建筑结构学报2018，Vol.39Issue(4)：74-81,8.DOI:10.14006/j.jzjgxb.2018.04.009
强震作用下大跨度钢筋混凝土输煤栈桥抗震性能研究
Seismic performance of large span RC coal trestle under strong earthquakes
摘要
Abstract
ARC coal trestle was researched in this research program.The field self-vibration frequency measurement were used.The finite element software ABAQUS was used to establish the whole structural numerical model of'bridge truss-frame column'.The numerical model was corrected by the measured vibration frequency.The seismic performance of the large span coal conveying trestle under 7 degree of rare earthquake was studied using the corrected numerical model.Test and calculation results have shown that:the coal trestle model using elasto-plastic time history analysis can yield numerical simulation results consistent with experimental results,which proves the credibility and efficiency of the numerical model.The frame columns are the main seismic fortification line.The elasto-plastic displacement of horizontal vibration is relatively great and dissipates most seismic energy of the trestle bridge truss,showing good displacement ductility and energy dissipation capacity.The coal trestle bridge truss has high seismic bearing capacity.The lateral horizontal displacement of frame column can be inhibited,indicating the trestle bridge truss has obvious deformation reduction effect and can be the second seismic line.The biggest elasto-plastic inter-story displacement angle under 7 degree of rare earthquake is 1/107.The maximum deflection to span ratio of bridge truss is 1/1 984.It meets the relevant codes.The coal trestle has good seismic performance without strengthening.关键词
大跨度输煤栈桥/振动频率/现场实测/数值模型/动力响应/抗震性能Key words
large span coal trestle/vibration frequency/field measurement/numerical model/dynamic response/seismic performance分类
建筑与水利引用本文复制引用
吴王平,刘书贤,刘书会,魏晓刚,王志强..强震作用下大跨度钢筋混凝土输煤栈桥抗震性能研究[J].建筑结构学报,2018,39(4):74-81,8.基金项目
国家自然科学基金项目(51474045,51174038),辽宁省教育厅科学技术研究指导性项目(L2012111),中国煤炭工业协会科学技术研究指导性计划项目(MTKJ2014-192,MTKJ2012-319). （51474045,51174038）
