按結構形式(shi)(shi)和(he)(he)受(shou)力特點(dian)樓梯(ti)形式(shi)(shi)可分為(wei)(wei)板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和(he)(he)螺(luo)旋式(shi)(shi)，前兩種屬于平面受(shou)力體(ti)(ti)系，后兩種則為(wei)(wei)空間受(shou)力體(ti)(ti)系。

板(ban)式(shi)(shi)(shi)樓(lou)梯(ti)(ti)(ti)是由梯(ti)(ti)(ti)段(duan)板(ban)、平臺(tai)板(ban)和平臺(tai)梁組成。梯(ti)(ti)(ti)段(duan)板(ban)是一塊帶踏(ta)步(bu)的斜板(ban)，斜板(ban)支(zhi)承于上、下平臺(tai)梁上，底層下端支(zhi)承在地壟墻上。板(ban)式(shi)(shi)(shi)樓(lou)梯(ti)(ti)(ti)的優(you)點是梯(ti)(ti)(ti)段(duan)板(ban)下表面平整，支(zhi)模簡(jian)單;其缺(que)點是梯(ti)(ti)(ti)段(duan)板(ban)跨度(du)較(jiao)大時，斜板(ban)厚度(du)較(jiao)大，結構材料用量較(jiao)多。因此(ci)板(ban)式(shi)(shi)(shi)樓(lou)梯(ti)(ti)(ti)適用于可變荷載較(jiao)小、梯(ti)(ti)(ti)段(duan)板(ban)跨度(du)一般不(bu)大于3m的情況。