钢筋混凝土单跨排架的总承载力及其变阶柱的计算长度

doi:10.11835/j.issn.1674-4764.1989.02.009

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钢筋混凝土单跨排架的总承载力及其变阶柱的计算长度
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                        10.11835/j.issn.1674-4764.1989.02.009
                    
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THE OVERALL LOAD-BEARING CAPACITY AND EFFECTIVE LENGTHS OF STEPPED COLUMNS OF PINNED R.C.PORTAL FRAMES WITH FIXED BASES

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摘要:

为了改进排架柱二阶弯矩的近似计算方法,本文在考虑了材料非线性及几何非线性的前提下对钢筋混凝土变阶柱单跨排架进行了全过程分析,再从单跨排架整体受力性能出发找出结构总承载力为最小的荷载形式及破坏机构,并求出各控制截面中相应的非线性二阶弯矩及与规范η值公式相呼应的计算长度.最后提出了单跨排架柱上下柱计算长度的建议值.

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In this paper,a computer program for nonlinear analysis ofa special frame is developed.The frame has all columns fixed at the base and hinged at the top.By taking the frame as a whole,the behavior ofthe frame is studied from the test results of three specimens of the frame andlarge amount of results of computer program.The minimun value of total sumof vertical loads sustained by the frame is found and a new method of deter-mining the effective length of stepped columns is suggested.

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吴向元,白绍良.钢筋混凝土单跨排架的总承载力及其变阶柱的计算长度[J].土木与环境工程学报（中英文）,1989,11(2). Wu Xiangyuan, Bai Shaoliang. THE OVERALL LOAD-BEARING CAPACITY AND EFFECTIVE LENGTHS OF STEPPED COLUMNS OF PINNED R. C. PORTAL FRAMES WITH FIXED BASES[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,1989,11(2).10.11835/j. issn.1674-4764.1989.02.009

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