A novel concrete-filled flange steel tubular composite supports for tunnels: A numerical perspective
Source abstract
Abstract
In this study, a new type of concrete-filled flange steel tubular composite support (referred to as a concrete-filled flange steel composite support) was designed to address the inadequate bending load-bearing performance of concrete-filled steel tubular supports. The bending load-bearing performance of concrete-filled flange steel tubular beams was studied through numerical simulations, revealing the improvement effect of welded T-section steel on the bending performance of the beams. The load-bearing characteristics of the concrete-filled flange steel composite and tubular supports were explored through theoretical analysis. Using a coal mine tunnel, the effectiveness of the concrete-filled flange steel composite support for controlling tunnel deformation was verified. The results indicated that the improvement in the bending load-bearing performance of concrete-filled flange steel tubular beams was mainly due to the bending load-bearing capacity of the T-section steel. Increasing the height of the T-section steel web effectively enhanced the bending load-bearing performance of the concrete-filled flange steel composite support when the same amount of steel was used, and the load-bearing performance of the concrete-filled flange steel composite support was significantly better than that of the traditional concrete-filled steel tubular support. With a lateral pressure coefficient farther from 1, the superiority was more pronounced.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Structural Load-Bearing Analysis · Structural Behavior of Reinforced Concrete · Fire effects on concrete materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. Flexural response of concrete-filled seamless steel tubes10.1016/j.jcsr.2018.06.030 ↗
2. Flexural behaviour of concrete filled tubular flange girders10.1016/j.jcsr.2018.09.017 ↗
3. Fire resistance of concrete-filled steel tube beam-column under elevated temperatures and cyclic loading
4. Flexural behavior of concrete-filled aluminum alloy circular hollow section tubes10.1016/j.conbuildmat.2017.12.104 ↗
5. Flexural behaviour of concrete-filled stainless steel SHS and RHS tubes strengthened by CFRP10.1016/j.tws.2017.10.016 ↗
6. Flexural load testing of concrete-filled FRP tubes with longitudinal steel and FRP rebar10.1061/(ASCE)1090-0268(2006)10:2(161) ↗
7. Flexural performance of rectangular CFST composite T-beams: Experimental, numerical, and theoretical investigation10.1016/j.jcsr.2023.108356 ↗
8. New damage ratio strength criterion for concrete and lightweight aggregate concrete
9. Concrete-filled circular steel tubes subjected to pure bending10.1016/S0143-974X(01)00035-9 ↗
10. Experimental and numerical investigations on flexural behaviour of CFRP reinforced concrete-filled stainless steel CHS tubes10.1016/j.engstruct.2017.11.032 ↗
11. Axial capacity of circular concrete-filled tube columns10.1016/j.jcsr.2003.10.001 ↗
12. Axial and flexural behavior of unreinforced and FRP bar reinforced circular concrete filled FRP tube columns10.1016/j.conbuildmat.2016.06.044 ↗
13. He · 2010
14. Research on the mechanics of deep mining rocks
15. Nonlinear analysis of axially load concrete-filled tube columns with confinement effect10.1061/(ASCE)0733-9445(2003)129:10(1322) ↗
16. Constitutive modeling of concrete by using nonassociated plasticity10.1061/(ASCE)0899-1561(1989)1:4(199) ↗
17. Lateral torsional buckling strength of tubular flange girders10.1061/(ASCE)0733-9445(2008)134:6(902) ↗
18. Stability analysis of concrete-filled steel tubular support in dynamic pressure soft rock roadways
19. Current situation and development trend of coal mine roadway support theory and technology in China
20. Bending failure mechanism and strengthening of concrete-filled steel tubular support10.1016/j.engstruct.2019.109449 ↗
21. Large deformation mechanism and concrete-filled steel tubular support control technology of soft rock roadway-a case study10.1016/j.engfailanal.2020.104721 ↗
22. Theoretical stress-strain model for confined concrete10.1061/(ASCE)0733-9445(1988)114:8(1804) ↗
23. Qu · 2013
24. College of engineering. engineering experiment station: University of Illinois at Urbana Champaign
25. Unified prediction models for mechanical properties and stress-strain relationship of dune sand concrete
26. Axial compression behavior and reliable design approach of rectangular dune sand concrete-filled steel tube stub columns
27. Analytical modelling and design of partially CFRP-wrapped thin-walled circular NCFST stub columns under axial compression
28. Scientific research methods in finite element theory
29. Flexural behaviour of CFST members strengthened using CFRP composites10.12989/scs.2013.15.6.623 ↗
30. Cyclic performance of fire-damaged concrete-filled steel tubular beam-columns repaired with CFRP wraps10.1016/j.jcsr.2007.02.004 ↗
31. Experimental study on bending performance of concrete-filled steel composite beams with flange tube
32. Study of the behavior of square concrete-Filled CFRP steel tubular under a bending-torsion load10.3390/polym14071472 ↗
33. Application of concrete-filled steel tubular support in downhill rock roadway
34. Experimental and numerical investigation on the flexural behavior of concrete-filled elliptical steel tube (CFET)
35. Zhong · 2004
36. Flexural behavior of concrete-filled SHS and RHS aluminum alloy tubes strengthened with CFRP10.1016/j.compstruct.2020.111975 ↗