按結構形式(shi)(shi)和(he)受(shou)力(li)特點樓梯形式(shi)(shi)可分為(wei)板式(shi)(shi)、梁式(shi)(shi)、懸挑(tiao)(剪刀)式(shi)(shi)和(he)螺(luo)旋式(shi)(shi)，前兩種(zhong)屬于平(ping)面受(shou)力(li)體系(xi)，后兩種(zhong)則為(wei)空間受(shou)力(li)體系(xi)。

板(ban)(ban)式樓梯(ti)(ti)是(shi)(shi)由梯(ti)(ti)段(duan)板(ban)(ban)、平臺板(ban)(ban)和平臺梁組成。梯(ti)(ti)段(duan)板(ban)(ban)是(shi)(shi)一塊帶(dai)踏步(bu)的斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承于(yu)上、下(xia)(xia)(xia)平臺梁上，底(di)層下(xia)(xia)(xia)端(duan)支(zhi)承在地(di)壟墻上。板(ban)(ban)式樓梯(ti)(ti)的優(you)點是(shi)(shi)梯(ti)(ti)段(duan)板(ban)(ban)下(xia)(xia)(xia)表面平整，支(zhi)模(mo)簡單;其缺點是(shi)(shi)梯(ti)(ti)段(duan)板(ban)(ban)跨(kua)度較大(da)時，斜板(ban)(ban)厚度較大(da)，結構材料用量較多。因此(ci)板(ban)(ban)式樓梯(ti)(ti)適用于(yu)可變荷載(zai)較小、梯(ti)(ti)段(duan)板(ban)(ban)跨(kua)度一般不大(da)于(yu)3m的情況。