按結構形式(shi)(shi)和(he)受(shou)力特點樓梯形式(shi)(shi)可分為板(ban)式(shi)(shi)、梁(liang)式(shi)(shi)、懸挑(剪刀(dao))式(shi)(shi)和(he)螺(luo)旋(xuan)式(shi)(shi)，前(qian)兩種屬于平(ping)面受(shou)力體(ti)系，后(hou)兩種則(ze)為空間受(shou)力體(ti)系。

板(ban)(ban)(ban)式(shi)(shi)樓梯(ti)是(shi)由梯(ti)段(duan)板(ban)(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)(ban)和平(ping)(ping)臺(tai)梁組成。梯(ti)段(duan)板(ban)(ban)(ban)是(shi)一塊帶踏步的斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)(zhi)承(cheng)于上、下平(ping)(ping)臺(tai)梁上，底層下端支(zhi)(zhi)承(cheng)在地(di)壟墻上。板(ban)(ban)(ban)式(shi)(shi)樓梯(ti)的優點(dian)是(shi)梯(ti)段(duan)板(ban)(ban)(ban)下表面平(ping)(ping)整，支(zhi)(zhi)模簡單(dan);其缺點(dian)是(shi)梯(ti)段(duan)板(ban)(ban)(ban)跨(kua)度較大(da)時，斜板(ban)(ban)(ban)厚度較大(da)，結(jie)構(gou)材(cai)料用(yong)量較多。因此板(ban)(ban)(ban)式(shi)(shi)樓梯(ti)適用(yong)于可變(bian)荷(he)載較小、梯(ti)段(duan)板(ban)(ban)(ban)跨(kua)度一般不(bu)大(da)于3m的情況。