Determination and Implementation of Reasonable Completion State for the Self-Anchored Suspension Bridge with Extra-Wide Concrete Girder
Open Access
- 25 June 2019
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 9 (12), 2576
- https://doi.org/10.3390/app9122576
Abstract
The present work is aimed at studying the determination method and implementation process of reasonable completion state for the Hunan Road Bridge, which is currently the widest concrete self-anchored suspension bridge in China. The global finite element model and the cable analytic program BNLAS were integrated. The synthesis algorithm of completion state determination was proposed. The contact relationships between the cable and saddles were captured using the refined FE discretization method. The concrete shrinkage and creep effects during the construction and operation periods were predicted using the CEB-FIP 90 model and the age-adjusted effective modulus method. The cable alignments under the free cable state, system transformation condition, and completion state were obtained. Moreover, the multiple-control method for the whole process of system transformation was proposed. The multiple parameters included the hanger tensioning force, exposed amount of hanger anchor cup, and tag line position. A detailed system transformation procedure was formulated and well preformed in the construction site. In addition, the further optimization analysis of final hanger force was conducted based on the actual completion state. The influence on the stress and geometry evolution of girder brought by the final girder alignment was investigated. The measured results of structural alignment and stress show that the target completion state was well implemented. The accuracy and efficiency of the proposed multiple-control method were verified by checking the tag line position of each step. In addition, the optimized final hanger force and girder lifting amount were obtained, which can provide feedback and reference for the construction control and service safety of the similar concrete self-anchored suspension bridges.Funding Information
- National Natural Science Foundation of China (51278104)
- Fundamental Research Funds for the Central Universities (30919011246, 2011Y03, 20133204120015, 12KJB560003)
This publication has 17 references indexed in Scilit:
- A Wireless Sensor Network Using GNSS Receivers for a Short-Term Assessment of the Modal Properties of the Neckartal BridgeApplied Sciences, 2017
- Cable Force Health Monitoring of Tongwamen Bridge Based on Fiber Bragg GratingApplied Sciences, 2017
- Cyclic Crack Monitoring of a Reinforced Concrete Column under Simulated Pseudo-Dynamic Loading Using Piezoceramic-Based Smart AggregatesApplied Sciences, 2016
- Analytical method for main cable configuration of two-span self-anchored suspension bridgesSTRUCTURAL ENGINEERING AND MECHANICS, 2009
- Determination of hanger installation procedure for a self-anchored suspension bridgeEngineering Structures, 2006
- Suspension Cable Design of the New San Francisco–Oakland Bay BridgeJournal of Bridge Engineering, 2004
- Non-linear shape-finding analysis of a self-anchored suspension bridgeEngineering Structures, 2002
- A curved element for the analysis of cable structuresComputers & Structures, 1981
- A finite element approach for cable problemsInternational Journal of Solids and Structures, 1979
- Analysis of cable structuresComputers & Structures, 1979