按結(jie)構形式(shi)和受力特點樓梯形式(shi)可(ke)分為板式(shi)、梁式(shi)、懸(xuan)挑(剪刀)式(shi)和螺旋式(shi)，前兩種屬于平(ping)面(mian)受力體系，后兩種則(ze)為空間受力體系。

板(ban)(ban)(ban)式樓梯(ti)(ti)是(shi)由(you)梯(ti)(ti)段(duan)板(ban)(ban)(ban)、平(ping)臺(tai)板(ban)(ban)(ban)和平(ping)臺(tai)梁組成。梯(ti)(ti)段(duan)板(ban)(ban)(ban)是(shi)一(yi)塊帶踏步的斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支承于(yu)上、下(xia)平(ping)臺(tai)梁上，底層下(xia)端支承在地壟墻上。板(ban)(ban)(ban)式樓梯(ti)(ti)的優點是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)下(xia)表(biao)面平(ping)整，支模簡單;其(qi)缺(que)點是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨度(du)較(jiao)大(da)時，斜(xie)板(ban)(ban)(ban)厚度(du)較(jiao)大(da)，結構(gou)材料用(yong)量較(jiao)多。因此(ci)板(ban)(ban)(ban)式樓梯(ti)(ti)適用(yong)于(yu)可變荷載較(jiao)小、梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨度(du)一(yi)般不大(da)于(yu)3m的情況。