灌孔砌块砌体抗剪强度梁式计算模型
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摘要
N式砌块是一种可实现孔、肋完全对齐的新型混凝土小型砌块。该文通过四组(24个)不同灌孔率N式砌块砌体的抗剪性能试验研究,对其受力性能和破坏机理进行了分析,建立了灌孔砌块以芯柱混凝土受力的梁式抗剪模型,并提出了相应计算公式。分析表明,以该文的抗剪强度计算公式来计算灌孔砌块的抗剪强度无论是从计算精度还是从公式的物理意义上都优于现有以灌孔砌体的抗压强度来表征灌孔砌体抗剪强度的规范计算公式。基于梁式抗剪模型的计算公式可以很好地应用于各种块形的灌孔砌体的抗剪强度计算。
Four groups (24 specimens) of N-type block masonry with different grouted rates have been investigated on the performance of shear resistance. According to the shear-test phenomena and failure shape of specimens, the paper has established a beam-type shear resistance model with the consideration of the loaded core column concrete, and also provided related calculation formula. The shear strength of grouted block masonry was computed by the shear strength calculation formula, which was better than the formula in present code that expressed grouted masonry shear strength with the compression strength of grouted masonry. The shear strength calculation formula based on the beam-type shear resistance model can be applicable for grouted masonry with different block types.
Four groups (24 specimens) of N-type block masonry with different grouted rates have been investigated on the performance of shear resistance. According to the shear-test phenomena and failure shape of specimens, the paper has established a beam-type shear resistance model with the consideration of the loaded core column concrete, and also provided related calculation formula. The shear strength of grouted block masonry was computed by the shear strength calculation formula, which was better than the formula in present code that expressed grouted masonry shear strength with the compression strength of grouted masonry. The shear strength calculation formula based on the beam-type shear resistance model can be applicable for grouted masonry with different block types.
引文
[1]施楚贤.砌体结构理论与设计[M].第二版.北京:中国建筑工业出版社,2003.Shi Chuxian.The theory and design of masonry structure[M].2nd ed.Beijing:The Chinese Building Industrial Publishing House,2003.(in Chinese)
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[3]蓝贵禄.砌体房屋的抗震强度[J].地震工程与工程振动,1994,14(4):72―82.Lan Guilu.The Seismic resistance of masonry buildings[J].Earthquake Engineering and Engineering Vibration,1994,14(4):72―82.(in Chinese)
[4]GB50003-2001,砌体结构设计规范[S].北京:中国建筑工业出版社,2002.GB50003-2001,Code for Design of Masonry Structures[S].Beijing:The Chinese Building Industrial Publishing House,2002.(in Chinese)
[5]杨伟军.混凝土砌体配筋剪力墙研究及砌体结构可靠性分析[D].长沙:湖南大学,2000.Yang Weijun.Research on concrete masonry and reinforced masonry shear wall and reliability analysis of masonry structures[D].Changsha:Hunan University,2000.(in Chinese)
[6]宋力.混凝土砌块砌体基本力学性能试验研究与非线性有限元分析[D].长沙:湖南大学,2000.Song Li.Experimental research on concrete block masonry basic mechanical properties and nonlinear finite element analysis[D].Changsha:Hunan University,2000.(in Chinese)
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[9]过镇海.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.Guo Zhenhai.Reinforced concrete theory and analysis[M].Beijing:Tsinghua University Press,2003.(in Chinese)
[10]过镇海.混凝土的强度和变形——试验基础和本构关系[M].北京:清华大学出版社,1997.Guo Zhenhai.Strength and deformation of concrete-experimental basis and constitutive relations[M].Beijing:Tsinghua University Press,1997.(in Chinese)
[11]Kupfer H,Gerstle K H.Behavior of concrete under biaxial stresses[J].ASCE,1973,99(4):12―18.
[12]CEB-FIP Model Code1990,Bulletin D’Information No.213/214[S].Lausanne,Switzerland:Comite Euro-International du Beton,1993.
[13]江波.高强砌块填芯砌体基本力学性能试验研究[D].哈尔滨:哈尔滨建筑大学,2000.Jiang Bo.Experimental research on grouted high-strength masonry basic mechanical properties[D].Harbin:Harbin University of Architecture,2000.(in Chinese)
[2]骆万康,李锡军.砖砌体剪压复合受力动、静力特性与抗剪强度公式[J].重庆建筑大学学报,2000,22(4):13―19.Luo Wankang,Li Xijun.A study on the response of brick masonry structure under dynamic and static shear-compression loading and suggested shearing equation[J].Journal of Chongqing Jianzhu University,2000,22(4):13―19.(in Chinese)
[3]蓝贵禄.砌体房屋的抗震强度[J].地震工程与工程振动,1994,14(4):72―82.Lan Guilu.The Seismic resistance of masonry buildings[J].Earthquake Engineering and Engineering Vibration,1994,14(4):72―82.(in Chinese)
[4]GB50003-2001,砌体结构设计规范[S].北京:中国建筑工业出版社,2002.GB50003-2001,Code for Design of Masonry Structures[S].Beijing:The Chinese Building Industrial Publishing House,2002.(in Chinese)
[5]杨伟军.混凝土砌体配筋剪力墙研究及砌体结构可靠性分析[D].长沙:湖南大学,2000.Yang Weijun.Research on concrete masonry and reinforced masonry shear wall and reliability analysis of masonry structures[D].Changsha:Hunan University,2000.(in Chinese)
[6]宋力.混凝土砌块砌体基本力学性能试验研究与非线性有限元分析[D].长沙:湖南大学,2000.Song Li.Experimental research on concrete block masonry basic mechanical properties and nonlinear finite element analysis[D].Changsha:Hunan University,2000.(in Chinese)
[7]王传志,腾志明.钢筋混凝土结构理论[M].北京:中国建筑工业出版社,1985.Wang Chuanzhi,Teng Zhiming.Reinforced concrete structure theory[M].Beijing:The Chinese Building Industrial Publishing House,1985.(in Chinese)
[8]张琦,过镇海.砼抗剪强度和剪切变形的研究[J].建筑结构学报,1992,13(5):17―24.Zhang Qi,Guo Zhenhai.Research on concrete shear strength and shear deformation[J].Journal of Building Structures,1992,13(5):17―24.(in Chinese)
[9]过镇海.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.Guo Zhenhai.Reinforced concrete theory and analysis[M].Beijing:Tsinghua University Press,2003.(in Chinese)
[10]过镇海.混凝土的强度和变形——试验基础和本构关系[M].北京:清华大学出版社,1997.Guo Zhenhai.Strength and deformation of concrete-experimental basis and constitutive relations[M].Beijing:Tsinghua University Press,1997.(in Chinese)
[11]Kupfer H,Gerstle K H.Behavior of concrete under biaxial stresses[J].ASCE,1973,99(4):12―18.
[12]CEB-FIP Model Code1990,Bulletin D’Information No.213/214[S].Lausanne,Switzerland:Comite Euro-International du Beton,1993.
[13]江波.高强砌块填芯砌体基本力学性能试验研究[D].哈尔滨:哈尔滨建筑大学,2000.Jiang Bo.Experimental research on grouted high-strength masonry basic mechanical properties[D].Harbin:Harbin University of Architecture,2000.(in Chinese)
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