摘要
介绍了向家坝水电站大型沉井群中的6号沉井下沉阻力的监测技术。在沉井下沉的过程中,采用钢筋应力计监测沉井的侧摩阻力,采用土压力计监测沉井刃脚的土压力,分别得到了每节沉井的侧摩阻力、沉井与土层的摩擦系数以及沉井的刃脚的土压力。通过这些监测数据,既控制了沉井的安全平稳下沉,也为类似的大型沉井的监测和施工提供了有益参考。
The monitoring technique of sinking resistance of the sixth caisson in the large caisson group of Xiangjiaba Dam was introduced in this paper. During sinking of the caisson, the reinforcing steel bar stress gages and earth pressure cells were used to test the side resistance and tip resistance of the caisson. The side re- sistance of each segment, the friction coefficients between soils and the caisson, the earth pressures on the tip of the caisson were obtained. These monitoring data guided safe sinking of the caisson and ensured smooth completion of the project. They will be valuable for the monitoring and construction of the large caisson in the similar cases.
出处
《华中科技大学学报（城市科学版）》
CAS
2009年第2期43-46,51,共5页
Journal of Huazhong University of Science and Technology
关键词
沉井
侧摩阻力
土压力
测试
caisson
side friction
earth pressure
test
