按結構形式(shi)(shi)和(he)受力(li)特點樓(lou)梯形式(shi)(shi)可分(fen)為板式(shi)(shi)、梁式(shi)(shi)、懸(xuan)挑(剪刀)式(shi)(shi)和(he)螺旋式(shi)(shi)，前兩種(zhong)(zhong)屬于平面受力(li)體系，后(hou)兩種(zhong)(zhong)則(ze)為空間受力(li)體系。

板(ban)(ban)(ban)(ban)(ban)式(shi)樓梯(ti)是由(you)梯(ti)段板(ban)(ban)(ban)(ban)(ban)、平(ping)(ping)臺(tai)(tai)板(ban)(ban)(ban)(ban)(ban)和平(ping)(ping)臺(tai)(tai)梁組成。梯(ti)段板(ban)(ban)(ban)(ban)(ban)是一(yi)塊帶(dai)踏步(bu)的斜(xie)板(ban)(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)(ban)支承(cheng)于上(shang)、下(xia)(xia)平(ping)(ping)臺(tai)(tai)梁上(shang)，底層下(xia)(xia)端支承(cheng)在地(di)壟墻上(shang)。板(ban)(ban)(ban)(ban)(ban)式(shi)樓梯(ti)的優點是梯(ti)段板(ban)(ban)(ban)(ban)(ban)下(xia)(xia)表面平(ping)(ping)整，支模簡(jian)單;其(qi)缺(que)點是梯(ti)段板(ban)(ban)(ban)(ban)(ban)跨度(du)較(jiao)(jiao)(jiao)大(da)時，斜(xie)板(ban)(ban)(ban)(ban)(ban)厚度(du)較(jiao)(jiao)(jiao)大(da)，結(jie)構材料用(yong)量(liang)較(jiao)(jiao)(jiao)多。因此板(ban)(ban)(ban)(ban)(ban)式(shi)樓梯(ti)適用(yong)于可變荷載較(jiao)(jiao)(jiao)小、梯(ti)段板(ban)(ban)(ban)(ban)(ban)跨度(du)一(yi)般不大(da)于3m的情況。