擋墻橋墩沖刷計算表

項目,K19+460～K19+530,K20+630～K20+680,K19+200～K19+246,K19+258～K19+288,K7+397～K7+430,K7+660～K7+740,K7+900～K7+950,K8+000～K8+060,K19+380～K19+460,K20+018～K20+060,,K17+616橋頭2號大橋,17+960橋頭3號大橋,L1K1+099韓家大橋,L1K1+825上韓家大橋,,,K19+460～K19+530,K20+630～K20+680,K19+200～K19+246,K19+258～K19+288,K7+397～K7+430,K7+660～K7+740,K7+900～K7+950,K8+000～K8+060,K19+380～K19+460

,1,2,3,4,5,6,7,8,9,10,,,,14,15,,,15,16,17,18,19,21,16,25,26

流量Q=ωV,77106.40,896.883,195.90,60.10,667.51,192.56,95.22,274.65,209.42,265.13,,135.001,166.92,262.11,206.75,,,184.83,87.85,785.90,507.47,2607.08,,83.34,262.11,46.50

平均流速V=R2/3I1/2/n,15.74,5.307,3.04,3.34,4.57,3.80,3.17,3.70,3.28,3.51,,4.644,4.173,3.69,4.53,,,6.16,3.33,6.05,5.52,12.38,,3.47,3.69,2.21

水力半徑R=ω/χ,54.44,1.61,0.69,0.69,1.22,0.91,0.86,0.85,1.01,0.82,,0.861,0.645,0.64,1.32,,,1.43,0.55,2.52,2.19,3.90,,0.59,0.64,0.59

橋梁凈跨,20,20,30,30,30,20,20,20,20,20,,20,20,30,30,,,20,20,20,20,20,,20,30,30

河槽中橋墩的數(shù)量,2,6,2,2,4,6,2,5,5,6,,0,7,7,8,,,3,6,3,2,2,,2,7,8

1/n,10,14.3,14.3,14.3,14.3,14.3,14.3,25,20,25,,17,25,25,18,,,15,15,10,10,15,,15,25,15

I(‰)（河道比降）,12,73,74.14,89.1,78.67,80.24,60.53,27.41,26.57,25.598,,91.1,50,39.1,44,,,104.8,108.5,107,107,111.07,,108.5,39.1,44

河槽寬度Bc,70,80,104,102,50,122.00,80,90,110,154,,33,158.3,108.1,36,,,23.54,47.26,47.7,38.72,52.63,,24,108.1,36

長,70,50,46,30,33,80.00,50,60,80,42,,,,,,,,,,,,,,,,

ω(面積),4900,169,64.5456,18,146,50.73,30,74.25,63.77,75.6,,29.07,40,71.09,45.6,,,30,26.3891,129.88,92,210.52,,24.03,71.09,21.08

χ（濕周）,90,105,93.8596,26,120,55.95,35,87.88,63.08,92.1,,33.78,62,110.41,34.65,,,21,47.7392,51.63,42,54,,40.86,110.41,35.94

設計流量QS,472.95,875.181,350.57,61.55,659.53,330.98,96.8,285.06,272.67,271.56,,201.38,161.6,255.57,274.51,,,350,152.889,762.92,751.57,145.96,,132.95,255.57,47

η=(QS-Q)/QS,16203.3%,2.5%,44.1%,2.4%,1.2%,41.8%,1.6%,3.7%,23.2%,2.4%,,33.0%,3.3%,2.6%,24.7%,,,47.2%,42.5%,3.0%,32.5%,1686.2%,,37.3%,2.6%,1.1%

橋下河槽最大水深hmc,1,0.8,1.1,0.44,1.67,0.75,0.575,1,1.7,1,,1.2,0.5,2,1.2,,,1.3,1.2,1.5,1.5,0.5,,1.2,2,1.2

河槽部分設計流量Q2,472.95,875.181,350.57,61.55,659.533,330.98,96.8,285.06,272.67,271.56,,201.38,161.6,255.57,274.51,,,350,152.889,762.92,751.57,145.96,,132.95,255.57,47

天然狀態(tài)下河槽流量QC,472.95,875.181,350.57,61.55,659.533,330.98,96.8,285.06,272.67,271.56,,201.38,161.6,255.57,274.51,,,350,152.889,762.92,751.57,145.96,,132.95,255.57,47

"天然狀態(tài)下河灘流量Qt""",0,0,0,0,0,0,0,0,0,0,,0,0,0,0,,,0,0,0,0,0,,0,0,0

橋墩水流側(cè)向壓縮系數(shù)μ=1-0.375*V/L,0.705,0.9,0.962,0.958,0.943,0.929,0.94,0.931,0.938,0.934,,0.913,0.922,0.954,0.943,,,0.884,0.938,0.887,0.897,0.768,,0.935,0.954,0.972

河槽平均水深hc,70,2.113,0.621,0.176,2.92,0.416,0.375,0.825,0.58,0.491,,0.881,0.253,0.658,1.267,,,1.274,0.558,2.723,2.376,4,,1.001,0.658,0.586

砂礫平均粒徑dc(mm),100,30,100,100,500,500,100,400,250,250,,100,100,200,100,,,100,100,100,100,100,,100,200,100

單寬流量集中系數(shù)A=(B0.5/H)0.15,0.727,1.242,1.522,1.836,1.142,1.635,1.609,1.442,1.544,1.623,,1.325,1.797,1.513,1.263,,,1.222,1.457,1.15,1.155,1.093,,1.269,1.513,1.418

平灘水位河槽寬度B,70,80,104,102,50,122,80,90,110,154,,33,158.3,108.1,36,,,23.54,47.26,47.7,38.72,52.63,,24,108.1,36

平灘水位河槽平均水深H,70,2.113,0.621,0.176,2.92,0.416,0.375,0.825,0.58,0.491,,0.881,0.253,0.658,1.267,,,1.274,0.558,2.723,2.376,4,,1.001,0.658,0.586

(公式64-1)hp,0.032,1.599,3.412,1.925,1.925,2.818,1.672,1.98,4.455,2.593,,3.482,2.137,4.564,3.236,,,4.82,4.36,2.47,3.136,0.203,,2.976,4.564,2.554

橋下河槽部分橋孔過水凈寬BC',67.4,72.2,100.4,98.4,43.6,114.2,77.4,83.5,103.5,146.2,,33,149.2,99,25.6,,,19.64,39.46,43.8,36.12,50.03,,21.4,99,25.6

AQ2(hmc/hc)5/3,0.289,215.379,1383.645,520.396,296.796,1445.216,317.56,566.428,2527.277,1442.276,,446.589,903.799,2466.166,316.691,,,442.346,798.143,324.775,403.298,4.985,,228.242,2466.166,220.08

μBc'Ed1/6,88.04,98.507,178.954,174.66,99.615,257.045,134.803,181.473,209.555,294.747,,55.823,254.878,196.421,44.728,,,32.168,68.579,71.983,60.031,71.191,,37.073,196.421,46.104

含沙量系數(shù)E,0.86,0.86,0.86,0.86,0.86,0.86,0.86,0.86,0.86,0.86,,0.86,0.86,0.86,0.86,,,0.86,0.86,0.86,0.86,0.86,,0.86,0.86,0.86

(公式64-2)hp,1.008,1.16,1.753,0.833,2.227,1.331,0.977,1.593,2.838,1.741,,1.707,0.967,3.302,2.004,,,1.98,2.058,2.026,1.998,0.693,,1.743,3.302,2.181

AQ2/QC,0.727,1.242,1.522,1.836,1.142,1.635,1.609,1.442,1.544,1.623,,1.325,1.797,1.513,1.263,,,1.222,1.457,1.15,1.155,1.093,,1.269,1.513,1.418

BC/((1-λ)μB2),1.473,1.231,1.077,1.082,1.216,1.15,1.1,1.158,1.133,1.128,,1.095,1.151,1.145,1.491,,,1.356,1.277,1.228,1.195,1.37,,1.199,1.145,1.447

BC,70,80,104,102,50,122,80,90,110,154,,33,158.3,108.1,36,,,23.54,47.26,47.7,38.72,52.63,,24,108.1,36

B2,70,80,104,102,50,122,80,90,110,154,,33,158.3,108.1,36,,,23.54,47.26,47.7,38.72,52.63,,24,108.1,36

橋墩阻水總面積與橋下過水面積比值λ,0.03714,0.09752,0.03464,0.0352,0.128,0.06396,0.0325,0.07222,0.05912,0.05066,,0,0.05756,0.08423,0.28896,,,0.16562,0.16493,0.08177,0.06715,0.0494,,0.10831,0.08423,0.28911

(公式65-1)hb,-0.402,0.844,1.535,0.951,0.361,0.694,0.642,0.402,1.33,0.82,,1.259,0.856,1.38,1.202,,,1.494,1.425,0.98,1.177,-0.287,,1.135,1.38,1.008

KξKηB10.6(VO-V'O),0.342,0.55,0.822,0.759,0.773,0.703,0.595,0.661,0.72,0.667,,0.659,0.616,0.713,0.653,,,0.69,0.68,0.628,0.65,0.443,,0.645,0.713,0.631

((V-VO')/(VO-VO'))n,#NUM!,1.534,1.868,1.253,0.407,0.988,1.079,0.572,1.847,1.229,,1.91,1.39,1.935,1.841,,,2.165,2.095,1.56,1.811,#NUM!,,1.76,1.935,1.597

V=Ed1/6hp2/3,0.187,2.073,4.199,2.867,3.749,4.834,2.61,3.681,5.844,4.074,,4.256,3.074,5.722,4.054,,,5.287,4.945,3.386,3.97,0.64,,3.833,5.722,3.462

VO,1.453,1.629,2.793,2.578,4.602,4.854,2.528,4.264,4.033,3.738,,2.801,2.616,3.734,2.773,,,2.932,2.891,2.67,2.761,1.882,,2.74,3.734,2.682

VO',0.871,0.909,1.642,1.516,3.001,3.205,1.516,2.778,2.555,2.368,,1.679,1.568,2.334,1.662,,,1.758,1.733,1.601,1.655,1.128,,1.643,2.334,1.608

n,3.42,0.891,0.783,0.938,1.182,1.003,0.981,1.122,0.767,0.94,,0.778,0.908,0.747,0.796,,,0.702,0.725,0.867,0.804,1.91,,0.818,0.747,0.858

Kη,0.502,0.653,0.502,0.502,0.364,0.364,0.502,0.38,0.416,0.416,,0.502,0.502,0.435,0.502,,,0.502,0.502,0.502,0.502,0.502,,0.502,0.435,0.502

Kξ,1,1,1,1,1,1,1,1,1,1,,1,1,1,1,,,1,1,1,1,1,,1,1,1

橋墩計算寬度B1,1.3,1.3,1.8,1.8,1.6,1.3,1.3,1.3,1.3,1.3,,1.3,1.3,1.3,1.3,,,1.3,1.3,1.3,1.3,1.3,,1.3,1.3,1.3

(公式65-2)hb,-0.245,1.32,1.888,2.217,-0.09,0.789,1.363,0.453,2.012,1.491,,1.887,1.957,2.444,1.864,,,2.187,2.063,1.493,1.463,0.879,,1.415,2.444,1.562

Kn2=0.0023/d2.2+0.375d0.24,1.132,0.848,1.132,1.132,1.666,1.666,1.132,1.58,1.411,1.411,,1.132,1.132,1.337,1.132,,,1.132,1.132,1.132,1.132,1.132,,1.132,1.337,1.132

一般沖刷后墩前行進流速V,0.997,3.033,4.624,6.534,3.437,6.091,4.445,4.522,7.195,6.03,,5.821,7.171,8.364,5.536,,,7.225,6.398,4.376,4.308,3.401,,4.263,8.364,4.51

VO,2.81,1.551,2.81,2.81,6.265,6.265,2.81,5.605,4.433,4.433,,2.81,2.81,3.967,2.81,,,2.81,2.81,2.81,2.81,2.81,,2.81,3.967,2.81

VO',1.515,0.786,1.515,1.515,3.663,3.663,1.515,3.241,2.503,2.503,,1.515,1.515,2.215,1.515,,,1.515,1.515,1.515,1.515,1.515,,1.515,2.215,1.515

n2,1.882,0.71,0.738,0.598,1.562,1.021,0.756,1.168,0.717,0.81,,0.641,0.565,0.608,0.661,,,0.562,0.605,0.763,0.771,0.89,,0.776,0.608,0.749

(公式1+1)沖刷完成后最大水深hp+hb,-0.37,2.443,4.947,2.876,2.286,3.512,2.314,2.382,5.785,3.413,,4.741,2.993,5.944,4.438,,,6.314,5.785,3.45,4.313,-0.084,,4.111,5.944,3.562

(公式2+2)沖刷完成后最大水深hp+hb,0.763,2.48,3.641,3.05,2.137,2.12,2.34,2.046,4.85,3.232,,3.594,2.924,5.746,3.868,,,4.167,4.121,3.519,3.461,1.572,,3.158,5.746,3.743

(64-1)+(65-1)-hmc,-1.37,1.643,3.847,2.436,0.616,2.762,1.739,1.382,4.085,2.413,,3.541,2.493,3.944,3.238,,,5.014,4.585,1.95,2.813,-0.584,,2.911,3.944,2.362

(64-2)+(65-2)-hmc,-0.237,1.68,2.541,2.61,0.467,1.37,1.765,1.046,3.15,2.232,,2.394,2.424,3.746,2.668,,,2.867,2.921,2.019,1.961,1.072,,1.958,3.746,2.543

設計水位,1769.725,1793.511,1831.681,1851.470,1857.488,1866.318,1882.512,1900.708,1913.592,1931.560,,1981.477,1990.523,1924.175,1937.500,,,2018.035,2045.135,2052.000,2052.105,2092.164,,2571.840,1924.175,1936.810

Δh,2,2,2,2,2,2,2,2,2,2,,2,2,2,2,,,2,2,2,2,2,,2,2,2

一般沖刷標高,1768.717,1792.351,1828.269,1850.637,1855.563,1863.5,1881.535,1898.728,1909.137,1928.967,,1977.995,1988.38