檩

It is described the feasibility of the application of the continuous purlins in metal building system from the aspects of analytic model and stability.

从分析模型和稳定两方面阐述了连续檩条在金属建筑系统中应用的可行性。

It is described the feasibility of the application of the continuous purlins in metal building system from the aspects of analytic model and stability.

提要］ 从分析模型和稳定两方面阐述了连续檩条在金属建筑系统中应用的可行性。

It shows that the stability of continuous purlins is controlled by bottom flange in middle span within wind suction.

分析结果表明连续檩条的稳定验算由风吸力作用下跨中下翼缘反弯点之间的受压区控制。

Tube through the purlins between the trusses, beams and support system links the entire structure together into a whole.

管桁架之间通过檩条、连系梁和支撑系统把整个结构连成整体。

But the current specification GB50018-2002 does not consider the effect of lip inclination, hence, it cannot be effectively used in designing inclined lipped Z-section purlins.

而现行冷弯型钢设计规范GB50018-2002采用有效截面法计算受弯构件的屈曲荷载并没有考虑卷边角度的影响，不能合理的进行斜卷边Z型檩条的屈曲荷载设计。

Based on the results of the study, the angle of the lip stiffener has great effects on the buckling coefficients of inclined lipped flange, and cannot be neglected in calculating buckling strengths of inclined lipped Z-section purlins.

用规范中提供的截面来验证该公式的合理性，结果表明：当卷边角度在40°—90°的范围内时，误差在3％以内，可以满足实际设计要求，并能够推广应用于计算常用斜卷边Z形檩条的翼缘屈曲系数。

Including:classical steel construction plans and good roducts recommendation ; initialized roof and wall system plans;weight loading capacity calculation;typeset drawings of steel purlins and steel panels,as well as other detailed design of enclosure and steel structure.

具体包括：经典和钢建筑设计方案及高性价比产品推荐；提供初始化屋面、墙面系统的整体方案；提供承载计算；提供钢檩条、压型钢板的排版图及其它围护系统（收边、排水、采光、通风）的深化设计、钢结构详图设计等。

Constant load stress: Constant load refers to the structure of the shelf itself, self-respect, and the Housing Connection C-shaped steel frames, purlins, the Housing frame, roof, panel weight.

受力恒荷载：恒荷载指货架本身结构的自重，连接C型钢和房架、檩条、房架、屋面板、墙板的重量。

Circular steel arch es are distributed along the short span of the shell as the main load-bearing component,while steel tubes of rectangular section are distributed as purlins between the arches along the long span.

为满足建筑设计简洁通透的要求，该工程采用了沿椭球面短轴方向布置圆形钢拱结构为主要承载构件、拱间沿长轴方向布置矩形钢管作为檩条的结构方案。

The purline design of the roof and the type of joint connections in the Guangdong Sciences Center were introduced and analyzed.

对广东科学中心屋面维护结构檩条设计及节点连接形式进行了介绍和分析，并探讨了在维护结构和主体结构节点连接中使用承压型高强螺栓连接的工作机理、力学性能，为工程设计中应用提供有益的参考。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐