版). 2023(05): 121-131 . 百度学术
3. 牛荻涛,杨德柱,罗大明. 混凝土结构耐久性评定方法体系. 建筑结构. 2021(17): 115-121+114 . 百度学术
4. 李世兵,李海锋,刘航. 浅谈市政桥梁施工混凝土裂缝成因及其防治措施. 城市建设理论研究(电子版). 2020(08): 49 . 百度学术
其他类型引用(3)
-

计量
- 文章访问数: 104
- HTML全文浏览量: 7
- PDF下载量: 127
- 被引次数: 7