- 摘 要
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何培玲 趙艷靜 王振武
（天津大學土木系 300072）[提要] 通過對8根十字形截面鋼筋砼柱在軸向力及雙向彎矩共同作用下的反復加載試驗，研究此類柱的延性及滯回曲線的一般規(guī)律。在此基礎上，采用全過程非線性分析方法，編制了相應的電算程序，對其延性性能做了進一步的理論分析。最后，提出了十字形截面鋼筋砼雙向壓彎柱截面延性的計算公式，并對軸壓比、箍筋間距等一系列構造要求提出了設計建議。
[關鍵詞] 鋼筋砼 十字形截面柱 非線性分析 荷載角 軸壓比 曲率延性Based on the experimental study of 8 R.C.short columns with "+" shaped cross section subjected to axial compression and cyclically biaxial bending, this paper reveals the general regularity of ductility and hysteretic behavior of "+" shaped R.C. columns under axial compression and biaxial bendinf;.On the basis of above mentioned works, by using the nonlinear analysis method of complete response process, a special computer program is compiled. The theoretical analyses of deformation behavior for R.C. columns with "+" shaped cross section subjected to axial compression and biaxial bendinfl; are camed out. Finally, the calculation formulas of curvature-ductility for "+" shaped cross section are given. Based on the present investigation, some designing suggestions relating to axial compression ratios as well as spacing of stirrups are proposed.
Keywords: "+"shaped cross section; R.C.columns; nonlinear analysis; angles of loading; axial compression - ratio; curvature-ductility
