Study Of Construction Supervision For Nancang Cable-Stayed Bridge

The building of the modern large-span cable-stayed bridge makes progress in the designtheory of the structural analysis and the construction technology, meanwhile, it makes theconstruction supervision of the large-span cable stayed bridge become an importantresearch topic.The construction supervision is making the cable-stayed bridge achieve the designexpectation just after construction through controlling the inner force and the line forms ofthe structure in constructing and constructed state. Based on the construction supervision ofthe Nancang cable-stayed engineering, this paper mainly introduces the calculation of theconstruction state in the construction supervision and the stress measurement in the state ofvariable’s measurement.The calculation of the construction state is a course of simulation analysis with certainaccuracy for the construction of bridge and the design state by the reasonable model andthe effective structure analysis method. Through establishing the plane-calculating model,this paper firstly analyses the inner force of the main beam under the rational cable force,then according to the construction characteristics it takes the construction emulatinganalysis to the bridge，since this bridge is an urban overpass acrossing the railway line, thelarge tonnage and multi-step’s beam segment weights makes the construction is verydifficult, meanwhile makes the construction period is very long, so it is very easy toinfluence the licence computer of the railway under the bridge, therefore this paperproposes an optimized construction program which can cancel the beam segment weightsby adjusting the stay cables to cut down construction period, in addition to this, this paperalso makes an research on how to monitor the temperature of Construction in large bearingplatform concrete.