摘要
首先对叠合梁受力性能方面的研究成果进行了归纳和分析,着重分析了二次受力叠合梁在受力过程中受拉钢筋"应力超前"、后浇混凝土"受压应变滞后"和截面内力转移等的机理;在此基础上,对叠合梁的界限受压区高度、正截面受弯承载力、斜截面受剪承载力、叠合面受剪承载能力和变形计算进行了分析与综述;最后,分析了预应力RPC-NC叠合梁的应用前景,并对其设计要点进行了分析,以期推动这种新结构的发展.
Research results about the performance of mechanical behavior composite beams have been summarized and analyzed,and ＂stress ahead＂ of tension reinforcement,＂compression strain lag＂ of concrete and the mechanism of transfer of internal forces in the process of second loading were focused on.Based on this balanced depth of compression zone,normal section bending capacity,inclined section shearing capacity,shear bearing capacity of composite surface and calculation of deformation have been reviewed and analyzed.Finally,the application prospects of prestressed composite RPC-NC beams were analyzed,and its design key points were analyzed in order to promote the development of this new structure.
出处
《华北水利水电学院学报》
2010年第3期24-27,共4页
North China Institute of Water Conservancy and Hydroelectric Power
基金
河南省教育厅自然科学研究计划项目(2009A560012)
关键词
叠合梁
受力性能
设计理论
RPC
composite beam
mechanical behavior
design theories
RPC
