#预应力混凝土连续刚构计算书Word格式文档下载.docx
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b>
不均匀温差成分：
①新西兰升温温差模式；
②修正英国降温温差模式。
c>
计算采用如下三种温度组合模式：
<
h为箱梁高度） 表2-1
模式一
至箱底距（m>
0.0
0.2
h-1.2
h-0.6
h-0.4
h-0.25
h-0.1
h
温度（℃>
1.5
0.6
1.0
6.2
13.0
20.0
模式二
0.25
h-0.45
-6.5
-1.0
-0.5
-8.4
3．施工工序
本桥下部结构为群桩基础，采用钻孔施工；
上部结构采用悬臂浇注法双T同时施工，先合拢中跨，然后合拢次中跨，最后合拢边跨。
边跨现浇段采用落地支架及合拢段才采用合拢支架施工。
4．桥梁线形
本桥为直线桥，位于R=10000M的不对称竖曲线上，纵坡为2.099%和-2.1%，竖曲线顶点位于中跨。
曲线对结构影响较小，因此在计算中假定本桥为平直桥，在计算中未考虑竖曲线的影响。
5．挂篮型式和临时荷载
上部结构悬浇最大块件重量为130吨，设计计算中将挂篮、模板等施工外载取130吨的0.45倍，即60吨。
并暂假定挂篮、模板重心距已浇梁段前端0.5M位置。
边跨合拢挂篮、吊架和模板等施工外载30吨，每侧按15吨取。
中跨合拢挂篮、吊架和模板等施工外载30吨，两侧各施加15吨，作用点距悬臂端部50厘M。
6．二期恒载和运营活载
二期恒载：
6.2t/m
活载：
三列汽超20，一列挂120，人群荷载按0.35t/m2,人行道净宽1m.
偏载放大系数近似全桥一致取1.1。
横向分布系数：
汽车 3×
0.78×
1.1=2.574
挂车 1.1
人群 1.1
7．竖向预应力
每根粗钢筋设计张拉控制应力σK=0.9Rby=675Mpa，张拉力543KN，考虑锚具回缩2毫M，松弛7%，则对2.8M长粗钢筋近似损失应力:
σS=0.002*2*105/2.8+7%*675=190.1Mpa≈0.3σK。
近似按全部粗钢筋有效拉应力0.7σK。
粗钢筋纵向布置间距50厘M，横向每侧腹板2根共4根，则每延M竖向预加力F=8*0.7*543=3041KN。
二．结构离散
本次计算将整个桥梁离散为80个单元，节点按照顺序划分。
单元划分见如下结构离散图
三．施工阶段内力和正应力计算结果
根据施工阶段划分表中各施工工序，进行了详细计算。
最大悬臂阶段即16阶段，成桥阶段即21阶段主梁的内力、上下缘应力如下。
第16施工阶段结构效应
阶段累计结果:
单元号节点号轴力剪力弯矩
110.000e+0000.000e+0000.000e+000
120.000e+0000.000e+0000.000e+000
220.000e+0000.000e+0000.000e+000
230.000e+0000.000e+0000.000e+000
330.000e+0000.000e+0000.000e+000
340.000e+0000.000e+0000.000e+000
440.000e+0000.000e+0000.000e+000
450.000e+0000.000e+0000.000e+000
557.580e+003-6.000e+0026.910e+003
567.643e+0031.581e+0032.162e+003
661.515e+004-1.581e+0039.104e+003
671.529e+0042.572e+0034.890e+002
772.281e+004-2.572e+0037.743e+003
782.301e+0043.580e+003-4.358e+003
883.788e+004-3.580e+0031.096e+004
893.818e+0044.516e+003-1.146e+003
995.289e+004-4.516e+0031.545e+004
9105.343e+0045.517e+0032.470e+003
10106.081e+004-5.517e+0031.168e+004
10116.150e+0046.595e+003-2.738e+003
11116.892e+004-6.595e+0037.597e+003
11126.953e+0047.744e+003-9.170e+003
12127.696e+004-7.744e+0032.356e+003
12137.766e+0048.951e+003-1.559e+004
13138.512e+004-8.951e+003-2.643e+003
13148.574e+0041.006e+004-1.904e+004
14149.320e+004-1.006e+004-4.734e+003
14159.390e+0041.123e+004-2.127e+004
15151.014e+005-1.123e+004-5.387e+003
15161.020e+0051.246e+004-2.221e+004
16161.168e+005-1.246e+0041.247e+004
16171.175e+0051.375e+004-2.242e+003
17171.321e+005-1.375e+0043.215e+004
17181.329e+0051.492e+0042.201e+004
18181.474e+005-1.492e+0045.388e+004
18191.483e+0051.615e+0044.698e+004
19191.624e+005-1.615e+0048.495e+004
19201.634e+0051.710e+0048.179e+004
20201.634e+005-1.710e+0048.179e+004
20211.637e+0051.747e+0046.983e+004
21211.637e+0051.311e+0036.941e+004
21221.639e+005-9.397e+0027.080e+004
22221.639e+0059.397e+0027.080e+004
22231.643e+005-2.340e-0027.286e+004
23231.643e+0052.340e-0027.286e+004
23241.639e+0059.396e+0027.081e+004
24241.639e+005-9.396e+0027.081e+004
24251.637e+0051.311e+0036.943e+004
25251.637e+0051.747e+0046.985e+004
25261.634e+005-1.710e+0048.194e+004
26261.634e+0051.710e+0048.194e+004
26271.624e+005-1.615e+0048.495e+004
27271.483e+0051.615e+0044.698e+004
27281.474e+005-1.492e+0045.390e+004
28281.329e+0051.492e+0042.204e+004
28291.321e+005-1.375e+0043.215e+004
29291.175e+0051.375e+004-2.242e+003
29301.168e+005-1.246e+0041.248e+004
30301.020e+0051.246e+004-2.220e+004
30311.014e+005-1.123e+004-5.388e+003
31319.390e+0041.123e+004-2.127e+004
31329.320e+004-1.006e+004-4.737e+003
32328.574e+0041.006e+004-1.904e+004
32338.512e+004-8.951e+003-2.647e+003
33337.766e+0048.951e+003-1.560e+004
33347.695e+004-7.744e+0032.350e+003
34346.952e+0047.744e+003-9.175e+003
34356.892e+004-6.595e+0037.590e+003
35356.150e+0046.595e+003-2.743e+003
35366.080e+004-5.517e+0031.167e+004
36365.343e+0045.517e+0032.463e+003
36375.288e+004-4.516e+0031.544e+004
37373.817e+0044.516e+003-1.150e+003
37383.787e+004-3.580e+0031.096e+004
38382.301e+0043.580e+003-4.359e+003
38392.281e+004-2.572e+0037.740e+003
39391.529e+0042.572e+0034.880e+002
39401.515e+004-1.581e+0039.102e+003
40407.642e+0031.581e+0032.161e+003
40417.579e+003-6.000e+0026.909e+003
41410.000e+0000.000e+0000.000e+000
41420.000e+0000.000e+0000.000e+000
42420.000e+0000.000e+0000.000e+000
42430.000e+0000.000e+0000.000e+000
43437.579e+003-6.000e+0026.909e+003
43447.642e+0031.581e+0032.161e+003
44441.515e+004-1.581e+0039.102e+003
44451.529e+0042.572e+0034.880e+002
45452.281e+004-2.572e+0037.740e+003
45462.301e+0043.580e+003-4.359e+003
46463.787e+004-3.580e+0031.096e+004
46473.817e+0044.516e+003-1.151e+003
47475.288e+004-4.516e+0031.544e+004
47485.343e+0045.517e+0032.463e+003
48486.080e+004-5.517e+0031.167e+004
48496.150e+0046.595e+003-2.744e+003
49496.892e+004-6.595e+0037.590e+003
49506.952e+0047.744e+003-9.175e+003
50507.695e+004-7.744e+0032.350e+003
50517.766e+0048.951e+003-1.560e+004
51518.512e+004-8.951e+003-2.648e+003
51528.574e+0041.006e+004-1.904e+004
52529.320e+004-1.006e+004-4.737e+003
52539.390e+0041.123e+004-2.127e+004
53531.014e+005-1.123e+004-5.388e+003
53541.020e+0051.246e+004-2.221e+004
54541.168e+005-1.246e+0041.247e+004
54551.175e+0051.375e+004-2.242e+003
55551.321e+005-1.375e+0043.215e+004
55561.329e+0051.492e+0042.201e+004
56561.474e+005-1.492e+0045.388e+004
56571.483e+0051.615e+0044.698e+004
57571.624e+005-1.615e+0048.495e+004
57581.634e+0051.710e+0048.179e+004
58581.634e+005-1.710e+0048.179e+004
58591.637e+0051.747e+0046.983e+004
59591.637e+0051.311e+0036.942e+004
59601.639e+005-9.397e+0027.080e+004
60601.639e+0059.397e+0027.080e+004
60611.643e+005-7.389e-0027.286e+004
61611.643e+0057.389e-0027.286e+004
61621.639e+0059.396e+0027.081e+004
62621.639e+005-9.396e+0027.081e+004
62631.637e+0051.310e+0036.944e+004
63631.637e+0051.747e+0046.985e+004
63641.634e+005-1.710e+0048.194e+004
64641.634e+0051.710e+0048.194e+004
64651.624e+005-1.615e+0048.494e+004
65651.483e+0051.615e+0044.698e+004
65661.474e+005-1.492e+0045.390e+004
66661.329e+0051.492e+0042.204e+004
66671.321e+005-1.375e+0043.215e+004
67671.175e+0051.375e+004-2.242e+003
67681.168e+005-1.246e+0041.247e+004
68681.020e+0051.246e+004-2.220e+004
68691.014e+005-1.123e+004-5.389e+003
69699.390e+0041.123e+004-2.126e+004
69709.320e+004-1.006e+004-4.738e+003
70708.574e+0041.006e+004-1.904e+004
70718.512e+004-8.951e+003-2.648e+003
71717.766e+0048.951e+003-1.559e+004
71727.695e+004-7.744e+0032.351e+003
72726.953e+0047.744e+003-9.173e+003
72736.892e+004-6.595e+0037.591e+003
73736.150e+0046.595e+003-2.743e+003
73746.080e+004-5.517e+0031.167e+004
74745.343e+0045.517e+0032.463e+003
74755.288e+004-4.516e+0031.544e+004
75753.817e+0044.516e+003-1.150e+003
75763.787e+004-3.580e+0031.096e+004
76762.301e+0043.580e+003-4.359e+003
76772.281e+004-2.572e+0037.740e+003
77771.529e+0042.572e+0034.880e+002
77781.515e+004-1.581e+0039.102e+003
78787.642e+0031.581e+0032.161e+003
78797.579e+003-6.000e+0026.909e+003
79790.000e+0000.000e+0000.000e+000
79800.000e+0000.000e+0000.000e+000
80800.000e+0000.000e+0000.000e+000
80810.000e+0000.000e+0000.000e+000
81817.579e+003-6.000e+0026.909e+003
81827.642e+0031.581e+0032.161e+003
82821.515e+004-1.581e+0039.102e+003
82831.529e+0042.572e+0034.880e+002
83832.281e+004-2.572e+0037.740e+003
83842.301e+0043.580e+003-4.359e+003
84843.787e+004-3.580e+0031.096e+004
84853.817e+0044.516e+003-1.151e+003
85855.288e+004-4.516e+0031.544e+004
85865.343e+0045.517e+0032.463e+003
86866.080e+004-5.517e+0031.167e+004
86876.150e+0046.595e+003-2.744e+003
87876.892e+004-6.595e+0037.590e+003
87886.952e+0047.744e+003-9.175e+003
88887.695e+004-7.744e+0032.350e+003
88897.766e+0048.951e+003-1.560e+004
89898.512e+004-8.951e+003-2.648e+003
89908.574e+0041.006e+004-1.904e+004
90909.320e+004-1.006e+004-4.737e+003
90919.390e+0041.123e+004-2.127e+004
91911.014e+005-1.123e+004-5.388e+003
91921.020e+0051.246e+004-2.221e+004
92921.168e+005-1.246e+0041.247e+004
92931.175e+0051.375e+004-2.242e+003
93931.321e+005-1.375e+0043.215e+004
93941.329e+0051.492e+0042.201e+004
94941.474e+005-1.492e+0045.388e+004
94951.483e+0051.615e+0044.698e+004
95951.624e+005-1.615e+0048.495e+004
95961.634e+0051.710e+0048.179e+004
96961.634e+005-1.710e+0048.179e+004
96971.637e+0051.747e+0046.983e+004
97971.637e+0051.311e+0036.942e+004
97981.639e+005-9.396e+0027.080e+004
98981.639e+0059.
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