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An efficient 2-way shear grillage model solution for bridge RC four-pile caps under wall loading
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Cao, Jing, Bloodworth, Alan G. and Xu, Ming (2019) An efficient 2-way shear grillage model solution for bridge RC four-pile caps under wall loading. Journal of Bridge Engineering, 24 (8). doi:10.1061/(ASCE)BE.1943-5592.0001435 ISSN 1084-0702.
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Official URL: https://doi.org/10.1061/(ASCE)BE.1943-5592.0001435
Abstract
Reinforced concrete four-pile caps under wall loading occur in heavily loaded foundations in bridge construction. The failure mode of shear across the full width of the cap may occur in these deep structural elements. A statically determinate two-way grillage model, comprising orthogonal deep beam grillage elements obeying a predetermined test observing deflection pattern and boundary conditions, is established to solve the structure’s shear capacity. The model gives more accurate and faster solutions than the traditional strut-and-tie method and commercial nonlinear numerical modeling. A key step to solving the model is a linear constitutive (load-deflection) relationship developed for the grillage elements. The grillage model is verified against laboratory experiments for nine pile caps at the University of Southampton (UoS) with the results of a numerical modeling parametric study. A Visual Basic Userform-based design software is developed, incorporating the model and enabling engineers to obtain the shear capacity, full-field reinforcement stress distribution, and cap deflections within seconds.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TG Bridge engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Reinforced concrete , Bridges -- Design and construction, Girders, Strut-and-tie models | ||||||||
Journal or Publication Title: | Journal of Bridge Engineering | ||||||||
Publisher: | American Society of Civil Engineers | ||||||||
ISSN: | 1084-0702 | ||||||||
Official Date: | August 2019 | ||||||||
Dates: |
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Volume: | 24 | ||||||||
Number: | 8 | ||||||||
DOI: | 10.1061/(ASCE)BE.1943-5592.0001435 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 29 April 2019 | ||||||||
Date of first compliant Open Access: | 21 May 2019 | ||||||||
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