Structure for enhancing joint water stop effect of underground diaphragm wall
By setting limiting inclined plates and grouting pipes at the included angle of the H-beam, cement grout is injected to squeeze out the residue, solving the problem of cleaning the inner circumference of the H-beam and improving the water-stopping performance and structural strength of the diaphragm wall.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2026-03-24
AI Technical Summary
Existing H-shaped steel structures have dead corners at the joints of diaphragm walls that are difficult to clean, leading to mud inclusion and water leakage, which reduces the water-stopping function and service life of the diaphragm walls.
Limiting inclined plates and grouting pipes are installed at the included angle of the H-beam. By injecting cement grout, the residue is squeezed out to form a cement grout layer, which enhances the connection between the H-beam and the reinforcing cage, extends the seepage path, and forms a dense structure.
Effective cleaning of the inner circumference of H-beams reduces structural defects such as leaks, improves the strength and waterproofing performance of diaphragm walls, and ensures the water-stopping effect of joint structures.
Smart Images
Figure CN224031649U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a diaphragm wall joint structure technical field, specifically a structure of reinforcing diaphragm wall joint water stop effect. BACKGROUND
[0002] The diaphragm wall is a kind of foundation engineering, and a kind of trenching machine is used on ground, and along the axis of deep excavation engineering, under the condition of mud protection wall, a long and narrow deep trench is excavated, after clearing the trench, steel reinforcement cage is hoisted in the trench, then the guide pipe method is used to fill and build underwater concrete to form a unit slot section, so it is carried out section by section, and a continuous reinforced concrete wall is built underground, as water interception, anti-seepage, load-bearing, water retaining structure.The above-mentioned diaphragm wall is formed by section construction, and H-shaped steel is usually installed between adjacent diaphragm walls as joint structure to play corresponding water stop function, but the current H-shaped steel structure is mostly simple, and after installation, the inner circumferential surface of H-shaped steel is often dead angle, cannot be cleaned, in the case of mixing with residual slag, the diaphragm wall formed by concrete pouring usually appears structure defects such as mud inclusion, the strength is significantly reduced, there is seepage path of underground water, and the joint leakage occurs, greatly reduce the water stop function and service life of diaphragm wall. CONTENT OF UTILITY MODEL
[0003] The utility model aims at providing a structure of reinforcing diaphragm wall joint water stop effect, limit inclined plate and the grouting pipe and water stop steel plate that cooperate are additionally arranged on the basis of original H-shaped steel, water flow path is prolonged to play water stop effect, the H-shaped steel angle position of residual slag is replaced by injecting cement slurry, extruding internal mud, reducing the generation of internal leakage structure or mud inclusion defect, improving the strength of diaphragm wall, solve the problem in the prior art.
[0004] The utility model discloses a technical scheme that solves its technical problem is adopted: a structure of reinforcing underground continuous wall joint water stop effect, including a plurality of side -by -side arrangement's H type steel, each H type steel is by the flange plate of both sides and the web between flange plate and is composed, the underground continuous wall is arranged between the adjacent H type steel, and the reinforcing cage is arranged in the underground continuous wall, wherein the included angle position of the flange plate and the web of H type steel one side all sets up corresponding two limit inclined boards, and the gap is left between two limit inclined boards, and the grouting pipe of vertical arrangement is inserted in the space that limit inclined board, flange plate and web compose, and the outer periphery of grouting pipe is provided with grouting hole, and the outer periphery of grouting pipe is filled with cement slurry layer, and cement slurry layer is located in the space that limit inclined board, flange plate and web compose, still be connected with the steel sheet on grouting pipe, and the gap between steel sheet and two limit inclined boards cooperates, and the end of steel sheet is in contact with reinforcing cage, and the grouting pipe is fixedly connected in the included angle position of the flange plate and the web of H type steel another side, and the outer periphery of grouting pipe is filled with cement slurry layer, and the flange plate of welding has grouting pipe one side and reinforcing cage fixed connection, and the flange plate of inserting has grouting pipe one side and reinforcing cage is connected through concrete. The two sides of reinforcing cage near H type steel web one end all are equipped with bevel, and the inclination angle of bevel and limit inclined board is consistent, and the end of steel sheet is in close contact with bevel. The outer surface of steel sheet is coated with galvanized layer. The included angle between limit inclined board and H type steel flange plate is 45 degrees, and the distance between limit inclined board on flange plate and web is 5cm, and the gap width between two limit inclined boards is 2-3cm.
[0005] The utility model discloses a structure of reinforcing underground continuous wall joint water stop effect, H type steel both sides are the underground continuous wall with reinforcing cage, set up limit inclined board in the included angle position of the flange plate and the web of H type steel one side, and insert grouting pipe and steel sheet in the space in limit inclined board, and the grouting pipe is fixedly connected in the included angle position of the flange plate and the web of H type steel another side, and the cement slurry is injected into the space in limit inclined board through grouting pipe, and the residual residual slag in the interior is extruded and replaced, and forms cement slurry layer, improves the cleaning quality of mud on H type steel inner periphery, and makes the more compact integration structure between ground connected wall and H type steel, reduces the generation of internal leakage structure defect or mud sandwich, and the setting of steel sheet can also prolong the water seepage path, and forms the corresponding waterproof structure with reinforcing cage, and then ensures the water stop performance of ground connected wall joint structure. BRIEF DESCRIPTION OF DRAWINGS
[0006] Figure 1 It is the structure schematic diagram of the utility model;
[0007] Figure 2 It is Figure 1 The partial enlarged view of I in;
[0008] Figure 3It is a structure schematic diagram of the grouting pipe with the steel plate;
[0009] Figure 4 It is Figure 3 An enlarged view of the A-A sectional view. DETAILED DESCRIPTION
[0010] The utility model discloses a structure of reinforcing underground continuous wall joint water stop effect, like Figure 1 And Figure 2 As shown, it comprises a plurality of H-shaped steels 1 arranged side by side, each H-shaped steel 1 is composed of flange plates arranged side by side and webs between the flange plates, the flange plates and the webs are arranged perpendicularly, and the position where the flange plates and the webs intersect is an included angle position with residual slag or mud.
[0011] The adjacent H-shaped steels 1 are provided with underground continuous walls 2, and the underground continuous walls 2 are arranged with steel cages 3, and the steel cages 3 can effectively improve the strength of the underground continuous walls 2 as internal frameworks.
[0012] The grouting pipe 5 is inserted and installed in the space composed of the limiting inclined plates 4, the flange plates and the webs, the grouting pipe 5 is provided with grouting holes 6 on the outer periphery, the outer periphery of the grouting pipe 5 is filled with a cement slurry layer 7, the cement slurry layer 7 is located in the space composed of the limiting inclined plates 4, the flange plates and the webs, can extrude and replace the mud or residual slag in the included angle position of the H-shaped steel 1, and thus the generation of internal leakage hole structural defects is reduced, and the strength of the diaphragm wall is improved.
[0013] The grouting pipe 5 is further connected with a steel plate 8, the steel plate 8 cooperates with the gap between the two limiting inclined plates 4 to realize positioning and insertion, and the end of the steel plate 8 is in contact with the steel cage 3 to realize the water-proof baffle between the internal frameworks, effectively prolong the leakage path of the seepage water, and play the corresponding water-blocking effect of the joint position.
[0014] The flange plate and the web plate on the other side of the H-shaped steel 1 are fixedly connected with the grouting pipes 5 at the position of the included angle, the outer periphery of the grouting pipe 5 is filled with the cement slurry layer 7, the flange plate on one side of the fixedly connected grouting pipe 5 is fixedly connected with the steel reinforcement cage 3, and the flange plate on one side of the inserted grouting pipe 5 is connected with the steel reinforcement cage 3 through the concrete. The structure is that one side of the H-shaped steel 1 is connected with the steel reinforcement cage 3, the H-shaped steel 1 and the steel reinforcement cage 3 can be placed into the forming groove as a continuous wall skeleton unit, the grouting pipe 5 on the inner side of the skeleton unit can be directly welded and connected, and the side surface of the H-shaped steel 1 on the outer side of the skeleton unit needs to be subjected to subsequent wall brushing operation, so that the subsequent skeleton unit can be placed. In order to make the cleaning between the outer flange plate and the web plate more clean, the limiting inclined plate 4 is arranged and the grouting pipe 5 is cooperatively inserted and installed.
[0015] When the structure is constructed, the several diaphragm wall forms are placed in the foundation pit, the steel reinforcement cage 3 with the H-shaped steel 1 is placed into the diaphragm wall form as a diaphragm wall skeleton, in the process of placing the diaphragm wall skeleton one by one, the mud on the outer side surface of the H-shaped steel 1 is cleaned by using a brush and other tools, and the grouting pipe 5 and the steel plate 8 are inserted into the position of the included angle in the limiting inclined plate 4. After the structure is installed, the concrete slurry is injected into the form to form the underground continuous wall 2 with the steel reinforcement cage 3, before the underground continuous wall 2 is hardened, the cement slurry is injected into the grouting pipe 5 to extrude the mud or residual slag at the position of the included angle of the flange plate and the web plate, fill the gap outside the grouting pipe 5 to form the cement slurry layer 7, so that the H-shaped steel 1 and the underground continuous wall 2 form a compact connection and an integral, and the underground continuous wall joint structure with better water stop effect is obtained after the form is removed. The construction sequence can be: placing the diaphragm wall steel reinforcement cage containing the H-shaped steel or brushing the wall of the formed groove---inserting the grouting steel pipe water stop steel plate structure in the limiting inclined plate 4, positioning---paving the diaphragm wall concrete---injecting the cement slurry into the grouting steel pipe under high pressure before the concrete is initially set---curing the concrete.
[0016] The H-shaped steel 1 is provided with two limiting inclined plates 4 at the corner position of one side of the H-shaped steel 1 as a joint structure between adjacent underground continuous walls 2, and the inner peripheral area of the H-shaped steel 1 can be divided into a space where a steel cage 3 is arranged outside the limiting inclined plate 4 and a space where a grouting pipe 5 is arranged inside the limiting inclined plate 4. For the inner peripheral surface of the H-shaped steel outside the limiting inclined plate 4, a relatively clean cleaning can be achieved by a brush, and as the internal space at the corner, cement slurry can be poured through the grouting pipe 5 to squeeze out the slurry or residual slag at the corner position of the flange plate and the web plate. Through the above construction operation, the slurry on the inner peripheral surface of the H-shaped steel 1 can be cleaned more cleanly, and the H-shaped steel 1 and the underground continuous wall 2 form a compact connection, avoiding structural gaps caused by the presence of slurry, and improving the waterproof performance of the overall underground continuous wall. For the H-shaped steel 1 inside the unit framework, since it is lowered together with the steel cage 3, the grouting pipe 5 on this side can be directly welded and fixed, without subsequent insertion and installation.
[0017] Injecting cement slurry before the underground continuous wall 2 hardens and solidifies is also beneficial to the mutual mixing of the cement slurry layer 7 and the underground continuous wall 2, and then curing, which can form a gap-free underground continuous wall structure between each other, thereby improving the waterproof performance of the underground continuous wall.
[0018] Further, in order to adapt the steel cage 3 to the H-shaped steel 1 with the limiting inclined plate 4, the steel cage 3 is provided with a bevel 9 on both sides near one end of the web plate of the H-shaped steel 1, the bevel 9 is consistent with the inclination angle of the limiting inclined plate 4, and the end of the steel plate 8 is in close contact with the bevel 9. The above structure can provide a certain position distance reference for the lowering of the steel cage 3, and the parallel arrangement of the limiting inclined plate 4 and the bevel 9 can also avoid collision interference during lowering to a certain extent. After the steel cage 3 is placed in the subsequent framework unit, it is also convenient to adjust the position of the steel cage 3 in the formwork, so as to ensure that the steel cage 3 is located at the middle position of the overall underground continuous wall 2, thereby providing the strength of the underground continuous wall.
[0019] Further, in order to improve the corrosion resistance and prolong the service life of the steel plate 8, a zinc plating layer 10 is coated on the outer surface of the steel plate 8.
[0020] Further, in order to facilitate the welding and fixation of the limiting inclined plate 4 on the H-shaped steel 1, the included angle between the limiting inclined plate 4 and the flange plate of the H-shaped steel 1 is 45 degrees, the distance between the limiting inclined plate 4 on the flange plate and the web plate is 5 cm, the gap width between the two limiting inclined plates 4 is 2-3 cm, and the gap between the steel plate 8 with the zinc plating layer 10 and the limiting inclined plate 4 is matched.
[0021] Further, after the wall brushing operation is completed, before the grouting pipe 5 is inserted, high pressure gas or high pressure water can be used to flush in the space formed by the limiting inclined plate 4, the web plate and the flange plate in the height direction, then the grouting pipe 5 is inserted, the concrete is poured to form the underground continuous wall, and before the concrete completely solidifies, the cement mortar is injected into the grouting pipe 5, the residual slurry or residual slag inside is extruded out, and the seepage channel of the internal space is blocked, corresponding leak stopping function is achieved, and the space formed by the limiting inclined plate 4, the web plate and the flange plate is extruded, compacted, replaced and reinforced.
[0022] The technical scheme of the utility model is not limited to the scope of the embodiments described in the utility model. The technical content not described in the utility model is well-known technology.
Claims
1. A structure for reinforcing the water-tightness of a joint of a diaphragm wall, characterized in that: The utility model provides a kind of underground continuous wall structure of H-shaped steel, including several H-shaped steels (1) arranged side by side, each H-shaped steel (1) is composed of flange plate on both sides and web between flange plate, underground continuous wall (2) is arranged between adjacent H-shaped steels (1), and steel reinforcement cage (3) is arranged in underground continuous wall (2), wherein the included angle position of the flange plate and web of H-shaped steel (1) side is provided with corresponding two limit inclined plates (4), and gap is left between two limit inclined plates (4), grouting pipe (5) is inserted and arranged vertically in the space formed by limit inclined plate (4), flange plate and web, grouting hole (6) is provided on the outer periphery of grouting pipe (5), cement slurry layer (7) is filled in the outer periphery of grouting pipe (5), cement slurry layer (7) is located in the space formed by limit inclined plate (4), flange plate and web, steel plate (8) is further connected on grouting pipe (5), steel plate (8) cooperates with the gap between two limit inclined plates (4), the end of steel plate (8) is in contact with steel reinforcement cage (3), grouting pipe (5) is fixedly connected at the included angle position of the flange plate and web of H-shaped steel (1) other side, cement slurry layer (7) is filled in the outer periphery of grouting pipe (5), the flange plate of grouting pipe (5) side is welded and fixedly connected with steel reinforcement cage (3), the flange plate of grouting pipe (5) side is inserted and connected with steel reinforcement cage (3) by concrete.
2. The structure for reinforcing the waterstop effect of the joint of the underground continuous wall according to claim 1, characterized in that: The two sides of steel reinforcement cage (3) close to the end of web of H-shaped steel (1) are each provided with bevel (9), and the inclination angle of bevel (9) is consistent with the inclination angle of limit inclined plate (4), and the end of steel plate (8) is in close contact with bevel (9).
3. The structure for reinforcing the joint waterstop effect of a diaphragm wall according to claim 1, characterized in that: Galvanized layer (10) is coated on the outer surface of steel plate (8).
4. The structure for reinforcing the joint waterstop effect of a diaphragm wall according to claim 1, characterized in that: The included angle between limit inclined plate (4) and flange plate of H-shaped steel (1) is 45 degrees, the distance between limit inclined plate (4) on flange plate and web is 5cm, and the gap width between two limit inclined plates (4) is 2-3cm.