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工程实践当中,根据桥梁的力学性能、使用性能所确定的某种桥梁体系,往往出现某个特定截面不能满足要求的情况,这就要求设计者调整某些参数以达到要求。结合实际工程,在常规设计参数范围内取值,采用时程分析方法,按纵桥向和横桥向输入地震波进行分析,获得关心截面矢量随各参数变化的规律,对比分析不同参数作用下结构的抗震性能。结果表明:调整上、下部结构设计参数,均能在一定程度上提高结构特定矢量的抗震性能,简化了工程实践设计,为同等类型桥梁的快速设计提供参考。
In engineering practice, some kind of bridge system, which is determined according to the mechanical performance and service performance of the bridge, often can not meet the requirements of a particular section, which requires the designer to adjust certain parameters to meet the requirements. Combined with the actual project, the value of the conventional design parameters, the use of time-history analysis method, according to the longitudinal and transverse bridge input seismic wave analysis, cross-sectional vector to obtain the law of change with each parameter, comparative analysis of the structure under different parameters Seismic performance. The results show that adjusting the design parameters of the upper and lower structures can all improve the seismic performance of the structure-specific vector to some extent, simplifying the engineering practice design and providing a reference for the rapid design of the same type of bridges.