按結構形式(shi)(shi)和受力(li)特點樓梯(ti)形式(shi)(shi)可(ke)分(fen)為(wei)板(ban)式(shi)(shi)、梁式(shi)(shi)、懸挑(tiao)(剪刀)式(shi)(shi)和螺旋(xuan)式(shi)(shi)，前兩種(zhong)屬于平面受力(li)體(ti)系，后兩種(zhong)則為(wei)空間受力(li)體(ti)系。

板(ban)(ban)式樓(lou)梯(ti)是(shi)由梯(ti)段(duan)板(ban)(ban)、平(ping)臺板(ban)(ban)和平(ping)臺梁組成。梯(ti)段(duan)板(ban)(ban)是(shi)一塊帶踏步的斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承(cheng)于(yu)上(shang)、下(xia)平(ping)臺梁上(shang)，底層下(xia)端支(zhi)承(cheng)在地壟墻(qiang)上(shang)。板(ban)(ban)式樓(lou)梯(ti)的優點(dian)是(shi)梯(ti)段(duan)板(ban)(ban)下(xia)表面平(ping)整，支(zhi)模簡單;其缺點(dian)是(shi)梯(ti)段(duan)板(ban)(ban)跨(kua)度較大(da)(da)時，斜板(ban)(ban)厚(hou)度較大(da)(da)，結(jie)構(gou)材料用(yong)量較多。因(yin)此(ci)板(ban)(ban)式樓(lou)梯(ti)適用(yong)于(yu)可變荷載(zai)較小(xiao)、梯(ti)段(duan)板(ban)(ban)跨(kua)度一般不大(da)(da)于(yu)3m的情況。