预应力钢-混凝土组合连续梁桥预加力效应有限元分析  

Finite element analysis on prestressing effects of prestressed Steel-concrete composite continuous beam bridge

作　　者：李飞燕[1] 陈缔欣 

机构地区：[1]厦门大学嘉庚学院土木工程系,福建漳州363105 [2]厦门市政工程设计院有限公司,福建厦门361004

出　　处：《福建建筑》2013年第3期47-49,共3页Fujian Architecture & Construction

摘　　要：本文以福州市某钢-混凝土组合连续梁桥为对象,应用ANSYS有限元软件建立空间模型,将有限元值与实桥静载试验值进行比较,从而验证了有限元模型的合理性,提出了考虑预加力效应的截面尺寸优化方案,并在此基础上分析了预加力对结构受力性能的影响。分析结果表明,考虑预加力对截面尺寸优化效应的方案在技术上可行,预加力技术的应用有效地改善了结构的受力性能,且经济效益较显著,可为类似工程的设计与研究提供借鉴。In this paper, with a case study of a steel - concrete composite continuous beam bridge in Fuzhou, a spatial finite element model was set up by using ANSYS progTam, finite element values with real bridge static, load test values were compared to verify the reasonableness of the finite element model. An opti-mum plan considering prestressing effect is proposed. On this basis,the prestressing effects on mechanic behavior of the strocture are studied. Analysis showed thai ：the model considering prestressing effect is tested to be technically feasible, the application of prestressing improve the structure of the force performance, eeenomic benefits are obvious. It can provide a reference for the design and research of similar projects.

关 键 词：预应力技术 钢-混凝土组合连续梁桥 有限元分析 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]