
剪力墙分布筋体积配箍率的计算公式如:
、可从下表中查到。
例:300厚剪力墙,水平分布筋φ12@200,拉筋φ8@400双向,求分布筋的体积配箍率。
解:查表:
| 表1a 剪力墙约束边缘构件配箍特征值时的最小体积配箍率(%) | |||||||||||||
| 混凝土强度等级(fc) | |||||||||||||
| C20 (9.6) | C25 (11.9) | C30 (14.3) | C35 (16.7) | C40 (19.1) | C45 (21.1) | C50 (23.1) | C55 (25.3) | C60 (27.5) | C65 (29.7) | C70 (31.8) | C75 (33.8) | C80 (35.9) | |
| 210. | 0.91 | 1.13 | 1.36 | 1.59 | 1.82 | 2.01 | 2.20 | 2.41 | 2.62 | 2.83 | 3.03 | 3.22 | 3.42 |
| 300. | 0. | 0.79 | 0.95 | 1.11 | 1.27 | 1.41 | 1.54 | 1.69 | 1.83 | 1.98 | 2.12 | 2.25 | 2.39 |
| 360. | 0.53 | 0.66 | 0.79 | 0.93 | 1.06 | 1.17 | 1.28 | 1.41 | 1.53 | 1.65 | 1.77 | 1.88 | 1.99 |
| 表1b 剪力墙约束边缘构件配箍特征值时的最小体积配箍率(%) | |||||||||||||
| 混凝土强度等级 | |||||||||||||
| C20 | C25 | C30 | C35 | C40 | C45 | C50 | C55 | C60 | C65 | C70 | C75 | C80 | |
| 210. | 0.46 | 0.57 | 0.68 | 0.80 | 0.91 | 1.00 | 1.10 | 1.20 | 1.31 | 1.41 | 1.51 | 1.61 | 1.71 |
| 300. | 0.32 | 0.40 | 0.48 | 0.56 | 0. | 0.70 | 0.77 | 0.84 | 0.92 | 0.99 | 1.06 | 1.13 | 1.20 |
| 360. | 0.27 | 0.33 | 0.40 | 0.46 | 0.53 | 0.59 | 0. | 0.70 | 0.76 | 0.83 | 0.88 | 0.94 | 1.00 |
| 表2 剪力墙拉筋体积配箍率(%) | |||||||
| 钢筋直径及间距 | 制表公式: | ||||||
| 墙厚 h | 6 @100X100 | 8 @100X100 | 10 @100X100 | 12 @100X100 | 14 @100X100 | 16 @100X100 | |
| 200 | 0.30 | 0.53 | 0.83 | 1.20 | 1. | 2.14 | |
| 250 | 0.30 | 0.53 | 0.82 | 1.18 | 1.61 | 2.11 | |
| 300 | 0.29 | 0.52 | 0.82 | 1.17 | 1.60 | 2.09 | |
| 350 | 0.29 | 0.52 | 0.81 | 1.17 | 1.59 | 2.08 | |
| 400 | 0.29 | 0.52 | 0.81 | 1.16 | 1.58 | 2.07 | |
| 450 | 0.29 | 0.51 | 0.80 | 1.16 | 1.58 | 2.06 | |
| 500 | 0.29 | 0.51 | 0.80 | 1.16 | 1.57 | 2.05 | |
| 表3 剪力墙对称配置的分布筋体积配箍率(%) | ||||||||||||||||||||
| 墙厚 h | 钢筋直径及间距 | |||||||||||||||||||
| 8@100 | 8@125 | 8@150 | 8@200 | 10@100 | 10@125 | 10@150 | 10@200 | 12@100 | 12@125 | 12@150 | 12@200 | 14@100 | 14@125 | 14@150 | 14@200 | 16@100 | 16@125 | 16@150 | 16@200 | |
| 200 | 0.628 | 0.503 | 0.419 | 0.314 | 0.982 | 0.785 | 0.655 | 0.491 | 1.414 | 1.131 | 0.942 | 0.707 | 1.924 | 1.539 | 1.283 | 0.962 | 2.513 | 2.011 | 1.676 | 1.257 |
| 250 | 0.479 | 0.383 | 0.319 | 0.239 | 0.748 | 0.598 | 0.499 | 0.374 | 1.077 | 0.862 | 0.718 | 0.539 | 1.466 | 1.173 | 0.977 | 0.733 | 1.915 | 1.532 | 1.277 | 0.957 |
| 300 | 0.387 | 0.309 | 0.258 | 0.193 | 0.604 | 0.483 | 0.403 | 0.302 | 0.870 | 0.696 | 0.580 | 0.435 | 1.184 | 0.947 | 0.7 | 0.592 | 1.547 | 1.237 | 1.031 | 0.773 |
| 350 | 0.324 | 0.259 | 0.216 | 0.162 | 0.507 | 0.405 | 0.338 | 0.253 | 0.730 | 0.584 | 0.486 | 0.365 | 0.993 | 0.795 | 0.662 | 0.497 | 1.297 | 1.038 | 0.865 | 0.9 |
| 400 | 0.279 | 0.223 | 0.186 | 0.140 | 0.436 | 0.349 | 0.291 | 0.218 | 0.628 | 0.503 | 0.419 | 0.314 | 0.855 | 0.684 | 0.570 | 0.428 | 1.117 | 0.4 | 0.745 | 0.559 |
| 450 | 0.245 | 0.196 | 0.163 | 0.123 | 0.383 | 0.306 | 0.255 | 0.192 | 0.552 | 0.441 | 0.368 | 0.276 | 0.751 | 0.601 | 0.501 | 0.375 | 0.981 | 0.785 | 0.654 | 0.490 |
| 500 | 0.219 | 0.175 | 0.146 | 0.109 | 0.341 | 0.273 | 0.228 | 0.171 | 0.492 | 0.393 | 0.328 | 0.246 | 0.669 | 0.535 | 0.446 | 0.335 | 0.874 | 0.699 | 0.583 | 0.437 |
| 制表公式:,为钢筋间距。 | ||||||||||||||||||||
| 表4 剪力墙对称配置分布筋配筋率(%) | ||||||||||||||||||||
| 墙厚 h | 钢筋直径及间距 | |||||||||||||||||||
| 8@100 | 8@125 | 8@150 | 8@200 | 10@100 | 10@125 | 10@150 | 10@200 | 12@100 | 12@125 | 12@150 | 12@200 | 14@100 | 14@125 | 14@150 | 14@200 | 16@100 | 16@125 | 16@150 | 16@200 | |
| 200 | 0.503 | 0.402 | 0.335 | 0.251 | 0.785 | 0.628 | 0.524 | 0.393 | 1.131 | 0.905 | 0.754 | 0.565 | 1.539 | 1.232 | 1.026 | 0.770 | 2.011 | 1.608 | 1.340 | 1.005 |
| 250 | 0.402 | 0.322 | 0.268 | 0.201 | 0.628 | 0.503 | 0.419 | 0.314 | 0.905 | 0.724 | 0.603 | 0.452 | 1.232 | 0.985 | 0.821 | 0.616 | 1.608 | 1.287 | 1.072 | 0.804 |
| 300 | 0.335 | 0.268 | 0.223 | 0.168 | 0.524 | 0.419 | 0.349 | 0.262 | 0.754 | 0.603 | 0.503 | 0.377 | 1.026 | 0.821 | 0.684 | 0.513 | 1.340 | 1.072 | 0.4 | 0.670 |
| 350 | 0.287 | 0.230 | 0.191 | 0.144 | 0.449 | 0.359 | 0.299 | 0.224 | 0.6 | 0.517 | 0.431 | 0.323 | 0.880 | 0.704 | 0.586 | 0.440 | 1.149 | 0.919 | 0.766 | 0.574 |
| 400 | 0.251 | 0.201 | 0.168 | 0.126 | 0.393 | 0.314 | 0.262 | 0.196 | 0.565 | 0.452 | 0.377 | 0.283 | 0.770 | 0.616 | 0.513 | 0.385 | 1.005 | 0.804 | 0.670 | 0.503 |
| 450 | 0.223 | 0.179 | 0.149 | 0.112 | 0.349 | 0.279 | 0.233 | 0.175 | 0.503 | 0.402 | 0.335 | 0.251 | 0.684 | 0.547 | 0.456 | 0.342 | 0.4 | 0.715 | 0.596 | 0.447 |
| 500 | 0.201 | 0.161 | 0.134 | 0.101 | 0.314 | 0.251 | 0.209 | 0.157 | 0.452 | 0.362 | 0.302 | 0.226 | 0.616 | 0.493 | 0.411 | 0.308 | 0.804 | 0.3 | 0.536 | 0.402 |
| 制表公式:,为钢筋间距。 | ||||||||||||||||||||
| 表5 板钢筋配筋率(%) | ||||||||||||||||||||||||
| 墙厚 h | 钢筋直径及间距 | |||||||||||||||||||||||
| 6@100 | 6@125 | 6@150 | 6@200 | 8@100 | 8@125 | 8@150 | 8@200 | 10@100 | 10@125 | 10@150 | 10@200 | 12@100 | 12@125 | 12@150 | 12@200 | 14@100 | 14@125 | 14@150 | 14@200 | 16@100 | 16@125 | 16@150 | 16@200 | |
| 60 | 0.471 | 0.377 | 0.314 | 0.236 | 0.838 | 0.670 | 0.559 | 0.419 | 1.309 | 1.047 | 0.873 | 0.655 | 1.885 | 1.508 | 1.257 | 0.942 | 2.566 | 2.053 | 1.710 | 1.283 | 3.351 | 2.681 | 2.234 | 1.676 |
| 80 | 0.353 | 0.283 | 0.236 | 0.177 | 0.628 | 0.503 | 0.419 | 0.314 | 0.982 | 0.785 | 0.655 | 0.491 | 1.414 | 1.131 | 0.942 | 0.707 | 1.924 | 1.539 | 1.283 | 0.962 | 2.513 | 2.011 | 1.676 | 1.257 |
| 100 | 0.283 | 0.226 | 0.188 | 0.141 | 0.503 | 0.402 | 0.335 | 0.251 | 0.785 | 0.628 | 0.524 | 0.393 | 1.131 | 0.905 | 0.754 | 0.565 | 1.539 | 1.232 | 1.026 | 0.770 | 2.011 | 1.608 | 1.340 | 1.005 |
| 120 | 0.236 | 0.188 | 0.157 | 0.118 | 0.419 | 0.335 | 0.279 | 0.209 | 0.655 | 0.524 | 0.436 | 0.327 | 0.942 | 0.754 | 0.628 | 0.471 | 1.283 | 1.026 | 0.855 | 0.1 | 1.676 | 1.340 | 1.117 | 0.838 |
| 140 | 0.202 | 0.162 | 0.135 | 0.101 | 0.359 | 0.287 | 0.239 | 0.180 | 0.561 | 0.449 | 0.374 | 0.280 | 0.808 | 0.6 | 0.539 | 0.404 | 1.100 | 0.880 | 0.733 | 0.550 | 1.436 | 1.149 | 0.957 | 0.718 |
| 160 | 0.177 | 0.141 | 0.118 | 0.088 | 0.314 | 0.251 | 0.209 | 0.157 | 0.491 | 0.393 | 0.327 | 0.245 | 0.707 | 0.565 | 0.471 | 0.353 | 0.962 | 0.770 | 0.1 | 0.481 | 1.257 | 1.005 | 0.838 | 0.628 |
| 180 | 0.157 | 0.126 | 0.105 | 0.079 | 0.279 | 0.223 | 0.186 | 0.140 | 0.436 | 0.349 | 0.291 | 0.218 | 0.628 | 0.503 | 0.419 | 0.314 | 0.855 | 0.684 | 0.570 | 0.428 | 1.117 | 0.4 | 0.745 | 0.559 |
| 200 | 0.141 | 0.113 | 0.094 | 0.071 | 0.251 | 0.201 | 0.168 | 0.126 | 0.393 | 0.314 | 0.262 | 0.196 | 0.565 | 0.452 | 0.377 | 0.283 | 0.770 | 0.616 | 0.513 | 0.385 | 1.005 | 0.804 | 0.670 | 0.503 |
| 250 | 0.113 | 0.090 | 0.075 | 0.057 | 0.201 | 0.161 | 0.134 | 0.101 | 0.314 | 0.251 | 0.209 | 0.157 | 0.452 | 0.362 | 0.302 | 0.226 | 0.616 | 0.493 | 0.411 | 0.308 | 0.804 | 0.3 | 0.536 | 0.402 |
| 300 | 0.094 | 0.075 | 0.063 | 0.047 | 0.168 | 0.134 | 0.112 | 0.084 | 0.262 | 0.209 | 0.175 | 0.131 | 0.377 | 0.302 | 0.251 | 0.188 | 0.513 | 0.411 | 0.342 | 0.257 | 0.670 | 0.536 | 0.447 | 0.335 |
| 350 | 0.081 | 0.065 | 0.054 | 0.040 | 0.144 | 0.115 | 0.096 | 0.072 | 0.224 | 0.180 | 0.150 | 0.112 | 0.323 | 0.259 | 0.215 | 0.162 | 0.440 | 0.352 | 0.293 | 0.220 | 0.574 | 0.460 | 0.383 | 0.287 |
| 400 | 0.071 | 0.057 | 0.047 | 0.035 | 0.126 | 0.101 | 0.084 | 0.063 | 0.196 | 0.157 | 0.131 | 0.098 | 0.283 | 0.226 | 0.188 | 0.141 | 0.385 | 0.308 | 0.257 | 0.192 | 0.503 | 0.402 | 0.335 | 0.251 |
| 450 | 0.063 | 0.050 | 0.042 | 0.031 | 0.112 | 0.0 | 0.074 | 0.056 | 0.175 | 0.140 | 0.116 | 0.087 | 0.251 | 0.201 | 0.168 | 0.126 | 0.342 | 0.274 | 0.228 | 0.171 | 0.447 | 0.357 | 0.298 | 0.223 |
| 500 | 0.057 | 0.045 | 0.038 | 0.028 | 0.101 | 0.080 | 0.067 | 0.050 | 0.157 | 0.126 | 0.105 | 0.079 | 0.226 | 0.181 | 0.151 | 0.113 | 0.308 | 0.246 | 0.205 | 0.154 | 0.402 | 0.322 | 0.268 | 0.201 |
| 制表公式:,为钢筋间距。 | ||||||||||||||||||||||||
| 表6 受弯构件、偏心受拉构件、轴心受拉构件一侧的受拉钢筋的最小配筋百分率(0.2和45ft/fy中的较大值)(%) | |||||||||||||||
| 砼强度等级 | C15 | C20 | C25 | C30 | C35 | C40 | C45 | C50 | C55 | C60 | C65 | C70 | C75 | C80 | |
钢 筋 | HPB235( ) | 0.20 | 0.24 | 0.27 | 0.31 | 0.34 | 0.37 | 0.39 | 0.41 | 0.42 | 0.44 | 0.45 | 0.46 | 0.47 | 0.48 |
| HRB335( ) | 0.14 0.20 | 0.17 0.20 | 0.19 0.20 | 0.21 | 0.24 | 0.26 | 0.27 | 0.28 | 0.29 | 0.31 | 0.31 | 0.32 | 0.33 | 0.33 | |
| HRB400( ) | 0.11 0.20 | 0.14 0.20 | 0.16 0.20 | 0.18 0.20 | 0.20 | 0.21 | 0.22 | 0.24 | 0.25 | 0.25 | 0.26 | 0.27 | 0.27 | 0.28 | |
