CN216041264U - Underground continuous wall flexible joint stagnant water slip casting structure - Google Patents
Underground continuous wall flexible joint stagnant water slip casting structure Download PDFInfo
- Publication number
- CN216041264U CN216041264U CN202122115647.7U CN202122115647U CN216041264U CN 216041264 U CN216041264 U CN 216041264U CN 202122115647 U CN202122115647 U CN 202122115647U CN 216041264 U CN216041264 U CN 216041264U
- Authority
- CN
- China
- Prior art keywords
- wall
- grouting
- gap
- arc
- slip casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The utility model discloses a water-stopping and grouting structure for a flexible joint of an underground diaphragm wall, and belongs to the technical field of underground diaphragm wall joints. The floor comprises two adjacent floor walls which are connected, wherein the adjacent floor walls are respectively called a first floor wall and a second floor wall; the connection terminal surface of first ground wall adopts the cross section to be curved arc concave surface, and the connection terminal surface of second ground wall adopts the cross section to be curved arc convex surface, forms a cross section for the slip casting gap of crescent behind arc concave surface and the cooperation of arc convex surface, packs flexible stagnant water thick liquids in the space. Positioning a grouting area at a grouting gap at the outer half side of the wall body of the underground continuous wall, injecting flexible water-stopping slurry from the grouting gap at the outer half side, and blocking underground water at the outer side of the underground continuous wall to prevent the underground water from permeating from a joint; the extension line of the grouting hole forms a blind hole in the inner part of the other floor, and after the gap and the blind hole are filled with the flexible water stop slurry, the surface roughness of the joint is increased, and the stability of the joint is improved.
Description
Technical Field
The utility model relates to a water-stopping and grouting structure for a flexible joint of an underground diaphragm wall, and belongs to the technical field of underground diaphragm wall joints.
Background
At present, underground diaphragm walls are widely used in foundation engineering, and are particularly used for supporting deep foundation pits. The problems of water seepage and water leakage of the underground continuous wall are difficult problems, in particular to the water leakage at the joint of a flexible (locking pipe). Because there is the construction cold joint between the two ground wall concretes of flexible joint, and press from both sides the mud probability very big, underground continuous wall enclosure warp simultaneously in the foundation ditch excavation process, and the joint gap increases, arouses to connect the problem of infiltration, leaking. Because the seam is positioned at the end of concrete pouring, the local concrete is easy to clamp mud, and the anti-permeability effect of the wall body is influenced. In the process of excavation of a foundation pit, the enclosure body deforms, so that the seam of the ground wall is enlarged, and secondary water leakage is caused.
At present, when flexible water stop slurry is filled in the locked pipe joint of the underground diaphragm wall, the filling is not full enough, the outside gap is difficult to permeate, a waterproof hole is formed, and the water stop effect of the joint of the underground diaphragm wall is influenced. Therefore, the flexible joint water-stop grouting structure and process for the underground diaphragm wall are designed, the flexible water-stop grouting structure has the advantages that gaps are formed in the flexible water-stop slurry, the flexible water-stop slurry is easy to permeate, the filling effect is better, secondary leakage caused by joint deformation is reduced, and waterproof holes are not prone to occurring.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: the utility model provides an underground continuous wall flexible joint stagnant water slip casting structure, it has solved the difficult comprehensive problem of infiltration when present underground continuous wall joint design is filling flexible stagnant water thick liquids.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
a flexible joint water-stop grouting structure for an underground continuous wall comprises two adjacent ground walls which are connected, wherein the adjacent ground walls are respectively called a first ground wall and a second ground wall, and a grouting gap is formed between the first ground wall and the second ground wall;
the connecting end face of the first ground wall is an arc-shaped concave face with an arc-shaped cross section, the connecting end face of the second ground wall is an arc-shaped convex face with an arc-shaped cross section, the radius of the arc-shaped concave face is smaller than that of the arc-shaped convex face, a grouting gap with a crescent-shaped cross section is formed after the arc-shaped concave face and the arc-shaped convex face are matched, the middle part of the grouting gap is wide, two sides of the grouting gap are gradually narrowed, a joint is formed at the contact part of the arc-shaped concave face and the inner side and the outer side of the arc-shaped convex face, and flexible water stopping slurry is filled in the gap;
the second ground wall inside is equipped with the slip casting hole that leads to the space middle part, and the slip casting hole leads to the slip casting region of the half outside of slip casting gap central line, and slip casting hole length satisfies the outer half side slip casting region of the slip casting gap that drilling skew passed the ground wall to form the blind hole in getting into first ground wall.
As a preferred example, the grouting holes are communicated with the middle eccentric cavity of the gap from the inner side joint of the ground wall, and the included angle between the grouting holes and the inner side surface of the ground wall is 45-65 degrees.
As a preferred example, the grouting holes are distributed at equal intervals along the inner side seam of the ground wall.
The utility model has the beneficial effects that:
(1) the joint of the underground diaphragm wall adopts the matching of the arc concave surface and the arc convex surface, the existing equidistant gap is deformed into a crescent grouting gap in a micro mode, the middle of the gap is wide, and two sides of the gap are narrowed gradually, so that the gap can be filled uniformly by smoothly permeating from the middle to two sides through grouting;
(2) positioning a grouting area at a grouting gap at the outer half side of the wall body of the underground continuous wall, injecting flexible water-stopping slurry from the grouting gap at the outer half side, and blocking underground water at the outer side of the underground continuous wall to prevent the underground water from permeating from a joint;
(3) the flexible water-stopping slurry is injected into the grouting gap on the outer half side of the underground wall, and when the underground continuous wall enclosure deforms again, the deformation of the grouting gap on the outer half side is small, so that secondary leakage caused by joint deformation is reduced;
(4) the extension line of the grouting hole forms a blind hole in the inner part of the other floor, and after the flexible water-stopping slurry is filled in the gap and the blind hole, the surface roughness of the joint is increased, and the stability of the joint is improved;
(5) when second ground wall concrete placement of later stage construction, joint department (public head) presss from both sides mud easily, and drilling slip casting is located the second ground wall, leads to public head department, and flexible stagnant water thick liquids can replace the packing when meetting public head and press from both sides mud, guarantees the public head of wall body and locates the prevention of seepage effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the drilling angle range of the grouting holes in the present invention;
FIG. 3 is a schematic view of the inner side of the present invention.
In the figure: the wall structure comprises a first ground wall 1, a second ground wall 2, an arc-shaped concave surface 101, an arc-shaped convex surface 201, a grouting hole 3, a blind hole 301 and a seam 4.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the utility model easy to understand, the utility model is further described with reference to the specific drawings.
Example 1
A flexible joint water-stopping grouting structure for an underground continuous wall comprises two adjacent ground walls which are connected, wherein the adjacent ground walls are respectively called a first ground wall 1 and a second ground wall 2, and a grouting gap is formed between the first ground wall 1 and the second ground wall 2;
the connecting end surface of the first floor wall 1 is an arc-shaped concave surface 101 with an arc-shaped cross section, the connecting end surface of the second floor wall 2 is an arc-shaped convex surface 201 with an arc-shaped cross section, the radius of the arc-shaped concave surface 101 is smaller than that of the arc-shaped convex surface 201, a grouting gap with a crescent cross section is formed after the arc-shaped concave surface 101 is matched with the arc-shaped convex surface 201, the middle part of the grouting gap is wide, two sides of the grouting gap are gradually narrowed, a joint 4 is formed at the contact part of the arc-shaped concave surface 101 and the inner side and the outer side of the arc-shaped convex surface 201, and flexible water stop slurry is filled in the gap;
the inboard slip casting hole 3 that leads to the space middle part that is equipped with of second ground wall 2, slip casting hole 3 lead to the slip casting region of the half outside of slip casting gap central line, and 3 lengths in slip casting hole satisfy the drilling skew and pass the half side slip casting region outside of the slip casting gap of ground wall to form blind hole 301 in getting into first ground wall 1.
The first ground wall 1 is a later ground wall, the second ground wall 2 is a later ground wall, and the later ground wall is a male wall.
Example 2
The grouting holes 3 are led into the middle part of the gap from the inner side joint 4 of the ground wall and are inclined to the outer side cavity, and the included angle between the grouting holes 3 and the inner side surface of the ground wall is 45-65 degrees. The filling of the outer side is facilitated, the filling of the outer side is fuller, and the groundwater is better blocked. The other structure is the same as embodiment 1.
Example 3
The grouting holes 3 are distributed at equal intervals along the inner side joint 4 of the ground wall. The plurality of grouting holes 3 are arranged at equal intervals, so that uniform grouting is facilitated. The other structure is the same as embodiment 1.
The construction method comprises the following steps:
it comprises the following steps:
(1) in the process of foundation pit excavation, after the continuous wall is poured and formed, the existing equidistant gaps are slightly deformed into crescent grouting gaps;
(2) adopting a long spiral drill bit, drilling into the middle part of a crescent gap of the underground continuous wall from the position of a joint 4 on the inner side of the underground continuous wall and forming a certain included angle with the wall surface of the underground continuous wall, and enabling the drill bit to enter the wall body on the other side for a certain length to form a blind hole 301;
(3) after drilling, pulling out the drill bit and removing drilling slag in the drill hole;
(4) installing a grouting head at a drilling position, and injecting flexible water stopping slurry (a commercial product) at a certain pressure;
(5) when the grouting amount reaches the design requirement or the grouting pressure reaches the set pressure value, the grouting can be stopped, the grouting stopping condition adopts the principle of double control of the grouting amount and the grouting pressure, the grouting amount pressure is used as the main part, and the grouting amount is used as the auxiliary part.
In conclusion, it has the following advantages:
(1) the joint of the underground diaphragm wall adopts the matching of the arc concave surface 101 and the arc convex surface 201, the existing equidistant gap is deformed into a crescent grouting gap in a micro mode, the middle of the gap is wide, and two sides of the gap are narrowed gradually, so that the gap can be smoothly permeated from the middle part in grouting to the two sides, and the gap filling can be completed more uniformly;
(2) positioning a grouting area at a grouting gap at the outer half side of the wall body of the underground continuous wall, injecting flexible water-stopping slurry from the grouting gap at the outer half side, and blocking underground water at the outer side of the underground continuous wall to prevent the underground water from permeating from the seam 4;
(3) the flexible water-stopping slurry is injected into the grouting gap on the outer half side of the underground wall, and when the underground continuous wall enclosure deforms again, the deformation of the grouting gap on the outer half side is small, so that secondary leakage caused by joint deformation is reduced;
(4) the extension line of the grouting hole 3 forms a blind hole 301 in the other floor, and after the gap and the blind hole 301 are filled with the flexible water stopping slurry, the surface roughness of the joint is increased, and the stability of the joint is improved;
(5) when second basement 2 concrete placement of later stage construction, joint department (public head) presss from both sides mud easily, and drilling slip casting is located second basement 2, leads to public head department, and flexible stagnant water thick liquids can replace the packing when meetting public head and press from both sides mud, guarantees the public head of wall body and locates the prevention of seepage effect.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides an underground continuous wall flexible joint stagnant water slip casting structure, it includes two adjacent ground walls that are connected, and adjacent ground wall is called first ground wall and second ground wall respectively, forms slip casting gap between first ground wall and the second ground wall, its characterized in that:
the connecting end face of the first ground wall is an arc-shaped concave face with an arc-shaped cross section, the connecting end face of the second ground wall is an arc-shaped convex face with an arc-shaped cross section, the radius of the arc-shaped concave face is smaller than that of the arc-shaped convex face, a grouting gap with a crescent-shaped cross section is formed after the arc-shaped concave face and the arc-shaped convex face are matched, the middle part of the grouting gap is wide, two sides of the grouting gap are gradually narrowed, a joint is formed at the contact part of the arc-shaped concave face and the inner side and the outer side of the arc-shaped convex face, and flexible water stopping slurry is filled in the gap;
the second ground wall inside is equipped with the slip casting hole that leads to the space middle part, and the slip casting hole leads to the slip casting region of the half outside of slip casting gap central line, and slip casting hole length satisfies the outer half side slip casting region of the slip casting gap that drilling skew passed the ground wall to form the blind hole in getting into first ground wall.
2. The flexible joint water-stopping grouting structure for the underground continuous wall as claimed in claim 1, wherein the grouting holes are led into the middle cavity of the gap from the joint of the inner side of the underground wall, and the included angle between the grouting holes and the inner side of the underground wall is 45-65 degrees.
3. The flexible joint water-stopping grouting structure for the underground continuous wall as claimed in claim 1, wherein the grouting holes are distributed at equal intervals along the inner seam of the underground wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122115647.7U CN216041264U (en) | 2021-09-02 | 2021-09-02 | Underground continuous wall flexible joint stagnant water slip casting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122115647.7U CN216041264U (en) | 2021-09-02 | 2021-09-02 | Underground continuous wall flexible joint stagnant water slip casting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216041264U true CN216041264U (en) | 2022-03-15 |
Family
ID=80597105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122115647.7U Active CN216041264U (en) | 2021-09-02 | 2021-09-02 | Underground continuous wall flexible joint stagnant water slip casting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216041264U (en) |
-
2021
- 2021-09-02 CN CN202122115647.7U patent/CN216041264U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105780792B (en) | A kind of foundation pit high water head Dewatering by pressure reduction well shut-in well method and structure of shunting in a well | |
| CN109853477B (en) | Centralized leakage blocking structure and method for changing dynamic water into static water in gallery | |
| CN216041264U (en) | Underground continuous wall flexible joint stagnant water slip casting structure | |
| CN102747722B (en) | Underground continuous wall joint close grouting and covering construction method and expansion rubber plug | |
| CN110762287A (en) | Curved pipe jacking interface water stop structure suitable for high water pressure condition | |
| WO2019105110A1 (en) | Outer water seal for vertical jacking | |
| CN109854814A (en) | A kind of jacking pipe structure and the method for jacking pipe structure periphery lubrication slip casting | |
| CN210978736U (en) | Curved pipe jacking interface water stop structure suitable for high water pressure condition | |
| CN116411593A (en) | Slurry stopping device for preventing vertical joint of prefabricated diaphragm wall from flowing around and construction method | |
| CN215105242U (en) | Water-stop type angle lug steel sheet pile | |
| CN212223974U (en) | Underground continuous wall and back cover concrete's leak protection connection structure | |
| CN208346871U (en) | Block type lifts deformation observing device | |
| CN212801603U (en) | Foundation pit bottom plate reserved precipitation plugging device | |
| CN110565740B (en) | Method for connecting open hole of submarine tunnel and riser | |
| CN210946855U (en) | Plugging device for dewatering well | |
| CN113279415A (en) | High-pressure slurry retaining wall construction method for grooving underground continuous wall | |
| CN113373904A (en) | Water-stop type angle lug steel sheet pile and construction method | |
| CN113322959A (en) | Grouting pipe joint and pre-buried grouting pipe | |
| CN219453073U (en) | Bolt connection type concrete rectangular jacking pipe | |
| CN201433395Y (en) | Tri-circular safe pile casing for environment-friendly manual-excavated piles | |
| CN219261116U (en) | Multilayer waterproof structure of pipe gallery | |
| CN108331045A (en) | Block type lifts deformation observing device and its Embedment and installation method | |
| CN220908446U (en) | Novel dewatering well shutoff connects | |
| CN111172991A (en) | Embedded steel bar sleeve type prefabricated underground continuous wall | |
| CN214005597U (en) | Earth and rock dykes and dams are worn dam culvert pipe and are led to arrange to encapsulate and irritate core combination block structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |