按(an)結(jie)構形式和受(shou)力特點樓梯形式可分(fen)為(wei)板(ban)式、梁(liang)式、懸挑(tiao)(剪刀)式和螺旋(xuan)式，前(qian)兩(liang)種(zhong)屬于(yu)平面受(shou)力體(ti)系(xi)，后兩(liang)種(zhong)則為(wei)空間受(shou)力體(ti)系(xi)。

板(ban)(ban)(ban)式(shi)樓梯(ti)是由梯(ti)段(duan)板(ban)(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)(ban)和平(ping)(ping)臺(tai)梁組成。梯(ti)段(duan)板(ban)(ban)(ban)是一塊帶踏步的(de)斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支(zhi)(zhi)承于上、下(xia)(xia)平(ping)(ping)臺(tai)梁上，底層(ceng)下(xia)(xia)端(duan)支(zhi)(zhi)承在地壟墻上。板(ban)(ban)(ban)式(shi)樓梯(ti)的(de)優(you)點是梯(ti)段(duan)板(ban)(ban)(ban)下(xia)(xia)表面(mian)平(ping)(ping)整(zheng)，支(zhi)(zhi)模(mo)簡單(dan);其缺點是梯(ti)段(duan)板(ban)(ban)(ban)跨(kua)度較(jiao)大時，斜(xie)板(ban)(ban)(ban)厚度較(jiao)大，結構材料用量較(jiao)多。因此板(ban)(ban)(ban)式(shi)樓梯(ti)適(shi)用于可變荷載(zai)較(jiao)小、梯(ti)段(duan)板(ban)(ban)(ban)跨(kua)度一般不大于3m的(de)情況。