上机作业
作业内容 基坑监测数据处理
专 业 勘查技术与工程
班级学号 1803100115
姓 名 李耀明
南京工业大学交通学院
二〇一三年五月
一﹑题目要求
根据现场监测得到的建筑物沉降、桩身水平位移和支撑轴力监测数据,利用相关软件绘制建筑物沉降时程曲线、桩身水平位移随深度变化曲线、以及支撑轴力时程曲线。
二﹑试验数据
1.建筑物沉降监测数据
沉降监测数据一览表 表1
| 监测时间 | 沉降监测测点(mm) | |||
| F1 | F21 | F2 | F22 | |
| 1996-10-17 | 0.32 | 0.19 | -- | 0.11 |
| 1996-10-20 | 0.41 | 0.46 | -- | 0.31 |
| 1996-10-24 | 0.69 | 0.58 | -- | 0.43 |
| 1996-10-31 | 0.81 | 0.58 | 0.36 | 0.43 |
| 1996-11-10 | 1.24 | 2.27 | 2.68 | 1.52 |
| 1996-11-19 | 1.33 | 6.01 | 4.28 | 3.10 |
| 1996-11-24 | 1.56 | 6.71 | 6.30 | 3.76 |
| 1996-11-28 | 1.84 | 6.88 | 7.28 | 4.05 |
| 1996-12-1 | 1.83 | 7.09 | 7.62 | 4.10 |
| 1996-12-5 | 1.66 | 7.23 | 7.93 | 4.15 |
| 1996-12-8 | 1.77 | 7.42 | 8.05 | 4.12 |
| 1996-12-12 | 2.10 | 7.55 | 8.18 | 4.22 |
| 1996-12-15 | 2.23 | 7.84 | 8.51 | 4.31 |
| 1996-12-20 | 2.31 | 8.67 | 9.32 | 4.51 |
| 1996-12-22 | 2.54 | 9.77 | 10.41 | 4.69 |
| 1996-12-26 | 3.41 | 11.63 | 14.18 | 5.34 |
| 1996-12-29 | 3.83 | 11.61 | 16.27 | 5.57 |
| 1997-1-2 | 4.25 | 12.71 | 17.41 | 6.70 |
| 1997-1-5 | 5.58 | 13.57 | 18.42 | 8.16 |
| 1997-1-9 | 5.92 | 13.93 | 18.87 | 8.66 |
| 1997-1-12 | 7.36 | 14. | 20.46 | 9.24 |
| 1997-1-16 | 7.84 | 14. | 21.29 | 9.24 |
| 1997-1-19 | 8.23 | 15.70 | 22.11 | 10.08 |
| 1997-1-22 | 7.91 | 16.78 | 22.57 | 10.78 |
| 1997-1-26 | 8.71 | 16.78 | 23.31 | 10.78 |
| 1997-1-30 | 8.94 | 17.73 | 23.31 | 11.66 |
| 1997-2-2 | 9.59 | 19.08 | -- | 12.21 |
| 1997-2-10 | 9.88 | 19.82 | -- | 12.42 |
| 1997-2-12 | 9.88 | 19.82 | -- | 12.42 |
| 1997-3-1 | 13.13 | 20.23 | -- | 13.12 |
| 1997-3-3 | 14.30 | 25.68 | -- | 16.03 |
| 1997-3-7 | 27.97 | 34.63 | 40.08 | 25.84 |
| 1997-3-9 | 35.98 | 37.10 | 42.53 | 28.54 |
| 1997-3-10 | 38.93 | 38.53 | 46.04 | 29.38 |
| 1997-3-11 | 40.66 | 40.10 | 49.30 | 30.47 |
| 1997-3-12 | 41.60 | 41.35 | 51.60 | 31.30 |
| 1997-3-13 | 42.63 | 42.09 | 52. | 31.50 |
| 1997-3-14 | 42.85 | 42. | 53.23 | 32.02 |
| 1997-3-15 | 43.92 | 43.57 | 56.19 | 32.70 |
| 1997-3-16 | 44.67 | 44.21 | 56.83 | 32.93 |
| 1997-3-17 | 45.36 | 44.94 | 57.44 | 33.45 |
| 1997-3-18 | 45.18 | 45.13 | 58.09 | 33.44 |
| 1997-3-19 | 46.18 | 45.50 | 59.22 | 33.79 |
| 1997-3-20 | 46.55 | 45.92 | 59.68 | 33.90 |
| 1997-3-22 | 47.35 | 45.94 | 61.23 | 34.02 |
| 1997-3-23 | 47.82 | 46.10 | 61.71 | 34.03 |
| 1997-3-24 | 48.10 | 46.71 | 62.19 | 34.32 |
| 1997-3-26 | 48.29 | 46.79 | 62.63 | 34.44 |
| 1997-3-27 | 48.31 | 46.76 | 62. | 34.39 |
| 1997-3-29 | 48.20 | 46.58 | 63.11 | 34.25 |
| 1997-3-30 | 48.94 | 46.66 | 63. | 34.16 |
| 1997-3-31 | 49.05 | 46.78 | .23 | 34.15 |
| 1997-4-2 | 49.12 | 47.22 | .74 | 34.73 |
| 1997-4-5 | 50.01 | 48.08 | 65.42 | 35.75 |
| 1997-4-6 | 49.96 | 48.45 | 65.61 | 35.79 |
| 1997-4-9 | 49.96 | 48.54 | 65.88 | 35.62 |
| 1997-4-13 | 50.67 | 48.46 | 66. | 35.41 |
| 1997-4-17 | 50.65 | 48.80 | 67.18 | 35.59 |
| 1997-4-20 | 52.24 | 48.58 | 68.24 | 36.15 |
| 1997-4-27 | 52.42 | 48.39 | 68.52 | 36.63 |
| 1997-5-4 | 52.56 | 49.42 | 69.72 | 37.09 |
| 1997-5-11 | 53.52 | 49.58 | 70.85 | 37.41 |
| 1997-5-18 | 54.78 | 50.81 | 72.19 | 37.70 |
| 1997-5-22 | 56.00 | 51.31 | 73.90 | 38.09 |
| 1997-5-24 | 56.20 | 51.60 | 74.40 | 37.45 |
| 1997-5-25 | 56.37 | 74.17 | ||
| 1997-5-26 | 56.17 | 73.91 | ||
| 1997-5-27 | 56.66 | 73.61 | ||
| 1997-5-28 | 56.96 | 74.08 | ||
| 1997-5-29 | 57.25 | 74.53 | ||
| 1997-5-30 | 57.35 | 74.68 | ||
| 1997-5-31 | 57.61 | 76.01 | ||
| 1997-6-2 | 58.00 | 76.16 | ||
| 1997-6-4 | 57.87 | 76.50 | ||
| 1997-6-11 | 59.18 | 77.11 | ||
| 1997-6-22 | 58.85 | 77.19 | ||
| 1997-7-11 | 59.59 | 78.26 |
桩身水平位移监测数据一览表 表2
| A1测斜管桩身水平位移监测数据(mm) | |||||
| 深度(m) | 1996.11.24 | 1996.12.22 | 1996.12.26 | 1997.1.20 | 1997.3.30 |
| 6.45 | 19.31 | 22.9 | 61.75 | 86.32 | |
| 0.5 | 6.19 | 18.68 | 22.21 | 62.72 | 86.26 |
| 1 | 6.02 | 18.1 | 21.84 | 63.98 | 86.71 |
| 1.5 | 6.67 | 19.36 | 23.63 | 67.23 | 88.8 |
| 2 | 7.27 | 19.98 | 23.41 | 66.33 | 87.72 |
| 2.5 | 6.99 | 19.3 | 23.56 | 62.67 | 83.24 |
| 3 | 6.62 | 18.88 | 23.01 | 59.73 | 79.19 |
| 3.5 | 6.26 | 17.9 | 21.84 | 57.05 | 76.02 |
| 4 | 5.91 | 16.38 | 20.04 | 52.57 | 71.23 |
| 4.5 | 5.78 | 14.24 | 17.68 | 47. | 65.84 |
| 5 | 5.07 | 11.32 | 14.72 | 42.04 | 59.07 |
| 5.5 | 4.73 | 9.44 | 12.75 | 37.32 | 53.56 |
| 6 | 4.94 | 8.33 | 11.21 | 33.7 | 48.66 |
| 6.5 | 5.01 | 7.45 | 9.93 | 29.69 | 43.73 |
| 7 | 4.34 | 6.04 | 8.3 | 25.46 | 38.18 |
| 7.5 | 4.24 | 5.31 | 7.12 | 21.01 | 33.6 |
| 8 | 3.78 | 4.36 | 5.98 | 17.87 | 28.51 |
| 8.5 | 3.48 | 3.16 | 4.62 | 14 | 23.8 |
| 9 | 3.35 | 2.92 | 4.39 | 10.62 | 19.09 |
| 9.5 | 3.05 | 2.06 | 3.27 | 8.04 | 15.61 |
| 10 | 2. | 1.18 | 1.72 | 4.47 | 11.42 |
| 10.5 | 2.32 | 0.69 | 0.52 | 2.04 | 7.7 |
| 11 | 2.04 | 0.43 | -0.11 | 0.37 | 4.62 |
| 11.5 | 1.66 | 0.02 | -1.12 | -2.34 | 0.95 |
| 12 | 1.33 | -0.09 | -1.53 | -3.76 | -1.27 |
| 12.5 | 1.03 | -0.28 | -1.53 | -4.09 | -1.85 |
| 13 | 0.71 | -0.13 | -0.82 | -3.7 | -1.87 |
| 13.5 | 0.49 | -0.06 | -0.58 | -2.88 | -1.85 |
| 14 | 0.34 | 0.22 | -0.09 | -2.09 | -1.27 |
| 14.5 | 1996.11.24 | 1996.12.22 | 1996.12.26 | 1997.1.20 | 1997.3.30 |
支撑轴力监测数据一览表 表3
| 支撑轴力监测数据(kN) | ||||||
| 时间 | 监测点 | |||||
| J1 | J2 | J3 | J4 | J5 | J6 | |
| 1996-12-1 | 937 | 8 | 272 | |||
| 1996-12-5 | 676 | 1065 | 350 | |||
| 1996-12-8 | 1 | 8 | 448 | |||
| 1996-12-12 | 839 | 1430 | 1126 | |||
| 1996-12-15 | 834 | 1650 | 1296 | |||
| 1996-12-19 | 808 | 1537 | 1290 | |||
| 1996-12-22 | 853 | 1546 | 1151 | |||
| 1996-12-26 | 1195 | 1820 | 1148 | |||
| 1996-12-29 | 1236 | 2208 | 1169 | |||
| 1997-1-5 | 1147 | 1928 | 1109 | |||
| 1997-1-9 | 802 | 1571 | 1150 | |||
| 1997-1-12 | 850 | 1955 | 10 | |||
| 1997-1-16 | 1090 | 1811 | 1051 | |||
| 1997-1-19 | 942 | 1567 | 1092 | |||
| 1997-1-26 | 887 | 2803 | 918 | |||
| 1997-1-30 | 1284 | 2071 | 1033 | |||
| 1997-2-2 | 1081 | 2257 | 985 | |||
| 1997-2-4 | 0 | 1860 | 999 | |||
| 1997-2-10 | 1198 | 1919 | 1044 | |||
| 1997-2-14 | 1120 | 2143 | 739 | |||
| 1997-2-16 | 1367 | 2215 | 1225 | |||
| 1997-2-21 | 1319 | 2682 | 1130 | |||
| 1997-2-25 | 1599 | 2622 | 1216 | |||
| 1997-3-1 | 2182 | 2343 | 1597 | 1308 | 77 | 16 |
| 1997-3-7 | 1913 | 2900 | 1285 | 3496 | 8 | 48 |
| 1997-3-8 | 2134 | 3078 | 1504 | 4057 | 1491 | 698 |
| 1997-3-9 | 1959 | 2780 | 1298 | 3797 | 6 | 713 |
| 1997-3-10 | 2177 | 3195 | 1319 | 4113 | 1020 | 623 |
| 1997-3-12 | 1435 | 2660 | 884 | 3386 | 343 | 451 |
| 1997-3-13 | 1454 | 2638 | 1120 | 3482 | 383 | 457 |
| 1997-3-15 | 1318 | 2618 | 1106 | 3274 | 193 | 429 |
| 1997-3-16 | 1188 | 24 | 1073 | 3081 | 306 | 394 |
| 1997-3-19 | 1323 | 2474 | 1068 | 3458 | 370 | 451 |
| 1997-3-23 | 1407 | 2579 | 1336 | 4284 | 945 | 704 |
| 1997-3-26 | 1462 | 2715 | 1320 | 4325 | 1045 | 720 |
| 1997-3-30 | 2028 | 2965 | 1221 | 4602 | 1657 | 618 |
| 1997-4-5 | 1082 | 2493 | 1213 | 4180 | 748 | 678 |
| 1997-4-6 | 1039 | 2485 | 11 | 3967 | 676 | 661 |
| 1997-4-9 | 2170 | 3204 | 1381 | 4662 | 2239 | 767 |
| 1997-4-13 | 2484 | 3046 | 1307 | 4216 | 2382 | 878 |
| 1997-4-16 | 2583 | 3288 | 1508 | 6148 | 2886 | 1063 |
| 1997-4-17 | 2635 | 3445 | 1424 | 5954 | 2885 | 855 |
| 1997-4-18 | 2122 | 3340 | 1452 | 5441 | 2106 | 863 |
| 1997-4-20 | 2273 | 3318 | 1484 | 5497 | 2180 | 811 |
| 1997-4-27 | 2817 | 3734 | 1614 | 6212 | 2573 | 1011 |
| 1997-4-29 | 2817 | 3734 | 1570 | 7279 | 3554 | 1232 |
| 1997-4-30 | 3305 | 4286 | 1398 | 6932 | 3303 | 1083 |
| 1997-5-2 | 3306 | 4062 | 1623 | 6801 | 3321 | 1106 |
| 1997-5-4 | 3853 | 4132 | 1632 | 6952 | 3885 | 1301 |
| 1997-5-14 | 2977 | 3681 | 1530 | 6360 | 2804 | |
| 1997-5-18 | 3712 | 4053 | 1501 | 6590 | 3510 | |
| 1997-5-24 | 3715 | 3849 | 1468 | 07 | 3494 | |
1.建筑物沉降时程曲线
2.桩身水平位移随深度变化曲线
3.支撑轴力时程曲线
四﹑小结
从建筑物沉降时程曲线可以看出,在基坑开挖的前期,各监测点处的建筑物沉降缓慢增加,此时基坑的开挖对周围建筑物影响不大。到开挖中期,各测点处沉降明显增大,尤其是监测点F2,可能该测点离基坑较近或其基础埋深较浅,受基坑开挖影响较大。在此以后,可能是采取了有效的防治措施,各测点沉降大致缓慢增加。
从桩身水平位移随深度变化曲线可以看出,各测点的桩身水平位移逐渐减小。当深度大概为12m-14.5m这个范围时,桩身水平位移出现负值,这说明这段桩身可能受到支撑轴力作用或其上大半段桩身受主动土压力作用,而此段受被动土压力作用,而且随着开挖时间的增大,其桩身水平位移明显增大。
从支撑轴力时程曲线可以看出,所有测点的支撑轴力,随着时间的增加,大致都在增大。监测点J3几乎不变,说明此支撑可能在基坑底部。而监测点J4变化最大,说明该支撑点可能位于基坑桩身水平位移变化最大点处。
目录
一﹑题目要求 1
二﹑试验数据 1
1. 建筑物沉降监测数据 1
2. 桩身水平位移监测数据 3
3. 支撑轴力监测数据 4
三﹑监测结果曲线 5
1. 建筑物沉降时程曲线 5
2. 桩身水平位移随深度变化曲线 6
3. 支撑轴力时程曲线 6
四﹑小结 7下载本文