Study Of Construction Monitoring And Control Technique For Low Tower Cable-stayed Bridges

Low Tower Cable-stayed Bridges also known as partial Cable-stayed bridge. Itis a new Bridge structure. It is neither ordinary girder bridge nor traditional flexiblecable-stayed bridge. Its mechanical behavior is in between the two sides. Dosedbridge is the combined bridge of tower, girder, pier and Search four basiccomponents. Different combinations will produce different structuralcharacteristics. Through the main control section of the bridge construction processstress, deformation, such as cable force measurement，construction monitoring willbe the practical test of the structure and on-site analysis techniques used inconstruction，it use the actual construction process，form a complete system ofstructure calculation and analysis, monitoring and feedback control.Through the construction site of the structural testing，tracking calculationanalysis and bridge state prediction to come to reasonable feedback controlmeasures, making the structure internal force in The construction processreasonable. Ensure the Structural deformation within the allowable range, and thestructural safety and stability of the structure construction process. It provide adecision-making Technical basis for The construction process, in order to providedata for Structural behavior control, in order to properly guide the construction,make sure that axis and the deck line meet the design requirements, and makes thestructure of the internal force distribution and the designed ideal state of the bridgestructure internal force is consistent. And it ensure that the bridge constructionsafety and normal operations.In this paper, in the construction of a low tower cable-stayed bridge sitemonitoring, the main research works included in the dissertation are as following:1.Research Low Tower Cable-stayed Bridges monitoring theory andmonitoring methods, in order to ensure that the bridge construction to meet thedesign requirements.2.According to the main bridge design drawings and The proposedconstruction program to establish the finite element model of the constructionphase through the Midas civil. Determine the pre-camber in the construction process， the stress of the main beam and the linear control. Psychologistsanalyzed the Hanging Basket reinforcement on bridge monitoring3.With Monitoring data and theoretical values obtained through the modelcalculations, analysis of the state of construction process and security ofcable-stayed bridge construction.4.To build on the6th block solid model using the Midas FEA, than establishthe full-bridge model by Grillage method. It analyzes the characteristics andapplicability of the various modeling methods.