KUAT GESER TANAH Kuliah Mektan Tambang 20 Mei 2014

Download KUAT GESER TANAH Kuliah Mektan Tambang 20 Mei 2014

Post on 02-Dec-2015

236 views

Category:

Documents

21 download

DESCRIPTION

bahan pembelajaran

TRANSCRIPT

KUAT GESER TANAHKUAT GESER TANAH BERHUBUNGAN DENGAN :A. friksiB. Kohesi :- kohesi benar- Kohesi nyata- Harus hati-hati menggunakan kuat geser tanah dalamdesignPENGUJIAN LABORATORIUM UNTUK MENDAPATKANPARAMETER KUAT GESER :A. UJI KUAT TEKAN BEBAS (UNCONFINE COMP. STRENGHT)B. UJI GESER LANGSUNG (DIRECT SHEAR, SIMPLE SHEAR TEST)C. UJI TRIAXIALKUAT GESER TANAHA. Faktor mempengaruhi kuat geser pasir- Void ratio :KUAT GESER TANAH- Bentuk partikel:KUAT GESER TANAH-KUAT GESER TANAH-KUAT GESER TANAHUnconfined Compression TestKUAT GESER TANAHLABORATORIUM MEKANIKA TANAHFAKULTAS TEKNIKUNIVERSITAS LAMBUNG MANGKURATProyek : Perenc Teknis Jalan Lingkar Mabuun by pass Pemeriksa : Team SP.3 Mabuari Guru Danau (Lingkar dalam perkotaan) TabalongLokasi : Maburai Tanggal : 05 Mei 2007Sampel No. : B.I UNCONFINED COMPRESSION TESTUndisturbed SampelSampel Area : 17.712 cm2Sampel Length : 95.00 mmProving Ring No. : P-5Calibration, 0,480 : 0.256 kgArea17.712 0.000017.801 0.230117.891 0.672517.982 1.039318.073 1.274818.166 1.451518.260 1.584218.354 1.729518.450 1.845418.547 1.946218.644 2.045918.743 2.130718.843 2.214518.943 2.310919.045 2.406119.148 2.500119.252 2.579719.464 2.709419.680 2.848819.901 2.958620.127 3.090820.359 3.181320.595 3.244320.838 3.292421.086 3.314421.340 3.311021.600 3.259321.867 3.160922.1402.002.503.00Time0.000.501.00Strain S (%)1.505.506.006.507.003.504.004.505.0011.0012.0013.0014.007.508.009.0010.0019.0020.0020.0015.0016.0017.0018.000.0016.0047.0073.00Unconfined Compression (kg/cm2)Load P (Kg)P. Ring Dial 0,01 mm0.000113.00124.00133.00141.0090.00103.00179.00187.00194.00206.00149.00156.00163.00171.00261.00268.00273.00276.00219.00230.00243.00253.00275.00270.004.09612.03218.68823.04026.36828.92831.74441.72843.77645.82447.87234.04836.09638.14439.9363.003.5069.88870.65670.40069.12062.20864.76866.81668.6080.000.501.001.502.002.504.004.505.005.5049.66452.73656.06458.8808.009.0010.0011.006.006.507.007.5016.0017.0018.0019.0012.0013.0014.0015.00KUAT GESER TANAHLABORATORIUM MEKANIKA TANAHFAKULTAS TEKNIKUNIVERSITAS LAMBUNG MANGKURATProyek : Perenc Teknis Jalan Lingkar Mabuun by pass Pemeriksa : Team SP.3 Mabuari Guru Danau (Lingkar dalam perkotaan) TabalongLokasi : Maburai Tanggal : 08 November 2007Sampel No. : B.I UNCONFINED COMPRESSION TESTDisturbed SampelSampel Area : 17.712 cm2Sampel Length : 95.00 mmProving Ring No. : P-5Calibration, 0,480 : 0.256 kgArea17.712 0.000017.801 0.028817.891 0.042917.982 0.071218.073 0.113318.166 0.169118.260 0.210318.354 0.251118.450 0.277518.547 0.303718.644 0.350118.743 0.396118.843 0.421218.943 0.473019.045 0.564619.148 0.534819.252 0.505319.464 0.460319.680 0.390219.90120.12720.35920.59520.83821.08621.34021.60021.86722.140Time Strain S (%) P. Ring Dial 0,01 Load P Unconfined 0.00 0.00 0.00 0.0001.00 1.00 3.00 0.7680.50 0.50 2.00 0.5122.00 2.00 8.00 2.0481.50 1.50 5.00 1.2803.00 3.00 15.00 3.8402.50 2.50 12.00 3.0724.00 4.00 20.00 5.1203.50 3.50 18.00 4.6085.00 5.00 25.50 6.5284.50 4.50 22.00 5.6326.00 6.00 31.00 7.9365.50 5.50 29.00 7.4247.00 7.00 42.00 10.7526.50 6.50 35.00 8.9608.00 8.00 38.00 9.7287.50 7.50 40.00 10.24010.00 10.00 30.00 7.6809.00 9.00 35.00 8.96012.00 12.0011.00 11.0014.00 14.0013.00 13.0016.00 16.0015.00 15.0018.00 18.0017.00 17.0020.00 20.0019.00 19.00KUAT GESER TANAHLABORATORIUM MEKANIKA TANAHFAKULTAS TEKNIKUNIVERSITAS LAMBUNG MANGKURATProyek : Perenc Teknis Jalan Lingkar Mabuun by pass Pemeriksa : Team SP.3 Mabuari Guru Danau (Lingkar dalam perkotaan) TabalongLokasi : Maburai Tanggal : 05 Mei 2007Sampel No. : B.I UNCONFINED COMPRESSION TEST0.000.501.001.502.002.503.003.500.00 5.00 10.00 15.00 20.00qu (kg/cm2 )Strain (%)UNDISTURBED SAMPLE0.000.100.200.300.400.500.600.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 10.00qu (kg/cm2 )Strain (%)DISTURBED SAMPLEKUAT GESER TANAHKUAT GESER TANAHSENSITIVITAS = St = quundisturb/qu remoldedKUAT GESER TANAHUJI GESER LANGSUNG (DIRECT SHEAR TEST)KUAT GESER TANAHUJI GESER LANGSUNG (DIRECT SHEAR TEST)- BIDANG RUNTUH DATAR- CONFINING PRESSURE TIDAK TERKONTROL- TEKANAN AIR PORI TIDAK TERUKUR- UMUNYA DIGUNAKAN DIBATASI UNTUK TANAH PASIR DAN TANAHCOMPACTED- DIGUNAKAN UNTUK MENENTUKAN KUAT GESER INTERFACEKEUNTUNGAN UJI DIRECT SHEAR :A. Pengujian Direct Shear cepat dan murahB. Dapat digunakan untuk menentukan kuat geser tanah kohesif dan nonkohesifC. Bidang runtuh datar btidak sesuai kondisi sebenarnya.SAAT PENGUJIAN KECEPATAN GESER ANTARA 0,0025 mm/min s/d 1,0mm/minKUAT GESER TANAHUJI GESER LANGSUNG (DIRECT SHEAR TEST)KUAT GESER TANAHUJI GESER LANGSUNG (DIRECT SHEAR TEST)KUAT GESER TANAHUJI GESER LANGSUNG (DIRECT SHEAR TEST)KUAT GESER TANAHPERHITUNGAN :Sampel segi empat B x B :Ao = B x BF = Faktor koreksi = h/B h = horizontal displacementSampel bulat:cos-1(h/D) dalam Radian21 1cos2DhDhDhFKUAT GESER TANAHPERHITUNGAN :KUAT GESER TANAHDATA HASIL UJI DIRECT SHEAR :KUAT GESER TANAHLABORATORIUM MEKANIKA TANAHFAKULTAS TEKNIKUNIVERSITAS LAMBUNG MANGKURATProyek : Perenc Teknis Jalan Lingkar Mabuun by pass Pemeriksa : Team SP.3 Mabuari Guru Danau (Lingkar dalam perkotaan) TabalongLokasi : Maburai Tanggal : 05 Mei 2007Sampel No. : B.I Sampel Diameter = mm Proving Ring : 1155-2-3043Sampel Height = 20.00 mm Calibration : kg/10-4 cm1 = 1.28 kg/cm2 2 = 2.24 kg/cm2 3 = 3.20 kg/cm2menit mm kg/cm2 kg/cm2 kg/cm20.00 0.000 0.0000000 0.0000000 0.00000000.25 0.158 0.0721150 0.1081725 0.08241710.50 0.316 0.0875682 0.1648343 0.12877681.00 0.361 0.1236257 0.2266471 0.16483431.50 0.947 0.1648343 0.2884599 0.23179822.00 1.262 0.2266471 0.3296685 0.28845992.50 1.578 0.3502728 0.4223878 0.36057493.00 1.893 0.4429920 0.4738985 0.42238783.50 2.209 0.4893517 0.5254092 0.49450284.00 2.524 0.5563156 0.5975242 0.56661774.50 2.840 0.5563156 0.6387327 0.70054565.00 3.155 0.5563156 0.6696391 0.77266066.00 3.786 0.6696391 0.84992667.00 4.417 0.6696391 0.92719278.00 5.048 0.97870349.00 5.679 0.978703410.00 6.310 0.978703411.00 6.94112.00 7.57213.00 8.20314.00 8.83415.00 9.465DIRECT SHEAR TEST63.100.1610PROVING RING 0,0002 CMNORMAL STRESSTIME HORIZONTAL DEFORMATION NORMAL STRESS NORMAL STRESS0.007.008.5012.00PROVING RING 0,0002 CMPROVING RING 0,0002 CM16.0022.0034.0043.0041.0046.0051.0047.5054.0054.0054.000.0010.5016.0022.0028.0032.0035.0041.0065.0065.0065.000.008.0012.5016.0022.5028.0048.0055.0068.0075.0058.0062.0082.5090.0095.0095.0095.00KUAT GESER TANAHLABORATORIUM MEKANIKA TANAHFAKULTAS TEKNIKUNIVERSITAS LAMBUNG MANGKURATProyek : Perenc Teknis Jalan Lingkar Mabuun by pass Pemeriksa : Team SP.3 Mabuari Guru Danau (Lingkar dalam perkotaan) TabalongLokasi : Maburai Tanggal : 05 Mei 2007Sampel No.: B.I Sampel Diameter = mm Proving Ring : 1155-2-3043Sampel Height = 20.00 mm Calibration : kg/10-4 cmCkg/cm2 o0.20 18.00DIRECT SHEAR TEST63.100.16100.000.501.001.502.002.503.003.500.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50Horizontal Stress kg/cm2Axial Stress kg/cm2c = 0,20 kg/cm2= 18oKUAT GESER TANAHTRIAXIAL TEST :KEUNTUNGA :A. LEBIH SERBA GUNAB. DRAINASE DAPAT DIKONTROL SESUAI KONDISI LAPANGANC. BIDANG RUNTUH DIMANA SAJAD. TIDAK ADA ROTASI PRINSIPEL STRESS SEPERTI DIRECT SHEAR.KUAT GESER TANAHLINGKARAN MORH :JIKA C = 0cot231231sincffffcos2sin3131 cffffsin3131 ffffffff3131sinsin1sin131ffKUAT GESER TANAH2/45tansin1sin1321ff2/45tansin1sin1123ffKUAT GESER TANAH- triaxial test mengukur kuat geser tanah dengan drainase dapat dikontrol- Confining press bekerja pada selimut sampel.- Test disebut triaxial karena gaya bekerja pada 3 arah.- Selama test major principal stress 1 = confining pressure 3- Pada pengujian ini 3 tetap 1 bertamabah sebesar (diviator stress)- 2 = 3 ( confining pressure)KUAT GESER TANAHKUAT GESER TANAHKUAT GESER TANAHKUAT GESER TANAHTipikal hasil pengujian triaxial :KUAT GESER TANAHTipikal hasil pengujian triaxial :KUAT GESER TANAHTipikal hasil pengujian triaxial :KUAT GESER TANAHTipikal hasil pengujian triaxial :KUAT GESER TANAHTipikal hasil pengujian triaxial :KUAT GESER TANAHTipikal hasil pengujian triaxial :KUAT GESER TANAHTipikal hasil pengujian triaxial :PENGUJIAN KUAT GESER TANAHPengujian CD PENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHA = 0,5 1 untuk Lempung NCA = -0,5 0 nuntuk lempung OCPENGUJIAN KUAT GESER TANAHA = 0,5 1 untuk Lempung NCA = -0,5 0 nuntuk lempung OCPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPERHITUNGAN:Ho = Ho - HHo = tinggi sampel awalH = perobahan tinggiPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHu1'1'1PENGUJIAN KUAT GESER TANAHTable 1: Sample 1 Data Sample 1 v Ac Ac d u 3 1 ' 1 ' 3 p p' q (%) (in2) (ft2) (psf) (psf) A-bar (psf) (psf) (psf) (psf) (psf) (psf) (psf) 0 6.069871 0.042152 0 0 -- 1440 1440 1440 1440 1440 1440 0 0.000495 6.072877 0.042173 151.5196 54.72 0.361141 1440 1591.52 1536.8 1385.28 1515.76 1461.04 75.75981 0.001007 6.075989 0.042194 271.3632 106.56 0.392684 1441 1712.363 1605.803 1334.44 1576.682 1470.122 135.6816 0.001502 6.079 0.042215 416.2 178.56 0.429024 1442 1858.2 1679.64 1263.44 1650.1 1471.54 208.1 0.001997 6.082014 0.042236 515.908 241.92 0.468921 1443 1958.908 1716.988 1201.08 1700.954 1459.034 257.954 0.002509 6.085136 0.042258 595.3918 295.2 0.495808 1444 2039.392 1744.192 1148.8 1741.696 1446.496 297.6959 0.003003 6.088156 0.042279 658.2485 345.6 0.52503 1445 2103.249 1757.649 1099.4 1774.124 1428.524 329.1243 0.003498 6.09118 0.0423 707.0945 387.36 0.547819 1446 2153.095 1765.735 1058.64 1799.547 1412.187 353.5473 0.003993 6.094206 0.042321 758.2546 426.24 0.562133 1447 2205.255 1779.015 1020.76 1826.127 1399.887 379.1273 0.004505 6.09734 0.042343 795.6518 459.36 0.577338 1448 2243.652 1784.292 988.64 1845.826 1386.466 397.8259 0.005 6.100373 0.042364 832.7884 491.04 0.589634 1449 2281.788 1790.748 957.96 1865.394 1374.354 416.3942 0.005495 6.103409 0.042385 867.0565 519.84 0.599546 1450 2317.056 1797.216 930.16 1883.528 1363.688 433.5282 0.006007 6.106552 0.042407 897.9732 545.76 0.607769 1451 2348.973 1803.213 905.24 1899.987 1354.227 448.9866 0.006502 6.109594 0.042428 925.8095 568.8 0.614381 1452 2377.809 1809.009 883.2 1914.905 1346.105 462.9047 0.006997 6.112639 0.042449 953.6176 590.4 0.619116 1453 2406.618 1816.218 862.6 1929.809 1339.409 476.8088 0.007509 6.115792 0.042471 975.0234 610.56 0.6262 1454 2429.023 1818.463 843.44 1941.512 1330.952 487.5117 0.008003 6.118843 0.042492 1001.601 629.28 0.628274 1455 2456.601 1827.321 825.72 1955.801 1326.521 500.8006 0.008498 6.121897 0.042513 1021.095 646.56 0.633202 1456 2477.095 1830.535 809.44 1966.548 1319.988 510.5476 0.008993 6.124954 0.042534 1042.45 662.4 0.635426 1457 2499.45 1837.05 794.6 1978.225 1315.825 521.2251 0.009505 6.12812 0.042556 1060.71 678.24 0.639421 1458 2518.71 1840.47 779.76 1988.355 1310.115 530.3552 PENGUJIAN KUAT GESER TANAHTable 1: Sample 2 Data Sample 2 v Ac Ac d u 3 1 ' 1 ' 3 p p' q (%) (in2) (ft2) (psf) (psf) A-bar (psf) (psf) (psf) (psf) (psf) (psf) (psf) 0 6.157522 0.042761 0 0 -- 2880 2880 2880 2880 2880 2880 0 0.000498 6.160591 0.042782 268.5716 105.12 0.391404 2880 3148.572 3043.452 2774.88 3014.286 2909.166 134.2858 0.000997 6.163664 0.042803 547.1551 228.96 0.418455 2880 3427.155 3198.195 2651.04 3153.578 2924.618 273.5775 0.001495 6.16674 0.042825 733.6907 336.96 0.459267 2880 3613.691 3276.731 2543.04 3246.845 2909.885 366.8454 0.001993 6.169819 0.042846 874.7615 437.76 0.500434 2880 3754.762 3317.002 2442.24 3317.381 2879.621 437.3808 0.002509 6.173007 0.042868 1002.144 531.36 0.530223 2880 3882.144 3350.784 2348.64 3381.072 2849.712 501.0718 0.003007 6.176092 0.04289 1106.097 614.88 0.5559 2880 3986.097 3371.217 2265.12 3433.049 2818.169 553.0487 0.003505 6.179181 0.042911 1188.507 689.76 0.580358 2880 4068.507 3378.747 2190.24 3474.254 2784.494 594.2536 0.004003 6.182272 0.042932 1268.505 761.76 0.600518 2880 4148.505 3386.745 2118.24 3514.252 2752.492 634.2523 0.004502 6.185366 0.042954 1335.617 826.56 0.61886 2880 4215.617 3389.057 2053.44 3547.808 2721.248 667.8085 0.005498 6.191565 0.042997 1463.359 947.52 0.647497 2880 4343.359 3395.839 1932.48 3611.679 2664.159 731.6794 0.005997 6.194668 0.043019 1516.323 997.92 0.658118 2880 4396.323 3398.403 1882.08 3638.162 2640.242 758.1617 0.006495 6.197775 0.04304 1565.517 1044 0.666873 2880 4445.517 3401.517 1836 3662.758 2618.758 782.7583 0.006993 6.200885 0.043062 1612.338 1088.64 0.675194 2880 4492.338 3403.698 1791.36 3686.169 2597.529 806.1688 0.007509 6.204106 0.043084 1655.368 1130.4 0.682869 2880 4535.368 3404.968 1749.6 3707.684 2577.284 827.6842 0.008007 6.207222 0.043106 1695.367 1169.28 0.689691 2880 4575.367 3406.087 1710.72 3727.684 2558.404 847.6835 0.008505 6.210342 0.043127 1731.383 1205.28 0.696137 2880 4611.383 3406.103 1674.72 3745.692 2540.412 865.6915 0.009003 6.213464 0.043149 1767.362 1236.96 0.699891 2880 4647.362 3410.402 1643.04 3763.681 2526.721 883.681 0.009502 6.21659 0.043171 1796.355 1270.08 0.707032 2880 4676.355 3406.275 1609.92 3778.177 2508.097 898.1773 PENGUJIAN KUAT GESER TANAHTable 1: Sample 3 Data Sample 3 v Ac Ac d u 3 1 ' 1 ' 3 p p' q (%) (in2) (ft2) (psf) (psf) A-bar (psf) (psf) (psf) (psf) (psf) (psf) (psf) 0 6.201582 0.043067 0 0 -- 5425.92 5425.92 5425.92 5425.92 5425.92 5425.92 0 0.0005 6.204685 0.043088 523.1144 138.24 0.264263 5425.92 5949.034 5810.794 5287.68 5687.477 5549.237 261.5572 0.001 6.20779 0.04311 996.9925 313.92 0.314867 5425.92 6422.912 6108.992 5112 5924.416 5610.496 498.4962 0.0015 6.210899 0.043131 1354.934 491.04 0.362409 5425.92 6780.854 6289.814 4934.88 6103.387 5612.347 677.4672 0.002 6.21401 0.043153 1632.105 662.4 0.405856 5425.92 7058.025 6395.625 4763.52 6241.973 5579.573 816.0527 0.0025 6.217125 0.043174 1864.991 829.44 0.444742 5425.92 7290.911 6461.471 4596.48 6358.415 5528.975 932.4953 0.003 6.220243 0.043196 2056.897 984.96 0.478857 5425.92 7482.817 6497.857 4440.96 6454.369 5469.409 1028.449 0.0035 6.223364 0.043218 2225.009 1133.28 0.509337 5425.92 7650.929 6517.649 4292.64 6538.424 5405.144 1112.504 0.004 6.226488 0.04324 2362.886 1258.56 0.532637 5425.92 7788.806 6530.246 4167.36 6607.363 5348.803 1181.443 0.0045 6.229616 0.043261 2496 1383.84 0.554423 5425.92 7921.92 6538.08 4042.08 6673.92 5290.08 1248 0.005 6.232746 0.043283 2609.11 1497.6 0.573989 5425.92 8035.03 6537.43 3928.32 6730.475 5232.875 1304.555 0.0055 6.23588 0.043305 2717.948 1608.48 0.591799 5425.92 8143.868 6535.388 3817.44 6784.894 5176.414 1358.974 0.006 6.239017 0.043327 2814.905 1709.28 0.607225 5425.92 8240.825 6531.545 3716.64 6833.373 5124.093 1407.453 0.0065 6.242156 0.043348 2911.071 1804.32 0.619813 5425.92 8336.991 6532.671 3621.6 6881.455 5077.135 1455.535 0.007 6.2453 0.04337 2990.998 1893.6 0.6331 5425.92 8416.918 6523.318 3532.32 6921.419 5027.819 1495.499 0.0075 6.248446 0.043392 3066.926 1977.12 0.644659 5425.92 8492.846 6515.726 3448.8 6959.383 4982.263 1533.463 0.008 6.251595 0.043414 3142.084 2054.88 0.653986 5425.92 8568.004 6513.124 3371.04 6996.962 4942.082 1571.042 0.0085 6.254748 0.043436 3207.957 2125.44 0.662553 5425.92 8633.877 6508.437 3300.48 7029.898 4904.458 1603.978 0.009 6.257904 0.043458 3265.017 2194.56 0.672144 5425.92 8690.937 6496.377 3231.36 7058.428 4863.868 1632.508 0.0095 6.261063 0.04348 3327.077 2257.92 0.67865 5425.92 8752.997 6495.077 3168 7089.459 4831.539 1663.539 PENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAHPENGUJIAN KUAT GESER TANAH

Recommended

View more >