按結構形(xing)式(shi)(shi)和受力特(te)點樓梯形(xing)式(shi)(shi)可分為板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和螺旋式(shi)(shi)，前兩(liang)種(zhong)屬于平面受力體(ti)系，后兩(liang)種(zhong)則為空間(jian)受力體(ti)系。

板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)(ti)是(shi)由梯(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)(ban)和(he)平臺(tai)梁組成。梯(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)(ban)(ban)是(shi)一(yi)(yi)塊帶踏步(bu)的(de)(de)斜(xie)(xie)板(ban)(ban)(ban)(ban)，斜(xie)(xie)板(ban)(ban)(ban)(ban)支承于上、下(xia)平臺(tai)梁上，底層(ceng)下(xia)端支承在地(di)壟墻上。板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)(ti)的(de)(de)優點(dian)是(shi)梯(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)(ban)(ban)下(xia)表面平整，支模(mo)簡單;其缺點(dian)是(shi)梯(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)(ban)(ban)跨(kua)度(du)(du)較大時，斜(xie)(xie)板(ban)(ban)(ban)(ban)厚度(du)(du)較大，結構(gou)材料用量較多。因此板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)(ti)適用于可變荷載(zai)較小、梯(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)(ban)(ban)跨(kua)度(du)(du)一(yi)(yi)般不大于3m的(de)(de)情況。