11 th INTERNA TIONAL BRICKlBLOCK MASONR Y CONFERENCE TONGJI UNIVERSITY, SHANGHAI, CHINA, 14 - 16 OCTOBER 1997 TEMPERA TURE STRESS CALCULATION OF BRICK MASONRY BUILDINGS Yangming Xiao l.ABSTRACT Based on tests, this paper proposes the approximate method of calculating temperature stress and deformation of brick masonry structures according to the principie of con- straint and deformation compatibility among brick masonry members . The results of calculation present a satisfactory agreement with tests and show that formulas are sim pie and useful. Design engineers can use the formu las for reference. 2. INTRODUCTION Brick masonry buildings are space structure composed of concrete top pia te , floor and block. Because the physical properties of matereials are different, slabs and walls of each floor bear different temperature difference. Each membere of buildings will pro- ducedifferent deformation when outside temperature changes and material shrinks. In the meantime, the structural interior will produce temperature shrinkang stress be- cause of the constraint among members . When the stress is beyond ultimate tensile strength or shearing strength, varioÍls types of cracks will be appeared in the struc- ture . Since there are so many factors that affect temperature stress of brick masonry structure, such as tPmperature difference, material properties, the pattern and size of Keywords: Brick masonry structure;Temperature stress; Wall cracks Dep. of Building Engineering, Hefei U niversityof Technology, Hefei 230009, China. 742
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11 th INTERNA TIONAL BRICKlBLOCK MASONR Y CONFERENCE
TONGJI UNIVERSITY, SHANGHAI, CHINA, 14 - 16 OCTOBER 1997
TEMPERA TURE STRESS CALCULATION
OF BRICK MASONRY BUILDINGS
Yangming Xiao
l.ABSTRACT
Based on tests, this paper proposes the approximate method of calculating temperature
stress and deformation of brick masonry structures according to the principie of con
straint and deformation compatibility among brick masonry members. The results of
calculation present a satisfactory agreement with tests and show that formulas are
sim pie and useful. Design engineers can use the formu las for reference.
2. INTRODUCTION
Brick masonry buildings are space structure composed of concrete top pia te , floor and
block. Because the physical properties of matereials are different, slabs and walls of
each floor bear different temperature difference. Each membere of buildings will pro
ducedifferent deformation when outside temperature changes and material shrinks. In
the meantime, the structural interior will produce temperature shrinkang stress be
cause of the constraint among members. When the stress is beyond ultimate tensile
strength or shearing strength, varioÍls types of cracks will be appeared in the struc
ture. Since there are so many factors that affect temperature stress of brick masonry
structure, such as tPmperature difference, material properties, the pattern and size of