按(an)結構形(xing)式和受(shou)(shou)力(li)特點樓梯形(xing)式可分為板式、梁式、懸挑(tiao)(剪刀)式和螺旋式，前兩種屬于平面受(shou)(shou)力(li)體(ti)系(xi)，后兩種則為空間受(shou)(shou)力(li)體(ti)系(xi)。

板(ban)(ban)(ban)(ban)(ban)式樓梯(ti)(ti)是(shi)由梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)(ban)(ban)和(he)平臺(tai)梁組成。梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)是(shi)一塊帶踏步(bu)的(de)斜板(ban)(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)(ban)支(zhi)承于上(shang)(shang)、下平臺(tai)梁上(shang)(shang)，底層下端支(zhi)承在地壟墻(qiang)上(shang)(shang)。板(ban)(ban)(ban)(ban)(ban)式樓梯(ti)(ti)的(de)優點是(shi)梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)下表(biao)面平整，支(zhi)模簡單;其(qi)缺點是(shi)梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨度(du)較(jiao)大時，斜板(ban)(ban)(ban)(ban)(ban)厚(hou)度(du)較(jiao)大，結構材(cai)料用(yong)(yong)量較(jiao)多。因此板(ban)(ban)(ban)(ban)(ban)式樓梯(ti)(ti)適用(yong)(yong)于可變荷載較(jiao)小、梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨度(du)一般不大于3m的(de)情(qing)況(kuang)。