按(an)結構(gou)形式和受力特點樓梯形式可(ke)分為板式、梁(liang)式、懸挑(tiao)(剪刀)式和螺(luo)旋式，前兩種屬于(yu)平面受力體(ti)系，后(hou)兩種則為空(kong)間受力體(ti)系。

板(ban)(ban)(ban)式樓(lou)梯(ti)是由梯(ti)段(duan)板(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)和平臺(tai)梁組成。梯(ti)段(duan)板(ban)(ban)(ban)是一(yi)塊帶踏步的斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)承于(yu)(yu)上(shang)(shang)、下平臺(tai)梁上(shang)(shang)，底層下端支(zhi)承在地(di)壟(long)墻上(shang)(shang)。板(ban)(ban)(ban)式樓(lou)梯(ti)的優點是梯(ti)段(duan)板(ban)(ban)(ban)下表面平整(zheng)，支(zhi)模(mo)簡單;其缺點是梯(ti)段(duan)板(ban)(ban)(ban)跨(kua)度(du)較大(da)時，斜板(ban)(ban)(ban)厚度(du)較大(da)，結構材料用量(liang)較多。因(yin)此(ci)板(ban)(ban)(ban)式樓(lou)梯(ti)適用于(yu)(yu)可變荷載較小、梯(ti)段(duan)板(ban)(ban)(ban)跨(kua)度(du)一(yi)般不大(da)于(yu)(yu)3m的情況。