Công nghệ xây dựng cầu nhanh

Công nghệ xây dựng cầu nhanh

ADVANCINGACCELERATED BRIDGECONSTRUCTIONPresented atGeneral SessionAASHTO HSCOBS MeetingbyBenjamin Tang, FHWA Co-ChairMary Lou Ralls, AASHTO Co-ChairPrefabricated Bridge Elements and Systems Scan TeamJune 29, 2005 FOCUS AREAS - REVISITMinimized traffic disruption(Congestion)Improved work zone safetyMinimized environmental impactsImproved constructibilityImproved product qualityLower life-cycle costs FHWA VITAL FEWCongestionSafetyEnvironmental impact CATEGORIES OF TEAM’S10 RECOMMENDATIONSMovement SystemsSuperstructure SystemsDeck SystemsSubstructure Systems OPPORTUNITIES AHEADProposed Programs in Reauthorization• Innovative Bridge Research andDeployment (IBRD)• Highways for Life• Federal Bridge Program ($4 B/Yr.) Life After Scan - Next StepsDisseminate Report (Hot off the press!)Implementation Plan (STIP) – AdvancingTeam’s RecommendationsOngoing Technology Transfer ActivitiesCompiling Connection DetailsDeveloping Decision-Making Framework State Bridge Engineers’Survey Prefabricated Bridges to Accelerate ConstructionSurvey to Sample State Bridge EngineersQuestions: Barriers to routinely install PBES in hours ordays? What would help most to use PBES? Prefabricated Bridges to Accelerate ConstructionSurvey to Sample State Bridge EngineersQuestion: Barriers to routinely install PBES in hours ordays?Example Responses (lack of education / training /experience): Education of DOT and contractors. Training. Contractors are reluctant to bid on technologies,methods, or equipment with which they areunfamiliar. Engineers do not feel they are knowledgeable ondesigning projects for rapid construction.Exposure to / experience with large prefabsystems. Prefabricated Bridges to Accelerate ConstructionSurvey to Sample State Bridge EngineersQuestion: What would help most to use PBES?Example Responses (education / training / moreprojects): Training for contractors and owner inspectors(shop and field site). Projects in the U.S. that demonstrate rapid bridgeinstallation would provide examples and increaseinterest by State DOTs. More knowledge gained through experience. Education for design engineers and contractors. Information on how and why. 123doc.vn