期刊论文

Nonlinear FEM and Iterative Algorithm on External Prestressed Tendon

中文

公路交通科技

1002-0268

2023

12

82-88

国家自然科学基金项目(52278142) 湖南省自然科学基金项目(2023JJ30019) 湖南省教育厅项目(21A0187) 桥梁结构健康与安全国家重点实验室开放基金项目(BHSKL21-06-GF)。

本校为第一机构

为了准确模拟体外预应力筋的非线性受力行为,采用理论推导和程序研制开展了体外预应力筋非线性有限元模型及其算法的研究。首先,基于体外预应力筋与转向块之间可自由滑动而导致体外预应力筋在全长范围内为常应变构件的受力特点,建立了非...展开更多 为了准确模拟体外预应力筋的非线性受力行为,采用理论推导和程序研制开展了体外预应力筋非线性有限元模型及其算法的研究。首先,基于体外预应力筋与转向块之间可自由滑动而导致体外预应力筋在全长范围内为常应变构件的受力特点,建立了非线性体外预应力单元研究方法。其次,以锚固块之间设置2个转向块的三段四节点平面体外筋为例,基于变分法得到应变微...

In order to simulate the nonlinear behavior of external prestressed tendons accurately,the nonlinear FEM and its algorithm of external prestressed tendons are studied by theoretical deduction and program development.Firstly,the nonlinear external prestressing element re...MORE In order to simulate the nonlinear behavior of external prestressed tendons accurately,the nonlinear FEM and its algorithm of external prestressed tendons are studied by theoretical deduction and program development.Firstly,the nonlinear external prestressing element research method is established based on the characteri...