本文建立了交错桁架结构体系的楼板与钢桁架ANSYS模型，把楼板、钢桁架杆件和剪力连接件分别用板单元、刚架单元和连接单元这三种单元来模拟。
This paper sets up the FEM model of the composite structure through ANSYS, simulates the floor, truss, shear connector by the shell, rigid frame and connector elements.
最后以两杆桁架多目标优化问题为例，说明了该方法的应用。
Finally, the efficiency of proposed approach is demonstrated in solving two-bar truss optimization problem.
不同的桁架节点形式，分析了桁架腹杆两端与弦杆的连接和弦杆与柱连接形式对结构受力性能的影响。
Different node form, the connection of web to truss chords and connection of truss chords to frame column are discussed.
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