按結構形式(shi)和(he)受(shou)力特點樓梯形式(shi)可分為(wei)板式(shi)、梁(liang)式(shi)、懸挑(剪刀)式(shi)和(he)螺旋(xuan)式(shi)，前兩種(zhong)屬于平面受(shou)力體系，后兩種(zhong)則為(wei)空間受(shou)力體系。

板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)是由(you)梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和平(ping)臺梁組成。梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)是一(yi)塊帶踏步(bu)的斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支承于(yu)上、下平(ping)臺梁上，底層下端支承在地壟墻上。板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)的優(you)點是梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)下表面平(ping)整，支模(mo)簡單;其(qi)缺(que)點是梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨(kua)(kua)度(du)(du)較大時，斜板(ban)(ban)(ban)厚度(du)(du)較大，結構材料(liao)用量較多。因此板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)適用于(yu)可變(bian)荷(he)載較小、梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨(kua)(kua)度(du)(du)一(yi)般(ban)不大于(yu)3m的情況(kuang)。