按結(jie)構形式(shi)(shi)和受(shou)(shou)力(li)特點(dian)樓(lou)梯形式(shi)(shi)可分為(wei)板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪(jian)刀)式(shi)(shi)和螺旋式(shi)(shi)，前兩種屬于(yu)平面受(shou)(shou)力(li)體系，后兩種則為(wei)空(kong)間(jian)受(shou)(shou)力(li)體系。

板(ban)(ban)(ban)式樓梯是(shi)由梯段(duan)板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和平(ping)臺梁(liang)組(zu)成。梯段(duan)板(ban)(ban)(ban)是(shi)一塊帶踏步的(de)斜(xie)(xie)板(ban)(ban)(ban)，斜(xie)(xie)板(ban)(ban)(ban)支(zhi)(zhi)承于上(shang)(shang)、下(xia)平(ping)臺梁(liang)上(shang)(shang)，底層(ceng)下(xia)端(duan)支(zhi)(zhi)承在地壟墻上(shang)(shang)。板(ban)(ban)(ban)式樓梯的(de)優點(dian)是(shi)梯段(duan)板(ban)(ban)(ban)下(xia)表(biao)面平(ping)整，支(zhi)(zhi)模簡單(dan);其缺(que)點(dian)是(shi)梯段(duan)板(ban)(ban)(ban)跨度較(jiao)(jiao)大(da)時，斜(xie)(xie)板(ban)(ban)(ban)厚度較(jiao)(jiao)大(da)，結構材料用(yong)量較(jiao)(jiao)多。因此板(ban)(ban)(ban)式樓梯適(shi)用(yong)于可(ke)變(bian)荷載較(jiao)(jiao)小、梯段(duan)板(ban)(ban)(ban)跨度一般不大(da)于3m的(de)情況。