按(an)結構形式(shi)和(he)受力(li)特點(dian)樓(lou)梯形式(shi)可分為(wei)板式(shi)、梁式(shi)、懸挑(剪(jian)刀)式(shi)和(he)螺旋式(shi)，前兩種屬于平面受力(li)體系，后(hou)兩種則為(wei)空間受力(li)體系。

板(ban)(ban)式樓(lou)梯(ti)(ti)(ti)是(shi)由梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)、平(ping)臺(tai)(tai)板(ban)(ban)和平(ping)臺(tai)(tai)梁(liang)組成。梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)是(shi)一(yi)塊帶踏步的(de)(de)(de)斜板(ban)(ban)，斜板(ban)(ban)支(zhi)(zhi)承于上、下平(ping)臺(tai)(tai)梁(liang)上，底層下端支(zhi)(zhi)承在(zai)地壟墻上。板(ban)(ban)式樓(lou)梯(ti)(ti)(ti)的(de)(de)(de)優點是(shi)梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)下表(biao)面平(ping)整，支(zhi)(zhi)模(mo)簡單;其缺點是(shi)梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)跨度較大時，斜板(ban)(ban)厚度較大，結構(gou)材料用量較多。因此板(ban)(ban)式樓(lou)梯(ti)(ti)(ti)適用于可變荷載較小(xiao)、梯(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)跨度一(yi)般不大于3m的(de)(de)(de)情況。