按結構(gou)形(xing)式(shi)(shi)和受力(li)特點樓(lou)梯形(xing)式(shi)(shi)可分為板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀(dao))式(shi)(shi)和螺旋式(shi)(shi)，前(qian)兩種屬于平面受力(li)體系，后(hou)兩種則為空(kong)間受力(li)體系。

板(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)是(shi)由梯(ti)(ti)段板(ban)(ban)(ban)(ban)、平(ping)臺(tai)板(ban)(ban)(ban)(ban)和平(ping)臺(tai)梁組(zu)成。梯(ti)(ti)段板(ban)(ban)(ban)(ban)是(shi)一(yi)塊帶踏步的斜板(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)支承于上(shang)、下(xia)(xia)平(ping)臺(tai)梁上(shang)，底層下(xia)(xia)端支承在地(di)壟墻上(shang)。板(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)的優點(dian)是(shi)梯(ti)(ti)段板(ban)(ban)(ban)(ban)下(xia)(xia)表面平(ping)整，支模簡(jian)單;其缺(que)點(dian)是(shi)梯(ti)(ti)段板(ban)(ban)(ban)(ban)跨度較(jiao)(jiao)大時，斜板(ban)(ban)(ban)(ban)厚度較(jiao)(jiao)大，結構材料用量較(jiao)(jiao)多(duo)。因(yin)此板(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)適用于可變荷載(zai)較(jiao)(jiao)小、梯(ti)(ti)段板(ban)(ban)(ban)(ban)跨度一(yi)般不大于3m的情況。