按(an)結構(gou)形式(shi)和(he)受(shou)力(li)特點樓梯形式(shi)可分為板(ban)式(shi)、梁式(shi)、懸(xuan)挑(剪(jian)刀(dao))式(shi)和(he)螺旋(xuan)式(shi)，前兩種屬(shu)于平面受(shou)力(li)體系(xi)，后(hou)兩種則為空間受(shou)力(li)體系(xi)。

板(ban)(ban)式樓梯是由梯段(duan)(duan)板(ban)(ban)、平(ping)臺(tai)板(ban)(ban)和平(ping)臺(tai)梁(liang)組(zu)成。梯段(duan)(duan)板(ban)(ban)是一(yi)塊帶踏步的(de)斜(xie)(xie)板(ban)(ban)，斜(xie)(xie)板(ban)(ban)支(zhi)承于(yu)上(shang)、下平(ping)臺(tai)梁(liang)上(shang)，底層(ceng)下端支(zhi)承在地壟墻上(shang)。板(ban)(ban)式樓梯的(de)優點是梯段(duan)(duan)板(ban)(ban)下表(biao)面平(ping)整(zheng)，支(zhi)模簡單;其缺點是梯段(duan)(duan)板(ban)(ban)跨度較(jiao)(jiao)大(da)時(shi)，斜(xie)(xie)板(ban)(ban)厚度較(jiao)(jiao)大(da)，結(jie)構材(cai)料用(yong)量(liang)較(jiao)(jiao)多(duo)。因此板(ban)(ban)式樓梯適(shi)用(yong)于(yu)可變荷載較(jiao)(jiao)小、梯段(duan)(duan)板(ban)(ban)跨度一(yi)般不大(da)于(yu)3m的(de)情況。