按(an)結(jie)構(gou)形式和受力特點樓梯(ti)形式可分為(wei)板式、梁式、懸挑(剪(jian)刀)式和螺旋式，前(qian)兩(liang)種屬于(yu)平面受力體系，后兩(liang)種則為(wei)空(kong)間受力體系。

板(ban)(ban)(ban)(ban)式樓梯(ti)是(shi)由梯(ti)段板(ban)(ban)(ban)(ban)、平(ping)臺(tai)板(ban)(ban)(ban)(ban)和平(ping)臺(tai)梁組成。梯(ti)段板(ban)(ban)(ban)(ban)是(shi)一(yi)塊帶踏步的(de)斜板(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)支承于上、下平(ping)臺(tai)梁上，底層下端支承在地壟墻上。板(ban)(ban)(ban)(ban)式樓梯(ti)的(de)優(you)點是(shi)梯(ti)段板(ban)(ban)(ban)(ban)下表面平(ping)整，支模(mo)簡單;其缺點是(shi)梯(ti)段板(ban)(ban)(ban)(ban)跨度較大時，斜板(ban)(ban)(ban)(ban)厚(hou)度較大，結構(gou)材(cai)料用量較多(duo)。因此板(ban)(ban)(ban)(ban)式樓梯(ti)適用于可變(bian)荷載較小(xiao)、梯(ti)段板(ban)(ban)(ban)(ban)跨度一(yi)般不(bu)大于3m的(de)情況。