CN218911368U - Double-skin assembled type grouting prevention structure of underground diaphragm wall - Google Patents

Abstract

The utility model provides a double-skin assembly type grouting preventing structure of an underground diaphragm wall, which comprises the following components: the bottom plate is arranged at the bottom between two skin walls of the double-skin assembled underground continuous wall with the cavity, and a plurality of flood prevention holes penetrating through the bottom plate are uniformly formed in the bottom plate. The utility model can prevent the slurry from being formed at the bottom of the assembled underground diaphragm wall and can improve the construction quality of the bottom of the assembled underground diaphragm wall.

Description

Double-skin assembled type grouting prevention structure of underground diaphragm wall

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to a double-skin assembled type grouting preventing structure of an underground continuous wall.

Background

The assembled underground diaphragm wall is a novel construction technology of foundation pit enclosure, in order to facilitate construction, the prior art adopts double-skin assembled diaphragm wall with a cavity in the middle for immersed construction, and after the diaphragm wall is installed in place, later concrete pouring is carried out in the cavity. The method has the defect that when the double-skin assembled underground diaphragm wall is used for casting concrete in situ in the cavity, slurry at the bottom of the wall body is easy to flood upwards, so that the quality of the concrete at the joint at the bottom of the wall body is influenced.

Disclosure of Invention

The utility model aims to provide a grouting-preventing structure of a double-skin assembled underground diaphragm wall, which aims to solve the problem that the bottom of the assembled underground diaphragm wall is grouted when concrete is poured in a cavity.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a double skin-fitted underground diaphragm wall anti-flood structure comprising:

the bottom plate is arranged at the bottom between two skin walls of the double-skin assembled underground continuous wall with the cavity, and a plurality of flood prevention holes penetrating through the bottom plate are uniformly formed in the bottom plate.

Further, the structure for preventing the grouting from the double-skin assembled underground diaphragm wall is provided, and the shape of the grouting preventing hole is rectangular.

Furthermore, the anti-grouting structure of the double-skin assembled underground diaphragm wall provided by the utility model has the advantage that the shape of the anti-grouting hole is round.

Further, the grouting preventing structure of the double-skin assembled underground diaphragm wall provided by the utility model has the advantage that the shape of the grouting preventing hole is regular polygon.

Furthermore, the double-skin assembled underground diaphragm wall structure for preventing the grouting from being overturned provided by the utility model has the advantage that the regular polygon is an equilateral triangle.

Further, the double-skin assembled underground diaphragm wall structure is capable of preventing the grouting from occurring, and the regular polygon is square.

Furthermore, the anti-grouting structure of the double-skin assembled underground diaphragm wall provided by the utility model has the advantage that the anti-grouting holes are distributed on the bottom plate in a rectangular mode.

Furthermore, the utility model provides a grouting-preventing structure of the double-skin assembled underground diaphragm wall, wherein the bottom plate is a concrete plate or a steel plate.

In order to solve the technical problems, the utility model provides another technical scheme as follows: a double skin-fitted underground diaphragm wall anti-flood structure comprising:

the steel bar net is arranged at the bottom between two skin walls of the double-skin assembled underground continuous wall with the cavity, and the steel wire net is provided with a steel wire net piece.

Further, the grouting preventing structure of the double-skin assembled underground diaphragm wall provided by the utility model is characterized in that the reinforcing mesh is a double-layer bidirectional reinforcing mesh or a single-layer unidirectional reinforcing mesh.

Compared with the prior art, the utility model has the following beneficial effects:

according to the anti-grouting structure of the double-skin assembled underground diaphragm wall, the bottom plate with the anti-grouting holes is arranged at the bottom between the two skin walls of the double-skin assembled underground diaphragm wall with the cavity, so that when concrete is poured into the cavity or the concrete at the bottom of the assembled underground diaphragm wall is upwards flushed, grouting at the bottom of the assembled underground diaphragm wall can be injected through the anti-grouting holes so as to form adhesion with bottom nodes, overflow from the bottom edge of the assembled underground diaphragm wall is avoided, and grouting phenomena such as mud flooding, sand flooding and the like at the bottom can be prevented.

According to the anti-grouting structure of the double-skin assembled underground diaphragm wall, the framework arranged at the bottom between the two skin walls of the double-skin assembled underground diaphragm wall with the cavity is formed through the reinforcing mesh, when concrete is poured in the cavity through meshes on the steel wire mesh or concrete at the bottom of the assembled underground diaphragm wall is upwards shone, grouting material at the bottom of the assembled underground diaphragm wall can be poured through the meshes of the steel wire mesh so as to form adhesion with bottom nodes, overflow from the bottom edge of the assembled underground diaphragm wall is avoided, and grouting phenomena such as mud flooding and sand flooding at the bottom can be prevented.

Drawings

FIG. 1 is a schematic view of a structure of a slurry flood prevention structure of a double skin fabricated underground diaphragm wall according to an embodiment;

FIG. 2 is a schematic view of a structure of a slurry flood prevention structure of a double skin fabricated underground diaphragm wall according to another embodiment;

the figure shows:

100. double-skin assembled underground continuous wall;

200. the grouting structure comprises a grouting prevention structure 210, a bottom plate 220, a flood prevention hole 230, a reinforcing mesh 240 and a steel wire mesh.

Detailed Description

The utility model is described in detail below with reference to the attached drawing figures: the advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.

Example 1

Referring to fig. 1, a dual-skin assembly type grouting structure 200 for underground diaphragm wall according to an embodiment of the utility model comprises:

the bottom plate 210 is arranged at the bottom between two skin walls of the double-skin assembly type underground diaphragm wall 100 with a cavity, and a plurality of flood prevention holes 220 penetrating through the bottom plate 210 are uniformly formed on the bottom plate 210. The double skin assembly type underground diaphragm wall 100 with a cavity therein includes a front skin wall 110, a rear skin wall 120, and hollow connectors therebetween, and the double skin assembly type underground diaphragm wall 100 may further include a lateral wall 130 and a water stop steel plate 140 disposed on the lateral wall 130 in order to improve a water stop effect. Wherein the base plate 210 may be a concrete slab or a steel plate. When the bottom plate 210 is a concrete slab, it can be prefabricated with a double skin wall. The thickness of the concrete slab can be 300mm, and when the bottom plate 210 is a concrete slab, the defect that the area of the steel plate is too large and deformation is generated can be avoided.

According to the anti-grouting structure 200 of the double-skin assembled underground diaphragm wall provided by the embodiment of the utility model, by arranging the bottom plate 210 with the anti-grouting holes 220 at the bottom between the two skin walls of the double-skin assembled underground diaphragm wall 100 with the cavity, when concrete is poured into the cavity or the concrete at the bottom of the assembled underground diaphragm wall 100 is shone upwards, the slurry at the bottom of the assembled underground diaphragm wall can be poured through the anti-grouting holes 220 so as to form adhesion with bottom nodes, and the slurry cannot overflow from the bottom edge of the assembled underground diaphragm wall, so that the grouting phenomena such as mud flooding, sand flooding and the like at the bottom can be prevented.

In order to improve the flood prevention effect, in the two-skin assembled underground diaphragm wall structure 200 according to the first embodiment of the present utility model, the flood prevention holes 220 may be arranged on the bottom plate 210 in a row and column rectangular distribution.

In order to achieve the purpose of preventing slurry from flowing out, in the first embodiment of the present utility model, the shape of the flood prevention hole 220 is a regular polygon such as rectangle, circle, equilateral triangle, square, etc. The regular polygon has the advantage of being convenient for manufacturing and processing.

Example two

Referring to fig. 2, a second embodiment of the present utility model provides a dual-skin assembly type grouting preventing structure 200 for underground diaphragm wall, comprising:

the steel reinforcement mesh 230 is arranged at the bottom between the two skin walls of the double-skin assembly type underground continuous wall 100 with the cavity, and the steel wire mesh 240 is arranged on the steel reinforcement mesh 230. Wherein the double skin-fitted underground diaphragm wall 100 is the same in structure as the first embodiment. In particular, the reinforcing mesh 230 may be composed of uniformly distributed longitudinal reinforcing anchored to the double skin wall, and a plurality of bar transverse reinforcing uniformly disposed on the longitudinal reinforcing.

In order to facilitate processing, in the anti-grouting structure 200 of the double-skin assembled underground diaphragm wall provided in the second embodiment of the present utility model, the reinforcement mesh 230 may be a single-layer unidirectional reinforcement mesh or a double-layer bidirectional reinforcement mesh. When the reinforcing mesh is a finished product, the efficiency of anchoring on the underground continuous wall can be improved. When the reinforcing mesh can be a double-layer bidirectional reinforcing mesh, the anchoring efficiency and the anchoring quality can be improved.

According to the anti-grouting structure 200 of the double-skin assembled underground diaphragm wall provided by the embodiment of the utility model, the framework arranged at the bottom between two skin walls of the double-skin assembled underground diaphragm wall 100 with the cavity is formed through the reinforcing mesh 230, and when concrete is poured into the cavity through meshes on the steel wire mesh 240 or concrete at the bottom of the assembled underground diaphragm wall 100 is shouldered upwards, slurry at the bottom of the assembled underground diaphragm wall 100 can be poured through the meshes of the steel wire mesh 240 to form adhesion with bottom nodes, and overflow from the bottom edge of the assembled underground diaphragm wall can be avoided, so that grouting phenomena such as mud flooding, sand flooding and the like at the bottom can be prevented.

The anti-grouting structure 200 of the double-skin assembly type underground diaphragm wall provided by the embodiment of the utility model can improve the construction quality of the bottom of the assembly type underground diaphragm wall through the anti-grouting structure 200.

The present utility model is not limited to the above-described embodiments, but rather, the above-described embodiments are merely examples of some, but not all embodiments of the present utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model. Other levels of modification and variation to the present utility model may occur to those skilled in the art. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims.

Claims (10)

1. The utility model provides a two skin assembly formula underground diaphragm wall prevent floods structure which characterized in that includes:

the bottom plate is arranged at the bottom between two skin walls of the double-skin assembled underground continuous wall with the cavity, and a plurality of flood prevention holes penetrating through the bottom plate are uniformly formed in the bottom plate.

2. The double-skin assembly type underground diaphragm wall structure of claim 1, wherein the shape of the flood-proof hole is rectangular.

3. The double skin assembly type underground diaphragm wall structure of claim 1, wherein the shape of the flood-proof hole is circular.

4. The double-skin assembly type underground diaphragm wall anti-flood structure according to claim 1, wherein the shape of the anti-flood hole is regular polygon.

5. The slurry flood prevention structure of a double skin fabricated underground diaphragm wall of claim 4, wherein the regular polygon is an equilateral triangle.

6. The slurry flood prevention structure of a double skin fabricated underground diaphragm wall of claim 4, wherein the regular polygon is square.

7. The double skin assembly type underground diaphragm wall structure for preventing flood according to claim 1, wherein the flood holes are rectangular and distributed on the bottom plate.

8. The double skin assembly type underground diaphragm wall anti-flood structure according to claim 1, wherein the bottom plate is a concrete plate or a steel plate.

9. The utility model provides a two skin assembly formula underground diaphragm wall prevent floods structure which characterized in that includes:

the steel bar net is arranged at the bottom between two skin walls of the double-skin assembled underground continuous wall with the cavity, and the steel wire net is provided with a steel wire net piece.

10. The grout-proof structure of double-skin assembly type underground diaphragm wall of claim 9, wherein the reinforcing mesh is a double-layer bidirectional reinforcing mesh or a single-layer unidirectional reinforcing mesh.

Images