按結構(gou)形(xing)式(shi)和受力特點樓梯形(xing)式(shi)可分(fen)為板式(shi)、梁式(shi)、懸挑(剪(jian)刀)式(shi)和螺旋式(shi)，前兩(liang)種屬于(yu)平面受力體(ti)系(xi)，后兩(liang)種則為空間(jian)受力體(ti)系(xi)。

板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)是(shi)由梯(ti)(ti)段(duan)板(ban)(ban)(ban)、平臺板(ban)(ban)(ban)和平臺梁組成。梯(ti)(ti)段(duan)板(ban)(ban)(ban)是(shi)一(yi)塊帶踏步的(de)斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)(zhi)承于(yu)上、下平臺梁上，底層下端支(zhi)(zhi)承在(zai)地壟墻(qiang)上。板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)的(de)優(you)點是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)下表面平整，支(zhi)(zhi)模(mo)簡單;其缺點是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨度較大時(shi)，斜板(ban)(ban)(ban)厚(hou)度較大，結構材料用(yong)量較多。因(yin)此板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)適(shi)用(yong)于(yu)可(ke)變(bian)荷(he)載較小、梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨度一(yi)般不大于(yu)3m的(de)情(qing)況。