摘要
为了研究高轴压比下钢筋混凝土柱的变形,对4个钢筋混凝土柱分别进行低周反复和单调加载试验。通过对塑性铰区域局部变形的测量,研究了塑性铰区域的弯曲变形、剪切变形和粘结滑移变形所产生的侧移在柱中总侧移中所占的比例,结果表明:即使对于剪跨比较大的试件,其剪切变形和粘结滑移变形仍不能简单地被忽略。根据试验结果,提出了等效屈服曲率和极限曲率的计算方法,推导出了考虑弯曲变形、剪切变形和粘结滑移变形影响的极限位移计算公式,计算结果与试验结果符合较好。
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 bondslip deformation was derived, and the calculation results coincide well with the test results.
出处
《建筑结构》
CSCD
北大核心
2014年第15期66-70,共5页
Building Structure
关键词
钢筋混凝土柱
极限位移
拟静力试验
reinforced concrete column
ultimate displacement
pseudo-static test
