摘要
结合拱桥系杆结构与受力特点,基于能量变分原理,构造出能够综合考虑抗弯刚度和边界条件和弹性支承影响的高精度索结构单元,同时结合频率法进行拱桥索力测试的基本原理,在获取系杆结构的各阶自振频率基础上,提出了一种求解系杆索力的有效算法,并且编写了相应的matlab计算程序进行验证。
Combined with tied arch bridge force characteristics,and based on energy variational principle,we construct a high-precision cable structure unit considering the flexural stiffness and boundary conditions and elastic support,combined with the basic principle of the arch bridge cable force test, by frequency method bosed on getting the natural frequency of tie structure,the efficient algorithm solving of tie cable force is presented,and the matlab calculation program is writed to verify.
出处
《低温建筑技术》
2013年第12期62-64,共3页
Low Temperature Architecture Technology
关键词
有限元法
能量变分
水平系杆
索力
finite element method
energy variational
horizontal tie
cable force
