CAJ | 학술논문

以纵向地震下高速铁路桥梁圆端型实体墩为工程背景，将桥墩置于全桥体系中，利用弯矩曲率关系程序和有限元软件对桥梁进行弹塑性分析计算，得出不同墩高、不同车速以及不同地震作用组合工况下的高速铁路桥墩塑性铰长度，并与既有试验结果以及各国桥梁抗震设计规范塑性铰长度计算公式相对比。计算结果表明：在设计纵向配筋率、体积含箍率、剪跨比、轴压比下的塑性铰长度经过修正可以满足要求，提出了适合铁路桥梁圆端型墩的塑性铰长度建议计算公式，为高铁桥梁设计提供参考。
이종향지진하고속철로교량원단형실체돈위공정배경，장교돈치우전교체계중，이용만구곡솔관계정서화유한원연건대교량진행탄소성분석계산，득출불동돈고、불동차속이급불동지진작용조합공황하적고속철로교돈소성교장도，병여기유시험결과이급각국교량항진설계규범소성교장도계산공식상대비。계산결과표명：재설계종향배근솔、체적함고솔、전과비、축압비하적소성교장도경과수정가이만족요구，제출료괄합철로교량원단형돈적소성교장도건의계산공식，위고철교량설계제공삼고。
Based on the high -speed bridge with round -ended solid piers subjected to longitudinal seismic effect,the piers were put into a vehicle-bridge system,and moment-curvature relationship program and finite element software were employed to analyze elastic-plastic responses of the high-speed bridge.Then the plastic hinge length of the high-speed bridge under different kinds of pier height,speed and earthquake load combina-tion was derived,which was compared with the previous experimental results and bridge seismic design codes of different countries.The calculation results show that the plastic hinge length formula can be utilized after that the previous formula is revised at the condition of designed longitudinal reinforcement ratio,volumetric lateral steel ratio,shear span ratio as well as axial compression ratio,and the computing formula of the plastic hinge length was proposed which is suitable for high-speed bridge with round-ended piers,which can provide reference for design of the high-speed railway bridge.