按結構(gou)形(xing)式(shi)(shi)和(he)受力特點樓(lou)梯(ti)形(xing)式(shi)(shi)可分為(wei)板式(shi)(shi)、梁式(shi)(shi)、懸(xuan)挑(剪(jian)刀(dao))式(shi)(shi)和(he)螺旋(xuan)式(shi)(shi)，前兩(liang)種(zhong)屬于平面受力體系，后兩(liang)種(zhong)則(ze)為(wei)空(kong)間受力體系。

板(ban)(ban)式樓梯是(shi)(shi)由梯段(duan)板(ban)(ban)、平臺板(ban)(ban)和平臺梁(liang)組成。梯段(duan)板(ban)(ban)是(shi)(shi)一塊帶踏步的(de)斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承于(yu)上、下平臺梁(liang)上，底層下端支(zhi)承在地壟(long)墻上。板(ban)(ban)式樓梯的(de)優點(dian)是(shi)(shi)梯段(duan)板(ban)(ban)下表面(mian)平整，支(zhi)模簡單;其缺點(dian)是(shi)(shi)梯段(duan)板(ban)(ban)跨度(du)(du)較(jiao)大(da)時(shi)，斜板(ban)(ban)厚度(du)(du)較(jiao)大(da)，結構材料用(yong)量(liang)較(jiao)多。因(yin)此(ci)板(ban)(ban)式樓梯適用(yong)于(yu)可(ke)變荷(he)載較(jiao)小(xiao)、梯段(duan)板(ban)(ban)跨度(du)(du)一般不大(da)于(yu)3m的(de)情(qing)況。