2a矩形截面偏心受压构件承载力计算资料.xls

矩矩形形截截面面偏偏心心受受压压构构件件强强度度复复核核 第第 1 1 页页 2024/7/142024/7/14 矩形截面偏心受压构件正截面抗压承载力计算按公路钢筋混凝土及预应力混凝土桥涵设计规范（JTGD622004）第5.3.5条计算，本表不考虑预应力钢筋，考虑偏心受压构件轴向力偏心距增大系数，自动区分大、小偏心受压。例题12-1例题12-2例题12-3轴轴力力N0kN-284-5000-750-8680弯弯矩矩M0kN-m21310003156780桥桥梁梁结结构构重重要要性性系系数数01111自自由由长长度度l0cm6001004501000截截面面宽宽度度bcm306030140截截面面高高度度hcm6012060140混混凝凝土土强强度度等等级级25202540受受拉拉钢钢筋筋类类型型(0=R235;1=HRB335；-1=HRB400或或KL400)HRB335HRB335HRB335HRB335受受拉拉钢钢筋筋直直径径dmm18222428受受拉拉钢钢筋筋根根数数根根54415受受拉拉钢钢筋筋保保护护层层acm4447.5受受压压钢钢筋筋类类型型(0=R235;1=HRB335；-1=HRB400或或KL400)HRB335HRB335HRB335HRB335受受压压钢钢筋筋直直径径dmm16221828受受压压钢钢筋筋根根数数根根35315受受压压钢钢筋筋保保护护层层acm4447.5混凝土抗压强度设计值fcdMPa11.509.2011.5018.40受拉钢筋弹性模量EsMPa2.00E+052.00E+052.00E+052.00E+05受拉钢筋设计强度fsdMPa280280280280受拉钢筋面积Ascm212.7215.2118.1092.36受压钢筋弹性模量EsMPa2.00E+052.00E+052.00E+052.00E+05受压钢筋设计强度fsdMPa280280280280受压钢筋面积Ascm26.0319.017.6392.36截面配筋率1.042%0.475%1.429%0.942%初始偏心距e0cm75.0020.0042.0078.11偏心距增大系数1.0531.0001.0541.062增大后的偏心距e0cm79.0020.0044.2582.94纵向力至受拉钢筋偏心距ecm105.0076.0070.25145.44纵向力至受压钢筋偏心距ecm53.0036.0018.2520.44中性轴位置xcm14.6489.0930.9238.80受压区高度界限bh0cm31.3664.9631.3674.20判判别别受受力力性性质质大大偏偏心心小小偏偏心心大大偏偏心心大大偏偏心心设设计计轴轴力力0N0kN-284-5000-750-8680设设计计弯弯矩矩0M0kN-m21310003156780截截面面承承载载轴轴力力NjkN-318-5408-774-9996截截面面承承载载弯弯矩矩MjkN-m23810823257808校校核核OKOKOKOK