The Research Of Steel Column Cantilever Beam Composite Trestle Applied In The Curve Steel And Concrete Composite Beam Construction

With the rapid development of urban modernization in our country, city trafficespecially cause of urban bridge has been greatly improved. In order to addressgrowing traffic congestion in the city, construction of urban overpass bridge, viaductin heavy traffic areas to achieve the purpose of directing traffic. Status which islocated in four loops East of Liu Xiang Bridge across new construction of PuhuangyuHighway is one representative of one of the four loops, four ramp bridge of mainbridge of loop interchange, Z1, Z3ramp bridge across four loops of parts are made ofsteel box-concrete composite beam structure. Because the four loops to city arteries,interrupt status traffic is not allowed in the course of construction, at the same time tominimize the construction occupies an area of, and to mitigate the impact on trafficsituation, using traditional construction methods do not meet the constructionrequirements of the project. To resolve this problem, need to come up with a can solvethe practical problems in engineering, but also in the future popularization andapplication of bridge construction and bridge of its kind techniques is the key to thissubject.In addition, bridge construction there is always a certain difference between theactual state and the ideal State, cause of errors including error, material properties,construction of temporary construction loads, and many other factors. This differenceoften leads to finished dead state of the bridge line, stress condition and design of thetarget deviation, affect the normal use of the bridge in the future. In order to reducethe impact of errors, while ensuring safety during bridge construction needed inbridge construction monitoring during the construction of bridges. Therefore, thestress control and linear control in construction stage of the implementation targetbecame the subject of another key.This topics relying on Puhuangyu fast road across four loop overpass Z3rampbridge, according to four ring interchange construction technology of implementationprocess, carried out steel column suspended arm beam combination bracketconstruction technology, the technology may solve long-term plagued city bridgeconstruction in the due to set temporary support pier on status traffic of interference,and increased city traffic pressure and appears of many technology problem and socialproblem, implementation does not interrupt traffic State Xia of fast construction target,project research on promoting capital traffic industry of development has important ofpractical significance.