The Jinhua Bridge in Deyang City was taken as an example to analyze the actual seismic damage of spandrel columns, then using the nonlinear calculation model under the action of earthquake, an IDA-based method for evaluating the seismic performance of spandrel columns strengthened by reinforced concrete jackets was established. The analysis results showed that the shear-span ratio has a significant effect on the seismic performance of spandrel columns. The column with high shear-span ratio is relatively poor in seismic performance, and the spandrel column is a vulnerable component under earthquake action. The seismic performance of spandrel columns strengthened by jackets is improved obviously:the vulnerability is significantly reduced, and the ductility is improved to a certain extent. The analysis results are consistent with those of seismic damage survey, which can provide a reference for the seismic evaluation of spandrel columns.
唐堂,钱永久,王磊.基于IDA的套箍加固拱上立柱抗震性能评估[J].地震工程学报,2021,43(5):1168-1175. TANG Tang, QIAN Yongjiu, WANG Lei. Seismic performance of spandrel columns strengthened by jackets based on the incremental dynamic analysis[J]. China Earthquake Engineering Journal,2021,43(5):1168-1175.复制