溫度應(yīng)力對門式剛架輕鋼結(jié)構(gòu)影響的研究.pdf

1、沈陽建筑大學(xué)碩士學(xué)位論文溫度應(yīng)力對門式剛架輕鋼結(jié)構(gòu)影響的研究姓名：申情申請學(xué)位級別：碩士專業(yè)：建筑與土木工程指導(dǎo)教師：賈連光;由世歧2009-02碩士研究生學(xué)位論文 Abstract III A b s t r a c tThis paper is based on an actual light- weight structure with gabled frames, which the cross- b

2、racing between columns produce large deformation，then we analysis the mechanical behavior of the structure under various load and temperature stress. The light- weight structure with gabled frame

3、s is one kind of common structures in the single- layer workshop, In recent years, it developes rapidly as it uses the steel quantity few, self-possessed lightly, construction speed quick, syn

4、thesis economic efficiency higher and so on. The theory for calculate gabled frames over static load has become more and more mature, but various engineering accident may happy because of certa

5、in factors ill- considered. So in order to minimizing the possibility of incidents, we need sum up experience constantly. According to the design of single- plant steel structure in “ Steel structure desi

6、gn specification“(GB 50017- 2003), temperature section size in plant says as follows: the house in heating housing and non- heating zone, it is 220m in vertical; the house in hot workshop and h

7、eating areas of non- heating housing zone, it is 180m in vertical; in open- air structure, it is 120m in vertical. The temperature stress can not be calculated if the temperature section size

8、 is within the limit above. The vertical length of the project in this text is 150m,it meet the specification requirements that the temperature stress can not be calculated, but local longitu

9、dinal stiffness increases in some part of this project, there is no provisions whether calculating the temperature stress or not in our recent specification. Through the ANSYS finite element sof

10、tware, we calculate the actual project under various load conditions. Analysis the result, we find that it works well if not considering the temperature effect, but when we calculate the tempe

11、rature action on the project, local damage happens in the support and the column may buckling, this destruction form is in line with the actual failure. To take the problem, we propose some

12、 solution to reduce the temperature stress and provide future reference for similar problems. The main content in this text includes: 1. Propose the basic assumptions for calculation. Select the

13、 appropriate element type and calculation method. Establish the overall calculation model of the actual project through the ANSYS finite element software. 2. Calculate the structural stress and d

14、eformation of the actual project under the design load, and compare the result with the actual result, make recommendations on possible causes of damage. 3. Make the temperature load as the ma

15、in research subject, calculate the structure under overall uniform temperature change and local temperature changes not uniform two aspects, research on temperature distribution in the plant struc

16、ture, conclude temperature conditions when the structure fail and compared with the actual working conditions, then come to the conclusion 4. Based on the plant model, using ANSYS finite elemen

17、t software, we change the layout of the form of local structure and establish new models. Like the original structure through the calculation of contrast, to seek solutions for similar problem