按(an)結構形式(shi)和受(shou)力特點樓梯形式(shi)可分為板式(shi)、梁式(shi)、懸挑(剪刀)式(shi)和螺旋(xuan)式(shi)，前(qian)兩(liang)種(zhong)屬于(yu)平面受(shou)力體(ti)系，后兩(liang)種(zhong)則為空間受(shou)力體(ti)系。

板(ban)(ban)(ban)式樓(lou)梯(ti)(ti)是由梯(ti)(ti)段(duan)板(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)和(he)平臺(tai)梁組(zu)成(cheng)。梯(ti)(ti)段(duan)板(ban)(ban)(ban)是一塊帶踏步的斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)(zhi)承(cheng)于上(shang)、下(xia)(xia)(xia)平臺(tai)梁上(shang)，底層下(xia)(xia)(xia)端支(zhi)(zhi)承(cheng)在地壟墻上(shang)。板(ban)(ban)(ban)式樓(lou)梯(ti)(ti)的優點是梯(ti)(ti)段(duan)板(ban)(ban)(ban)下(xia)(xia)(xia)表面平整，支(zhi)(zhi)模簡單;其缺點是梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨度(du)較大時，斜板(ban)(ban)(ban)厚度(du)較大，結構材料用量較多。因(yin)此(ci)板(ban)(ban)(ban)式樓(lou)梯(ti)(ti)適用于可(ke)變荷載較小、梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨度(du)一般(ban)不大于3m的情況(kuang)。