丁红岩^1,2,3, 何少华¹, 张浦阳^1,2,3, 翟少华¹
AuthorsHTML:丁红岩^1,2,3, 何少华¹, 张浦阳^1,2,3, 翟少华¹
AuthorsListE:Ding Hongyan^1,2,3, He Shaohua¹, Zhang Puyang^1,2,3, Zhai Shaohua¹
AuthorsHTMLE:Ding Hongyan^1,2,3, He Shaohua¹, Zhang Puyang^1,2,3, Zhai Shaohua¹
Unit:1. 天津大学建筑工程学院，天津 300072；2. 天津大学水利工程仿真与安全国家重点实验室，天津 300072；3. 天津大学滨海土木工程结构与安全教育部重点实验室，天津 300072
Unit_EngLish:1．School of Civil Engineering, Tianjin University, Tianjin 300072, China
2．State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
3．Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin University, Tianjin 300072, China
Abstract_Chinese:以江苏启东海域某海上风电工程的筒型基础为研究对象, 通过大型有限元软件ABAQUS对初始筒型基础结构建立多种试算模型并进行有限元计算, 重点研究弧形过渡段结构张拉控制应力、预应力孔道数量和布置、预应力钢绞线数量以及各类普通钢筋配置方式等因素对筒型基础新型预应力弧形过渡段传力特性及整体结构承载性能的影响．根据模型计算结果, 确定最终优化调整方案为：施加有效预应力1 000 MPa, 预应力孔道数量不变, 钢绞线根数优化为10根, 竖向普通钢筋为60道φ25 mm, 环向钢筋由φ28 mm优化为φ22 mm．
Abstract_English:Based on the bucket foundation in an offshore wind project in the sea of Qidong，Jiangsu province，a variety of trial finite element models were established using finite element software ABAQUS to calculate the initial bucket foundation. Some key factors such as the tension control stress, the number and arrangement of prestressed duct, the number of prestressed steel bar, and the configuration of common steel bar in the structure were particularly considered to research how those impacts act on the force transmission characteristics of arc transition section, and the bearing performance of bucket foundation. According to the calculation results，the final optimal adjustment plan is that the applied effective prestress is 1 000 MPa，the number of channels remains unchanged，the number of prestressed steel bar is reduced to 10，the number of vertical reinforced bar is 60 with φ25 mm，and the hoop reinforced bar is optimized from φ28 mm to φ22 mm.
Keyword_Chinese:筒型基础; 过渡段; 优化设计; 预应力
Keywords_English:bucket foundation; arc transition section; optimal design; prestress

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