Equivalent Compensation Nodal Force Method and Program Realization of Bridge Support Construction Simulation
This study aims to simplify the contact calculation problem of one-way support of nodes in the simulation of bridge support construction process.Given that there is currently no accurate algorithm specifically for the simulation of one-way support of bridge supports,and the commonly used contact force algorithms,such as node constraint method and penalty function method,have problems with large computational load or insufficient accuracy and convergence,this paper proposes an innovative equivalent compensation node force method.By applying or removing constraints in advance and simultaneously applying equivalent compensation node forces,the impact caused by changing constraints in advance can be effectively offset,thus obtaining a theoretically accurate solution to the problem.The algorithm has been implemented through self-developed software and verified for its reliability and efficiency advantages in comparison with commercial finite element software.The finite element calculation software developed based on this method has been successfully applied in multiple projects such as Liuzhou Straddle-Type Monorail,Hangzhou-Quzhou Railway,and Nanjing-Xuancheng Railway.The application results show that:(1)this method can more realistically simulate the stress state of the structure,not only effectively avoiding the complexity of searching for critical contact states,but also solving the problem of inaccurate contact force solution;(2)compared with mature commercial software,this method has reliable results and high computational efficiency;(3)the improvement in computational efficiency of this method increases with the increase in model complexity.
bridgesimulation of scaffold constructionequivalent compensation node force methodone-way supportfinite elementvoidcontact
万方数据
维普
