按結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(luo)旋(xuan)式，前兩種(zhong)屬于平面受力體系(xi)，后兩種(zhong)則(ze)為空間受力體系(xi)。

板(ban)(ban)(ban)(ban)式(shi)樓梯是(shi)(shi)由梯段(duan)板(ban)(ban)(ban)(ban)、平臺板(ban)(ban)(ban)(ban)和平臺梁組成。梯段(duan)板(ban)(ban)(ban)(ban)是(shi)(shi)一塊帶(dai)踏步的斜板(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)支承(cheng)于(yu)上(shang)、下(xia)(xia)平臺梁上(shang)，底層下(xia)(xia)端支承(cheng)在地壟墻上(shang)。板(ban)(ban)(ban)(ban)式(shi)樓梯的優點(dian)是(shi)(shi)梯段(duan)板(ban)(ban)(ban)(ban)下(xia)(xia)表面平整，支模(mo)簡單;其缺點(dian)是(shi)(shi)梯段(duan)板(ban)(ban)(ban)(ban)跨(kua)度較(jiao)大時(shi)，斜板(ban)(ban)(ban)(ban)厚度較(jiao)大，結構(gou)材料用量較(jiao)多。因此板(ban)(ban)(ban)(ban)式(shi)樓梯適用于(yu)可變荷載較(jiao)小、梯段(duan)板(ban)(ban)(ban)(ban)跨(kua)度一般不大于(yu)3m的情況(kuang)。