钢筋网水泥砂浆加固砖墙的抗侧承载力和刚度计算
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摘要
北京市农村住宅抗震加固试验中采用了钢筋网水泥砂浆加固砖墙方案。为了解决农村住宅加固墙体的非线性计算力学模型,本文根据钢筋网水泥砂浆加固的单片墙的低周反复荷载试验的文献数据,探讨了针对农村住宅砖墙加固后的退化三线性恢复力特性曲线,提出了钢筋网水泥砂浆加固砖墙分别考虑剪切变形和弯剪变形影响下的抗侧力刚度计算方法。同时分别给出了墙体的初裂承载能力和极限承载能力计算公式,并通过对比试验数据和利用上述公式计算出的数据,验证墙体利用这些公式来估算抗侧承载力和抗侧刚度的可行性,为北京市农村加固砖墙住宅的非线性地震反应分析的有限元模拟提供砖墙的力学模型。
The reinforced method of steel mesh mortar is used in the reinforced tests of Beijing rural masonry structures.In order to establish the nonlinear theoretical model of brick wall reinforced with steel mesh mortar,in this paper,the three-linear deteriorating restoring force curve of reinforced brick wall is discussed,the computational formulas of resistance to lateral stiffness under the different states of shear failure or flexure-shear failure are respectively summarized,and then the computational formulas of load at first crack and the ultimate load are respectively provided according to the existing quasi-static testing data of brick wall reinforced with steel mesh mortar.The above computational formulas are verified by comparing calculated results with testing data,and the comparing result demonstrated that these formulas are feasibility.The nonlinear theoretical model will also being used in the nonlinear seismic analysis of Beijing rural reinforced brick structures.
The reinforced method of steel mesh mortar is used in the reinforced tests of Beijing rural masonry structures.In order to establish the nonlinear theoretical model of brick wall reinforced with steel mesh mortar,in this paper,the three-linear deteriorating restoring force curve of reinforced brick wall is discussed,the computational formulas of resistance to lateral stiffness under the different states of shear failure or flexure-shear failure are respectively summarized,and then the computational formulas of load at first crack and the ultimate load are respectively provided according to the existing quasi-static testing data of brick wall reinforced with steel mesh mortar.The above computational formulas are verified by comparing calculated results with testing data,and the comparing result demonstrated that these formulas are feasibility.The nonlinear theoretical model will also being used in the nonlinear seismic analysis of Beijing rural reinforced brick structures.
引文
[1]朱伯龙,吴明舜,等.砖墙用钢筋网水泥砂浆面层加固的抗震能力研究[J].地震工程与工程振动,1984,4(1):70～75Zhu Bo-long,Wu Ming-shun,et al.A Study onAseismic Capacity of Brick Wall Strengthened WithCement Mortar Reinforced with Steel Mesh[J].Earthquake Engineering and Engineering Vibration,1984,4(1):70～75(in Chinese)
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[6]李明,王志浩.钢筋网水泥砂浆加固低强度砂浆砖砌体的试验研究[J].建筑结构,2003,33(10):34～36Li Ming,Wang Zhi-hao.The study on brick wall withlow-strength mortar strengthened with steel-meshedcement mortar[J].Building Structures,2003,33(10):34～36(in Chinese)
[7]许清风,江欢成,朱雷,等.钢筋网水泥砂浆加固旧砖墙的试验研究[J].土木工程学报,2009,42(4):77～83Xu Qing-feng,Jiang Huan-cheng,Zhu Lei,et al.Experimental study of old brick masonry wallstrengthened with steel-meshed cement mortar[J].China Civil Engineering Joural,2009,42(4):77～83(in Chiness)
[8]孙伟民.预应力混凝土砌块砌体抗裂性能的有限元分析[J].四川建筑科学研究,2003,29(4):88～91Sun Wei-min.Finite element analysis to crack-resistance behavior of prestressed concrete blockmasonry[J].Building Science Research of Sichuan,2003,29(4):88～91(in Chinese)
[9]全成华,唐岱新.配筋砌块砌体剪力墙抗剪非线性分析[J].低温建筑技术,2002,90(4):49～50Quan Cheng-hua,Tang Dai-xin.The shear resistancenonlinear analysis on reinforced brick masonry[J].LowTemperature Architecture Technology,2002,90(4):49～50(in Chinese)
[10]秦杰,朱炯.砌体房屋受地表变形的有限元分析[J].工业建筑,2002,32(5):41～44Qin Jie,Zhu Jong.Limited finite analysis of masonrystructure suffering earth deformation[J].IndustrialBuilding,2002,32(5):41～44(in Chinese)
[11]李英民,韩军,刘立平.ANSYS在砌体结构非线性有限元分析中的应用[J].重庆建筑大学学报,2006,28(5):90～96Li Ying-min,Han Jun,Liu Li-ping.Application ofANSYS to Finite Element Analysis for NonlinearMasonry Structures[J].Journal of Chongqing JianzhuUniversity,2006,28(5):90～96(in Chinese)
[12]雷同顺.九江抗震技术学习班材料之一——多层砖房抗震设计与加固[R].北京市房地产科学技术研究所,1985Lei Tong-shun.Aseismic technology learning materials-Reinforcement and aseismic design of mulit-story brickbuilding[R].Beijing Institute of Real Estate Sciencesand Technology,1985(in Chinese)
[2]李毅弘,杨于北,田秀林.水泥砂浆抹面加固砖墙的试验研究报告[R].北京:北京市房地产科学技术研究所,1986,9Li Yi-hong,Yang Yu-bei,Tian Xiu-lin.The StudyReport of Brick Wall strengthened with Cement Mortar[R].Beijing:Beijing Institute of Real Estate Scienceand Technology,1986,9(in Chinese)
[3]楼永林.夹板墙的试验研究与加固设计[J].建筑结构学报,1988,(4):1～11Lou Yong-lin.Research and Design of StrengtheningBrick Walls by Cement or Reinforced Cement MortarCoatings[J].Journal of Building Structures,1988,(4):1～11(in Chinese)
[4]黄忠邦.国外关于钢筋网水泥砂浆抗震加固的研究[J].建筑结构,1991,(5):44～47Huang Zhong-bang.The foreign study on reinforcementwith steel mesh and mortar[J].Building Structures,1991,(5):44～47(in Chinese)
[5]苏三庆,丰定国,王清敏.用钢筋网水泥砂浆抹面加固砖墙的抗震性能试验研究[J].西安建筑科技大学学报,1998,30(3):228～232Su San-qing,Feng Ding-guo,Wang Qing-min.Aninvestigation on aseismic behavior of masonry wallstrengthened with steel meshed cement mortar[J].Journal of Xi’an University of Architecture&Technology,1998,30(3):228～232(in Chinese)
[6]李明,王志浩.钢筋网水泥砂浆加固低强度砂浆砖砌体的试验研究[J].建筑结构,2003,33(10):34～36Li Ming,Wang Zhi-hao.The study on brick wall withlow-strength mortar strengthened with steel-meshedcement mortar[J].Building Structures,2003,33(10):34～36(in Chinese)
[7]许清风,江欢成,朱雷,等.钢筋网水泥砂浆加固旧砖墙的试验研究[J].土木工程学报,2009,42(4):77～83Xu Qing-feng,Jiang Huan-cheng,Zhu Lei,et al.Experimental study of old brick masonry wallstrengthened with steel-meshed cement mortar[J].China Civil Engineering Joural,2009,42(4):77～83(in Chiness)
[8]孙伟民.预应力混凝土砌块砌体抗裂性能的有限元分析[J].四川建筑科学研究,2003,29(4):88～91Sun Wei-min.Finite element analysis to crack-resistance behavior of prestressed concrete blockmasonry[J].Building Science Research of Sichuan,2003,29(4):88～91(in Chinese)
[9]全成华,唐岱新.配筋砌块砌体剪力墙抗剪非线性分析[J].低温建筑技术,2002,90(4):49～50Quan Cheng-hua,Tang Dai-xin.The shear resistancenonlinear analysis on reinforced brick masonry[J].LowTemperature Architecture Technology,2002,90(4):49～50(in Chinese)
[10]秦杰,朱炯.砌体房屋受地表变形的有限元分析[J].工业建筑,2002,32(5):41～44Qin Jie,Zhu Jong.Limited finite analysis of masonrystructure suffering earth deformation[J].IndustrialBuilding,2002,32(5):41～44(in Chinese)
[11]李英民,韩军,刘立平.ANSYS在砌体结构非线性有限元分析中的应用[J].重庆建筑大学学报,2006,28(5):90～96Li Ying-min,Han Jun,Liu Li-ping.Application ofANSYS to Finite Element Analysis for NonlinearMasonry Structures[J].Journal of Chongqing JianzhuUniversity,2006,28(5):90～96(in Chinese)
[12]雷同顺.九江抗震技术学习班材料之一——多层砖房抗震设计与加固[R].北京市房地产科学技术研究所,1985Lei Tong-shun.Aseismic technology learning materials-Reinforcement and aseismic design of mulit-story brickbuilding[R].Beijing Institute of Real Estate Sciencesand Technology,1985(in Chinese)
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