Double-curvature Arch Bridge Main Arch Ring Crack Disease Analysis And Reinforcement Method Of Research

Built in early reinforced concrete double-curvature arch bridge, because the early, widespread architectural design load is low, the arch ring, GongBo craze, arch board problems such as seepage. Structure security and stability are great hidden dangers. In addition, long-term overloaded operation of the main arch ring diseases caused by, serious have affected the normal use of Bridges. Paste steel method can improve the bearing capacity and rigidity of original structure, closed the cracks, enhance the component members anti-cracking and stability. Look from principle, paste steel method suitable for reinforced concrete double-curvature arch bridge the consolidated, and in engineering practice has been widely.This article in view of this situation, the key made the following several aspects of work:1. In reference to a number of literature material and field survey, and on the basis of summarizing the highway of reinforced concrete double-curvature arch bridge of common diseases form and analyzes the reasons of these diseases, gansu province, part of both highway reinforced concrete double-curvature arch bridge the crack width, cracking parts and arch ribs statistics of the strength of concrete arrangement, understand disease extent.Discusses using space beam element method to establish the double-curvature arch bridge finite element model is established.Through, a finite element model respectively from mechanical angles diseases, horizontal clapboard arch rib diseases, GongBo and arch boardDisease causes analysis.Discuss double-curvature arch bridge strengthening basic principle, taking a real bridge reinforcement engineering, to one solid bridge USES stickup justBoard method are strengthened, this paper discusses their reinforcement design points and construction craft.5. A real bridge reinforcement engineering for example, spot load test for reinforcement effect was evaluated.This essay selected topic directly grounded in urgent problems to solve, and closely combining the current based on the highway transportation system objectives-a safe, convenient and fast, achieve can improve double-curvature arch bridge carrying capacity, make its continue to better the purpose of the role. Although the reinforcement of double-curvature arch bridge at home and abroad have conducted a lot of research in gansu province, but so far the specific environment conditions of double-curvature arch bridge lacks a system and comprehensive theoretical summary. Hope that through this paper discusses double-curvature arch bridge reinforcement measures, the reinforcement of similar Bridges provide certain guidance and reference.