The Safety Evaluation And It’s Engineering Application Of The Existing Steel Structural Footbridge

With the rapid development of the city and the growing population,the bridge is an indispensable link in the transportation hub.Although traffic lights and zebra crossings have been set up at the junction of the road to ease traffic pressure,traffic accidents are still frequent.Many pedestrians crossing the road,in order to catch the time,do not take the zebra crossing,many drivers in the process of driving,not to comply with the rules of traffic,frequency of traffic lights and traffic lights,causing a lot of traffic tragedy.In order to save the discrete because of the traffic accident or tragedy of the family,we try to find a more reliable way to solve the problem of pedestrian crossing.The road was set below ground level or the establishment of road bridge in the top of the road,you can quickly solve these problems,but also can provide convenience for pedestrian crossing.Therefore,in the construction of the city,more and more city builders are content to build more pedestrian bridge.However,the bridge also experienced the development of a certain period of transformation,from the original simple wooden bridge to the iron bridge,followed by the reinforced concrete bridge.With the development of economy,the use of building materials also has great changes,people now use more to the number of steel pedestrian bridge.The steel structure is lightweight,durable,and can save construction time,and make it easy for construction,so it is more and more popular with engineers.Due to the increase of city population,which stands in the city of steel structure bridge to bear the load of humanity is also increasing,coupled with the steel structure because of the long-term exposure to the outside world,must go through the rain erosion and other natural conditions exposed to the weather,damage.In the face of increasing load and damage due to natural causes,the concern is that after a long period of use,the bridge will bear,its security has become one of the people most concerned about this.In order to maximize the help people solve these existing doubts,we use the experiment method to explain,to determine whether the end use of steel pedestrian bridge to meet the requirements of people through the use of test.Verified by visual observation test and load test,determine the steel pedestrian bridge is not reliable performance,has estimated the durability and safety performance.Surprisingly,the need to bear more load with the steel structure manufacturing of the pedestrian bridge,so its safety and affordability range so that we most care about.The subject of the use of test research and application of the theory as a support,the comprehensive judgment of this form and the structure of the overpass is really safe,whichgives the related conclusion.Aiming at this phenomenon,Suzhou Huaxia pedestrian bridge as the research object,to evaluate its detection technology,and gives the suggestion of strengthening.Specific contents are as follows:According to the specification of steel pedestrian bridge detection and assessment of the existing relevant provisions of the industry rules,combined with the evaluation method of safety performance of the bridge,according to the evaluation idea of experience and determination procedures,using reasonable testing methods,inspection standards,by Dr.bridge,finite element simulation and computer aided software,make the scene detection Suzhou Huaxia pedestrian bridge,including bridge and detection of appearance detection system,so as to make a reasonable evaluation of the performance of steel pedestrian bridge.