按結構形式(shi)(shi)和受(shou)力(li)特點(dian)樓梯形式(shi)(shi)可分為(wei)板(ban)式(shi)(shi)、梁(liang)式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和螺旋(xuan)式(shi)(shi)，前(qian)兩(liang)種屬(shu)于平(ping)面受(shou)力(li)體系，后(hou)兩(liang)種則為(wei)空(kong)間(jian)受(shou)力(li)體系。

板(ban)(ban)(ban)(ban)(ban)式樓(lou)梯(ti)是由(you)梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)(ban)(ban)和平臺(tai)梁(liang)(liang)組成(cheng)。梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)是一塊帶踏(ta)步的(de)斜(xie)(xie)板(ban)(ban)(ban)(ban)(ban)，斜(xie)(xie)板(ban)(ban)(ban)(ban)(ban)支(zhi)(zhi)承于(yu)(yu)上(shang)、下平臺(tai)梁(liang)(liang)上(shang)，底層下端支(zhi)(zhi)承在地壟墻上(shang)。板(ban)(ban)(ban)(ban)(ban)式樓(lou)梯(ti)的(de)優點是梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)下表面平整，支(zhi)(zhi)模簡單(dan);其缺點是梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨(kua)(kua)度較(jiao)(jiao)大時，斜(xie)(xie)板(ban)(ban)(ban)(ban)(ban)厚度較(jiao)(jiao)大，結(jie)構材料(liao)用量較(jiao)(jiao)多。因(yin)此板(ban)(ban)(ban)(ban)(ban)式樓(lou)梯(ti)適用于(yu)(yu)可變荷載較(jiao)(jiao)小、梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨(kua)(kua)度一般不大于(yu)(yu)3m的(de)情(qing)況。