Research on the Method of Improving the Gripping Force of Ultra-high Performance Concrete-Concrete-filled Steel Tube Composite Structure
The method of improving the gripping force of ultra-high performance concrete-concrete-filled steel tube(UHPC-CFST)composite structure is studied through experimental test,finite element calculation,and practical engineering application.For UHPC-CFST structure,measures such as roughening steel tubes,applying prestress,and adding steel fibers are adopted to improve the gripping force.Research has found that applying prestress can effectively enhance the gripping force between steel tube and concrete;adding steel fibers has little effect on the improvement of gripping force;roughening steel tubes can significantly improve the gripping force.The application of these gripping force improvement methods will provide reliable solutions for construction engineering projects.
ultra-high performance concreteconcrete-filled steel tubegripping force
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