按結構形式(shi)(shi)和受(shou)力特點(dian)樓梯(ti)形式(shi)(shi)可分為板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和螺(luo)旋式(shi)(shi)，前兩種(zhong)屬于平面受(shou)力體(ti)(ti)系，后兩種(zhong)則為空間(jian)受(shou)力體(ti)(ti)系。

板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)是(shi)(shi)由梯(ti)段板(ban)(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)(ban)和平臺(tai)梁(liang)組成。梯(ti)段板(ban)(ban)(ban)(ban)是(shi)(shi)一塊(kuai)帶踏步(bu)的(de)斜板(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)支承于(yu)上、下(xia)平臺(tai)梁(liang)上，底(di)層(ceng)下(xia)端支承在地壟墻上。板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)的(de)優點(dian)是(shi)(shi)梯(ti)段板(ban)(ban)(ban)(ban)下(xia)表面平整，支模簡(jian)單;其缺點(dian)是(shi)(shi)梯(ti)段板(ban)(ban)(ban)(ban)跨度較大(da)時，斜板(ban)(ban)(ban)(ban)厚度較大(da)，結構材料(liao)用量較多。因此板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)適用于(yu)可變荷載(zai)較小(xiao)、梯(ti)段板(ban)(ban)(ban)(ban)跨度一般不大(da)于(yu)3m的(de)情況(kuang)。