自密实方钢管混凝土四肢格构柱拟静力试验研究

发布时间：2018-04-12 00:30

本文选题：格构柱 + 自密实技术　；参考：《湖南科技大学》2013年硕士论文

【摘要】：钢管混凝土技术在现代土木工程界得到了空前的应用，此技术因其自身独具的优点得到了工程师们的青睐。国内外许多学者对这一领域进行了多方面的研究，也取得了丰硕的成果。但对于自密实钢管混凝土，尤其是自密实钢管混凝土格构柱的抗震性能研究还不充分，，因此有必要对此进行更深入的研究。本文通过自密实钢管混凝土短柱的轴压试验和理论分析，建立了短柱的承载力计算公式；通过自密实钢管混凝土四肢格构柱的拟静力试验研究，并通过有限元分析，得到期望的研究成果。本文完成的成果和取得的工作如下： (1)通过选取合适的长细比，进行了两组共计6个自密实钢管混凝土短柱的轴压试验，方钢管和圆钢管各3个。通过材性试验确定试验材料的强度，通过方钢管与圆钢管短柱轴压试验，得出实际试验结果。综合文献介绍及试验结果，采用有限元ANSYS软件对试验进行模拟，比较试验结果与软件分析结果，得到适合于本试验自密实方钢管混凝土短柱的承载力计算式。 (2)进行自密实四肢方钢管混凝土格构柱拟静力试验。通过竖向加载控制格构柱轴压比来模拟格构柱实际受力状态，对模型施加往复水平位移来模拟地震作用。通过试验数据绘制滞回曲线，分析结构的抗震性能。将试验结果进行有限元分析，两者对比得到试验结论。 (3)分析柱肢间圆缀管在拟静力试验中的工作情况，通过数据分析推出缀管的抗震性能和工作机理，从试验结果得出缀管在整个模型结构中的作用，提出缀管在实际工程应用中的有价值的建议。本论文来源于湖南省教育厅基金资助重点项目(10C0502)。
[Abstract]:Concrete-filled steel tube (CFST) technology has been applied in the field of modern civil engineering, which has been favored by engineers because of its unique advantages.Many scholars at home and abroad have made many researches in this field, and have achieved fruitful results.However, the seismic behavior of self-compacting concrete-filled steel tubular columns, especially self-compacting concrete-filled steel tubular lattice columns, is not enough, so it is necessary to do more in-depth research.Based on the axial compression test and theoretical analysis of self-compacting concrete filled steel tubular short columns, a formula for calculating the bearing capacity of short columns is established, and the pseudostatic test of self-compacting concrete filled steel tubular columns with four limbs is carried out, and the finite element analysis is used.Get the expected research results.The results and work achieved in this paper are as follows:1) the axial compression tests of six self-compacting concrete filled steel tube short columns were carried out by selecting appropriate aspect ratio, including 3 square steel tubes and 3 circular steel tubes.The strength of the test material is determined by the material property test, and the actual test results are obtained by the axial compression test of the square steel tube and the circular steel tube short column.Based on the literature introduction and test results, the finite element ANSYS software was used to simulate the test. Comparing the test results with the results of the software analysis, a formula for calculating the bearing capacity of the self-compacting concrete filled square steel tubular short columns was obtained.(2) Quasi-static test of self-compacting rectangular CFST latticed column with self-compacting limbs.The axial compression ratio of the lattice column is controlled by vertical loading to simulate the actual stress state of the lattice column and the reciprocating horizontal displacement is applied to the model to simulate the seismic action.The seismic performance of the structure is analyzed by drawing hysteretic curves from experimental data.The test results are analyzed by finite element method, and the experimental results are compared with each other.3) analyzing the working condition of the circular pipe between columns in the pseudo-static test, deducing the aseismic performance and working mechanism of the pipe by data analysis, and drawing the function of the pipe in the whole model structure from the test results.Some valuable suggestions are put forward for practical engineering application.This paper comes from Hunan Provincial Education Department Fund funded key project 10 C 0502.
【学位授予单位】：湖南科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU398.9

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