按結構(gou)形式和受(shou)力(li)特點樓梯形式可分為板式、梁(liang)式、懸挑(剪(jian)刀)式和螺(luo)旋(xuan)式，前兩種屬于平面(mian)受(shou)力(li)體系，后兩種則(ze)為空(kong)間受(shou)力(li)體系。

板(ban)(ban)式(shi)樓梯(ti)是由(you)梯(ti)段板(ban)(ban)、平臺板(ban)(ban)和平臺梁組成。梯(ti)段板(ban)(ban)是一(yi)塊帶踏步的斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支(zhi)承于上、下(xia)平臺梁上，底層(ceng)下(xia)端(duan)支(zhi)承在地壟墻上。板(ban)(ban)式(shi)樓梯(ti)的優(you)點是梯(ti)段板(ban)(ban)下(xia)表面(mian)平整，支(zhi)模(mo)簡單;其缺點是梯(ti)段板(ban)(ban)跨(kua)度(du)較大(da)時(shi)，斜(xie)板(ban)(ban)厚度(du)較大(da)，結構材料用(yong)(yong)量較多。因(yin)此板(ban)(ban)式(shi)樓梯(ti)適(shi)用(yong)(yong)于可變(bian)荷載較小、梯(ti)段板(ban)(ban)跨(kua)度(du)一(yi)般(ban)不(bu)大(da)于3m的情況。