【梁、柱配筋計(jì)算過程案例】1500字

梁、柱配筋計(jì)算過程案例綜述混凝土強(qiáng)度采用：鋼筋取HRB400：1.1框架柱截面設(shè)計(jì)：根據(jù)截面最不利內(nèi)力組合：(1)(2)(3)(4)。取C軸底層柱作為計(jì)算單元，對(duì)框架柱進(jìn)行截面設(shè)計(jì)底層柱中，（1）C軸底層柱軸壓比驗(yàn)算：，故滿足要求。（2）截面尺寸復(fù)合：?。ā炷翉?qiáng)度影響系數(shù)，不大于C50的混凝土，一般取值1.0）故滿足要求。（3）框架柱正截面受彎承載力計(jì)算：1層，當(dāng)，構(gòu)件為大偏心受壓，由于軸力差值不是很大，選擇彎矩比較大的進(jìn)行下面的組合。①，因此不用考慮軸向壓力在撓曲桿件中產(chǎn)生的二階效應(yīng)。因?yàn)樨Q向受力鋼筋為HRB400，混凝土強(qiáng)度等級(jí)為C30，所以全部縱向鋼筋最小配筋率為，則②取小偏心組合時(shí)，，因此不用考慮軸向壓力在撓曲桿件中產(chǎn)生的二階效應(yīng)。選配的鋼筋316(As=As′=603mm2)（4）垂直于彎矩作用平面的受壓承載力計(jì)算：以C軸底層柱為研究對(duì)象，即，查鋼筋混凝土軸心受壓構(gòu)件的穩(wěn)定系數(shù)表可知，所以設(shè)計(jì)符合要求。（5）斜截面承載力計(jì)算：最不利組合取B軸底層柱，計(jì)算剪跨比：，所以，所以所以可不進(jìn)行斜截面受剪承載力計(jì)算，按構(gòu)造配筋，取箍筋為410@200裂縫寬度計(jì)算：，可不進(jìn)行裂縫驗(yàn)算。1.2框架梁配筋計(jì)算：（1）框架梁正截面設(shè)計(jì)：混凝土強(qiáng)度采用：鋼筋取HRB400：AB/BC/CD:表2.351層框架梁的正截面計(jì)算計(jì)算公式梁AB梁BC梁CD支座左截面跨中截面支座右截面支座左截面跨中截面支座右截面支座左截面跨中截面支座右截面-28.4024.51-28.71-32.095.16-11.42-38.2724.48-25.290.0130.0110.0130.0150.0020.0050.0180.0110.0120.0130.0110.0130.1190.0020.0050.0180.0110.012109.9993.07109.99126.9116.9242.30152.3093.07101.53選筋412412412412412412412412412實(shí)配面積4524524524524524524524524520.21%0.21%0.21%0.21%0.21%0.21%0.21%0.21%0.21%要求最小配筋率0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%表2.362層框架梁的正截面計(jì)算計(jì)算公式梁AB梁BC梁CD支座左截面跨中截面支座右截面支座左截面跨中截面支座右截面支座左截面跨中截面支座右截面-38.2919.92-30.27-17.381.43-26.29-39.9821.49-25.820.0170.0090.0140.0080.0010.0120.0180.0100.0120.0170.0090.0140.0080.0010.0120.0180.0100.012143.8376.15118.4567.698.46101.53152.3084.61101.53選筋412412412412412412412412412實(shí)配面積4524524524524524524524524520.21%0.21%0.21%0.21%0.21%0.21%0.21%0.21%0.21%要求最小配筋率0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%表2.373層框架梁的正截面計(jì)算計(jì)算公式梁AB梁BC梁CD支座左截面跨中截面支座右截面支座左截面跨中截面支座右截面支座左截面跨中截面支座右截面-39.3218.70-27.91-23.441.50-29.78-42.7389.62-26.690.0180.0090.0130.0110.0010.0140.0200.0410.0120.0180.0090.0130.0110.0010.0140.200.0420.012152.3076.15109.9993.078.46118.45169.22346.89101.53選筋412412412412412412412412412實(shí)配面積4524524524524524524524524520.21%0.21%0.21%0.21%0.21%0.21%0.21%0.21%0.21%要求最小配筋率0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%表2.384層框架梁的正截面計(jì)算計(jì)算公式梁AB梁BC梁CD支座左截面跨中截面支座右截面支座左截面跨中截面支座右截面支座左截面跨中截面支座右截面-39.1634.20-26.82-20.2111.66-1.90-46.9317.03-44.190.0180.0160.0120.0090.0050.0010.0220.0080.0200.0180.0160.0120.0090.0050.0010.0220.0080.020152.30135.37101.5376.1542.308.46186.1467.69169.22選筋412412412412412412412412412實(shí)配面積4524524524524524524524524520.21%0.21%0.21%0.21%0.21%0.21%0.21%0.21%0.21%要求最小配筋率0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%（2）框架梁AB斜截面設(shè)計(jì)：混凝土強(qiáng)度等級(jí)為C30：鋼筋HRB400：箍筋HPB300：AB梁尺寸：①1層：因此符合要求。檢驗(yàn)截面是否需要配筋：，查梁中箍筋最大間距表及梁中箍筋最小直徑可知，，箍筋直徑取，，∴箍筋取驗(yàn)算最小配筋率：，滿足要求。②2層：因此符合要求。檢驗(yàn)截面是否需要配筋：，查梁中箍筋最大間距表及梁中箍筋最小直徑可知，，箍筋直徑取，，∴箍筋取驗(yàn)算最小配筋率：，滿足要求。③3層：因此符合要求。檢驗(yàn)截面是否需要配筋：，查梁中箍筋最大間距表及梁中箍筋最小直徑可知，，箍筋直徑取，，∴箍筋取驗(yàn)算最小配筋率：，滿足