建筑基坑监测的常见问题及对策

以某建筑基坑为例,探讨了不同观测时间对沉降的影响、不同位置观测点的沉降变化规律和地下水位升降对沉降的影响。为避免温度对观测成果的影响,沉降观测时间选择在上午进行,不宜选择在中午;在观测顺序上,先进行建筑物阳面测点观测,后进行阴面测点观测,尽量减少温度对沉降的影响;地下水回升引起地基回弹,沉降变化速率为负值,累计沉降量减少。

Common Problems and Countermeasures of Monitoring on Building Foundation Pit

This paper takes a building foundation pit as an example,and discusses the effect of Monitoring time on subsidence,variation rate of subsidence on different Monitoring points,and the effect on subsidence because of change of groundwater level.We can choose the Monitoring time in the morning not at the noon to avoid the effect of temperature on the observation results.We should follow the Monitoring sequence,which starts from the sunny facets of the building to decrease the effect of temperature on the Monit...