{ "created": "2022-11-23 15:36:46", "updated": "2026-04-29 00:47:55", "id": "aa70421d-f73f-4ddb-99e1-dff2ef69d992", "version": 5, "ds_topic": null, "title_cn": "强度参数与内变量的关系分析数据集", "title_en": "Analysis data set of relationship between strength parameters and internal variables", "ds_abstract": "

   随着材料技术的发展，高强混凝土在沉管、水下和深埋隧道中得到广泛应用，在各种应力条件下呈现出弹性、脆性和塑性状态。然而，对高强混凝土本构模型的研究还不够，尤其是弹塑性耦合性能。\n

   该数据集通过常规的三轴压缩试验和循环载荷试验对高强混凝土进行弹塑性耦合分析，并利用声发射 (AE) 技术监测加载过程中混凝土的破坏过程和相关的微开裂行为；最后定义围应力函数和塑性内变量，分析了变形参数和强度参数随塑性内变量的变化。（1）随着塑性内变量的增加，内聚力减小，内摩擦角逐渐增大。（2）基于Mohr-Coulomb屈服准则，提出了一种改进的内聚弱化-摩擦强化(CWFS)模型。（3）混凝土的膨胀角小于内摩擦角，高强混凝土弹塑性耦合模型应采用非关联流动规则。（4）根据试验结果建立弹塑性耦合模型，为数值计算和工程应用提供实验和理论依据。", "ds_source": "

  数据来源于试验测量。", "ds_process_way": "

  通过常规的三轴压缩试验和循环载荷试验对高强混凝土进行弹塑性耦合分析，并利用声发射(AE)技术监测加载过程中混凝土的破坏过程和相关的微开裂行为；最后定义围应力函数和塑性内变量，分析了变形参数和强度参数随塑性内变量的变化。", "ds_quality": "

  数据质量良好。", "ds_acq_start_time": "2020-05-01 00:00:00", "ds_acq_end_time": "2020-05-31 00:00:00", "ds_acq_place": "湖北武汉", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 36442, "ds_files_count": 3, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "aa70421d-f73f-4ddb-99e1-dff2ef69d992.jpg", "ds_thumb_from": 0, "ds_ref_way": "周辉，强度参数与内变量的关系分析数据集，国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn/)，2022，doi：10.12072/ncdc.nieer.db2789.2023", "paper_ref_way": "", "ds_ref_instruction": "为保障平台科技资源的权益、扩展平台中心的服务、提升科技资源的应用潜力，请资源使用者在使用资源所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明资源来源和资源作者。", "ds_from_station": null, "organization_id": "57a5e5a3-6fc5-43b5-a2ba-1f2ca54b7727", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2023-04-27 11:06:54", "last_updated": "2023-07-04 02:10:10", "protected": false, "protected_to": "2025-01-01 00:00:00", "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB2789.2023", "i18n": { "en": { "title": "Analysis data set of relationship between strength parameters and internal variables", "ds_format": "", "ds_source": "

                                                                       <p>&emsp;&emsp; The data comes from the test measurement.\n
", "ds_quality": "
                                                                                   <p>&emsp;&emsp; The data quality is good.\n
", "ds_ref_way": "", "ds_abstract": "
 <p>&emsp;&emsp; With the development of material technology, high-strength concrete has been widely used in immersed tube, underwater and deep buried tunnels. It presents elastic, brittle and plastic states under various stress conditions. However, the research on the constitutive model of high-strength concrete is not enough, especially the elasto-plastic coupling property.\n
\n

   In this data set, the elastic-plastic coupling analysis of high-strength concrete is carried out through conventional triaxial compression test and cyclic load test, and the failure process of concrete and related micro cracking behavior during loading are monitored by acoustic emission (AE) technology; Finally, the confining stress function and the plastic internal variable are defined, and the variation of deformation parameters and strength parameters with the plastic internal variable is analyzed. (1) With the increase of plastic internal variable, cohesion decreases and internal friction angle increases. (2) Based on Mohr Coulomb yield criterion, an improved cohesive weakening friction strengthening (CWFS) model is proposed. (3) The expansion angle of concrete is smaller than the internal friction angle, so the elasto-plastic coupling model of high-strength concrete should adopt the non associated flow rule. (4) Based on the test results, an elasto-plastic coupling model is established to provide experimental and theoretical basis for numerical calculation and engineering application.

", "ds_time_res": "", "ds_acq_place": "Wuhan, Hubei", "ds_space_res": "", "ds_projection": "", "ds_process_way": "
                                                                       <p>&emsp;&emsp; Through conventional triaxial compression test and cyclic loading test, the elastic-plastic coupling analysis of high-strength concrete is carried out, and the failure process of concrete and related micro cracking behavior during loading are monitored by acoustic emission (AE) technology; Finally, the confining stress function and the plastic internal variable are defined, and the variation of deformation parameters and strength parameters with the plastic internal variable is analyzed.\n
", "ds_ref_instruction": " In order to protect the rights and interests of the platform's scientific and technological resources, expand the service of the platform center, and enhance the application potential of scientific and technological resources, resource users are requested to clearly indicate the resource sources and resource authors in the research results (including published papers, treatises, data products, and unpublished research reports, data products, and other results) generated by using resources." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "高强混凝土弹塑性", "联轴器", "循环加载测试", "声发射 (AE) 监测", "Mohr-Coulomb 准则" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "湖北武汉" ], "ds_time_tags": [ 2020 ], "ds_contributors": [ { "true_name": "周辉", "email": "hzhou@whrsm.ac.cn", "work_for": "中国科学院武汉岩土力学研究所", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "周辉", "email": "hzhou@whrsm.ac.cn", "work_for": "中国科学院武汉岩土力学研究所", "country": "中国" } ], "ds_managers": [ { "true_name": "周辉", "email": "hzhou@whrsm.ac.cn", "work_for": "中国科学院武汉岩土力学研究所", "country": "中国" } ], "category": "其他" }