CN206706687U - A kind of concrete slab extruding, which destroys, repairs structure - Google Patents

Abstract

The utility model discloses a concrete panel extrusion damage repair structure and a construction method. There are vertical joints (2) on the concrete panel (1), and the feature is that a The rubber plate (3) has a concrete panel damage zone (1.1) above the vertical joint (2), and the concrete in the concrete panel damage zone (1.1) is excavated in advance and filled with repair materials (5); A V-shaped groove (7) is reserved at the top of the vertical seam (2), and plastic material (6) is filled in the V-shaped groove (7), and the concrete panel (1) above the vertical seam (2) ) is provided with an anti-seepage cover sheet (9), which overcomes the shortcomings of the dam deformation in the prior art, especially the face dam whose settlement has not been stabilized, often occurs repeated extrusion damage, and has the ability to completely solve the damage caused by the face extrusion to the concrete face. Advantages of damage and leakage.

Description

A Concrete Panel Extrusion Damage Repair Structure

technical field

The utility model relates to the technical field of concrete face dam rockfill, and more specifically relates to a repair structure for concrete face extrusion damage.

Background technique

Extrusion failure of concrete face dams is a prominent problem encountered by high face rockfill dams in recent years. Face dams such as Sanbanxi and Busi. Extrusion damage mostly occurs in compressive vertical joints, developing downward from the dam crest to the middle of the dam or 1/3 of the dam height; for high dams, the process of downward development of extrusion damage to vertical joints is often accompanied by horizontal extrusion destroy. Extrusion damage causes the peeling of the concrete on the surface of the face plate and the increased deformation of the copper waterstop, and the extrusion damage often occurs in the water level amplitude range, which seriously affects the durability and long-term operation safety of the dam. According to the change of leakage after extrusion failure of some face rockfill dams at home and abroad, it can be known that extrusion failure is one of the main reasons for leakage of face dams. The amount of leakage is more than 40 times that of before.

For panel extrusion damage, the current conventional treatment method is to chisel out the damaged concrete and recast the concrete panel according to the original design requirements. However, for dam deformation, especially for face dams whose settlement has not been stabilized, repeated extrusion failures often occur. For example, after the first-level vertical joints of Tiansheng Bridge are repaired, they fail again in the repaired area.

Contents of the invention

The purpose of the utility model is to overcome the disadvantages of the above-mentioned background technology, and propose a concrete panel extrusion damaged repair structure.

The technical scheme of the utility model is implemented through the following measures: a concrete panel extrusion damage repair structure, there is a vertical seam on the concrete panel, a rubber plate is installed on the middle and upper part of the vertical seam, and a rubber plate is installed on the vertical seam There is a damaged area of the concrete panel above the joint, and the concrete in the damaged area of the concrete panel is excavated in advance and filled with repair materials; a V-shaped groove is reserved on the top of the vertical joint, and plastic materials are filled in the V-shaped groove. An anti-seepage cover is arranged on the concrete panel above the vertical joint, and both sides of the anti-seepage cover are fixed on the concrete panel by expansion bolts and steel pressure strips.

In the above technical solution: an interface agent is applied between the repair material and the chiseled concrete panel.

In the above technical solution: an anti-seepage cover primer is applied between the anti-seepage cover and the repair material.

In the above technical scheme: the depth of the damaged area of the concrete panel above the vertical seam should not be less than 5 cm; the width of the rubber plate matches the height of the dam and the degree of damage, and the The transverse width of the rubber sheet is 2.5-5 cm, and the depth is 15 cm.

In the above technical solution: the top width of the V-shaped groove is 10 cm, and the depth is 5 cm.

The utility model has the following advantages: 1. By chiseling the middle and upper part of the original vertical seam and filling the rubber plate, the extrusion deformation after water storage is absorbed again, and a closed water-stop structure is set above the repaired vertical seam, which can Completely solve the problem of damage and leakage caused by panel extrusion to the concrete panel. 2. The utility model proposes applicable materials and specific construction techniques for both above-water and underwater treatment, and has great popularization and application value.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: concrete panel 1, concrete panel damaged area 1.1, vertical joint 2, rubber plate 3, interface agent 4, repair material 5, plastic filler 6, V-shaped groove 7, anti-seepage cover sheet primer 8, anti-seepage cover sheet 9. Expansion bolts and steel beading 10.

detailed description

The implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation of the present utility model, they are only examples, and the advantages of the present utility model will become clearer and easier to understand.

As shown in Fig. 1: a concrete panel extrusion damage repair structure, there is a vertical seam 2 on the concrete panel 1, a rubber plate 3 is installed on the middle and upper part of the vertical seam 2, above the vertical seam 2 There is a concrete panel damage area 1.1, and the concrete in the concrete panel damage area 1.1 is excavated in advance and filled with repair materials 5; a V-shaped groove 7 is reserved at the top of the vertical joint 2, and the V-shaped groove 7 is filled There is a plastic material 6, and an anti-seepage cover sheet 9 is arranged on the concrete panel 1 above the vertical joint 2, and the two sides of the anti-seepage cover sheet 9 are fixed on the concrete panel 1 by expansion bolts and steel bead 10 ; between the repair material 5 and the chiseled concrete panel 1, an interface agent 4 is applied; between the anti-seepage cover sheet 9 and the repair material 5, an anti-seepage cover primer is applied 8.

The chiseling depth of the damaged area 1.1 of the concrete panel above the vertical joint 2 should not be less than 5 cm; the width of the rubber plate 3 matches the height of the dam and the degree of damage, and the The transverse width is 2.5-5 cm, and the depth is 15 cm; the top width of the V-shaped groove 7 is 10 cm, and the depth is 5 cm.

The utility model relates to a construction method for repairing a structure damaged by extrusion of a concrete panel, which is characterized in that it includes the following specific steps;

①. After removing the original water-stop structure at the top of the damaged vertical joint 2, chisel out the concrete in the concrete panel 1 that has been crushed and damaged, and the depth of chiseling is determined according to the depth of damage; as shown in Figure 1, the The surface damage chiseling thickness S1 of the concrete panel 1 is determined according to the degree of damage, but not less than 5 cm.

②. Cut down a slot along the original vertical slot 2, and then select a suitable rubber plate 3 according to the depth of the slot and stuff it into the slot;

③. First, apply the interface agent 4 on the chiseled surface of the concrete panel 1 that has been chiseled out, so as to enhance the bonding strength between the repairing material 5 and the original concrete surface; 5. Repair the damaged concrete panel 1 according to the original slope ratio, and reserve a V-shaped groove 7 on the top of the vertical joint 2;

④. Fill the V-shaped groove 7 with plastic material 6, determine the width of the anti-seepage cover sheet 9 according to the width of the damaged concrete, and the two sides of the anti-seepage cover sheet 9 exceed the boundary of the chiseled concrete panel 1 by no less than 10 cm.

The top water-stop structure includes plastic material 6, V-shaped groove 7, anti-seepage cover sheet primer 8, anti-seepage cover sheet 9, expansion bolts and steel bead 10

Before the anti-seepage cover sheet 9 is pasted, the matching anti-seepage cover sheet primer 8 is painted on the concrete panel 1, and the two sides of the anti-seepage cover sheet 9 are fixed with expansion bolts and steel bead 10. Concrete panel 1.

The depth of the damaged concrete panel 1 is not less than 5 centimeters; the transverse width of the rubber plate 3 is 2.5-5 centimeters, and the depth is 15 centimeters (S2 in the figure); the V-shaped groove 7 The top width is 10 centimeters (L in the figure), and the depth is 5 centimeters (S3 in the figure); the interface agent 4 and repair material 5 are determined according to the above-water and underwater restoration. When repairing above water, the interface agent 4 uses polymer cement slurry and inorganic interface agent, and the repair material can be fine stone concrete; when repairing underwater, the repair material is underwater epoxy mortar or fine stone concrete.

The anti-seepage cover sheet 9 is matched with the anti-seepage cover sheet primer 8. When repairing above water, conventional primer is selected, and when repairing underwater, an underwater modified epoxy coating (underwater adhesive) is used.

The parts not described in detail above are all prior art.

Claims (5)

1. A concrete panel extrusion damage repair structure has a vertical joint (2) on the concrete panel (1), and is characterized in that: a rubber plate (3) is installed on the middle and upper part of the vertical joint (2), There is a concrete panel damage zone (1.1) above the vertical joint (2), and the concrete in the concrete panel damage zone (1.1) is excavated in advance and filled with repair materials (5); A V-shaped groove (7) is reserved at the top of the vertical slit (2), and plastic material (6) is filled in the V-shaped groove (7). Above the vertical slit (2) The concrete panel (1) is provided with an anti-seepage cover sheet (9), and both sides of the anti-seepage cover sheet (9) are fixed on the concrete panel (1) by expansion bolts and steel pressure strips (10). 2. A concrete panel extrusion damage repair structure according to claim 1, characterized in that: an interface agent (4) is applied between the repair material (5) and the chiseled concrete panel (1) . 3. A concrete panel extrusion damage repair structure according to claim 1 or 2, characterized in that: paint between the anti-seepage cover sheet (9) and the repair material (5) Anti-seepage cover slip primer (8). 4. A concrete panel extrusion damage repair structure according to claim 3, characterized in that the chiseling depth of the concrete panel damage zone (1.1) above the vertical joint (2) should not be less than 5 cm ; The width of the rubber plate (3) matches the damage degree of the dam height, the transverse width of the rubber plate (3) is 2.5-5 cm, and the depth is 15 cm. 5. A repairing structure for concrete panel extrusion damage according to claim 4, characterized in that: the top width of the V-shaped groove (7) is 10 cm, and the depth is 5 cm.