郑愔睿1,2，朱杰江1

(1 上海大学土木工程系，上海 200072； 2 上海同磊土木工程技术有限公司， 上海 200433)

 

［摘要］根据《型钢混凝土组合结构技术规程》（JGJ 138—2001）的基本假定，以及混凝土、钢材、钢筋材料的本构关系，提出了钢-混凝土组合截面设计的实用计算方法。首先将钢材进行单元离散，再用数值积分的方法得到各离散单元的抗弯、抗压（拉）承载力的计算公式，整个钢材的承载力即为每个离散单元承载力之和。最后根据受力平衡条件，推导出了截面的配筋量计算方程组。方程组中所有参数均在文中给出了解析表达式，使该方法具有运算高效、便于实现电算化的特点。方法不受钢-混凝土组合截面的受力状态、钢材形状的限制，能够解决《规程》中只对特定一种截面形式和受力状态进行设计的问题，适用范围广泛。

［关键词］钢-混凝土组合截面；任意形状钢材；离散单元；配筋计算

中图分类号：TU375      文献标识码：A      文章编号：1002-848X(2013)10-0036-05

 

Practical algorithm for design of steel-concrete composite section

Zheng Yinrui1,2, Zhu Jiejiang1

(1 Department of Civil Engineering, Shanghai University, Shanghai 200072, China;  2 Shanghai Tonglei Civil Engineering Technology Company, Shanghai 200433, China)

 

Abstract: According to the basic assumptions in Technical specification for steel reinforced concrete composite structures (JGJ 138—2001) and constitutive relation of concrete, steel and reinforced bar, a practical algorithm for design of steel-concrete composite section was proposed. Discrete element method was applied to the steel and the formulas for bending capacity, compressive capacity and tensile strength of each discrete unit were given by numerical integration. The sum of the bearing capacity of each discrete unit is recognized as the bearing capacity of the whole steel. Finally, the equations for reinforcement calculation according to the force balance condition were deduced. Each parameter in the equations has an analytical expression, which makes it an efficient method and facilitates the realization of computerization. Compared with the method in the specification, the proposed method has a wider range of applications for it is immune to the limits of stress status and the shape of steel.

Keywords: steel-concrete composite section; arbitrary-shaped steel; discrete unit; reinforcement calculation

作者简介：郑愔睿，博士研究生，Email：caitong1117@126.com。

 

参考文献

［1］董建菲，魏巍，辛欣. 型钢混凝土结构的研究发展及应用［J］. 陕西建筑,2009(2): 5-7.

［2］JGJ 138—2001 型钢混凝土组合结构技术规程［S］. 北京:中国建筑工业出版社，2001.

［3］管仲国，黄承逵，王丹，等. 钢筋混凝土异形柱双向偏心承载力高效算法与程序设计［J］.工程力学,2006,23(4): 134-139.

［4］蔡健，郑宇，杨春，等.箱形型钢混凝土梁的试验研究［J］. 华南理工大学学报:自然科学版,2002,30(7): 52-56.

［5］中野昭郎.非对称型钢混凝土梁的试验［J］.谢大璋，译. 铁道建筑,1995(2): 27-33.

［6］王宇航，樊健生，郭亚飞，等.异形型钢混凝土柱承载能力的试验及分析［J］.清华大学学报：自然科学版,2010,50(6): 810-814.

［7］薛永林，王新亭.钢骨混凝土梁抗弯承载力计算的规范比较［J］.低温建筑技术,2005(1):45-46.