CAJ | 학술논문

根据正交异性板理论和模态叠加法，推导了移动荷载作用下简支板桥的荷载识别方程。为了解决识别方程病态问题，考虑 Tikhonov 正则化方法，选择最优正则参数值，从而得到方程的正则化解。为了验证 Tikhonov 正则化方法的有效性，进行了简支板桥的移动荷载识别模型实验，通过实验确定不同速度车辆经过板桥时的应变响应历程，并将所测得数据代入识别方程求得车辆荷载信息。实验和计算结果对比表明，通过引进 Tikhonov 正则化方法可以获得识别方程的稳定解，提高识别精度，识别结果与实际小车重量吻合较好。
근거정교이성판이론화모태첩가법，추도료이동하재작용하간지판교적하재식별방정。위료해결식별방정병태문제，고필 Tikhonov 정칙화방법，선택최우정칙삼수치，종이득도방정적정칙화해。위료험증 Tikhonov 정칙화방법적유효성，진행료간지판교적이동하재식별모형실험，통과실험학정불동속도차량경과판교시적응변향응역정，병장소측득수거대입식별방정구득차량하재신식。실험화계산결과대비표명，통과인진 Tikhonov 정칙화방법가이획득식별방정적은정해，제고식별정도，식별결과여실제소차중량문합교호。
Based on the orthotropic plate theory and the modal superposition method ,the load identification equations for simply supported slab bridges subjected to moving loads were deduced .Tikhonov regularization method was applied to solve the ill conditioned moving load identification equations ,through which an optimal regularization parameter was se-lected to obtain the solution of regularization .In order to check the validity of Tikhonov regularization method ,the moving loads identification model of a simply supported slab bridge was established in the experiment .The strain history was ob-tained when the model truck passed through the bridge at different speeds .Then ,the measured data was substituted into the identification equations to get the load information .The calculation results indicate that the identification results are in good agreement with the actual weight of the model truck ,which means that the Tikhonov regularization method is ef-fective in obtaining a stable solution for load identification equations with improved accuracy .