A Concrete-Filled Steel Tubular Yieldable Support for a Tunnel within Deep Soft Rock
Publication: International Journal of Geomechanics
Volume 22, Issue 7
Abstract
A concrete-filled steel tubular (CFT) yieldable support is proposed as a new passive support system in deep tunnels to improve the stability of soft rock mass, which consists of a CFT arc, a porous metal connector, and a steel tube. The connector provides a new yieldable mechanism; that is, the constant yield resistance and large deformation under compression can be determined by the void ratio and porous length of the connector. The test results indicate that the load–displacement response for the CFT yieldable support can be divided into four stages, namely, elastic stage, yieldable stage I, load transition stage, and yieldable stage II. A numerical model is then developed to investigate the deformation of a deep tunnel supported by the CFT supporting system. The results indicate that a higher concrete strength can lead to a lower deformation of the CFT yieldable support. The deformation of the tunnel roof can be effectively controlled by using higher-strength concrete. The void ratio obviously influences the deformation of the roof, and a higher void ratio tends to lead to a larger deformation. Finally, an empirical approach is suggested to predict the initial resistance and bearing capacity of the CFT yieldable support.
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Acknowledgments
The work was supported by the National Natural Science Fund of China (No. 51674100).
References
Barla, G., M. Bonini, and M. Semeraro. 2011. “Analysis of the behaviour of a yield-control support system in squeezing rock.” Tunnelling Underground Space Technol. 26 (1): 146–154. https://doi.org/10.1016/j.tust.2010.08.001.
Beck, D., and E. Villaescusa. 2012. “Supporting collapsed and highly deformed areas of block cave extraction levels.” ISRM India J. 1 (2): 3–9.
Cai, S. H. 2007. Modern steel tube confined concrete structures. Rev. ed. Beijing: China Communications Press.
Cantieni, L., and G. Anagnostou. 2009. “The interaction between yielding supports and squeezing ground.” Tunnelling Underground Space Technol. 24: 309–322. https://doi.org/10.1016/j.tust.2008.10.001.
CEB-FIP. 1993. CEB-FIP model code 90. London: Thomas Telford.
Chang, X., Y.-Y. Wei, and Y.-C. Yun. 2012. “Analysis of steel-reinforced concrete-filled-steel tubular (SRCFST) columns under cyclic loading.” Constr. Build. Mater. 28 (1): 88–95. https://doi.org/10.1016/j.conbuildmat.2011.08.033.
Chang, X., X. L. Luo, C. X. Zhu, and C. A. Tang. 2014. “Analysis of circular concrete-filled steel tube (CFT) support in high ground stress conditions.” Tunnelling Underground Space Technol. 43: 41–48. https://doi.org/10.1016/j.tust.2014.04.002.
Ding, F.-x., L. Fu, and Z.-w. Yu. 2017. “Behaviors of axially loaded square concrete-filled steel tube (CFST) stub columns with notch in steel tube.” Thin-Walled Struct. 115: 196–204. https://doi.org/10.1016/j.tws.2017.02.018.
Donnell, L. H., and C. C. Wan. 1950. “Effect of imperfections on buckling of thin cylinders and columns under axial compression.” J. Appl. Mech. 17 (1): 73–83. https://doi.org/10.1115/1.4010060.
Elchalakani, M., and X.-L. Zhao. 2008. “Concrete-filled cold-formed circular steel tubes subjected to variable amplitude cyclic pure bending.” Eng. Struct. 30: 287–299. https://doi.org/10.1016/j.engstruct.2007.03.025.
Ellobody, E., and B. Young. 2006. “Nonlinear analysis of concrete-filled steel SHS and RHS columns.” Thin-Walled Struct. 44: 919–930. https://doi.org/10.1016/j.tws.2006.07.005.
Gao, Y., B. Wang, and J. Wang. 2010. “Test on structural property and application of concrete-filled steel tube support of deep mine and soft rock roadway.” Chin. J. Rock Mech. Eng. 29 (A1): 2604–2609.
Han, L.-H., Z. Tao, and W. Liu. 2004. “Effects of sustained load on concrete-filled hollow structural steel columns.” J. Struct. Eng. 130 (9): 1392–1404. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:9(1392).
Hassanein, M. F., O. F. Kharoob, and L. Gardner. 2015. “Behaviour and design of square concrete-filled double skin tubular columns with inner circular tubes.” Eng. Struct. 100: 410–424. https://doi.org/10.1016/j.engstruct.2015.06.022.
He, M. C. 2011. “Physical modeling of an underground roadway excavation in geologically 45° inclined rock using infrared thermography.” Eng. Geol. 121: 165–176. https://doi.org/10.1016/j.enggeo.2010.12.001.
Hellmich, C., J. Sercombe, F.-J. Ulm, and H. A. Mang. 2000. “Modelling of early-age creep of shotcrete. II: Application to tunneling.” J. Eng. Mech. 126 (3): 292–299.
Hibbitt, Karlson & Sorensen. 2003. ABAQUS/standard user’s manual, version 6.4.1. Pawtucket, RI: Hibbitt, Karlson & Sorensen.
Hu, H., C. Huang, M. Wu, and Y. Wu. 2003. “Nonlinear analysis of axially loaded concrete-filled tube columns with confinement effect.” J. Struct. Eng. 129 (10): 1322–1329. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:10(1322).
Huang, W. P., Q. Yuan, Y. L. Tan, J. Wang, G. L. Liu, G. L. Qu, and C. Li. 2018. “An innovative support technology employing a concrete-filled steel tubular structure for a 1000-m-deep roadway in a high in situ stress field.” Tunnelling Underground Space Technol. 73: 26–36. https://doi.org/10.1016/j.tust.2017.11.007.
Kang, H. P., J. Lin, and Y. Z. Wu. 2009. “Development of high pretensioned and intensive supporting system and its application in coal mine roadways.” Procedia Earth Planet. Sci. 1: 479–485. https://doi.org/10.1016/j.proeps.2009.09.076.
Kang, Y., Q. Liu, G. Gong, and H. Wang. 2014. “Application of a combined support system to the weak floor reinforcement in deep underground coal mine.” Int. J. Rock Mech. Min. Sci. 71: 143–150. https://doi.org/10.1016/j.ijrmms.2014.03.017.
Khan, U., H. Mitri, and D. Jones. 1996. “Full scale testing of steel arch tunnel supports.” Int. J. Rock Mech. Min. Sci. Geomech. Abstr. 33 (3): 219–232. https://doi.org/10.1016/0148-9062(95)00065-8.
Lachner, R., J. Macht, C. Hellmich, and H. A. Mang. 2002. “Hybrid method for analysis of segmented shotcrete tunnel linings.” J. Geotech. Geoenviron. Eng. 128 (4): 298–308. https://doi.org/10.1061/(ASCE)1090-0241(2002)128:4(298).
Li, C. C. 2006. “Rock support design based on the concept of pressure arch.” Int. J. Rock Mech. Min. Sci. 43 (7): 1083–1090. https://doi.org/10.1016/j.ijrmms.2006.02.007.
Li, G., Z. Tao, and H. Guo. 2010. “Stability control of a deep shaft insert.” Min. Sci. Tech. 20: 491–498.
Mander, J., M. Priestley, and R. Park. 1988. “Theoretical stress-strain model for confined concrete.” J. Struct. Eng. 114 (8): 1804–1826. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804).
Nicotera, M. V., and G. Russo. 2021. “Monitoring a deep excavation in pyroclastic soil and soft rock.” Tunnelling Underground Space Technol. 117: 104130. https://doi.org/10.1016/j.tust.2021.104130.
Ozturk, H., and D. Tannant. 2011. “Influence of rock properties and environmental conditions on thin spray-on liner adhesive bond.” Int. J. Rock Mech. Min. Sci. 48: 1196–1198. https://doi.org/10.1016/j.ijrmms.2011.06.006.
Park, R., and T. Paulay. 1975. Reinforced concrete structure. Hoboken, NJ: Wiley.
Richart, F., A. Brandzaeg, and R. Brown. 1928. A study of the failure of concrete under combined compressive stresses. Champaign, IL: Univ. of Illinois Engineering Experimental Station.
Wang, Q., B. Jiang, R. Pan, S.-C. Li, M.-C. He, H.-B. Sun, Q. Qin, H.-C. Yu, and Y.-C. Luan. 2018. “Failure mechanism of surrounding rock with high stress and confined concrete support system.” Int. J. Rock Mech. Min. Sci. 102: 89–100. https://doi.org/10.1016/j.ijrmms.2018.01.020.
Yu, J., G. Y. Liu, Y. Y. Cai, J. F. Zhou, S. Y. Liu, and B. X. Tu. 2020. “Time-dependent deformation mechanism for swelling soft-rock tunnels in coal mines and its mathematical deduction.” Int. J. Geomech. 20 (3): 04019186. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001594.
Yu, J., C. H. Ren, Y. Y. Cai, W. Yao, and X. Y. Liu. 2021. “Analytical approach for evaluating the dynamic self-bearing capacity of tunnels.” Int. J. Geomech. 21 (8): 04021133.
Zhang, C., X.-T. Feng, and H. Zhou. 2012. “Estimation of in situ stress along deep tunnels buried in complex geological conditions.” Int. J. Rock Mech. Min. Sci. 52: 139–162. https://doi.org/10.1016/j.ijrmms.2012.03.016.
Zhang, C., Y. Wei, L. Wang, and M. Wu. 2017. “Hysteretic mechanical property of low-yield strength shear panel damper in ultra-large plastic strain.” Int. J. Rock Mech. Min. Sci. 148: 11–22.
Zhou, X.-P., and Y.-D. Shou. 2013. “Excavation-induced zonal disintegration of the surrounding rock around a deep circular tunnel considering unloading effect.” Int. J. Rock Mech. Min. Sci. 64: 246–257. https://doi.org/10.1016/j.ijrmms.2013.08.010.
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Published In
International Journal of Geomechanics
Volume 22 • Issue 7 • July 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Dec 13, 2020
Accepted: Feb 8, 2022
Published online: May 4, 2022
Published in print: Jul 1, 2022
Discussion open until: Oct 4, 2022
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