摘要
建立了基于有限元方法结合增量迭代混合法研究适用于预应力混凝土梁非线性全过程分析的数值模型,提出的算法能较好地处理梁加载过程的响应变化,以及可穿越梁破坏前可能出现的极值点问题.并利用该数值模型分析评估了预应力筋配筋率、有效预应力对预应力混凝土梁性能的影响,该模型所得结果可为预应力混凝土梁的优化设计提供相应的参考.
In this paper a numerical model is built based on the finite element method incorporating an incremental- iterative algorithm for nonlinear full-range analysis of prestressed concrete beams. The proposed algorithm can deal well with the changes of response during loading and is capable of predicting the possible limit points prior to the failure of the beams. The influence of the ratios of prestressing steel and effective prestress on the behavior of prestressed concrete beams are analytically evaluated using the proposed numerical model. The research results may serve as a reference for the optimal design of prestressed concrete beams.
出处
《宁波大学学报（理工版）》
CAS
2007年第2期258-261,共4页
Journal of Ningbo University：Natural Science and Engineering Edition
关键词
预应力混凝土梁
增量迭代混合法
材料强度
有限元模型
prestressed concrete beam
incremental-iterative algorithm
material strength
finite element model
