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压型钢板的相关要求及规定

返回列表 来源: 发布日期: 2019.07.24

压型彩钢板定义

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压型彩钢板是指以彩涂板或镀锌钢板为原材料,通过滚弯冷弯成型的建筑围护板。
基底和涂层:
彩涂板的各项指标应符合GB/T12754的规定。施工用彩钢板的厚度包括两部分:底板和涂层。底板厚度为0.38 mm至1.2 mm。底板材料为热镀锌钢板。必要时,可用铝和锌进行镀锌。镀锌层双面质量不应低于180 g/m2。涂层通常是两层,一层是环氧树脂底漆,另一层是树脂。面漆,涂层厚度不小于25亩。还可根据设计要求选用硅改性聚酯、丙烯酸树脂或PVF2涂料。
彩色压型钢板常用钢板厚度为0.5-1.0 mm。
彩色钢板压制长度
根据吊装条件,施工现场轧制的彩色压型钢板,应尽量采用长规格钢板,以减少纵向接缝,防止渗漏。一般情况下,由于运输限制,工厂轧制的彩色压型钢板的长度应在12米以内。
彩涂板的质量要求和允许尺寸公差应符合《压型金属板设计与施工规范》(YBJ216-88)的要求。
彩涂板压型钢板技术参数
板的挠度与跨度之比应满足以下限制:
墙板:1/200
屋板:屋顶坡度小于5%1/300
屋顶坡度(>5%1/250)
燃烧性能
单层彩色压型钢板耐火极限:15分钟
压型 彩涂板的类型分类:
高波板:波高大于70mm的彩色压型钢板
低波板:波高小于或等于70mm的彩色压型钢板
彩涂板压制连接方式
用连接件或紧固件固定在桁条或墙梁上。
压型彩钢板纵向连接
压型彩钢板的纵向重叠应位于檩条或墙梁处,且两块钢板应延伸至支撑构件。高波屋面板的搭接长度为350mm,坡度小于10%的低波屋面板为250mm,坡度大于10%的低波屋面板为200mm,墙板为120mm。当屋顶重叠时,应在板接缝之间安装密封剂带。
彩涂板压接

压型彩钢板横向搭接方向应与主导风向一致,搭接方向不应小于一个波浪。重叠部分有较长的密封带。

Definition of profiled coloured steel plate:
Pressed coloured steel sheet refers to the building envelope sheet formed by roll cold bending using coloured coated steel sheet or galvanized steel sheet as raw material.
Substrate and coating:
h index of coloured steel sheet should conform to GB/T12754. The thickness of coloured steel sheet for construction includes two parts: base plate and coating. The thickness of base plate ranges from 0.38 mm to 1.2 mm. The material of base plate is hot-dip galvanized steel sheet. When necessary, it can be galvanized by aluminium and zinc. The double-sided quality of galvanized coating should not be less than 180 g/m2. The coating is usually Two-coated with two-baked epoxy resin primer and resin. Topcoat, the thickness of the coating is not less than 25 mu. Silicon modified polyester, acrylic resin or PVF2 coatings can also be selected according to the design requirements.
The thickness of commonly used plate for profiled coloured steel sheet is 0.5-1.0 mm.
Pressed coloured steel plate length
According to hoisting conditions, long size sheets should be used as far as possible to reduce longitudinal joints and prevent leakage for the profiled color steel sheets rolled in the construction site. Generally, the length of the profiled color steel sheets rolled in factories should be within 12 meters due to transportation restrictions.
The quality requirement and allowable dimension tolerance of the moulded coloured steel sheet should conform to the requirements of the Code for Design and Construction of Pressed Metal Plate (YBJ216-88).
Technical parameters of profiled coloured steel plate
The ratio of plate deflection to span should meet the following limits:
Wallboard: 1/200
Roof panel: roof slope less than 5% 1/300
Roof gradient (> 5% 1/250)
combustion performance
Fire Resistance Limit of Single Layer Profiled Colored Steel Plate: 15 min
Type classification of profiled coloured steel plate:
Hih Wave Plate: Pressed Colored Steel Plate with Wave Height greater than 70mm
ow Wave Plate: Pressed Colored Steel Plate with Wave Height Less than or equal to 70mm
Connection Mode of Pressed Colored Steel Plate
Fixed with connectors or fasteners on purlins or wall beams.
Longitudinal Connection of Pressed Colored Steel Plate
The longitudinal overlap of profiled coloured steel plate shall be located at purlin or wall beam, and both plates shall extend to supporting members. The lapping length is 350 mm for high wave roof panel, 250 mm for low wave roof panel whose slope is less than 10%, 200 mm for low wave roof panel whose slope is more than 10%, and 120 mm for wallboard. When the roof is lapped, the sealant tape should be installed between the slab joints.
Cross Connection of Pressed Colored Steel Plate
The transverse lapping direction of profiled color steel plate should be consistent with the dominant wind direction, and the lapping direction should be no less than one wave. The overlap part is provided with long sealing tape.

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