The Study On Feasibility Of Rib Concrete Winter Pouring Of CFST Arch Bridge

Since making best use of advantages of concrete and steel, CFST structure is characterized by high bearing capacity, good ductility and toughness, convenient construction, fire resistance, good economic benefit, and are widely applied in bridge building recently.Further study on concrete In this paper, the feasibility of Concrete Filled Steel Tubular Arch Bridge concrete construction in winter, in-depth study, the method of calculation used and conclusions after the same type of bridge construction in the winter of great reference value.See a number of relevant literature on steel concrete structures and concrete filled steel tubular arch bridge, data, and determine the kinds of structural engineering application in China widely, so any one of the problems that exist in the design and construction process, and technology solutions specific argument have a positive practical significance. In this paper, a concrete filled steel tubular arch perfusion Rib winter temperature in the tube concrete depth analysis of the specific process is as follows:(1) Pouring concrete hydration heat generation mechanism; comparative analysis of various methods of calculation of concrete temperature field, as well as values of various parameters required in the calculation process to determine the implicit solution of the finite element method for solving the perfusion steel pipe Concrete Arch Bridge Concrete is formed by the temperature field.(2) The use of large-scale finite element software Midas Concrete Arch model to simulate the temperature field to calculate the pouring of concrete, on-site corresponding measuring point measured data and theoretical calculations were compared to verify the feasibility of theoretical calculations from the point of view according to its anastomosis again, correctness, calculated on the basis of analysis of the feasibility of wool Ping Bridge Rib pouring of concrete.(3) Through wool Ping Bridge construction monitoring and static and dynamic load test conclusions assessment of the bridge in the health status of the construction process and into the bridge, from another point of argument with finite element method, finite element software to the Midas calculate the arch rib concrete pouring the formation of the correctness of the temperature field.(4) The theory of the dual-angle simulation perfusion Concrete Filled Steel Tubular Arch Bridge concrete theoretical simulation analysis the winter perfusion Concrete Filled Steel Tubular Arch Bridge Concrete feasibility conclusions and recommendations are The positive significance and can be given to the practice of construction of similar projects to provide guidance.