按結構形式和受力(li)特點樓梯形式可分為板式、梁式、懸挑(剪刀(dao))式和螺旋式，前(qian)兩種(zhong)屬于平面受力(li)體系，后兩種(zhong)則為空間受力(li)體系。

板(ban)(ban)(ban)式樓(lou)(lou)梯(ti)是(shi)由梯(ti)段(duan)板(ban)(ban)(ban)、平臺板(ban)(ban)(ban)和平臺梁組成(cheng)。梯(ti)段(duan)板(ban)(ban)(ban)是(shi)一塊帶踏步的斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)(zhi)承于(yu)上、下平臺梁上，底層(ceng)下端支(zhi)(zhi)承在地壟墻上。板(ban)(ban)(ban)式樓(lou)(lou)梯(ti)的優點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)下表(biao)面(mian)平整(zheng)，支(zhi)(zhi)模(mo)簡單;其(qi)缺(que)點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)較(jiao)(jiao)大(da)時，斜板(ban)(ban)(ban)厚度(du)較(jiao)(jiao)大(da)，結構材料用量較(jiao)(jiao)多。因此板(ban)(ban)(ban)式樓(lou)(lou)梯(ti)適用于(yu)可(ke)變荷載較(jiao)(jiao)小、梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)一般不大(da)于(yu)3m的情況。