按結構形式和受力特點樓梯形式可(ke)分為板式、梁式、懸挑(tiao)(剪刀)式和螺旋(xuan)式，前兩(liang)種(zhong)(zhong)屬于平面受力體系，后兩(liang)種(zhong)(zhong)則(ze)為空(kong)間受力體系。

板(ban)(ban)式樓(lou)(lou)梯(ti)是(shi)(shi)由(you)梯(ti)段板(ban)(ban)、平(ping)臺板(ban)(ban)和平(ping)臺梁組成(cheng)。梯(ti)段板(ban)(ban)是(shi)(shi)一(yi)塊帶踏(ta)步(bu)的(de)斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承于(yu)上、下平(ping)臺梁上，底層(ceng)下端支(zhi)承在地(di)壟墻上。板(ban)(ban)式樓(lou)(lou)梯(ti)的(de)優點(dian)是(shi)(shi)梯(ti)段板(ban)(ban)下表面平(ping)整，支(zhi)模簡(jian)單;其缺點(dian)是(shi)(shi)梯(ti)段板(ban)(ban)跨(kua)度(du)較(jiao)(jiao)(jiao)大時，斜板(ban)(ban)厚度(du)較(jiao)(jiao)(jiao)大，結(jie)構(gou)材料用量較(jiao)(jiao)(jiao)多。因(yin)此板(ban)(ban)式樓(lou)(lou)梯(ti)適用于(yu)可變荷載較(jiao)(jiao)(jiao)小、梯(ti)段板(ban)(ban)跨(kua)度(du)一(yi)般不大于(yu)3m的(de)情況。