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Group anchor structure for improving ductility of large foundation interface and concrete parameter correction method

A parameter correction, concrete technology, applied in basic structure engineering, construction, sheet pile wall and other directions, can solve the problem of not considering the influence of fiber-induced fatigue load and long-term effect, etc., to improve the cracking mode, improve the internal force distribution, improve the resistance The effect of crack strength and deformability

Pending Publication Date: 2022-06-28
CEEC JIANGSU ELECTRIC POWER DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formula is too stringent for the crack width under short-term loads, and the fiber action as well as the effects of fatigue loads and long-term effects are not considered in the code

Method used

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  • Group anchor structure for improving ductility of large foundation interface and concrete parameter correction method
  • Group anchor structure for improving ductility of large foundation interface and concrete parameter correction method
  • Group anchor structure for improving ductility of large foundation interface and concrete parameter correction method

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Embodiment

[0041] Example: as figure 1 As shown in the figure, a group anchor structure for improving the ductility of large-scale foundation interface, the group anchor structure is placed vertically inside the foundation, including: anchor bolt 2, anchor plate 3 (including upper anchor plate 31 and lower anchor plate 32), cage type Truss 4, X-shaped foundation shear arm 5 and fiber concrete 6.

[0042] The upper anchor plate 31 and the lower anchor plate 32 are located at the top and bottom of the foundation 1, and are connected by high-strength anchor bolts 2 through nuts. The cage truss 4 is connected with the anchor plate 3 by welding; the anchor plate 3 is located in the middle of the X-shaped foundation shear arm 5 . The anchor bolt 2 , the upper anchor plate 31 and the lower anchor plate 32 , the cage truss 4 and the X-shaped foundation shear arm 5 are integrated by pouring fiber concrete 6 .

[0043] In a specific embodiment, the design of the group anchor structure specifical...

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Abstract

The invention discloses an anchor group structure for improving the ductility of a large foundation interface and a concrete parameter correction method. The structure comprises anchor bolts, anchor plates, a cage type truss, an X-shaped foundation shear arm and fiber concrete. The cage type truss is connected with the anchor plate through welding; the anchor plate is located in the middle of the X-shaped foundation anti-shear arm and integrated with the X-shaped foundation anti-shear arm by pouring fiber concrete. The anchor bolts are located between the upper side anchor plate and the lower side anchor plate, penetrate through the high-strength anchor plates and are fixed through nuts. Meanwhile, a fiber concrete crack correction method is provided, wherein the method comprises the average crack width, the average crack distance, the short-term crack expansion coefficient and the long-term crack expansion coefficient. According to the invention, external macrocracks of the foundation and such diseases as corrosion and freezing expansion caused by the macrocracks are reduced, the durability of the foundation is improved, and the service life of the foundation is prolonged.

Description

technical field [0001] The invention relates to a group anchor structure for improving the ductility of a large-scale foundation interface and a parameter determination method thereof, and belongs to the technical field of reinforced concrete foundation structures of iron towers. Background technique [0002] The anchor bolt is connected with the upper tower structure through the tower foot plate, and the anchor bolt connection is the most common way to connect the foundation and the tower structure. Due to insufficient tensile and shear resistance of reinforced concrete around the anchor plate, internal cracks often appear and even extend to the surface, which seriously affects the mechanical properties and long-term service life of the foundation. [0003] The anchor bolts are usually designed to be of equal length. The mechanical transmission and deformation of the anchor bolts between the concrete foundations have very obvious uneven characteristics. This uneven distribu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74E02D27/01E02D15/02
CPCE02D5/74E02D27/01E02D15/02E02D2600/30
Inventor 宁帅朋王金昌吴锁平余亮李布辉顾章义陶青松汤鹏张庆吴勇陈诚杨云
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST
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