按結構形(xing)(xing)式和受力(li)特點樓梯形(xing)(xing)式可分為板式、梁式、懸挑(剪(jian)刀)式和螺旋(xuan)式，前兩種(zhong)屬于(yu)平面受力(li)體系，后兩種(zhong)則(ze)為空間受力(li)體系。

板(ban)(ban)(ban)(ban)(ban)式(shi)樓(lou)梯(ti)(ti)是(shi)由梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)(ban)(ban)和平(ping)臺梁組(zu)成。梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)是(shi)一塊(kuai)帶踏步的(de)斜(xie)(xie)板(ban)(ban)(ban)(ban)(ban)，斜(xie)(xie)板(ban)(ban)(ban)(ban)(ban)支(zhi)承(cheng)于(yu)上(shang)、下平(ping)臺梁上(shang)，底層下端支(zhi)承(cheng)在地(di)壟(long)墻上(shang)。板(ban)(ban)(ban)(ban)(ban)式(shi)樓(lou)梯(ti)(ti)的(de)優點(dian)是(shi)梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)下表面平(ping)整，支(zhi)模簡單;其缺點(dian)是(shi)梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨度(du)較大(da)時，斜(xie)(xie)板(ban)(ban)(ban)(ban)(ban)厚度(du)較大(da)，結構材料用量(liang)較多。因此(ci)板(ban)(ban)(ban)(ban)(ban)式(shi)樓(lou)梯(ti)(ti)適用于(yu)可變(bian)荷載(zai)較小、梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨度(du)一般不大(da)于(yu)3m的(de)情況(kuang)。