CN211006638U

CN211006638U - Prefabricated underground continuous wall

Info

Publication number: CN211006638U
Application number: CN201921751232.5U
Authority: CN
Inventors: 任贵生; 张艳芳
Original assignee: Beijing Geo Engineering Co
Current assignee: Beijing Geo Engineering Co
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-07-14
Anticipated expiration: 2029-10-18

Abstract

The utility model relates to a prefabricated fashioned underground continuous wall relates to building wall's technical field to the bottom is unstable appears in the construction easily in the underground continuous wall who solves among the prior art prefabricated shaping, produces easily and subsides technical problem. The method comprises the steps that a plurality of grouting pipes which are installed in a full-length mode are installed in the underground diaphragm wall, and the grouting pipes are grouted to avoid the settlement of the underground diaphragm wall. The utility model discloses be used for improving underground continuous wall's stability, satisfy people to the requirement of wall body safe handling.

Description

Prefabricated underground continuous wall

Technical Field

The utility model belongs to the technical field of building wall's technique and specifically relates to a prefabricated fashioned underground continuous wall.

Background

The underground continuous wall can be used in the fields of foundation pit support, water stop, foundation engineering and the like. A grooving machine is adopted on the ground, a long and narrow deep groove is dug along the peripheral axis of the deep excavation project under the condition of slurry wall protection, then the wall section is continuously hung, and a continuous reinforced concrete wall is built underground to be used as a structure for intercepting water, preventing seepage, bearing and retaining water. The prefabricated underground continuous wall section is prefabricated on the ground, the concrete quality can be guaranteed, maintenance is not needed after the concrete section is hung, the construction speed is high, and the integrity is good. The prior art is after underground wall installation, handles the wall seam of prefabricated wall, prevents the infiltration, and it causes the unstable wall body bottom easily, appears subsiding's problem easily.

In view of this, the present invention is especially provided.

SUMMERY OF THE UTILITY MODEL

The application provides a prefabricated underground continuous wall to the bottom is unstable appears in the construction easily to the underground continuous wall who solves among the prior art prefabricated and take shape, produces easily and subsides technical problem. The technical scheme of the scheme has a plurality of technical effects, which are shown below.

A plurality of grouting pipes which are installed in a full-length mode are installed in the underground continuous wall, and the grouting pipes are grouted to avoid the settlement of the underground continuous wall.

Optionally, a positioning element is arranged at the top end of the grouting pipe, and the positioning element is used for marking the position of the pipe orifice of the grouting pipe so as to facilitate grouting of the grouting pipe;

the positioning piece comprises a sleeve arranged at the top of the grouting pipe, the pipe opening of the sleeve is flush with the grouting pipe, the sleeve is filled with expansion materials, and the contact opening of the expansion materials and air forms a convex mark on the grouting pipe. The condition that a grouting opening is not easy to find after the wall is constructed is avoided, the operation effect is improved, and the labor cost is saved.

Optionally, the expandable material is a foam.

Optionally, the orifice of the casing is provided with a seal capable of preventing the intumescent material from coming into contact with air.

Optionally, an inclinometer pipe is further arranged in the continuous wall, and whether the wall body inclines or not can be judged through the inclinometer pipe.

Optionally, the side surface of the underground continuous wall is further provided with a through long groove, a porous grouting pipe is embedded in the through long groove, and grouting is performed on the porous grouting pipe to fill gaps between adjacent underground continuous walls

The beneficial effect that this application was sent is as follows:

through the grout pipe that sets up on the wall body, grout to the wall body, improve the stability of wall body bottom, strengthen the leakproofness of underground continuous wall joint department, effectively reduce the distance that the wall body subsides.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a prefabricated underground diaphragm wall of the present invention;

FIG. 2 is a schematic structural view of a positioning member in the prefabricated underground diaphragm wall of the present invention;

FIG. 3 is a top view of a pre-formed diaphragm wall of the present invention

FIG. 4 is the schematic structural diagram of the prefabricated underground diaphragm wall with porous grouting pipes of the utility model

Fig. 5 is a front view of the prefabricated underground continuous wall porous grouting pipe of the utility model.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.

Referring to fig. 1 to the prefabricated underground diaphragm wall, a plurality of grout pipes 1 installed in a through-length manner are installed in the wall body.

The prefabricated underground continuous wall adopts a grooving machine on the ground, a long and narrow deep groove is excavated along the peripheral axis of the deep excavation engineering under the condition of slurry wall protection, and then the prefabricated underground continuous wall is hung without maintenance, so that the construction speed is high, and the integrity is better. In order to enhance the sealing performance of the joint of the underground continuous wall, the wall body is grouted through the grouting pipe arranged on the wall body, the stability of the bottom of the wall body is improved, the sealing performance of the joint of the underground continuous wall is enhanced, and the settlement distance of the wall body is effectively reduced.

And (3) field construction:

1. the prefabricated underground continuous wall with grouting pipes is manufactured on the ground, the length and the width of the groove section are determined according to the site conditions of the foundation pit, and the grouting pipes are connected with reinforcing steel bars in the wall body in an overlapping mode.

2. Adopting a conventional method to carry out guide wall and grooving construction;

3. hoisting underground continuous wall groove sections in the sequence of firstly turning wall sections and then straight wall sections;

4. and after the plurality of adjacent two sections of wall panels are finished, grouting can be performed at the wall end and the wall side, the wall side grouting pipe is a plastic pipe or a steel pipe with a grouting hole on the side surface, and the wall end grouting pipe is a through long pipe and only discharges grouting at the bottom. The number of grouting pipes can be adjusted according to the shape of the wall, the wall thickness and the like.

Optionally, as shown in fig. 2, a positioning element is arranged at the top end of the grouting pipe 1, and the positioning element is used for marking the position of the pipe orifice of the grouting pipe, so that grouting of the grouting pipe is facilitated.

Further, the positioning member comprises a sleeve 2 arranged at the top of the grouting pipe, the opening of the sleeve is flush with the grouting pipe, and an expansion material layer 3 is filled in the sleeve, wherein the expansion material is foam rubber, and the expansion material and an air contact opening form a convex mark on the grouting pipe 1. Be equipped with the setting element on grout pipe 1 top to mark grout pipe 1 mouth of pipe position, be convenient for to grout pipe 1 grout, avoid after presetting diaphragm wall installation, inconvenient grout pipe mouth of pipe position of looking for.

Further, the opening of the casing is provided with a seal capable of preventing the expandable material from contacting air, and the seal is removed in use.

Optionally, an inclinometer 4 is further arranged in the continuous wall, and the horizontal deformation of each section of wall body can be detected through the inclinometer 4. Inclinometer tubes, for example, of the domestic common type: YT-CXG 70.

Optionally, as shown in fig. 4 and 5, the side surface of the underground continuous wall is further provided with a through-long groove, the through-long groove is embedded with the porous grouting pipe 5, and the through-long groove and the porous grouting pipe 5 are matched in shape. The gaps between the adjacent underground continuous walls are filled by grouting into the porous grouting pipes 5. Grouting is carried out through the porous grouting pipes 5, gaps between the walls are plugged, the walls are connected, the shearing resistance of the walls is improved, water is prevented from permeating the gaps between the walls, and the effect of sealing and stopping water is achieved.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.

Claims

1. The prefabricated underground continuous wall is characterized in that a plurality of grouting pipes which are installed in a full-length mode are installed in the underground continuous wall, and the grouting pipes are grouted to avoid the settlement of the underground continuous wall.

2. The underground continuous wall as claimed in claim 1, wherein a positioning member is arranged at the top end of the grouting pipe, and the positioning member is used for marking the position of the mouth of the grouting pipe so as to facilitate grouting of the grouting pipe;

the positioning piece comprises a sleeve arranged at the top of the grouting pipe, the pipe opening of the sleeve is flush with the grouting pipe, the sleeve is filled with expansion materials, and the contact opening of the expansion materials and air forms a convex mark on the grouting pipe.

3. The underground continuous wall of claim 2, wherein the intumescent material is foam.

4. Underground continuous wall according to claim 2 or 3, characterized in that the nozzles of the casing are provided with seals capable of preventing the intumescent material from coming into contact with air.

5. The underground continuous wall according to claim 1, wherein a inclinometer pipe is further arranged in the continuous wall, and the horizontal deformation of the continuous wall is detected through the inclinometer pipe.

6. The underground continuous wall as claimed in claim 1, wherein the side of the underground continuous wall is further provided with a through slot, a porous grouting pipe is embedded in the through slot, and grouting is performed on the porous grouting pipe to fill gaps between adjacent underground continuous walls.