A construction method of fiberglass-steel root-shaped power tower pile clusters
A technology for power towers and construction methods, which is applied in the construction field of fiberglass tree-rooted power tower piles, and can solve problems such as cracks at the feet of power towers
Active Publication Date: 2018-09-14
STATE GRID CORP OF CHINA +1
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Problems solved by technology
[0009] In order to solve the technical problem of cracks appearing in the foot of the power tower due to the force of the pulsating wind speed on the electric wire and the power tower, the invention provides a construction method of pile clusters of fiberglass tree-shaped power towers
Method used
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Embodiment Construction
[0031] Such as Figure 9 , a construction method of fiberglass tree-rooted power tower pile clusters, comprising the following steps:
[0032] ①. With the square foundation pit 106 formed by the center of the four caps as the boundary, drill a predetermined curved hole 103 with a pipe-pipe guide drill obliquely downward to the outside of the square foundation pit 106;
[0033] ②. Insert the knotless end of the fiberglass column 101 into the curved hole 103;
[0034] ③. Fill cement between the FRP column 101 and the hole wall to form a cement layer 102;
[0035] ④. The end of the knot 104 of the fiberglass column 101 is exposed in the foundation pit 106 of the cap;
[0036] ⑤. After the cement is solidified, support piles 105 are formed, and a plurality of support piles form a cluster of piles for power poles and towers.
[0037] Such as Figure 10 As can be seen, the support pile 105 includes a fiberglass column 101 and a cement layer 102 outside it. The cement layer 102...
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The invention relates to a construction method of a tree-root-shaped electric tower pile cluster made of glass fiber reinforced plastics. The tree-root-shaped electric tower pile cluster comprises four bearing platforms on the electric tower feet, wherein support pile columns of the bearing platforms extend outwards and downwards outside a square formed by connecting the centers of the four bearing platforms of an electric tower. The axes of the support pile columns are curved, and each support pile column comprises a glass fiber reinforced plastic column body and a cement layer outside the glass fiber reinforced plastic column body. With the adoption of the tree-root-shaped cluster structure, the comprehensive quantity of motion after the cluster is formed is very small although the quantity of motion of each supporting pile column is relatively large, the bearing platforms are supported and tensioned in all directions, and the bearing platforms are still stable under the action of pulsation wind and no crack occurs.
Description
technical field [0001] The invention relates to a plurality of piles driven into the foundation through a concrete structure, in particular to a construction method of pile clusters of fiberglass tree-rooted power towers. Background technique [0002] As the foundation structure supporting the main pile of the iron tower, in the case of a relatively deep support layer, such as figure 1 As shown, after driving a plurality of relatively small piles 50 in the foundation, reinforced concrete is used to make footings 51 connecting the tops of these piles 50, and the footings 51 are connected to the main piles 52 of the iron tower. The method is generally used (refer to the following patent document 1 etc.). [0003] In addition, the fixing structure of the footing 51 and the main pile 52 can be roughly classified into a bolt fixing method, an anchor member fixing method, a support plate fixing method, and the like. The bolt fixing method is as figure 1 Shown, is the mode that ...
Claims
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IPC IPC(8): E02D27/42E02D27/16
CPCE02D27/16E02D27/42
Inventor 刘永欢张茂娟
Owner STATE GRID CORP OF CHINA