Analysis Of Design Parameters Of Small And Medium Span Simply Supported Beam Bridge

In recent years,the transportation in our country with the development of economy andsociety has been rapid development, railway and highway mileage increasing, graduallyimprove the highway grade, high standard railway began large-scale construction, andtransportation industry in the national economic life is playing a greater function. A varietyof bridge structure at present in our country, the construction of the vast majority of reinforcedconcrete and prestressed concrete structure. In the design of bridge structure, in order toincrease the structural safety and economy, which makes the designof bridge structure is safeor material saving too much lead to low degree ofstructural safety. The rationality of thestructure design of the bridge, directly related to the safety, economy and durability of bridges.Adapt to the bridge design and traffic characteristics and trend of development.In the bridge design, design parameters, a series of indicators on the bridge design andeconomic investment play a controlling role, with the appearance of bridge design andoptimization problems, is worth discussing how to use design parameters control design andoptimization index. If the design index is too low or too high will cause the bridge designunreasonable, very easily lead to accidents or a waste of money. So the research of mediumand small spanbridge design parameters is very necessary.Effects of main design parameters for the bridge design index. Analysis of designparameters, to study its change trend. Provide a reference for the design of index, can be apositive effect on bridge design work.