按結(jie)構形(xing)式(shi)和(he)受(shou)力特點(dian)樓梯形(xing)式(shi)可分(fen)為(wei)板式(shi)、梁(liang)式(shi)、懸挑(剪刀)式(shi)和(he)螺旋式(shi)，前兩種屬于平面受(shou)力體系(xi)，后(hou)兩種則為(wei)空(kong)間(jian)受(shou)力體系(xi)。

板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)(ti)是由(you)梯(ti)(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)和平臺(tai)梁(liang)(liang)組成。梯(ti)(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)是一(yi)塊帶踏步(bu)的(de)斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支承于(yu)上、下(xia)平臺(tai)梁(liang)(liang)上，底層下(xia)端支承在(zai)地壟(long)墻上。板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)(ti)的(de)優點(dian)是梯(ti)(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)下(xia)表(biao)面平整，支模簡單;其缺點(dian)是梯(ti)(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)跨(kua)度(du)(du)較大時，斜(xie)板(ban)(ban)(ban)厚度(du)(du)較大，結構材料用量較多。因此板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)(ti)適用于(yu)可變荷載(zai)較小(xiao)、梯(ti)(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)跨(kua)度(du)(du)一(yi)般不大于(yu)3m的(de)情況。