開(kai)口樓(lou)承(cheng)板(ban)(ban)(ban)的厚度(du)與板(ban)(ban)(ban)型的選擇是基于施工(gong)避免臨時(shi)支撐為(wei)原則的樓(lou)承(cheng)板(ban)(ban)(ban)在(zai)澆筑鋼(gang)筋混(hun)凝土時(shi)作(zuo)為(wei)施工(gong)用(yong)(yong)鋼(gang)承(cheng)模板(ban)(ban)(ban)，用(yong)(yong)圓術頭焊(han)釘穿透樓(lou)承(cheng)板(ban)(ban)(ban)焊(han)接在(zai)鋼(gang)梁上翼緣后，并可對鋼(gang)梁起側向支承(cheng)作(zuo)用(yong)(yong)。 在(zai)使用(yong)(yong)階段樓(lou)承(cheng)板(ban)(ban)(ban)作(zuo)為(wei)混(hun)凝土樓(lou)板(ban)(ban)(ban)的受拉鋼(gang)筋，也提高了樓(lou)板(ban)(ban)(ban)的剛度(du)，節省了鋼(gang)盤和(he)混(hun)凝土的用(yong)(yong)量。