Study on the reasonable RSR of arch and its influencing factors in PBA method
DOI:
https://doi.org/10.14311/CEJ.2023.02.0018Keywords:
Subway, PBA method, RSR, LPC, structure thickness, deformation law, Concrete structureAbstract
In this paper, based on the numerical calculation, the reasonable rise-span ratio (RSR) and its influencing factors of the arch in the PBA method are compared and analyzed, and the mechanical properties of the arch under different influencing factors (RSR, lateral pressure coefficient (LPC), and structure thickness) is further obtained. The results show that the deformation and bending moment of the arch structure decreases first and then increases with the increase of the RSR, that is, optimal RSR exists. Different LPCs have a great influence on the stress of arch structure, and the deformation and bending moment of arch structure decrease with the increase of LPC. The increase in arch structure thickness can effectively reduce structural deformation, but may also lead to an increase in structural stress due to the increase in self-weight. At the same time, the comprehensive factors show that the optimal RSR increases with the increase of LPC and structure thickness, and it is suggested that the reasonable RSR should be 0.2-0.3. The rationality of the calculation is also verified by the application status of the station RSR with the PBA method in China.
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References
Fang, X., 2013. Research on construction mechanical behavior of subway station with PBA cave-pile method and space-crossing structure. Master thesis, Southwest Jiaotong University, Chengdu.
Yu, L., Zhang, D.L, Fang, Q., et al, 2019. Surface settlement of subway station construction using pile-beam-arch approach. Tunnelling and Underground Space Technology, Vol. 90: 340-356.
https://doi.org/10.1016/j.tust.2019.05.016
Huang, B., Du, Y.H, Zeng, Y., et al, 2022. Study on stress field distribution during the construction of a group of tunnels using the pile-beam-arch method. Buildings, Vol. 12: 300. https://doi.org/10.3390/buildings12030300
Luo, F.R., Wang, Y.H., Hao, Z.H., 2015. The key technology of tunnel pile design and construction of subway station, 29-65 (China Railway Press).
Zhong, Z.L., Liu, A.R., Pi, Y.L., et al, 2020. In-plane dynamic instability of a shallow circular arch under a vertical-periodic uniformly distributed load along the arch axis. International Journal of Mechanical Sciences, Vol. 189: 105973. https://doi.org/10.1016/j.ijmecsci.2020.105973
Hu, C.F., Pi, Y.L., Gao, W., et al, 2018. In-plane non-linear elastic stability of parabolic arches with different rise-to-span ratios. Thin-Walled Structures, Vol. 129: 74-84. https://doi.org/10.1016/j.tws.2018.03.019
Vo, D., Nanakorn, P., 2019. Large displacement analysis of pinned-fixed circular arches with different rise-to-span ratios using an isogeometric approach. In: Proceedings of the 16th East Asian-Pacific Conference on Structural Engineering and Construction. Singapore, 951-960. https://doi.org/10.1007/978-981-15-8079-6_89
Fang, Z.B., 2016. Reasonable section form design of underground excavation entrance and exit of subway station. China Water Transport, Vol. 16: 230-232.
Fu, Y.P., 2018. Influence of rise-span ratio of double track tunnel inverted arch on mechanical properties of secondary lining in swelling rock stratum. Railway Engineering, Vol. 58: 64-66. https://doi.org/10.3969/j.issn.1003-1995.2018.08.16
Zheng, L.G., Chang, L.F., Jiang, H., et al, 2022. Stress characteristics of concrete-filled steel tubular column and surfacedeformation in pile-beam-arch station with different rise-span ratios of arch:a case study of Xiangheyuan Station on Beijing Metro Line 17. Tunnel Construction, Vol. 42: 174-182. https://doi.org/10.3973/j.issn.2096-4498.2022.S1.020
Liu, H., 2015. Research on the design of rise-span ratio in arch structures. Master thesis, Changsha University of Science and Technology, Changsha.
Fang, W., Zhang, H.J., Gao, S.F., et al, 2022. Mechanical characteristics and deformation law of tunnel in diatomite considering various softening conditions. Stavební obzor-Civil Engineering Journal, Vol.31: 504-515. https://doi.org/10.14311/CEJ.2022.03.0038%20
Ma, W. B., Chai, J. F., Han, Z. L., et al, 2020. Research on design parameters and fatigue life of tunnel bottom structure of single-track ballasted heavy-haul railway tunnel with 40-ton axle load. Mathematical Problems in Engineering, Vol. 2020: 3181480. https://doi.org/10.1155/2020/3181480
Yao, J., 2014. Practical manual for static calculation of building structures, 241-286 (China Architecture and Building Press).
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