- 摘 要
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（石家莊經濟學院勘查技術與工程學院， 石家莊 050031）
［摘要］為了研究高軸壓比下鋼筋混凝土柱的變形，對4個鋼筋混凝土柱分別進行低周反復和單調加載試驗。通過對塑性鉸區(qū)域局部變形的測量，研究了塑性鉸區(qū)域的彎曲變形、剪切變形和粘結滑移變形所產生的側移在柱中總側移中所占的比例，結果表明：即使對于剪跨比較大的試件，其剪切變形和粘結滑移變形仍不能簡單地被忽略。根據試驗結果，提出了等效屈服曲率和極限曲率的計算方法，推導出了考慮彎曲變形、剪切變形和粘結滑移變形影響的極限位移計算公式，計算結果與試驗結果符合較好。
［關鍵詞］鋼筋混凝土柱; 極限位移; 擬靜力試驗
中圖分類號：TU375.3 文獻標識碼：A 文章編號：1002-848X(2014)15-0066-05
Calculation method and experimental study on the ultimate displacement of reinforced concrete columns
Xie Yongping, Jia Lei
(College of Exploration Technology and Engineering, Shijiazhuang University of Economics, Shijiazhuang 050031, China)
Abstract: In order to study the deformation of reinforced concrete columns under high axial compression ratio, low cyclic loading test and monotonic loading test were conducted on four reinforced concrete columns. Through the measurement of plastic hinge local deformation, the lateral displacement caused by bending deformation, shear deformation and bond-slip deformation in plastic hinge region was studied as well as the proportion in the total lateral of the column. Results show that the shear deformation and bond-slip deformation still can not be simply ignored even for the specimens with large shear-span ratio. According to the test results, calculation methods of the equivalent yield curvature and ultimate curvature were proposed. A calculation formula of ultimate displacement considering the bending deformation, shear deformation and bond-slip deformation was derived, and the calculation results coincide well with the test results.
Keywords: reinforced concrete column; ultimate displacement; pseudo-static test
作者簡介：解詠平，博士，講師，Email：axypa@163.com。
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