摘要
对混凝土底板上长墙,在考虑墙体和底板分别降温的条件下,推导出墙体拉应力、墙板间剪应力、裂缝间距的简化计算公式;分析了底板与墙体刚度比对墙体应力及其分布的影响。研究结果表明,随着刚度比的增大,墙体拉应力急剧增大,且沿长度分布趋于平均,裂缝间距趋于缩小。
Aiming at long-wall on concrete bottom slab, under the temperature reduction conditions toward wall or bottom slab, deduced the reduction formula of wallboard pulling stress, shearing strength and fracture interval. Analyzed how the stiffness ratio of bottom slab and wallboard affect wallboard stress distribution. The result of study shows that, as the stiffness ratio increases, wall pulling stress increases rapidly, its distribution tends to average along the length, fracture interval tends to decrease.
出处
《工程质量》
2009年第3期60-63,共4页
Construction Quality
关键词
底板
长墙
收缩应力
简化计算
bottom slab
long-wall
shrinkage stress
calculation of reduction
