按(an)結(jie)構形式(shi)和受(shou)力特點樓梯形式(shi)可分為板式(shi)、梁式(shi)、懸挑(剪刀)式(shi)和螺旋式(shi)，前兩(liang)種屬于平面受(shou)力體系(xi)，后兩(liang)種則為空間受(shou)力體系(xi)。

板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)(ti)(ti)是由(you)梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)(ban)(ban)和平(ping)(ping)臺(tai)梁組成。梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)是一塊帶踏(ta)步的斜(xie)板(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)支承于上(shang)、下平(ping)(ping)臺(tai)梁上(shang)，底層下端支承在地(di)壟墻上(shang)。板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)(ti)(ti)的優(you)點是梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)下表面平(ping)(ping)整，支模簡單;其缺點是梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)跨度較(jiao)大時，斜(xie)板(ban)(ban)(ban)(ban)厚度較(jiao)大，結構材(cai)料用量(liang)較(jiao)多。因此板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)(ti)(ti)適用于可變荷載較(jiao)小、梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)跨度一般不大于3m的情況。