本文第四章首先对张弦桁架结构的自振特性进行了分析，对其自振频率和振型的特点进行了总结。
In this paper, the natural characteristics of TSS will be analyzed firstly, and then the peculiarity of its frequency and vibration will be summarized.
试验和分析结果表明：带桁架转换层框架呈局部弯剪型的变形特性。
The experiment and analysis results show that frame model with truss transfer storey has partial bending shear deformation.
最后还提出了梁筋直锚型节点受力的空间桁架模型。
Finally, a novel spatial truss mechanism model for the beam-wider-than-wall joint is put forward.
目的研究具有外环桁架的肋环型索穹顶的构件布置和特点，提出确定初始预应力分布的快速计算法。
The purpose of this paper is to investigate characters, initial prestress distribution and its quick calculation method of Geiger dome with outer truss torus.
采用改进的遗传算法，求解了具有屈曲约束，尤其截面积是离散型的桁架拓扑优化。
We present an improved genetic algorithm(GA) for topology optimization of a truss with discrete sizing and under local buckling constraints.
为研究直接焊接方钢管桁架的静力工作性能，进行了两榀直接焊接K型间隙方钢管桁架静力试验。
A static test program on two trusses which include directly welded gap K-joints is carried out, the aim of the work is to study the static behavior of the directly welded SHS truss.
无论是钢结构还是混凝土结构，空心的箱型结构对承梁和桥墩都比钢梁桁架式结构好。
Hollow box structures for both the deck and piers, whether of steel or concrete, are better than steel trussed structures.
结果表明，转换钢桁架产生局部振型，形成结构薄弱环节，结构主振周期对应着地震力贡献最大的振型；
It is indicated that some modes corresponding to the maximum of earthquake force are principal, but others produced by steel trusses are local because of the weakness of theirs joints.
结果表明，转换钢桁架产生局部振型，形成结构薄弱环节，结构主振周期对应着地震力贡献最大的振型；
It is indicated that some modes corresponding to the maximum of earthquake force are principal, but others produced by steel trusses are local because of the weakness of theirs joints.
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