在城市进行建筑物沉降观测时基准点的埋设及其稳定性检验OA

Based on the discussion and analysis of the embedment type,embedment mode and the advantages and disadvantages of each type of settlement observation benchmark,this paper comprehensively considers the economic cost of embedment the benchmark,the simplicity of the embedment method,the stability of the benchmark,the convenience of observation and so on.It is concluded that when the settlement observation is carried out in the city,it is an ideal way to bury the benchmark on the wall as the benchmark of settlement observation.At the same time,the stability test formula of the benchmark is analyzed and deduced in detail by using the"finite difference method".The example shows that this method is not only simple and convenient to test the stability of the benchmark,but also can quickly judge whether the benchmark is stable or not.