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2003年新疆巴楚地震CPT液化数据库构建

董林 张琪 夏坤 彭皓皓 陈强

董林,张琪,夏坤,彭皓皓,陈强,2023. 2003年新疆巴楚地震CPT液化数据库构建. 震灾防御技术,18(4):833−845. doi:10.11899/zzfy20230417. doi: 10.11899/zzfy20230417
引用本文: 董林,张琪,夏坤,彭皓皓,陈强,2023. 2003年新疆巴楚地震CPT液化数据库构建. 震灾防御技术,18(4):833−845. doi:10.11899/zzfy20230417. doi: 10.11899/zzfy20230417
Dong Lin, Zhang Qi, Xia Kun, Peng Haohao, Chen Qiang. Construction of CPT-based Liquefaction Database from 2003 Bachu Earthquake[J]. Technology for Earthquake Disaster Prevention, 2023, 18(4): 833-845. doi: 10.11899/zzfy20230417
Citation: Dong Lin, Zhang Qi, Xia Kun, Peng Haohao, Chen Qiang. Construction of CPT-based Liquefaction Database from 2003 Bachu Earthquake[J]. Technology for Earthquake Disaster Prevention, 2023, 18(4): 833-845. doi: 10.11899/zzfy20230417

2003年新疆巴楚地震CPT液化数据库构建

doi: 10.11899/zzfy20230417
基金项目: 国家自然科学基金(51708525、51608496)
详细信息
    作者简介:

    董林,男,生于1985年。副研究员。主要从事岩土地震工程研究工作。E-mail:donglin408@163.com

Construction of CPT-based Liquefaction Database from 2003 Bachu Earthquake

  • 摘要: 2003年2月24日新疆巴楚—伽师地区发生MS6.8地震,出现了唐山地震、海城地震后近30年我国大陆最具规模的砂土液化现象。大量研究显示,巴楚地震液化砂土标贯击数与锥尖阻力指标偏大,采用国内外液化判别方法往往会判为非液化。利用Robertson土质分类图对巴楚地区孔压静力触探试验(CPTU)数据进行土类分层检验,基于以下原则,选定了液化点液化层与非液化点临界液化层。(1)应选取非液化点土层剖面中最易液化层,不能因液化点力学指标偏大而将非液化点临界液化层力学指标选得更大;(2)应结合qc-hRf-h图,避免选取黏土为液化层;(3)巴楚地区液化层往往上覆非饱和细砂,形成透水边界,选取液化层时应舍弃存在透水边界的土层。最后,利用我国规范方法构建了巴楚地震静力触探(CPT)液化数据库,并进行了初步的判别分析。
  • 图  1  Robertson土类指数分类图

    Figure  1.  CPT-based soil behavior-type chart proposed by Robertson

    图  2  E-06测点原位测试结果

    Figure  2.  In-situ test results of Site E-06

    图  3  E-06测点土类指数分类图

    Figure  3.  CPT-based soil behavior-type chart for site E-06

    图  4  SY-05测点原位测试结果

    Figure  4.  In-situ test results of site SY-05

    图  5  SY-05测点土类指数分类图

    Figure  5.  CPT-based soil behavior-type chart for site SY-05

    图  6  SY-17测点原位测试结果

    Figure  6.  In-situ test results of Site SY-17

    图  7  SY-17测点土类指数分类图

    Figure  7.  CPT-based soil behavior-type chart for site SY-17

    图  8  ZK30测点原位测试结果

    Figure  8.  In-situ test results of Site ZK30

    图  9  ZK30测点土类指数分类图

    Figure  9.  CPT-based soil behavior-type chart for site ZK30

    图  10  基于CPT测试的巴楚地震液化数据库判别

    Figure  10.  Identification result of CPT-based liquefaction database from Bachu earthquake

    表  1  E-06测点CPTU分层结果

    Table  1.   CPTU soil layer classification result of site E-06

    序号分层深度/mqc/MPafs/kPaRf/%σv0/kPaσ′v0/kPanQF/%Ic
    3.0~4.18.3853.250.6466.1066.100.50102.230.641.79
    4.1~5.114.3571.540.5085.7077.860.50161.690.501.56
    5.1~6.3(临界)7.8135.350.46106.2987.670.5082.250.461.79
    6.3~9.0(临界)10.8351.920.48142.92105.190.50104.230.491.71
    9.0~9.73.7916.830.61174.91120.520.5032.900.472.15
    9.7~12.010.7345.560.45203.13134.040.5090.950.431.74
    12.0~14.515.6687.520.60248.29155.680.50123.530.571.69
    下载: 导出CSV

    表  2  E-06测点土层土类检验结果

    Table  2.   Soil layer inspection results of site E-06

    序号钻孔柱状图土类Robertson土质分类图土类
    细砂(埋深3.4~5.7 m)6纯净砂-粉砂(埋深3.0~4.1 m)
    6纯净砂-粉砂(埋深4.1~5.1 m)
    细砂(埋深5.7~12.95 m)6纯净砂-粉砂(埋深5.1~6.3 m)
    6纯净砂-粉砂(埋深6.3~9.0 m)
    5粉砂-砂质粉土(埋深9.0~9.7 m)
    6纯净砂-粉砂(埋深9.7~12.0 m)
    6纯净砂-粉砂(埋深12.0~14.5 m)
    下载: 导出CSV

    表  3  SY-05测点CPTU分层结果

    Table  3.   CPTU soil layer classification result of site SY-05

    序号分层深度/mqc/MPafs/kPaRf/%σv0/kPaσ′v0/kPanQF/%Ic
    0.6~2.83.0393.733.6831.6031.600.5053.423.122.44
    2.8~4.1812.49103.220.8364.9364.930.50154.200.831.72
    4.18~6.86(液)12.6076.420.62102.7284.890.50135.640.611.67
    6.86~8.416.15105.360.89142.01103.500.50157.370.661.64
    8.4~10.02.3989.184.00171.32117.421.0018.884.022.85
    10.0~12.03.09105.973.93205.02133.481.0021.623.672.78
    下载: 导出CSV

    表  4  SY-05测点土层土类检验结果

    Table  4.   Soil layer inspection results of site SY-05

    序号钻孔柱状图土类Robertson土质分类图土类
    粉质黏土(埋深0.6~2.8 m)4黏质粉土-粉质黏土(埋深0.6~2.8 m)
    细砂(埋深2.8~8.4 m)6纯净砂-粉砂(埋深2.8~4.18 m)
    6纯净砂-粉砂(埋深4.18~6.86 m)
    6纯净砂-粉砂(埋深6.86~8.4 m)
    黏土(埋深8.4~10.0 m)3粉质黏土-黏土(埋深8.4~10.0 m)
    4黏质粉土-粉质黏土(埋深10.0~12.0 m)
    下载: 导出CSV

    表  5  SY-17测点CPTU分层结果

    Table  5.   CPTU soil layer classification result of site SY-17

    序号分层深度/mqc/MPafs/kPaRf/%σv0/kPaσ′v0/kPanQF/%Ic
    0.5~2.51.869.240.4927.9317.150.5044.120.512.05
    2.5~4.5(液)2.5314.520.5765.1734.790.5041.870.592.10
    4.5~5.59.4957.580.6193.2048.120.50135.420.611.68
    5.5~7.920.19114.180.56125.1963.450.50251.930.571.45
    7.9~9.2219.57135.200.79160.1880.210.50216.760.701.55
    下载: 导出CSV

    表  6  SY-17测点土层土类检验结果

    Table  6.   Soil layer inspection results of site SY-17

    序号钻孔柱状图土类Robertson土质分类图土类
    细砂(埋深0~4.7 m)6纯净砂-粉砂(埋深0.5~2.5 m)
    5粉砂-砂质粉土(埋深2.5~4.5 m)
    细砂(埋深4.7~9.5 m)6纯净砂-粉砂(埋深4.5~5.5 m)
    6纯净砂-粉砂(埋深5.5~7.9 m)
    6纯净砂-粉砂(埋深7.9~9.22 m)
    下载: 导出CSV

    表  7  ZK30测点CPTU分层结果

    Table  7.   CPTU soil layer classification result of site ZK30

    序号分层深度/mqc/MPafs/kPaRf/%σv0/kPaσ′v0/kPanQF/%Ic
    1.6~2.61.4229.782.3138.9538.950.7026.772.152.57
    2.6~4.1(液)4.0944.611.1462.2254.870.5054.381.112.15
    4.1~6.8(液)8.3865.340.83101.3273.390.5096.640.791.86
    6.8~8.5622.00145.800.66142.9393.150.50226.450.671.53
    下载: 导出CSV

    表  8  ZK30测点土层土类检验结果

    Table  8.   Soil layer inspection results of site ZK30

    序号钻孔柱状图土类Robertson土质分类图土类
    粉质黏土(埋深1.2~3.0 m)4黏质粉土-粉质黏土(埋深1.6~2.6 m)
    细砂(埋深3.0~7.8 m)5粉砂-砂质粉土(埋深2.6~4.1 m)
    6纯净砂-粉砂(埋深4.1~6.8 m)
    中砂(埋深7.8~14.3 m)6纯净砂-粉砂(埋深6.8~8.56 m)
    下载: 导出CSV

    表  9  锥尖阻力基准值qc0

    Table  9.   Liquefied reference value of cone tip resistance

    抗震设防烈度Ⅶ度Ⅷ度Ⅸ度
    qc0/MPa4.6~5.510.5~11.816.4~18.2
    下载: 导出CSV

    表  10  土性修正系数αp

    Table  10.   Values of soil property correction factor αp

    土类砂土粉土
    摩阻比Rf/ %Rf≤0.40.4<Rf≤0.9Rf>0.9
    αp1. 000.600.45
    下载: 导出CSV

    表  11  基于CPT测试的我国方法巴楚地震液化数据库(液化点)

    Table  11.   CPT-based liquefaction database from Bachu earthquake according to Chinese code methods (liquefaction spot)

    测试点地震烈度土层范围/mσv0 /kPaσ′v0/kPaqc/MPaRf/%qc0/MPadw/mdu/mαwαuαpqccr/MPa是否液化
    SY063.2~5.682.7968.096.630.7616.852.93.20.940.940.608.95
    SY074.0~5.487.5168.897.080.8716.852.84.00.950.900.608.63
    SY093.8~5.4686.5758.848.960.6416.851.83.81.010.910.609.32
    SY127.0~9.2151.07105.0111.951.0516.853.47.00.910.750.455.17
    SY14-14.4~5.693.3562.973.160.6616.851.94.41.010.880.608.95
    SY14-27.6~9.3158.1493.9510.140.6816.851.97.61.010.720.607.33
    ZK30-12.6~4.162.2254.874.091.1416.852.62.60.960.970.457.07
    ZK30-24.1~6.8101.3273.398.380.8316.852.64.10.960.900.608.70
    SY012.9~4.062.2458.851.550.9610.832.92.90.940.960.454.38
    SY08-13.14~4.772.9943.885.390.6510.830.953.141.070.940.606.55
    SY08-24.7~8.7124.7568.46.960.810.830.954.71.070.870.606.00
    SY114.0~6.697.3773.856.760.7710.832.94.00.940.900.605.51
    SY163.0~4.872.3257.628.820.8710.832.43.00.970.950.606.01
    SY172.5~4.565.1734.792.530.5710.830.42.51.100.980.606.99
    SY18-15.5~6.8114.5187.566.300.4810.833.45.50.910.830.604.87
    SY18-26.8~8.3140.5899.918.480.5310.833.46.80.910.760.604.49
    SY213.8~5.081.9367.235.180.9010.832.93.80.940.910.605.57
    SY252.7~5.372.2649.727.540.6510.831.72.71.020.970.606.39
    SY054.18~6.86102.7284.8912.600.624.833.74.180.890.890.602.29
    SY192.1~2.946.3142.395.081.714.832.12.10.991.000.452.15
    SY234.0~5.891.3365.855.800.554.832.34.00.980.900.602.55
    SY244.0~7.4106.7278.304.530.674.832.84.00.950.900.602.47
    SY26-13.0~4.771.1057.878.000.74.832.53.00.970.950.602.66
    SY26-24.7~6.26101.4572.255.021.214.832.54.70.970.870.451.82
    SY27-11.66~2.841.0923.643.290.544.830.451.661.101.020.603.24
    SY27-23.8~7.0100.3151.805.800.664.830.453.81.100.910.602.90
    SY295.8~6.9118.4894.4710.440.884.833.95.80.880.810.602.06
    下载: 导出CSV

    表  12  基于CPT测试的我国方法巴楚地震液化数据库(非液化点)

    Table  12.   CPT-based liquefaction database from Bachu earthquake according to Chinese code methods (non-liquefaction spot)

    测试点地震烈度土层
    范围/m
    σv0
    /kPa
    σ′v0/kPaqc/MPaRf/%qc0/MPadw/mdu/mαwαuαpqccr/MPa是否液化
    E026.8~8.2140.8104.5412.811.2116.853.86.80.880.760.455.09
    E04-13.3~4.269.8863.519.590.8116.853.13.30.930.940.68.78
    E04-25.0~6.24105.0780.379.84116.853.150.930.850.455.98
    E056.5~9.2146.43101.8413.870.6516.853.36.50.920.780.67.17
    ZK334.5~5.593.5968.119.230.8316.852.44.50.970.880.68.62
    ZK383.1~4.267.5656.2910.90.7416.852.53.10.970.950.69.24
    ZK394.4~6.096.4971.513.210.5616.852.654.40.960.880.68.52
    E03-15.2~6.0104.2771.9313.330.6610.832.35.20.980.840.65.35
    E03-26.0~8.0130.3484.2815.780.5810.832.36.00.980.800.65.10
    E06-15.1~6.3106.2987.677.810.4610.833.85.10.880.850.64.85
    E06-26.3~9.0142.92105.1910.830.4810.833.86.30.880.790.64.50
    E09-14.0~5.184.9268.753.951.1710.832.94.00.940.900.454.13
    E09-25.1~6.8111.2181.327.081.0210.832.95.10.940.850.453.88
    E10-13.84~5.889.2863.601.622.1110.832.23.840.990.910.454.37
    E10-27.8~9.5160.4997.2811.80.5410.832.27.80.990.710.64.55
    E112.3~5.774.0946.656.840.5910.831.22.31.050.990.66.73
    ZK244.5~6.097.7674.739.130.4910.832.94.50.940.880.65.35
    ZK255.5~7.5120.9373.899.080.5710.831.75.51.020.830.65.47
    E073.86~7.3100.9473.698.030.514.832.83.860.950.910.62.49
    E084.2~5.388.5583.1616.270.434.834.24.20.860.890.62.21
    E125.9~7.5123.1682.9810.880.674.832.65.90.960.810.62.24
    E134.4~5.592.2670.2111.540.584.832.74.40.950.880.62.43
    下载: 导出CSV
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  • 收稿日期:  2022-05-27
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