按結構形(xing)式(shi)和受力特點樓梯形(xing)式(shi)可分(fen)為(wei)(wei)板式(shi)、梁式(shi)、懸(xuan)挑(剪刀)式(shi)和螺旋(xuan)式(shi)，前(qian)兩種(zhong)屬于平(ping)面受力體系，后兩種(zhong)則為(wei)(wei)空間受力體系。

板(ban)(ban)(ban)(ban)(ban)式(shi)(shi)樓梯(ti)是(shi)(shi)由(you)梯(ti)段(duan)板(ban)(ban)(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)(ban)(ban)和平臺(tai)梁組成。梯(ti)段(duan)板(ban)(ban)(ban)(ban)(ban)是(shi)(shi)一塊帶(dai)踏步的(de)斜板(ban)(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)(ban)支(zhi)承于上(shang)、下平臺(tai)梁上(shang)，底層下端支(zhi)承在地壟墻上(shang)。板(ban)(ban)(ban)(ban)(ban)式(shi)(shi)樓梯(ti)的(de)優點(dian)是(shi)(shi)梯(ti)段(duan)板(ban)(ban)(ban)(ban)(ban)下表面平整，支(zhi)模簡單(dan);其缺點(dian)是(shi)(shi)梯(ti)段(duan)板(ban)(ban)(ban)(ban)(ban)跨(kua)(kua)度較(jiao)大(da)時，斜板(ban)(ban)(ban)(ban)(ban)厚度較(jiao)大(da)，結構(gou)材料用(yong)量較(jiao)多。因此板(ban)(ban)(ban)(ban)(ban)式(shi)(shi)樓梯(ti)適用(yong)于可(ke)變荷載較(jiao)小、梯(ti)段(duan)板(ban)(ban)(ban)(ban)(ban)跨(kua)(kua)度一般不大(da)于3m的(de)情況。