Experimental study on the compressive performance of new sandwich masonry walls

doi:10.1007/s11709-013-0203-0

Front Struc Civil Eng

2013, Vol. 7

Issue (2) : 154-163 https://doi.org/10.1007/s11709-013-0203-0

RESEARCH ARTICLE

Experimental study on the compressive performance of new sandwich masonry walls

Jianzhuang XIAO(

), Jie PU, Yongzhong HU

Department of Building Engineering, Tongji University, Shanghai 200092, China

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Abstract

Sandwich masonry wall, namely, multi-leaf masonry wall, is widely applied as energy-saving wall since the interlayer between the two outer leaves can act as insulation layer. New types of sandwich walls keep appearing in research and application, and due to their unique connection patterns, experimental studies should be performed to investigate the mechanical behavior, especially the compressive performance. 3 new types of sandwich masonry wall were investigated in this paper, and 3 different technical measures were considered to guarantee the cooperation between the two leaves of the walls. Based on the compression tests of 13 specimens, except for some damage patterns similar with the conventional masonry walls, several new failure patterns are found due to unique connection construction details. Comparisons were made between the tested compression capacity and the theoretical one which was calculated according to the Chinese Code for Design of Masonry Structures. The results indicate that the contributions of the 3 technical measures are different. The modification coefficient (g) was suggested to evaluate the contribution of the technical measures on the compression capacity, and then a formula was proposed to evaluate the design compression capacity of the new sandwich masonry walls.

Keywords sandwich wall insulation wall connection compressive performance compression test

Corresponding Author(s): XIAO Jianzhuang,Email:jzx@tongji.edu.cn

Issue Date: 05 June 2013

Cite this article:

Jianzhuang XIAO,Jie PU,Yongzhong HU. Experimental study on the compressive performance of new sandwich masonry walls[J]. Front Struc Civil Eng, 2013, 7(2): 154-163.

URL:

https://academic.hep.com.cn/fsce/EN/10.1007/s11709-013-0203-0
https://academic.hep.com.cn/fsce/EN/Y2013/V7/I2/154

Fig.1 Steel mesh (mm)

Fig.2 Detail drawings for the tested walls (unit: mm)

Fig.3 Test setup and instrumentation

Tab.1 Major parameters of the specimens

Tab.2 Main results of the compressive tests

Fig.4 Compressive load-vertical strain curves of the specimens. (a) Group A1/A2; (b) Group B1 and B2; (c) Group C; (d) Group D

Fig.5 Detail drawings of the 3 brand-new types of sandwich walls. (a) Group A1/A2; (b) Group B1/B2; (c) Group C

Fig.6 Local failure of Specimen A1-1 and B1-1

Fig.7 The protruding part on top of Specimen A2-2 peeling off

Fig.8 Cracking pattern in the side view surface of Specimen C-2

Tab.3 Test results and calculated results of compression capacity for Group A1 and A2

Tab.4 Test results and calculated results of compression capacity for Group B1 and B2

Tab.5 Test results and calculated results of compression capacity for Group C

Tab.6 The amended design values of the new walls’ bearing capacities

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