基于三层板模型的气膜混凝土薄壳结构设计
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摘要
基于三层板模型和拉压杆模型,介绍了钢筋混凝土薄壳结构设计的一种方法.与我国目前采用的设计方法主要考虑壳单元面内轴力和弯矩两种内力不同,本文设计方法考虑了壳单元受面内轴力、面内剪力、面外剪力、弯矩和扭矩等共八个内力的共同作用.进行了一个气膜喷射混凝土薄壳结构的设计,并与由传统方法得到的设计结果进行了对比分析,说明了本文方法的设计过程和可靠性.研究表明,对于剪力和扭矩相对较小的情况,可以按传统方法进行设计;而对于剪力和扭矩的影响不可忽略的情形,本文方法的设计结果相对合理.
This paper proposed a design methodology of concrete thin shell based on three-layer plate model and strut-and-tie model. Traditional design method mostly considered the axial force and bending moment only, while this method considers all internal forces including axial force, in-plane shear, out-of-plane shear, bending moment and torsion. Moreover, this paper utilized a construction case to introduce the procedure of the design method and compared it with the traditional method to prove its reliability. The results show that when the shear and torsion cannot be ignored, the new methodology would be more accurate and convincing.
This paper proposed a design methodology of concrete thin shell based on three-layer plate model and strut-and-tie model. Traditional design method mostly considered the axial force and bending moment only, while this method considers all internal forces including axial force, in-plane shear, out-of-plane shear, bending moment and torsion. Moreover, this paper utilized a construction case to introduce the procedure of the design method and compared it with the traditional method to prove its reliability. The results show that when the shear and torsion cannot be ignored, the new methodology would be more accurate and convincing.
引文
[1] 祝恩淳,沈世钊.薄壳结构几何非线性全过程分析[J].哈尔滨建筑大学学报, 1995,28(5): 19-25.ZHU En-chun, SHEN Shi-zhao. Generally nonlinear analysis on thin shell concrete structures [J]. Journal of Harbin University of Civil Engineering & Architecture, 1995,28(5): 19-25.
[2] 高尔新,成志辉,徐锋.混凝土薄壳结构有限元数值模拟[J].工业建筑,2005,35(S1): 256-258.GAO Er-xin, CHENG Zhi-hui, XU Feng, Finite element method numerical simulation of thin shell concrete structure [J]. Industrial Construction, 2005,35(S1): 256-258.
[3] GB 50010-2010.混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.
[4] JGJ 22-2012.钢筋混凝土薄壳结构设计规程[S].北京:中国建筑工业出版社,2010.
[5] 马彦飞.谈钢筋混凝土壳板单元的配筋设计[J].山西建筑,2012,38(34): 61-62.MA Yan-fei. Research on reinforcement design of shell element in reinforced concrete [J]. Shanxi Architecture, 2012,38(34): 61-62.
[6] Comite Euro-International Du Beton. CEB-FIP MODEL CODE 1990[S]. London: Thomas Telford Services Ltd, 1993: 198-214.
[7] 方从启,刘朝山.混凝土结构设计的拉-压杆模型方法—I:模型建立[J].混凝土,2009,(9): 5-9.FANG Cong-qi, LIU Chao-shan. Strut and tie model method for design of reinforced structures: Part I model development [J]. Concrete, 2009,(9): 5-9.
[8] 周履.压杆-拉杆模型在混凝土结构设计中的应用[J].世界桥梁,2002,(2): 1-7.ZHOU Lv. Application of strut and tie model in concrete design[J]. World Bridge, 2002,(2): 1-7.
[9] GB 50009-2012.建筑结构荷载规范[S].北京:中国建筑工业出版社,2012.
[10] 吴族平,张利,龚景海,等.某椭球形气膜钢筋混凝土壳体结构力学性能分析[C]//第十六届全国现代结构工程学术研讨会,2016.WU Zu-ping, ZHANG Li, GONG Jing-hai, et al. Mechanical analysis on a spherical air-inflated reinforced concrete shell[C]//16th National Symposium on Modern Structural Engineering, 2016.
[2] 高尔新,成志辉,徐锋.混凝土薄壳结构有限元数值模拟[J].工业建筑,2005,35(S1): 256-258.GAO Er-xin, CHENG Zhi-hui, XU Feng, Finite element method numerical simulation of thin shell concrete structure [J]. Industrial Construction, 2005,35(S1): 256-258.
[3] GB 50010-2010.混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.
[4] JGJ 22-2012.钢筋混凝土薄壳结构设计规程[S].北京:中国建筑工业出版社,2010.
[5] 马彦飞.谈钢筋混凝土壳板单元的配筋设计[J].山西建筑,2012,38(34): 61-62.MA Yan-fei. Research on reinforcement design of shell element in reinforced concrete [J]. Shanxi Architecture, 2012,38(34): 61-62.
[6] Comite Euro-International Du Beton. CEB-FIP MODEL CODE 1990[S]. London: Thomas Telford Services Ltd, 1993: 198-214.
[7] 方从启,刘朝山.混凝土结构设计的拉-压杆模型方法—I:模型建立[J].混凝土,2009,(9): 5-9.FANG Cong-qi, LIU Chao-shan. Strut and tie model method for design of reinforced structures: Part I model development [J]. Concrete, 2009,(9): 5-9.
[8] 周履.压杆-拉杆模型在混凝土结构设计中的应用[J].世界桥梁,2002,(2): 1-7.ZHOU Lv. Application of strut and tie model in concrete design[J]. World Bridge, 2002,(2): 1-7.
[9] GB 50009-2012.建筑结构荷载规范[S].北京:中国建筑工业出版社,2012.
[10] 吴族平,张利,龚景海,等.某椭球形气膜钢筋混凝土壳体结构力学性能分析[C]//第十六届全国现代结构工程学术研讨会,2016.WU Zu-ping, ZHANG Li, GONG Jing-hai, et al. Mechanical analysis on a spherical air-inflated reinforced concrete shell[C]//16th National Symposium on Modern Structural Engineering, 2016.