Continuous Rigid Frame Bridge Construction Control Static Analysis And Program Designing

Continuous Rigid Frame Bridge is the main form of the large-span bridges. It has some strongpoint such as large span, comfortable driving and economic cost. Now large span Continuous Rigid Frame Bridge is constructed one section by one section in the way of cantilever. The control factor in the construction is how to calculate the construction stress and deformation. Author write the Continuous Rigid Frame Bridge Construction Control Static Analysis Program to solve this question.This paper adopt finite element method in forward construction way. The program stimulate bridge section with plane bar element and reckon in the creep, shrinkage and construction nonlinearity in construction calculation. Author write the Continuous Rigid Frame Bridge Construction Control Static Analysis Program with VB language.This paper introduce the finite element method and the program flow. fitting the criterion' s the creep and shrinkage calculating method in different fit model get the program arithmetic about the creep and shrinkage. According to the creep and shrinkage different effects on static and stoically Indeterminate structure construction , the module is written in the program. Adopting the increment method calculates the structure nonlinear, this make the program has the function of calculating structure linear and nonlinear. The program can stimulate factors adding and losing such as the bridge structure' s element, prestress load and other loads, the boundary restriction and so on . The program can calculate the Continuous Rigid Frame Bridge Construction Control Static Analysis but also other structures those can be calculated by the plane bar model such as plane rigid frame, plane frame , rigid frame bridge ,continuous beam bridge , arch bridge , the cable stayed bridge and so on .The program calculating result is considered reliable throughthe comparing with the standard program result and the measured datum in the site . The calculating result' s accuracy satisfies the engineering demand . So the program has application value .