按結構形(xing)式(shi)和受(shou)力特點樓梯形(xing)式(shi)可分為板式(shi)、梁式(shi)、懸挑(剪刀)式(shi)和螺旋式(shi)，前兩(liang)種(zhong)(zhong)屬(shu)于平面受(shou)力體(ti)系，后兩(liang)種(zhong)(zhong)則為空(kong)間受(shou)力體(ti)系。

板(ban)(ban)式樓梯是(shi)(shi)由梯段(duan)(duan)(duan)板(ban)(ban)、平(ping)臺板(ban)(ban)和平(ping)臺梁組成。梯段(duan)(duan)(duan)板(ban)(ban)是(shi)(shi)一塊帶踏步(bu)的斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支(zhi)(zhi)承于(yu)上、下平(ping)臺梁上，底層下端(duan)支(zhi)(zhi)承在地(di)壟(long)墻上。板(ban)(ban)式樓梯的優點是(shi)(shi)梯段(duan)(duan)(duan)板(ban)(ban)下表(biao)面平(ping)整(zheng)，支(zhi)(zhi)模簡(jian)單;其缺點是(shi)(shi)梯段(duan)(duan)(duan)板(ban)(ban)跨度較(jiao)大(da)時，斜(xie)板(ban)(ban)厚度較(jiao)大(da)，結(jie)構材(cai)料用(yong)量(liang)較(jiao)多(duo)。因此板(ban)(ban)式樓梯適(shi)用(yong)于(yu)可變荷載較(jiao)小、梯段(duan)(duan)(duan)板(ban)(ban)跨度一般不(bu)大(da)于(yu)3m的情(qing)況(kuang)。