隧道结构长期服役状态演变理论与可靠性保障机制数据集
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(1) 隧道NTI (National Tunnel Inventory) 隧道服役状态长期监测数据 隧道服役状态调查数据对应指标1.1“在役陆路交通基础设施状况演变理论”与指标1.2“设施结构长寿命测度评价指标和量化方法”，并支撑课题论文指标。 数据集内容：包含1203条隧道服役状态现场调研数据，目前已收集2018-2021年数据。涵盖特征包括：服役时长，隧道长度，隧道入口纬度，最小垂直净空，隧道入口经度，年度平均日卡车交通量(AADTT)，年平均日交通量（AADT)，隧道宽度，绕行长度，地质条件，道路功能，功能分类，隧道复杂程度，通行费，通航航道净空，隧洞数量，深入检测，高度限制，有害物质限制，通航航道，路线方向，路线类型，交通方向，常规检查间隔，隧道形状，入口形状，车道数。隧道部件分为主体结构、交通土建、非结构三类，针对每类部件分别给出了服役状态等级。服役状态分A~D四级，分别代表优秀、良好、一般和较差。 采集方案：在联邦高速公路管理局（Federal Highway Administration, FHWA）收集的隧道服役状态数据基础上，经数据筛选获得的隧道服役状态现场调研数据，数据筛选原则为：1、样本针对三类部件均能够获取其服役状态分级，即每条样本能获取三个标签值。2、该条样本在本研究考虑的样本特征范围内均无缺失值。 采集地点：深圳。 采集时间：2022年3月~2022年9月 设备情况：计算机 (2)盾构隧道管片偏压持载锈蚀及极限承载力试验数据 盾构隧道管片偏压持载锈蚀及极限承载力试验数据对应指标1.1“在役陆路交通基础设施状况演变理论”与指标1.4“在役重大基础设施状态演变足尺试验验证系统”，并支撑课题论文指标。 数据集内容：该数据集是针对盾构隧道管片在复杂地下环境下的服役特点，通过研究普通混凝土（RC）试件和ECC-RC叠合试件在偏压持载情况下的锈蚀与力学性能变化所采集的数据。数据包括锈蚀过程中试件的应变、试件挠度变化、试件的荷载与位移曲线以及试件破坏模式。 采集方案：采用电化学加速锈蚀方法，通过在试件表面构建腐蚀池并施加电流，实现锈蚀加速；试验过程中，拍摄试件在持载下裂缝的发展情况，以评估偏压持载等级大小对钢筋锈蚀现象影响；通过光纤传感器和百分表实时监测试件锈蚀过程中应变变化、挠度变化等数据；。 采集地点：深圳 采集时间：2023年1月~9月 设备情况：计算机、光纤应变计、直流电源、千斤顶、百分表。 (3) 包裹钢筋试件拉伸持载锈蚀试验数据 ECC 包裹钢筋试件拉伸持载锈蚀试验数据与指标1.1“在役陆路交通基础设施状况演变理论”对应，并支撑课题论文指标。 数据采集内容：为了进一步研究ECC材料作为受拉层材料对盾构隧道管片结构中钢筋锈蚀的影响，根据ECC-RC试件的ECC层受力性质设计了ECC包裹钢筋的ECC拉伸试件，通过四点弯曲加载的方式制造初始裂缝缺陷，以持载等级和锈蚀率作为研究变量。本数据集采集了试件拉伸过程中钢筋的应变、试件内部钢筋表面不同位置的锈蚀程度、钢筋在试验后的质量损失以及ECC包裹层的开裂情况。 采集方案：在钢筋表面和ECC材料上安装应变计，实时监测钢筋和ECC的应变变化，记录拉伸持载过程中应力-应变关系；实验结束后，剥离ECC材料，使用3D扫描技术扫描钢筋并用MATLAB处理后得到全部钢筋锈蚀后全长横截面积分布以评估锈蚀的均匀性；通过精密电子天平称量试验前后的钢筋质量，计算质量损失量，从而定量分析钢筋的腐蚀程度。 采集地点：深圳 采集时间：2024年2月~2024年4月 设备情况：计算机、直流电源、光纤应变计、压力机、电子秤、千斤顶、3D扫描仪。 (4) 复杂荷载与环境作用下隧道结构材料-结构多尺度数值仿真数据 氯盐侵蚀环境下盾构隧道结构长期服役状态演变仿真数据与指标指标1.3：“在役重大基础设施状态演变仿真技术”对应，并支撑课题论文指标。 数据采集内容：主要采集氯盐侵蚀环境下盾构隧道结构长期服役状态演变仿真数据，服役环境下盾构隧道损伤特性及极限承载力、隧道结构内力的演化规律计算结果。 采集方案：从Abaqus软件计算导出相应计算数据。 采集地点：深圳 采集时间：2023年1月~2024年10月 设备情况：工作站、台式电脑。
(1) Tunnel NTI (National Tunnel Inventory) Long-term Monitoring Data on Tunnel Service Status The tunnel service status survey data corresponds to indicator 1.1 "Theory on the Evolution of In-service Land Transportation Infrastructure Conditions" and indicator 1.2 "Measurement and Evaluation Indicators and Quantitative Methods for Long-life Facility Structures", and supports the project paper indicators. Dataset Content: Contains 1203 field survey data on tunnel service status, with data from 2018 to 2021 collected so far. Covered features include: service duration, tunnel length, latitude of tunnel entrance, minimum vertical clearance, longitude of tunnel entrance, annual average daily truck traffic (AADTT), annual average daily traffic (AADT), tunnel width, detour length, geological conditions, road function, functional classification, tunnel complexity, tolls, navigational channel clearance, number of tunnels, in-depth inspection, height restriction, hazardous material restrictions, navigational channels, route direction, route type, traffic direction, routine inspection interval, tunnel shape, entrance shape, number of lanes. Tunnel components are divided into three categories: main structure, traffic civil engineering, and non-structure, and service status grades are given for each category. The service status is divided into four grades A~D, representing excellent, good, fair, and poor respectively. Collection Plan: The field survey data on tunnel service status was obtained through data screening based on the tunnel service status data collected by the Federal Highway Administration (FHWA). The data screening principles are: 1. The sample can obtain the service status grades for all three categories of components, that is, each sample can obtain three label values. 2. There are no missing values for all sample features considered in this study. Collection Location: Shenzhen Collection Time: March 2022 ~ September 2022 Equipment: Computer (2) Test Data on Eccentric Compression, Sustained Loading, Corrosion and Ultimate Bearing Capacity of Shield Tunnel Segments This data corresponds to indicator 1.1 "Theory on the Evolution of In-service Land Transportation Infrastructure Conditions" and indicator 1.4 "Full-scale Test Verification System for State Evolution of In-service Major Infrastructure", and supports the project paper indicators. Dataset Content: This dataset collects data on the changes in corrosion and mechanical properties of ordinary concrete (RC) specimens and ECC-RC composite specimens under eccentric compression and sustained loading, targeting the service characteristics of shield tunnel segments in complex underground environments. The data includes strain of specimens during corrosion, deflection changes of specimens, load-displacement curves of specimens, and specimen failure modes. Collection Plan: Electrochemical accelerated corrosion method was adopted, by constructing corrosion cells on the specimen surface and applying current to achieve accelerated corrosion. During the test, the development of cracks under sustained loading was photographed to evaluate the impact of eccentric compression and sustained loading grades on steel bar corrosion. Strain changes, deflection changes and other data during specimen corrosion were monitored in real time through fiber optic sensors and dial indicators. Collection Location: Shenzhen Collection Time: January 2023 ~ September 2023 Equipment: Computer, fiber optic strain gauges, DC power supply, jacks, dial indicators (3) Tensile Sustained Loading Corrosion Test Data for ECC-wrapped Steel Bar Specimens This data corresponds to indicator 1.1 "Theory on the Evolution of In-service Land Transportation Infrastructure Conditions", and supports the project paper indicators. Data Collection Content: To further study the impact of ECC material as a tensile layer material on steel bar corrosion in shield tunnel segment structures, ECC tensile specimens with ECC-wrapped steel bars were designed based on the stress properties of the ECC layer of ECC-RC specimens. Initial crack defects were created through four-point bending loading, with sustained loading grade and corrosion rate as research variables. This dataset collects the strain of steel bars during specimen stretching, the corrosion degree at different positions on the internal steel bar surface of the specimens, the mass loss of steel bars after the test, and the cracking of the ECC wrapping layer. Collection Plan: Strain gauges were installed on the steel bar surface and ECC material to monitor the strain changes of steel bars and ECC in real time, and record the stress-strain relationship during the tensile sustained loading process. After the experiment, the ECC material was stripped, and the steel bars were scanned using 3D scanning technology, and processed with MATLAB to obtain the full-length cross-sectional area distribution of the corroded steel bars to evaluate the uniformity of corrosion. The mass of the steel bars before and after the test was weighed using a precision electronic balance, and the mass loss was calculated to quantitatively analyze the corrosion degree of the steel bars. Collection Location: Shenzhen Collection Time: February 2024 ~ April 2024 Equipment: Computer, DC power supply, fiber optic strain gauges, press, electronic scale, jacks, 3D scanner (4) Multi-scale Numerical Simulation Data of Tunnel Structural Materials and Structures Under Complex Loading and Environmental Actions The simulation data on the long-term service status evolution of shield tunnel structures under chloride ion erosion environment corresponds to indicator 1.3 "Simulation Technology for State Evolution of In-service Major Infrastructure", and supports the project paper indicators. Data Collection Content: Mainly collects simulation data on the long-term service status evolution of shield tunnel structures under chloride ion erosion environment, as well as the calculation results of damage characteristics and ultimate bearing capacity of shield tunnels under service environment, and the evolution law of internal forces of tunnel structures. Collection Plan: Corresponding calculation data was exported from Abaqus software. Collection Location: Shenzhen Collection Time: January 2023 ~ October 2024 Equipment: Workstations, desktop computers
