按結(jie)構形式(shi)(shi)和受(shou)(shou)力(li)特(te)點樓(lou)梯形式(shi)(shi)可分為(wei)板式(shi)(shi)、梁式(shi)(shi)、懸(xuan)挑(剪刀)式(shi)(shi)和螺旋式(shi)(shi)，前兩種屬于平面受(shou)(shou)力(li)體(ti)系，后兩種則(ze)為(wei)空間(jian)受(shou)(shou)力(li)體(ti)系。

板(ban)(ban)(ban)式樓(lou)梯(ti)是由(you)梯(ti)段(duan)(duan)板(ban)(ban)(ban)、平臺板(ban)(ban)(ban)和平臺梁(liang)組成。梯(ti)段(duan)(duan)板(ban)(ban)(ban)是一(yi)塊帶踏步的斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支(zhi)(zhi)承于(yu)(yu)上(shang)(shang)、下(xia)平臺梁(liang)上(shang)(shang)，底(di)層下(xia)端支(zhi)(zhi)承在(zai)地壟墻上(shang)(shang)。板(ban)(ban)(ban)式樓(lou)梯(ti)的優點(dian)是梯(ti)段(duan)(duan)板(ban)(ban)(ban)下(xia)表面平整，支(zhi)(zhi)模簡單;其(qi)缺(que)點(dian)是梯(ti)段(duan)(duan)板(ban)(ban)(ban)跨(kua)度較(jiao)大(da)時，斜(xie)板(ban)(ban)(ban)厚度較(jiao)大(da)，結構材料用量較(jiao)多。因(yin)此板(ban)(ban)(ban)式樓(lou)梯(ti)適用于(yu)(yu)可(ke)變荷載較(jiao)小、梯(ti)段(duan)(duan)板(ban)(ban)(ban)跨(kua)度一(yi)般不(bu)大(da)于(yu)(yu)3m的情況。