按結構形式和受(shou)力特點樓梯(ti)形式可分(fen)為(wei)板式、梁式、懸挑(剪(jian)刀(dao))式和螺旋式，前兩種屬于(yu)平面受(shou)力體(ti)系(xi)，后兩種則為(wei)空間受(shou)力體(ti)系(xi)。

板(ban)(ban)(ban)式(shi)樓(lou)梯是(shi)由梯段(duan)(duan)板(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)和平臺(tai)梁組成。梯段(duan)(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(shang)、下(xia)平臺(tai)梁上(shang)，底層下(xia)端支(zhi)(zhi)承(cheng)在地壟(long)墻上(shang)。板(ban)(ban)(ban)式(shi)樓(lou)梯的優點是(shi)梯段(duan)(duan)板(ban)(ban)(ban)下(xia)表(biao)面平整(zheng)，支(zhi)(zhi)模簡(jian)單(dan);其缺點是(shi)梯段(duan)(duan)板(ban)(ban)(ban)跨度較(jiao)(jiao)大時，斜板(ban)(ban)(ban)厚度較(jiao)(jiao)大，結構(gou)材料(liao)用量較(jiao)(jiao)多。因(yin)此板(ban)(ban)(ban)式(shi)樓(lou)梯適用于可變荷(he)載較(jiao)(jiao)小、梯段(duan)(duan)板(ban)(ban)(ban)跨度一般不大于3m的情況。