NON-LINEAR ANALYSIS OF PRESTRESSED STEEL-CONCRETE COMPOSITE FRAMES
-
摘要: 基于2榀大尺寸的预应力型钢混凝土框架的试验研究,利用通用有限元程序对预应力型钢框架试验进行非线性有限元分析,并将数值模拟结果与试验结果进行对比。结果表明,非线性分析可以较为准确地模拟试验的全过程。最后,对不同预应力度及不同相对受压区高度情况下预应力型钢框架极限状态时的内力重分布做了研究。试验结果与有限元结果均表明,在受压区高度不变的情况下,随着预应力度的增大,支座弯矩的调幅值增大。在预应力度不变时支座弯矩的调幅值随着相对受压区高度的增大而减小,有效预应力的增大会降低支座弯矩的调幅值。Abstract: Based on test of two large-scaled PSRC frames, nonlinear analysis is carried out for two tested prestressed steel-concrete frames using finite element ABAQUS.Numerical simulation results and test results are compared.Results show that the nonlinear analysis can simulate exactly the whole process of the test for this kind of structure.Both test results and numerical simulation results indicate that the amplitude modulation value of support moment increases as the degree of prestressing of the PSCF increases when depth of compression zone remains invariant;when the degree of the prestress remains constant, it decreases when depth of compression zone increases.The amplitude modulation value of support moment decreases when effective prestress increases.
-
Key words:
- prestress /
- SRC /
- FEM method /
- nonlinear analysis /
- degree of prestressing /
- internal force redistribution
-
[2] 张蜀泸.基于 ABAQUS 的部分粘结预应力混凝土梁有限元分析[J].低温建筑技术,2009(5):40-42. 周晓娜,徐杰,连峰,等.预应力型钢混凝土梁受弯性能非线性分析[J].山东建筑大学学报,2009,24(4):316-320. [3] GB 500102002混凝土结构设计规范[S]. [4] 石亦平,周玉蓉. ABAQUS 有限元分析实例详解[J].北京:机械工业出版社,2008. [5] 王钧,邬丹,郑文忠.预应力型钢混凝土简支梁正截面受力性能试验[J].哈尔滨工业大学学报,2009,41(6):22-27. [6] Hamid Saadatmanesh, Pedro Albrecht, Bilal M Ayyub. Analytical?Study of Prestressed Composite Beams[J]. Journal of Structural?Engineering,1989,115(9):2364-2381. [7] 张劲,王庆扬,胡守营,等. ABAQUS 混凝土损伤塑性模型参数验证[J].建筑结构,2008,38(8):127-130. [8] 雷拓,钱江,刘成清.混凝土损伤塑性模型应用研究[J].结构工程师,2008,24(2):22-27. [9] 陈明政.预应力混凝土框架塑性内力重分布与弯矩调幅的研究[D].重庆:重庆大学,2006. [10] 简斌,王正霖,白绍良.预应力混凝土连续梁弯矩调幅建议[J].重庆建筑大学学报,1999,21(2):12-18. [11] 傅传国,娄宇.预应力型钢混凝土结构试验研究及工程应用[M].北京:科学出版社,2007.
点击查看大图
计量
- 文章访问数: 121
- HTML全文浏览量: 3
- PDF下载量: 62
- 被引次数: 0