Model testing apparatus for multidirectional horizontal loading on fan foundation

Abstract

The invention belongs to the technical field of offshore wind power foundations and discloses a model testing apparatus for multidirectional horizontal loading on a fan foundation. The model testing apparatus comprises a model box filled with a foundation soil, wherein a loading frame is mounted on the top of the model box through horizontal fixed slideways and longitudinal fixed slideways; a foundation model is mounted in the foundation soil of the model box; the top of the foundation model is connected with a loading rod, which extends upward into the loading frame; a guide plate, a horizontal beam, a fixed beam, guide pulleys and an angle-control servo motor are mounted on the loading frame; and a first steel wire rope, a second steel wire rope, a counterweight beam, a load counterweight block and a load-control servo motor are mounted on the fixed beam. The model testing apparatus can control multidirectional horizontal monotonic and cyclic loads on the wind power foundation model,so as to achieve accurate control over any directions and frequencies of loads on the foundation model; and the model testing apparatus rotationally simulates wind loads in different directions and different frequencies in an actual project and can perform loading according to a wind-rose diagram.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power foundations, and in particular relates to a multi-directional bearing capacity model test device for offshore wind power foundations. Background technique [0002] With the development of economy and social progress, people's awareness of environmental protection is increasing day by day. At the same time, the depletion of traditional energy sources forces the development of energy sources to renewable energy sources. Wind energy is a green energy that is widely used at present. The main application form There are two forms of onshore wind power and offshore wind power. Offshore wind power foundations mainly include gravity foundations, pile foundations, barrel foundations and other foundation forms. Due to the multi-directional nature of wind loads, the direction and magnitude of wind loads in a specific area are often presented in the form of a wind rose diagram. However, at present...

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Problems solved by technology

However, at present, most of the foundation design only considers the load in one direction. This method is likely to cause large load values ​​on the one hand, and the design is conservative, resulting in waste of materials and increased costs; on the other hand, the monsoon is not considered in the load values. Periodic wind loads will reduce the safety of the foundation, and overturning damage will easily occur when the wind load is large

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