按結構(gou)形(xing)式和(he)受(shou)力(li)(li)特點樓(lou)梯形(xing)式可分(fen)為板(ban)式、梁(liang)式、懸挑(剪(jian)刀)式和(he)螺旋(xuan)式，前兩種(zhong)屬于平面受(shou)力(li)(li)體系(xi)，后(hou)兩種(zhong)則為空間受(shou)力(li)(li)體系(xi)。

板(ban)(ban)式(shi)(shi)樓(lou)(lou)梯(ti)是(shi)由梯(ti)段(duan)板(ban)(ban)、平(ping)臺板(ban)(ban)和平(ping)臺梁組成。梯(ti)段(duan)板(ban)(ban)是(shi)一(yi)塊(kuai)帶踏步的斜板(ban)(ban)，斜板(ban)(ban)支承于上(shang)(shang)、下(xia)平(ping)臺梁上(shang)(shang)，底層(ceng)下(xia)端(duan)支承在地壟(long)墻(qiang)上(shang)(shang)。板(ban)(ban)式(shi)(shi)樓(lou)(lou)梯(ti)的優點是(shi)梯(ti)段(duan)板(ban)(ban)下(xia)表面平(ping)整(zheng)，支模簡(jian)單;其缺點是(shi)梯(ti)段(duan)板(ban)(ban)跨(kua)度(du)較大時，斜板(ban)(ban)厚度(du)較大，結構材料用量(liang)較多。因此板(ban)(ban)式(shi)(shi)樓(lou)(lou)梯(ti)適用于可變荷載較小、梯(ti)段(duan)板(ban)(ban)跨(kua)度(du)一(yi)般不大于3m的情(qing)況。