交通荷载作用下古木建筑结构的振动预测方法与验证

发布时间：2018-03-22 23:26

本文选题：古木建筑　切入点：振动测试　出处：《西南交通大学学报》2017年05期 　论文类型：期刊论文

【摘要】：本文旨在建立一种交通荷载作用下古木建筑振动响应的预测方法.首先,针对本文所提预测方法在扬州准提寺藏经楼进行现场测试,根据测试数据对藏经楼的模态参数进行识别,并采用有限元软件ANSYS建立藏经楼的有限元模型;其次,通过对比交通荷载影响下藏经楼振动响应的预测值和实际测量值,对本文提出的振动预测方法的有效性进行试验验证;最后,采用该预测方法对车速相差不大、荷载幅值更大的汽车影响下的藏经楼振动响应进行预测.测试数据及数值计算结果表明:在某典型汽车影响下二楼测点处的峰值加速度的预测值与实际测量值之间相对误差仅为1.47%,说明采用本文所提振动预测方法可以有效地预测交通荷载作用下古木建筑的振动响应.
[Abstract]:The purpose of this paper is to establish a prediction method for the vibration response of ancient wooden buildings under traffic load. According to the test data, the modal parameters of the building are identified, and the finite element model of the building is established by using the finite element software ANSYS. Secondly, the prediction value of vibration response of the building under traffic load and the actual measured value are compared. The validity of the vibration prediction method proposed in this paper is verified experimentally. Finally, there is no difference between the proposed method and the speed of the vehicle. The vibration response of Tibetan warp building under the influence of vehicle with larger load amplitude is predicted. The test data and numerical calculation results show that the predicted value of peak acceleration at the second floor measurement point under the influence of a typical vehicle is compared with the actual measured value. The relative error is only 1.47, which shows that the vibration prediction method proposed in this paper can effectively predict the vibration response of ancient wooden buildings under traffic loads.
【作者单位】：北京交通大学土木建筑工程学院;扬州大学建筑科学与工程学院;
【基金】：国家自然科学基金重点项目(51338001) 国家973计划资助项目(2013CB036203)
【分类号】：TU317;TU366.2

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