按結構形(xing)式和受(shou)力特(te)點樓梯形(xing)式可(ke)分為(wei)板式、梁式、懸(xuan)挑(剪刀(dao))式和螺旋(xuan)式，前兩種(zhong)屬(shu)于平面受(shou)力體系(xi)，后(hou)兩種(zhong)則為(wei)空間受(shou)力體系(xi)。

板(ban)(ban)式(shi)(shi)樓梯是由梯段(duan)板(ban)(ban)、平臺板(ban)(ban)和平臺梁組(zu)成。梯段(duan)板(ban)(ban)是一塊(kuai)帶踏步的斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支(zhi)承于上(shang)、下平臺梁上(shang)，底層下端支(zhi)承在地壟墻上(shang)。板(ban)(ban)式(shi)(shi)樓梯的優點是梯段(duan)板(ban)(ban)下表面平整，支(zhi)模簡單;其缺點是梯段(duan)板(ban)(ban)跨(kua)度較大(da)時，斜(xie)板(ban)(ban)厚度較大(da)，結(jie)構材料用量較多。因此(ci)板(ban)(ban)式(shi)(shi)樓梯適(shi)用于可變荷載(zai)較小、梯段(duan)板(ban)(ban)跨(kua)度一般(ban)不(bu)大(da)于3m的情況(kuang)。