Study On Construction Control Technique Of Continuous Rigid Frame Bridge

The continuous rigid frame bridges with large span are widely constructed in the southwest areas,as the reason of many advantages of this kind of bridge.the mainspan beam bridge 100 meters to 200 meters,the continuous rigid frame has bigger superiority.For terrain in "V" type of bridge site,continuous rigid frame is often competitive bridge type arch bridge scheme,if the geological situation is not too good.continuous rigid-framed Is often the best choice?such as lower project cost,higher bearing capacity.lower maintenance cost among large span beam bridge.But some diseases of this kind of bridge have been occurring,such as excessive deflection of midspan,the web cracking and so on.Only strict control of all aspects of construction,the construction precision enhancement of bridge construction plan,adjusting the unreasonable timely,found that the construction deviation of each process,by controlling the rational and effective means,to improve the quality of will of continuous rigid frame bridges to a higher level,enhance the efficiency in the use of funds.The paper is set in a span of 105 meters of engineering construction for continuous rigid frame bridge,mainly studing and analyzing the following aspects:? Use one plane finite element software to theoretically calculate and analyse the frame on construction.? Do the experiments of related materials,including shrinkage and creep of the concrete.? Analyse the deformation of the bridge on construction.?Monitor the stress of the bridge on construction.? Analyse and study the measured result and therotical calculation value.? Give reasonable proposal to designing and construction of relevant bridge.This article through to a bridge project construction monitoring for the summary of the results obtained,to guide the construction effectively,in addition to completed the construction of the bridge,also have reference to other construction of long span continuous rigid frame.The bridge construction monitoring content is relatively rich and perfect,the technique of multiple measures,for design and construction are adjusted to a certain extent,reflects the real monitoring role in bridge construction.Through the above research work,also more fully proved that the continuous rigid frame bridge construction of effective monitoring for the significance of engineering quality control.