In-situ bearing test and feedback analysis of photovoltaic GFRP pile foundation
At present,the prestressed concrete pipe pile(PHC)scheme is mainly adopted for mudflat photovoltaic infrastructure,which has certain disadvantages in economy and construction convenience.In order to improve the efficiency of photovoltaic construction in mudflat,in view of the weak bearing capacity of mudflat site foundation and the difficulty of earthwork excavation,and on the basis of meeting the bearing capacity,optimize the conven-ience of pile foundation construction,propose to use the fiber composite material pile with weight advantage-glass fiber(GFRP)pipe pile,and explore the bearing capacity of GFRP pipe pile.By conducting on-site bearing tests,the bearing capacity performance of GFRP pipe piles was obtained and compared with PHC pipe piles,while nu-merical simulation was combined for feedback analysis.Feedback analysis and comparison results show that PHC pile can be stably loaded to 2.0 times the design load,while GFRP pile shows significant deflection after being loaded to 1.2 times the design load.The results indicate that the bearing performance of GFRP pipe piles meets the design load requirements,but in terms of deformation control,it is inferior to existing PHC pipe pile schemes.In comparison,PHC pipe piles have more sufficient safety margin.Through the research and exploration of GFRP ma-terial pile foundation,improvement measures for the production process of GFRP pipe piles are proposed,and the future focus of further research on GFRP pipe piles is discussed.
万方数据
维普
