CN217204017U

CN217204017U - Pre-buried grout structure of underground continuous wall framing department

Info

Publication number: CN217204017U
Application number: CN202122999463.1U
Authority: CN
Inventors: 聂柏松; 郭德昌; 黄维; 王鸿振
Original assignee: PowerChina Huadong Engineering Corp Ltd
Current assignee: PowerChina Huadong Engineering Corp Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-08-16
Anticipated expiration: 2031-11-30

Abstract

The utility model relates to a pre-buried grout structure of underground continuous wall framing department. The waterproof structure is suitable for underground building engineering. The utility model adopts the technical proposal that: the utility model provides a pre-buried grout structure of underground continuous wall framing department, has underground continuous wall and arranges in the inside interior headwall of underground continuous wall, its characterized in that: a plurality of grouting pipes are embedded in the lining wall and close to the contact surface between the lining wall and the underground continuous wall, grout outlets are formed in the grouting pipes at intervals and arranged corresponding to the framing positions of the underground continuous wall, a plurality of grout inlets are formed in the grouting pipes, and grouting treatment is performed on the void and opening positions of the framing positions of the underground continuous wall through the grout inlets. The utility model discloses a following the pre-buried grout pipe of underground continuous wall framing department, realized opening, the evacuation position of framing department and carried out the grout of comprehensive system, the grout scope is comprehensive, and the effect has prevented the risk of framing department seepage.

Description

Pre-buried grout structure of underground continuous wall framing department

Technical Field

The utility model relates to a pre-buried grout structure of underground continuous wall framing department. The waterproof structure is suitable for underground building engineering.

Background

The underground construction engineering usually adopts a 'two-wall-in-one' structure, namely, the underground continuous wall is used as a foundation pit enclosure structure during the construction period, and is permanently combined with a lining wall on the inner side of the underground continuous wall to be used as an underground structure outer wall, so that the investment is saved.

The underground continuous wall is cast in a framing manner, the framing position is a concrete vertical construction joint, the joint surface is often not tightly attached and opened, the joint surface is a natural impermeable weak position, meanwhile, the framing position is often not compact in casting vibration, and the seepage risk at the framing position is further increased.

The current common method is grouting outside the framing part of the underground continuous wall or grouting in a lining wall hole. The grouting amount of the grouting outside the underground continuous wall is large, and the investment is high; the construction of the lining wall during drilling and grouting is complex, and the wall surface is more attractive due to more drilled holes.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: aiming at the existing problems, the underground diaphragm wall framing pre-embedded grouting structure is simple and convenient to construct, does not affect the attractiveness of a wall body, aims at performing comprehensive system grouting on the opening and the void part of the framing part, and effectively prevents the risk of leakage of the framing part.

The utility model adopts the technical proposal that: the utility model provides an underground continuous wall framing department pre-buried grout structure, has underground continuous wall and arranges in the inside interior wall of underground continuous wall, its characterized in that: the underground diaphragm wall is characterized in that a plurality of grouting pipes are embedded in the lining wall and close to the contact surface between the lining wall and the underground diaphragm wall, grout outlets are formed in the grouting pipes at intervals and correspond to the framing positions of the underground diaphragm wall, a plurality of grout inlets are formed in the grouting pipes, and the grouting pipes are subjected to grouting treatment at the positions of separation positions of the underground diaphragm wall, such as a void and an opening position.

And the grout inlet of the grouting pipe is exposed out of the inner side of the inner lining wall.

And during grouting, pressurizing by grouting equipment, delivering grouting materials to the framing position of the underground continuous wall, and filling and compacting.

And after grouting is finished, plugging the grouting pipe.

The beneficial effects of the utility model are that: the utility model realizes the overall system grouting of the opening and the void part of the framing part through the grouting pipe pre-buried at the framing part along the underground continuous wall, the grouting range is overall, and the risk of leakage at the framing part is prevented; compared with the grouting scheme outside the underground diaphragm wall, the utility model has the advantages that the required grouting amount is small, and the investment is saved; compare with at inside lining wall drilling slip casting scheme, the utility model discloses a pre-buried grout pipe in inside lining wall advance the grout mouth direct grout, and seal the grout pipe after the grout is accomplished, construction convenience just does not influence the wall body pleasing to the eye.

Drawings

FIG. 1 is a longitudinal sectional view of the embodiment.

FIG. 2 is a cross-sectional view of an embodiment.

Fig. 3 is an elevation view of a grouting structure according to an embodiment.

In the figure: 1. an underground diaphragm wall; 2. lining the wall; 3. grouting pipes; 4. a pulp inlet; 5. a pulp outlet; 6. and (6) framing.

Detailed Description

As shown in fig. 1 to 3, the embodiment is an underground continuous wall framing pre-buried grouting structure, which includes an underground continuous wall 1 and a lining wall 2 poured inside the underground continuous wall 1, a grouting pipe 3 is pre-buried in the lining wall 2, the grouting pipe 3 is arranged along the framing position of the underground continuous wall 1 and is tightly attached to a contact surface between the lining wall 2 and the underground continuous wall 1, a grout inlet 4 of the grouting pipe 3 is exposed to the inside of the lining wall 2, grout outlets 5 are arranged at intervals of the grouting pipe 3 and are tightly attached to the framing position 6 of the underground continuous wall (actually, the surface of the underground continuous wall is uneven, and cannot be completely attached, and grouting grout particles are very small and can completely come out from a gap between the grout outlet and the underground continuous wall).

The construction steps of the embodiment are as follows: firstly, pouring an underground continuous wall 1, then pouring a lining wall 2, and embedding a grouting pipe 3 in the lining wall 2 when the lining wall 2 is poured; after the lining wall 2 is poured, grouting materials are pressurized and fed from a grout inlet 4 through grouting equipment, enter a void and open part at a framing part (parting part) of the underground continuous wall from a grout outlet 5 and are densely filled, so that the leakage risk of the part is reduced; and after grouting is finished, plugging the grouting pipe 3.

In the embodiment, in order to fill the gap and the opening of the framing part of the underground continuous wall, if the grouting pipe is far away from the underground continuous wall in the grouting process, the grouting pipe is surrounded by the concrete of the inner wall of the structure, so that the grouting grout cannot flow out and cannot reach the parting part of the underground continuous wall.

The present embodiment is mainly applicable to grouting in the following two cases: 1. quality problems such as under-vibration and the like occur during pouring, so that the hollow and open of the framing part of the underground continuous wall exist during pouring; 2 cracks may not occur until a period of time due to the concrete shrinkage cracking problem.

Claims

1. The utility model provides a pre-buried grout structure of underground continuous wall framing department, has underground continuous wall (1) and arranges in interior headwall (2) of underground continuous wall (1) inboard which characterized in that: interior, hug closely this interior wall of interior wall (2) with the contact surface pre-buried a plurality of grout pipes (3) of underground continuous wall (1), grout pipe (3) are gone up the interval and are provided with grout outlet (5), and this grout outlet corresponds underground continuous wall's framing department (6) are arranged, be equipped with a plurality of grout inlet (4) on grout pipe (3), it is right to advance the grout inlet through this underground continuous wall framing department's (6) the evacuation, open the position and carry out the grout and handle.

2. The underground continuous wall framing position pre-buried grouting structure of claim 1, characterized in that: and a grout inlet (4) of the grouting pipe (3) is exposed out of the inner side of the inner lining wall (2).