按結構形式(shi)(shi)(shi)(shi)和受(shou)力特點樓梯形式(shi)(shi)(shi)(shi)可分(fen)為(wei)(wei)板式(shi)(shi)(shi)(shi)、梁式(shi)(shi)(shi)(shi)、懸挑(剪刀)式(shi)(shi)(shi)(shi)和螺旋式(shi)(shi)(shi)(shi)，前(qian)兩種(zhong)屬于(yu)平面受(shou)力體系，后兩種(zhong)則為(wei)(wei)空(kong)間受(shou)力體系。

板(ban)(ban)式樓梯是由梯段板(ban)(ban)、平(ping)臺板(ban)(ban)和(he)平(ping)臺梁組成。梯段板(ban)(ban)是一塊(kuai)帶踏(ta)步的斜板(ban)(ban)，斜板(ban)(ban)支承于(yu)上、下平(ping)臺梁上，底層下端支承在地(di)壟墻上。板(ban)(ban)式樓梯的優點是梯段板(ban)(ban)下表面(mian)平(ping)整，支模簡單;其缺點是梯段板(ban)(ban)跨度較(jiao)(jiao)大(da)時，斜板(ban)(ban)厚度較(jiao)(jiao)大(da)，結構材料用(yong)量較(jiao)(jiao)多(duo)。因此板(ban)(ban)式樓梯適用(yong)于(yu)可變荷載較(jiao)(jiao)小、梯段板(ban)(ban)跨度一般不大(da)于(yu)3m的情況。