Prestress hollow interlayer concrete-filled steel tube lattice type mixed jacket: Fid-Bau Portal

Prestress hollow interlayer concrete-filled steel tube lattice type mixed jacket

WANG YUHANG / QIU XIAOYI / ZHOU XUHONG / WANG BIN / GAO SHAN

The invention discloses a prestress hollow interlayer concrete-filled steel tube lattice type mixed jacket, and relates to the technical field of offshore wind power generation. The prestress hollow interlayer concrete-filled steel tube lattice type mixed jacket is composed of a draught fan, a steel tower barrel, a switching device, a lattice type jacket and steel piles. Corner columns of the lattice type jacket are connected with the steel piles through flanges; the switching device is arranged at the top of the jacket; the steel tower barrel is connected with the upper part of the switching device through flanges; the draught fan is arranged on the steel tower barrel; the lattice type jacket can be triangular or quadrilateral, and the corner columns are all made of prestressed hollow interlayer concrete-filled steel tubes; and inclined rods in the lattice type jacket are made of common steel pipes, and concrete is poured into cross joints. Main members of the lattice type jacket adopt hollow interlayer concrete-filled steel tubes and common steel tubes, the consumption of steel and concrete is reduced, full-length continuous prestress is applied to the main supporting rod pieces, the tensile property of the structure can be improved, concrete cracking is prevented, and the lattice type jacket is a brand-new offshore wind power jacket form.

本发明公开了一种预应力中空夹层钢管混凝土格构式混合导管架，涉及海上风力发电技术领域。该体系由风机、钢塔筒、转接装置，格构式导管架和钢桩构成。所述格构式导管架的角柱与所述钢桩采用法兰连接；所述转接装置布置于导管架顶部；所述钢塔筒与转接装置上部采用法兰连接；所述风机布置在钢塔筒上；所述格构式导管架可采用三角形或四边形，角柱均采用预应力中空夹层钢管混凝土；格构式导管架中的斜杆采用普通钢管，交叉节点灌注混凝土。格构式导管架主要构件采用中空夹层钢管混凝土和普通钢管，钢材和混凝土的用量减少，并对主要支撑杆件施加通长连续预应力，能够改善结构抗拉性能、防止混凝土开裂，是一种全新的海上风电导管架形式。

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