基于ANSYS的部分预应力混凝土梁疲劳性能模拟  

FATIGUE PERFORMANCE SIMULATION OF PARTIALLY PRESTRESSED CONCRETE BEAMS BASED ON ANSYS

作　　者：雷兵[1] 宋玉普[1] 

机构地区：[1]大连理工大学海岸与近海工程国家重点实验室,辽宁大连116024

出　　处：《工业建筑》2013年第9期71-76,143,共7页Industrial Construction

基　　金：国家863基金资助项目(2007AA11Z133)

摘　　要：基于ANSYS的二次开发技术实现了部分预应力混凝土梁的疲劳性能分析。根据钢筋和混凝土的疲劳本构关系和损伤模型并考虑预应力筋的有效预应力损失,运用ANSYS进行部分预应力混凝土梁的疲劳全过程分析,并与试验结果相对比。结果表明,数据模拟的结果与试验结果吻合较好,具有一定的精度,说明该模型能够较真实地反映疲劳荷载作用下部分预应力混凝土梁的力学性能,为模拟实际工程中承受疲劳荷载作用的部分预应力混凝土梁的疲劳性能提供了可靠有效的方法。According to the damage parameters of reinforcement and concrete and considering effective prestressing loss of prestressing tendon, the damage model was established, then based on ANSYS＇ second development technology the full-range fatigue analysis of partially prestressed concrete beams was carried out. The calculating results compared with the experimental results shown that it fit favorably with the experimental results within the accepted limits, and that this model can reflect the mechanical properties of partially prestressed concrete beams with fatigue loading. It provided reliable and efficient method for simulating fatigue behavior of such sorts of beams for practical projects.

关 键 词：ANSYS 部分预应力 疲劳性能 有限元 非线性分析 疲劳全过程分析 

分 类 号：TU378.2[建筑科学—结构工程]