Study On The Deck Design Method Of Steel Box-Concrete Composite Continuous Rigid Frame Bridges

Based on west traffic construction scientific item "steel-concret composite arch bridge key design and construction of erect rotation"and national natural science fund item "study on analysis method of steel box-concret composite arch" leaded by professor ZhiXiang Zhou, proposed "steel box-concret continuous rigid frame bridge"。based on Xiao Wan ridge at Yunnan, studied the structure of bridge deck、 longitudinal and transvers prestress tendon layout、transverse connection of bridge deck, and obtained result as follow:Based on supporting project Xiao Wan ridge, whole design is did as steel box-concret continuous rigid frame bridge, analysed and proved feasibility and rationality of this schem from bearing performance、construction technic、economic index。Based on it’s structure and bearing character, study out structure size; under the premise satisfy bridge deck bearing capacity, optimize bridge deck with section material minimum aim function; based on before analysis result and criterion, proposed longitudinal and transvers prestress tendon design method。Proposed a transverse connection form of bridge deck, established solid finite element model of transverse connection form of bridge deck using abaqus, analysed transverse connection rabbet hole stress and displacement bearing performance; established solid finite element model of twi-pull longitudinal prestress tendon, studied stress distribution at anchor area, simply understanded force sending of longitudinal prestress tendon in the bridge deck。...