| Steel-concrete composite beam(hereafter composite beam foe short ) is a new type of beam structure ,which is developed from steel structure and concrete structure. It usually connect the steel beam and reinforced concrete board together through shear connector and to resist bend together. Two kinds of materials are conbined together according to the form of composite beam, can avoid the corresponding shortcoming , give full play to the advantages of two kinds of materials, and form a structure with high load-bearing capacity, great rigidity , with good ductility. Our country has studied and used composite beam in field of traffic , metallurgy , electric power, colliery since the fifties of the 20th century,and have made a series of achievements with important theory meaning and practical value. But all study and application of composite beam only in simply supported beam and continuous beam, research on composite frame beam is still lack at present.This paper proposes a new tectonic model of composite frame beam, analyse three results of scientific experimental study , finite element analysis, theoretic calculate based on active code,security and practicability of the tectonic model of composite frame beam have proved. Apply research results to some steel structure project finally.The full text divides into 7 chapters altogether.Chapter 1,the author introduces the document survey, analys the characteristic of composite beam, the direction mainly of development and study in our country, proposes a new tectonic model of composite frame beam, and points out the meaning and research approach of this paper.Chapter 2, the author introduces the purpose of scientific experimental study, test device arrangement ,loading project and measure position , and deals with and analyse the test data, which offer the basis for following further research.Chapter 3, the author introduces finite element analysis of the test model,which including treatment of modeling, the choice of the finite element , meshing and loading. analyse to the result of calculation finally.Chapter 4, the author introduces the calculateing based on composite theory of coad,which including the section converting , the internal force calculateing, strain and displacement calculateing, introduce the analysing and processing of result finally.Chapter 5, the author introduces comparative analysis to the data, summarizes the conclusion of test and calculating..Chapter 6, the author introduces the situation that the composite frame beam applied to the real project , finds some solution to relevant problems in structure designing, which accumulate experiences for the application of the research results.Chapter 7, the author summarizs the main conclusion of reseach work and points out the research direction of composite frame beam in the future. |
