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根据混凝土裂缝产生的原因,大致可分为12类。1 不均匀沉陷裂缝。由于地基软基的不均匀沉陷而引起构筑物产生～45°和～90°的裂缝,裂缝的宽度与荷载的大小有关,并且与不均匀沉陷值成正比,其原因有:①地基夯实质量没有达到要求,甚至地基未经夯实;②软基没有进行必要的加固处理;③同一构筑物的底部,却有2种以上承载能力差别很大的地基;④构筑物附属水管渗漏或地表排水不良,表水下渗,致使基础产生不均匀沉陷。
According to the causes of concrete cracks can be broadly divided into 12 categories. 1 uneven subsidence cracks. As a result of the uneven subsidence of foundation, the structures produce cracks of ~ 45 ° and ~ 90 °. The width of the cracks is related to the size of the load and is proportional to the value of the uneven subsidence. The reasons are as follows: ① The compaction quality of foundation is not reached Requirements and even the foundation is not compacted; ② the soft base is not necessary for reinforcement; ③ the bottom of the same structure, there are two or more different bearing capacity of very different foundation; ④ building subsidiary pipe leakage or surface drainage is poor, surface water Infiltration, resulting in uneven foundation subsidence.