铁道学报
鐵道學報
철도학보
2014年
3期
100-105
,共6页
钢-混凝土结合梁%动力特性%阻尼%自振频率%正交条件%试验研究
鋼-混凝土結閤樑%動力特性%阻尼%自振頻率%正交條件%試驗研究
강-혼응토결합량%동력특성%조니%자진빈솔%정교조건%시험연구
steel-concrete composite beam%dynamic characteristics%damp%natural frequency%orthogonal con-ditions%experimental study
考虑钢梁与混凝土板之间的相对滑移，对考虑阻尼的钢-混凝土结合梁基本动力方程进行推导，采用分离变量法得到简支结合梁自振频率与振型的解析解，并对其正交条件进行探讨。将理论分析结果、数值结果及试验结果进行对比分析，结果吻合良好。分析结果表明：由于柔性抗剪连接件的存在，结合梁中钢梁与混凝土板之间发生相对滑移，其动力平衡方程形式更为复杂，表现出与普通梁不同的动力特性。
攷慮鋼樑與混凝土闆之間的相對滑移，對攷慮阻尼的鋼-混凝土結閤樑基本動力方程進行推導，採用分離變量法得到簡支結閤樑自振頻率與振型的解析解，併對其正交條件進行探討。將理論分析結果、數值結果及試驗結果進行對比分析，結果吻閤良好。分析結果錶明：由于柔性抗剪連接件的存在，結閤樑中鋼樑與混凝土闆之間髮生相對滑移，其動力平衡方程形式更為複雜，錶現齣與普通樑不同的動力特性。
고필강량여혼응토판지간적상대활이，대고필조니적강-혼응토결합량기본동력방정진행추도，채용분리변량법득도간지결합량자진빈솔여진형적해석해，병대기정교조건진행탐토。장이론분석결과、수치결과급시험결과진행대비분석，결과문합량호。분석결과표명：유우유성항전련접건적존재，결합량중강량여혼응토판지간발생상대활이，기동력평형방정형식경위복잡，표현출여보통량불동적동력특성。
Considering the slip between the steel girder and concrete slab,the basic equations governing the mo-tion of steel-concrete composite beams with damping were deduced with the direct balanced method.By varia-ble separation approach,the analytical solutions to natural frequencies and modes of vibration of simply-sup-ported composite beams were obtained,and the orthogonal conditions were discussed.By comparison,the the-oretical,numerical and experimental results were found to agree well.The analysis results also show that due to the flexible shear connectors,the relative slip occurs between the steel girder and concrete slab of the com-posite beams and the dynamic equilibrium equations become more complex and demonstrate dynamic character-istics different from conventional beams.
