Pressure dispersion-type anchorage cable crushing prevention grouting bearing plate structure
A decentralized, bearing plate technology, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as steel strand corrosion, engineering accidents, grouting body damage, etc., to increase anti-corrosion performance and avoid tension failure , The effect of simple construction
Inactive Publication Date: 2013-04-24
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Problems solved by technology
In this way, the bearing capacity of the grouting body given by the design calculation is sufficient, but the grouting body in the shear stress concentration area in the anchorage section may be damaged, especially the grouting body near the bearing plate
Once the grouting body is damaged, it will accelerate the corrosion of the steel strand, which may cause engineering accidents.
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[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0013] refer to figure 1 and figure 2 , the pressure dispersion type anchor cable anti-crush grouting bearing plate structure of the present invention, the plate body is a circular steel plate bearing plate 2 arranged at intervals in the anchoring section L2, the plate body has a through hole for installing the grouting pipe and along the plate surface The through holes provided at intervals in the ring for the steel strands 5 to pass through. A spiral steel bar 1 is welded and fixed on the inner surface of the bearing plate 2, and the spiral steel bar 1 surrounds the steel strand 5 in a circumferential direction. The spiral steel bar 1 can greatly alleviate the fracturing damage of the grouting body near the bearing plate 2, and at the same time, because it wraps the slurry outside the steel strand of the anchor cable, it can increase its anti-corro...
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The invention relates to a pressure dispersion-type anchorage cable crushing prevention grouting bearing plate structure. With the adoption of the pressure dispersion-type anchorage cable crushing prevention grouting bearing plate structure, grouting near the bearing plates can be effectively prevented from being invalid, thus ensuring an anchorage cable of an anchorage section to work normally. According to pressure dispersion-type anchorage cable crushing prevention grouting bearing plate structure disclosed by the invention, a plate body is formed by arranging the bearing plates (2) of a circular steel plate in the anchorage section (L2) at intervals, a through hole used for installing a grouting pipe and through holes which are formed along the ring direction of a plate surface and are supplied for steel strands (5) to penetrate through are formed in the plate body, and a spiral steel bar (1) is respectively welded and fixed on the inner side plate surface of each bearing plate (2) and circumferentially wraps each steel strand (5).
Description
technical field [0001] The invention relates to geotechnical engineering reinforcement technology, in particular to a pressure-distributed anchor cable anti-crushing grouting body bearing plate structure. Background technique [0002] As a new type of geotechnical engineering reinforcement technology, the pressure dispersing anchor cable has been widely used in practical engineering. The pressure-distributed anchor cable changes the stress form of the traditional tension-type anchor cable, and converts the anchor force through several bearing plates spaced at a certain distance into pressure to act on the multi-section anchor. Due to the more uniform bonding stress of this type of anchor cable, and the advantage of high compressive strength of the anchorage section under the action of surrounding rock pressure, the anchorage force can be greatly improved. It can be seen that the bearing plate is an important component of the pressure dispersion anchor cable. The existing b...
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IPC IPC(8): E02D15/04E02D5/74
Inventor 蒋楚生梁瑶李庆海贺钢李飞吴兵
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD