按結構(gou)形(xing)式(shi)(shi)和受力(li)特點(dian)樓梯形(xing)式(shi)(shi)可分為板式(shi)(shi)、梁式(shi)(shi)、懸(xuan)挑(剪刀)式(shi)(shi)和螺旋式(shi)(shi)，前兩種(zhong)屬于平面受力(li)體系(xi)，后兩種(zhong)則為空(kong)間受力(li)體系(xi)。

板(ban)(ban)(ban)式(shi)樓(lou)(lou)梯(ti)是由梯(ti)段板(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)和平臺(tai)梁組成。梯(ti)段板(ban)(ban)(ban)是一塊帶踏步(bu)的斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支(zhi)(zhi)承于(yu)上(shang)、下(xia)平臺(tai)梁上(shang)，底(di)層下(xia)端支(zhi)(zhi)承在地壟(long)墻上(shang)。板(ban)(ban)(ban)式(shi)樓(lou)(lou)梯(ti)的優點(dian)是梯(ti)段板(ban)(ban)(ban)下(xia)表面平整，支(zhi)(zhi)模簡單;其缺點(dian)是梯(ti)段板(ban)(ban)(ban)跨度(du)較大時，斜(xie)板(ban)(ban)(ban)厚度(du)較大，結構材料(liao)用(yong)量較多。因此(ci)板(ban)(ban)(ban)式(shi)樓(lou)(lou)梯(ti)適用(yong)于(yu)可變荷(he)載較小、梯(ti)段板(ban)(ban)(ban)跨度(du)一般不大于(yu)3m的情(qing)況。