按結構(gou)形式(shi)(shi)和受(shou)(shou)力特點(dian)樓梯形式(shi)(shi)可分為(wei)板(ban)式(shi)(shi)、梁式(shi)(shi)、懸挑(tiao)(剪刀)式(shi)(shi)和螺旋式(shi)(shi)，前(qian)兩(liang)種(zhong)(zhong)屬于平面受(shou)(shou)力體系(xi)，后兩(liang)種(zhong)(zhong)則(ze)為(wei)空間受(shou)(shou)力體系(xi)。

板(ban)式(shi)(shi)樓梯(ti)是由梯(ti)段(duan)板(ban)、平臺(tai)板(ban)和平臺(tai)梁(liang)組(zu)成。梯(ti)段(duan)板(ban)是一(yi)塊帶踏步的斜(xie)板(ban)，斜(xie)板(ban)支(zhi)承于上、下平臺(tai)梁(liang)上，底層下端支(zhi)承在(zai)地(di)壟墻上。板(ban)式(shi)(shi)樓梯(ti)的優(you)點(dian)是梯(ti)段(duan)板(ban)下表面(mian)平整，支(zhi)模簡(jian)單;其缺點(dian)是梯(ti)段(duan)板(ban)跨度較(jiao)大(da)(da)時，斜(xie)板(ban)厚度較(jiao)大(da)(da)，結構材料(liao)用量(liang)較(jiao)多。因(yin)此(ci)板(ban)式(shi)(shi)樓梯(ti)適用于可變(bian)荷載較(jiao)小(xiao)、梯(ti)段(duan)板(ban)跨度一(yi)般不大(da)(da)于3m的情(qing)況。