The soft foundation of the Xidao slope section of the Shenzhong Channel is treated with deep cement mixing piles. The thickness of the silt soil (including 1 layer of silt, 2 layers of silt, 3 layers of silty soil, and 2-4 layers of silt) below the bottom of the Xidao slope section tunnel is 3-18m, which is thicker than the silt layer of the Hong Kong Zhuhai Macao Bridge immersed tube tunnel. Due to sand mining disturbance, the in-situ cross plate strength of the 1 layer of silt is only 4.3-8.4kPa, which is a flowing silt. The maximum thickness of the layer of silt below the excavation line of the E1 pipe section foundation trench is 5m. The surface floating mud at the bottom of the trench needs to be excavated, and the floating mud on both sides of the foundation trench needs to be blocked from flowing into the trench to ensure that the trench can be formed. At the same time, the slope section of Xidao Island is located within the range of the sand pit, and from the comparison between the detailed survey and the preliminary survey, there are still changes in the strata inside the sand pit excavated from 2015 to 2017. The influence of silt and sand pit on the layout of DCM piles must be considered.
Data file DCM on-site in-situ test results and analysis of settlement distribution under various levels of load application. Two sets of experiments (Group A1 and Group A1) were designed to verify the settlement of each level of load through four level loading and four level unloading.
Experimental experiments.
The data quality is good.
| # | number | name | type |
| 1 | 2018YFC0809600 | National key R & D plan |
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.NCDC.NIEER.DB2818.2023
10.12072/ncdc.nieer.db2818.2023
