低周往复荷载下现浇异形曲面桥墩受力特性研究
Research on the Stress Characteristics of Cast-in-place Irregular Curved Bridge Piers Under Low Cycle Reciprocating Loads
于世发 1贾海江2
作者信息
- 1. 青岛润天丰建设发展有限公司,山东青岛 266109
- 2. 青岛海世纪建设工程有限公司,山东青岛 266109
- 折叠
摘要
某城市桥梁的下部支撑结构设计为异形曲面墩,由于独特的几何构型和较高的抗震设防要求,采用混凝土塑性损伤模型(CDP)对低周往复荷载下该结构的受力特性进行分析,得到了墩柱的损伤情况,对CDP模型中的重要参数对结构滞回特性的影响进行敏感性研究,根据结果讨论了参数的合理取值范围,此研究方法及相关结论对类似结构的抗震设计有一定的借鉴价值.
Abstract
An urban bridge is located in a province in eastern China,and its lower support structure is designed as irregular curved piers.Due to its unique geometric configuration and high seismic fortification requirements,the concrete damage plasticity(CDP)model is utilized to analyze the stress characteristics of the structure under low cycle reciprocating loads,and the damage situation of the pier column is obtained.On this basis,a sensitivity analysis is conducted on the influence of important parameters of CDP model on the structural hysteresis characteristics,and the reasonable range of parameter values is discussed according to the results.The research methods and relative conclusions have certain reference value for seismic design of similar structures.
关键词
低周往复荷载/异形曲面桥墩/塑性损伤模型/塑性损伤因子/滞回曲线Key words
Low cycle reciprocating load/Irregular curved bridge piers/Concrete damage plasticity model/Plastic damage factor/Hysteresis curve引用本文复制引用
出版年
2024
NETL
NSTL
万方数据