Control Means Research Of The Cable Of Suspension Bridges

Suspension bridge has a unique form of cable bearing structure,the characteristics of its magnificent modelling and long-span capacity,make suspension bridge become the preferred structure of the municipal bridge or which is across the gulf,river.The use of a large number of Precast structure in modern suspension bridge construction making the construction time of suspension bridge period shorten quickly,but the Higher construction accuracy requirements for suspension bridge construction was followed,Unique cable bearing structure also makes suspension bridge have strong geometrical nonlinearity characteristics,and those characteristics also make it become more difficult to the construction precision control of suspension Bridges.This paper briefly discusses the key working procedure in the process of suspension Bridges construction,focus on the analysis of cable construction,which is the key construction step of suspension bridge construction,discussed the calculation method of cable construction control.Combining engineering examples to verify the proposed calculation method and control measures.And presented some supplementary project of suspension bridge construction control on the analysis results.In this paper,the main work done is as follows:First of all,based on the main construction process of suspension Bridges,this paper focuses on analysis of suspension bridge main cable construction is the main step bad points,based on the research of the construction process comb out of the main cable erection construction of the main work is the suspension bridge main cable shape control.On the basis of the calculation theory of suspension bridge construction control are discussed in this paper,introduced considering tower deviation,the temperature and the influence of the main cable shape iterative equation,is derived with the consideration of after the correction formula of the datum strand cable.Second,inch beach Yangtze river bridge as the engineering background,combined with the construction control calculation of engineering examples are calculated,based on the calculation results,the design value of contrast the correctness of the calculation method is verified.In the process of engineering calculation considering most of the construction process of the actual parameters,the calculation model for the correction,improve the precision of calculation.In view of the actual temperature and the cable tower deviation during construction and calculation of the erection,according to the obtained considering temperature and cable tower deviation correction formula for the datum strand cable after the cable of the formula to calculate the inch beach Yangtze river bridge main cable linear coordinate datum strand.Again,the computation found some problems in the process of addition to the content of the suspension bridge construction control,and put forward the construction control of suspension Bridges the adjust the concept of domain and the influencing factors control field,and according to the pool of possible problems in the process of Yangtze river bridge construction assumptions were made.Finally,according to the calculated results in the content of the suspension bridge construction control are put forward to strengthen control over cable casting geometric dimensions and material properties of advice.