按結構形(xing)式(shi)和受(shou)力特(te)點(dian)樓(lou)梯形(xing)式(shi)可分為(wei)板式(shi)、梁式(shi)、懸挑(剪(jian)刀)式(shi)和螺(luo)旋式(shi)，前兩種屬于(yu)平面受(shou)力體系，后兩種則(ze)為(wei)空間受(shou)力體系。

板(ban)(ban)(ban)式樓梯(ti)(ti)是(shi)由梯(ti)(ti)段板(ban)(ban)(ban)、平臺(tai)(tai)(tai)板(ban)(ban)(ban)和平臺(tai)(tai)(tai)梁組成。梯(ti)(ti)段板(ban)(ban)(ban)是(shi)一塊(kuai)帶(dai)踏步(bu)的斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支承于上、下平臺(tai)(tai)(tai)梁上，底層(ceng)下端支承在地壟墻(qiang)上。板(ban)(ban)(ban)式樓梯(ti)(ti)的優點是(shi)梯(ti)(ti)段板(ban)(ban)(ban)下表面平整，支模簡單;其缺點是(shi)梯(ti)(ti)段板(ban)(ban)(ban)跨度較大(da)時，斜(xie)板(ban)(ban)(ban)厚(hou)度較大(da)，結構材料用(yong)量較多。因此板(ban)(ban)(ban)式樓梯(ti)(ti)適用(yong)于可變荷載較小、梯(ti)(ti)段板(ban)(ban)(ban)跨度一般不大(da)于3m的情況。