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Horizontal construction joint dislocation repairing method for concrete panel

A technology of concrete panels and horizontal construction joints, applied in water conservancy projects, dams, sea area projects, etc., can solve the problems of concrete panel extrusion damage, affecting the anti-seepage function of panels, endangering the safe operation of dams, etc., to achieve resistance to external loads, Convenience of construction and effect of ensuring safety

Inactive Publication Date: 2016-07-06
POWERCHINA HUADONG ENG COPORATION LTD +1
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AI Technical Summary

Problems solved by technology

For concrete face rockfill dams in strong earthquake areas, under the action of seismic loads, it is very easy to cause the staggering of the horizontal construction joints of the face plates, and the concrete face will be crushed and broken, and the steel bars will be bent or sheared in a certain range of horizontal construction joints. , which seriously affects the anti-seepage function of the panel and endangers the safe operation of the dam

Method used

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  • Horizontal construction joint dislocation repairing method for concrete panel
  • Horizontal construction joint dislocation repairing method for concrete panel
  • Horizontal construction joint dislocation repairing method for concrete panel

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Embodiment Construction

[0017] This embodiment is a method of repairing the horizontal construction joints of concrete panels:

[0018] a. Determine the damage range of the panel around the horizontal construction joint: when the horizontal construction joint of the panel is staggered, it will inevitably cause damage to the concrete panel 2 within a certain range around the horizontal construction joint 1. Therefore, when the horizontal joint of the panel is repaired, it is necessary to determine the level The extent of panel damage around construction joints. The method adopted in this embodiment is: determine according to the width, occurrence and development of the cracks around the horizontal construction joint 1; for areas that cannot be determined, the damage of the panel is detected by drilling and coring. In this example, d1 = 1-2m for the damage range of the lower part of the horizontal construction joint 1 of the panel, and d2 = 2-3m for the damage range of the upper part.

[0019] b. Chis...

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Abstract

The invention relates to a horizontal construction joint dislocation repairing method for a concrete panel to improve safety and reliability of engineering operation. According to the technical scheme, the horizontal construction joint dislocation repairing method for the concrete panel is characterized by comprising the following steps that firstly, the damage range of the portions, on the periphery of a horizontal construction joint, of the concrete panel is determined; secondly, the portions, in the damage range, of the concrete panel are chiseled away; thirdly, deformed reinforcing steel bars are cut and repaired, the deformed reinforcing steel bars in the damage range are cut off, and replacement reinforcing steel bars are used for replacing the cut-off reinforcing steel bars; and fourthly, concrete panel backfilling is conducted, concrete is used for backfilling the chiseled area, and a repairing panel connecting an upper concrete panel body with a lower concrete panel body of the horizontal construction joint is formed, wherein the slope of the repairing panel is 1:K, K ranges from L-0.05 to L+0.05, and the designed slope ratio of a down slope of the original concrete panel is 1:L. The horizontal construction joint dislocation repairing method is suitable for similar engineering such as dislocation repairing treatment of horizontal construction joints of concrete panel rockfill dams.

Description

technical field [0001] The invention relates to a method for repairing the dislocation of horizontal construction joints of concrete panels. It is suitable for similar projects such as the repair and treatment of horizontal construction joints in the face of concrete face rockfill dams. Background technique [0002] In the concrete face rockfill dam project, the face joints formed due to construction needs or other reasons are construction joints, and construction joints are divided into horizontal construction joints and vertical joints according to their functions. In general, the horizontal construction joint of the panel is bounded by 1 / 2 of the thickness of the panel at the joint, the upper joint surface is perpendicular to the panel surface, and the lower joint surface is in the form of a horizontal joint. [0003] In recent years, with the emergence of modern heavy-duty rolling equipment, the dam height of concrete face rockfill dams has been increasing. At present, ...

Claims

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Application Information

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IPC IPC(8): E02B7/06E02B3/16
CPCE02B7/06E02B3/16
Inventor 周建波王永明王登银
Owner POWERCHINA HUADONG ENG COPORATION LTD
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