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The mechanical properties of cooperative system bridges are complex. This paper describes the construction monitoring and load tests of a cable-stayed and arch cooperative bridge. The cable force, girder stress and arch alignment were monitored during construction to ensure the safety of the bridge structure and attain the intended internal force state in the completed bridge. Static and dynamic load tests were performed after completing the bridge to test its bearing capacity. The construction monitoring observations indicated that the cable force and suspender force change of the bridge during construction were generally consistent with theoretical calculations. The measured cable force of cable C01 was between 2155 and 3085 kN, and the measured value of suspender LS15 was between 980 and 1250 kN; these values conform to the laws of mechanics. The load test results demonstrated that the maximum deflection of the mid-span section of the girder was 5.8 mm, which was less than the theoretical value (6.3 mm). The measured impact coefficients of the bridge under four sets of working conditions based on dynamic load testing were similar to the computed results. These results confirm that the girder has sufficient structural stiffness. [ABSTRACT FROM AUTHOR]

High-temperature superconducting (HTS) magnetic levitation (maglev) has the advantages of low-energy consumption and is environment friendly. This article tried to apply this novel technology to sightseeing vehicles. As the bogie is one of the most important components of the vehicle, a new type of bogie was designed for the need of small-radius curve passing and its dynamic characteristics were evaluated. A 3-D model of a bogie with primary suspension was built. By which, the space utilization of the vehicle can be improved and the passengers will have higher comfort. Then, a dynamic model of the vehicle–bridge coupled system was constructed based on a multibody dynamics software, universal mechanism. The dynamic performance of bogie with and without primary suspension was compared to explore its necessity. The vehicle–bridge dynamic performance was simulated and analyzed under different speeds and curve radii. The results show that the HTS maglev sightseeing vehicle with the bogie with primary suspension has favorable dynamic performance. For higher speeds and smaller curve radius, the vibration response will worsen. This study can provide references for the design and optimization of HTS maglev bogies suitable for small-radius curve passing. [ABSTRACT FROM AUTHOR]