Application of Triangle Counterforce Frame Load in the Basket Trial Load Test in Jialing River Extra-large Bridge of Lanyu Railway

This paper takes the basket trial load test of continuous beam of Nanchong as a case study to mainly introduce the operation process, technical requirements and data collection methods in loading process of basket trial load test by using triangle counterforce frame.It uses the data parameters of stress calculation and trial load of counterforce frame to evaluate the force condition of basket structure to provide reliable parameters for the hanging basket construction.