预制系梁刚度对双柱式桥墩抗震性能影响分析  

ANALYSIS OF INFLUENCE OF PRECAST TIE BEAM STIFFNESS ON SEISMIC PERFORMANCE OF DOUBLE COLUMN PIER

作　　者：王乃勇 Wang Nai-yong

机构地区：[1]中铁二十三局第六工程有限公司,重庆401121

出　　处：《建筑技术开发》2024年第1期131-133,共3页Building Technology Development

摘　　要：为探究预制系梁刚度对双柱式桥墩抗震性能的影响,利用ABAQUS软件建立小碑村大桥带装配式系梁的下部结构模型,改变系梁的材质与系梁截面内尺寸,建立了9个有限元模型,用位移加载的形式对其进行拟静力分析,发现其刚度变化对于结构抗震性能的影响较小,当尺寸变化达203%时,结构抗震性能的变化仍不显著,说明本结构对于预制系梁的刚度变化不敏感。结果表明进行预制系梁材质及尺寸设计时,有较宽的可行范围,应考虑成本、构造要求及施工方法等因素综合选取。In order to explore the influence of the stiffness of prefabricated tie beams on the seismic performance of double-column pier,a substructure model of the prefabricated tie beams of a bridge belt was established by using ABAQUS software,and nine finite element models were established by changing the material of the tie beams and the internal dimension of the section of the tie beams.The pseudo-static analysis was carried out by means of displacement loading,and it was found that the stiffness changes had little influence on the seismic performance of the structure.When the size change reaches 203%,the seismic performance of the structure is still not significant,indicating that the structure is not sensitive to the stiffness change of prefabricated tie beams.The results show that there is a wide feasible range in the design of the material and size of the prefabricated tie beam,and the cost,construction requirements and construction methods should be considered in the comprehensive selection.

关 键 词：预制系梁 双柱式桥墩 抗震性能 有限元分析 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]