按結構(gou)形(xing)式(shi)和受力(li)特點樓梯(ti)形(xing)式(shi)可分(fen)為(wei)板式(shi)、梁式(shi)、懸挑(剪刀)式(shi)和螺(luo)旋式(shi)，前兩種屬(shu)于平面受力(li)體(ti)系(xi)，后兩種則為(wei)空(kong)間受力(li)體(ti)系(xi)。

板(ban)(ban)式樓梯(ti)(ti)是(shi)由梯(ti)(ti)段板(ban)(ban)、平臺(tai)板(ban)(ban)和平臺(tai)梁組成。梯(ti)(ti)段板(ban)(ban)是(shi)一(yi)塊帶(dai)踏步的斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支(zhi)承于(yu)上(shang)、下(xia)(xia)平臺(tai)梁上(shang)，底層下(xia)(xia)端支(zhi)承在(zai)地(di)壟墻(qiang)上(shang)。板(ban)(ban)式樓梯(ti)(ti)的優(you)點是(shi)梯(ti)(ti)段板(ban)(ban)下(xia)(xia)表面平整(zheng)，支(zhi)模簡單;其缺點是(shi)梯(ti)(ti)段板(ban)(ban)跨度(du)較(jiao)(jiao)大時，斜(xie)板(ban)(ban)厚度(du)較(jiao)(jiao)大，結(jie)構材料用(yong)量較(jiao)(jiao)多(duo)。因此板(ban)(ban)式樓梯(ti)(ti)適用(yong)于(yu)可變(bian)荷載較(jiao)(jiao)小、梯(ti)(ti)段板(ban)(ban)跨度(du)一(yi)般(ban)不(bu)大于(yu)3m的情況(kuang)。