按結構形(xing)式(shi)(shi)和(he)受力特點樓梯(ti)形(xing)式(shi)(shi)可分為板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪(jian)刀)式(shi)(shi)和(he)螺旋式(shi)(shi)，前兩種屬于平面受力體(ti)系，后(hou)兩種則(ze)為空間(jian)受力體(ti)系。

板式樓(lou)(lou)梯(ti)(ti)(ti)是(shi)由梯(ti)(ti)(ti)段(duan)(duan)板、平(ping)(ping)臺板和平(ping)(ping)臺梁(liang)組成。梯(ti)(ti)(ti)段(duan)(duan)板是(shi)一塊帶踏步的斜板，斜板支(zhi)承(cheng)于上、下平(ping)(ping)臺梁(liang)上，底層下端(duan)支(zhi)承(cheng)在地壟(long)墻上。板式樓(lou)(lou)梯(ti)(ti)(ti)的優點(dian)是(shi)梯(ti)(ti)(ti)段(duan)(duan)板下表(biao)面平(ping)(ping)整，支(zhi)模簡(jian)單;其缺點(dian)是(shi)梯(ti)(ti)(ti)段(duan)(duan)板跨度(du)較(jiao)大時(shi)，斜板厚度(du)較(jiao)大，結(jie)構材料用量較(jiao)多(duo)。因(yin)此板式樓(lou)(lou)梯(ti)(ti)(ti)適用于可(ke)變荷載較(jiao)小、梯(ti)(ti)(ti)段(duan)(duan)板跨度(du)一般(ban)不(bu)大于3m的情(qing)況。