Physical Model on Deformation Behavior of Super-Large Pile Group

Xie, Tao; Xing, Fan; Jiang, Zezhong

doi:10.1061/40932(246)46

Cited by 1 publication

(1 citation statement)

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“…Numerical analysis methods involving finite element method (FEM) were widely used to understand the bearing capacity behavior of piles and then numerical methods were established (Ribeiro and Paiva, 2014;Zhan, Wang, and Liu, 2012). The model of a super-large pile group was developed to study the mechanical action, the distribution feature of internal force and the deformation behavior of pile group under horizontal load (Xie et al, 2005). Besides, other methods were also proposed to study the pile vertical bearing capacity (Cao, Zhao, and Liu, 2011;Liu, Wang, and Yan, 2013).…”

Section: Introductionmentioning

confidence: 99%

Study on Load-bearing Characteristics of Different Types of Pile Group Foundations for an Offshore Wind Turbine

Lang

Lian

Ding

2015

Journal of Coastal Research

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Lang, R.; Liu, R.; Lian, J., and Ding, H., 2015. Study on load-bearing characteristics of different types of pile group foundations for an offshore wind turbine.Elevated pile-cap foundation is one of the most popular foundation types for offshore wind turbines. Form selection and design are the keys in the construction of offshore wind farms. Because offshore wind turbines are high-rise structures, a reasonable and applicable foundation can ensure the normal operation of wind turbines. Meanwhile, it can decrease the size of foundation and reduce the cost of construction effectively. Four types of pile group foundations named BPG-type, SPG-type, VPG-type, and CPG-type are developed. Combined with laboratory model experiments, a numerical simulation method is established and verified in this paper. The vertical bearing capacity, horizontal bearing capacity and bending bearing capacity are studied comparatively with the numerical simulation method. Combined with practical engineering, the applicability of the foundations is evaluated. The results indicate that BPG-type and SPG-type have the stronger vertical bearing capacity, horizontal bearing capacity and bending bearing capacity than VPG-type and CPG-type in the same amount of steel. In addition, batter piles can effectively increase the bearing capacity of pile foundations. The VPG-type needs to increase the size of foundation to meet the requirements of wind turbine operation. In practical engineering, the combination of vertical piles and batter piles can increase the bearing capacity of pile group foundations and decrease the cost of construction. ADDITIONAL INDEX WORDS:Elevated cap, pile group foundation, vertical bearing capacity, horizontal bearing capacity, bending bearing capacity.

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