| 正常使用状态下部分预应力砼叠合梁刚性计算新方法的探讨 |
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| 引用本文： | 尚自端,吕志锋,王秀格. 正常使用状态下部分预应力砼叠合梁刚性计算新方法的探讨[J]. 工程建设与设计, 2005, 20(5): 22-24 |
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| 作者姓名： | 尚自端 吕志锋 王秀格 |
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| 作者单位： | 北京科技大学土木与环境工程学院,北京,100083;北京科技大学土木与环境工程学院,北京,100083;北京科技大学土木与环境工程学院,北京,100083 |
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| 摘 要： | 分析了二次受力情况下部分预应力砼叠合梁的受力特点,探讨了这种构件刚度的计算方。结果表明,在正常使用状态下由于预制断面上“荷载预应力”的残存,增大了断面的有效受压区面积,从而提高了叠合构件的初期抗弯刚度。研究结果给出的刚度计算方法,合理地解决了“二次受力”叠合梁在正常使用状态下的刚度计算问题,其计算结果与试验结果吻合较好。
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| 关 键 词： | 部分预应力砼叠合梁 二次受力 荷载预应力 应变 刚性 |
| 文章编号： | 1007-9467(2005)05-0022-03 |
| 修稿时间： | 2004-12-17 |
Investigation of Stiffness Calculation of PCaPPC Beams Subjected to Service Load |
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| SHANG Zhiduan,LV Zhifeng,WANG Xiuge. Investigation of Stiffness Calculation of PCaPPC Beams Subjected to Service Load[J]. Construction & Design for Project, 2005, 20(5): 22-24 |
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| Authors: | SHANG Zhiduan LV Zhifeng WANG Xiuge |
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| Abstract: | This paper gave precise section analysis method for PCaPPC beams subjected to service load. As the results of theoretical analysis and experimental research, PCaPPC beam often exhibit greater stiffness than full cast-in-place beam in service stage. Calculated stiffness based on recommended method agreed well with those of measured values. |
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| Keywords: | pre-cast partially pre-stressed composite beams secondary loaded residual stress strain stiffness |
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