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INFLUENCE OF MEASUREMENT ERRORS ON STRUCTURAL DAMAGE IDENTIFICATION USING ARTIFICIAL NEURAL NETWORKS 总被引：2，自引：0，他引：2
ＩＮＴＲＯＤＵＣＴＩＯＮＦｒｏｍｔｈｅｖｉｅｗｐｏｉｎｔｏｆｓｅｒｖｉｃｅａｂｉｌｉｔｙａｎｄｓａｆｅ ｔｙｏｆｓｔｒｕｃｔｕｒｅｓ,ｔｈｅｄｅｔｅｃｔｉｏｎｏｆｓｔｒｕｃｔｕｒａｌｄａｍ ａｇｅｉｓａｎｉｍｐｏｒｔａｎｔｉｓｓｕｅｆｏｒｃｉｖｉｌｅｎｇｉｎｅｅｒｓ.Ｉｎｔｈｅｐａｓｔｔｗｏｄｅｃａｄｅｓ,ｍａｎｙｅｆｆｏｒｔｓｈａｖｅｂｅｅｎｍａｄｅｔｏｍｏｎｉｔｏｒｓｔｒｕｃｔｕｒａｌｉｎｔｅｇｒｉｔｙｕｓｉｎｇｃｈａｎｇｅｓｉｎｍｏｄａｌｐａｒａｍｅｔｅｒｓｔｈｒｏｕｇｈｖｉｂｒａｔｉｏｎｍｅ… 相似文献
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This paper presents a nonlinear dynamic model for simulation and analysis of a kind of parametrically excited vibration of
stay cable caused by support motion in cable-stayed bridges. The sag, inclination angle of the stay cable are considered in
the model, based on which, the oscillation mechanism and dynamic response characteristics of this kind of vibration are analyzed
through numerical, calculation. It is noted that parametrically excited oscillation of a stay cable with certain, sag, inclination
angle and initial static tension force may occur in cable-stayed bridges due to deck vibration under the condition that the
natural frequency of a cable approaches to about half of the, first model frequency of the bridge deck system. A new vibration
control system installed on the cable anchorage is proposed as a possible damping system to suppress, the cable parametric
oscillation. The numerical calculation results showed that with the use of this damping system, the cable oscillation due
to the vibration of the deck and/or towers will be considerably reduced.
Project supported by National Natural Science Foundation of China (No. 59978044) 相似文献
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ＩＮＴＲＯＤＵＣＴＩＯＮＣａｂｌｅ ｓｔａｙｅｄｂｒｉｄｇｅｓａｒｅｗｉｄｅｌｙａｐｐｌｉｅｄｉｎｍｏｄｅｒｎｂｒｉｄｇｅｓｔｒｕｃｔｕｒａｌｓｙｓｔｅｍ .Ｔｈｅｌａｒｇｅｓｔｓｐａｎｏｆｃａｂｌｅ ｓｔａｙｅｄｂｒｉｄｇｅｉｓｃｌｏｓｅｔｏ 1 0 0 0ｍｗｈｅｎｍａｎｙｎｅｗｍａｔｅｒｉａｌｓａｎｄｔｅｃｈｎｏｌｏｇｉｅｓａｒｅａｐｐｌｉｅｄ.Ｔｈｅｓｔａｙｃａｂｌｅｓａｒｅｉｍｐｏｒｔａｎｔｂｒｉｄｇｅｓｔｒｕｃｔｕｒｅｃｏｍｐｏｎｅｎｔｓｍｏｓｔｐｒｏｎｅｔｏｅｘｈｉｂｉｔｈｉｇｈａｍｐｌｉｔｕ… 相似文献
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归有光的《项脊轩志》通过记叙一些日常生活和家庭琐事，来表现作者对母亲、祖母和妻子的深情，但从文中的“既为此志”来看，此文并非一气而成，后两自然段为后期的补记部分。那么作者何时写这部分附记的呢？ 相似文献
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