按(an)結(jie)構形式和受力特(te)點樓梯形式可分為(wei)板(ban)式、梁式、懸挑(tiao)(剪刀(dao))式和螺(luo)旋式，前兩種屬于平面受力體系(xi)，后兩種則(ze)為(wei)空間受力體系(xi)。

板(ban)(ban)(ban)(ban)(ban)式(shi)(shi)樓(lou)梯(ti)(ti)是由梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)、平(ping)臺(tai)板(ban)(ban)(ban)(ban)(ban)和平(ping)臺(tai)梁組成。梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)是一(yi)塊帶踏步(bu)的斜板(ban)(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)(ban)支(zhi)承(cheng)于(yu)上、下平(ping)臺(tai)梁上，底(di)層下端支(zhi)承(cheng)在地(di)壟墻上。板(ban)(ban)(ban)(ban)(ban)式(shi)(shi)樓(lou)梯(ti)(ti)的優點是梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)下表面平(ping)整，支(zhi)模簡單(dan);其缺點是梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨(kua)度較大時，斜板(ban)(ban)(ban)(ban)(ban)厚度較大，結構材料用量較多。因此板(ban)(ban)(ban)(ban)(ban)式(shi)(shi)樓(lou)梯(ti)(ti)適用于(yu)可變(bian)荷載較小、梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨(kua)度一(yi)般(ban)不(bu)大于(yu)3m的情況。