按結構(gou)形式和(he)受力特點樓梯形式可(ke)分為板(ban)式、梁(liang)式、懸挑(剪刀(dao))式和(he)螺旋式，前兩種(zhong)屬于平面受力體(ti)系，后(hou)兩種(zhong)則為空(kong)間受力體(ti)系。

板(ban)(ban)式(shi)(shi)樓(lou)梯(ti)是由梯(ti)段(duan)板(ban)(ban)、平臺板(ban)(ban)和平臺梁組(zu)成。梯(ti)段(duan)板(ban)(ban)是一(yi)塊(kuai)帶踏步的斜板(ban)(ban)，斜板(ban)(ban)支(zhi)(zhi)承(cheng)于上(shang)、下平臺梁上(shang)，底(di)層下端支(zhi)(zhi)承(cheng)在地壟墻上(shang)。板(ban)(ban)式(shi)(shi)樓(lou)梯(ti)的優點(dian)(dian)是梯(ti)段(duan)板(ban)(ban)下表面(mian)平整，支(zhi)(zhi)模簡(jian)單;其缺點(dian)(dian)是梯(ti)段(duan)板(ban)(ban)跨度較大時，斜板(ban)(ban)厚度較大，結構材料用(yong)量(liang)較多。因此板(ban)(ban)式(shi)(shi)樓(lou)梯(ti)適用(yong)于可變荷(he)載較小(xiao)、梯(ti)段(duan)板(ban)(ban)跨度一(yi)般(ban)不大于3m的情況。