基于有限元法的钢-砼连续组合梁截面优化设计

Section Optimization Design of Steel-Concrete Continuous Composite Beams Based on the Finite Element Method

给出了钢-混凝土连续组合梁截面计算机辅助优化设计的有效方法,以有限元结构分析和优化算法相结合为手段,提出了一种符合实际情况的钢-混凝土组合梁的剪力连接模式,建立钢-混凝土连续组合梁有限元分析模型、优化参数模型,优化数学模型,用ANSYS的参数化设计语言编制了分析文件和优化控制文件,经计算获得钢-混凝土连续组合梁的最优截面形式。该方法的优化效果显著,并且效率高,可广泛应用于钢-混凝土连续组合梁截面优化设计工程。

This paper introduces the efficient computer aided design method to optimize the section of steel-concrete continuous composite beams by combining FEM for structure analysis with optimization arithmetic and an efficient shearing force link model of steel - concrete composite beams. The authors established a finite element analysis model, optimization parameter model, optimization mathematics model of steel - concrete contin- uous composite beams and programs analysis file and optimization control file by using the ANSYS parameter design language. The optimum of the steel -concrete continuous composite beams section is obtained after computing and the, optimization result indicates that this method is efficient in optimizing the section of steel - concrete continuous composite beams. So it could be applied extensively in the steel - concrete continuous composite beams section optimization design.