Study on Influencing Factors of Construction Control of Steel-Concrete Composite Beam Continuous Rigid Frame Bridge
Taking the north navigable span bridge project of Zhoushan Port Sea-Crossing Bridge in Ningbo City,Zhejiang Province as an example,the finite element model of the bridge is established by Midas civil software.The geometric shape parameters,cross-section characteristic parameters,time characteristic parameters,load parame-ters and material characteristic parameters are selected as construction control parameters.And the sensitivity anal-ysis of construction control parameters is carried out based on the bridge construction technology.The analysis re-sults show that the complete bridge stage and the structural stress are easily affected by the two types of construction control factors of the initial control prestress of the prestressed steel beam and the concrete weight;During the con-struction process,the bearing jacking construction technology is used to adjust the bridge structure alignment,which will cause the sudden change of the sensitivity analysis results of the initial control prestress parameters and the annual average relative humidity parameters at the bearing jacking position.The research results can provide reference for the construction control of steel-concrete composite beam continuous rigid frame bridge.
continuous rigid frame bridgesteel-concrete composite beamconstruction control parametersensi-tivity analysis