烧结多孔砖墙体温度裂缝分析和预防措施  

Cracks in Fired Perforated Brick Walls Caused by Temperature Change and Some Counter-measures

作　　者：陆杰[1] 

机构地区：[1]扬子石化-巴斯夫有限责任公司,江苏南京210048

出　　处：《金陵科技学院学报》2013年第4期40-46,共7页Journal of Jinling Institute of Technology

摘　　要：烧结多孔砖作为烧结普通砖的替代材料,因其具有性能稳定、耐久性好、容重轻、施工方便、施工效率高及保温节能等特点,并可节约土地资源,得到广泛推选使用。采用烧结多孔砖砌筑的墙体裂缝的产生与烧结普通砖有许多相似。因砌体结构房屋钢筋混凝土屋盖和烧结多孔砖墙体的线膨胀系数和刚度不同,当温度变化时,二者就会产生相对位移和内力,从而引起墙体裂缝。裂缝的产生与温度、水平阻力系数及墙体截面尺寸有关。通过对温度裂缝产生原因进行定性、定量分析,提出从设计构造、规范施工及砌体强度等方面来控制温度裂缝。Fired perforated brick is used as a substitute for bearing wall instead of fired common bricks.It has good performance in stability,durability,low volume-weight,and thermal insu-lation,and it is convenient,highly efficient and energy-saving for construction.It also saves land resources,which is widely chosen and used.The cracks on fired perforated brick walls have a lot in common with those on fired common brick walls.Because of the differences of lin-ear expansion coefficient and stiffness between reinforced concrete roof and fired perforated brick walls,when the temperature changes,both of them bring the relative displacement and internal force, thus the crack appears on the wall.Temperature, horizontal resistance coefficient and the section size of the wall body are relevant to the crack.Based on quantitative and qualitative analysis of crack caused by temperature change,the paper provides several counter-measures against crack with regard to design conformation, standardizing construction,and the strength of masonry.

关 键 词：砌体结构 烧结多孔砖 墙体 温度裂缝 预防措施 

分 类 号：TU398.5[建筑科学—结构工程]