A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Applicability of Research on Single-Pile Composite Foundation Load Test for High-Rise Buildings
Plain concrete pile composite foundations in loess areas predominantly rely on single-pile composite foundation load tests to determine bearing capacity. Despite high-rise buildings’ composite foundations meeting the design criteria for bearing capacity through load testing, they still exhibit considerable settlements post-construction. This study aims to investigate the suitability of determining the bearing capacity of high-rise buildings’ composite foundations through load testing. Employing the finite element method, the settlement development characteristics of single-pile and group-pile composite foundations under high-rise building conditions are calculated and compared. Results indicate that under high-rise building conditions, the settlement of the composite foundation is significantly greater than that of the single-pile composite foundation. Furthermore, the settlement difference between single-pile and group-pile composite foundations increases with more substantial pile separation and lower pile length and diameter. Based on settling discrepancies, a reliability index is established to describe the characteristic values of the bearing capacity of single-pile composite foundations. The analysis reveals a risk of unreliability in the load test of the single-pile composite foundation, and there is a high probability of experiencing significant settlement if the composite foundation of high-rise buildings adopts the bearing capacity characteristic value of that test.
Applicability of Research on Single-Pile Composite Foundation Load Test for High-Rise Buildings
Plain concrete pile composite foundations in loess areas predominantly rely on single-pile composite foundation load tests to determine bearing capacity. Despite high-rise buildings’ composite foundations meeting the design criteria for bearing capacity through load testing, they still exhibit considerable settlements post-construction. This study aims to investigate the suitability of determining the bearing capacity of high-rise buildings’ composite foundations through load testing. Employing the finite element method, the settlement development characteristics of single-pile and group-pile composite foundations under high-rise building conditions are calculated and compared. Results indicate that under high-rise building conditions, the settlement of the composite foundation is significantly greater than that of the single-pile composite foundation. Furthermore, the settlement difference between single-pile and group-pile composite foundations increases with more substantial pile separation and lower pile length and diameter. Based on settling discrepancies, a reliability index is established to describe the characteristic values of the bearing capacity of single-pile composite foundations. The analysis reveals a risk of unreliability in the load test of the single-pile composite foundation, and there is a high probability of experiencing significant settlement if the composite foundation of high-rise buildings adopts the bearing capacity characteristic value of that test.
Applicability of Research on Single-Pile Composite Foundation Load Test for High-Rise Buildings
Atlantis Highlights in Engineering
Zhao, Gaofeng (editor) / Mei, Guoxiong (editor) / Xu, Zengguang (editor) / Zhang, Fei (editor) / Zhang, Liang (author) / Wang, Tiehang (author) / Zhao, Zaikun (author) / Ruan, Jiabin (author)
International Conference on Civil Architecture and Urban Engineering ; 2023 ; Xiamen, China
2024-02-11
9 pages
Article/Chapter (Book)
Electronic Resource
English
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