Abstract
Recent years have seen a great concern on the construction safety of the deep foundation pit with complicated geological conditions due to an increasing number of accidents. However, there are not, currently, sufficient research studies on the safety analysis of the deep foundation pit in water-rich soft soils. As a result, dynamic predictions of the safety risk during the whole construction process are inadequate due to the lack of research studies. Therefore, this paper presents an approach for the construction safety of the deep foundation pit in water-rich soft soils, which combines the building information modeling (BIM), the finite element analysis (FEA), and the finite difference method (FDM). By using BIM technology, the author attempts to establish a 3D information model and a bracing structure model. Based on the application programming interface and the C# language, the data conversion from BIM-ANSYS-FLAC3D is realized. The author then attempts to analyze the ground surface settlement and horizontal displacement during the excavation of the deep foundation pit through FLAC3D, and the purpose of which is to identify potential safety hazards so that reasonable control measures can be taken. The approach presented in this article has been validated in the Project of Qinhuai River Ship Lock. Since the excavation and the after-construction stages of this project have been completed smoothly, this approach has been proved valid and applicable.
Highlights
Recent years have seen a great concern on the construction safety of the deep foundation pit with complicated geological conditions due to an increasing number of accidents
Dynamic predictions of the safety risk during the whole construction process are inadequate due to the lack of research studies. erefore, this paper presents an approach for the construction safety of the deep foundation pit in water-rich soft soils, which combines the building information modeling (BIM), the finite element analysis (FEA), and the finite difference method (FDM)
Excavation of the deep foundation of the lower gate will induce the inhomogeneous settlement of the running hydraulic controlling sluice, as much as tilting and collapse, so that the construction safety of the lower gate is regarded as the key goal in the construction of this project. us, the construction of the lower gate is taken as an example, to explore the construction safety methods of deep excavations in water-rich soft soils based on BIM
Summary
Recent years have seen a great concern on the construction safety of the deep foundation pit with complicated geological conditions due to an increasing number of accidents. Erefore, this paper presents an approach for the construction safety of the deep foundation pit in water-rich soft soils, which combines the building information modeling (BIM), the finite element analysis (FEA), and the finite difference method (FDM). In water-rich soft soil areas, due to unpredictable geological and hydrological conditions, it will not be easy to precisely identify the potential safety hazards (such as deformation of supporting structures and ground settlement), as well as take reasonable control measures, and it would require dynamic integration of multisource information which may include monitoring measurements and calculated predictions (from the design data and the continuous monitoring data). Evaluating the actual construction process by utilizing updated measurement data obtained on site effectively has led to the birth and growth of the observational method [18,19,20]. e richness in the measurement data and controlling construction in a timely enough fashion by using observed movements are all supporting factors for the successful undertaking of the observational method [17, 20]
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