按(an)結構形式(shi)(shi)和(he)受(shou)(shou)力特點樓梯(ti)形式(shi)(shi)可分為(wei)板式(shi)(shi)、梁式(shi)(shi)、懸(xuan)挑(剪刀)式(shi)(shi)和(he)螺(luo)旋式(shi)(shi)，前兩種屬于平(ping)面(mian)受(shou)(shou)力體系，后兩種則為(wei)空間受(shou)(shou)力體系。

板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)是由梯(ti)(ti)段(duan)板(ban)(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)(ban)和平(ping)(ping)臺(tai)梁(liang)(liang)組成。梯(ti)(ti)段(duan)板(ban)(ban)(ban)是一塊帶踏步的(de)斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)承(cheng)于上(shang)、下(xia)平(ping)(ping)臺(tai)梁(liang)(liang)上(shang)，底(di)層下(xia)端(duan)支(zhi)承(cheng)在(zai)地壟墻上(shang)。板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)的(de)優點(dian)是梯(ti)(ti)段(duan)板(ban)(ban)(ban)下(xia)表面(mian)平(ping)(ping)整，支(zhi)模簡(jian)單;其缺點(dian)是梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨度較大(da)時，斜板(ban)(ban)(ban)厚度較大(da)，結構材料用量較多(duo)。因此板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)適(shi)用于可變荷(he)載較小、梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨度一般不大(da)于3m的(de)情況。