杨建江  吴文涛　（天津大学建工学院　300072）

[提要]  对国内外的试验资料进行了研究分析，对有代表性的砌体抗压强度计算模式不定性进行了比较。结果显示，我国砌体设计规范的砌体抗压强度计算模式对于抗压强度较高的烧结普通砖、烧结多孔砖砌体安全储备偏大。并对规范设计计算公式、计算模式不定性的考虑以及公式局部限制条件等提出了补充建议。供我国砌体结构设计与施工规范的修订时参考。
[关键词]  砌体抗压强度  规范  试验资料  计算模式不定性

Through analysis on the data collected from published experimental results, the uncertainty in several models proposed in the literature for prediction of masonry compressive strength are studied. Furthermore, where possible, models suggested in representative design codes are also examined in the same manner. It is found that the Chinese code for design of masonry structures ( GB50003-2001) of proposed models is most suitable and foreign existing models give highly uncertain values of the compressive strength, whereas foreign code values are uncertain as well as perhaps over-conservative. Incorporation of a model uncertainty factor is also achieved.
Keywords:  masonry; compressive strength; design codes; experimental data; model uncertainty

     参  考  文  献
1．砌体结构设计规范 (GB50003-2001 ) . 2002 .
2．Eurocode 6:  Design of Masonry Structures( ENV1996 . 1 ) . 1995 .
3．ÖNORM B3350: Masonry-calculation, measurement, completion.1994 .
4．BS5628:  Code of practice for use of masonry-partl. Structural Use of Unreinforced Masonry. 1992.
5．Hendry A W, Malek M H. Characteristic compressive strength of brickwork walls from collected test results. Masonry International. 1986,(7).                          
6．Malek M H. Compressive strength of brickwork masonry with special reference to concentrated load. PhD Thesis. University Edin burgh,1987
7．Mann W. Statistical evaluation of tests on masonry by potential functions. Sixth International Brick Masonry Conference, 1982.
8．Pande G N,Kralj B, Middleton J.Analysis of the compressive strength of masonry given by the equation  f_k= (f_b )^a ( f_m ) ^β. Structural Engineer, 1994, 72(1).
9．Dymiotis C, Gutlederer B M. Allowing for uncertainties in the modeling of masonry compressive strength. Construction and Building Materials,2002,(16).
10．Baur J, Noland J L, Chinn J. Compression tests of clay-unit stack bond prisms. North American Masonry Conference, 1978,( 25).
11．Naom N F Prediction of masonry ultimate compressive strength MPhil Thesis.  University of Essex, 1992.
12．Sinha B P,de Vekey R C. A study of the compressive strength in three orthogonal directions of brickwork prisms built with perforated bricks. Masonry International, 1990,3(3).
13．吕裼昭．粘土空心砖砌体受压、受剪强度和变形特征的试验研究见：砌体结构研究论文集，长沙：湖南大学出版社，1989．
14．秦士洪等．烧结煤矸页岩多孔砖砌体强度试验研究见：现代砌体结构，中国建筑工业出版社，2000
15．祝英杰．高强混凝土砌块砌体基本力学性能昀试验研究及其动力分析硕士学位论文，东北大学，2001.
16．侯汝欣．模数多孔砖砌体力学性能综合分析，四川建筑科学研究院，1996.