Bengbu Yan'an Road Bridge, constructed by China Railway No.4 Engineering Group Co., Ltd., completes load test

en.Wedoany.com Reported - On November 10, the Yan'an Road Bridge in Bengbu, Anhui Province, constructed by China Railway No.4 Engineering Group under China Railway, completed its load test. The test used 42-tonne heavy-duty vehicles for graded loading and was carried out in two phases: static load testing and dynamic load testing. It focused on collecting data such as bridge strain, deflection and cable force to verify the structural bearing capacity and dynamic performance, providing a basis for project completion acceptance and subsequent operation and maintenance.

During the load test, 36 heavy-duty trucks drove onto the main bridge in batches, with a total vehicle weight of approximately 1,500 tonnes. The static load test monitored the structural deformation and stress conditions of the bridge under vehicle loads through graded loading at different positions and in combined loading conditions; the dynamic load test simulated actual traffic loads through vehicle movement, measuring the bridge's vibration frequency, amplitude, impact factor and cable force variations to comprehensively evaluate the bridge's dynamic response.

The Bengbu Yan'an Road Bridge and approach works have a total length of 2,733 meters. The river-crossing section adopts a twin-tower, double-cable-plane cable-stayed bridge structure with a main span of 420 meters, making it the cable-stayed bridge with the largest main span in the Huai River basin. The bridge features two 141-meter-tall irregular main towers, located on the north and south banks of the Huai River respectively, with a design combining gate-shaped and mussel-shaped forms. The river-crossing bridge and the approach works on both banks together form a north-south urban traffic corridor.

Upon completion, the bridge will connect the north and south banks of the Huai River in Bengbu, sharing the existing river-crossing traffic volume in the central urban area and improving road traffic conditions between the northern and southern urban districts. Following the completion of this load test, the project has entered the subsequent testing and finalization stage prior to completion acceptance.