CN111733820A - Reverse construction method waterproof grouting hole device and construction method - Google Patents
Reverse construction method waterproof grouting hole device and construction method Download PDFInfo
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- CN111733820A CN111733820A CN202010572058.9A CN202010572058A CN111733820A CN 111733820 A CN111733820 A CN 111733820A CN 202010572058 A CN202010572058 A CN 202010572058A CN 111733820 A CN111733820 A CN 111733820A
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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
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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Abstract
The invention provides a reverse construction method waterproof grouting hole device and a construction method, belongs to the technical field of building construction, and aims to solve the problems that an existing grouting pipe waterproof structure is easy to age and crack and internal water blocking construction is difficult. The grouting device comprises a grouting pipe matched with a grouting hole, wherein a groove is formed in the outer side of the grouting pipe and is spirally arranged; a grouting pipe cover plate is arranged above the grouting pipe in a matching way, and the outer wall of the grouting pipe is provided with an elevation control line. The construction method comprises the steps of firstly pouring a top plate and concrete of a vertical member which is hung below the top plate; embedding a plurality of grouting pipes in the top plate area around the rear built vertical component; then pouring downwards through a channel of the grouting pipe and then building a vertical component; then removing the grouting pipe and plugging the hole; and finally constructing a grouting pipe cover plate. Increase water route through the spiral groove at the concrete outer wall in order to reach the stagnant water purpose, the grout pipe can be retrieved moreover, avoids later stage metal corrosion or chisels the construction inconvenience that brings.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a waterproof grouting hole device and a construction method by a reverse construction method.
Background
In the existing foundation pit reverse construction method, when a top plate is constructed, a grouting pipe is reserved in a top plate area around a vertical component behind the lower part of the top plate; secondly, when a concrete structure below the concrete structure is poured, concrete is poured into the grouting pipe through the flexible pump pipe, a dustpan opening is arranged below the grouting pipe, and then the concrete is guided into the post-pouring vertical component through the dustpan opening to finish pouring.
The prefabricated thin-wall steel pipe or plastic pipe is commonly adopted for the reserved grouting pipe, and the embedded sleeve has the following defects:
firstly, the plastic pipe cannot be provided with water-blocking separation or a water-blocking path is increased; the water-blocking measures are difficult to increase in the steel pipe, so that the waterproof performance is poor;
secondly, the plastic pipe is aged and cracked after being placed in concrete for a long time, so that chiseling is needed before grouting and plugging; the risk of corrosion and water leakage can be generated when the steel pipe is pre-buried;
thirdly, the grouting pipes cannot be recycled.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information is prior art that is known to a person skilled in the art.
Disclosure of Invention
The invention mainly aims to provide a reverse construction method waterproof grouting hole device and a construction method thereof. Meanwhile, the elevation control line is arranged on the grouting pipe, so that the elevation control of the board surface can be considered.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a reverse construction method waterproof grouting hole device comprises a grouting pipe matched with a grouting hole, wherein a groove is formed in the outer side of the grouting pipe and is spirally formed; the supporting grout pipe apron that is equipped with in grout pipe top, the grout pipe outer wall is equipped with the elevation control line.
Compared with the prior art, the invention has the beneficial technical effects that:
the reverse construction method waterproof grouting hole device provided by the invention is mainly characterized in that the spiral grooves are arranged on the outer sides of the grouting embedded pipes, the water passing paths are added on the outer walls of concrete through the spiral grooves to achieve the purpose of water stopping, and the concrete is screwed out through rotation after the concrete is poured, so that the purpose of recovery is achieved, the construction inconvenience caused by later-stage metal corrosion or chiseling is avoided, meanwhile, the waste is reduced, and the problem of water leakage hidden danger after the grouting pipes are reserved in a reverse construction method top plate area and are blocked in the later stage is solved. Meanwhile, the elevation control line is arranged on the grouting pipe, so that the elevation control of the board surface can be considered.
Furthermore, in order to obtain convenient materials and save cost, the grouting pipe is made of a steel plate with the thickness of 3mm, an inclined groove is rolled, and then a straight seam is rolled and welded.
Further, for construction convenience, the grouting pipe is of a cylindrical structure, and the size of the groove is 25mm × 25 mm.
Furthermore, according to the size of the vertical component which is built firstly, the grouting pipes are uniformly pre-embedded in the peripheral area of the top plate above the post-built vertical component and used for pouring the post-built vertical component.
The invention also provides a construction method of the waterproof grouting hole by the reverse construction method, which comprises the following steps:
step S1, a top plate is poured, the first-built vertical component hung below the top plate is used for connecting the second-built vertical component, and a plurality of grouting pipes are embedded in the top plate area around the second-built vertical component before concrete is poured;
step S2, after the concrete to be poured is initially set, the grouting pipe is rotated anticlockwise by a certain angle by using the opening at the top of the grouting pipe, so that the concrete is initially separated from the grouting pipe;
step S3, a hose or a vibrating rod of the concrete mixer truck is extended into a dustpan opening below the floor through a grouting pipe to carry out concrete transmission and pouring, and pouring of the post-construction vertical component is completed;
step S4, rotating and pulling out the grouting pipe to form a top plate hole;
step S5, plugging the top plate hole with micro-expansion fine aggregate concrete, and vibrating tightly to connect the groove joint surfaces of the new concrete and the old concrete tightly;
and step S6, opening a notch near the top plate hole according to the shape of the outer ring of the grouting pipe cover plate by using a cutting machine, cleaning dust and garbage around the notch, clamping the wedge opening of the grouting pipe cover plate into the notch, and sealing by using waterproof caulking glue, thereby completing the construction of a waterproof grouting hole.
Further, the height of the prefabricated vertical member hung under the middle slab in S1 is 300mm below the bottom of the beam in the area.
Further, in order to facilitate the removal of the grout pipe, the certain angle in step S2 is 5 °.
Further, in order to facilitate the construction of the grouting pipe cover plate, the depth of the notch in the step S6 is 15mm, and the width is 2 mm.
Furthermore, the grouting pipe cover plate is of an equilateral rectangular structure, so that construction is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of a reverse-construction waterproof grouting hole device according to an embodiment of the invention;
FIG. 2 is a schematic view of a cover plate of a grouting pipe in a top-down waterproof grouting hole device according to an embodiment of the present invention;
FIG. 3 is a schematic view illustrating a step S1 of a waterproof grout hole construction method according to another embodiment of the present invention;
fig. 4 is a schematic view illustrating step S6 in the waterproof grout hole construction method according to another embodiment of the present invention.
In the figure:
1-a top plate; 2-grouting pipe; 3, building a vertical component; 4-post-construction of vertical members; 5-grouting pipe cover plate; 6-waterproof caulking glue; 7-dustpan opening.
Detailed Description
The waterproof grouting hole device and the construction method of the reverse construction method provided by the invention are further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
The invention principle is as follows: in the foundation ditch reverse construction method construction at present, when the vertical structure concrete of roof below was under construction, generally construct through the grout pipe of reserving on the roof in advance, reserve the grout pipe and mainly adopt prefabricated thin wall steel pipe or plastic tubing, however current grout pipe waterproof construction easily ages the brittle fracture, and inside waterproof construction difficulty. Therefore, the grouting pipe capable of being pulled out at the later stage is arranged, the spiral groove is formed in the outer portion of the grouting pipe, a water passing path is added on the outer wall of concrete through the spiral groove to achieve the purpose of water stopping, the grouting pipe is screwed out through rotation after the concrete is poured, the purpose of recycling is achieved, construction inconvenience caused by later-stage metal corrosion or chiseling is avoided, and the grouting pipe is green and environment-friendly.
Example one
The structural components of the top-down waterproof grouting hole device of the invention are described in detail below with reference to fig. 1 to 4.
Referring to fig. 1 to 4, a top-down waterproof grouting hole device includes a grouting pipe 2 configured to match with a grouting hole, a groove is provided on an outer side of the grouting pipe 2, and the groove is spirally provided; a grouting pipe cover plate 5 is arranged above the grouting pipe 2 in a matching way, and the outer wall of the grouting pipe 2 is provided with an elevation control line.
Particularly, the waterproof grouting hole device of the reverse construction method provided by the embodiment is mainly characterized in that the spiral grooves are arranged on the outer sides of the grouting pipes 2, water passing paths are added on the outer walls of concrete through the spiral grooves to achieve the purpose of water stopping, and the grouting pipes 2 are screwed out through rotation after the concrete is poured, so that the purpose of recycling is achieved, construction inconvenience caused by later metal corrosion or chiseling is avoided, and meanwhile waste is reduced; thereby the hidden danger problem of leaking after the grout pipe later stage shutoff is reserved in reverse construction method roof district has been solved. Meanwhile, the elevation control line is arranged on the grouting pipe, and the elevation control of the top plate surface can be considered. The vertical structure of roof 1 below is including building vertical component 3 earlier and building vertical component 4 after, and wherein, the passageway that vertical component 4 provided through grout pipe 2 was built after.
In this embodiment, more preferably, in order to obtain materials conveniently and save cost, the grouting pipe 2 is made by rolling and welding straight seams after rolling an inclined groove on a steel plate with a thickness of 3 mm.
In the present embodiment, it is more preferable that the grout pipe 2 has a cylindrical structure and a groove size of 25mm × 25mm for construction convenience.
In the embodiment, it is more preferable that the grouting pipes 2 are uniformly pre-buried in the peripheral area of the top plate above the post-construction vertical member according to the size of the pre-construction vertical member 3.
With continuing reference to fig. 1 to fig. 4, an embodiment of the present invention further provides a method for constructing a waterproof grouting hole by a reverse method, where the method includes:
step S1, a top plate 1 is poured, a first-built vertical component 3 hung below the top plate is used for being connected with a second-built vertical component 4, and a plurality of grouting pipes 2 are pre-buried in the top plate area around the second-built vertical component 4 before concrete is poured;
step S2, after the concrete to be poured is initially set, the grouting pipe 2 is rotated counterclockwise by a certain angle by using the opening at the top of the grouting pipe 2, and the certain angle is about 5 degrees for convenient operation, so that the concrete and the grouting pipe 2 are initially separated;
step S3, a hose or a vibrating rod of the concrete mixer truck is extended into a dustpan opening 7 below a floor slab through a grouting pipe to carry out concrete transmission and pouring, and pouring of the vertical component 4 is built after the bottom of the slab is finished;
step S4, rotating and pulling out the grouting pipe 2 to form a top plate hole;
step S5, plugging the top plate hole with micro-expansion fine aggregate concrete, and vibrating to compact the concrete so that the joint surfaces of the grooves of the new concrete and the old concrete are connected tightly;
and step S6, a notch is formed near the top plate hole by using a cutting machine according to the shape of the outer ring of the grouting pipe cover plate, after dust and garbage around the notch are cleaned, the wedge opening of the grouting pipe cover plate 5 is clamped into the notch, and the waterproof caulking compound 6 is used for sealing treatment, so that the construction of the waterproof grouting hole is completed.
The above description is only illustrative of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. Any changes and modifications of the above disclosure by those skilled in the art are within the scope of the appended claims.
Claims (9)
1. The reverse construction method waterproof grouting hole device is characterized by comprising a grouting pipe matched with the grouting hole, wherein a groove is formed in the outer side of the grouting pipe and is spirally formed; the supporting grout pipe apron that is equipped with in grout pipe top, the grout pipe outer wall is equipped with the elevation control line.
2. The reverse-construction waterproof grouting hole device of claim 1, wherein the grouting pipe is made of 3mm thick steel plate rolled with inclined grooves by rolling and welding straight seams.
3. The reverse waterproof grouting hole device of claim 2, wherein the grouting pipe is a cylindrical structure, and the groove on the outer wall of the grouting pipe is 25mm by 25 mm.
4. The top-down construction method waterproof grouting hole device according to claim 2, wherein the grouting pipes are uniformly pre-buried in the peripheral area of the top plate above the rear-built vertical component.
5. A reverse construction method waterproof grouting hole construction method, characterized in that the reverse construction method waterproof grouting hole device of any one of claims 1 to 4 is used, and the construction method comprises the following steps:
step S1, a top plate is poured, the first-built vertical component hung below the top plate is used for connecting the second-built vertical component, and a plurality of grouting pipes are embedded in the top plate area around the second-built vertical component before concrete is poured;
step S2, after the concrete to be poured is initially set, the grouting pipe is rotated anticlockwise by a certain angle by using the opening at the top of the grouting pipe, so that the concrete is initially separated from the grouting pipe;
step S3, a hose or a vibrating rod of the concrete mixer truck is extended into a dustpan opening below the floor through a grouting pipe to carry out concrete transmission and pouring, and pouring of the post-construction vertical component is completed;
step S4, rotating and pulling out the grouting pipe to form a top plate hole;
step S5, plugging the top plate hole with micro-expansion fine aggregate concrete, and vibrating to compact the top plate hole so that the joint surfaces of the grooves of the new concrete and the old concrete are connected tightly;
and step S6, opening a notch near the top plate hole according to the shape of the outer ring of the grouting pipe cover plate by using a cutting machine, cleaning dust and garbage around the notch, clamping the wedge opening of the grouting pipe cover plate into the notch, and sealing by using waterproof caulking glue, thereby completing the sealing construction of the waterproof grouting hole.
6. The construction method according to claim 5, wherein the height of the prefabricated vertical member hung under the slab in the step S1 is 300mm below the bottom of the slab in the area.
7. The construction method according to claim 5, wherein the certain angle in the step S2 is 5 °.
8. The construction method according to claim 5, wherein the depth of the groove in step S6 is 15mm and the width is 2 mm.
9. The construction method according to claim 5, wherein the grout tube cover plate has an equilateral rectangular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010572058.9A CN111733820A (en) | 2020-06-22 | 2020-06-22 | Reverse construction method waterproof grouting hole device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010572058.9A CN111733820A (en) | 2020-06-22 | 2020-06-22 | Reverse construction method waterproof grouting hole device and construction method |
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| CN111733820A true CN111733820A (en) | 2020-10-02 |
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| CN202010572058.9A Pending CN111733820A (en) | 2020-06-22 | 2020-06-22 | Reverse construction method waterproof grouting hole device and construction method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839850A (en) * | 2016-03-25 | 2016-08-10 | 温州建设集团有限公司 | Basement reverse-construction scape post-casting pre-stressed construction method |
| CN206458479U (en) * | 2017-01-16 | 2017-09-01 | 中国铁道科学研究院铁道建筑研究所 | A kind of Grouting Pipe |
| CN110863598A (en) * | 2019-11-15 | 2020-03-06 | 中国十七冶集团有限公司 | Construction method for cast-in-situ floor slab construction hole |
-
2020
- 2020-06-22 CN CN202010572058.9A patent/CN111733820A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839850A (en) * | 2016-03-25 | 2016-08-10 | 温州建设集团有限公司 | Basement reverse-construction scape post-casting pre-stressed construction method |
| CN206458479U (en) * | 2017-01-16 | 2017-09-01 | 中国铁道科学研究院铁道建筑研究所 | A kind of Grouting Pipe |
| CN110863598A (en) * | 2019-11-15 | 2020-03-06 | 中国十七冶集团有限公司 | Construction method for cast-in-situ floor slab construction hole |
Non-Patent Citations (2)
| Title |
|---|
| 宋国秉等: "《火力发电厂土建施工》", 31 August 1991, 水利电力出版社 * |
| 江正荣: "《地基与基础施工手册》", 31 July 1997, 中国建筑工业出版社 * |
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Application publication date: 20201002 |
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