钢筋混凝土柱稳定问题的图算法
发布时间：2018-12-26 07:06
【摘要】：基于柱子曲率分布的二次抛物线假设,采用虚功原理来计算二阶偏心距,得到简化的平衡方程。对于截面抗力,考虑完整的钢筋和混凝土本构关系,采用由应变计算内力的逆解方法来计算。对于极限曲率,将精确方法与我国《混凝土结构设计规范》(GB50010-2010)中的简化方法比较和分析,提出考虑配筋率的更为合理的简化公式。通过对坐标系的设计和构思,将平衡方程所有可能的解绘制成图形,计算3个基本变量和在图形中做4条辅助线,便可进行配筋设计,为设计人员提供了一种简单高效的手算工具。
[Abstract]:Based on the quadratic parabola assumption of the curvature distribution of the column, the second order eccentricity is calculated by using the virtual work principle, and the simplified equilibrium equation is obtained. For cross section resistance, the complete constitutive relation of steel bar and concrete is considered, and the inverse solution method of internal force is used to calculate the internal force from strain. For the limit curvature, the accurate method is compared with the simplified method in concrete structure Design Code (GB50010-2010) of our country, and a more reasonable simplified formula considering reinforcement ratio is put forward. Through the design and conception of the coordinate system, all the possible solutions of the equilibrium equation are drawn into graphics, three basic variables are calculated and four auxiliary lines are made in the graph, then the reinforcement design can be carried out. It provides a simple and efficient manual computing tool for designers.
【作者单位】： 昆明理工大学建筑工程学院;昆明冶金高等专科学校建工学院;
【基金】：国家自然科学基金项目(51468026,51268022) 国家青年科学基金项目(51308269)
【分类号】：TU375.3
[Abstract]:Based on the quadratic parabola assumption of the curvature distribution of the column, the second order eccentricity is calculated by using the virtual work principle, and the simplified equilibrium equation is obtained. For cross section resistance, the complete constitutive relation of steel bar and concrete is considered, and the inverse solution method of internal force is used to calculate the internal force from strain. For the limit curvature, the accurate method is compared with the simplified method in concrete structure Design Code (GB50010-2010) of our country, and a more reasonable simplified formula considering reinforcement ratio is put forward. Through the design and conception of the coordinate system, all the possible solutions of the equilibrium equation are drawn into graphics, three basic variables are calculated and four auxiliary lines are made in the graph, then the reinforcement design can be carried out. It provides a simple and efficient manual computing tool for designers.
【作者单位】： 昆明理工大学建筑工程学院;昆明冶金高等专科学校建工学院;
【基金】：国家自然科学基金项目(51468026,51268022) 国家青年科学基金项目(51308269)
【分类号】：TU375.3
【参考文献】
相关期刊论文 前6条
1 周东华;王琼芬;樊江;高琼仙;王海莹;;一新的混凝土配筋计算方法:无量纲图表法[J];工程力学;2010年01期
2 陈政清;;梁杆结构几何非线性有限元的数值实现方法[J];工程力学;2014年06期
3 耿旭阳;周东华;陈旭;姚凯程;王月s，
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