单层工业厂房中网架结构的使用

本文通过具体的工程实例，介绍网架结构在单层工业厂房中的使用，对结构选型进行了探讨，并详细地阐述了此工程实例中网架结构的特点．

烟台八角湾国际会展中心综合文化活动中心结构设计

烟台八角湾国际会展中心项目中综合文化活动中心为地下1层,地上5层的钢框架结构,屋盖为双向桁架与单层网壳的多重组合形式。介绍了结构布置、计算参数、超限情况等,对结构进行了反应谱法、弹性时程、抗震性能化设计和稳定性等方面的分析,并对结构进行了罕遇地震作用下的动力弹塑性时程分析以研究结构的抗震性能。同时对旋转楼梯进行了应力、挠度、舒适度的验算,对托柱桁架进行了节点有限元分析。结果表明,综合文化活动中心具有良好的抗震性能,能满足预定的性能目标。

Experimental Study on a Single Layer Two-Way Grid Shell with Tension Members

Single layer two-way grid shell with in-plane and out-of-plane tension members is a new type of single-layer latticed shell roofs. Compared with traditional single-layer latticed shells,this new type has a unique mesh form and excellent rigidity. In order to further understand the buckling behaviors of single layer two-way grid cylindrical shell roof with tension members,the buckling experiments have been undertaken to investigate the effect of tension members,in either out-of-plane or in-plane placement. A single layer two-way grid cylindrical shell roof with out-of-plane tension members has been tested under symmetric and asymmetric loading. The tension member placement,the introducing initial axial force to tension members and the load patterns are considered to investigate the buckling behavior. Experimental results indicate that four long out-ofplane tension members work well under symmetrical loading,but only two long out-of-plane tension members work under asymmetrical loading. It can be concluded that the PC bar members used as tension members for this study are useful in the construction of a single layer two-way grid cylindrical shell roof with structural members intersecting at small angles.

平面桁架喷杆位移分析及验证

目前市面上的喷雾机喷杆多是三角桁架结构,制作繁琐,折叠后仍占较大空间。基于此,研究了一种平面桁架宽幅喷杆,利用有限元分析其在5种不同工况下的位移变化规律。制作喷杆后,搭载于整车上进行针对性工况实验。经测量,喷杆的振动最大变形位移量≤170 mm。研究了喷杆振动变形规律,为之后的喷杆振动控制研究提供技术参考。

黄石奥林匹克体育中心体育场结构设计

介绍了黄石奥林匹克体育中心体育场的结构选型与布置、分缝方案比选、复杂节点设计。下部主体结构为钢筋混凝土框架结构,通过钢筋混凝土空腹桁架传递钢罩棚支座的水平反力,分缝方案可以显著释放下部混凝土结构的温度应力,动力特性也较好,是下部结构的理想方案。钢罩棚采用折形平面交叉钢桁架+树状钢支撑结构体系,采用不分缝方案,除了钢罩棚构件温度应力小幅增加外,抗震性能、对下部混凝土结构的影响都明显优于分缝方案,是钢罩棚的理想方案。