CN112813926A - Hydraulic engineering seam-crossing rear-mounted built-in water stop assembly structure and construction method - Google Patents
Hydraulic engineering seam-crossing rear-mounted built-in water stop assembly structure and construction method Download PDFInfo
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- CN112813926A CN112813926A CN202110014476.0A CN202110014476A CN112813926A CN 112813926 A CN112813926 A CN 112813926A CN 202110014476 A CN202110014476 A CN 202110014476A CN 112813926 A CN112813926 A CN 112813926A
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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
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- 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
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Abstract
The invention discloses a construction method of a built-in water stop assembly structure after spanning a seam in hydraulic engineering, which comprises the following steps: the method comprises the following steps: grouting holes are formed in two sides of the construction joint; step two: erecting a rope saw according to the position of the grouting hole; step three: a cutting groove is formed at the construction joint by using a rope saw; step four: removing the rope saw and cleaning the cross section; step five: installing the water stop in the section and fixing the water stop; step six: backfilling and pouring; step seven: and (5) waterproof treatment of the construction joint. A built-in water stop assembly structure for hydraulic engineering after crossing a joint comprises grouting holes, a cutting groove and a water stop belt, wherein the two grouting holes are symmetrically arranged on two sides of a construction joint; the cutting groove is vertical to the construction joint and is provided with two ends which are respectively connected with a grouting hole; the grouting holes and the cutting grooves form a dumbbell-shaped section; the waterstop is arranged in the section. The invention provides a postposition waterstop structure and a construction scheme, which effectively solve the problem of seam body waterstop which cannot be processed in the construction stage, and the construction scheme is simple and the construction means is easy to realize.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering, in particular to a built-in water stop assembly structure after cross-joint and post-installation in hydraulic engineering and a construction method.
Background
The water conservancy project relates to a plurality of civil structures, and all the civil structures are required to have a certain seepage-proofing function, the seepage-proofing structure body is often divided into a plurality of small blocks due to construction reasons, structural reasons, geological reasons and other external forces in the construction process, construction joints, deformation joints, structural joints or cracks can be formed among the small blocks, seepage channels can be formed among the small blocks, and the structural body with the seepage-proofing function loses the seepage-proofing function. In order to block the leakage path of construction joints, deformation joints, structural joints or cracks, these joints must be treated by applying water stops or other water stopping materials to the joint surfaces.
The problem that water stops can be added on the seam surface in the construction stage can be solved, however, some special seams or later seams formed by external force are not water stopping operation in the construction stage, such as construction seams among longitudinal reinforcements; meanwhile, some seams are formed by external force at the later stage and need to be prevented from seepage and leaking stoppage in time; and some seams are needed to be renewed after the original waterstop is damaged.
Disclosure of Invention
The invention aims to solve the technical problems that water stopping on a water stopping operation seam surface cannot be carried out in a construction stage, and the accurate and rapid construction of a rear water stopping belt is realized, and aims to provide a cross-seam rear-mounted water stopping assembly structure and a construction method for hydraulic engineering, which can effectively solve the problems.
The invention is realized by the following technical scheme:
a built-in water stop assembly structure for hydraulic engineering after crossing a joint comprises grouting holes, a cutting groove and a water stop belt, wherein the two grouting holes are formed in two sides of a construction joint and are symmetrical about the construction joint;
the cutting groove is perpendicular to the construction joint and is provided with two ends respectively connected with a grouting hole;
after the two grouting holes are connected with the cutting groove, a section is formed in the concrete structure;
the waterstop is arranged in the section.
The further technical scheme is as follows:
the aperture of the grouting hole is 120-150 mm. The diameter of the grouting hole is not too large, and the stability and safety of the concrete structure are affected by the too large diameter of the grouting hole, so that the concrete structure is discontinuous and even the structure is damaged.
Further: the depth of the cutting groove is greater than the depth of the construction joint. The installation of the waterstop is ensured to be positioned below the construction joint, and the waterstop effect is ensured.
Further: corners are arranged at two ends of the water stop belt, and the middle section of the water stop belt is wavy; the size of the water stop is matched with the size of the section, corners of two ends of the water stop are arranged in the grouting holes, and the wavy structure of the middle section of the water stop is arranged in the cutting groove. Corners are designed at the two ends of the water stop belt to increase the gripping force and the seepage diameter, and the corners at the two ends can ensure that the water stop belt cannot transversely move in the cutting groove so as to influence the water stop effect; the middle section has certain deformation space for wavy fold, can effectively offset the tensile stress when the structure warp, guarantees that the civil engineering structure can not destroyed and take place the seepage under limited deformation lower seam face.
Further: the water stop is made of red copper. The water stop band made of red copper can be equivalently replaced by the water stop band made of other materials or the water stop material.
A construction method for a built-in water stop assembly structure after cross-joint and post-installation of hydraulic engineering comprises the following specific steps:
the method comprises the following steps: arranging grouting holes at two sides of the construction joint, wherein the two grouting holes are symmetrically distributed about the construction joint and the depth of the grouting holes is required to be larger than that of the construction joint;
step two: erecting a rope saw according to the position of the grouting hole, wherein the rope saw is erected to meet the requirement that the rope saw can send a cutting part to the lower part of a construction joint through the grouting hole, and the obtained cutting groove is ensured to be positioned below the construction joint, so that the rope saw selects a concrete cutting rope saw with the bead diameter of 8-11 mm to ensure the construction effect of the cutting groove;
step three: a rope saw is used for forming a cutting groove at the construction joint, the width of the formed cutting groove is larger than that of the waterstop so as to facilitate the installation operation of the waterstop at the later period, and the depth of the cutting groove is larger than that of the construction joint so as to ensure the water stopping effect of the scheme;
step four: after the grooving construction is finished, the rope saw is detached and the section is cleaned, so that the stability of the later-stage waterstop installation is ensured, and the influence of concrete powder slurry on the subsequent backfilling grouting effect is avoided
Step five: the water stop is arranged in the section, the water stop is fixed, corner structures at two ends of the water stop are positioned in the grouting holes when the water stop is arranged, the extension direction of a wave-shaped structure at the middle section of the water stop is matched with the deformation condition of the concrete structure, the wave-shaped structure can adapt to slight deformation of the concrete structure, and the condition that the water stop is damaged due to deformation of the structure is reduced;
step six: backfilling and pouring, backfilling the grouting holes and the cutting grooves by using micro-expansion cement slurry, and ensuring that the compressive strength of the concrete structure is between 5 and 15MPa by using Portland cement or common Portland cement with the strength grade of 42.5 according to the water conservancy construction requirements, wherein 0.5 to 1.5 percent of water reducing agent is also required to be added into the cement slurry, and the doping amount of the micro-expansion agent is 6 to 10 percent.
Step seven: and the waterproof treatment of the construction joint reduces the leakage from the construction joint and enhances the anti-leakage effect.
The invention provides a postposition waterstop structure and a construction scheme, which effectively solve the problem of seam body waterstop which cannot be processed in the construction stage, and the construction scheme is simple and the construction means is easy to realize.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the built-in water stop assembly structure and the construction method for the hydraulic engineering after crossing the seam have the advantages that the structure is simple, the construction is convenient, and the problem of the postposition of a water stop belt can be effectively solved;
2. according to the built-in water stop assembly structure after crack crossing and the construction method of the built-in water stop assembly structure, corner structures at two ends of the water stop can increase and decrease the wrapping force and the seepage diameter, and the wavy folds at the middle section can adapt to slight deformation of a civil structure, so that the water stop cannot fail due to damage.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the water stop of the present invention;
FIG. 3 is a schematic view of the construction of grooving according to the present invention.
Reference numbers and corresponding part names in the drawings:
1-grouting hole, 2-grooving, 3-waterstop, 4-rope saw, 5-construction joint and 6-concrete structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1 or fig. 3, the invention relates to a hydraulic engineering joint-crossing rear-mounted built-in water stop assembly structure and a construction method, wherein the construction scheme and the working principle are as follows: before construction, the depth of a construction joint 5 is determined, and then two grouting holes 1 with the depth larger than that of the construction joint 5 are symmetrically formed in two sides of the construction joint 5; then a rope saw is erected above the grouting hole 1, the cutting part of the erected rope saw 4 can reach the lower part of a construction joint 5 through the grouting hole 1, and the rope saw 4 is a concrete cutting rope saw with the bead string diameter of 8-11 mm; after the rope saw 4 is erected, construction of a cutting groove 2 is carried out, the cutting groove 2 with the width larger than that of the water stop belt 3 is formed, and the depth of the cutting groove 2 is larger than that of a construction joint 5; after the construction of the cutting groove 2 is finished, impurities such as concrete blocks, powder and the like generated by cutting in the cutting groove 2 and the grouting hole 1 need to be cleaned so as to ensure that the later construction can be smoothly carried out and achieve the purposes of seepage prevention and water stop; after the cutting groove 2 and the grouting hole 1 are cleaned up, the water stop 3 is installed, the corner structures of two ends of the water stop 3 are positioned in the grouting hole 1 when the water stop 3 is installed, and the extension direction of the wavy structure at the middle section of the water stop 3 is matched with the deformation condition of the concrete structure 6; after the water stop 3 is installed and fixed, grouting begins to be backfilled, and micro-expansion cement slurry formed by combining cement with strength grade of C30-C50, an expanding agent and other materials is adopted during backfilling, so that the water stop is further fixed while the grouting hole 1 and the cutting groove 2 are backfilled; after the backfill slurry is solidified, performing waterproof treatment on the construction joint 5 by using a waterproof material; if the construction of the hydraulic engineering cross-joint post-positioned water-stopping assembly structure is completed, the seepage-proofing water-stopping treatment of the construction joint 5 can be realized.
Example 2:
as shown in fig. 1-3, the built-in water stop assembly structure for hydraulic engineering after crossing a joint comprises grouting holes 1, a cutting groove 2 and a water stop belt 3, wherein the two grouting holes 1 are arranged on two sides of a construction joint 5 and are symmetrical relative to the construction joint 5;
the cutting groove 2 is perpendicular to the construction joint 5, two ends of the cutting groove are respectively connected with a grouting hole 1, and the depth of the grouting hole 1 is greater than that of the construction joint 5;
after the two grouting holes 1 and the cutting groove 2 are connected, a section is formed in the concrete structure 6, and the section is positioned below the construction joint 5;
the water stop 3 is arranged in the section. The aperture of the grouting hole 1 is 120-150 mm.
The cutting depth of the cutting groove 2 is larger than the depth of the construction joint 5.
Corners are arranged at two ends of the water stop 3, and the middle section of the water stop is wavy; the size of 3 waterstops and the size looks adaptation of cross section, the corner of 3 both ends heads of waterstop is located slip casting hole 1 after the installation, and the wavy structure in 3 waterstops middle sections is located grooving 2. The water stop 3 is made of red copper.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A built-in water stop assembly structure for hydraulic engineering after span joint installation is characterized by comprising grouting holes (1), a cutting groove (2) and a water stop belt (3), wherein the two grouting holes (1) are formed in two sides of a construction joint (5) and are symmetrical relative to the construction joint (5);
the cutting groove (2) is perpendicular to the construction joint (5) and is provided with a grouting hole (1) at each end;
after the two grouting holes (1) are connected with the cutting groove (2), a section is formed in the concrete structure (6);
the water stop (3) is arranged in the section.
2. The hydraulic engineering built-in water stop assembling structure after spanning seam according to claim 1, characterized in that the aperture of the grouting hole (1) is 120-150 mm.
3. The hydraulic engineering cross-joint rear-installation built-in water stop assembling structure as claimed in claim 1, wherein the depth of the cutting groove (2) is greater than the depth of the construction joint (5).
4. The hydraulic engineering built-in water stop assembly structure after spanning the seam according to claim 1, characterized in that two ends of the water stop (3) are provided with corners and the middle section is wavy;
the size of waterstop (3) and the size of cross section are adapted, the corners of two ends of waterstop (3) are installed and then located in grouting holes (1), and the wavy structure of the middle section of waterstop (3) is located in cutting grooves (2).
5. The hydraulic engineering cross-seam rear-installation built-in water stop assembly structure as claimed in claim 3, wherein the water stop (3) is made of red copper.
6. The construction method of the built-in water stop assembling structure after the water conservancy project is subjected to seam crossing and then is installed, according to any one of claims 1 to 4, is characterized by comprising the following specific steps:
the method comprises the following steps: grouting holes (1) are formed in two sides of the construction joint (5);
step two: erecting a rope saw (4) according to the position of the grouting hole (1);
step three: a rope saw (4) is used for opening a cutting groove (2) at the construction joint (5);
step four: after the grooving (2) is constructed, the rope saw is dismantled and the cross section is cleaned;
step five: installing the water stop (3) in the section and fixing the water stop (3);
step six: backfilling and pouring, namely backfilling the formed grouting holes (1) and the formed cutting grooves (2);
step seven: and (5) performing waterproof treatment on the construction joint.
7. The construction method of the water conservancy project water stop assembling structure installed in the post-span installation mode is characterized in that the erection position of the rope saw (4) is located above the grouting hole (1), the rope saw (4) can move downwards along the grouting hole (1) in the construction process, and the depth of the cutting groove (2) is guaranteed to meet the construction requirements.
8. The construction method of the hydraulic engineering water conservancy project post-installation built-in water stop assembling structure after crossing the seam is characterized in that the material used for backfilling pouring is micro-expansion cement slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110014476.0A CN112813926B (en) | 2021-01-06 | 2021-01-06 | Hydraulic engineering seam-crossing rear-mounted built-in water stop assembly structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110014476.0A CN112813926B (en) | 2021-01-06 | 2021-01-06 | Hydraulic engineering seam-crossing rear-mounted built-in water stop assembly structure and construction method |
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| Publication Number | Publication Date |
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| CN112813926A true CN112813926A (en) | 2021-05-18 |
| CN112813926B CN112813926B (en) | 2021-12-31 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203440923U (en) * | 2013-06-19 | 2014-02-19 | 中国葛洲坝集团国际工程有限公司 | Blocking structure of cut groove in surface of concrete crack |
| CN106638709A (en) * | 2016-12-29 | 2017-05-10 | 上海建工二建集团有限公司 | Anti-seepage method for cast-in-place concrete wall construction joint based on water swelling sealant |
| CN111364629A (en) * | 2020-03-20 | 2020-07-03 | 中交第三航务工程局有限公司 | Water stopping process for construction joint |
| CN111441311A (en) * | 2020-04-17 | 2020-07-24 | 中国水利水电科学研究院 | Underwater repair method for leakage of old dam structure seam |
| CN111593768A (en) * | 2020-03-30 | 2020-08-28 | 中国一冶集团有限公司 | Rubber water stop for pipe gallery deformation joint and construction method thereof |
-
2021
- 2021-01-06 CN CN202110014476.0A patent/CN112813926B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203440923U (en) * | 2013-06-19 | 2014-02-19 | 中国葛洲坝集团国际工程有限公司 | Blocking structure of cut groove in surface of concrete crack |
| CN106638709A (en) * | 2016-12-29 | 2017-05-10 | 上海建工二建集团有限公司 | Anti-seepage method for cast-in-place concrete wall construction joint based on water swelling sealant |
| CN111364629A (en) * | 2020-03-20 | 2020-07-03 | 中交第三航务工程局有限公司 | Water stopping process for construction joint |
| CN111593768A (en) * | 2020-03-30 | 2020-08-28 | 中国一冶集团有限公司 | Rubber water stop for pipe gallery deformation joint and construction method thereof |
| CN111441311A (en) * | 2020-04-17 | 2020-07-24 | 中国水利水电科学研究院 | Underwater repair method for leakage of old dam structure seam |
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| CN112813926B (en) | 2021-12-31 |
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