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In the construction of concrete filled steel tubular arch bridge, the bearing performance of scaffold is the key to the project. Based on the actual situation of the bridge across the HuangYan highway on the Bao-Xi railway corridor, the full support openings construction method is adopted and firstly set up the beam then the part of arch. The design method of construction scaffold and doorways beam...
Through the study of construction force of the work plateform steel-pipe piles on the Sanmenkou crossing sea bridge, the load-bearing calculation methods of the steel-pipe piles in the deep sea foundation were determined, the contents, the methods and the major factors in analyzing the strength and stability at the stage of the construction and use were determined.
The structure safety is numerically studied on main support of the huge pirate ship by use of finite element method (FEM). In order to the elements meshed successfully, the equivalent treatment is used for the complex structure. The static, structure instability and model analyses are carried out. The static and stability safe coefficient are 6.12 and 19, respectively, which are more than the demand...
Initial stress is produced in the construction of concrete filled steel tube (CFST) arch bridge. According to the construction sequence of CFST arch bridge, using the method of the body-space beam element with initial stress in the calculation of the bearing capacity of dumbbell-shaped CFST arch bridge, this paper calculates the bearing capacity of three dumbbell type ribs, analyzes the law of the...
With the establishment of the mechanical model of the gantry sign, we analyzed the major factor of the gantry sign design by investigating the strength, stiffness and stability of the beams, columns and the danger points respectively. We also give an explicit example, which shows that just considering the design of the structure strength, rigidity and stability is not enough, and it's necessary to...
Buckling analysis of structures can be divided into eigenvalue buckling analysis and nonlinear buckling analysis. In this paper, the basic theory of eigenvalue buckling analysis and nonlinear buckling analysis has been described, then using ABAQUS to do eigenvalue buckling analysis and nonlinear buckling analysis on structural elements of an actual project which have prestress, and comparing their...
The steel box beam in the Gulf Bridge adopts huge segment lifting construction method, with steel tube falsework as a temporary bridge pier. In this paper, established the finite element model of the steel tube falsework, determined the relevant calculation parameters according to the applicable bridge codes, calculated working conditions and the load, and analyzed the stability of the falsework....
The axial load is generated for 64m and 80m lift masts under the state of vertical hoisting, so it is needed to analyze the total strength and stability of the lift mast to ensure the hoisting security before formal application. Critical load of linear elastic buckling is computed for 64m and 80m large lift mast under the condition of inclined steel cables on the top by the use of nonlinear FEM method...
The plastic buckling calculation of the centrifugal concreted-filled steel tubes under torsion was derived from the cylindrical shells with spiral stiffeners analogy. In applying the analogy, it is assumed that under torsion, concrete compression parts between the diagonal cracks work as spiral stiffeners of steel shells, based on the plastic performance and mechanism of the tubes under experiment...
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