公路交通技术
公路交通技術
공로교통기술
TECHNOLOGY OF HIGHWAY AND TRANSPORT
2015年
3期
52-56
,共5页
桥梁工程%人行桥%空间有限元%人致振动%行人舒适度%TMD
橋樑工程%人行橋%空間有限元%人緻振動%行人舒適度%TMD
교량공정%인행교%공간유한원%인치진동%행인서괄도%TMD
bridge project%pedestrian bridge%space finite element%pedestrian -induced vibration%pedestrian comfort%TMD
人行桥的主要荷载源于行人和非机动车，对于大跨径轻柔桥梁结构，在行人激励之下更容易发生大幅振动，引起舒适度问题。依托国内某大跨径人行提篮拱桥，参考国外人行桥设计指南，通过有限元时程分析方法，计算获得不同荷载激励下结构最大加速度响应时程曲线，进行行人振动舒适度评价。另外，针对不同模态设计相应的TMD减振系统，并进行减振效果分析。
人行橋的主要荷載源于行人和非機動車，對于大跨徑輕柔橋樑結構，在行人激勵之下更容易髮生大幅振動，引起舒適度問題。依託國內某大跨徑人行提籃拱橋，參攷國外人行橋設計指南，通過有限元時程分析方法，計算穫得不同荷載激勵下結構最大加速度響應時程麯線，進行行人振動舒適度評價。另外，針對不同模態設計相應的TMD減振繫統，併進行減振效果分析。
인행교적주요하재원우행인화비궤동차，대우대과경경유교량결구，재행인격려지하경용역발생대폭진동，인기서괄도문제。의탁국내모대과경인행제람공교，삼고국외인행교설계지남，통과유한원시정분석방법，계산획득불동하재격려하결구최대가속도향응시정곡선，진행행인진동서괄도평개。령외，침대불동모태설계상응적TMD감진계통，병진행감진효과분석。
Main loads of pedestrian bridges come from pedestrians and non-motor vehicles,and large-span soft bridge structures under motivation of pedestrians are more vulnerable to large vibration to cause comfort problem.Dependent on a domestic large-span pedestrian X-style arch bridge and by reference to foreign guide for design of pedestrian bridges, this paper calculates and obtains the maximum. acceleration response time-history curve of structures under motivation of different loads by means of finite element time -history analysis method to evaluate comfort under pedestrian vibration.in addition,the paper designs corresponding TMD vibration damping systems against different modes and analyzes damping effect.
