(1 武汉理工大学土木工程与建筑学院，武汉 430070； 2 河南省信息咨询设计研究有限公司，郑州 450008； 3 国家住宅与居住环境工程技术研究中心，北京 100044)

［摘要］通过植物纤维增强砌块砌体轴心抗压强度试验，研究了其破坏特征、抗压强度、应力\|应变关系、弹性模量及泊松比。基于试验研究，运用有限元方法，研究其承载力水平、裂缝发展和应力\|应变分布及位移变形情况，特别是其微观层面的裂缝演化机制，从理论上深入分析其破坏机理，阐明了砌体各组成材料间的相互作用及其影响、受力薄弱区，得出了横向拉应力不足和弹性地基作用是其破坏根本原因等许多有益的结论。研究成果为植物纤维增强砌块的推广应用以及相关规程的编制、修改提供依据，为类似的试验研究提供参考。

［关键词］植物纤维增强砌块；轴心抗压；破坏机理；强度；弹性模量；有限元分析

中图分类号：TU37562文献标识码：A文章编号：1002-848X(2011)08-0129-05

Experimental research and finite element analysis-of plant fiber reinforced block masonry under axial compression

Li Baode¹, Wang Xingxiao², Lou Ni³(1 School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China；2 Henan Province Information Consultation Designing Research Co.,Ltd., Zhengzhou 450008, China；3 China National Engineering Research Center for Human Settlements, Beijing 100044, China)

Abstract:Through the axial compressive strength test of the plant fiber reinforced block masonry, the damage characteristics, the compressive strength, the stress-strain relationship, the elastic modulus and poisson’s ratio  were studied. Based on the experimental research, by using finite element method, its capacity level, crack development, stress and strain distribution and the condition of displacement deformation were  studied. Especially the evolution mechanism of the micro cracks, the failure mechanism were theoretically analyzed, the interaction, influence and weak stress area of each component of masonry were illustrated, the fundamental destroy reasons were the defects of lateral stress and elastic foundation and many other useful conclusions were obtained. The results and conclusions provided the foundation for the  application of plant fiber reinforced masonry and the establishment and modification of the relevant regulations, more further ways for the similar experimental research were expanded.

Keywords:plant fiber reinforced block masonry；axial compression；failure mechanism；strength； elastic modulus；finite element analysis

*建设部规范制订项目:建标［2007］125\|73。

作者简介：李保德，教授，Email：baodel_138@163.com。

参考文献

［1］GBJ129—90砌体基本力学性能试验方法标准［S］.北京：中国建筑工业出版社，1990.

［2］JGJ70—90建筑砂浆基本性能试验方法［S］.北京：中国建筑工业出版社，1990.

［3］LI BAODE，SUN JIAN，ZHOU BIN.Experimental determination of modulus of elasticity and poisson’s ratio porous concrete brick masonry［C］//Proceedings of International Conference on Health Monitoring of Structure，Material and Environment，2007，2(10)：885-890.

［4］LI BAODE，ZHOU BIN，SUN JIAN.Experimental study of flexural behavior of concrete common brick masonry［C］//Proceedings of International Conference on Health Monitoring of Structure，Material and Environment，2007，2(10)：907-911.

［5］GB50003—2001砌体结构设计规范［S］.北京：中国建筑工业出版社，2001.

［6］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)：90-96.

［7］陆新征，江见鲸.利用ANSYS SOLID65单元分析复杂应力条件下的混凝土结构［J］.建筑结构，2003，33(6)：22-24.

［8］江见鲸，陆新征.清华大学精品课程：SOLID65 ［DB］.北京：清华大学.

［9］FAHMY E H，GHONEIMT G M.Behavior of concrete block masonry prisms under axial compression［J］.Canada  Journal of Civil Engineering，1995，22(5)：898-915.