按結構形(xing)式(shi)和受(shou)力(li)特(te)點樓梯形(xing)式(shi)可(ke)分為板(ban)式(shi)、梁(liang)式(shi)、懸挑(剪刀)式(shi)和螺旋式(shi)，前(qian)兩種屬于平(ping)面受(shou)力(li)體系(xi)，后兩種則(ze)為空間受(shou)力(li)體系(xi)。

板(ban)(ban)(ban)式樓梯是(shi)(shi)由梯段板(ban)(ban)(ban)、平(ping)臺(tai)板(ban)(ban)(ban)和平(ping)臺(tai)梁(liang)組成。梯段板(ban)(ban)(ban)是(shi)(shi)一(yi)塊帶(dai)踏步的(de)(de)斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)承于上(shang)(shang)、下平(ping)臺(tai)梁(liang)上(shang)(shang)，底(di)層下端支(zhi)承在地壟墻上(shang)(shang)。板(ban)(ban)(ban)式樓梯的(de)(de)優(you)點是(shi)(shi)梯段板(ban)(ban)(ban)下表面平(ping)整，支(zhi)模(mo)簡單;其缺(que)點是(shi)(shi)梯段板(ban)(ban)(ban)跨度較(jiao)大時，斜板(ban)(ban)(ban)厚度較(jiao)大，結構材(cai)料用量(liang)較(jiao)多。因此(ci)板(ban)(ban)(ban)式樓梯適用于可變(bian)荷載(zai)較(jiao)小、梯段板(ban)(ban)(ban)跨度一(yi)般不大于3m的(de)(de)情(qing)況。