【摘要】 本文收集整理了135根弯曲破坏的矩形墩柱试验结果,得到了构件的弯矩—转角关系,确定了屈服和极限状态点的取值原则,假定了单调加载下变形与循环加载下变形的关系,从而对郭进提出的三维地震累积损伤模型中的参数取值进行讨论。本文通过定义整体结果损伤值偏差,以损伤偏差值最小且取值满足实际要求为原则,确定该模型中的参数β可取为0.12,β1取为1.6。或者在确定β1取值时,考虑β的不确定性,通过卡方检验确定其服从韦伯分布。更多还原

【Abstract】 This paper have collected and analyzed 135 test results of rectangular piers failed to bending and obtained the moment-rotation relationship of members. Furthermore,to discuss parameter values for the three-dimensional seismic damage model raised by Guo Jin,the paper determined the defining principle of yield and limit state points and assumed relationship of deformation under monotonic loading and deformation under cyclic loading. In this paper,the damage value deviation of all results was defined. The result indicated that the model parameter βcould be taken as 0. 12 and β1as 1. 6,in the principle of Minimizing damage deviation and conforming the requirements of actual situation. Otherwise,if the value of β1is fixed,it is recommend that the uncertainty of β should be considered,which is in accordance with Weibull distribution using the chi-square test.更多还原