The Detection And Control Reinforcement Of Bei Chai Hyperbolic Arch Bridge

In this paper,,the study is the hyperbolic arch bridge reinforcement technology,by the calendar around the city of Jinan City Chai North this hyperbolic arch bridge is the bridge from the disease start with arch bridge. this bridge through the system testing, comprehensive analysis of various reinforcement technology, Finalization of the bridge strengthening programme. The full text is divided into four chapters, including chapters II and III as the focus of this paper, the third chapter to the core of the paper.The first chapter introduces a bridge between the types of diseases, and bridge the various causes of a disease, then leads to hyperbolic arch bridge of the main diseases and their causes. Disease research and analysis on the bridge structure of the bridge and the bridge structural damage disease after its reinforcement of the necessity and purpose and significance. The final chapter of this paper, the work done by a brief introductionChapter II are the main contents of the North Chaiqiao Analysis. The first chapter of the basic situation in North Chaiqiao were introduced and then passed to the North Chaiqiao,detection system, the whole bridge was defective partsinspection,component concrete strength steel corrosion test results and the test results through integrated data-processing and Analysis, the bridge has been detected conclusions. That is, the bridge sank in the vault, the main Arch apparent displacement, the main load-bearing structure of the concrete strength has been inadequate, structural strength, stability can not be achieved passage of the normal safety requirements. According to bridge the final test results, the North Chaiqiao have the disease causes a detailed analysis. Overall, the Chaiqiao disease was mainly due to the design of vehicle design load considered too small, leading to inadequate bearing capacity of the bridge. Taking into account the adverse effects of the natural environment and the lack of routine maintenance measures, especially in recent years with the increasing volume of traffic, the number of overweight vehicle overloading the structure of the bridge structure even more serious diseases that must be implemented immediately to the reinforcement of the bridge.Chapter III is the core of this paper,,focusing on the North Chaiqiao the reinforcement measures.This chapter introduces the first section of the North Chaiqiao the reinforcement programme, including the reinforcement of the main arch ring, the abdominal Arch arch of the foot positions and the reinforcement of abdominal Arch upper side wall of concrete cracking, and other parts of the reinforcement, This section details the various parts of the purpose of strengthening and reinforcement measures. North Chaiqiao second major study of reinforcement and strengthening of the process. This section focuses on the process and paste the planting-bar of steel, and bridge deck reinforcement blocks reinforced and repaired with a C30 concrete mix design. Section III use of finite element software MIDAS / Civil on the main north Chaiqiao Arch steel reinforcement of a simulation analysis, obtained by the MIDAS simulation of the Arch deflection and stress map indicates that the steel tube sets can be an effective reinforcement Arch , Steel reinforcement can be used to reduce the Arch deflection about 30 percent, reduce stress more than 30 percent. Finally come to a paste steel reinforcement of the Arch is feasible conclusions. The final chapter of the other reinforcement techniques were briefly introduced, respectively, on the concrete reinforcement technology outsourcing, CFRP reinforcement technology, sprayed concrete reinforcement anchor in vitro technology and prestressed reinforcement technology.Chapter IV is to sum up and Prospects.