Reinforced type anchor rod for transmission tower foundation and calculation method of reinforced type anchor rod
A power transmission tower and reinforced technology, which is applied in the direction of foundation structure engineering, building, sheet pile wall, etc., can solve the problem of not increasing the bonding strength between the anchor rod and the grouting material, so as to increase the contact surface area and improve the axial friction. Resistance, improve the effect of pulling up and stabilizing
Active Publication Date: 2013-10-16
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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Problems solved by technology
[0005] (2) In the existing technology, only simple anchoring measures are taken for the lower end of the anchor rod, and no additional measures are taken to increase the bonding strength between the anchor rod and the grouting material
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[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0031] Such as figure 1 As shown, a reinforced bolt used for the foundation of a power transmission tower includes a bolt body 3, the surface of the bolt body 3 is provided with threads 7, and more than half of the length of the bolt body 3 is buried in the rock mass 9, the remaining part of the bolt body 3 is exposed outside the rock mass 9, and the surface of the bolt body 3 is provided with anti-pull nuts 6 at intervals, and the bolt body 3 embedded in the rock mass 9 The total bonding strength between the anchor body 3 and the grouting material 5 is fixed in the anchor pile 4 through the grouting material 5, and the upper end of the anchor body 3 exposed outside the rock mass 9 is provided with a fixing nut 1, and the backing plate 2 is fixed through the anchor pile 4. Nut 1 is fixed on rock mass surface 8.
[0032] The material of the bolt body 3...
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The invention discloses a reinforced type anchor rod for a transmission tower foundation and a calculation method of the reinforced type anchor rod. The reinforced type anchor rod comprises an anchor rod body. Screw threads are arranged on the surface of the anchor rod body, one part of the anchor rod body, with one half length, is embedded in a rock mass, the rest part of the anchor rod body is exposed out of the rock mass. Uplift nuts are arranged on the surface of the anchor rod body at intervals, the anchor rod body, embedded into the rock mass, is fixed in an anchor pile through a grouting material according to the required total bonding strength between the anchor rod body and the grouting material, a fixing nut is arranged at the upper end of the anchor rod body, exposed out of the anchor rod body, and a base plate is fixed on the surface of the rock mass through the fixed nut. The reinforced type anchor rod provided by the invention has the advantages that the bonding strength between the anchor rod and the grouting material in the rock foundation of the transmission tower is greatly improved, and the up-pull resisting stability of the whole rock foundation under high-load external force is reinforced.
Description
technical field [0001] The invention relates to a reinforced anchor for transmission tower foundations, in particular to a reinforced anchor for transmission tower foundations and a calculation method thereof, belonging to the field of high-voltage, ultra-high voltage, and extra-high voltage transmission line tower foundations. Background technique [0002] At present, in the field of overhead transmission lines in China, when rock anchor pile foundations are used for the foundation of mountain towers, the anchors are all made of smooth-surfaced round steel, and the lower ends of the anchors are provided with simple anchoring measures. Since the outer surface of the bolt is smooth, it cannot form a good bond with the poured grouting material. When subjected to the uplift load, the displacement is large or it is pulled out. It has seriously affected the anti-pull effect of the anchor rod under the uplift load. Therefore, in order to further improve the bond strength between ...
Claims
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Inventor 赵光泰
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP