CN114541331A - Copper sheet water stop construction method - Google Patents
Copper sheet water stop construction method Download PDFInfo
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- CN114541331A CN114541331A CN202210110022.8A CN202210110022A CN114541331A CN 114541331 A CN114541331 A CN 114541331A CN 202210110022 A CN202210110022 A CN 202210110022A CN 114541331 A CN114541331 A CN 114541331A
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- concrete
- copper sheet
- epoxy resin
- water
- expansion bolt
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 129
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 71
- 239000010949 copper Substances 0.000 title claims abstract description 71
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 58
- 239000003822 epoxy resin Substances 0.000 claims abstract description 53
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 53
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 4
- 238000011010 flushing procedure Methods 0.000 claims abstract description 3
- 239000004593 Epoxy Substances 0.000 claims description 8
- 238000005056 compaction Methods 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 3
- 231100000053 low toxicity Toxicity 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 231100000252 nontoxic Toxicity 0.000 claims description 3
- 230000003000 nontoxic effect Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005266 casting Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to a copper sheet water stop construction method, which solves the problem of poor water stop effect of a construction method of firstly pouring a concrete inner groove and then filling concrete in the copper sheet water stop construction. Firstly cutting the outline of a water stopping groove by using a cutting machine for firstly pouring concrete, manually holding an electric pick to chisel the firstly poured concrete in the range of the water stopping groove, drilling an expansion bolt hole by using an impact electric drill, manually removing loose concrete particles and blocks on the surface and in the expansion bolt hole after old concrete in a water tank is chiseled, flushing the water stopping groove and the expansion bolt hole by using high-pressure water to clean the concrete base surface and the expansion bolt hole, manually compacting cushion epoxy resin mortar after a concrete interface is dried, then installing a copper sheet for stopping water, knocking the water stopping sheet by using a rubber hammer to enable the water stopping sheet to be tightly attached to the compacted cushion epoxy resin mortar, fixing the water stopping sheet by using a gasket and the expansion bolt after the water stopping sheet is installed, compacting and filling the epoxy resin mortar, and pouring end cap concrete after curing for 7 days in a dry environment.
Description
Technical Field
The invention relates to a construction method for stopping water of a civil engineering plug concrete copper sheet.
Background
In the hydropower station plug concrete construction process, due to the shrinkage effect of newly-poured plug concrete, the interface between the first-poured concrete and the newly-poured plug concrete can be separated to form a leakage channel, the using function of the plug concrete is influenced, and a safety accident is caused in severe cases, so water stopping is required to be arranged between the first-poured concrete and the newly-poured plug, the traditional copper sheet water stopping construction adopts a deeper water stopping groove chiseled in the first-poured concrete, the water stopping groove is rectangular, the width multiplied by the height is 400mm multiplied by 400mm, then a copper sheet water stopping is installed, the copper sheet water stopping is positioned in the middle of the water stopping groove, finally the plug concrete is poured, the concrete in the water stopping groove is not easy to pour compactly, the construction quality of the backfilled concrete of the water stopping groove is seriously influenced, the water stopping of the copper sheet is not easy to fix, and the water stopping is easy to shift when the backfilled concrete is poured, the expected water stopping effect cannot be achieved, water seepage and water leakage situations often occur in engineering practice, the normal function and function of the engineering are affected, and the engineering safety is seriously endangered.
Disclosure of Invention
The invention aims to provide a copper sheet water-stopping construction method with excellent water-stopping and seepage-proofing effects.
The purpose of the invention is realized by the following steps:
the copper sheet water stop construction method comprises the following construction steps that the cross section of the copper sheet water stop is L-shaped and consists of a horizontal plane and a vertical plane:
(1) firstly, casting concrete 6, determining a line in the range of a water stopping groove 8 by marking a water stopping position of a copper sheet, wherein the width of the water stopping groove is 500-600mm, cutting the outline of the water stopping groove 8 along the drawn line by using a cutting machine, firstly casting the concrete 6 in the range of the water stopping groove by manually holding an electric pick, the depth of the water stopping groove is 45-55mm, drilling an expansion bolt hole 9 by using an impact electric drill, wherein the expansion bolt hole 9 extends into the firstly cast concrete by 45-55mm, the distance and the row pitch of the expansion bolt hole 9 are the same as the drilling distance and the row pitch on the horizontal plane of the water stopping 2 of the copper sheet, manually removing loose concrete particles and blocks on the surface of the water stopping groove 8 and in the expansion bolt hole 9, flushing the water stopping groove 8 and the expansion bolt hole 9 by using high-pressure water to clean the concrete basal plane,
(2) Epoxy resin mortar performance index and water-stop body construction, wherein the cushion epoxy resin mortar 1 and the filling epoxy resin mortar 5 adopt low-toxicity or nontoxic stacking type epoxy mortar which is convenient for construction, the once compaction thickness is 30-40 mm, and the mechanical control index is as follows: the 28-day compressive strength is more than or equal to 70 MPa; the tensile strength is more than or equal to 10.0 MPa; the bonding strength of the epoxy mortar and the concrete is more than or equal to 4.0MPa after 28 days, and the linear expansion coefficient is less than 15 multiplied by 10-6/℃，
The interface of concrete 6 and an expansion bolt hole 9 are completely dried by electric blowing, the cushion epoxy resin mortar 1 is manually compacted, the thickness of the cushion epoxy resin mortar 1 is 8-12mm, the stacking type epoxy resin sand is adopted, one-step compaction forming is carried out, then a copper sheet water stop 2 is installed, the copper sheet water stop 2 is knocked by a rubber hammer to enable the copper sheet water stop 2 to be tightly attached to the compacted cushion epoxy resin mortar 1, the copper sheet water stop is fixed by a gasket 3 and an expansion bolt 4 after installation is finished, the expansion bolt 4 is installed in the expansion bolt hole 9 and screwed by a wrench, finally the epoxy resin mortar 5 is compacted and filled, the thickness of the epoxy resin mortar 5 is 40mm, the stacking type epoxy resin mortar is adopted, and one-step compaction forming is carried out.
(3) And pouring the plug concrete. And after 7 days of curing are finished in epoxy resin mortar construction, pouring plug concrete 7, burying the exposed part of the vertical face of the copper sheet water stop 2 into the plug concrete 7, pouring the plug concrete 7 in a layered mode, wherein the layered thickness is 30-50 cm, and after the concrete is placed in a bin, manually holding an inserted vibrator for vibrating, so that the concrete coarse aggregate does not obviously sink any more and begins to spread, and the phenomena of vibration leakage, underoscillation or over-oscillation are avoided. When concrete is poured, the pouring rising speed is controlled not to be more than 1m/h, and the concrete is timely covered and vibrated before the initial setting of the lower-layer concrete.
The depth of the water stopping groove is 50mm, the width of the water stopping groove is 500-600mm, the width of the copper sheet water stopping 2 is 500mm, the length of the water stopping groove is unlimited, double rows of expansion bolt holes 9 are drilled along the length direction, the aperture of the expansion bolt holes 9 is 20mm, the drilling row pitch is 100mm, the drilling pitch is 500mm, the thickness of the copper sheet water stopping 2 is 0.8-1.2mm, the tensile strength is larger than or equal to 205MPa, the elongation is larger than or equal to 25%, the chemical composition and the physical and mechanical properties of the copper sheet water stopping 2 meet GB/T2059, the copper sheet water stopping 2 is bent 90 degrees from the position of two fifths of the width, the horizontal plane of the copper sheet water stopping 2 is two fifths of the width, the two fifths of the width is embedded into the water stopping groove 8 by filling epoxy resin mortar 5, and the exposed part of the vertical face of the copper sheet water stopping 2 is poured into the plug concrete 7.
The invention has the following advantages:
the water stopping body is composed of cushion epoxy resin mortar 1, copper sheet water stopping 2 and filling epoxy resin mortar 5, the copper sheet water stopping 2 is fixed through a gasket 3 and an expansion bolt 4, the cushion epoxy resin mortar 1 and the filling epoxy resin mortar 5 play roles in filling and bonding the copper sheet water stopping 2 and pouring concrete 6 in advance, the cushion epoxy resin mortar 1 and the filling epoxy resin mortar 5 bond the pouring concrete 6 and the copper sheet water stopping 2 into a whole through the characteristics of high bonding strength and small shrinkage rate of the epoxy resin mortar, and the water stopping body composed of the cushion epoxy resin mortar, the water stopping sheet and the filling epoxy resin mortar plays a good water stopping and seepage preventing role, so that the water stopping construction quality of the copper sheet is ensured, and the engineering safety is ensured.
Drawings
FIG. 1 is a top view of a copper sheet water stopping tank.
FIG. 2 is a cross-sectional view of a copper sheet water stop tank.
The specific implementation mode is as follows:
a high-efficiency reliable copper sheet water stop construction method is shown in figures 1-2, a water stop body is composed of cushion layer epoxy resin mortar 1, a copper sheet water stop body 2 and filling epoxy resin mortar 5, the copper sheet water stop body 2 is fixed through a gasket 3 and an expansion bolt 4, the cushion layer epoxy resin mortar 1 and the filling epoxy resin mortar 5 play a role in filling and bonding the copper sheet water stop body 2 and pouring concrete 6 in advance, the cushion layer epoxy resin mortar 1 and the filling epoxy resin mortar 5 bond the pouring concrete 6 and the copper sheet water stop body 2 into a whole through the characteristics of high bonding strength and small shrinkage rate of the epoxy resin mortar, and the water stop body plays a good water stop and seepage prevention role.
The specific implementation mode of the invention is as follows:
water stopping performance index of copper sheet and processing method
The thickness of the copper sheet water stop 2 is 0.8-1.2mm, the tensile strength is more than or equal to 205MPa, the elongation is more than or equal to 25%, and the chemical composition and the physical and mechanical properties of the copper sheet water stop meet GB/T2059.
The width of the copper sheet water stop 2 is 500mm, the copper sheet water stop is bent and formed in a processing plant in advance, the copper sheet water stop is bent and formed at the position with the width of two fifths, the copper sheet water stop is bent and formed at the position with the width of 90 degrees, two rows of holes are drilled in the part, embedded with the epoxy resin mortar, of the copper sheet water stop 2 through electric drills according to requirements, the hole diameter is 20mm, the drilling row spacing is 100mm, and the drilling spacing is 500 mm.
Construction of water stopping groove and expansion bolt hole
The method comprises the steps of firstly marking a line at the water stopping position of a copper sheet to determine the range line of the water stopping groove 8 when pouring concrete 6 firstly, wherein the width of the water stopping groove is 500-600mm, cutting the outline of the water stopping groove 8 along the marked line by using a cutting machine, manually holding the electric pick to chisel the concrete 6 poured firstly in the range of the water stopping groove, controlling the depth of the water stopping groove to be about 50mm, drilling an expansion bolt hole 9 by using an impact electric drill, controlling the expansion bolt hole 9 to go deep into the concrete poured firstly by about 50mm, and controlling the interval and the row pitch of the expansion bolt hole to be the same as the interval and the row pitch of the water stopping 2 of the copper sheet. After the concrete 6 is poured into the water stopping tank and chiseled and the expansion bolt hole 9 is completed, loose concrete particles and blocks on the surface of the water stopping tank 8 and in the expansion bolt hole 9 are manually removed, and the water stopping tank 8 and the expansion bolt hole 9 are washed by high-pressure water to clean the concrete base surface.
Performance index of epoxy resin mortar and construction of water-stop body
The cushion epoxy resin mortar 1 and the filling epoxy resin mortar 5 adopt low-toxicity or nontoxic stacking epoxy mortar which is convenient for construction, the once compaction thickness is about 30-40 mm, and the mechanical control indexes are as follows: the 28-day compressive strength is more than or equal to 70 MPa; the tensile strength is more than or equal to 10.0 MPa; the bonding strength of the epoxy mortar and the concrete is more than or equal to 4.0MPa after 28 days, and the linear expansion coefficient is less than 15 multiplied by 10-6/℃。
And (2) completely drying the concrete interface and the expansion bolt hole 9 by using an electric blower, manually compacting the cushion epoxy resin mortar 1, wherein the thickness of the cushion epoxy resin mortar 1 is 10mm, adopting stacking type epoxy resin sand, compacting and forming at one step, then installing the copper sheet water stop 2, and knocking the copper sheet water stop 2 by using a rubber hammer to enable the copper sheet water stop 2 to be tightly attached to the compacted cushion epoxy resin mortar 1. Adopt packing ring 3 and expansion bolt 4 to fix the copper sheet stagnant water after the installation of copper sheet stagnant water is accomplished, pack expansion bolt 4 into expansion bolt hole 9 in and screw up with the spanner, the epoxy mortar 5 is filled in the compaction at last, and the packing epoxy mortar 5 thickness is 40mm, adopts pile up type epoxy mortar, once compaction shaping.
Fourth bulkhead concrete pouring
And after the epoxy resin mortar construction is finished and the curing is carried out for 7 days, pouring the plug concrete 7, burying the exposed part of the copper sheet water stop 2 into the plug concrete 7, pouring the plug concrete 7 in a layered mode, wherein the layered thickness is 30-50 cm, and after the concrete is placed in a bin, manually holding an inserted vibrator for vibrating, so as to avoid vibration leakage, underoscillation or over-oscillation based on that the concrete coarse aggregate does not obviously sink and begins to spread. When concrete is poured, the pouring rising speed is controlled not to be more than 1m/h, and the concrete is timely covered and vibrated before the initial setting of the lower-layer concrete.
Claims (2)
1. The construction method for sealing water of the copper sheet is characterized in that the section of the copper sheet for sealing water is L-shaped and consists of a horizontal plane and a vertical plane, and the construction steps are as follows:
(1) the method comprises the steps of firstly pouring concrete (6), marking a water stopping position of a copper sheet, determining a range line of a water stopping groove (8), determining the width of the water stopping groove to be 500-600mm, cutting the outline of the water stopping groove along the marked line by using a cutting machine, manually holding an electric pick to chisel the first poured concrete (6) in the range of the water stopping groove, wherein the depth of the water stopping groove is 45-55mm, drilling an expansion bolt hole (9) by using an impact electric drill, wherein the expansion bolt hole extends into the first poured concrete for 45-55mm, the distance and the row pitch of the expansion bolt hole are the same as those of drilling holes on a horizontal plane of a copper sheet water stopping (2), manually removing loose concrete particles and blocks on the surface of the water stopping groove (8) and in the expansion bolt hole (9), and flushing the water stopping groove and the expansion bolt hole by using high-pressure water to clean a concrete base surface,
(2) Epoxy resin mortar performance index and water-stop body construction
The cushion epoxy resin mortar (1) and the filling epoxy resin mortar (5) adopt low-toxicity or nontoxic stacking epoxy mortar, the once compaction thickness is 30-40 mm, and the mechanical control indexes are as follows: the 28-day compressive strength is more than or equal to 70 MPa; the tensile strength is more than or equal to 10.0 MPa; the bonding strength of the epoxy resin mortar and the concrete is more than or equal to 4.0MPa after 28 days, and the linear expansion coefficient is less than 15 multiplied by 10-6/℃，
Completely blowing an interface of firstly poured concrete (6) and an expansion bolt hole by using electric blowing, manually compacting cushion epoxy resin mortar (1), wherein the thickness of the cushion epoxy resin mortar is 8-12mm, adopting stacking type epoxy resin sand, compacting and forming at one time, then installing a copper sheet water stop (2), knocking the copper sheet water stop (2) by using a rubber hammer to enable the copper sheet water stop (2) to be tightly attached to the compacted cushion epoxy resin mortar, fixing the copper sheet water stop by using a gasket (3) and an expansion bolt (4) after the copper sheet water stop is installed, filling the expansion bolt (4) into the expansion bolt hole (9) and screwing by using a spanner, finally compacting and filling the epoxy resin mortar (5), wherein the thickness of the filling epoxy resin mortar (5) is 40mm, adopting stacking type epoxy resin mortar, compacting and forming at one time,
(3) end cap concrete pouring
After epoxy resin mortar construction is finished and curing is carried out for 7 days, pouring plug concrete (7), burying the exposed part of the vertical face of the copper sheet water stop into the plug concrete, pouring the plug concrete in layers, wherein the thickness of each layer is 30-50 cm, after the plug concrete is placed in a bin, manually holding an inserted vibrator for vibrating, and avoiding leakage vibration, undervibration or overtibration by taking the fact that the coarse aggregate of the plug concrete does not obviously sink and begins to spread, wherein when the plug concrete is poured, the pouring rising speed is controlled not to be more than 1m/h, and the plug concrete is timely covered and vibrated before the initial setting of the lower-layer plug concrete.
2. The efficient and reliable copper sheet water stop construction method according to claim 1, characterized in that the depth of the water stop groove (8) is 50mm, the width is 500-600mm, the width of the copper sheet water stop (2) is 500mm, the length is unlimited, double rows of expansion bolt holes (9) are drilled along the length direction, the aperture of the expansion bolt holes is 20mm, the row spacing of drilling holes is 100mm, the spacing of drilling holes is 500mm, the thickness of the copper sheet water stop is 0.8-1.2mm, the tensile strength is not less than 205MPa, the elongation is not less than 25%, the chemical components and the physical mechanical properties of the copper sheet water stop meet GB/T2059, the copper sheet water stop is bent from the position with two fifths of width, the horizontal plane of the copper sheet water stop is two fifths of width, epoxy resin mortar (5) is filled to embed the two fifths of width into the water stop groove 8, and the vertical exposed surface part of the copper sheet water stop is poured into concrete (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210110022.8A CN114541331A (en) | 2022-01-29 | 2022-01-29 | Copper sheet water stop construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210110022.8A CN114541331A (en) | 2022-01-29 | 2022-01-29 | Copper sheet water stop construction method |
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| Publication Number | Publication Date |
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| CN114541331A true CN114541331A (en) | 2022-05-27 |
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| CN202210110022.8A Pending CN114541331A (en) | 2022-01-29 | 2022-01-29 | Copper sheet water stop construction method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020043537A (en) * | 2002-05-21 | 2002-06-10 | 라영주 | the processing way and its device for an expansion joint of concrete construction which is required to the water stop function |
| CN204385775U (en) * | 2014-12-23 | 2015-06-10 | 江苏省水利建设工程有限公司 | Underground waterproof engineering water-stopping structure |
| CN105951680A (en) * | 2016-06-17 | 2016-09-21 | 中水北方勘测设计研究有限责任公司 | Replaceable surface layer combined sealing structure for concrete structural joint |
| CN110080181A (en) * | 2019-05-30 | 2019-08-02 | 长江勘测规划设计研究有限责任公司 | Hydraulic tunnel only starches structure and its method for arranging |
| CN111411610A (en) * | 2020-04-23 | 2020-07-14 | 中国三峡建设管理有限公司 | Structure and method for fixing copper water seal between new and old concrete |
| CN111472323A (en) * | 2020-04-30 | 2020-07-31 | 中电建十一局工程有限公司 | Dam face and gate pier wall concrete split joint treatment method |
| CN211285496U (en) * | 2019-12-11 | 2020-08-18 | 河南省水利勘测设计研究有限公司 | Water stopping structure at joint between water inlet pool and main canal box culvert of matched engineering |
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-
2022
- 2022-01-29 CN CN202210110022.8A patent/CN114541331A/en active Pending
Patent Citations (8)
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| KR20020043537A (en) * | 2002-05-21 | 2002-06-10 | 라영주 | the processing way and its device for an expansion joint of concrete construction which is required to the water stop function |
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| CN105951680A (en) * | 2016-06-17 | 2016-09-21 | 中水北方勘测设计研究有限责任公司 | Replaceable surface layer combined sealing structure for concrete structural joint |
| CN110080181A (en) * | 2019-05-30 | 2019-08-02 | 长江勘测规划设计研究有限责任公司 | Hydraulic tunnel only starches structure and its method for arranging |
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| CN111411610A (en) * | 2020-04-23 | 2020-07-14 | 中国三峡建设管理有限公司 | Structure and method for fixing copper water seal between new and old concrete |
| CN111472323A (en) * | 2020-04-30 | 2020-07-31 | 中电建十一局工程有限公司 | Dam face and gate pier wall concrete split joint treatment method |
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