按結構形式和受(shou)力特點樓梯形式可分為(wei)板式、梁式、懸挑(剪刀)式和螺旋式，前兩(liang)種屬(shu)于平面受(shou)力體系(xi)，后兩(liang)種則為(wei)空間(jian)受(shou)力體系(xi)。

板(ban)(ban)式樓梯(ti)(ti)是由梯(ti)(ti)段(duan)板(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)和平(ping)(ping)臺(tai)梁組成。梯(ti)(ti)段(duan)板(ban)(ban)是一塊帶踏步的斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承于上(shang)(shang)、下(xia)平(ping)(ping)臺(tai)梁上(shang)(shang)，底層下(xia)端支(zhi)承在地壟墻上(shang)(shang)。板(ban)(ban)式樓梯(ti)(ti)的優點(dian)(dian)是梯(ti)(ti)段(duan)板(ban)(ban)下(xia)表面(mian)平(ping)(ping)整(zheng)，支(zhi)模簡單;其缺點(dian)(dian)是梯(ti)(ti)段(duan)板(ban)(ban)跨度(du)較大(da)(da)時，斜板(ban)(ban)厚(hou)度(du)較大(da)(da)，結構材料用量較多(duo)。因(yin)此板(ban)(ban)式樓梯(ti)(ti)適用于可變荷載較小、梯(ti)(ti)段(duan)板(ban)(ban)跨度(du)一般不(bu)大(da)(da)于3m的情況。