CN-122014513-A - Multi-column prestress space tower structure and construction assembly system

CN122014513ACN 122014513 ACN122014513 ACN 122014513ACN-122014513-A

Abstract

The invention discloses a multi-column-shaped prestressed space tower structure and a construction assembly system, wherein the structure comprises a foundation, an inner column, an outer column, a prestressed cable, reinforced concrete ring beams, a steel tower cylinder and a flexible film, the foundation is an expanded concrete foundation, a support column is of an inner-outer two-layer tubular structure, the lower end of the support column is connected with the foundation through grouting or bolts, embedded steel bars at the upper end of the support column and the ring beams are poured into a whole, the prestressed cable penetrates the inner column and is anchored with the foundation and the ring beams, the ring beams are connected with the steel tower cylinder through flanges, and the outer periphery of the outer column is wrapped with the flexible film to form a surrounding barrier. The structure solves the defects of difficult transportation and construction, insufficient lateral rigidity, easy fatigue of joints, high steel consumption and the like of the traditional tower through multi-column splitting, differential inclined arrangement and prestress drawknot, realizes welding-free assembly, reduces the steel consumption of the tower, reduces the maximum horizontal displacement, and has high stability, fatigue resistance and economy.

Inventors

HAO HUAGENG
LIU SHENGYUAN
LIU YUHUI
GAO JIANHUI
Liu Shanzhuo
WANG JUN
Yang Yinting
SHEN JIPING
ZHU HONGRUI
Bai Yinkai
Han Congming
ZHANG PENG
HAO XINTONG

Assignees

华能国际工程技术有限公司
中国华能集团清洁能源技术研究院有限公司
北方联合电力有限责任公司新能源分公司
中国华能集团香港有限公司

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (10)

1. A multi-column prestressed space tower structure, comprising: The foundation is an expanded concrete foundation, a prestressed duct is formed in the foundation, and a plurality of circular tubular supporting columns are distributed on the upper part of the foundation along the circumferential direction at equal included angles; The support columns are arranged in an inner layer of columns and an outer layer of columns, the inclination angle of the outer layer of columns is larger than that of the inner layer of columns, and the section size of the inner layer of columns is larger than that of the outer layer of columns; The lower ends of the inner layer column and the outer layer column are connected with foundation grouting or are connected with bolts, the upper ends of the inner layer column and the outer layer column are embedded with steel bars, and the steel bars extend into the reinforced concrete ring beam and are cast into a whole with the reinforced concrete ring beam; the prestressed cable penetrates through the inner layer column, the lower end of the prestressed cable is anchored in a prestressed duct of the foundation, and the upper end of the prestressed cable penetrates out of the reinforced concrete ring beam and is anchored; the reinforced concrete ring beam is provided with anchor bolt holes which are fixedly connected with the steel tower cylinder through flanges, and the peripheries of all outer layer columns are wrapped with flexible films to form a surrounding structure.
2. The multi-column prestressed space tower structure of claim 1, wherein said support columns are made of reinforced concrete or concrete-filled steel tube.
3. The multi-column prestressed space tower structure according to claim 1, wherein grooves are formed at the connecting positions of the inner column and the outer column on the foundation; the lower ends of the inner layer column and the outer layer column are respectively embedded in the grooves, and are fixedly connected with foundation grouting or bolts.
4. The multi-column prestressed space tower structure of claim 1, wherein prestressed channels are formed on the reinforced concrete ring beams corresponding to the penetrating positions of the prestressed cables; The prestressed cable passes through the prestressed duct, and the upper end of the prestressed cable passes through the upper surface of the reinforced concrete ring beam upwards through the prestressed duct.
5. The multi-column prestressed space tower structure of claim 1, wherein said flexible film forms a containment structure that encloses both the inner and outer columns within their enclosed space.
6. The multi-column prestressed space tower structure of claim 1, wherein said inner column and outer column are uniformly distributed along the circumferential direction of the foundation at equal angles; And the number of the inner layer columns is matched with that of the outer layer columns.
7. The multi-column prestressed space tower structure of claim 1, wherein said prestressed cables are post-tensioned longitudinal prestressed cables, and said prestressed cables, foundation, inner column and reinforced concrete ring Liang Xietong form an integral prestressed structure.
8. The multi-column prestressed space tower structure of claim 4, wherein said prestressed duct is open at a center of the reinforced concrete ring beam.
9. The multi-column prestressed space tower structure according to claim 1, wherein the embedded bars of the inner column are uniformly distributed along the circumferential direction of the inner column, the embedded bars of the outer column are uniformly distributed along the circumferential direction of the outer column, and the extending direction of each embedded bar is matched with the casting forming direction of the reinforced concrete ring beam; The inner column, the outer column and the reinforced concrete ring Liang Wei are combined to form a shell-like space truss structure.
10. A construction assembly system for a multi-column prestressed space tower, comprising: the multi-column prestressed space tower structure, prefabricated module, prestressed tensioning device, grouting connecting component, flange positioning piece and flexible film coating mechanism of any one of claims 1-9; the prefabrication forming module is used for adaptively processing a round tubular inner layer column, an outer layer column and an expanded concrete foundation; the prestress tensioning device is matched with a prestress cable of the tower structure and completes tensioning and anchoring; the grouting connection assembly is matched with the lower end of the groove of the foundation and the lower end of the inner layer column and the lower end of the outer layer column to finish grouting connection; The flange positioning piece is matched with the anchor bolt hole of the reinforced concrete ring beam and the flange of the steel tower barrel to complete coaxial positioning; The flexible film coating mechanism is circumferentially distributed along the periphery of the outer layer column and completes the sealing coating of the flexible film.

Description

Multi-column prestress space tower structure and construction assembly system Technical Field The invention belongs to the technical field of space concrete structures, and particularly relates to a multi-column-shaped prestress space tower structure and a construction assembly system. Background With the improvement of the single-machine capacity of the wind generating set, the height of the tower breaks through 150m, the traditional single-tube steel tower, the lattice type angle steel tower and the steel tube diagonal truss type tower expose a plurality of defects under the coupling effect of limit load and fatigue load, and particularly, the large diameter of the bottom leads to high manufacturing, transportation and site girth joint construction difficulties, large overall slenderness ratio, obvious second-order effect, insufficient lateral rigidity resistance, easy fatigue generation of nodes, large site high-altitude welding workload, high quality control difficulty, exponential increase of steel consumption along with the height, poor economy, complex truss structure connecting nodes, weak fatigue resistance and high construction cost. Disclosure of Invention The invention aims to provide a multi-column prestress space tower structure and a construction assembly system, which are used for solving the technical defects of large diameter, difficult transportation and construction, high slenderness ratio, insufficient side stiffness, easy fatigue of joints, high-altitude welding, difficult quality control, high steel consumption, poor economy, complex truss joints and weak fatigue resistance of the traditional tower. In order to achieve the above object, the present application provides the following technical solutions: In a first aspect of the application, there is provided a multi-column prestressed space tower structure, comprising: The foundation is an expanded concrete foundation, a prestressed duct is formed in the foundation, and a plurality of circular tubular supporting columns are distributed on the upper part of the foundation along the circumferential direction at equal included angles; The support columns are arranged in an inner layer of columns and an outer layer of columns, the inclination angle of the outer layer of columns is larger than that of the inner layer of columns, and the section size of the inner layer of columns is larger than that of the outer layer of columns; The lower ends of the inner layer column and the outer layer column are connected with foundation grouting or are connected with bolts, the upper ends of the inner layer column and the outer layer column are embedded with steel bars, and the steel bars extend into the reinforced concrete ring beam and are cast into a whole with the reinforced concrete ring beam; the prestressed cable penetrates through the inner layer column, the lower end of the prestressed cable is anchored in a prestressed duct of the foundation, and the upper end of the prestressed cable penetrates out of the reinforced concrete ring beam and is anchored; the reinforced concrete ring beam is provided with anchor bolt holes which are fixedly connected with the steel tower cylinder through flanges, and the peripheries of all outer layer columns are wrapped with flexible films to form a surrounding structure. In an alternative embodiment, the support columns are made of reinforced concrete or steel pipe concrete. In an alternative embodiment, grooves are formed at the connection positions of the inner layer column and the outer layer column on the basis; the lower ends of the inner layer column and the outer layer column are respectively embedded in the grooves, and are fixedly connected with foundation grouting or bolts. In an alternative embodiment, the reinforced concrete ring beam is provided with a prestressed duct corresponding to the penetrating position of the prestressed cable; The prestressed cable passes through the prestressed duct, and the upper end of the prestressed cable passes through the upper surface of the reinforced concrete ring beam upwards through the prestressed duct. In an alternative embodiment, the enclosure structure formed by the flexible film wraps the inner layer column and the outer layer column in the enclosed space. In an alternative embodiment, the inner layer columns and the outer layer columns are uniformly distributed along the circumferential direction of the foundation at equal included angles; And the number of the inner layer columns is matched with that of the outer layer columns. In an alternative embodiment, the pre-stressing cables are post-tensioning longitudinal pre-stressing cables, and the pre-stressing cables, the foundation, the inner column and the reinforced concrete collar Liang Xietong form an integral pre-stressing structure. In an alternative embodiment, the prestressed duct is formed in the center of the reinforced concrete ring beam. In an alternative embodiment, the embedded bars of the