按(an)結構形式(shi)(shi)(shi)和受(shou)力特(te)點樓梯形式(shi)(shi)(shi)可分為(wei)板式(shi)(shi)(shi)、梁式(shi)(shi)(shi)、懸挑(tiao)(剪(jian)刀)式(shi)(shi)(shi)和螺旋式(shi)(shi)(shi)，前兩種(zhong)屬于平面受(shou)力體系，后(hou)兩種(zhong)則為(wei)空間受(shou)力體系。

板(ban)式(shi)樓(lou)梯(ti)是(shi)(shi)由梯(ti)段(duan)板(ban)、平臺(tai)板(ban)和(he)平臺(tai)梁組成。梯(ti)段(duan)板(ban)是(shi)(shi)一塊帶踏步的斜板(ban)，斜板(ban)支(zhi)承于(yu)上、下(xia)平臺(tai)梁上，底層下(xia)端支(zhi)承在地壟墻(qiang)上。板(ban)式(shi)樓(lou)梯(ti)的優點(dian)是(shi)(shi)梯(ti)段(duan)板(ban)下(xia)表(biao)面平整，支(zhi)模簡單;其缺點(dian)是(shi)(shi)梯(ti)段(duan)板(ban)跨度較大時，斜板(ban)厚度較大，結構材料用量較多。因(yin)此(ci)板(ban)式(shi)樓(lou)梯(ti)適用于(yu)可變荷載(zai)較小、梯(ti)段(duan)板(ban)跨度一般不大于(yu)3m的情況。