The Time History of Axial Force of Soil Nail in Deep Excavation Course
This paper presents a theoretically study on the time-dependent characteristic of soil-nail axial force in the whole construction process of foundation pit. Firstly, the time-varying performance of axial forces of soil nails is analyzed according to the measured lateral deformation curves of pile-anchor and soil-nail composite supporting deep foundation pit. Then combined with a soil rheological model, a time-dependent formula of soil nail axial force is put forward, and the simulated results are compared to the back-analyzed ones. Finally, a formula to predict the time-dependent axial force of soil nail in the whole construction process of foundation pit is established and an example is investigated to validate the method.
Chaohe Chen, Yong Huang and Guangfan Li
F. Li et al., "The Time History of Axial Force of Soil Nail in Deep Excavation Course", Advanced Materials Research, Vols. 243-249, pp. 2259-2265, 2011