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CN-122014506-A - Bridge tower integrated canyon type wind power generation system

CN122014506ACN 122014506 ACN122014506 ACN 122014506ACN-122014506-A

Abstract

The invention relates to the technical field of wind power generation and bridge structure engineering, and discloses a bridge tower integrated canyon type wind power generation system. The system comprises two natural mountain bodies which are distributed oppositely, a suspension bridge structure which is arranged between the two mountain bodies in a crossing mode, and a wind tower which is arranged in the canyon. The middle part or the upper part of the wind tower is fixedly connected with the suspension bridge structure through a structural rigid connection node, so that the wind tower and the suspension bridge form a bridge tower integrated stress system. The wind tower is under the transverse load that produces under the wind load effect and transmits to suspension bridge main cable through the connected node to transmit to the both sides natural mountain body through the anchor structure, thereby sharing tower foundation moment of flexure, improve structural stability. The system is provided with a pressure sensor and is linked with a variable pitch control system to realize active safety control. The invention fully utilizes the canyon topography condition and the horizontal bearing capacity of the suspension bridge, improves the high-altitude wind energy utilization efficiency, and solves the problem that the wind power is difficult to solve at present.

Inventors

  • YANG JIANWEN

Assignees

  • 杨建文

Dates

Publication Date
20260512
Application Date
20260331

Claims (10)

  1. 1. An integrated tower-bridge canyon wind power generation system, comprising: Two natural mountain bodies which are distributed oppositely, wherein a canyon space is formed between the two natural mountain bodies; The suspension bridge structure is spanned between two natural mountain bodies and comprises a main cable, a bridge deck structure and anchoring structures respectively arranged in the two natural mountain bodies, and two ends of the main cable are respectively anchored in the anchoring structures; at least one wind tower arranged in the canyon, wherein the foundation of the wind tower is arranged at the bottom of the canyon or at a set position under a mountain; at least one wind generating set arranged at a fixed position on the windward side of the wind tower; Wherein, the The top of the wind tower is connected with the suspension bridge structure through a structure connecting node capable of transmitting bending moment and shearing force, so that the wind tower and the suspension bridge structure form a bridge tower integrated stress structure system; The structure connecting nodes form a force transmission channel between the wind tower and the main cable, so that transverse load generated by the wind tower under the action of wind load is transmitted to the main cable through the structure connecting nodes, the main cable generates axial tension, and the transverse load is transmitted to two natural mountain bodies through the anchoring structure so as to share bending moment born by a wind tower foundation; the suspension bridge structure is distributed along the transverse stress direction of the wind tower and is used for providing transverse support for the wind tower and the wind generating set on the wind tower by utilizing the horizontal bearing capacity of the suspension bridge structure; And a pressure sensor is arranged between the wind tower and the suspension bridge structure and is electrically connected with a variable pitch control system of the wind generating set and used for adjusting the working angle of the wind generating set blade according to the detected stress state.
  2. 2. The integrated tower canyon wind power system of claim 1, wherein: The top height of the wind tower is flush with or higher than the bridge deck height of the suspension bridge.
  3. 3. The integrated tower canyon wind power system of claim 1, wherein: The structure connection node comprises an annular reinforcing structure arranged on the periphery of the wind tower and a transverse connection beam extending from the annular reinforcing structure to the direction of the suspension bridge, and the transverse connection beam is connected with the suspension bridge structure to form a structure connection relation capable of transmitting bending moment and shearing force.
  4. 4. The tower integrated canyon wind power system of claim 3, wherein: The transverse connecting beam is fixedly connected with the suspension bridge structure through high-strength bolt connection, welding connection or bolt welding combination connection.
  5. 5. The integrated tower canyon wind power system of claim 1, wherein: and a damping structure is arranged between the wind tower and the suspension bridge structure and used for reducing the vibration response of the bridge tower integrated structure under the wind load effect.
  6. 6. The integrated tower canyon wind power system of claim 5, wherein: the damping structure is at least one of a hydraulic damper, a viscous damper, a friction damping device or a tuned mass damper.
  7. 7. The integrated tower canyon wind power system of claim 1, wherein: The wind generating set is arranged at the side surface position of the windward side of the wind tower.
  8. 8. The integrated tower canyon wind power system of claim 1, wherein: the suspension bridge structure is used for hoisting wind tower components and wind generating set components in the wind tower construction process.
  9. 9. The construction method of the bridge tower integrated canyon type wind power generation system is characterized by comprising the following steps of: S1, wind resource evaluation, topographic mapping and engineering geological investigation are carried out between two oppositely distributed natural mountain bodies, and system structural design is carried out according to the wind resource evaluation, topographic mapping and engineering geological investigation; s2, constructing a suspension bridge structure between two natural mountain bodies, and respectively anchoring two ends of a main cable in the two natural mountain bodies; S3, constructing at least one wind tower foundation in the canyon and installing a wind tower body; S4, building the wind tower to a position which is level with the bridge deck of the suspension bridge or higher than the height of the bridge deck; S5, connecting the wind tower with a suspension bridge structure through a structure connecting node capable of transmitting bending moment and shearing force to form a bridge tower integrated stress structure system; S6, installing at least one wind generating set on the windward side of the wind tower; and S7, installing a pressure sensor between the wind tower and the suspension bridge structure, connecting the pressure sensor with a variable pitch control system of the wind generating set, and adjusting the blade angle of the wind generating set according to the stress state.
  10. 10. The construction method according to claim 9, wherein: In step S2, a main cable anchoring chamber is formed in a natural mountain by combining artificial excavation and gas fracturing technology.

Description

Bridge tower integrated canyon type wind power generation system Technical Field The invention relates to the technical field of wind power generation and bridge structure engineering, in particular to a bridge tower integrated canyon type wind power generation system. Background Wind power generation technology is widely applied to different areas such as plain, hills, mountains and seas as an important renewable energy source utilization mode. According to different arrangement environments and topography conditions, the existing wind power generation systems can be roughly divided into two types of wide-area wind power generation and narrow-area wind power generation. The wind power generation in a wide area is generally arranged in open areas such as flat land, soil slopes, ridges, beaches or sea surfaces, and most of the wind power generation sets are in an independent tower support mode, namely, the wind power generation sets are arranged at the top of the wind tower, and the wind tower and the foundation thereof independently bear the dead weight, running load and bending moment and shearing force generated by wind load action of a fan. The structural form is mature in engineering application, but under the development trend of continuously increasing the height of the tower and continuously increasing the single-machine capacity, the problems of single stress form, concentrated bending moment of the tower foundation, increased construction and hoisting difficulty and the like are increasingly outstanding. Especially when fan mounting height further improves, the wind tower is in single-column cantilever stress state usually, lacks effectual outside lateral support, leads to body stability, basic scale, material consumption and operation maintenance cost all to receive great influence. In addition, the existing wide-area independent tower wind power system usually depends on large-scale external hoisting equipment to complete the installation of towers, cabins and blades, and the construction organization of the system has higher requirements on site conditions and hoisting capacity. Under the condition of complex terrain, the construction feasibility and the equipment operation and maintenance convenience of the ultra-high tower are limited to a certain extent. Meanwhile, the system mainly adopts a centralized arrangement form at the top of the fan, and the utilization mode of dominant wind energy resources with different heights under the condition of a complex wind field is relatively limited. For narrow areas or special mountain canyon environments, there are also several wind power generation arrangements in the prior art. For example, some solutions employ a suspended wind power structure, carrying the wind power plant by means of flexible suspension members. Although the structure is suitable for narrow space conditions to a certain extent, because the bearing system has larger flexibility, the structure is easy to generate vibration, vibration and fatigue response under the action of continuous wind load, pulsating wind or complex wind field, thereby bringing adverse effects on the running safety and long-term stability of the system. In addition, some schemes adopt a mountain-crossing building frame or a mountain-blocking building frame mode, a transverse steel structure supporting system is arranged between high-level terrains on two sides, and a wind power generation device is arranged on the transverse steel structure supporting system. The scheme tries to acquire high-altitude wind energy by using the height difference condition between canyons or mountain bodies, but when the heights of support structures at two sides are larger, the transverse spans are longer, the size of a fan impeller is further increased, the transverse frame body often faces the problems of difficult construction of ultra-high and ultra-long members, complex assembly in the air, high overall stability requirement, insufficient short-time strong wind resistance and the like. Particularly, when the middle upright post supporting condition is lacking, the large-span transverse steel structure needs to bear a large bending moment, and the engineering implementation difficulty and the operation safety risk are both obviously increased. In the complex terrain areas with mountain bodies facing each other at two sides of mountain land or canyon, the high altitude wind speed is usually large, the wind direction is relatively concentrated, and the wind energy generation system has good wind energy development conditions. Meanwhile, natural mountain bodies on two sides naturally form a space opposite relation, and the space opposite relation has the potential of providing transverse support and load transmission for a high-level structure objectively. However, the existing wind power generation system is not an independent tower scheme in a wide area, a suspension scheme in a narrow area or a mountain-crossing frame-building