按(an)結構形式和受(shou)力特點樓梯形式可分為板式、梁式、懸挑(剪刀)式和螺旋式，前(qian)兩種(zhong)屬于平面受(shou)力體系(xi)，后兩種(zhong)則為空間(jian)受(shou)力體系(xi)。

板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)(ti)(ti)(ti)是由梯(ti)(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)、平(ping)(ping)(ping)臺(tai)(tai)板(ban)(ban)(ban)(ban)和平(ping)(ping)(ping)臺(tai)(tai)梁(liang)組成。梯(ti)(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)是一塊帶踏步(bu)的(de)斜板(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)支(zhi)承于(yu)上、下平(ping)(ping)(ping)臺(tai)(tai)梁(liang)上，底(di)層下端支(zhi)承在地壟墻上。板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)(ti)(ti)(ti)的(de)優點(dian)是梯(ti)(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)下表面平(ping)(ping)(ping)整，支(zhi)模簡單;其缺點(dian)是梯(ti)(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)跨度較(jiao)大(da)時，斜板(ban)(ban)(ban)(ban)厚度較(jiao)大(da)，結構材料用(yong)(yong)量較(jiao)多(duo)。因此板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)(ti)(ti)(ti)適用(yong)(yong)于(yu)可變荷載較(jiao)小、梯(ti)(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)跨度一般不(bu)大(da)于(yu)3m的(de)情況。