Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Case Study of Flexible Prefabricated Impermeable Underground Support Structure
In order to improve the recovery rate and economic benefit of recyclable support structure, a new type of flexible prefabricated impermeable support structure was introduced in this paper. The steel composite–panel coupling structure was formed. Under the specific geological environment (e.g., urban underground space) with great construction difficulties, the polymer-steel panel composite structure exhibited a good capability of bearing deformation; at the same time, the grouting after the steel structure can prevent the leakage. Finite element model of prefabricated excavation was established for the composite structure. The deformation characteristics of prefabricated structures were achieved. In the calculation model, the thickness of the steel panel was designed to be 3 mm, 6 mm, 9 mm and 12 mm, and the thickness of the polymer impermeable layer was designed behind the steel panel to be 10 mm, 20 mm and 30 mm, respectively, to obtain the maximum deformation of the supporting structure. According to the analysis of the deformation law, it is more suitable to design the thickness of the steel panel to 6 mm and the thickness of the polymer impermeable layer to 20 mm, which can save materials and meet the safety requirements of the project. The in situ layered excavation experiment for the foundation pit was performed, and the effectiveness of the assembled support structure was verified through the strain experiment on the steel panel.
Case Study of Flexible Prefabricated Impermeable Underground Support Structure
In order to improve the recovery rate and economic benefit of recyclable support structure, a new type of flexible prefabricated impermeable support structure was introduced in this paper. The steel composite–panel coupling structure was formed. Under the specific geological environment (e.g., urban underground space) with great construction difficulties, the polymer-steel panel composite structure exhibited a good capability of bearing deformation; at the same time, the grouting after the steel structure can prevent the leakage. Finite element model of prefabricated excavation was established for the composite structure. The deformation characteristics of prefabricated structures were achieved. In the calculation model, the thickness of the steel panel was designed to be 3 mm, 6 mm, 9 mm and 12 mm, and the thickness of the polymer impermeable layer was designed behind the steel panel to be 10 mm, 20 mm and 30 mm, respectively, to obtain the maximum deformation of the supporting structure. According to the analysis of the deformation law, it is more suitable to design the thickness of the steel panel to 6 mm and the thickness of the polymer impermeable layer to 20 mm, which can save materials and meet the safety requirements of the project. The in situ layered excavation experiment for the foundation pit was performed, and the effectiveness of the assembled support structure was verified through the strain experiment on the steel panel.
Case Study of Flexible Prefabricated Impermeable Underground Support Structure
Iran J Sci Technol Trans Civ Eng
Hu, Dengping (Autor:in) / Guo, Chengchao (Autor:in) / Chu, Xuanxuan (Autor:in)
01.12.2021
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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