计算值与监测值对比是衡量重构应力场是否准确的重要指标。本数据集为三峡泄2#重点部位（如坝踵）应力的重构计算值与实际监测值的过程线对比，包含竖向应力的监测值和计算值。\n
数据集包含一个xlsx文件，第一列为日期，第二列为竖向应力监测值（Mpa），第三列为竖向应力计算值（Mpa）。", "ds_source": "
重构计算值主要通过构建精细化有限元仿真模型、准确反演边界条件和材料参数荷载、仿真计算得到，实际监测值主要根据无应力计和五向应变计监测值、采用增量法并编程计算得到，以相同日期起点及应力状态进行过程线对比。", "ds_process_way": "
（1）重构计算值主要采用有限元软件SAPTIS，算法来源为有限元基本理论、朱伯芳院士相关著作、软件说明书等；\n
（2）实际监测值主要来源于坝踵部位埋设的无应力计和五向应变计监测成果，测值转换成单轴应变时采用平面应变法，应变转换成应力时采用增量法，上述过程通过编程处理；
（3）以2015年正常蓄水位时节点为基准，将得到的应力计算值和监测值插值成相同时步的时间序列。\n
（4）绘制对比过程线，直观体现误差对比情况，最终误差均小于10%，满足指标要求。", "ds_quality": "
该数据可为准确把握大坝工作性态提供可靠数据支持。仿真计算值经反馈验证，应力云图分布规律符合常识，与实际测值相符，模型校核准确；所获取的监测数据均为原始监测数据，经粗差识别并剔除异常值，再进行应力计算；绘制过程线对比前，先选取相同的时间状态基准，进行同时步插值归一，最终用于误差对比。误差结果小于10%", "ds_acq_start_time": "2015-01-01 00:00:00", "ds_acq_end_time": "2021-12-30 00:00:00", "ds_acq_place": "三峡大坝", "ds_acq_lon_east": 111.02, "ds_acq_lat_south": 30.4, "ds_acq_lon_west": 110.15, "ds_acq_lat_north": 31.1, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 199074, "ds_files_count": 2, "ds_format": "*.xlsx", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "7dda48b5-a13e-4aaa-bdc4-12fa64b6263c.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "973f338d-7fd4-4c6f-aab1-44a5c242d419", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "410" ], "quality_level": 3, "publish_time": "2025-05-29 18:14:11", "last_updated": "2025-05-29 18:14:11", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NHRI_DAM.DB6856.2025", "i18n": { "en": { "title": "The dataset comparing the calculated and monitored vertical stress values at the heel of the 2# flood discharge dam section of the Three Gorges Dam after 2015.", "ds_format": "*.xlsx", "ds_source": "
The reconstruction calculation values are mainly obtained through the construction of a refined finite element simulation model, accurate inversion of boundary conditions and material parameter loads, and simulation calculations. The actual monitoring values are mainly obtained based on the monitoring values of stress free gauges and five directional strain gauges, using incremental methods and programmed calculations. The process lines are compared with the starting point and stress state of the same period.", "ds_quality": "
This data can provide reliable data support for accurately grasping the working behavior of dams. The simulated calculation values have been verified through feedback, and the distribution pattern of stress cloud maps conforms to common sense, matches the actual measured values, and the model verification is accurate; The monitoring data obtained are all original monitoring data, which have been subjected to gross error identification and outlier removal before stress calculation; Before drawing process lines for comparison, select the same time state benchmark, perform simultaneous step interpolation normalization, and finally use it for error comparison. The error result is less than 10%", "ds_ref_way": "", "ds_abstract": "
The comparison between calculated values and monitored values is an important indicator for measuring the accuracy of the reconstructed stress field. This dataset is a comparison of the reconstructed calculated values and actual monitoring values of stress in the key areas of Three Gorges Dam 2 # (such as the dam heel), including the monitoring and calculated values of vertical stress.\n
The dataset contains an xlsx file, with the first column being the date, the second column being the vertical stress monitoring values (Mpa), and the third column being the calculated vertical stress values (Mpa).
", "ds_time_res": "", "ds_acq_place": "Three Gorges Dam", "ds_space_res": "", "ds_projection": "", "ds_process_way": "(1) The reconstruction calculation values mainly use the finite element software SAPTIS, and the algorithm sources are the basic theory of finite element, relevant works of Academician Zhu Bofang, software manuals, etc;\n
(2) The actual monitoring values mainly come from the monitoring results of stress free gauges and five directional strain gauges buried at the dam heel. When converting the measured values into uniaxial strain, the plane strain method is used, and when converting strain into stress, the incremental method is used. The above process is processed through programming;
(3) Using the normal water level node in 2015 as a reference, interpolate the obtained stress calculation values and monitoring values into a time series with the same time step.\n
(4) Draw a comparison process line to visually reflect the comparison of errors. The final errors are all less than 10%, meeting the requirements of the indicators.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "坝踵应力", "有限元仿真", "监测" ], "ds_subject_tags": [ "工程与技术科学基础学科" ], "ds_class_tags": [], "ds_locus_tags": [ "中国", "三峡大坝" ], "ds_time_tags": [ 2015, 2016, 2017, 2018, 2019, 2020, 2021 ], "ds_contributors": [ { "true_name": "江晨芳", "email": "jiang.chenfang@163.com", "work_for": "中国水利水电科学研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "江晨芳", "email": "jiang.chenfang@163.com", "work_for": "中国水利水电科学研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "江晨芳", "email": "jiang.chenfang@163.com", "work_for": "中国水利水电科学研究院", "country": "中国" } ], "category": "其他" }