鋼筋桁架樓承板規格

鋼筋桁架(jia)樓(lou)承板(ban)(ban)(ban)(ban)適(shi)用(yong)于(yu)工業與民用(yong)建筑(zhu)及構筑(zhu)物的(de)組合樓(lou)蓋(gai)。在施工階段可(ke)承受樓(lou)板(ban)(ban)(ban)(ban)濕混凝(ning)土自重(zhong)與一定的(de)施工荷載，在使用(yong)階段鋼筋桁架(jia)上下(xia)弦(xian)鋼筋與混凝(ning)土整體共同工作承受使用(yong)荷載。鋼筋桁架(jia)樓(lou)承板(ban)(ban)(ban)(ban)可(ke)用(yong)于(yu)單(dan)向(xiang)簡(jian)支(zhi)板(ban)(ban)(ban)(ban)，通過加設板(ban)(ban)(ban)(ban)支(zhi)座負筋，可(ke)用(yong)于(yu)單(dan)向(xiang)連(lian)續板(ban)(ban)(ban)(ban)，還可(ke)加設鋼筋桁架(jia)垂(chui)直方向(xiang)的(de)板(ban)(ban)(ban)(ban)底鋼筋及板(ban)(ban)(ban)(ban)支(zhi)座負筋，用(yong)于(yu)簡(jian)支(zhi)或連(lian)續雙(shuang)向(xiang)板(ban)(ban)(ban)(ban)。

鋼(gang)筋桁架樓(lou)承板規(gui)格(ge)型(xing)(xing)號一般用HB或(huo)者TD兩種形式(shi)來(lai)表示，市面上用的比較(jiao)多的是TD1-7。那么鋼(gang)筋桁架樓(lou)承板規(gui)格(ge)型(xing)(xing)號如何選擇？


鋼(gang)筋(jin)桁(heng)架(jia)樓承板(ban)(ban)規(gui)格(ge)選擇的選用應進行施(shi)工(gong)和使用兩階段(duan)設(she)計(ji)。對(dui)一般(ban)民用建筑單向(xiang)(xiang)簡支(zhi)或連(lian)(lian)續(xu)(xu)板(ban)(ban)，在(zai)施(shi)工(gong)階段(duan)，除(chu)樓板(ban)(ban)自重外的施(shi)工(gong)活(huo)荷載標準值(zhi)不應大于(yu)1.5kN/m2時，鋼(gang)筋(jin)桁(heng)架(jia)樓承板(ban)(ban)常(chang)用型號的允許跨度應按(an)下表選用。單向(xiang)(xiang)連(lian)(lian)續(xu)(xu)板(ban)(ban)的支(zhi)座(zuo)(zuo)負筋(jin)、簡支(zhi)或連(lian)(lian)續(xu)(xu)雙(shuang)向(xiang)(xiang)垂直于(yu)鋼(gang)筋(jin)桁(heng)架(jia)方向(xiang)(xiang)的板(ban)(ban)底鋼(gang)筋(jin)及支(zhi)座(zuo)(zuo)負筋(jin)均(jun)應按(an)計(ji)算確定。其混(hun)凝土強度等級不應低于(yu)C20。