按(an)結(jie)構形式(shi)和受(shou)力特點樓梯形式(shi)可分為(wei)板式(shi)、梁(liang)式(shi)、懸挑(剪(jian)刀)式(shi)和螺旋式(shi)，前兩種(zhong)屬于平面(mian)受(shou)力體系(xi)(xi)，后(hou)兩種(zhong)則為(wei)空間受(shou)力體系(xi)(xi)。

板(ban)(ban)式(shi)(shi)樓(lou)梯(ti)(ti)(ti)是(shi)(shi)由梯(ti)(ti)(ti)段板(ban)(ban)、平(ping)臺板(ban)(ban)和平(ping)臺梁組(zu)成。梯(ti)(ti)(ti)段板(ban)(ban)是(shi)(shi)一塊帶踏(ta)步的(de)斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支承于(yu)上(shang)、下平(ping)臺梁上(shang)，底(di)層下端支承在地(di)壟(long)墻(qiang)上(shang)。板(ban)(ban)式(shi)(shi)樓(lou)梯(ti)(ti)(ti)的(de)優點是(shi)(shi)梯(ti)(ti)(ti)段板(ban)(ban)下表面平(ping)整，支模(mo)簡單;其缺點是(shi)(shi)梯(ti)(ti)(ti)段板(ban)(ban)跨度較大(da)時，斜(xie)板(ban)(ban)厚度較大(da)，結構材(cai)料用(yong)量較多。因此板(ban)(ban)式(shi)(shi)樓(lou)梯(ti)(ti)(ti)適用(yong)于(yu)可(ke)變荷(he)載較小、梯(ti)(ti)(ti)段板(ban)(ban)跨度一般(ban)不大(da)于(yu)3m的(de)情況。