渡叉河2号门架墩计算书Word格式文档下载.docx
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m)
工况一剪力包络图(kN)
B、桥墩盖梁抗弯强度检算
按《公路钢筋混凝土及预应力混凝土桥涵设计规范》(JTGD62-2004)第5.1.5条规定的承载能力极限状态进行内力组合,检算结果如下:
承载能力极限状态正截面抗弯强度检算
单元号
节点号
内力属性
Mj
极限抗力R
受力类型
R满足否
1
最大弯矩
9.85E+03
下拉受弯
是
最小弯矩
2
6.00E+02
-4.30E+03
下拉偏拉
-2.53E+03
1.43E+04
上拉偏压
3
4.77E+02
-5.36E+03
-2.52E+03
1.58E+04
4
2.83E+02
-2.03E+04
-2.58E+03
1.47E+04
5
4.86E+01
-2.95E+04
-2.74E+03
1.39E+04
6
-2.44E+02
-1.57E+04
上拉偏拉
-2.97E+03
1.29E+04
7
-6.11E+02
-4.17E+03
-3.27E+03
1.20E+04
8
-1.05E+03
-9.87E+03
-3.62E+03
1.11E+04
9
-1.57E+03
-7.78E+03
-4.04E+03
1.04E+04
10
-2.16E+03
-6.59E+03
-4.52E+03
9.86E+03
11
-2.80E+03
-5.80E+03
-5.09E+03
9.47E+03
12
-3.49E+03
-5.08E+03
-5.74E+03
9.10E+03
13
-4.24E+03
-4.88E+03
-6.47E+03
8.82E+03
14
-5.05E+03
-4.46E+03
-7.27E+03
8.53E+03
15
-5.92E+03
-4.13E+03
-8.15E+03
8.20E+03
16
-6.70E+03
-3.50E+03
-8.93E+03
7.89E+03
17
-7.76E+03
7.84E+03
-1.11E+04
-4.69E+04
上拉受弯
18
-6.96E+03
8.26E+03
-9.97E+03
19
-6.28E+03
8.67E+03
-8.97E+03
-4.63E+04
20
-5.32E+03
9.29E+03
-7.54E+03
-4.43E+04
21
-4.41E+03
9.90E+03
-6.18E+03
-4.03E+04
22
-3.53E+03
1.10E+04
-4.94E+03
-3.62E+04
23
-2.62E+03
1.27E+04
-3.85E+03
-1.58E+03
24
-1.79E+03
1.61E+04
-2.83E+03
25
-834
-4.61E+03
-2.06E+03
1.28E+04
26
9.53E+01
-2.60E+04
-1.41E+03
1.81E+04
27
813
-9.40E+03
-9.13E+02
3.50E+04
28
1.61E+03
-5.47E+03
-3.72E+02
7.52E+04
29
2.33E+03
-4.00E+03
1.07E+02
1.07E+05
下拉偏压
30
2.97E+03
5.24E+02
6.16E+04
31
3.54E+03
5.74E+04
8.79E+02
7.78E+04
32
4.04E+03
5.75E+04
1.17E+03
3.97E+04
33
4.46E+03
1.40E+03
34
4.81E+03
1.57E+03
2.55E+04
35
5.09E+03
1.68E+03
2.40E+04
36
5.29E+03
1.73E+03
2.34E+04
37
5.47E+03
1.66E+03
2.43E+04
38
5.58E+03
1.52E+03
2.64E+04
39
5.62E+03
5.73E+04
1.32E+03
40
5.58E+04
1.06E+03
41
5.34E+04
7.42E+02
8.51E+04
42
4.95E+04
3.58E+02
7.66E+04
43
5.03E+03
4.56E+04
-86.9
44
4.71E+03
4.14E+04
-6.04E+02
5.69E+04
45
4.44E+03
3.79E+04
-1.32E+03
2.17E+04
46
3.50E+03
3.39E+04
2.89E+03
结论:
本阶段桥墩盖梁抗弯强度满足规范要求。
C、桥墩盖梁抗裂及应力检算
工况一荷载短期组合应力结果如下:
短期组合下盖梁上下缘最小正应力图(MPa)
短期组合下盖梁斜截面主拉应力图(MPa)
按《公路钢筋混凝土及预应力混凝土桥涵设计规范》(JTGD62-2004)第7.1.5条关于A类预应力混凝土现浇构件的规定进行应力检算,结果如下:
标准组合下盖梁上下缘最大正应力图(MPa)
标准组合下盖梁斜截面主压应力图(MPa)
短期组合下盖梁最大拉应力为0.744MPa,最大主拉应力为0.744MPa;
标准组合下盖梁最大正应力为5.89MPa,最大主压应力为5.89MPa。
桥墩盖梁抗裂性及应力结果满足规范要求。
D、桥墩墩身正截面强度及裂缝宽度检算
桥墩墩身配筋详见施工图,墩身强度及裂缝宽度检算结果如下:
Nj
上缘裂缝宽度W1
下缘裂缝宽度W2
47
59
3.27E+03
2.16E+03
3.22E+04
0.0524
2.09E+03
-3.88E+02
5.59E+04
48
60
3.36E+03
1.88E+03
3.59E+04
0.0417
2.17E+03
-293
5.94E+04
49
61
3.44E+03
1.60E+03
4.00E+04
0.0327
2.24E+03
-199
6.26E+04
50
62
3.53E+03
4.46E+04
0.0261
2.32E+03
-104
6.58E+04
51
73
1.35E+03
5.91E+02
4.12E+04
0.222
2.06E+03
-5.06E+03
4.92E+03
52
64
1.42E+03
4.27E+02
4.87E+04
0.191
2.15E+03
-4.43E+03
6.38E+03
53
65
2.23E+02
5.86E+04
0.151
2.26E+03
-3.64E+03
9.43E+03
54
66
17.8
6.44E+04
0.174
2.37E+03
-2.85E+03
1.12E+04
55
67
1.70E+03
-187
5.81E+04
0.116
2.49E+03
-2.05E+03
2.12E+04
56
68
1.79E+03
-392
5.08E+04
0.0606
2.60E+03
-1.26E+03
3.60E+04
57
300
3.47E+03
-2.16E+01
5.02E+04
-2.63E+01
5.03E+04
58
301
5.24E+03
2.15E+01
5.04E+04
3.74E+03
-7.94E+00
桥墩墩身正截面强度满足要求,最大裂缝宽度为0.222mm。
2.2.1工况二:
架设第六片主梁,张拉第二批钢束之前
A、工况二弯矩、剪力包络图
工况二弯矩包络图(kN·
工况二剪力包络图(kN)
-1.49E+03
-3.30E+03
1.15E+04
-1.23E+03
-3.88E+03
-4.58E+03
1.26E+04
-1.01E+03
-4.15E+03
1.38E+04
-8.48E+02
-5.01E+03
-3.78E+03
1.50E+04
-7.48E+02
-5.04E+03
1.62E+04
-6.66E+02
-3.39E+03
-3.32E+03
1.60E+04
-6.08E+02
-3.61E+03
-3.26E+03
1.63E+04
-6.24E+02
-4.12E+03
-7.13E+02
-3.57E+03
-3.33E+03
-8.77E+02
-3.54E+03
-3.45E+03
-2.73E+03
-3.70E+04
-4.99E+03
1.24E+04
-4.47E+03
-4.04E+04
-6.77E+03
1.09E+04
-6.21E+03
-4.39E+04
-8.69E+03
9.62E+03
-8.02E+03
-4.62E+04
-1.07E+04
8.76E+03
-1.37E+04
7.77E+03
-1.65E+04
-2.17E+04
-1.38E+04
8.49E+03
-1.81E+04
-1.14E+04
9.37E+03
-1.51E+04
6.19E+03
-7.79E+03
-1.05E+04
6.96E+03
-5.63E+03
1.37E+04
-7.62E+03
7.73E+03
-3.47E+03
2.14E+04
-4.87E+03
7.95E+03
6.68E+04
1.29E+03
6.15E+04
-2.34E+02
8.38E+04
3.78E+03
9.57E+03
1.78E+03
4.17E+04
6.23E+03
6.26E+03
3.69E+03
2.05E+04
8.21E+03
5.02E+03
1.51E+04
1.05E+04
4.14E+03
7.04E+03
1.18E+04
3.55E+03
8.79E+03
9.78E+03
1.49E+04
3.11E+03
8.41E+03
1.70E+04
1.21E+04
7.37E+03
1.90E+04
1.36E+04
6.57E+03
2.10E+04
5.93E+03
1.52E+04
5.90E+03
2.15E+04
5.91E+03
2.16E+04
5.97E+03
2.00E+04
1.35E+04
6.64E+03
1.83E+04
1.19E+04
7.48E+03
1.65E+04
1.02E+04
8.55E+03
2.98E+03
9.94E+03
3.67E+03