This readme file was generated on 2023-07-20 by David Perozzi GENERAL INFORMATION Title of Dataset: Tests on the earth pressure evolution acting on a model wall rotating about its base Author/Principal Investigator Information Name: David Perozzi ORCID: 0000-0001-8207-8394 Institution: ETH Zurich Address: Stefano-Franscini-Platz 5, CH-8093 Zurich Email: david.perozzi@igt.baug.ethz.ch Author/Associate or Co-investigator Information Name: Alexander M. Puzrin ORCID: 0000-0002-9566-8841 Institution: ETH Zurich Address: Stefano-Franscini-Platz 5, CH-8093 Zurich Email: alexander.puzrin@igt.baug.ethz.ch Date of data collection: data was collected on different days (each test lasted less than 12 hours) between 2018-10-18 and 2020-11-03 Geographic location of data collection: ETH Zurich, HIF C51 (Experimental Hall) Information about funding sources that supported the collection of the data: This work was supported by the Swiss Federal Roads Office and the Swiss Federal Office of Transport (research project AGB 2015/029). Acknowledgements: The authors would like to thank Ernst Bleiker, Dr. Balz Friedli, Andreas Kieper, and René Rohr (Institute for Geotechnical Engineering, ETH Zurich) for their valuable assistance in designing and building the test setup; Jonas Naegeli and Lukas Meier (master’s students, ETH Zurich) and Julien Gallacchi (Institute for Geotechnical Engineering, ETH Zurich) for their help in calibrating and running the experiments. SHARING/ACCESS INFORMATION Licenses/restrictions placed on the data: Creative Commons Attribution 4.0 International (CC-BY) http://creativecommons.org/licenses/by/4.0/ Links to publications that cite or use the data: * Perozzi, D. and Puzrin A.M. (2023). Experimental study on the displacement-dependent earth pressure on a wall rotating about its base. Submitted to Journal of Geotechnical and Geoenvironmental Engineering * Perozzi, D. (2022) Quantification of the earth pressure acting on corrosion-damaged cantilever retaining walls: An analysis of the soil-structure interaction. Doctoral thesis. ETH Zurich. Available at: https://doi.org/10.3929/ethz-b-000591353. Links to other publicly accessible locations of the data: This dataset is not publicly accessible at any other location. Links/relationships to ancillary data sets: None Was data derived from another source? No Recommended citation for this dataset: Perozzi, D. and Puzrin, A.M. (2023) ‘Tests on the earth pressure evolution acting on a model wall rotating about its base’. ETH Research Collection. Available at: https://doi.org/10.3929/ethz-b-000623124. DATA & FILE OVERVIEW File List: - summary.csv : Summarizing table containing basic data about each test - test_C[XYZ].csv : Experimental results for test [XYZ] Are there multiple versions of the dataset? No METHODOLOGICAL INFORMATION Description of methods used for collection/generation of data: - Experimental tests on the displacement-dependent earth pressure acting on a wall rotating about its base under different intial conditions. The methodology is described in: * Perozzi, D. and Puzrin A.M. (2023). Experimental study on the displacement-dependent earth pressure on a wall rotating about its base. Submitted to Journal of Geotechnical and Geoenvironmental Engineering * Perozzi, D. (2022) Quantification of the earth pressure acting on corrosion-damaged cantilever retaining walls: An analysis of the soil-structure interaction. Doctoral thesis. ETH Zurich. Available at: https://doi.org/10.3929/ethz-b-000591353. - Additional data on the soil mechanical behavior can be found in: * Perozzi, D. (2022) Quantification of the earth pressure acting on corrosion-damaged cantilever retaining walls: An analysis of the soil-structure interaction. Doctoral thesis. ETH Zurich. Available at: https://doi.org/10.3929/ethz-b-000591353. Methods for processing the data: - The data in this dataset mainly consists of raw data. The moment and rotation were calculated based on off-axis measurements according to the procedure described in: * Perozzi, D. and Puzrin A.M. (2023). Experimental study on the displacement-dependent earth pressure on a wall rotating about its base. Submitted to Journal of Geotechnical and Geoenvironmental Engineering Instrument- or software-specific information needed to interpret the data: No specific software is necessary to interpret the data. It is formatted in a standard .csv file and can be opened and interpreted using common spreadsheet or data analysis software, such as Microsoft Excel or Pandas in Python. Describe any quality-assurance procedures performed on the data: 1. Verification and Validation: Each measurement, was subjected to cross-verification with independent measurements after collection. This was facilitated by the redundant nature of the measuring system, ensuring accuracy and consistency. 2. Test Repeatability: Tests exhibiting similar or identical initial conditions were conducted. This enabled cross-validation of results, further bolstering data reliability and consistency. People involved with sample collection, processing, analysis and/or submission: 1. David Perozzi: Responsible for the majority of tasks including sample collection, processing, and data analysis. Also handled the submission of the data. 2. Lukas Meier: Assisted in running the tests and calibrating the setup. Contributed to the data gathering process through test execution and observation. 3. Julien Gallacchi: Assisted in running the tests. Contributed to the data gathering process through test execution and observation. 4. Alexander M. Puzrin: Provided overall supervision. Oversaw all stages of the data collection, processing, analysis, and submission. DATA-SPECIFIC INFORMATION FOR: summary.csv Number of variables: 6 Number of cases/rows: 8 Variable List: Test name: Corresponds to the specific test name as referenced in the associated literature linked to this dataset. Soil relative density after deposition [%]: The relative density of the soil immediately following the deposition of an individual layer. Defined according to ASTM D4253-16. Soil unit density [kg/m^3]: Soil unit density immediately following the deposition of an individual layer. Filename: The specific file name within this dataset that corresponds to the respective test. Date of collection: The exact date when the test was conducted. Lab temperature fluctuation [°C]: Difference between the minimum and maximum lab temperature recorded in the vicinity of the wall during the complete execution of a test. DATA-SPECIFIC INFORMATION FOR: test_C[XYZ].csv Number of variables: 11 Number of cases/rows: Variable Variable List: Test_stage: Denotes the phase of the test during which data were collected. This includes the following possible stages: * Filling: This refers to the backfill stage, characterized by incremental deposition of the test soil (by air pluviation). * Rotation: This refers to the stage where all wall sections were rotated (or only the central section in tests C7D3d and C8L3d). Stage_ID: Represents the cumulative count of the stages. The filling stage includes six or more steps (layers), while the rotation stage consists of a single step. The ID resets to zero at the conclusion of the filling stage. Cum_ID: Refers to the ongoing count of the measurements taken during a test, which never resets. t [s]: Denotes the cumulative duration of the test. It is continuous and excludes the preparation time (typically 15-30 minutes) required before each filling step. rot [mrad]: Rotation of the wall measured at the axle (i.e. at the wall base). mom [N]: Moment per running meter acting on the wall measured at the axle (i.e. at the wall base). w_mid [mm]: The deflection measurement at the middle of the wall (no rotational displacement component!). The precise measurement point from the top edge of the wall foundation is 253 mm. w_top [mm]: The deflection measurement at the top of the wall (no rotational displacement component!). The precise measurement point from the top edge of the wall foundation is 488 mm. h_soil [m]: This measurement represents the total thickness of the backfill at the conclusion of the current filling stage, with the height measured above the top edge of the wall foundation plate. pressure [kPa]: Normal pressure against the wall, gathered from 8 pressure cells, each identified by a unique number from 0 to 7. Please note, in tests C1L, C2D, and C3L, pressure cell 7 was non-functional. pcells_loc [mm]: Location of each pressure cell (0-7) for each test, measured from the top edge of the foundation plate of the wall. Specialized formats or other abbreviations used: * Measurements for rotation, moment, and wall deflections were obtained for each distinct wall section. These are denoted as 'a', 'b' (central section), and 'c', as referred to in the associated literature. Notably, measurements for sections 'a' and 'c' may be influenced by boundary effects, while plane strain conditions are present behind section 'b' in tests C1L through C6Dc. * Pressure cells were exclusively positioned in the central wall section, each identifiable by a unique integer (0-7). Further information: The data contained in these files can be opened and interpreted using common spreadsheet or data analysis software, such as Microsoft Excel or Pandas in Python. Using Pandas, one can import and plot the results as in the following: import matplotlib.pyplot as plt import pandas as pd # Import data fname = "test_C5Lc.csv" test_results = pd.read_csv(fname, header=list(range(2)), index_col=list(range(3))) # Plot moment vs. rotation plt.figure() plt.plot(test_results.loc["rotation", ("rot", "b")], test_results.loc["rotation", ("mom", "b")]) # Plot pressure distribution plt.figure() plt.plot(test_results.loc["rotation", "pressure"].values[0, :], test_results.loc["rotation", "pcells_loc"].values[0, :])