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正交梁刚度对板筋参与梁端抗弯能力的影响研究

DOI: 10.13197/j.eeev.2014.02.58.wangsg.008, PP. 58-63

Keywords: RC框架结构,正交梁刚度,板筋,梁端抗弯能力

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Abstract:

针对影响板筋参与作用的因素之一――正交梁刚度开展研究,通过5个侧向荷载作用下带现浇楼板RC空间框架结构模型的有限元仿真模拟,考察正交梁刚度变化对现浇楼板板内钢筋参与框架梁端抗负弯矩能力的影响程度,寻找正交梁刚度对框架结构破坏形式的影响规律。研究结果表明正交梁是否存在对板筋参与作用的影响大于正交梁刚度变化的影响;板筋对框架梁端抗弯的参与作用随正交梁刚度的增大而增大,且两者为非线性关系;正交梁刚度大的结构整体性能强于正交梁刚度小的结构,对板筋的锚固性更好,因而参与梁端抗弯的程度更大。

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