Technical gazette, Vol. 25 No. 1, 2018.
Original scientific paper
https://doi.org/10.17559/TV-20170317153659
Analysis on the Tendon Spacing of Prestressed Tunnel Liner
Rui Jing
; School of Civil Engineering, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, China, 300072
Jingfu Kang
; School of Civil Engineering, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, China, 300072
Zhen Wang
; Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST)
Zhaowei Shen
; Shandong Electric Power Engineering Consulting Institute
Dazhi Wang
; School of Civil Engineering, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, China, 300072
Abstract
In this paper, based on cylindrical shell theory of elastic mechanics, the mechanical property of prestressed concrete lining structure was studied; models of calculating infinitely-long structure and semi-infinitely-long structure were established; theoretical formulas of normal displacement and inner force on the middle surface were deduced; the maximum influence scope of stress was determined and the superposition formula of maximum cable spacing was deduced. Combing observed data in practical project, the theoretical result and measured result of circumferential stress in prestressed concrete lining structure was compared. Results reveal that the theoretical result coincides with the measured value and that the method determining maximum cable spacing can be applied into practical projects. The even distribution of circumferential stress in the axial direction caused by the tensile force of anchor cable is not a factor determining the cable spacing.
Keywords
elastic theory; measured data; prestressed concrete lining structure; tendon spacing
Hrčak ID:
193592
URI
Publication date:
10.2.2018.
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