浅谈砌体结构的质量问题（Discussion on quality of masonry structure）.doc

浅谈砌体结构的质量问题（Discussion on quality of masonry structure） Masonry structure is made of block and mortar, and the wall and column are the main structure of the building. As everyone knows, the masonry structure building in accordance with local conditions, local materials principle. Compared with the reinforced concrete structure, the cement and the reinforcing steel can be saved, and the cost is reduced. Therefore, masonry structure has played an irreplaceable role in the development and construction of new China in the past decades. While the masonry structure is widely used, many quality accidents have also been found. There are four kinds of common quality problems in masonry engineering: First, masonry strength is insufficient 1 、 the design cross section is too small and the bearing capacity is not enough; 2, water, electricity, warm, Wei device, leaving holes, leaving the slot, weakened wall section too much; 3, the quality of material failure, such as masonry bricks and mortar strength level does not meet the design requirements, the use of substandard cement and admixture; 4, poor construction quality, serious shortage of mortar fullness, construction of brick is not flooded, causing insufficient strength of gray joint. Two, masonry dislocation, deformation 1, masonry wall thickness ratio is too large, resulting in the use of stage instability deformation; 2, construction quality problems, such as vertical deflection of the wall, after the use of force and increase deformation, or even staggered; 3, the construction sequence is improper, such as vertical and horizontal wall and bite Cha masonry, resulting in new masonry wall out of plane deformation instability; 4, improper construction process such as sand lime brick masonry, masonry lead to instability. Three, partial damage or collapse 1, due to the impact of wall construction or in the use of off angle, piercing and even partial collapse; 2, the wall was corroded by caustic soda in the process of use, whic