按(an)結構形式(shi)和受(shou)(shou)力特點樓梯形式(shi)可分為(wei)板式(shi)、梁式(shi)、懸挑(剪(jian)刀)式(shi)和螺旋式(shi)，前兩(liang)(liang)種屬于平(ping)面受(shou)(shou)力體(ti)系，后(hou)兩(liang)(liang)種則為(wei)空間受(shou)(shou)力體(ti)系。

板(ban)(ban)式(shi)樓(lou)梯(ti)(ti)(ti)是由(you)梯(ti)(ti)(ti)段(duan)板(ban)(ban)、平臺板(ban)(ban)和平臺梁(liang)組成。梯(ti)(ti)(ti)段(duan)板(ban)(ban)是一(yi)塊(kuai)帶踏步的斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支承于上(shang)、下(xia)(xia)平臺梁(liang)上(shang)，底層下(xia)(xia)端支承在(zai)地壟墻(qiang)上(shang)。板(ban)(ban)式(shi)樓(lou)梯(ti)(ti)(ti)的優(you)點(dian)是梯(ti)(ti)(ti)段(duan)板(ban)(ban)下(xia)(xia)表(biao)面平整，支模簡單;其缺點(dian)是梯(ti)(ti)(ti)段(duan)板(ban)(ban)跨度較(jiao)大(da)時，斜(xie)板(ban)(ban)厚度較(jiao)大(da)，結構材料用(yong)量較(jiao)多。因(yin)此(ci)板(ban)(ban)式(shi)樓(lou)梯(ti)(ti)(ti)適用(yong)于可變(bian)荷載較(jiao)小、梯(ti)(ti)(ti)段(duan)板(ban)(ban)跨度一(yi)般不大(da)于3m的情況。