相邻梁段周期比对伸缩缝处的碰撞响应分析
发布时间：2019-03-01 09:33
【摘要】：针对相邻两联连续梁桥伸缩缝处的碰撞现象,基于其周期不一致而表现出的动力差异性,进行动力时程分析,采用直接积分法研究了地震作用下相邻联的非同向振动和伸缩缝处的碰撞响应。分析结果表明:不同周期比的相邻梁体,在地震动作用下产生的碰撞响应不同,加速度峰值小持续时间长的地震波对伸缩缝处的碰撞响应较小;碰撞对严重不同向振动的相邻两联(T2/T10.5)的地震响应影响很大,随着相邻两联周期比的增大,碰撞对结构地震反应影响逐渐减小。
[Abstract]:Aiming at the collision phenomenon at the expansion joint of two adjacent continuous beam bridges, the dynamic time history analysis is carried out on the basis of the dynamic difference of the two adjacent continuous beam bridges due to the inconsistency of their periods. The direct integral method is used to study the impact response of adjacent non-isotropic vibration and expansion joints under earthquake. The results show that the impact response of adjacent beams with different period ratios is different under earthquake action, and the impact response of seismic waves with small acceleration peak value and long duration is smaller than that of adjacent beams with different period ratios. The impact of the collision on the seismic response of the adjacent two pairs (T2/T10.5) with severe different vibration is significant. With the increase of the period ratio of the adjacent two pairs, the impact of the collision on the seismic response of the structure decreases gradually.
【作者单位】： 长安大学公路学院;中国地震局工程力学研究所;
【基金】：国家自然科学基金(51408040,51408042) 中央高校基本科研业务费专项资金(2013G1211012)联合资助
【分类号】：U441;U443.31
[Abstract]:Aiming at the collision phenomenon at the expansion joint of two adjacent continuous beam bridges, the dynamic time history analysis is carried out on the basis of the dynamic difference of the two adjacent continuous beam bridges due to the inconsistency of their periods. The direct integral method is used to study the impact response of adjacent non-isotropic vibration and expansion joints under earthquake. The results show that the impact response of adjacent beams with different period ratios is different under earthquake action, and the impact response of seismic waves with small acceleration peak value and long duration is smaller than that of adjacent beams with different period ratios. The impact of the collision on the seismic response of the adjacent two pairs (T2/T10.5) with severe different vibration is significant. With the increase of the period ratio of the adjacent two pairs, the impact of the collision on the seismic response of the structure decreases gradually.
【作者单位】： 长安大学公路学院;中国地震局工程力学研究所;
【基金】：国家自然科学基金(51408040,51408042) 中央高校基本科研业务费专项资金(2013G1211012)联合资助
【分类号】：U441;U443.31
【共引文献】
相关期刊论文 前10条
1 黎明发,顾伯达;水力测功器转子的模态分析[J];湖北工学院学报;2002年02期
2 刘喜平;;带加强层的高层框筒结构的动力特性分析[J];华北科技学院学报;2010年01期
3 陈树勋;;弹性动力学中哈密尔顿原理和拉格朗日方程的推导[J];唐山工程技术学院学报;1988年03期
4 黄永强，赵晓云，陈树勋;弹性动力学中的瑞利－里兹法[J];河北理工学院学报;1996年02期
5 彭如海,刘杰,彭R，
本文编号：2432305
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2432305.html
