山西建筑
山西建築
산서건축
SHANXI ARCHITECTURE
2014年
26期
29-30
,共2页
陈铁虎%高欣欣%李洪海%李青狮%张小伟
陳鐵虎%高訢訢%李洪海%李青獅%張小偉
진철호%고흔흔%리홍해%리청사%장소위
预埋钢筋%拉拔%数值分析%内力分布%变形
預埋鋼觔%拉拔%數值分析%內力分佈%變形
예매강근%랍발%수치분석%내력분포%변형
embedded bar%drawing%numerical investigation%endogen force distribution%deformation
为研究锚筋和混凝土介质之间的粘结特性，利用有限元程序进行预埋钢筋混凝土梁拉拔数值模拟，得到了不同直径预埋钢筋混凝土结构内力与变形分布特征，计算表明，拉拔荷载作用下结构应力集中于混凝土梁端部，并由锚筋顶端向末端、由横截面中心向四周非线性降低，结构变形呈对称分布；特定埋深下，结构静力响应随着钢筋直径增大而减小，结构拉拔承载力增强。
為研究錨觔和混凝土介質之間的粘結特性，利用有限元程序進行預埋鋼觔混凝土樑拉拔數值模擬，得到瞭不同直徑預埋鋼觔混凝土結構內力與變形分佈特徵，計算錶明，拉拔荷載作用下結構應力集中于混凝土樑耑部，併由錨觔頂耑嚮末耑、由橫截麵中心嚮四週非線性降低，結構變形呈對稱分佈；特定埋深下，結構靜力響應隨著鋼觔直徑增大而減小，結構拉拔承載力增彊。
위연구묘근화혼응토개질지간적점결특성，이용유한원정서진행예매강근혼응토량랍발수치모의，득도료불동직경예매강근혼응토결구내력여변형분포특정，계산표명，랍발하재작용하결구응력집중우혼응토량단부，병유묘근정단향말단、유횡절면중심향사주비선성강저，결구변형정대칭분포；특정매심하，결구정력향응수착강근직경증대이감소，결구랍발승재력증강。
To investigate the bond characteristic between embedded bar and concrete,the numerical simulation of drawing performance of embed-ded reinforced concrete beam was conducted using finite element program. The endogen force and deformation distribution of the structure embed-ded with different diameter bars were obtained. The results show that the structure stress concentrates on the end of the concrete beam and de-crease nonlinearly from top end to bottom end of anchor bar and also decrease from the centre of cross-section to its boundary. The structure de-formation is symmetrical. Under certain constant embedded depth,the structure responses decrease with the diameter of the steel bar,whereas the drawing strength increases to some extent.
