摘要
为研究相同线刚度情况下不同截面形式的框架梁对框架结构在实现"强柱弱梁"上的差别,在ABAQUS中建立2种不同截面形式的框架结构,即普通梁结构和宽扁梁结构,通过对其在基底剪力、梁柱钢筋应力、裂缝开展情况和楼板钢筋应力分布方面的对比,考察了2种不同框架梁截面形式下在实现"强柱弱梁"上的异同,考察了两种截面形式对带现浇楼板的框架结构板内钢筋参与框架梁端抵抗负弯矩能力的影响。结果表明,宽扁梁结构较普通梁结构更易实现"强柱弱梁",单侧与楼板相连的框架梁较两侧与楼板相连的框架梁更易实现"强柱弱梁"。与本文模型类似的结构,可将普通梁结构的有效翼缘宽度取为900mm、宽扁梁结构的有效翼缘宽度取为1 100mm。
In order to investigate the differences between section forms of frame beam in realization of strong column and weak beam, two frame structures with beam section forms of ordinary beam and flat beam are simulated in ABAQUS. Via the comparison of base shear, reinforcement stress of beam, column and slab, crack development between the two models, similarities and differences are investigated. Moreover, the influence of beam section form on participation of slab reinforcement in resistance to bending moment of frame beam is studied. The result shows that the frame structure with flat beam section can actualize strong column and weak beam principle better than that with ordinary beam; the frame beam connected with two sides of slab can actualize strong column and weak beam principle better than that connected with just one side of slab ; a frame structure which is similar with models in this paper, the effective flange width can be taken as 900ram for ordinary beam and 1100mm for flat beam in RC frame structure.
出处
《地震工程与工程振动》
CSCD
北大核心
2013年第6期95-101,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金资助项目(51208114)
福建省自然科学基金资助项目(2013J05070)
福州大学科技发展基金资助项目(2012-XQ-34)
关键词
RC框架结构
宽扁梁
普通梁
强柱弱梁
有效翼缘宽度
reinforced concrete frame structure
flat beam
ordinary beam
strong column weak beam
effectiveflange width
