CN213389995U - Cast-in-place concrete core wall and gravity dam connection structure - Google Patents
Cast-in-place concrete core wall and gravity dam connection structure Download PDFInfo
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- CN213389995U CN213389995U CN202021932013.XU CN202021932013U CN213389995U CN 213389995 U CN213389995 U CN 213389995U CN 202021932013 U CN202021932013 U CN 202021932013U CN 213389995 U CN213389995 U CN 213389995U
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Abstract
A connecting structure of a cast-in-place concrete core wall and a gravity dam comprises the concrete gravity dam, wherein a connector is reserved at one end of the concrete gravity dam, and a water stop and a drain hole are pre-buried in the connector; the concrete impervious wall is matched with an interface on the concrete gravity dam through a joint to form a structural joint, and caulking factice is filled in the structural joint to form a first impervious line; and backfilling impermeable concrete above the concrete gravity dam and the concrete impermeable wall to form a second impermeable line. The utility model provides a pair of cast-in-place concrete core and gravity dam connection structure can effectual solution concrete core and concrete gravity dam joint position warp, hydraulic fracture and seepage scheduling problem.
Description
Technical Field
The utility model belongs to the technical field of the hydraulic concrete construction and specifically relates to a cast-in-place concrete core wall and gravity dam connection structure.
Background
In conventional hydraulic concrete construction, an earth-rock dam is connected with a gravity dam, which is often called as a soft joint, and is generally constructed under geological conditions with better foundation conditions. The existing concrete core wall and the joint part of the concrete gravity dam are easy to deform, have hydraulic fracture, leak and other problems.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a connecting structure of a cast-in-place concrete core wall and a gravity dam, which effectively solves the problems of deformation, hydraulic fracture, leakage and the like of the joint part of the concrete core wall and the concrete gravity dam; and the construction investment is low, the efficiency is high, the operation is simple, and the anti-seepage effect is more ensured.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a connecting structure of a cast-in-place concrete core wall and a gravity dam comprises the concrete gravity dam, wherein a connector is reserved at one end of the concrete gravity dam, and a water stop and a drain hole are pre-buried in the connector; the concrete impervious wall is matched with an interface on the concrete gravity dam through a joint to form a structural joint, and caulking factice is filled in the structural joint to form a first impervious line; and backfilling impermeable concrete above the concrete gravity dam and the concrete impermeable wall to form a second impermeable line.
The joint is of a convex structure.
The drain hole is arranged between the two water stop belts and spans the structural seam.
The utility model relates to a cast-in-place concrete core wall and gravity dam connection structure has following technological effect:
1) and by pre-burying the water stop and the drain hole during the construction of the concrete gravity dam, the construction of the drain hole is followed with the construction along with the connection and the leading of the water stop, and the construction workload is smaller. In addition, the drain hole can also guide and drain a small amount of water seepage among the waterstops and can be used as a grouting hole to perform grouting plugging on the waterstops when a large amount of water seepage occurs during water stopping.
2) The construction of the concrete gravity dam can be carried out in advance by pre-embedding the water stop and the drain hole and reserving the concave type interface, so that the construction time is saved.
3) And forming a first seepage-proofing line by caulking factice, and forming a second seepage-proofing line by backfilling seepage-proofing soil materials. Therefore, the influence caused by conventional construction defects such as water leakage and the like is effectively reduced.
4) And in the pouring process of the cast-in-place concrete impervious wall, the structural joint can be reserved in a mode of filling the foam board, and the caulking factice is filled after the foam board is smashed and blown out in the later stage. The construction operation is simple and convenient, and the construction effect is good.
5) And in the pouring process of the gravity dam and the subsequent impervious wall, the water conservancy splitting problem is caused by ensuring that the joint part cannot deform by means of measures such as strict control of the blanking part, the pouring speed and the like.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
In the figure: the concrete gravity dam comprises a concrete gravity dam 1, a cast-in-place concrete impervious wall 2, a water stop 3, a water drain hole 4, a structural joint 5, caulking factice 6, impervious soil 7 and a joint 8.
Detailed Description
As shown in fig. 1-2, a connection structure of a cast-in-place concrete core wall and a gravity dam comprises a concrete gravity dam 1, a cast-in-place concrete impervious wall 2, a water stop 3, a water discharge hole 4, a structure joint 5, caulking factice 6, impervious soil 7 and the like.
The concrete gravity dam 1 is constructed in advance and is reserved with a concave interface. The water stop 3 and the water discharge hole 4 are embedded in the concave interface. The drain hole 4 must be placed in the middle of the two water stops 3 and across the structural seam 5.
And (3) subsequent construction of the cast-in-place concrete impervious wall 2, wherein the cast-in-place concrete impervious wall 2 is inserted into a concave joint of the concrete gravity dam 1 through a convex joint 8 to form a structural joint 5, and a caulking factice 6 is filled in the joint to form a first seepage-proofing line. In the pouring process of the cast-in-place concrete impervious wall 2, the structural joint 5 can be reserved in advance in a foam plate filling mode, and the filling of caulking factice 6 is carried out after the foam plate is smashed and blown out in the later period.
And backfilling the impermeable soil material 7 after the cast-in-place concrete impermeable wall 2 is poured to form a second impermeable line.
The working principle and the process are as follows:
1) and constructing the concrete gravity dam: the concrete gravity dam 1 is pre-constructed with a concave interface, and the water stop 3 and the drain hole 4 are pre-embedded in advance.
2) And constructing the cast-in-place concrete impervious wall: when the cast-in-place concrete impervious wall 2 is constructed, the impervious wall is inserted into the concrete gravity dam 1 by adopting the convex joint 8, the structural joint 5 is reserved in a foam board filling mode, and the caulking factice 6 is filled after the foam board is smashed and blown out in the later period to form a first seepage-proofing line.
3) And backfilling impermeable soil materials: and backfilling the impermeable soil material 7 after the cast-in-place concrete impermeable wall 2 is poured to form a second impermeable line.
Claims (3)
1. The utility model provides a cast-in-place concrete core wall and gravity dam connection structure which characterized in that: the water-stop dam comprises a concrete gravity dam (1), wherein a connector is reserved at one end of the concrete gravity dam (1), and a water-stop belt (3) and a drain hole (4) are pre-buried in the connector; the concrete impervious wall (2) is matched with an interface on the concrete gravity dam (1) through a joint (8) to form a structural joint (5), and caulking factice (6) is filled in the structural joint (5) to form a first impervious line; and backfilling impermeable soil materials (7) above the concrete gravity dam (1) and the concrete impermeable wall (2) to form a second impermeable line.
2. The cast-in-place concrete core and gravity dam connection structure of claim 1, wherein: the joint (8) is of a convex structure.
3. The cast-in-place concrete core and gravity dam connection structure of claim 1, wherein: the drain hole (4) is arranged between the two water stop belts (3) and spans the structural seam (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021932013.XU CN213389995U (en) | 2020-09-07 | 2020-09-07 | Cast-in-place concrete core wall and gravity dam connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021932013.XU CN213389995U (en) | 2020-09-07 | 2020-09-07 | Cast-in-place concrete core wall and gravity dam connection structure |
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| Publication Number | Publication Date |
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| CN213389995U true CN213389995U (en) | 2021-06-08 |
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| CN202021932013.XU Active CN213389995U (en) | 2020-09-07 | 2020-09-07 | Cast-in-place concrete core wall and gravity dam connection structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931136A (en) * | 2021-11-30 | 2022-01-14 | 王开明 | Structure and design method of waterproof expansion joint |
| CN115247408A (en) * | 2022-07-29 | 2022-10-28 | 中国电建集团华东勘测设计研究院有限公司 | Annular structural seam structure between concrete of riverbed dam foundation gallery and bank slope gallery |
-
2020
- 2020-09-07 CN CN202021932013.XU patent/CN213389995U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931136A (en) * | 2021-11-30 | 2022-01-14 | 王开明 | Structure and design method of waterproof expansion joint |
| CN115247408A (en) * | 2022-07-29 | 2022-10-28 | 中国电建集团华东勘测设计研究院有限公司 | Annular structural seam structure between concrete of riverbed dam foundation gallery and bank slope gallery |
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