按結(jie)構形式和(he)受(shou)力特(te)點樓梯形式可(ke)分為(wei)板式、梁式、懸挑(剪刀)式和(he)螺(luo)旋式，前(qian)兩(liang)種(zhong)屬(shu)于平面受(shou)力體(ti)系，后兩(liang)種(zhong)則為(wei)空(kong)間受(shou)力體(ti)系。

板(ban)(ban)(ban)式樓梯(ti)(ti)是(shi)由(you)梯(ti)(ti)段(duan)板(ban)(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)(ban)和(he)平(ping)(ping)臺(tai)梁組成(cheng)。梯(ti)(ti)段(duan)板(ban)(ban)(ban)是(shi)一(yi)(yi)塊(kuai)帶踏步的斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支承(cheng)于(yu)上(shang)、下(xia)平(ping)(ping)臺(tai)梁上(shang)，底(di)層(ceng)下(xia)端支承(cheng)在地(di)壟墻(qiang)上(shang)。板(ban)(ban)(ban)式樓梯(ti)(ti)的優(you)點(dian)是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)下(xia)表面平(ping)(ping)整，支模簡單(dan);其缺(que)點(dian)是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨(kua)度較大時，斜板(ban)(ban)(ban)厚度較大，結構材料用量(liang)較多。因此板(ban)(ban)(ban)式樓梯(ti)(ti)適用于(yu)可(ke)變荷載(zai)較小、梯(ti)(ti)段(duan)板(ban)(ban)(ban)跨(kua)度一(yi)(yi)般不大于(yu)3m的情況。