ï»?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 如何保养钢结构厂房,遵义钢结构厂家告诉你 - 遵义市润丰源钢铁铔R€ æœ‰é™å…¬å?/title> <meta name="Keywords" content="遵义钢结æž?> <link type="text/css" href="/template/NEST700011/lib/base.css" rel="stylesheet"/> <link type="text/css" href="/template/NEST700011/lib/style.css" rel="stylesheet"/> <script src="/template/NEST700011/js/jquery-1.8.0.min.js"></script> <script src="/template/NEST700011/js/foucsbox.js"></script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><listing id="1jrr3"></listing><progress id="1jrr3"><del id="1jrr3"><span id="1jrr3"><thead id="1jrr3"></thead></span></del></progress><ins id="1jrr3"><video id="1jrr3"></video></ins><th id="1jrr3"></th><var id="1jrr3"><strike id="1jrr3"><menuitem id="1jrr3"><strike 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一、钢¾l“构工业厂房钢构件的耐火保护<br />     ç”׃ºŽé’¢æž„件自íw«è¾¾ä¸è§„范要求的耐火极限,因些需要对钢构仉™‡‡å–相应的耐火保护措施. 常用的耐火保护措施有防火涂料法、发泡防火漆法和外包防火层法<br />     1、防火涂料法<br />     防火涂料法就是在钢结构上å–äh¶‚防火涂料以提高其耐火极限.目前,我国钢结构防火涂料主要分ä¸ø™–„涂型和厚涂型两类,卌™–„åž?B¾c?包括­‘…è–„åž?和厚åž?H¾c?.薄型涂层厚度åœ?mm以下,在火灾时能吸热膨胀发æˆö,形成泡沫状炭化隔热层,从而阻止热量向钢结构传é€?延缓钢结构温度的提升,起到防火保护作用.其主要优ç‚ÒŽ˜¯:涂层è–?寚w’¢¾l“构负荷è½?装饰性较å¥?对小面积复杂形状的钢¾l“构表面的涂抹工作比厚型要容æ˜?厚型涂层厚度ä¸?-50mm,涂层受热不发æ³?依靠其较低的导热率来延缓钢结构温度的提升,从而è“v到防火保护作ç”?两者具有不同的性能特点,分别适用于不同场å?但是,无论那种产品均应通过国家‹‚€‹¹‹æœºæž„检‹¹‹åˆæ ?方可选用.<br />     2、发泡防火漆æ³?br />     发æˆö防火漆是由成膜剂、阻燃剂、发泡剂½{‰å¤š¿Uææ–™åˆ¶é€ è€Œæˆçš„一¿Ué˜»ç‡ƒæ¶‚æ–?防火漆与一般æÑa漆相æ¯?在物理性能斚w¢åŸºæœ¬ä¸€æ ?不同的是它干燥以å?漆膜本èín不易燃烧,遇火æ—?能推˜qŸç«ç„°åšg烧到涂漆的可燃物ä¸?å…ähœ‰ä¸€å®šçš„防火性能.据试éª?ž®†ä¸€èˆ¬æÑa漆与防火漆分别涂在木板上,òq²ç‡¥å?用同æ ïLš„火焰烘烤,涂一般æÑa漆的木板,不到2分钟ž®±å’Œæ²ÒŽ¼†ä¸€èµïL„¦ç?而涂非膨胀型防火漆的木æ?2分钟后仅出现阴燃现象,静置30¿U’后立即熄灭;涂膨胀型防火漆的木æ?即ä‹É烘烤15分钟,˜qžé˜´ç‡ƒçŽ°è±¡ä¹Ÿæœªå‡ºçŽ?由此可见,用防火漆涂于物体表面,一旦发生火ç?的确能在定时间里é˜ÀL­¢ç«åŠ¿è”“åšg,保护物体表面,从而äؓ灭火取宝è´ëŠš„æ—‰™—´.<br />     3、外包防火层æ³?br />     外包防火层法ž®±æ˜¯åœ¨é’¢¾l“构外表æ·ÕdŠ å¤–包å±?可以现浇成型,也可以采用喷涂法.现浇成型的实体æ؜凝土外包层通常用钢丝网或钢½{‹æ¥åŠ å¼º,以限制收¾~©è£‚¾~?òq¶ä¿è¯å¤–壳的强度.å–äh¶‚法可以在施工现场寚w’¢¾l“构表面å–äh¶‚石灰水惔或是矌™†ç ‚浆以åŞ成保护层,也可以掺入珍珠岩或石‹‚?同时外包层也可以用珍珠岩、石‹‚‰ã€çŸ³è†æˆ–çŸÏx£‰æ°´æƒ”、轻混凝土做成预制板,采用胶粘剂、钉子、螺栓固定在钢结构上.<br /> <br /> 二、钢¾l“构工业厂房的防火分åŒ?br />     防火分区是指采用防火分隔措施划分出的、能在一定时间内防止火灾向同一建筑的其余部分蔓延的局部区åŸ?½Iºé—´å•å…ƒ).在徏½{‘物内采用划分防火分åŒø™¿™ä¸€æŽªæ–½,可以在徏½{‘物一旦发生火灾时,有效地把火势控制在一定的范围å†?减少火灾损失,同时可以ä¸ÞZh员安全疏散、消防扑救提供有利条ä»?常用的防火分区做法有讄¡½®é˜²ç«å¢™å’Œè®„¡½®ç‹¬ç«‹æ°´å¹•,但由于工业生产厂房的ç‰ÒŽ®Šæ€?˜q™ä¸¤¿Uæ–¹æ³•å‡æœ‰ç¼ºç‚?<br />     1、防火墙<br />     用防火墙ž®†åŽ‚房分隔开来控制火势蔓å»?在民用徏½{‘是常用办法,但在工业厂房ä¸?不仅因äؓ厂房大空间被分割后媄响其通透æ€?而且从生产工艺的˜qžç®‹æ€§è¦æ±‚心以及厂房内物‹¹ç»„¾l‡çš„;若从生äñ”½Ž¡ç†çš„角度看,也不利于生äñ”½Ž¡ç†.<br />     2、独立水òq?br />     水幕可以起防火墙的作ç”?用独立水òq•ä½œé˜²ç«åˆ†éš”,是一个非常好的方æ¡?防火水幕带宜采用喷雾型喷å¤?也可采用雨淋式水òq•å–·å¤?水幕喷头的排列不应少äº?æŽ?防火水幕带åŞ成的水幕宽度不宜ž®äºŽ5m.˜q™ç§åˆ†éš”方式灉|´»,不像防火墙要把èžR间截æ–?理论上多大跨度都可以.在正常生产时,ž®±å¥½è±¡å®ƒä¸å­˜åœ?一旦有火灾需要防火分隔时,它可以立卛_®žçŽ°æœ‰æ•ˆåˆ†éš?但独立水òq•ä½œé˜²ç«åˆ†åŒºåˆ†éš”也有不èƒö之处:首先是需水量å¤?其次是厂房内发生火灾开始往往是局部的,只需几个灭火器就能解决问é¢?可此时若启动水幕,会对生äñ”讑֤‡é€ æˆç ´å,由此造成的损失比局部火灄¡š„损失更大.因此需严格控制水幕的启动时æœ?防止误动,所以设计时采用人工手动启动更合é€?˜q˜æœ‰ž®±æ˜¯æœ‰æ•ˆ¾l´æŠ¤éºÈƒ¦.<br /> <br />     ¾lég¸Šæ‰€˜q?目前建筑钢结构工业厂房的耐火保护和防火分区分别采用防火涂料法和独立水òq•æ˜¯è¾ƒæ™®éçš„æ–ÒŽ³•,但是ç”׃ºŽå·¥ä¸šåŽ‚房因生产需è¦?实际应用时各æ–ÒŽ³•ä¹Ÿéƒ½æœ‰ä¸å¦‚意的地æ–?我们仍需在实践中不断探烦,以便扑ևºæ›´å¥½çš„防火措æ–?在硬件上保障人员和胦产安å…?<br /></p> </div> <div class="newArtiNext mt10"><div>上一æ?<a href="130.html">遵义铔R€ åŽ‚‹¹…谈重力铔R€ æ—¶çš„注意事™å?/a></div> <div>下一æ?<a href="128.html">遵义钢结构在防腐中涂层发的注意事™å¹ä»‹¾l?/a></div> </div> <div class="tag">相关标签åQ?a href='/key.aspx?k=%e9%81%b5%e4%b9%89%e9%92%a2%e7%bb%93%e6%9e%84'>遵义钢结æž?/a>,<a href='/key.aspx?k=%e9%92%a2%e7%bb%93%e6%9e%84'>钢结æž?/a>,</div> <div class="crumb 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