Abstract: The present invention discloses a platform and method for intelligent management of integration of construction and maintenance of rail transportation work, comprising: a work construction information sharing module based on GIS and BIM is configured to realize the integration and data sharing between BIM model of each station and section of the rail transportation and a 3D geological management platform of rail transportation; a work construction informatization management module based on progress control is configured to provide an information control of work preparation plan, contract performance and measurement and pricing, safety and quality investigation, risk early warning and design change in the work construction stage; a rail transportation operation and maintenance module based on the integration of construction and maintenance is configured to provide an information management and control of equipment, materials and safety risk early warning in the rail transportation operation and maintenance sta

Abstract: A method for calculating flexural capacity of a steel plate-reinforced joint in shield tunnel includes: (S1) obtaining a construction parameter, a material parameter, and a mechanical parameter of a joint surface; and calculating a virtual strain ?sp,0a height xcb1 of a critical compression zone for bolt yielding in case of section failure, and a height xcb1 of a critical compression zone for steel plate yielding; (S2) calculating a height xc of a compression zone of a joint surface of the steel plate-reinforced joint in a certain failure state; (S3) determining whether xc satisfies a range requirement: if so, executing step (S4); and if no, replacing a new failure state; and skipping to step (S2) until traversing all failure states; and (S4) substituting xc into a bending moment equilibrium equation for the current failure state; and calculating an ultimate bending moment. A computer-readable storage medium is further provided.

Abstract: Disclosed is a comprehensive inspection vehicle for a subway tunnel, including a positioning system, an acquisition system and a flatcar. The flatcar runs on a railway of the subway tunnel. The positioning system and the acquisition system are arranged on the flatcar. The positioning system includes a laser ranging module and an inertial navigation module. The comprehensive inspection vehicle further includes an independent power supply system and a central control system arranged on the flatcar. The independent power supply system supplies power for the acquisition system, the positioning system and the central control system. The central control system includes an acquisition industrial computer and a positioning industrial computer which are respectively connected to the acquisition system and the positioning system.

Abstract: The present invention discloses a platform and method for intelligent management of integration of construction and maintenance of rail transportation work, comprising: a work construction information sharing module based on GIS and BIM is configured to realize the integration and data sharing between BIM model of each station and section of the rail transportation and a 3D geological management platform of rail transportation; a work construction informatization management module based on progress control is configured to provide an information control of work preparation plan, contract performance and measurement and pricing, safety and quality investigation, risk early warning and design change in the work construction stage; a rail transportation operation and maintenance module based on the integration of construction and maintenance is configured to provide an information management and control of equipment, materials and safety risk early warning in the rail transportation operation and maintenance sta

Abstract: The invention discloses a method for detecting service performance of a tunnel lining based on defect characteristics of the tunnel lining. A tunnel, an external load and stratum conditions are simulated by establishing a model using a model test method. A structural stress failure test for the model is carried out, and test results of the defect characteristics of a simulation lining of the model are recorded. A corresponding relationship between the defect characteristics of the simulation lining and the remaining bearing capacity interval is established according to the recorded test results. Detection results of defect characteristics of the tunnel lining are recorded using an in-situ detection method, and a remaining bearing capacity interval of the tunnel lining is determined based on the detection results according to the corresponding relationship between the defect characteristics of the simulation lining and the remaining bearing capacity interval of the model.

Abstract: The invention discloses a method for detecting service performance of a tunnel lining based on defect characteristics of the tunnel lining. A tunnel, an external load and stratum conditions are simulated by establishing a model using a model test method. A structural stress failure test for the model is carried out, and test results of the defect characteristics of a simulation lining of the model are recorded. A corresponding relationship between the defect characteristics of the simulation lining and the remaining bearing capacity interval is established according to the recorded test results. Detection results of defect characteristics of the tunnel lining are recorded using an in-situ detection method, and a remaining bearing capacity interval of the tunnel lining is determined based on the detection results according to the corresponding relationship between the defect characteristics of the simulation lining and the remaining bearing capacity interval of the model.

Abstract: Disclosed is a comprehensive inspection vehicle for a subway tunnel, including a positioning system, an acquisition system and a flatcar. The flatcar runs on a railway of the subway tunnel. The positioning system and the acquisition system are arranged on the flatcar. The positioning system includes a laser ranging module and an inertial navigation module. The comprehensive inspection vehicle further includes an independent power supply system and a central control system arranged on the flatcar. The independent power supply system supplies power for the acquisition system, the positioning system and the central control system. The central control system includes an acquisition industrial computer and a positioning industrial computer which are respectively connected to the acquisition system and the positioning system.

Abstract: An on-line tunnel deformation monitoring system based on image analysis and its application comprises identification points, an IP camera, a central control computer, as well as a transmission network and the application of the system includes the following steps: 1) lay the identification points; 2) the central control computer controls the zoom photography of the IP camera periodically; 3) the IP camera transmits the photos to the central control computer; 4) the central control computer conducts self-adaptive filtering transformation for the photos; 5) the central control computer conducts grayscale threshold transformation; 6) the central control computer conducts image edge detection to obtain the identification points; 7) calculation of the arch crown settlement displacement and the arch springing convergence displacement of the identification points; 8) judge whether the arch crown settlement displacement and the arch springing convergence displacement are both less than the set thresholds, and if they