Main Article Content
STRAND TENSION CONTROL IS ESSENTIAL IN SUSPENSION BRIDGE SAFETY. HOWEVER, FEW QUANTITATIVE STUDIES HAVE EXAMINED THE BENDING RIGIDITY AND BOUNDARY CONDITION BEHAVIOR OF STRANDS IN THE ANCHOR SPAN OF SUSPENSION BRIDGES BECAUSE OF THEIR SPECIAL STRUCTURE AND COMPLEX CONFIGURATION. IN THIS PAPER, A NEW CALCULATION METHOD FOR STRAND TENSION IS EXPLORED BY USING DYNAMIC BALANCE THEORY TO DETERMINE THE EFFECT OF BENDING RIGIDITY AND BOUNDARY CONDITIONS. THE ACCURACY AND EFFECTIVENESS OF THE PROPOSED METHOD ARE TESTED AND CONFIRMED WITH VERIFICATION EXAMPLES AND APPLICATION ON NANXI YANGTZE SUSPENSION BRIDGE IN CHINA. THE RESULTS INDICATED THAT ONLY LOW-ORDER FREQUENCY CALCULATION COULD BE USED TO CALCULATE THE STRAND TENSION WITHOUT CONSIDERING THE EFFECT OF BENDING RIGIDITY TO ENSURE CONTROL ACCURACY. THE INFLUENCE OF BENDING RIGIDITY ON THE CONTROL PRECISION IS RELATED TO THE TENSION AND THE LENGTH OF THE STRANDS, WHICH IS SIGNIFICANTLY DETERMINED BY THE SPECIFIC VALUE BETWEEN THE STRESS RIGIDITY AND THE BENDING RIGIDITY. THE UNCERTAIN BOUNDARY CONDITIONS OF THE ANCHOR SPAN CABLE, WHICH ARE FIXED BETWEEN CONSOLIDATED AND HINGED, ALSO HAVE A MAJOR EFFECT ON THE CONTROL ACCURACY. TO IMPROVE THE ACCURACY OF STRAND TENSION CONTROL, THE LEAST SQUARES METHOD IS PROPOSED DURING THE TENSION CONSTRUCTION CONTROL OF THE ANCHOR SPAN. THIS APPROACH CAN SIGNIFICANTLY IMPROVE THE ACCURACY OF THE TENSION CONTROL OF THE MAIN CABLE STRAND. SOME RECOMMENDATIONS FOR FUTURE BRIDGE ANALYSIS ARE PROVIDED BASED ON THE RESULTS OF THIS STUDY.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).