梁的最大最小配筋率.doc

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1、配筋率一、不考虑地震的纵向受力筋的最小配筋率(ρmin)序号受力类型最小配筋率（%）1受压构件全部纵向钢筋0.62一侧纵向钢筋0.23受弯、偏拉、轴拉构件一侧受拉钢筋0.2和45ft/fy中的大者不考虑地震受弯、偏拉、轴拉构件一侧受拉钢筋最小配筋率（%）序号砼等级HPB235(Q235)HRB335HRB400RRB4001C150.2002C200.2360.2000.2003C250.2720.2000.2004C300.3060.2150.2005C350.3360.2360.2006C400.3660.2570.214

2、7C450.3860.2700.2258C500.4050.2840.2369C550.4200.2940.24510C600.4370.3060.25511C650.4480.3140.26112C700.4590.3210.26813C750.4670.3270.27314C800.4760.3330.278二、考虑地震的框架梁纵向受拉钢筋的最小配筋率(ρmin)框架梁纵向受拉钢筋的最小配筋率(ρmin)序号抗震等级梁中位置支座跨中1一级0.4和80ft/fy中的大者0.3和6545ft/fy中的大者2二级0.3和6545f

3、t/fy中的大者0.25和5545ft/fy中的大者3三、四级0.25和5545ft/fy中的大者0.2和4545ft/fy中的大者框架柱全部纵向钢筋的最小配筋百分率(ρmin)序号柱类型抗震等级一级二级三级四级1框架中柱、边柱1.00.80.70.62框架角柱、框支柱1.21.00.90.8钢筋混凝土柱全部纵向钢筋的最大配筋百分率(ρmin)序号结构类型ρmax1非抗震结构柱ρmax=(As+As`)/bh0=5%2抗震结构框架柱ρmax=(As+As`)/bh0=5%考虑地震框架梁纵向受拉钢筋的最小配筋率(ρmin)（fy=

4、300N/MM2和fy=360N/MM2）序号砼等级抗震等级一级二级三、四级梁中位置支座跨中支座跨中支座跨中1C200.3000.2500.2500.2000.3000.2500.2500.2002C250.3000.2500.2500.2000.3000.2500.2500.2003C300.4000.3100.3100.2620.2620.214(0.400)(0.300)(0.300)(0.250)(0.250)(0.200)4C350.4190.3400.3400.2620.2620.214(0.400)(0.300)(

5、0.300)(0.250)(0.250)(0.200)5C400.4560.3710.3710.3140.3140.2560.4000.3090.3090.2610.2610.2146C450.4800.3900.3900.3300.3300.2700.4000.3250.3250.2750.2750.2257C500.5040.4100.4100.3460.3460.2840.4200.3410.3410.2890.2890.2368C550.5230.4250.4250.3590.3590.2940.4360.3540.35

6、40.2990.2990.2459C600.5440.4420.4420.3740.3740.3060.4530.3680.3680.3120.3120.25511C650.5570.4530.4530.3830.3830.3140.4640.3770.3770.3190.3190.26112C700.5710.4640.4640.3920.3920.3210.4760.3860.3860.3270.3270.26813C750.5810.4720.4720.4000.4000.3270.4840.3940.3940.3330.

7、3330.27214C800.5920.4810.4810.4070.4070.3330.4930.4010.4010.3390.3390.278不考虑地震钢筋混凝土受弯构件最大配筋率（%）序号砼等级HPB235(Q235)HRB335HRB400RRB4001C152.1052C202.8071.7601.3803C253.4792.1821.7114C304.1812.6222.0565C354.8823.0622.4016C405.5843.5022.7467C456.1983.8873.0488C506.7534.23

8、53.3229C557.2054.5133.53710C607.6274.7713.73711C658.0185.0093.92112C708.3545.2124.07713C758.6365.3814.20714C808.9195.5494.335梁箍筋最小配