按結構形(xing)式和受力特點樓梯形(xing)式可分為板式、梁(liang)式、懸挑(剪(jian)刀)式和螺旋式，前兩種(zhong)屬于平面受力體(ti)(ti)系，后兩種(zhong)則為空間受力體(ti)(ti)系。

板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)是由梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)(ban)(ban)和平(ping)(ping)臺(tai)梁(liang)(liang)組(zu)成。梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)是一(yi)塊帶(dai)踏步的斜(xie)板(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)支(zhi)承(cheng)于上(shang)(shang)、下平(ping)(ping)臺(tai)梁(liang)(liang)上(shang)(shang)，底層下端支(zhi)承(cheng)在地壟(long)墻上(shang)(shang)。板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)的優點是梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)下表(biao)面平(ping)(ping)整，支(zhi)模簡單;其(qi)缺點是梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)跨度較(jiao)大時，斜(xie)板(ban)(ban)(ban)(ban)厚(hou)度較(jiao)大，結(jie)構材料用量較(jiao)多。因此板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)適(shi)用于可變荷載較(jiao)小(xiao)、梯(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)跨度一(yi)般不(bu)大于3m的情(qing)況。