地下道路工程计算书.docx
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地下道路工程计算书.docx
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地下道路工程计算书
----------------------------------------------------------------------
验算项目:
1-1剖面(按照135#孔验算)
----------------------------------------------------------------------
[验算简图]
----------------------------------------------------------------------
[验算条件]
----------------------------------------------------------------------
[基本参数]
所依据的规程或方法:
《建筑基坑支护技术规程》JGJ120-2012
基坑深度:
12.600(m)
基坑内地下水深度:
13.600(m)
基坑外地下水深度:
13.600(m)
支护结构重要性系数:
1.000
土钉荷载分项系数:
1.250
土钉抗拔安全系数:
1.600
整体滑动稳定安全系数:
1.300
土钉墙底面支锚轴向拉力经验系数ηb:
0.600
[坡线参数]
坡线段数3
序号水平投影(m)竖向投影(m)倾角(°)
15.6005.60045.0
22.0000.0000.0
34.9007.00055.0
[土层参数]
土层层数8
层号土类名称层厚重度浮重度粘聚力内摩擦角与锚固体摩阻力与土钉摩阻力水土
(m)(kN/m^3)(kN/m^3)(kPa)(度)(kPa)(kPa)
1粉土1.90017.3---13.023.055.050.0---
2粉土1.70017.7---13.025.048.048.0---
3粘性土2.20017.4---17.012.045.040.0---
4粉土2.50018.2---16.026.051.046.0---
5粘性土1.50018.0---17.014.058.043.0---
6粉土1.50018.6---16.027.060.055.0---
7粘性土4.00018.28.216.014.030.025.0合算
8粉砂3.60018.58.54.029.065.060.0分算
[超载参数]
超载数1
序号超载类型超载值(kN/m)作用深度(m)作用宽度(m)距坑边线距离(m)形式长度(m)
1满布均布15.000
[土钉参数]
土钉道数8
序号水平间距(m)垂直间距(m)入射角度(度)钻孔直径(mm)长度(m)配筋
11.5001.50015.01006.0001E18
21.5001.50015.01008.0001E18
31.5001.50015.01006.0001E18
41.5001.50015.01006.0001E18
51.5002.00015.01006.0001E18
61.5001.20015.01008.0001E18
71.2001.20020.01009.0001E18
81.2001.20020.01008.0001E18
钢筋类型对应关系:
d-HPB300,D-HRB335,E-HRB400,F-RRB400,G-HRB500,P-HRBF335,Q-HRBF400,R-HRBF500
[花管参数]
基坑内侧花管排数0
基坑外侧花管排数0
[锚杆参数]
锚杆道数0
[坑内土不加固]
*******************************************************************
[验算结果]
*******************************************************************
[抗拔承载力验算结果]
工况开挖深度破裂角支锚号支锚长度受拉荷载标准值抗拔承载力标准值抗拉承载力标准值安全系数
(m)(度)(m)Nkj(kN)Rkj(kN)Rkj(kN)抗拔抗拉
12.00039.10
23.50039.51土钉6.0009.478.8101.88.41710.870
35.00037.81土钉6.0001.766.6101.839.15759.884
2土钉8.00039.392.7101.82.3592.590
46.50037.61土钉6.0001.755.7101.832.28258.957
2土钉8.00011.882.0101.86.9448.616
3土钉6.00043.775.7101.81.7312.328
58.50033.11土钉6.0001.753.0101.831.86361.145
2土钉8.00011.482.8101.87.2658.936
3土钉6.00032.369.1101.82.1383.150
4土钉6.00038.486.7101.82.2602.653
69.70032.71土钉6.0001.743.8101.825.53859.355
2土钉8.00011.773.9101.86.2958.674
3土钉6.00033.362.0101.81.8633.058
4土钉6.00038.582.8101.82.1522.646
5土钉6.0002.772.1101.827.00638.123
710.90033.01土钉6.0001.738.1101.822.67960.575
2土钉8.00011.568.5101.85.9588.852
3土钉6.00032.656.8101.81.7433.121
4土钉6.00037.776.6101.82.0332.700
5土钉6.0000.065.5101.8999.000999.000
6土钉8.0006.3120.4101.818.99416.060
812.10032.81土钉6.0001.730.1101.817.77260.055
2土钉8.00011.661.9101.85.3418.776
3土钉6.00032.958.4101.81.7753.094
4土钉6.00038.069.3101.81.8222.677
5土钉6.0000.058.8101.8999.000999.000
6土钉8.0003.0113.8101.838.47434.427
7土钉9.00012.484.5101.86.7908.178
912.60032.71土钉6.0001.726.2101.815.33659.532
2土钉8.00011.758.8101.85.0248.700
3土钉6.00033.257.3101.81.7253.067
4土钉6.00038.465.8101.81.7172.654
5土钉6.0008.055.8101.86.97512.725
6土钉8.0003.0110.8101.836.89633.895
7土钉9.0003.181.1101.825.85332.446
8土钉8.00014.959.9101.84.0166.828
[整体稳定验算结果]
工况号安全系数圆心坐标x(m)圆心坐标y(m)半径(m)
11.86610.93614.0963.500
22.0039.41613.8604.802
31.5908.79913.9416.344
41.3816.27516.33510.371
51.4757.64913.6158.016
61.3294.20515.97013.135
71.3730.97018.47616.791
81.3532.62115.51215.161
91.3012.54514.33414.558
[喷射混凝土面层计算]
[计算参数]
厚度:
80(mm)
混凝土强度等级:
C20
配筋计算as:
20(mm)
水平配筋:
d8@200
竖向配筋:
d8@200
配筋计算as:
20
荷载分项系数:
1.250
[计算结果]
编号深度范围荷载值(kPa)轴向M(kN.m)As(mm^2)实配As(mm^2)
10.00~1.500.0x0.002160.0(构造)251.3
y0.002160.0(构造)251.3
21.50~3.007.0x0.579160.0(构造)251.3
y0.579160.0(构造)251.3
33.00~4.5028.0x2.319160.0(构造)251.3
y2.319160.0(构造)251.3
44.506.0049.1x2.063167.6251.3
y2.063167.6251.3
56.00~8.0019.0x2.643169.9251.3
y1.358160.0(构造)251.3
68.00~9.202.3x0.109160.0(构造)251.3
y0.183160.0(构造)251.3
79.20~10.4010.9x0.575160.0(构造)251.3
y0.575160.0(构造)251.3
810.40~11.6022.2x1.174160.0(构造)251.3
y1.174160.0(构造)251.3
911.60~12.6051.2x1.759160.0(构造)251.3
y2.685172.8251.3
[抗隆起验算]
1)从支护底部开始,逐层验算抗隆起稳定性,结果如下:
支护底部,验算抗隆起:
Ks=1.901≥1.600,抗隆起稳定性满足。
深度15.300处,验算抗隆起:
Ks=4.573≥1.600,抗隆起稳定性满足。
----------------------------------------------------------------------
验算项目:
1-1剖面(按照343#孔验算)
----------------------------------------------------------------------
[验算简图]
----------------------------------------------------------------------
[验算条件]
----------------------------------------------------------------------
[基本参数]
所依据的规程或方法:
《建筑基坑支护技术规程》JGJ120-2012
基坑深度:
12.600(m)
基坑内地下水深度:
13.600(m)
基坑外地下水深度:
13.600(m)
支护结构重要性系数:
1.000
土钉荷载分项系数:
1.250
土钉抗拔安全系数:
1.600
整体滑动稳定安全系数:
1.300
土钉墙底面支锚轴向拉力经验系数ηb:
0.800
[坡线参数]
坡线段数3
序号水平投影(m)竖向投影(m)倾角(°)
15.6005.60045.0
22.0000.0000.0
34.9007.00055.0
[土层参数]
土层层数8
层号土类名称层厚重度浮重度粘聚力内摩擦角与锚固体摩阻力与土钉摩阻力水土
(m)(kN/m^3)(kN/m^3)(kPa)(度)(kPa)(kPa)
1粉土2.50017.3---13.023.055.050.0---
2粉土1.60017.7---13.025.048.048.0---
3粘性土1.90017.4---17.012.045.040.0---
4粉土3.00018.2---16.026.051.046.0---
5粘性土1.00018.0---17.014.058.043.0---
6粉土1.00018.6---16.027.060.055.0---
7粘性土2.30018.2---16.014.030.025.0---
8粉土5.60018.58.518.025.058.053.0合算
[超载参数]
超载数1
序号超载类型超载值(kN/m)作用深度(m)作用宽度(m)距坑边线距离(m)形式长度(m)
1满布均布15.000
[土钉参数]
土钉道数8
序号水平间距(m)垂直间距(m)入射角度(度)钻孔直径(mm)长度(m)配筋
11.5001.50015.01006.0001E18
21.5001.50015.01008.0001E18
31.5001.50015.01006.0001E18
41.5001.50015.01006.0001E18
51.5002.00015.01006.0001E18
61.5001.20015.01008.0001E18
71.2001.20020.01009.0001E18
81.2001.20020.01008.0001E18
钢筋类型对应关系:
d-HPB300,D-HRB335,E-HRB400,F-RRB400,G-HRB500,P-HRBF335,Q-HRBF400,R-HRBF500
[花管参数]
基坑内侧花管排数0
基坑外侧花管排数0
[锚杆参数]
锚杆道数0
[坑内土不加固]
*******************************************************************
[验算结果]
*******************************************************************
[抗拔承载力验算结果]
工况开挖深度破裂角支锚号支锚长度受拉荷载标准值抗拔承载力标准值抗拉承载力标准值安全系数
(m)(度)(m)Nkj(kN)Rkj(kN)Rkj(kN)抗拔抗拉
12.00039.00
23.50039.31土钉6.0009.980.1101.88.08410.272
35.00038.31土钉6.0001.968.9101.836.42153.806
2土钉8.00035.198.0101.82.7952.901
46.50037.81土钉6.0002.057.2101.829.08451.761
2土钉8.00011.387.2101.87.7209.010
3土钉6.00043.874.4101.81.6992.324
58.50033.41土钉6.0001.955.1101.829.28854.066
2土钉8.00010.888.6101.88.1879.411
3土钉6.00029.468.2101.82.3253.468
4土钉6.00040.686.7101.82.1332.504
69.70033.21土钉6.0001.947.1101.824.72753.427
2土钉8.00010.981.0101.87.3999.300
3土钉6.00029.762.0101.82.0893.427
4土钉6.00040.184.1101.82.0962.538
5土钉6.0002.275.2101.834.67146.936
710.90033.41土钉6.0001.940.5101.821.46353.892
2土钉8.00010.974.6101.86.8739.380
3土钉6.00029.456.6101.81.9233.457
4土钉6.00039.877.7101.81.9552.560
5土钉6.0000.068.7101.8999.000999.000
6土钉8.0006.4108.0101.816.97216.003
812.10033.01土钉6.0001.931.3101.816.18452.702
2土钉8.00011.165.9101.85.9389.173
3土钉6.00030.149.6101.81.6473.380
4土钉6.00040.769.9101.81.7202.504
5土钉6.0000.061.3101.8999.000999.000
6土钉8.0002.6101.3101.839.33039.534
7土钉9.00014.081.0101.85.7897.274
912.60032.91土钉6.0001.927.4101.814.03852.212
2土钉8.00011.262.1101.85.5469.088
3土钉6.00030.456.6101.81.8623.349
4土钉6.00041.066.5101.81.6212.480
5土钉6.0000.058.1101.8999.000999.000
6土钉8.0002.698.3101.837.56538.878
7土钉9.0003.677.7101.821.68328.422
8土钉8.00015.986.6101.85.4586.418
[整体稳定验算结果]
工况号安全系数圆心坐标x(m)圆心坐标y(m)半径(m)
11.86010.93614.0963.500
21.9829.41613.8604.802
31.7078.79913.9416.344
41.4186.27516.33510.371
51.4887.64913.6158.016
61.4175.34414.32611.684
71.3755.63010.2159.378
81.3543.78113.88213.779
91.3052.54514.33414.558
[喷射混凝土面层计算]
[计算参数]
厚度:
80(mm)
混凝土强度等级:
C20
配筋计算as:
20(mm)
水平配筋:
d8@200
竖向配筋:
d8@200
配筋计算as:
20
荷载分项系数:
1.250
[计算结果]
编号深度范围荷载值(kPa)轴向M(kN.m)As(mm^2)实配As(mm^2)
10.00~1.500.0x0.002160.0(构造)251.3
y0.002160.0(构造)251.3
21.50~3.007.5x0.618160.0(构造)251.3
y0.618160.0(构造)251.3
33.00~4.5023.9x1.980160.0(构造)251.3
y1.980160.0(构造)251.3
44.506.0052.9x2.384190.4251.3
y2.384190.4251.3
56.00~8.0018.9x2.635169.4251.3
y1.354160.0(构造)251.3
68.00~9.201.2x0.059160.0(构造)251.3
y0.099160.0(构造)251.3
79.20~10.4012.8x0.677160.0(构造)251.3
y0.677160.0(构造)251.3
810.40~11.6027.1x1.437160.0(构造)251.3
y1.437160.0(构造)251.3
911.60~12.6051.2x1.757160.0(构造)251.3
y2.681172.5251.3
[抗隆起验算]
1)从支护底部开始,逐层验算抗隆起稳定性,结果如下:
支护底部,验算抗隆起:
Ks=2.367≥1.600,抗隆起稳定性满足。
深度13.300处,验算抗隆起:
Ks=3.093≥1.600,抗隆起稳定性满足。
----------------------------------------------------------------------
验算项目:
1-1剖面(按照350#孔验算)
----------------------------------------------------------------------
[验算简图]
----------------------------------------------------------------------
[验算条件]
----------------------------------------------------------------------
[基本参数]
所依据的规程或方法:
《建筑基坑支护技术规程》JGJ120-20
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