按(an)結(jie)構(gou)形式和受力(li)特點(dian)樓梯形式可分為板式、梁式、懸挑(tiao)(剪刀)式和螺旋式，前兩種屬于平面受力(li)體系(xi)，后(hou)兩種則為空間受力(li)體系(xi)。

板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)是(shi)由梯(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)、平臺板(ban)(ban)(ban)(ban)和平臺梁組成。梯(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)是(shi)一塊帶踏步(bu)的(de)(de)斜(xie)板(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)支(zhi)承(cheng)于(yu)上、下(xia)(xia)平臺梁上，底層下(xia)(xia)端支(zhi)承(cheng)在地壟墻上。板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)的(de)(de)優(you)點(dian)是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)下(xia)(xia)表面(mian)平整，支(zhi)模簡單(dan);其缺點(dian)是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)跨度較大(da)(da)時，斜(xie)板(ban)(ban)(ban)(ban)厚度較大(da)(da)，結(jie)構材料用量較多。因此板(ban)(ban)(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)(ban)(ban)跨度一般不大(da)(da)于(yu)3m的(de)(de)情況(kuang)。