預(yù)應(yīng)力鋼箱梁與混凝土組合梁受力性能研究.pdf

1、沈陽建筑大學(xué)碩士學(xué)位論文預(yù)應(yīng)力鋼箱梁與混凝土組合梁受力性能研究姓名：姜磊申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：王連廣2008-01摘 要 碩士研究生學(xué)位論文 II Abstract The p re- stressed force composite beams of steel and concrete with integrate the modern pre- stressing technology

2、 into the traditional composite beam of steel and concrete, which show evident economic and social advantages and possess great extensive prospect in bridge and building. Putting the pre- stress

3、ed force in the steel of composite beams can expand elastic of materials, raise load- bearing capacity and steady of structure, save the materials, reduce the cost, increase the fatigue strengt

4、h and reduce deformation of structural members. Putting the pre- stressed force in the concrete slab, prevent the expand of the crack, add the rigidity of the composite beams, reduce the scope

5、 of stress and strengthen the service life of the composite beams. Recently, many civil engineering scholars pay attention to the research of the pre- stressed force composite beams performance, it has been stu

6、died more about the pre- stressed force composite beams of steel and concrete .But it is inchoate both at home and abroad, furthermore, the work is mainly focused on I- section beam. Therefore,

7、it is important to out series of research work about pre- stressed force composite beams of steel box and concrete for the practice of engineering. In this paper, the pre- stressed force compos

8、ite beams of steel box and concrete are researched from theory and numerical analysis. The major results are summarized as follows: The pre- stressed force composite beams of steel box and con

9、crete on bearing positive moment, the stress analysis method is defined in the stage of construction, elastic and the limit state. The calculating formulas of load- bearing capacity are given.

10、The results of calculation and testing are contrasted. The stress analysis method and calculating formulas of load- bearing capacity are given of the pre- stressed force continuous composite beams

11、 and a solid continuous composite beams- composite beams of pre- stressed force concrete slab and concrete- filled steel box on negative bending moment area. The calculating formulas of axle stre

12、ss and deformation subjected to slip effect of the interface of the pre- stressed force composite beams of steel box and concrete are established by energy method. In this paper space finite

13、element software ANSYS is applied to the nonlinear calculation of the beams. The load- deformation curve and the load- slip along the span of girder are obtained. Key word: pre- stressed force ；