按結(jie)構形(xing)(xing)式(shi)和受(shou)力特點樓梯形(xing)(xing)式(shi)可分為板(ban)式(shi)、梁式(shi)、懸(xuan)挑(剪刀)式(shi)和螺旋式(shi)，前兩(liang)種(zhong)屬于平面(mian)受(shou)力體(ti)系(xi)，后兩(liang)種(zhong)則為空間受(shou)力體(ti)系(xi)。

板(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)是由(you)梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)(ban)和平(ping)臺梁組成。梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)是一塊帶踏步的斜板(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)支承于(yu)上(shang)(shang)、下平(ping)臺梁上(shang)(shang)，底層(ceng)下端支承在(zai)地壟墻上(shang)(shang)。板(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)的優(you)點(dian)是梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)下表(biao)面(mian)平(ping)整，支模簡單;其缺點(dian)是梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)跨度較大時，斜板(ban)(ban)(ban)(ban)厚度較大，結(jie)構(gou)材(cai)料用量較多。因(yin)此(ci)板(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)適(shi)用于(yu)可變(bian)荷(he)載(zai)較小、梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)跨度一般(ban)不大于(yu)3m的情(qing)況。