Cable-catenary arch bridge load test vehicle arrangement method based on internal force influence line

The invention discloses a cable-catenary arch bridge load test vehicle arrangement method based on an internal force influence line. The method comprises the steps of 1, deducing a catenary arch structure expression; 2, the arch axis curve differential is expanded through a Taylor formula, and an ar...

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Hauptverfasser: HAO TIANZHI, HOU ZHIYAO, NING JIEJUN, PAN WANYU, CHEN QIFENG, LONG XIAYI
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a cable-catenary arch bridge load test vehicle arrangement method based on an internal force influence line. The method comprises the steps of 1, deducing a catenary arch structure expression; 2, the arch axis curve differential is expanded through a Taylor formula, and an arch bridge catenary equation and an approximate expression of arch axis accurate differential are obtained; 3, obtaining an internal force analytical expression of the arch section; and 4, calculating the section bending moment of the bridge by using an internal force analytical expression, drawing an arch foot bending moment influence line, and obtaining a load test vehicle arrangement position corresponding to the most unfavorable load according to an influence line image. The basic internal force analytical solution of the cable-arch combined structure is deduced, the method has the advantages of being high in precision, convenient to calculate, wide in applicability and the like, the method is applied to a bridg