新規(guī)走道排煙設(shè)計分析
新規(guī)走道排煙設(shè)計分析
新規(guī)走道排煙設(shè)計分析
portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">走道：portant; overflow-wrap: break-word !important;">只要是疏散經(jīng)過的通道，不管是內(nèi)走道（內(nèi)廊）、外走道（外廊），都是疏散走道。portant; overflow-wrap: break-word !important;">內(nèi)走道：無窗走道。portant; overflow-wrap: break-word !important;">疏散距離：portant; overflow-wrap: break-word !important;">從房間最遠點至安全出口的步行距離。
portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">走道長度：portant; overflow-wrap: break-word !important;">走道（內(nèi)走道、外走道、疏散走道等）的最大長度。用來判斷走道是否需要設(shè)置排煙（是否＞20m）。portant; overflow-wrap: break-word !important;">疏散走道長度≠疏散距離（概念要弄清）portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif; color: rgb(255, 76, 65);">portant; overflow-wrap: break-word !important;">參考條例：portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">一、portant; overflow-wrap: break-word !important;">《建筑設(shè)計防火規(guī)范》GB50016-2014(2018版)portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">條portant; overflow-wrap: break-word !important;">民用建筑的下列場所或部位應設(shè)置排煙設(shè)施：portant; overflow-wrap: break-word !important;">3 公共建筑內(nèi)建筑面積大于100㎡且經(jīng)常有人停留的地上房間portant; overflow-wrap: break-word !important;">5 建筑內(nèi)長度大于20m的疏散走道。portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">二、portant; overflow-wrap: break-word !important;">《建筑防煙排煙技術(shù)標準》GB51251-2017portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">條portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">3portant; overflow-wrap: break-word !important;">回廊排煙設(shè)施的設(shè)置應符合下列規(guī)定：portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">1）portant; overflow-wrap: break-word !important;">當周圍場所各房間均設(shè)置排煙設(shè)施時，回廊可不設(shè)，但商店建筑的回廊應設(shè)置排煙設(shè)施；portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">2）portant; overflow-wrap: break-word !important;">當周圍場所任一房間未設(shè)置排煙設(shè)施時，回廊應設(shè)置排煙設(shè)施。portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">條portant; overflow-wrap: break-word !important;">注: 1 公共建筑、工業(yè)建筑中的走道寬度不大于時，其防煙分區(qū)的長邊長度不應大于60m。portant; overflow-wrap: break-word !important;">條portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">3portant; overflow-wrap: break-word !important;">對于需要設(shè)置機械排煙系統(tǒng)的房間，當其建筑面積小于50㎡時，可通過走道排煙，排煙口可設(shè)置在疏散走道；排煙量應按本標準第條第3款計算。portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">條portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">3portant; overflow-wrap: break-word !important;">當公共建筑僅需在走道或回廊設(shè)置排煙時，其機械排煙量不應小于13000m³/h，或在走道兩端（兩側(cè)）均設(shè)置面積不小于2㎡的自然排煙窗（口），且兩側(cè)自然排煙窗（口）的距離不應小于走道長度的2/3；portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">4portant; overflow-wrap: break-word !important;">當公共建筑房間內(nèi)與走道或回廊均需設(shè)置排煙時，其走道或回廊的機械排煙量可按60m³/(h?㎡)計算且不小于13000 m³/h，或設(shè)置有效面積不小于走道、回廊建筑面積2%的自然排煙窗(口)。portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">走道排煙分析（凈高≤6m）portant; overflow-wrap: break-word !important; height: auto !important; visibility: visible !important;" width="800" height="600">portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">A例：portant; overflow-wrap: break-word !important;">地上建筑，走道兩側(cè)房間均≤100㎡，走道長度超過20m，且均有外窗，但開窗面積可能不滿足自然排煙要求（即：儲煙倉內(nèi)有效開口面積不滿足該房間建筑面積的2%的要求）；portant; overflow-wrap: break-word !important;">按條第3款執(zhí)行，即僅需在走道設(shè)置排煙，機械排煙量不小于13000m³/h（實際工程直接取13000m³/h即可，排煙風機15600m³/h），或在走道兩端（兩側(cè)）均設(shè)置面積不小于2㎡的自然排煙窗（口），且兩側(cè)自然排煙窗（口）的距離不應小于走道長度的2/3。portant; overflow-wrap: break-word !important;">分析：間面積不超過100㎡，其開窗面積即使不滿足自然排煙要求，該房間仍然不需排煙，但走道長度超過20m需設(shè)置排煙，因此，應執(zhí)行條第3款，即僅需走廊排煙。portant; overflow-wrap: break-word !important;">當走廊長度小于20m，仍需按條第3款執(zhí)行，即僅需在走道設(shè)置排煙。根據(jù)第3 （2）當周圍場所任一房間未設(shè)置排煙設(shè)施時，回廊應設(shè)置排煙設(shè)施。房間＜100㎡，屬于《建規(guī)》中不需設(shè)置排煙的場所，但個人認為亦屬于未設(shè)排煙設(shè)施。portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">B例：portant; overflow-wrap: break-word !important;">地上建筑，走道兩側(cè)房間全部或部分＞100㎡，且均有外窗，所有房間外窗開窗面積均滿足自然排煙要求，（走道長度大于20m）。portant; overflow-wrap: break-word !important;">按條第4款執(zhí)行，即房間、走道均需設(shè)置排煙，走道機械排煙量按60m³/（h.㎡）計算且不小于13000m³/h，或設(shè)置有效面積不小于走道面積2%的自然排煙窗。portant; overflow-wrap: break-word !important;">走道小于20m，執(zhí)行條第3款（1），當周圍場所各房間均設(shè)置排煙設(shè)施時，回廊可不設(shè)，但商店建筑的回廊應設(shè)置排煙設(shè)施。portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">C例：portant; overflow-wrap: break-word !important;">地上建筑，走道兩側(cè)房間全部＜100㎡，且均有外窗，所有房間外窗開窗面積均滿足自然排煙要求（走道長度大于20m）；portant; overflow-wrap: break-word !important;">按條第4款執(zhí)行，即房間、走道均需設(shè)置排煙，走道機械排煙量按60m³/（h·㎡）計算且不小于13000m³/h，或設(shè)置有效面積不小于走道面積2%的自然排煙窗。portant; overflow-wrap: break-word !important;">走道小于20m，執(zhí)行條第3款（1），當周圍場所各房間均設(shè)置排煙設(shè)施時，回廊可不設(shè)，但商店建筑的回廊應設(shè)置排煙設(shè)施。portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">D例：portant; overflow-wrap: break-word !important;">地上建筑，走道兩側(cè)房間全部或部分＞100㎡，且＞100㎡房間不滿足自然排煙要求（走道長度大于20m）；portant; overflow-wrap: break-word !important;">按條第4款執(zhí)行，即房間、走道均需設(shè)置排煙，走道機械排煙量按60m³/（h·㎡）計算且不小于13000m³/h，或設(shè)置有效面積不小于走道面積2%的自然排煙窗。portant; overflow-wrap: break-word !important;">＞100㎡房間設(shè)置機械排煙，排煙量按60m³/（h·㎡）計算且不小于15000m³/h。portant; overflow-wrap: break-word !important;">當走道與房間共用排煙系統(tǒng)時，計算排煙量應不小于28000m³/h，系統(tǒng)設(shè)計排煙量應為33600m³/h。portant; overflow-wrap: break-word !important;">房間、走道分屬不同防煙分區(qū)，故需分別計算排煙量，系統(tǒng)負擔多個防煙分區(qū)時，系統(tǒng)排煙量按同一防火分區(qū)中任意兩個相鄰防煙分區(qū)的排煙量之和的最大值計算。portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; height: auto !important; visibility: visible !important;" width="800" height="1066">portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">
portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">E例：portant; overflow-wrap: break-word !important;">地下，或地上走道兩側(cè)為無外窗房間，當總建筑面積＞200㎡，但所有房間面積均≯50㎡portant; overflow-wrap: break-word !important;">按條第3款執(zhí)行：portant; overflow-wrap: break-word !important;">此種情況存在不同做法：portant; overflow-wrap: break-word !important;">做法一：直接取排煙量13000m³/h；portant; overflow-wrap: break-word !important;">做法二：按走道面積及與走道相連的最大房間面積之和，乘以60 m³/（h.㎡）計算，且不小于13000m³/h；portant; overflow-wrap: break-word !important;">做法三：按需要排煙的所有房間及走道面積之和，乘以60 m³/（h.㎡）計算，且不小于13000m³/h。portant; overflow-wrap: break-word !important;">一般來說，做法一與做法二的結(jié)果是一樣的：13000 m³/h，相當于㎡排煙面積，房間最大面積50㎡，則走道最大面積㎡，當走道寬度時，相當于走道長度。而寬度的走道最大長度是60m。走道寬度＞時，最大長度24m，計算排煙量則更小。portant; overflow-wrap: break-word !important;">做法三是把走道及需排煙的所有≯50㎡的房間，作為一個防煙分區(qū)對待，數(shù)值上可能會大于13000m³/h，是一種偏安全的做法。portant; overflow-wrap: break-word !important;">個人傾向于做法二，畢竟＜50㎡的房間煙氣控制更為容易，防排煙系統(tǒng)僅考慮火災初期情況，火災大范圍蔓延，超過280℃，機械排煙系統(tǒng)已經(jīng)關(guān)閉了。具體采用何種做法，可提前跟當?shù)貓D審、消防審查機構(gòu)溝通。portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;">portant; overflow-wrap: break-word !important;">F例：portant; overflow-wrap: break-word !important;">地下，或地上走道兩側(cè)為無外窗房間，總建筑面積＞200㎡，但有＞50㎡房間。portant; overflow-wrap: break-word !important;">做法：＞50㎡房間單獨排煙，排煙量≮15000m³/h；走道及其他房間參見上述E；共用排煙系統(tǒng)時，參見上述D。
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新規(guī)走道排煙設(shè)計分析
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