【摘 要】
：
将列车、双线简支箱梁分别简化为二系悬挂多刚体体系与模态函数,推导了车桥系统动力方程,建立并验证了车桥相互作用模型,对双线简支箱梁在对开列车作用下梁体竖向动力响应规
论文部分内容阅读
将列车、双线简支箱梁分别简化为二系悬挂多刚体体系与模态函数,推导了车桥系统动力方程,建立并验证了车桥相互作用模型,对双线简支箱梁在对开列车作用下梁体竖向动力响应规律进行了研究,研究表明:对开列车作用下,桥梁动力响应与列车运行速度及入桥距离差密切相关;列车以共同速度对开时,可引起的梁体最大挠度动力系数与单线行车作用下基本一致,但梁体动力响应值相当于单线行车引起梁体动力响应值的2倍.
其他文献
Structural elements composed by riveted angles and sheets exhibit over time dangerous distortions,provoked by the rust grown inside the interstices and to i
Concrete carbonation and rebar corrosion are two main processes accounting for the life cycle operational performance degradation for reinforced concrete (R
Long-span PC continuous rigid-frame bridge with high pier has many advantages as follows: high structure rigidity,lower negative moment in girder at pier to
Construction of cable-supported bridges using highstrength cables such as for cable-stayed bridges or suspension bridges is increasing,owing to the continuo
Tension forces of hanger ropes have been recognized and utilized as an important parameter for health monitoring of suspension bridges.Conventional vibratio
During construction of a cable stayed bridge or the similar structure,the stabilizing measures by temporary tied-down cables are generally used to resist st
Since the cable is one of primary structural elements in a cable stayed-bridge,the tension force of a cable in the bridge is very important parameter to be
锚碇是重要的承力部件,合理经济的锚碇基础可以提高特大跨悬索桥方案的竞争力.本文结合工程实例,归纳了地连墙、沉井、扩大基础等目前应用较多的几种锚碇基础形式的特性及应
波纹钢腹板矮塔斜拉桥是"矮塔斜拉桥"和"波纹钢腹板预应力混凝土箱梁桥"的结合.继世界上两座波纹钢腹板矮塔斜拉桥(日本栗东桥和日见桥)建成以来,该桥型得到了工程界的广泛关
400m级跨径的连续梁桥是当前桥梁工程难以有效突破的一个技术瓶颈.基于减轻结构自重可实现提升桥梁跨径的理念,本文采用体外预应力和活性粉末混凝土(RPC)相结合的措施,并采用