按結構(gou)形式(shi)(shi)和(he)受(shou)(shou)力(li)特點樓梯形式(shi)(shi)可分為(wei)板(ban)式(shi)(shi)、梁(liang)式(shi)(shi)、懸(xuan)挑(剪刀)式(shi)(shi)和(he)螺(luo)旋(xuan)式(shi)(shi)，前兩(liang)種(zhong)屬(shu)于(yu)平面(mian)受(shou)(shou)力(li)體(ti)系，后兩(liang)種(zhong)則為(wei)空間受(shou)(shou)力(li)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)一塊帶踏步(bu)的(de)斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支承(cheng)(cheng)于上(shang)、下(xia)平(ping)臺梁上(shang)，底層(ceng)下(xia)端支承(cheng)(cheng)在(zai)地壟墻上(shang)。板(ban)(ban)(ban)式樓梯(ti)的(de)優點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)下(xia)表面平(ping)整，支模簡單;其(qi)缺點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)(du)較大(da)時，斜板(ban)(ban)(ban)厚度(du)(du)較大(da)，結構材料用量較多。因此板(ban)(ban)(ban)式樓梯(ti)適用于可變(bian)荷載(zai)較小、梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)(du)一般(ban)不大(da)于3m的(de)情況。