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Reversing formwork for manufacturing cast-in-situ prestressed concrete cylindrical fan foundation

A wind turbine foundation and concrete technology, which is applied in the direction of basic structure engineering and construction, can solve the problems of high cost and poor bending resistance, and achieve the effect of large bending moment, sufficient application and good economy

Active Publication Date: 2015-02-11
JIANGSU JINHAI NEW ENERGY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The independently expanded foundation has better compressive performance but poor bending resistance, and the cost is relatively high

Method used

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  • Reversing formwork for manufacturing cast-in-situ prestressed concrete cylindrical fan foundation
  • Reversing formwork for manufacturing cast-in-situ prestressed concrete cylindrical fan foundation
  • Reversing formwork for manufacturing cast-in-situ prestressed concrete cylindrical fan foundation

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Embodiment

[0022] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the reverse formwork consists of the reverse formwork tube wall 1, the reverse formwork horizontal strut 2, the flower basket bolt 3, the bottom positioning pile 4, the inner truss column 5, the inner truss inclined bar 6, the inner truss cross bar 7, the inner vertical Center column 8, hook 9, reverse formwork special-shaped column 10, inner truss cross brace 11, outer strut 12, reverse formwork special-shaped column oval hole 28, reverse formwork connecting bolt 29 are formed. When in use, hoist the integrally assembled inverted formwork into the excavated foundation pit, pour plain concrete 26 in the space between the inverted formwork tube wall 1 and the foundation pit wall, and shrink the flower basket bolt 3 after the plain concrete 26 is cured. , the connecting bolt 29 between the special-shaped column 10 of the reversed formwork and the cylinder wall 1 of the ...

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Abstract

The invention provides a reversing formwork for manufacturing a cast-in-situ prestressed concrete cylindrical fan foundation. The reversing formwork assembled in whole is placed into a dug foundation pit in a lifting manner. Turn buckles are contracted after plain concrete is poured in a space between the cylinder wall of the reversing formwork and the wall of the foundation pit, connecting bolts between specially-shaped piles of the reversing formwork and the cylinder wall of the reversing formwork move along elliptical holes, so as to enable the reversing formwork to be contracted, the demoulding of plain concrete is realized, and a cylindrical bearing ring inner wall and an inner die cylinder wall are formed after demoulding and used as an outer die and an inner die of a concreting cylinder body. An inner formwork matched with the reversing formwork consists of an inner formwork cylinder wall, inner support rods, inner formwork horizontal support rods, top fixing beams, inner formwork specially-shaped piles, turn buckles, foundation leveling bolts, inner truss uprights, inner truss oblique rods, inner truss cross rods, inner main uprights, lifting hooks, inner formwork specially-shaped pile elliptical holes and inner formwork connecting bolts, the formwork erecting and demoulding technology is identical to that of the reversing formwork, the pit is refilled with soil after the concrete cylinder is cured by filling the pit with steam, and a post-cast concrete slab is poured at the upper part.

Description

technical field [0001] The invention belongs to the technical field of foundation design for large-diameter towers of wind power generators, and in particular relates to a reverse formwork for manufacturing cast-in-situ prestressed concrete cylinder fan foundations. Background technique [0002] At present, for fan foundations in hard soil areas with low groundwater levels, independent expansion foundations are generally used. The independently expanded foundation has better compressive performance but poor bending resistance, and its cost is relatively high. Contents of the invention [0003] In order to overcome the deficiencies of the independent expansion foundation of the existing fan under the hard soil foundation, the purpose of the present invention is to provide a reverse formwork for manufacturing the cast-in-place prestressed concrete cylinder fan foundation, which is used to manufacture the cast-in-place prestressed concrete cylinder Fan base. The steel formw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/44E02D27/42
CPCE02D27/425E02D2250/0007
Inventor 马人乐吕兆华张明熠
Owner JIANGSU JINHAI NEW ENERGY TECH
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