Title: Research on the evaluation model of deep foundation pit supporting structures in urban traffic tunnels

Authors: Wenbiao He

Addresses: Baotou Railway Vocational and Technical College, Baotou, 014000, China

Abstract: In order to improve the building mechanics performance of the foundation pit supporting structure of urban traffic tunnel and guide the engineering design and construction, the evaluation model of the deep foundation pit supporting structure of urban traffic tunnel is proposed based on mechanical anchoring and linear mechanical loading. The mechanical anchoring method is used to load the support structure of deep foundation pit of urban traffic tunnel. The constitutive relation of dynamic node of deep foundation pit supporting structure of urban traffic tunnel under moving load is constructed, and the tangent elastic modulus of supporting structure of deep foundation pit of tunnel is calculated according to equivalent stress-strain relation. Thus, the mechanical evaluation and optimisation design of deep foundation pit supporting structure of urban traffic tunnel are realised. The test results show that the mechanical loading performance of the model is good for the design of the deep foundation pit supporting structure of urban traffic tunnel, and the load capacity of the supporting structure is improved, and the engineering design of the foundation pit supporting structure is optimised.

Keywords: urban traffic tunnel; supporting structure; load; evaluation model; mechanics.

DOI: 10.1504/IJBM.2020.105621

International Journal of Biometrics, 2020 Vol.12 No.1, pp.3 - 12

Received: 02 Mar 2019
Accepted: 07 Apr 2019
Published online: 06 Mar 2020 *

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