按(an)結(jie)構形式和受力特點樓梯形式可分為板式、梁式、懸挑(剪刀)式和螺旋式，前兩(liang)種屬于平(ping)面受力體系(xi)，后(hou)兩(liang)種則為空間受力體系(xi)。

板(ban)(ban)式樓(lou)梯(ti)是(shi)(shi)由(you)梯(ti)段(duan)(duan)(duan)板(ban)(ban)、平臺板(ban)(ban)和平臺梁組成。梯(ti)段(duan)(duan)(duan)板(ban)(ban)是(shi)(shi)一(yi)塊帶踏步的斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承于上(shang)、下(xia)(xia)平臺梁上(shang)，底層下(xia)(xia)端(duan)支(zhi)承在地壟墻上(shang)。板(ban)(ban)式樓(lou)梯(ti)的優點(dian)是(shi)(shi)梯(ti)段(duan)(duan)(duan)板(ban)(ban)下(xia)(xia)表(biao)面平整，支(zhi)模簡單;其缺點(dian)是(shi)(shi)梯(ti)段(duan)(duan)(duan)板(ban)(ban)跨度(du)較(jiao)大時，斜板(ban)(ban)厚度(du)較(jiao)大，結構材料用量較(jiao)多。因此(ci)板(ban)(ban)式樓(lou)梯(ti)適用于可變荷載較(jiao)小(xiao)、梯(ti)段(duan)(duan)(duan)板(ban)(ban)跨度(du)一(yi)般不大于3m的情況(kuang)。