When we design the purlin of the metal roof , we made used of the continuous beam mechanic characteristic to find internal force 工程设计时利用连续梁的分析方法获得构件的内力，为此构建了一个用梁单元和二力杆单元构成的力学模型。
3.
The stability bearing capacity of purlin was calculated by formulas of two criterion and some design manual . some comments on the design of purlin are proposed after comparing the results , including the investigation result of this paper 把试验和理论计算结果与门式刚架规程、澳洲冷弯型钢结构规范及设计手册的计算结果进行了比较。
4.
The purlin - sheeting have been the subject of numerous theoretical and experimental investigations over the past four decades , but the complexity of the systems has led to great difficulty in developing a perfect and general model 四十年来，屋面板檩条系统得到了大量的理论和试验研究，但由于该系统的复杂性导致现在还难以得出完善通用的设计方法。
5.
Company designs soft - ware with international advanced production , detection equipment and steel structure , pro - cess each kind cai the supplementary materials such as board and purlin , product is applied e - xtensively in industrial workshop , storehouse and residence 公司采用国际先进的生产检测设备和钢结构设计软件，加工各类彩板夹芯板檩条等辅助材料，产品广泛应用于工业厂房仓库住宅。
6.
The steel construction is made up of roof beam , post , purlin , roofing and wall , adopt the automatic production line to weld and take shape in the factory , construction site spend high - strength bolted joint reduce weld work load , make progress and quality receive the complete assurance 钢结构由梁、柱、檩条、屋面和墙体组成，工厂内采用自动化生产线焊接成形，施工现场用高强螺栓连接，减少了焊接工作量，使进度和质量得到完全保证。
7.
When we study the continuous purlin and simply supported purlin , we find that the continuous purlin enhance more significative load - carrying capacity and stiffness than the simple - supported purlin . but it decreases effectively the weight of cold - formed steel sections , so the continuous purlins are becoming more and more popular used 通过研究发现连续檩条比简支檩条具有较高的承载力和较强的刚度，还能有效降低用钢量，因此连续檩条应用也越来越多。
8.
This paper have studied some questions which included distributed load , lapped length , becoming less crowded purlins each other in the lap joints , mechanic analysis , lateral buckling and ultimate load - carrying capacity and construction of double purlin in the lap joins . according to result of test and analysis of theories , the author advances the suggestions , which may be a reference to steel structure design 文章对z型连续搭接檩条荷载分布、搭接长度、搭接嵌套松动、侧向稳定以及构件极限承载力和双檩条的构造等问题进行了研究，并根据试验结果和理论分析提出了建议。
9.
This paper summarizes the general characteristic and design principle of the continuous cold - formed steel purlins of the z - section and introduces domestic and overseas development of the continuous cold - formed steel purlin of the z - section , analyzes a variety of the factors effecting the continuous cold - formed steel purlin of the z - section 本文简单介绍了冷弯z型钢檩条的一些特点和冷弯z型连续钢檩条的设计原则以及国内、外关于冷弯z型连续钢檩条研究动态，分析了影响冷弯z型连续钢檩条承载力的各种因素。
10.
" blue house " , situated at 72 stone nullah lane in wanchai , is a pre - war building with more than seventy years of history that shows architectural characteristics of both chinese and western styles . many of the internal structures like purlin , staircase , railing are still preserved in their authentic wooden fabric 蓝屋位处湾仔石水渠街72号，是一幢具七十多年历史的战前楼宇，混合了中西建筑风格特色，而其横梁、楼梯、扶手等不少内部构件，仍依然保留著原先的木制结构。
