按(an)結構(gou)形式(shi)(shi)和受力(li)特點樓梯形式(shi)(shi)可分(fen)為板式(shi)(shi)、梁(liang)式(shi)(shi)、懸(xuan)挑(剪刀)式(shi)(shi)和螺旋式(shi)(shi)，前兩(liang)種屬于平(ping)面受力(li)體系(xi)，后兩(liang)種則(ze)為空(kong)間(jian)受力(li)體系(xi)。

板(ban)(ban)(ban)(ban)(ban)式(shi)樓(lou)(lou)梯是由梯段(duan)板(ban)(ban)(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)(ban)(ban)和(he)平(ping)臺梁組成。梯段(duan)板(ban)(ban)(ban)(ban)(ban)是一塊帶踏(ta)步的斜(xie)(xie)板(ban)(ban)(ban)(ban)(ban)，斜(xie)(xie)板(ban)(ban)(ban)(ban)(ban)支(zhi)(zhi)承于(yu)上、下(xia)平(ping)臺梁上，底層下(xia)端支(zhi)(zhi)承在地(di)壟墻上。板(ban)(ban)(ban)(ban)(ban)式(shi)樓(lou)(lou)梯的優(you)點(dian)是梯段(duan)板(ban)(ban)(ban)(ban)(ban)下(xia)表面平(ping)整(zheng)，支(zhi)(zhi)模簡(jian)單;其缺點(dian)是梯段(duan)板(ban)(ban)(ban)(ban)(ban)跨度(du)較大時，斜(xie)(xie)板(ban)(ban)(ban)(ban)(ban)厚度(du)較大，結(jie)構材(cai)料用(yong)量較多。因此板(ban)(ban)(ban)(ban)(ban)式(shi)樓(lou)(lou)梯適(shi)用(yong)于(yu)可變荷(he)載(zai)較小、梯段(duan)板(ban)(ban)(ban)(ban)(ban)跨度(du)一般不大于(yu)3m的情況(kuang)。