CN218091363U - Water stop structure for joint of new and old concrete structures - Google Patents
Water stop structure for joint of new and old concrete structures Download PDFInfo
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- CN218091363U CN218091363U CN202222218734.XU CN202222218734U CN218091363U CN 218091363 U CN218091363 U CN 218091363U CN 202222218734 U CN202222218734 U CN 202222218734U CN 218091363 U CN218091363 U CN 218091363U
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Abstract
The utility model discloses a stagnant water structure for new, old concrete structure seam department, including mounting groove, stagnant water unit, coupling assembling and seepage control structure layer, the stagnant water unit has first stagnant water portion, second stagnant water portion and third stagnant water portion, and seepage control structure layer has backfill layer, waterproof layer and the sealing layer of laying in proper order. The first water stop part of the utility model is buried in a new concrete structure, the second water stop part is anchored in an old concrete structure through the anchoring part, the third water stop part is clamped in a structural joint, the third water stop part has a certain deformation space, can adapt to the deformation caused by asymmetric settlement of concrete, ensures the water stop effect and the seepage-proofing performance of the structural joint and prolongs the operation time of hydraulic buildings; the seepage-proofing structure layer can not only adjust the flatness of the structure joint, but also ensure the waterproof and seepage-proofing performance of the old concrete structure; the sealing layer is filled in the structural joint, so that the sealing performance and the seepage-proofing performance of the structural joint are ensured.
Description
Technical Field
The utility model belongs to the technical field of the hydraulic engineering technique and specifically relates to a stagnant water structure that is used for new, old concrete structure seam department is related to.
Background
In the hydraulic engineering, with the increase of the operating life of the hydraulic engineering, danger removal and reinforcement are required to be carried out on the hydraulic engineering. When danger is removed and reinforced, the water stop structure of the structure joint of the old concrete layer and the newly poured concrete is a key structure of the hydraulic structure, the water stop structure directly influences the seepage safety of the hydraulic engineering, and the perfect water stop structure can effectively ensure the seepage safety and the service life of the hydraulic structure; if the treatment is not good, the problems of poor water stopping effect, water seepage and the like can occur, and even secondary water stopping is needed. Chinese utility model patent CN213391311U discloses a stagnant water structure between new and old concrete structure seam, and this stagnant water structure is the construction rubber waterstop in the structure seam, presss from both sides between the rubber waterstop and establishes the stagnant water copper sheet that is L shape structure, pours the section of bending of stagnant water copper sheet in new concrete structure. By adopting the water stopping structure, the water stopping copper sheet is vertically arranged in the upper structure seam, one end of the water stopping copper sheet is poured in concrete, the water stopping copper sheet is difficult to adapt to deformation caused by uneven settlement of concrete structures on two sides of the structure seam, the running time is short, and multiple times of reinforcement are needed.
Disclosure of Invention
In view of this, the utility model provides a stagnant water structure for new and old concrete structure seam department can adapt to new and old concrete structure and warp and the seepage that arouses, and the stagnant water is effectual, has fine prevention of seepage performance, and then has prolonged hydraulic structure's safe operation cycle.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a water stopping structure for the joint of a new concrete structure and an old concrete structure, which is arranged at the joint of the new concrete structure and the old concrete structure and comprises
The mounting groove is formed in the upper surface of the old concrete structure and communicated with the structure seam;
the water stopping unit is provided with a first water stopping part, a second water stopping part and a third water stopping part, the first water stopping part is buried in a new concrete structure, the second water stopping part is paved at the bottom of the mounting groove, and the third water stopping part is arranged between the first water stopping part and the second water stopping part and is positioned in the structural joint;
the connecting assembly is provided with a plurality of anchoring pieces for fixing the second water stopping part in the mounting groove, and each anchoring piece is vertical to the second water stopping part;
the anti-seepage structure layer is provided with a backfill layer laid in the mounting groove and a waterproof layer laid on the backfill layer, and the thickness of the waterproof layer is more than or equal to 25mm; and
and the sealing layer is filled in the structure seam and used for connecting the waterproof layer and the new concrete structure together in a sealing manner.
In the scheme, the method comprises the following steps: the first water stop part is buried in a new concrete structure, the second water stop part is anchored in an old concrete structure through an anchoring part, the third water stop part is clamped in a structural joint, and the third water stop part has a certain deformation space and can adapt to deformation caused by asymmetric settlement of concrete, so that the water stop effect and the seepage-proofing performance of the structural joint are ensured, and the running time of a hydraulic structure is prolonged;
in addition, an anti-seepage structure layer is poured above the second water stopping part, so that the flatness of the structure joint can be adjusted, and the waterproof and anti-seepage performance of the old concrete structure at the structure joint can be ensured;
and moreover, the sealing layer (adopting sealant, preferably epoxy sealant) is filled in the structural joint, so that the sealing layer realizes the sealing connection between the old concrete structure and the new concrete structure, the sealing effect and the waterproof effect of the structural joint are ensured, and the anti-seepage performance of the structural joint is further improved.
In actual processing, the third water stop part is of a U-shaped structure embedded in a structural seam, and the width of the third water stop part is 15-25 mm; the height of the third water stop part is 35-60 mm. The third water stop part is of a U-shaped structure and has certain height and width, so that the deformation caused by asymmetric settlement can be adapted, and the construction quality and the water stop effect are ensured.
And during actual processing, the first water-stop part and the second water-stop part are both provided with folded edges which vertically extend to the adjacent water side, the height of each folded edge is 20-40 mm, and the directions of the folded edges are opposite to those of the third water-stop part. The first water stopping portion and the second water stopping portion are horizontally arranged, and the edges of the first water stopping portion and the second water stopping portion are provided with vertical folding edges, so that the fixing effect of the water stopping unit is ensured.
During actual processing, the widths of the first water stopping part and the second water stopping part are both larger than 120mm, and the fixing effect of the water stopping unit is further ensured by the widths of the first water stopping part and the second water stopping part.
When actual installation, stagnant water structure still includes seal assembly, seal assembly includes that water tiling is established lower sealing gasket and level on the mounting groove diapire are laid last sealing gasket in the second stagnant water portion. And the lower surface and the upper surface of the second water stopping part are respectively paved with a sealing gasket, and the sealing assembly and the second water stopping part are fixed in the mounting groove by the anchoring part, so that the sealing performance of the second water stopping part is ensured.
When the concrete structure is actually installed, the anchoring pieces are arranged at intervals along the length direction of the installation groove and are expansion bolts anchored in the old concrete structure. More preferably, a fastening steel plate for pressing the sealing assembly is arranged on the expansion bolt in a penetrating mode. By adopting the connection mode, the expansion bolt can be anchored in an old concrete structure, the fastening steel plate increases the stress area of the upper sealing gasket, and the influence on the service life caused by the local concentrated stress of the upper sealing gasket is avoided.
In actual installation, the thickness of the backfill layer is 80-120 mm, and the thickness of the waterproof layer is 25-35 mm. The total height of the backfill layer and the waterproof layer can be controlled within 155mm, the second water stop part can be buried in an old concrete structure, and the water stop performance of the waterproof layer improves the seepage-proofing effect of the upstream face.
Compared with the prior art, the utility model has the advantages of it is following:
the first water stopping part of the utility model is buried in a new concrete structure, the second water stopping part is anchored in an old concrete structure through the anchoring part, the third water stopping part is clamped in a structural joint, the third water stopping part has a certain deformation space and can adapt to the deformation caused by the asymmetric settlement of concrete, the water stopping effect and the anti-seepage performance of the structural joint are ensured, and the operation time of a hydraulic structure is prolonged; the seepage-proofing structure layer can not only adjust the flatness of the structure joint, but also ensure the waterproof and seepage-proofing performance of the old concrete structure; the sealing layer (preferably epoxy sealant) is filled in the structural joint, so that the sealing connection between the old concrete structure and the new concrete structure is realized, and the sealing property and the seepage-proofing property of the structural joint are ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a connection diagram of the water stop structure and the old concrete structure of the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings, which are implemented on the premise of the technical solution of the present invention, and give detailed implementation manners and specific operation procedures, but the scope of the present invention is not limited to the following embodiments.
As shown in figures 1-2, the water stopping structure for the joint of the new and old concrete structures of the present invention is arranged at the joint F of the new concrete structure 4 and the old concrete structure 3, which comprises
The mounting groove 1 is formed in the upper surface of the old concrete structure 3 and communicated with the structure seam F;
the water stopping unit 2 is provided with a first water stopping part 2.1, a second water stopping part 2.2 and a third water stopping part 2.3, the first water stopping part 2.1 is embedded in the new concrete structure 4 and is horizontally arranged, the second water stopping part 2.2 is horizontally laid at the bottom of the mounting groove 1, the third water stopping part 2.3 connects the first water stopping part 2.1 and the second water stopping part 2.2 together, and the third water stopping part 2.3 is clamped in the structural seam F; the water stopping unit 2 is of an integrated structure, and a water stopping copper plate is preferably selected;
a connecting assembly having a plurality of anchoring members (i.e., expansion bolts 5 anchored in the old concrete structure 3) for fixing the second water stop portion 2.2 in the installation groove 1, wherein the second water stop portion 2.2 is fixedly installed in the old concrete structure 3 by using a plurality of expansion bolts 5 perpendicular to the second water stop portion 2.2;
the anti-seepage structure layer is provided with a backfill layer 6 (generally adopting cement mortar) paved in the mounting groove 1 and a waterproof layer 7 (preferably epoxy mortar with waterproof performance) horizontally paved on the backfill layer 6, the thickness of the backfill layer 6 can be controlled to be about 100mm, the thickness of the waterproof layer 7 is controlled to be 30mm, the second water stopping part 2.2 can be buried in the old concrete structure 3, and the water stopping performance of the waterproof layer 7 improves the anti-seepage effect of the upstream face; and the sealing layer 9 is filled in the structure seam F and used for connecting the waterproof layer 7 and the new concrete structure 4 in a sealing mode.
In the above embodiment, the first water stop portion 2.1 is buried in the new concrete structure 4, the second water stop portion 2.2 is anchored in the old concrete structure 3 through the expansion bolt 5, the third water stop portion 2.3 is clamped in the structure seam, the third water stop portion 2.3 has a certain deformation space, can adapt to the deformation caused by the asymmetric settlement of the concrete, ensures the water stop effect and the anti-seepage performance of the structure seam, and prolongs the operation time of the hydraulic structure; the anti-seepage structure layer can not only adjust the flatness of the structure joint, but also ensure the waterproof and anti-seepage performance of the old concrete structure 3; and a sealing layer (preferably epoxy sealant) is filled in the structural joint, so that the sealing connection of the old concrete structure 3 and the new concrete structure 4 is realized, and the sealing property and the seepage-proofing property of the structural joint are ensured.
The widths of the first water-stopping part 2.1 and the second water-stopping part 2.2 are 150mm, and the widths of the first water-stopping part 2.1 and the second water-stopping part 2.2 further ensure fixed widths, so that the construction quality is ensured;
the third water stop part 2.3 is preferably a U-shaped structure clamped in the structural seam F, the width of the third water stop part 2.3 is 20mm, the height of the third water stop part is 50mm, the deformation caused by asymmetric settlement of concrete can be adapted, the water stop effect is ensured, and the later-stage anti-seepage reliability is enhanced;
the first water stop portion 2.1 and the second water stop portion 2.2 are both provided with a folded edge 2.4 (the direction of the folded edge is opposite to that of the third water stop portion 2.3) extending perpendicularly to the adjacent water side, the height of the folded edge is 30mm, the construction quality of the water stop unit 2 is further ensured, and the water stop effect and the seepage prevention performance are further ensured.
As shown in fig. 2, the water stopping structure of the present embodiment further includes a sealing assembly, and the sealing assembly includes a lower gasket 8.1 horizontally laid on the bottom wall of the mounting groove 1 and an upper gasket 8.2 horizontally laid on the second water stopping portion 2.2. The second water stop part 2.2 is positioned between the two sealing gaskets, and the sealing component and the second water stop part 2.2 are fixed in the mounting groove 1 by the expansion bolts 5, so that the sealing performance of the second water stop part 2.2 is ensured. In addition, a fastening steel plate 8.3 is arranged between the expansion bolt 5 and the upper sealing gasket 8.2, so that the stress area of the upper sealing gasket 8.2 is increased, and the phenomenon that the service life of the upper sealing gasket 8.2 is influenced by local concentrated stress is avoided.
In actual processing, the upper sealing gasket 8.2 and the lower sealing gasket 8.1 all adopt the rubber pad, the perforation of interval unanimity is all seted up on the second stagnant water portion 2.2 of upper sealing gasket 8.2 and lower sealing gasket 8.1 and stagnant water unit 2, and the perforation interval on 1 diapire of mounting groove is unanimous, so that fix the upper sealing gasket 8.2, the lower sealing gasket 8.1 and the second stagnant water portion 2.2 on the diapire of mounting groove 1, and then realize the fixed of second stagnant water portion 2.2 and old concrete structure 3.
The utility model discloses a stagnant water structure's construction steps as follows:
cutting an installation groove 1 at the edge of the old concrete structure 3 according to the design requirement; then drilling holes at intervals along the length direction of the mounting groove 1, wherein the hole distance is 300mm, and the hole depth is 350mm;
trowelling the bottom wall of the mounting groove 1 by mortar, then laying a lower sealing gasket 8.1, a second water-stopping part 2.2 of the water-stopping unit 2 and an upper sealing gasket 8.2 in sequence, inserting each expansion bolt 5 into a drill hole after sequentially penetrating a fastening steel plate 8.3, the upper sealing gasket 8.2, the second water-stopping part 2.2 and the lower sealing gasket 8.1 from top to bottom, and injecting anchoring glue into the drill hole to anchor the expansion bolt 5 in the drill hole;
wherein, when laying the second water-stop part 2.2, a side wall of the third water-stop part 2.3 is ensured to be closely attached to the joint surface of the old concrete structure 3, so as to ensure that the third water-stop part 2.3 is positioned in the structure joint F;
the second water stopping part 2.2 can be fixed to realize the fixation of the water stopping unit 2, a template is erected in the installation groove 1, cement mortar is poured into the template by using a grouting pipe and is vibrated to be dense, so that a backfill layer 6 with the thickness of 100mm is formed;
after the backfill layer 6 is constructed, coating epoxy mortar with the thickness of 30mm on the backfill layer 6 to form a waterproof layer 7, which is shown in fig. 2;
a new concrete structure 4 is poured at the designed position, so that the first water stop part 2.1 is buried in the gap F of the new concrete structure; and finally, filling sealant in the structural joints of the old concrete structure 3 and the new concrete structure 4 to form a sealing layer, so that the water-stopping and seepage-proofing properties of the dense structural joint F are realized.
During actual construction, the sealing device can be used for firstly cutting, then fixing and finally sealing, the construction process is simple, the construction quality is convenient to control, the good anti-seepage effect is achieved, the structure of the water stopping unit 2 can also adapt to the deformation of the new concrete structure 3 and the old concrete structure 3, and the reliability of later anti-seepage is enhanced.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.
Finally, it should be emphasized that the above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the invention, and that, although the present invention has been described in detail with reference to the above-described embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments without inventive effort, or that certain features may be substituted in equivalents thereof. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a stagnant water structure that is used for new, old concrete structure seam department which characterized in that: the water stopping structure is arranged at the structural joint of the new concrete structure and the old concrete structure and comprises
The mounting groove is formed in the upper surface of the old concrete structure and communicated with the structure seam;
the water stopping unit is provided with a first water stopping part, a second water stopping part and a third water stopping part, the first water stopping part is buried in a new concrete structure, the second water stopping part is paved at the bottom of the mounting groove, and the third water stopping part is arranged between the first water stopping part and the second water stopping part and is positioned in the structural joint;
the connecting assembly is provided with a plurality of anchoring pieces for fixing the second water stopping part in the mounting groove, and each anchoring piece is vertical to the second water stopping part;
the anti-seepage structure layer is provided with a backfill layer laid in the mounting groove and a waterproof layer laid on the backfill layer, and the thickness of the waterproof layer is more than or equal to 25mm; and
and the sealing layer is filled in the structure seam and is used for connecting the waterproof layer and the new concrete structure together in a sealing manner.
2. A water stopping structure for joints of new and old concrete structures according to claim 1, wherein: the third water stop part is of a U-shaped structure embedded in the structural seam, and the width of the third water stop part is 15-25 mm; the height of the third water stop part is 35-60 mm.
3. A water stopping structure for joints of new and old concrete structures according to claim 2, wherein: the first water-stop part and the second water-stop part are respectively provided with a folded edge which vertically extends towards the adjacent water side, the height of the folded edge is 20-40 mm, and the direction of the folded edge is opposite to that of the third water-stop part.
4. A water stopping structure for joints of new and old concrete structures according to claim 1, wherein: the width of the first water-stopping part and the width of the second water-stopping part are both larger than 120mm.
5. The water stopping structure for the joints of the new and old concrete structures as claimed in claim 1, wherein: the stagnant water structure still includes seal assembly, seal assembly includes that water tiling is established lower sealing gasket and level on the mounting groove diapire are laid the last sealing gasket in second stagnant water portion.
6. A waterstop structure for joints of new and old concrete structures according to claim 5, characterized in that: a plurality of anchor assembly pieces are arranged along the length direction of the installation groove at intervals, and the anchor assembly pieces are expansion bolts anchored in the old concrete structure.
7. The waterstop structure for joints of new and old concrete structures according to claim 6, wherein: and a fastening steel plate for compressing the sealing assembly is arranged on the expansion bolt in a penetrating manner.
8. A water stopping structure for joints of new and old concrete structures according to claim 1, wherein: the thickness of the backfill layer is 80-120 mm, and the thickness of the waterproof layer is 25-35 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222218734.XU CN218091363U (en) | 2022-08-23 | 2022-08-23 | Water stop structure for joint of new and old concrete structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222218734.XU CN218091363U (en) | 2022-08-23 | 2022-08-23 | Water stop structure for joint of new and old concrete structures |
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| Publication Number | Publication Date |
|---|---|
| CN218091363U true CN218091363U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222218734.XU Active CN218091363U (en) | 2022-08-23 | 2022-08-23 | Water stop structure for joint of new and old concrete structures |
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| CN (1) | CN218091363U (en) |
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- 2022-08-23 CN CN202222218734.XU patent/CN218091363U/en active Active
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