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首页> 外文期刊>Journal of Sound and Vibration >The effect of cable loosening on seismic response of a prestressed concrete cable-stayed bridge
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The effect of cable loosening on seismic response of a prestressed concrete cable-stayed bridge

机译：电缆松动对预应力混凝土斜拉桥地震响应的影响

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In conventional non-linear seismic analyses of cable-stayed bridges, the non-linear characteristics of the girders, stay cables and towers are considered. The non-linearity caused by cable loosening should also be considered because a large axial force fluctuation is generated in the cables of a prestressed concrete (PC) cable-stayed bridge that is subjected to strong seismic motion. In this paper, the possibility of the cable loosening in a PC cable-stayed bridge is discussed by using a cable model that can express the cable loosening. Furthermore, the effect of the cable loosening on the responses of the cables, girder and towers is evaluated using the mean value for three seismic waves. Numerical analytic results imply that the cable loosening appears in the bottom cables of the multi-cable system and the dynamic response of the bridge is slightly increased. (C) 2003 Elsevier Science Ltd. All rights reserved. [References: 17]
机译：在斜拉桥的常规非线性地震分析中，考虑了大梁，斜拉索和塔的非线性特性。还应考虑由电缆松动引起的非线性，因为在承受强烈地震运动的预应力混凝土（PC）斜拉桥的电缆中会产生很大的轴向力波动。在本文中，通过使用可表示电缆松动的电缆模型，讨论了PC斜拉桥中电缆松动的可能性。此外，使用三个地震​​波的平均值评估电缆松动对电缆，大梁和塔架响应的影响。数值分析结果表明，电缆松动出现在多电缆系统的底部电缆中，桥的动力响应略有增加。 （C）2003 Elsevier ScienceLtd。保留所有权利。 [参考：17]

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