按結構形(xing)式(shi)和(he)受力特點樓(lou)梯(ti)形(xing)式(shi)可分為(wei)板式(shi)、梁式(shi)、懸(xuan)挑(剪刀)式(shi)和(he)螺旋(xuan)式(shi)，前兩種屬于平面受力體系，后兩種則(ze)為(wei)空(kong)間受力體系。

板(ban)(ban)式(shi)樓(lou)梯(ti)(ti)(ti)是(shi)(shi)由梯(ti)(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)、平(ping)臺(tai)板(ban)(ban)和平(ping)臺(tai)梁組(zu)成。梯(ti)(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)是(shi)(shi)一塊帶踏步的斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承于(yu)上、下(xia)平(ping)臺(tai)梁上，底(di)層下(xia)端支(zhi)承在地壟墻上。板(ban)(ban)式(shi)樓(lou)梯(ti)(ti)(ti)的優點是(shi)(shi)梯(ti)(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)下(xia)表面平(ping)整(zheng)，支(zhi)模(mo)簡單(dan);其缺(que)點是(shi)(shi)梯(ti)(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)跨度較大(da)時，斜板(ban)(ban)厚度較大(da)，結構材料用量(liang)較多(duo)。因此(ci)板(ban)(ban)式(shi)樓(lou)梯(ti)(ti)(ti)適(shi)用于(yu)可變荷(he)載較小、梯(ti)(ti)(ti)段(duan)(duan)(duan)板(ban)(ban)跨度一般不(bu)大(da)于(yu)3m的情(qing)況。