Design methods of headed studs for composite decks of through steel bridges in high-speed railway

Abstract：Aimed at two tyhttps://p.9136.com/1wposite floor systems of through steel bridges in high speed railway, design methods of headed studs were put forward for different composite members through comparing and analyzing the structure, mechanical characteristics and transmission routes of deck loads. The simplified calculation models were brought out for the stud design of the longitudinal girders and transverse girders in the composite floor system of Nanjing Dashengguan Yangtze River Bridge (NDB). Studs were designed and arranged by taking the middle panel of 336 m main span for example. The results show that under deck loads, the longitudinal girders in the composite floor system of through steel bridges are in tension-bending state, longitudinal shear force on the interface is caused by both longitudinal force of The first mechanical system and vertical bending of The second mechanical system, and studs can be arranged with equal space in terms of the shear force in range of 0.2d (where d is the panel length) on the top ends. Transverse girders in steel longitudinal and transverse girders-concrete slab composite deck are in compound-bending state,and out-of-plane bending has to be taken into account in the stud design. In orthotropic integral steel deck-concrete slab composite deck, out-of-plane bending of transverse girders is very small so that it can be neglected, and studs on the orthotropic integral steel deck can be arranged according to the structural requirements. The above design methods and simplified calculation models have been applied in the stud design of NDB. 作者： Author： HOU Wen-qi  YE Mei-xin 作者單位： School of Civil and Architectural Engineering,Central South University,Changsha 410075,China 期 刊： 中南大學學報（英文版）   EISCI Journal： JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY(ENGLISH EDITION) 年，卷(期)： 2011, 18(3) 分類號： U448.121 Keywords： through steel bridge    steel-concrete composite deck    mechanical characteristics    stud    design method    機標分類號： TU3 TJ3 機標關鍵詞： methods of    composite floor    mechanical system    design methods    shear force    longitudinal force    high speed railway    Yangtze River    structure    interface    different    analyzing    slab    range of    typical    results    account    terms    small    span 基金項目： The Science and Technology Development Program of Railways Department,China

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