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钢结构的网架采用的保温隔热材料以玻纤棉为主具有良好的保温隔热效果

发布时间:2016-9-18 15:29:58 浏览次数:494

钢结构的网架采用的保温隔热材料以玻纤棉为主具有良好的保温隔热效果

 

用以外墙的保温板,有效的避免墙体的“冷桥”现象,达到了更好的保温效果。100mm左右厚的R15保温棉热阻值可相当于1m厚的砖墙。网架结构的拼装一般在现场进行。在出厂前对于螺栓球节点网架宜进行预拼装,以检查零部件尺寸和偏差情况。


With the external wall thermal insulation board, effectively avoid the wall of the "cold bridge" phenomenon, to achieve a better thermal insulation effect. About 100mm R15 thick cotton insulation thermal resistance can be equivalent to 1m thick brick wall. The assembly of space truss is generally carried out on site. Prior to the factory for the bolt ball node network should be pre assembled to check parts size and deviation.


网架的拼装应根据施工安装方法不同,采用分条拼装,分快拼装或整体拼装。网架拼装应在平整的刚性平台上进行。对于焊接空心球节点的网架在拼装时,应正确选择拼装次序,以减少焊接变形和焊接应力,根据国内多数工程经验,拼装焊接顺序应从中间向两边或四周发展,最好是由中间向两边发展,因为网架在向前拼装时,两端及前边可自由收缩。


The assembling of the grid frame should be based on the construction and installation methods, using the sub assembly, sub fast assembly or the overall assembly. Grid assembly should be carried out on a flat rigid platform. For welded hollow spherical joints rack in the assembly, should be the right choice of assembly order to reduce welding deformation and welding stress, according to the majority of domestic engineering experience, the order from the middle to both sides or around the development of welding and assembling, the best is the development from the middle to both sides, because the net frame in the forward assembly, front ends and free contraction.


钢结构产品在焊完一条节间后,可检查一次尺寸和几何形状,以便由焊工在下一条定位焊时给予调整。网架拼装中应避免形成封闭圈,在封闭圈中施焊,焊接应力将很大。


Steel structure welding end products in a node, one can check the size and geometry, so that by the welder in a welding positioning adjustment. The closed ring should be avoided in the assembling of the grid, and the welding stress will be great in the closed circle.

 

 

 

 

 

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