按結構形(xing)式(shi)(shi)和受(shou)力(li)特(te)點(dian)樓梯(ti)形(xing)式(shi)(shi)可分為(wei)板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀(dao))式(shi)(shi)和螺(luo)旋式(shi)(shi)，前兩種(zhong)屬于平面受(shou)力(li)體系(xi)，后兩種(zhong)則為(wei)空間受(shou)力(li)體系(xi)。

板(ban)式(shi)樓(lou)梯(ti)(ti)(ti)是(shi)(shi)由梯(ti)(ti)(ti)段板(ban)、平臺(tai)板(ban)和(he)平臺(tai)梁組成。梯(ti)(ti)(ti)段板(ban)是(shi)(shi)一塊帶踏步的斜(xie)板(ban)，斜(xie)板(ban)支承(cheng)(cheng)于(yu)上(shang)、下(xia)(xia)平臺(tai)梁上(shang)，底層下(xia)(xia)端支承(cheng)(cheng)在(zai)地壟墻上(shang)。板(ban)式(shi)樓(lou)梯(ti)(ti)(ti)的優點是(shi)(shi)梯(ti)(ti)(ti)段板(ban)下(xia)(xia)表(biao)面(mian)平整，支模簡單;其缺點是(shi)(shi)梯(ti)(ti)(ti)段板(ban)跨(kua)度較大(da)時，斜(xie)板(ban)厚度較大(da)，結構材料用(yong)量較多。因此板(ban)式(shi)樓(lou)梯(ti)(ti)(ti)適用(yong)于(yu)可變荷載(zai)較小、梯(ti)(ti)(ti)段板(ban)跨(kua)度一般不大(da)于(yu)3m的情況。