按結構形(xing)式(shi)和受力特(te)點樓梯形(xing)式(shi)可(ke)分為板式(shi)、梁式(shi)、懸挑(tiao)(剪刀)式(shi)和螺旋式(shi)，前(qian)兩種屬(shu)于平面受力體系(xi)，后兩種則為空間(jian)受力體系(xi)。

板(ban)(ban)(ban)(ban)式樓梯(ti)是(shi)由(you)梯(ti)段板(ban)(ban)(ban)(ban)、平臺板(ban)(ban)(ban)(ban)和平臺梁(liang)組成(cheng)。梯(ti)段板(ban)(ban)(ban)(ban)是(shi)一(yi)塊帶踏步的斜板(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)支(zhi)承于(yu)上(shang)、下平臺梁(liang)上(shang)，底(di)層下端支(zhi)承在地(di)壟墻上(shang)。板(ban)(ban)(ban)(ban)式樓梯(ti)的優點(dian)是(shi)梯(ti)段板(ban)(ban)(ban)(ban)下表面平整，支(zhi)模簡單;其缺(que)點(dian)是(shi)梯(ti)段板(ban)(ban)(ban)(ban)跨度較(jiao)(jiao)(jiao)大(da)時，斜板(ban)(ban)(ban)(ban)厚(hou)度較(jiao)(jiao)(jiao)大(da)，結(jie)構材料用量較(jiao)(jiao)(jiao)多。因(yin)此板(ban)(ban)(ban)(ban)式樓梯(ti)適用于(yu)可變荷載較(jiao)(jiao)(jiao)小、梯(ti)段板(ban)(ban)(ban)(ban)跨度一(yi)般不大(da)于(yu)3m的情(qing)況。