按結構形(xing)式(shi)和受力特點樓梯形(xing)式(shi)可(ke)分為板式(shi)、梁式(shi)、懸挑(剪刀)式(shi)和螺旋(xuan)式(shi)，前(qian)兩種屬于(yu)平面受力體系(xi)，后兩種則(ze)為空間受力體系(xi)。

板(ban)(ban)(ban)式(shi)(shi)樓(lou)梯(ti)是由梯(ti)段(duan)(duan)板(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)和平臺(tai)梁組成。梯(ti)段(duan)(duan)板(ban)(ban)(ban)是一塊帶踏步(bu)的斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支承于上、下平臺(tai)梁上，底層下端支承在地壟(long)墻上。板(ban)(ban)(ban)式(shi)(shi)樓(lou)梯(ti)的優點是梯(ti)段(duan)(duan)板(ban)(ban)(ban)下表面(mian)平整，支模(mo)簡單;其缺點是梯(ti)段(duan)(duan)板(ban)(ban)(ban)跨(kua)度(du)較(jiao)大(da)時，斜(xie)板(ban)(ban)(ban)厚度(du)較(jiao)大(da)，結(jie)構(gou)材(cai)料(liao)用量較(jiao)多。因此板(ban)(ban)(ban)式(shi)(shi)樓(lou)梯(ti)適用于可變(bian)荷載較(jiao)小、梯(ti)段(duan)(duan)板(ban)(ban)(ban)跨(kua)度(du)一般不大(da)于3m的情況。