按結構形(xing)式和受(shou)(shou)力(li)特點樓梯形(xing)式可(ke)分為(wei)(wei)板式、梁式、懸挑(剪(jian)刀)式和螺旋式，前(qian)兩種(zhong)屬于平面受(shou)(shou)力(li)體系，后兩種(zhong)則為(wei)(wei)空間受(shou)(shou)力(li)體系。

板(ban)(ban)(ban)(ban)式(shi)樓(lou)梯(ti)是由(you)梯(ti)段(duan)板(ban)(ban)(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)(ban)(ban)和平(ping)(ping)臺(tai)梁組成(cheng)。梯(ti)段(duan)板(ban)(ban)(ban)(ban)是一(yi)塊帶踏步的(de)(de)(de)斜(xie)板(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)支承于上(shang)、下(xia)平(ping)(ping)臺(tai)梁上(shang)，底層下(xia)端支承在地壟墻上(shang)。板(ban)(ban)(ban)(ban)式(shi)樓(lou)梯(ti)的(de)(de)(de)優點是梯(ti)段(duan)板(ban)(ban)(ban)(ban)下(xia)表面平(ping)(ping)整，支模(mo)簡單;其(qi)缺點是梯(ti)段(duan)板(ban)(ban)(ban)(ban)跨(kua)度較大(da)時，斜(xie)板(ban)(ban)(ban)(ban)厚度較大(da)，結(jie)構(gou)材料(liao)用量較多(duo)。因此板(ban)(ban)(ban)(ban)式(shi)樓(lou)梯(ti)適用于可變荷載較小、梯(ti)段(duan)板(ban)(ban)(ban)(ban)跨(kua)度一(yi)般不大(da)于3m的(de)(de)(de)情(qing)況。

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