【摘要】：提出了由橫梁效應(yīng)引起的附加不平整度的簡化計算模型,給出了考慮橫梁效應(yīng)的車-橋耦合振動問題求解方法,解決了模態(tài)綜合法因采用截斷模態(tài)無法反映橋梁結(jié)構(gòu)如橫梁、橋面板等局部構(gòu)件振動情況的問題,并通過算例對橫梁效應(yīng)考慮與否進行了對比分析,同時引入描述橫梁效應(yīng)橋面系剛度變化幅度的無量綱參數(shù)γ,研究了其對考慮車-橋耦合振動的影響。研究結(jié)果表明:橫梁效應(yīng)與車-橋振動系統(tǒng)存在耦合關(guān)系,其效應(yīng)值隨參數(shù)γ增加而增加,呈高次變化規(guī)律。
[Abstract]:In this paper, a simplified calculation model of additional irregularity caused by beam effect is proposed, and a method to solve the vehicle-bridge coupling vibration problem considering the cross-beam effect is given. The method of modal synthesis can not reflect the bridge structure such as beam because of the truncated mode. The vibration of local members, such as deck slab, is analyzed and compared with an example of whether the cross beam effect is considered or not. At the same time, the dimensionless parameter 緯 is introduced to describe the stiffness variation amplitude of the bridge deck system under the crossbeam effect, and the effect of the parameter 緯 on the consideration of the vehicle-bridge coupling vibration is studied. The results show that there is a coupling relationship between the cross-beam effect and the vehicle-bridge vibration system, and the effect value increases with the increase of the parameter 緯.
【作者單位】： 林同h旯使こ套裳，

本文編號：2140347