2、桩的变形系数?
??5mb1EI
2
4
47EI?0.8ECI EC=2.8?10 KN/m I?0.0491d=0.249 m
??59783?2.250.8?2.8?10?0.2497=0.352
?h?0.352x27=9.504>2.5 按弹性计算
3. 作用在局部冲刷线处的基本组合值：
M0?1.4M汽?0.6(1.4M制动?1.1M风?1.4M人)
?1.4 ?682,06?0.32?0.6??1.4?45?10.18?1.1?16.25?1.4?13.63??707.25(kN?m)
?0.7(1.4HH?1.1H风）0制动 0.7?(1.4?45?1.1?2.175)? 45.77(kN)?4. 单位“力”作用在局部冲刷线处的，桩柱在该处产生的变位计算
ah?9.504?4，取ah?4.0。
0?B3D4?B4D3?12.441?HH?3??37?EI?A3B4?A4B3?0.352?0.5578?10
?5 ?1.003?10 0?A3D4?A4D3?11.6250?MH??HM?2??27 ?EI?A3B4?A4B3?0.352?0.5578?10?4 ?0.0235?10 0?A3C4?A4C3?11.751?MM???7 ?EI?A3B4?A4B3?0.352?0.5578?10?4 ?0.0089?10
5. 局部冲刷线处变位计算：
00?4?4 X0?H0?HH?M0?HM?45.74?0.1003?10?642.47?0.0235?10 ?1.97?600 ?0???H0?MH?M0?MM ?2??0.0679?10
????45.74?0.0235?10?4?642.47?0.0089?10?4?6. 局部冲刷线以下深度各截面内力计算：
?MH1??22MZ??EI?X0A3?0B3?20C3?30D3???EIX0A3??EI?0B3?M0C3?H0D3??EI?EI???
?EIX0?0.352?0.5578?10?0.197?10227?2?0.136?10
13
4?EI?0?0.352?0.5758?10???0.0679?107?2???0.1333?104
1 1H0??45.74?129.94?0.352
M?0.136?10A3?0.133?10B3?642.47C3?129.94D3
44由表可知：最大弯矩设计值Md?682.60(kN?m)，Z?1.22m
桩身弯矩图Mz（KN*m）800.00000弯矩Mz（KN*m）600.00000400.00000200.000000.00000azzA3B3C3D3MZ0.571.702.845.117.39-200.00000桩长 Z(m)
桩身弯矩计算表 ?h Z 0.57 1.14 1.70 2.27 2.84 3.98 5.11 6.25 7.39 8.52 9.94 11.36 A3 B3 9.94C3 D3 MZ 0.2 0.4 0.8 1.0 1.2 1.6 1.8 2.0 2.4 3.0 3.6 4.0 -0.00133 -0.01067 -0.08532 -0.16652 -0.28737 -0.67629 -0.95564 -1.69334 -2.62126 -3.54058 -3.91921 -1.61428 -0.00013 -0.00213 -0.03412 -0.08532 -0.17260 -0.54348 -0.86715 -1.90567 -3.59987 -5.99979 -9.54367 -11.7307 0.99999 0.99974 0.99181 0.97501 0.93783 0.73859 0.52997 -0.27087 -1.87734 -4.