Wind power foundation damping and energy dissipation device and construction process method thereof

Abstract

The invention discloses a wind power foundation damping and energy dissipation device and a construction process method thereof. The device comprises an outer damping and energy dissipation rubber ring embedded between a concrete foundation top zone and the outer wall of a fan barrel. An outer build-in steel ring is embedded between the outer damping and energy dissipation rubber ring and the concrete foundation top zone. A rubber waterstop is arranged between the outer damping and energy dissipation rubber ring and the outer wall of the fan barrel. During construction of a concrete foundation, a position is reserved according to the size of the damping and energy dissipation rubber ring; the build-in steel ring is embedded during construction of foundation concrete; the rubber waterstop is pasted to the outer wall of the fan barrel; after the concrete reaches certain strength, the surface of the concrete in the reserved position of the damping and energy dissipation rubber ring is coated with a binding agent; the damping and energy dissipation rubber ring is embedded between the rubber waterstop and the embedded build-in steel ring; and a waterproof layer is laid on the upper portion of the energy dissipation rubber ring on the top face of the concrete foundation. Under the action of fan continuous loads, the fan concrete foundation is prevented from being damaged and destroyed.

Description

technical field [0001] The invention belongs to the technical field of shock absorption and energy consumption in structural engineering, and in particular relates to a wind power foundation shock absorption and energy consumption device and a construction process method thereof. Background technique [0002] Wind power is a new type of energy that has developed rapidly in my country in recent years. The main body of the equipment is a steel cylinder, and the lower part is a reinforced concrete expansion foundation. This kind of foundation has the characteristics of simple construction and low engineering cost, and is the most common form of foundation. At present, this type of foundation design is based on the design specifications compiled with reference to the relevant theories and technical requirements of the tower building foundation. However, due to the large differences in the structural form and load properties of the fan and the traditional tower building, a large ...

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Problems solved by technology

At present, this type of foundation design is based on the design specifications compiled with reference to the relevant theories and technical requirements of the tower building foundation. However, due to the large differences in the structural form and load properties of the fan and the traditional tower building, a large number of problems have been found in the actual application process. After the foundation of the fan has been used for a period of time, cracks appear on the contact surface between the steel cylinder and the concrete. As the fan continues to operate, the cracks continue to expand, and the upper cylinder swings greatly, causing the concrete inside the foundation to be crushed by the steel cylinder, affecting the performance of the fan. Normal operation, and even a serious accident of fan collapse, which brought great economic losses to the country and enterprises

According to the site investigation and failure mechanism analysis, in the early stage of operation of the structure, there is no crack on the contact surface between the upper steel cylinder and the concrete, and the machine operates normally, but because the wind load is a long-term continuous repetitive load, it is also the main load and control of this type of structure Load, the load forms the long-term fatigue load caused by the steel cylinder to the concrete, and the energy and damage accumulated by the steel cylinder on the contact surface of the concrete foundation continue to expand, making the contact surface between the concrete and the steel cylinder separate, and with the continuous expansion and downward extension of the crack , the force transmission point of the steel cylinder to the foundation continues to move downward, and finally the internal concrete is crushed, causing the structure to lose its bearing capacity and be destroyed

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