按結構形(xing)(xing)式(shi)和(he)受力特(te)點(dian)樓梯形(xing)(xing)式(shi)可分為(wei)板式(shi)、梁式(shi)、懸(xuan)挑(tiao)(剪刀)式(shi)和(he)螺旋式(shi)，前(qian)兩種(zhong)屬于平面受力體系(xi)，后(hou)兩種(zhong)則為(wei)空間受力體系(xi)。

板(ban)(ban)(ban)式樓梯(ti)(ti)是(shi)(shi)由梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和(he)平(ping)臺梁(liang)組成。梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)是(shi)(shi)一塊帶踏(ta)步的(de)斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)(zhi)承于(yu)上(shang)、下(xia)平(ping)臺梁(liang)上(shang)，底(di)層下(xia)端(duan)支(zhi)(zhi)承在(zai)地壟(long)墻上(shang)。板(ban)(ban)(ban)式樓梯(ti)(ti)的(de)優點是(shi)(shi)梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)下(xia)表面平(ping)整(zheng)，支(zhi)(zhi)模簡單;其(qi)缺點是(shi)(shi)梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨度較大(da)時，斜板(ban)(ban)(ban)厚(hou)度較大(da)，結構(gou)材料用量較多。因(yin)此板(ban)(ban)(ban)式樓梯(ti)(ti)適(shi)用于(yu)可變荷(he)載較小、梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨度一般不(bu)大(da)于(yu)3m的(de)情況。