CN105648984A - Repair structure for concrete panel buckling damage and construction method - Google Patents

Repair structure for concrete panel buckling damage and construction method Download PDF

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Publication number
CN105648984A
CN105648984A CN201610012350.9A CN201610012350A CN105648984A CN 105648984 A CN105648984 A CN 105648984A CN 201610012350 A CN201610012350 A CN 201610012350A CN 105648984 A CN105648984 A CN 105648984A
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concrete panel
old
toe board
repairing
old concrete
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CN201610012350.9A
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CN105648984B (en
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梁现培
王永明
周建波
王登银
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PowerChina Huadong Engineering Corp Ltd
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PowerChina Huadong Engineering Corp Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/16Sealings or joints
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B7/00Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/02Fixed barrages
    • E02B7/04Dams across valleys
    • E02B7/06Earth-fill dams; Rock-fill dams

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Revetment (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The invention relates to a repair structure for concrete panel buckling damage and a construction method. The repair structure aims at achieving the purposes that damage to an old concrete panel seepage prevention system is reduced, the repaired structure can be effectively fused with the original seepage prevention system, and the safety and reliability of engineering operation are enhanced. According to the technical scheme, the repair structure comprises an old concrete panel and an old toe board arranged on the periphery of the old concrete panel and copper waterstops I mounted in the old concrete panel, the old concrete panel is provided with multiple cracks, the repair range is determined according to the crack on the top, and after surface waterstops in the vertical seam and the peripheral seam within the repair range are removed, V-shaped grooves in the tops of the vertical seam and the peripheral seam are backfilled with M20 cement mortar flushed with the upper surface of the old concrete panel; a new toe board is poured on the old toe board, and the surface of the old concrete panel is sequentially laid with geotechnical cloth and emulsified asphalt; and cooper waterstops II with F-shaped or W-shaped or special-shaped connectors are mounted on the upper portion of the emulsified asphalt, and the new concrete panel is poured.

Description

The repairing structure of a kind of concrete slab tympanites destruction and construction method
Technical field
The present invention relates to repairing structure and construction method that a kind of concrete slab tympanites is destroyed, be primarily adapted for use in the repairing work of the similar failure modes such as Face Slab of Concrete-faced Rockfill tympanites destruction.
Background technology
CFRD is because of its good economy, quick construction, the feature such as reliability of engineering and extensive use. For concrete slab, failure mode has multiple, and tympanites is destroyed as one of its failure mode. The tympanites causing panel is destroyed following reason: the eliminating in time of the reverse water of the dam foundation causes the tympanites of concrete slab to break; The material adopting lateral deformation bigger fills dam body, and dam material expands after meeting water, causes that the tympanites of panel is destroyed; Construction time dam body rolls leakiness, and the excessive sedimentation of later stage dam body causes that the tympanites of panel middle and lower part is destroyed. Concrete slab has a strong impact on the antiseepage function of panel, the safe operation of crisis dam, it is therefore desirable to take engineering measure to repair after producing tympanites destruction. Traditional method for repairing and mending is to be cut by the panel of tympanites destroyed area, again builds panel and arranges water-stopping system. The method efficiency of construction is low, and perimeter panel, base copper sealing, bottom bedding material are all had certain damage by panel in cutting process; Additionally, be there is certain inadaptability by the method in perfoliate crack repairing.
Summary of the invention
The technical problem to be solved in the present invention is: for above-mentioned Problems existing, repairing structure and construction method that a kind of concrete slab tympanites destroys are provided, reduce the damage of old concrete panel seepage prevention system, convenient and quick construction, structure after repairing effectively can merge with former seepage prevention system, the safety and reliability that enhancement engineering runs, has a good application prospect.
The technical solution adopted in the present invention is: the repairing structure that a kind of concrete slab tympanites is destroyed, old toe board including old concrete panel, old concrete panel periphery, and it is arranged on the Copper water stop I in old concrete panel, it is characterized in that: described old concrete panel has some cracks, a crack according to topmost determines repairing scope, and after removing the surface watertight seal of vertical lap seam within the scope of repairing, periphery fissure, described vertical lap seam, periphery fissure top V-groove in the backfill M20 cement mortar concordant with old concrete panel upper surface;Having built new toe board above described old toe board, described old concrete panel surface is equipped with geotextiles and emulsified asphalt successively; The Copper water stop II of F type, W type and opposite sex joint is installed on described emulsified asphalt top, and builds novel concrete panel.
In V-groove between described novel concrete panel and new toe board and novel concrete panel top layer arranges surface watertight seal; this surface watertight seal includes SR plastic filler and the antiseepage protective cover sheet on SR plastic filler top layer, and with band steel/angle steel and bolt, antiseepage protective cover sheet is anchored.
Described repairing ranges for outwards or a crack of old concrete panel topmost is extended up distance d1, d1=2��4m.
The gradient that is connected of described novel concrete panel top and old concrete panel surface is 1:K, K=3��4.
Described geotextiles model is 400g/m2; The coating layer thickness of described emulsified asphalt is be more than or equal to 5mm.
Described new toe board thickness is d3=(0.7��1.0) d2, d2 is old concrete plate thickness, the concrete of new toe board label identical with old toe board employing and match ratio.
The construction method of the repairing structure that a kind of concrete slab tympanites is destroyed, it is characterised in that step is as follows:
A. repairing area is determined: repair and range for outwards or a crack of old concrete panel topmost is extended up distance d1, d1=2��4m;
B. the clear table of patch area: in the repairing area of old concrete panel, the surface watertight seal of vertical lap seam between old concrete panel and old toe board, periphery fissure is removed clean, including vertical lap seam, periphery fissure top V-groove in plastic sealing filler, antiseepage protective cover sheet, fixed flat steel/angle steel and fixing bolt;
C.V type groove backfills: after the surface watertight seal in repairing area is removed, M20 cement mortar is adopted to backfill closely knit by the V-groove at vertical lap seam, periphery fissure top, and with the flush of old concrete panel, the quality mixture ratio of cement mortar is cement: fluvial sand: water=1:4.03:(0.85��0.88);
D. the laying of geotextiles and emulsified asphalt: lay geotextiles and emulsified asphalt at old concrete panel surface, geotextiles is positioned at bottom emulsified asphalt, and geotextiles model is 400g/m2, the coating layer thickness of emulsified asphalt is be more than or equal to 5mm;
E. the burying underground of Copper water stop II: within the scope of repairing, the Copper water stop II of geotextiles and the F type installed above of emulsified asphalt, W type and opposite sex joint;
F. the building of new toe board: after old toe board surface dabbing being processed, building new toe board on old toe board, new toe board adopts the concrete of label identical with old toe board and match ratio, and thickness is d3=(0.7��1.0) d2, d2 is old concrete plate thickness;
G. the building of novel concrete panel: the concrete strength of new toe board is built novel concrete panel above emulsified asphalt, strengthened vibrating to Copper water stop II side is concrete simultaneously after reaching the 80% of design strength; The gradient that is connected of novel concrete panel top and old concrete panel surface is 1:K, K=3��4;
H. surface watertight seal construction: in the V-groove between novel concrete panel and new toe board and novel concrete panel top layer arranges surface watertight seal; this surface watertight seal includes SR plastic filler and the antiseepage protective cover sheet on SR plastic filler top layer, and with band steel/angle steel and bolt, antiseepage protective cover sheet is anchored.
The invention has the beneficial effects as follows: a. safety: The present invention reduces cutting old concrete panel, it is to avoid cut the damage to old concrete panel seepage prevention system and bottom bedding material, Transition Materials in process; And the filling of employing geotextiles and emulsified asphalt between old concrete panel and novel concrete panel, reduce the old concrete panel effect of contraction to novel concrete panel, it is ensured that the safety of engineering operation; B. reliability: in the present invention, novel concrete panel top adopts the gradient of 1:K to be connected with old concrete panel, wherein K=3��4, novel concrete panel and old concrete panel is made effectively to merge one, the effect of external load is coordinated, resisted to the bulk deformation adapting to dam body, has stronger reliability;C. practicality: the present invention is simple to operate, convenient construction, it is not necessary to special engineering equipment, there is stronger practicality.
Accompanying drawing explanation
Fig. 1 is the profile of the present invention.
Fig. 2 is the part sectioned view of the present invention.
Detailed description of the invention
Such as Fig. 1, shown in Fig. 2, the present embodiment is repairing structure and the construction method of a kind of concrete slab tympanites destruction, including old concrete panel 101, the old toe board 102 of old concrete panel periphery, it is arranged on the Copper water stop I 103 in old concrete panel, and vertical lap seam between old concrete panel 101 and old toe board 102, the surface watertight seal of periphery fissure is (containing vertical lap seam, plastic sealing filler in the V-groove of periphery fissure top, antiseepage protective cover sheet, fixed flat steel/angle steel, fixing bolt etc.), old concrete panel 101 top has some cracks, one crack 104 of its topmost is the major control factors determining repairing area, namely repair and range for crack 104 extended range d1 outwards or upwards, during repairing, first remove the surface watertight seal of vertical lap seam, periphery fissure in repairing area, then M20 cement mortar 1 is adopted to backfill the V-groove at vertical lap seam, periphery fissure top, it is sequentially carried out geotextiles 2, the laying of emulsified asphalt 3 and burying underground of Copper water stop II 4 more from below to up, last new toe board 5 and the novel concrete panel 6 of building successively, and in the V-groove between novel concrete panel 6 and new toe board 5 and novel concrete panel 6 top layer arranges surface watertight seal according to relevant regulations and requirement.
The surface watertight seal reset includes SR plastic filler 7 and the antiseepage protective cover sheet 8 on SR plastic filler top layer; SR plastic filler 7 adopts mechanical execution, to ensure its density; Antiseepage protective cover sheet 8 anchors according to specification and design related request band steel/angle steel and bolt.
The Specific construction step of the present embodiment is as follows:
A. determining repairing area: the situation that repairing scope is destroyed according to concrete slab tympanites is determined, generally, old concrete panel 101 topmost crack 104 is the major control factors determining repairing area; Repair and range for outwards or a crack 104 of old concrete panel 101 topmost is extended up distance d1, d1=2��4m, depending on concrete condition to d1 value;
B. the clear table of patch area: in the repairing area of old concrete panel 101, the surface watertight seal (containing the plastic sealing filler in vertical lap seam, periphery fissure top V-groove, antiseepage protective cover sheet, fixed flat steel/angle steel, fixing bolt etc.) of vertical lap seam between old concrete panel 101 and old toe board 102, periphery fissure is removed clean, in order to avoid affecting next step construction;
C.V type groove backfills: after the surface watertight seal in repairing area is removed, M20 cement mortar 1 is adopted to backfill closely knit by the V-groove at vertical lap seam, periphery fissure top, and with the flush of old concrete panel 101, the match ratio (mass ratio) of cement mortar is cement: fluvial sand: water=1:4.03:(0.85��0.88);
D. the laying of geotextiles 2 and emulsified asphalt 3: for reducing the old concrete panel 101 effect of contraction to novel concrete panel 6, geotextiles 2 and emulsified asphalt 3 is laid between old concrete panel 101 and novel concrete panel 6, geotextiles 2 is positioned at bottom emulsified asphalt 3, emulsified asphalt 3 directly contacts with novel concrete panel 6 on geotextiles top, and geotextiles 2 model is 400g/m2, emulsified asphalt 3 coating layer thickness is not less than 5mm;
E. the burying underground of Copper water stop II 4: require within the scope of repairing according to specification and associated construction technology, the Copper water stop II 4 of geotextiles 2 and the F type installed above of emulsified asphalt 3, W type and opposite sex joint, the setting of Copper water stop II 4, undertakes the antiseepage of dam body together by the Copper water stop I 103 in old concrete panel 101;
F. the building of new toe board 5: after old toe board 102 surface dabbing is processed, old toe board is built new toe board 5, new toe board adopts the concrete with the old identical label of toe board 102 and match ratio, and thickness is d3=(0.7��1.0) d2, d2 is old concrete plate thickness;
G. the building of novel concrete panel 6: after the concrete strength of new toe board 5 reaches the 80% of design strength, novel concrete panel 6 is built above emulsified asphalt 3, novel concrete panel is built from bottom to top, strengthens vibrating to Copper water stop II 4 side is concrete simultaneously; Novel concrete panel 6 should cover old concrete panel 101 tympanites destroyed area, and novel concrete panel 6 distance from top old concrete panel 101 topmost crack distance is d1, wherein d1=2��4m, depending on concrete condition to d1 value; And novel concrete panel 6 top adopts the gradient of 1:K to be connected with old concrete panel 101, wherein K=3��4;
H. surface watertight seal construction: in the V-groove between novel concrete panel 6 and new toe board 5 and novel concrete panel 6 top layer arranges surface watertight seal, and this surface watertight seal includes SR plastic filler 7 and the antiseepage protective cover sheet 8 on SR plastic filler top layer; Wherein, SR plastic filler 7 adopts mechanical execution, to ensure its density; Antiseepage protective cover sheet 8 anchors according to specification and design related request band steel/angle steel and bolt.

Claims (7)

1. the repairing structure that a concrete slab tympanites is destroyed, including old concrete panel (101), the old toe board (102) of old concrete panel periphery, and it is arranged on the Copper water stop I (103) in old concrete panel, it is characterized in that: described old concrete panel (101) has some cracks, a crack (104) according to topmost determines repairing scope, and remove within the scope of repairing after the surface watertight seal of vertical lap seam and periphery fissure, the M20 cement mortar (1) concordant with old concrete panel (101) upper surface is backfilled in described vertical lap seam with the V-groove at periphery fissure top, new toe board (5) has been built in described old toe board (102) top, and described old concrete panel (101) surface is equipped with geotextiles (2) and emulsified asphalt (3) successively, the Copper water stop II (4) of F type, W type and opposite sex joint is installed on described emulsified asphalt (3) top, and builds novel concrete panel (6).
2. the repairing structure that a kind of concrete slab tympanites according to claim 1 is destroyed; it is characterized in that: in the V-groove between described novel concrete panel (6) and new toe board (5) and novel concrete panel (6) top layer arranges surface watertight seal; this surface watertight seal includes the antiseepage protective cover sheet (8) on SR plastic filler (7) and SR plastic filler top layer, and with band steel or angle steel and bolt, antiseepage protective cover sheet (8) is anchored.
3. the repairing structure that a kind of concrete slab tympanites according to claim 2 is destroyed, it is characterized in that: described repairing ranges for outwards or a crack (104) of old concrete panel (101) topmost is extended up distance d1, d1=2��4m.
4. the repairing structure that a kind of concrete slab tympanites according to claim 3 is destroyed, it is characterised in that: the gradient that is connected on described novel concrete panel (6) top and old concrete panel (101) surface is 1:K, K=3��4.
5. the repairing structure that a kind of concrete slab tympanites according to claim 3 is destroyed, it is characterised in that: described geotextiles (2) model is 400g/m2; The coating layer thickness of described emulsified asphalt (3) is be more than or equal to 5mm.
6. the repairing structure that a kind of concrete slab tympanites according to claim 3 is destroyed, it is characterized in that: described new toe board (5) thickness is d3=(0.7��1.0) d2, d2 is old concrete plate thickness, and new toe board and old toe board (102) adopt the concrete of identical label and match ratio.
7. the construction method of the repairing structure of a concrete slab tympanites destruction, it is characterised in that step is as follows:
7.1, repairing area is determined: repair and range for outwards or a crack (104) of old concrete panel (101) topmost is extended up distance d1, d1=2��4m;
7.2, the clear table of patch area: in the repairing area of old concrete panel (101), the surface watertight seal of vertical lap seam between old concrete panel (101) and old toe board (102), periphery fissure is removed clean, including vertical lap seam, periphery fissure top V-groove in plastic sealing filler, antiseepage protective cover sheet, fixed flat steel/angle steel and fixing bolt;
7.3, V-groove backfill: after the surface watertight seal in repairing area is removed, M20 cement mortar (1) is adopted to backfill closely knit by the V-groove at vertical lap seam, periphery fissure top, and with the flush of old concrete panel (101), the quality mixture ratio of cement mortar is cement: fluvial sand: water=1:4.03:(0.85��0.88);
7.4, the laying of geotextiles (2) and emulsified asphalt (3): lay geotextiles (2) and emulsified asphalt (3) on old concrete panel (101) surface, geotextiles (2) is positioned at emulsified asphalt (3) bottom, and geotextiles (2) model is 400g/m2, the coating layer thickness of emulsified asphalt (3) is be more than or equal to 5mm;
7.5, the burying underground of Copper water stop II (4): within the scope of repairing, the Copper water stop II (4) of geotextiles (2) and the F type installed above of emulsified asphalt (3), W type and opposite sex joint;
7.6, the building of new toe board (5): after old toe board (102) surface dabbing is processed, old toe board is built new toe board (5), new toe board adopts the concrete with old toe board (102) identical label and match ratio, thickness is d3=(0.7��1.0) d2, d2 is old concrete plate thickness;
7.7, the building of novel concrete panel (6): after the concrete strength of new toe board (5) reaches the 80% of design strength, build novel concrete panel (6) in emulsified asphalt (3) top, strengthen vibrating to Copper water stop II (4) side is concrete simultaneously; The gradient that is connected on novel concrete panel (6) top and old concrete panel (101) surface is 1:K, K=3��4;
7.8, surface watertight seal construction: in the V-groove between novel concrete panel (6) and new toe board (5) and novel concrete panel (6) top layer arranges surface watertight seal; this surface watertight seal includes the antiseepage protective cover sheet (8) on SR plastic filler (7) and SR plastic filler top layer, and with band steel/angle steel and bolt, antiseepage protective cover sheet (8) is anchored.
CN201610012350.9A 2016-01-07 2016-01-07 The repairing structure and construction method that a kind of concrete slab bulging is destroyed Active CN105648984B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106149634A (en) * 2016-08-25 2016-11-23 中国电建集团西北勘测设计研究院有限公司 The SR water sealing structure being connected between connecting plate with cut-pff wall seam and water-stopping method thereof
CN106836133A (en) * 2017-03-31 2017-06-13 长江勘测规划设计研究有限责任公司 Structure and construction method are repaired in a kind of concrete slab extruding destruction
CN108385614A (en) * 2018-01-25 2018-08-10 浙江水利水电学院 A kind of concrete facing board construction method of anti-floating towing force
CN109056658A (en) * 2018-08-29 2018-12-21 中国电建集团华东勘测设计研究院有限公司 Concrete slab defect repair construction method
CN110409189A (en) * 2019-07-03 2019-11-05 浩珂科技有限公司 A kind of production technology of the reinforced composite earthwork cloth of warp-knit tape net
CN110747721A (en) * 2019-11-28 2020-02-04 新乡市通达公路新科技有限公司 Road crack pouring machine

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WO2010112621A1 (en) * 2009-03-30 2010-10-07 Alberto Gonzalo Carracedo Method for sealing waterways and repairing joints and cracks in dams and the foundation rock without the need to discharge the reservoir and without interruption of operation, and for repairing joints and fissures in dams
CN203514261U (en) * 2013-10-25 2014-04-02 中国水电顾问集团中南勘测设计研究院有限公司 Geomembrane and pool surrounding drainage gallery circular gap connecting impervious structure
CN104846791A (en) * 2015-05-27 2015-08-19 中国电建集团华东勘测设计研究院有限公司 Construction method of concrete connecting slabs of broken-line face rockfill dam
CN104863096A (en) * 2015-05-27 2015-08-26 中国电建集团华东勘测设计研究院有限公司 Overlay construction method for repairing aged asphalt concrete seepage-prevention face plate
CN205444110U (en) * 2016-01-07 2016-08-10 中国电建集团华东勘测设计研究院有限公司 Repair structure that concrete panel meteorism was destroyed

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WO2010112621A1 (en) * 2009-03-30 2010-10-07 Alberto Gonzalo Carracedo Method for sealing waterways and repairing joints and cracks in dams and the foundation rock without the need to discharge the reservoir and without interruption of operation, and for repairing joints and fissures in dams
CN203514261U (en) * 2013-10-25 2014-04-02 中国水电顾问集团中南勘测设计研究院有限公司 Geomembrane and pool surrounding drainage gallery circular gap connecting impervious structure
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106149634A (en) * 2016-08-25 2016-11-23 中国电建集团西北勘测设计研究院有限公司 The SR water sealing structure being connected between connecting plate with cut-pff wall seam and water-stopping method thereof
CN106149634B (en) * 2016-08-25 2019-01-04 中国电建集团西北勘测设计研究院有限公司 The SR water sealing structure and its water-stopping method connected between connecting plate and cut-pff wall seam
CN106836133A (en) * 2017-03-31 2017-06-13 长江勘测规划设计研究有限责任公司 Structure and construction method are repaired in a kind of concrete slab extruding destruction
CN108385614A (en) * 2018-01-25 2018-08-10 浙江水利水电学院 A kind of concrete facing board construction method of anti-floating towing force
CN109056658A (en) * 2018-08-29 2018-12-21 中国电建集团华东勘测设计研究院有限公司 Concrete slab defect repair construction method
CN110409189A (en) * 2019-07-03 2019-11-05 浩珂科技有限公司 A kind of production technology of the reinforced composite earthwork cloth of warp-knit tape net
CN110747721A (en) * 2019-11-28 2020-02-04 新乡市通达公路新科技有限公司 Road crack pouring machine
CN110747721B (en) * 2019-11-28 2021-09-17 新乡市通达公路新科技有限公司 Road crack pouring machine

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