按結構形式和受(shou)力特點樓梯形式可分為(wei)板(ban)式、梁(liang)式、懸挑(tiao)(剪刀)式和螺旋(xuan)式，前兩(liang)種(zhong)屬于平面受(shou)力體(ti)系，后兩(liang)種(zhong)則為(wei)空(kong)間受(shou)力體(ti)系。

板(ban)(ban)(ban)式樓梯(ti)是(shi)由梯(ti)段(duan)板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和平(ping)臺梁組成。梯(ti)段(duan)板(ban)(ban)(ban)是(shi)一塊帶踏(ta)步的(de)斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支承(cheng)于上(shang)、下平(ping)臺梁上(shang)，底層下端支承(cheng)在地(di)壟墻上(shang)。板(ban)(ban)(ban)式樓梯(ti)的(de)優點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)下表(biao)面平(ping)整，支模簡單;其缺點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)(du)較大時，斜板(ban)(ban)(ban)厚度(du)(du)較大，結(jie)構材(cai)料用量較多。因此板(ban)(ban)(ban)式樓梯(ti)適(shi)用于可變荷載較小、梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)(du)一般不大于3m的(de)情況。