砖混结构房屋,对基础的不均匀沉降,表现非常敏感。我们通过多年的考查,发现承重墙体出现斜裂缝,很少是因基础断面不够和构造措施不当造成的,更多的是因地基没有处理好所致。现在有相当一部分设计人员,为了保险,除了过量地加大基础断面外,还一味地增加圈梁断面和配筋,这种趋势有增无减。这不仅造成大量人力物力的浪费,而且也不能从根本上杜绝基础事故的发生。我们知道, The brick-concrete structure houses are very sensitive to the uneven settlement of the foundation. After many years of investigation, we found that the oblique cracks in the bearing wall were rarely caused by inadequate foundation sections and inappropriate structural measures, and more because the foundation was not properly treated. At present, a considerable number of designers, in addition to excessively increasing the number of foundation sections for insurance purposes, have also blindly increased the section and reinforcement of ring beams, and this trend has only increased. This not only causes a lot of manpower and material waste, but also does not fundamentally eliminate the occurrence of basic accidents. we know,