按(an)結構形式(shi)(shi)和受(shou)力(li)特點樓梯形式(shi)(shi)可(ke)分為板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和螺旋式(shi)(shi)，前兩(liang)種屬于平面受(shou)力(li)體系，后兩(liang)種則為空間受(shou)力(li)體系。

板(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)是(shi)由梯(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)、平臺板(ban)(ban)(ban)(ban)和平臺梁組成。梯(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)是(shi)一塊帶踏步的(de)斜(xie)板(ban)(ban)(ban)(ban)，斜(xie)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(duan)支承(cheng)在地(di)壟墻上(shang)。板(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)的(de)優點是(shi)梯(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)下(xia)(xia)表面(mian)平整，支模簡單;其缺點是(shi)梯(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)跨(kua)度較(jiao)大時，斜(xie)板(ban)(ban)(ban)(ban)厚(hou)度較(jiao)大，結構材料用(yong)量較(jiao)多。因此板(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)適用(yong)于(yu)可變荷(he)載較(jiao)小、梯(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)跨(kua)度一般不(bu)大于(yu)3m的(de)情(qing)況。