Abstract
The three-dimensional numerical model of the foundation pit engineering is established, and the fluid-structure coupling method is used to calculate the settlement of the pile foundation of the adjacent railway bridge caused by the excavation and dewatering of the foundation pit. The results show that the settlement range of the soil around the foundation pit reaches 140m, and the pile foundation of the railway bridge is within the influence range, but the maximum settlement value does not exceed the limit value specified in the design. The method used in this paper provides effective guidance for the construction optimization of the same type of projects and reduces the project cost.
Highlights
There are two adjacent foundation pits in the dumper room of a project, with the depth of 26m and 19m respectively, and a new railway bridge is near the foundation pit
Due to the excavation and dewatering during the construction of foundation pit, the surrounding soil will produce a certain settlement, which may cause the settlement of the pile foundation of the new railway bridge
Through the establishment of a three-dimensional numerical model of foundation pit engineering, the fluid-structure coupling method is used to calculate the settlement of the pile foundation of the nearby railway bridge caused by excavation and dewatering
Summary
There are two adjacent foundation pits in the dumper room of a project, with the depth of 26m and 19m respectively, and a new railway bridge is near the foundation pit. Due to the excavation and dewatering during the construction of foundation pit, the surrounding soil will produce a certain settlement, which may cause the settlement of the pile foundation of the new railway bridge. Through the establishment of a three-dimensional numerical model of foundation pit engineering, the fluid-structure coupling method is used to calculate the settlement of the pile foundation of the nearby railway bridge caused by excavation and dewatering. The relationship between the deformation of the support structure, settlement of ground outside pit and anti-uplift safety factor of the foundation pit is studied by Mana through the finite element numerical analysis, and the relevant empirical formula is established [1]. Numerical simulation method with the characteristics of low cost and high efficiency is an effective means to analyse the influence of the excavation and dewatering of the foundation pit
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
