按結構形(xing)式(shi)(shi)和受(shou)力特點(dian)樓梯形(xing)式(shi)(shi)可分為(wei)板(ban)式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和螺旋式(shi)(shi)，前兩種(zhong)屬(shu)于平(ping)面受(shou)力體系，后(hou)兩種(zhong)則(ze)為(wei)空(kong)間受(shou)力體系。

板(ban)式(shi)樓梯(ti)是(shi)(shi)由梯(ti)段板(ban)、平(ping)臺板(ban)和(he)平(ping)臺梁組(zu)成。梯(ti)段板(ban)是(shi)(shi)一塊(kuai)帶踏步的斜(xie)板(ban)，斜(xie)板(ban)支承于(yu)上、下平(ping)臺梁上，底(di)層下端支承在地壟墻上。板(ban)式(shi)樓梯(ti)的優(you)點是(shi)(shi)梯(ti)段板(ban)下表面平(ping)整，支模簡單;其缺點是(shi)(shi)梯(ti)段板(ban)跨度(du)較(jiao)大時，斜(xie)板(ban)厚度(du)較(jiao)大，結構材料用量較(jiao)多。因此板(ban)式(shi)樓梯(ti)適用于(yu)可變(bian)荷(he)載較(jiao)小、梯(ti)段板(ban)跨度(du)一般不大于(yu)3m的情況。