Please wait a minute...
浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
自由曲面混凝土结构力学特性
崔国勇1, 崔昌禹1,2, 涂桂刚1
1. 哈尔滨工业大学 土木工程学院,黑龙江 哈尔滨150090；2. 哈尔滨工业大学 结构工程灾变与控制教育部重点实验室,黑龙江 哈尔滨150090
Mechanical property of free form surface concrete structure
CUI Guo yong1, CUI Chang yu1,2, TU Gui gang1
1. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; 2. Key Laboratory of StructuresDynamic Behavior and Control of China Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
 全文: PDF(3374 KB)   HTML
摘要：

为了研究自由曲面混凝土结构的力学性能,合理选取混凝土材料本构方程,利用有限元分析软件ABAQUS,建立自由曲面混凝土结构的有限元分析模型,通过与相关试验的对比验证有限元模型的正确性.研究典型自由曲面结构的内力分布特性、荷载 位移曲线与破坏模式、初始缺陷.结果表明：薄膜第一主应力在负高斯曲率区受拉较大,正高斯曲率区受拉较小；薄膜第二主应力在正高斯曲率区受压较大,负高斯曲率区受压较小；上、下表面第一主应力分布模式类似；结构在正、负高斯曲率过渡区的弯曲内力与薄膜内力比值较大,其他位置很小；荷载 位移曲线没有下降段,结构破坏模式为强度破坏；结构对初始缺陷的影响很小.对2个实际工程进行力学分析,验证了所归纳力学特性的正确性.
Abstract:

The finite element (FE) model of the free form surface concrete structure was built using the FE analysis software ABAQUS by rationally selecting the constitute relationship of the concrete in order to study the mechanical properties. The correctness of the FE model was verified compared with the related experiments. Then the distribution characteristic of the internal force of the typical free form surface structure, load displacement curves, failure mode and initial imperfection were investigated. Results show that the first principle membrane stress was tensile stress with high value in negative Gauss curvature region while it was tensile stress with small value in positive Gauss curvature region. The second principle membrane stress was compressive stress with high value in positive Gauss curvature region while it was compressive stress with small value in negative Gauss curvature region. The first principle stress of both the top and bottom surface has similar distribution mode. The ratio between bending and membrane internal force is higher in the transition region between the positive and negative Gauss curvature region than the rest region. The load displacement curve has no descent segment, meaning that the failure mode of the structure was strength failure. The initial imperfection has small influence on the structure. The mechanical analysis of two practical projects was performed to verify the correctness of the concluded mechanical properties.
出版日期: 2015-10-29
:  TU 33  
基金资助:

国家自然科学基金面上项目（50978075）.
通讯作者: 崔昌禹，男，教授，博导. ORCID: 0000 0002 4245 7274.     E-mail: cuichangyu1963@aliyun.com
作者简介: 崔国勇（1986—），男，博士生，从事自由曲面形状优化与力学性能的研究. ORCID: 0000 0002 4147 9949.E-mail：guoyonghit@163.com
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

崔国勇, 崔昌禹, 涂桂刚. 自由曲面混凝土结构力学特性[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008 973X.2015.10.019.

CUI Guo yong, CUI Chang yu, TU Gui gang. Mechanical property of free form surface concrete structure. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008 973X.2015.10.019.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008 973X.2015.10.019    或    http://www.zjujournals.com/eng/CN/Y2015/V49/I10/1960

［1］ 祝恩淳,沈世钊.钢纤维混凝土圆柱壳稳定性能的试验研究［J］.哈尔滨建筑大学学报, 1996, 29(1): 37-42.
ZHU En chun, SHEN Shi zhao. Experiment and study on the stability behaviours of a SFRC cylindrical thin shell ［J］. Journal of Harbin University of Architecture and Engineering, 1996, 29(1): 37-42.
［2］ 唐如意.钢 碳纤维混凝土组合肋壳弹塑性分析［D］.西安：西安建筑科技大学,2009: 59-72.
TANG Ru yi. Elastoplasticity analysis of steel carbon fiber reinforced concrete composite ribbed shell ［D］. Xi’an: Xi’an University of Architecture and Technology, 2009: 59-72.
［3］ 常玉珍.刚 混凝土组合肋壳非线性分析［D］.西安：西安建筑科技大学,2007: 55-91.
CHANG Yu zhen. Nonlinear analysis of steel concrete composite ribbed shell ［D］. Xi’an: Xi’an University of Architecture and Technology, 2007: 55-91.
［4］ 何广乾,魏连,车文珍,等.椭圆抛物面双曲扁壳在均匀外压作用下的非线性弹性稳定性［J］.土木工程学报, 1965,1(1): 1-23.
HE Guang qian, WEI Lian, CHE Wen zhen, et al. The nonlinear elastic stability of elliptic paraboloid double curvature shallow shell under uniform external pressure ［J］. China Civil Engineering Journal, 1965, 1(1): 1-23.
［5］ 崔昌禹,严慧.自由曲面结构形态创构方法:高度调整法的建立与其在工程设计中的应用［J］. 土木工程学报, 2006, 39(12): 1-6.
CUI Chang yu, YAN Hui. A morphosis technique for curved surface structures of arbitrary geometries: height adjusting method and its engineering applications ［J］. China Civil Engineering Journal, 2006, 39(12): 1-6.
［6］ 崔昌禹,姜宝石,崔国勇.结构形态创构方法的工程应用.［J］.建筑钢结构进展,2011, 13(6): 9-18.
CUI Chang yu, JIANG Bao shi, CUI Guo yong. Engineering applications of structural morphogenesis methods ［J］. Progress in Steel Building Structures, 2011, 13(6): 9-18.
［7］ ISOZAKI A. GA Document 77［M］. [S.l.]: Yoshio Futagawa, 2004.
［8］ 崔昌禹,崔国勇,姜宝石.自由曲面混凝土壳体结构静力试验研究［J］.建筑结构学报,2014, 35(11): 68-75.
CUI Chang yu, CUI Guo yong, JIANG Bao shi. Experimental study on static behavior of free surface concrete shell ［J］. Journal of Building Structures, 2014, 35(11): 68-75.
［9］ 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.
LEI Tuo, QIAN Jiang, LIU Cheng qing. Application of damaged plasticity model for concrete ［J］. Structural Engineers, 2008, 24(2): 22-27.
［10］ 江见鲸,陆新征,叶列平. 混凝土结构有限元分析［M］.北京：清华大学出版社,2005: 47-53.
[1] 柯世堂,朱鹏. 基于大涡模拟增设气动措施冷却塔风荷载频域特性[J]. 浙江大学学报(工学版), 2016, 50(11): 2143-2149.
[2] 黄河, 关富玲, 唐渝思, 徐彦. 充气球天线材料性能试验与反射面型面分析[J]. 浙江大学学报(工学版), 2015, 49(4): 769-775.
[3] 杨宏康,高博青. 钢制储液罐的幂次失效模型及地震力折减[J]. 浙江大学学报(工学版), 2014, 48(7): 1202-1208.
[4] 杨宏康, 高博青. 基于Floquet理论的储液罐动力稳定性分析[J]. J4, 2013, 47(2): 378-384.
[5] 关富玲, 钱利锋. 新型陆基充气球天线力学分析与测试[J]. J4, 2012, 46(2): 257-262.
[6] 杨鸿, 杨代恒, 赵阳. 钢筒仓散料静态压力的三维有限元模拟[J]. J4, 2011, 45(8): 1423-1429.
[7] 徐彦, 关富玲, 川口健一. 充气薄膜结构的悬垂和充气展开过程[J]. J4, 2011, 45(1): 75-80.
[8] 鲍侃袁, 沈国辉, 孙炳楠. 双曲冷却塔的脉动风荷载模拟和风致响应[J]. J4, 2010, 44(5): 955-961.
[9] 肖潇, 关富玲, 徐彦. 卷曲折叠充气管展开过程的数值分析及实验研究[J]. J4, 2010, 44(1): 184-189.