CN219137639U - Underground diaphragm wall structure - Google Patents

Abstract

The utility model relates to an underground continuous wall structure. The technical scheme adopted by the utility model is as follows: the utility model provides an underground continuous wall structure, sets up in ground, its characterized in that: a continuous wall groove is formed in the ground, a plurality of prefabricated reinforcement cages are sequentially arranged in the continuous wall groove along the normal direction of the continuous wall groove, two adjacent prefabricated reinforcement cages are connected through a reinforcement cage connecting structure, and concrete slurry forming a reinforced concrete continuous wall with the prefabricated reinforcement cages is poured in the continuous wall groove; adjacent two prefabricated steel reinforcement cages are I order steel reinforcement cage and II order steel reinforcement cage respectively, steel reinforcement cage connection structure has steel and protects a section of thick bamboo and socket board, steel protects a section of thick bamboo fixed mounting and is connected with II order steel reinforcement cage on I order steel reinforcement cage tip department, socket board one end is fixed on II order steel reinforcement cage tip department of being connected with I order steel reinforcement cage, and the socket board other end stretches into steel and protects a section of thick bamboo, with steel and protect a section of thick bamboo cooperation through setting up on steel and protecting a section of thick bamboo with the reservation interface of socket board corresponding position department.

Description

Underground diaphragm wall structure

Technical Field

The utility model relates to an underground diaphragm wall structure and a construction method thereof. Is suitable for the technical field of building construction.

Background

Domestic large-scale hydroelectric engineering often faces serious challenges such as deep covering layer, steep inclination of bedrock surface, large structural load, obvious soft and hard stratum, high seepage prevention and impact resistance requirements, and the like, and is often required to be treated by adopting an underground continuous wall joint structure with high stress requirements. The rigid diaphragm wall joint can adapt to larger stress conditions. The general rigid underground diaphragm wall structure has the defects of huge joint box, secondary plug of the joint box, yi Kalong of two-sequence channel steel reinforcement cage, high hole cleaning difficulty at the joint and the like, and is difficult to meet the underground diaphragm wall structure requirement of high construction quality requirement and complex stress condition.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to solve the technical problems, the utility model provides a pluggable underground diaphragm wall structure and a construction method thereof.

The technical scheme adopted by the utility model is as follows: the utility model provides an underground continuous wall structure, sets up in ground, its characterized in that: a continuous wall groove is formed in the ground, a plurality of prefabricated reinforcement cages are sequentially arranged in the continuous wall groove along the normal direction of the continuous wall groove, two adjacent prefabricated reinforcement cages are connected through a reinforcement cage connecting structure, and concrete slurry forming a reinforced concrete continuous wall with the prefabricated reinforcement cages is poured in the continuous wall groove;

adjacent two prefabricated steel reinforcement cages are I order steel reinforcement cage and II order steel reinforcement cage respectively, steel reinforcement cage connection structure has steel and protects a section of thick bamboo and socket joint board, steel protects a section of thick bamboo fixed mounting and is connected with II order steel reinforcement cage on I order steel reinforcement cage tip department, socket joint board one end is fixed on II order steel reinforcement cage tip department of being connected with I order steel reinforcement cage, and the socket joint board other end stretches into steel and protects a section of thick bamboo, with steel protection a section of thick bamboo cooperation connection I order steel reinforcement cage and II order steel reinforcement cage through setting up on steel protection a reserved interface with socket joint board corresponding position department. Therefore, the socket board at the front end of the II-order reinforcement cage is inserted into the steel pile casing at the rear end of the I-order reinforcement cage, so that the socket board at the front end of the II-order reinforcement cage is matched with the steel pile casing at the rear end of the I-order reinforcement cage to realize connection of the I-order reinforcement cage and the II-order reinforcement cage. The construction steps of the underground diaphragm wall are greatly reduced, the working efficiency is improved, and good connection stability is kept between the I-order reinforcement cage and the II-order reinforcement cage.

The steel pile casing is provided with geotextile which is used for avoiding mud from entering the steel pile casing when the I-order reinforcement cage is arranged in the continuous wall groove and the inner wall of the continuous wall groove used for arranging the II-order reinforcement cage is cleaned. So, the mud that is in the II preface groove to the II preface steel reinforcement cage that needs to arrange is avoided in the II preface groove to excavate the in-process in the steel pile casing, leads to the fact the influence in the steel pile casing, and the in-process is pour concrete to II preface groove and steel pile casing in the follow-up needs to sweep the hole operation to avoid sweeping the hole operation and lead to the fact the damage to the rigid joint.

The geotextile is externally bonded with a dense-mesh wire netting, and the dense-mesh wire netting is connected with the steel casing through a plurality of steel ropes in a binding way. Therefore, the dense-mesh wire netting plays a good protection role on the geotextile, and can effectively avoid mud entering the steel casing caused by breakage of the geotextile in the construction process of the underground continuous wall. Through unreeling the cable wire, be convenient for take off geotechnique's fabric and dense mesh wire netting from steel pile casing to be convenient for follow-up pouring concrete in-process concrete to II preface inslot can enter into steel pile casing, realize I preface steel reinforcement cage and II preface steel reinforcement cage's fixed connection and the integrality of concrete placement in the underground diaphragm wall.

The steel pile casing is provided with an interface along the vertical direction, the socket board is H-shaped steel, one wing plate of the socket board is fixedly connected with the II-order reinforcement cage, the web plate of the socket board is matched with the interface, the other wing plate of the socket board extends into the steel pile casing, and the width of the wing plate extending into the steel pile casing on the socket board is larger than that of the interface on the steel pile casing. So, when advancing II preface steel reinforcement cage hoist and mount in II preface inslot, H shaped steel is followed II preface steel reinforcement cage and is followed from last to the lower removal, another pterygoid lamina on the H shaped steel is in steel pile casing internal downward movement, and web on the H shaped steel is in the interface downward movement, realizes H shaped steel and steel pile casing's connection through the cooperation of another pterygoid lamina on the H shaped steel and steel pile casing outer wall to reach I preface steel reinforcement cage and II preface steel reinforcement cage's connection.

The beneficial effects of the utility model are as follows: in the process of lifting the II-order reinforcement cage in the II-order groove, the outer side wing plate of the socket board fixedly arranged at the front end of the II-order reinforcement cage is inserted into the steel protection cylinder which is lifted at the end part of the I-order reinforcement cage in the I-order groove along with the lifting of the II-order reinforcement cage, so that the connection between the I-order reinforcement cage and the II-order reinforcement cage is realized. The geotextile arranged on the steel casing can effectively ensure that mud in the II-order groove enters the steel casing to form mud skin, so that the sweeping holes in the steel casing are avoided; the mud skin outside the steel casing can be effectively taken away by unwinding a steel cable binding the dense-mesh wire netting and the steel casing and removing the geotextile from the steel casing before hoisting the II-order reinforcement cage in the II-order groove, so that the hole sweeping procedure at the joint is reduced.

Drawings

Fig. 1 is a typical cross-sectional view of the present utility model.

In the figure: 1. a steel pile casing; 2. geotextile; 3. a wire rope; 4. an interface; 5. a socket board; 6. a sequence I groove; 7. i-sequence reinforcement cages; 8. II, a sequence groove; 9. II-order reinforcement cage.

Detailed Description

The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.

The embodiment is an underground diaphragm wall structure, as shown in fig. 1, and has diaphragm wall grooves formed in the ground, and prefabricated reinforcement cages are sequentially arranged in the diaphragm wall grooves along the longitudinal direction of the diaphragm wall grooves. Wherein, two adjacent prefabricated steel reinforcement cages are I order steel reinforcement cage 7 and II order steel reinforcement cage 9 respectively, install I order steel reinforcement cage 7 and II order steel reinforcement cage 9's continuous wall groove section respectively and be I order groove 6 and II order groove 8.

In this embodiment, the steel pile casing 1 that is arranged along vertical direction is fixedly installed in the tip department that is connected with II preface steel reinforcement cage 9 on the I preface steel reinforcement cage 7, has seted up interface 4 along vertical direction on the tip that is close with II preface steel reinforcement cage 9 on steel pile casing 1, interface 4 intercommunication steel pile casing 1 is inside and outside, interface 4 link up steel pile casing 1 upper and lower both ends.

In the embodiment, a socket board 5 is fixedly arranged at the end part connected with the II-order reinforcement cage 9 and the I-order reinforcement cage 7, and the socket board 5 is H-shaped steel. The socket board 5 comprises a web and wing plates respectively arranged at two sides of the web, the wing plates at one side of the socket board 5 are fixedly connected with the II-order reinforcement cage 9, the wing plates at the other side of the socket board 5 are used for being inserted into the steel pile casing 1 at the end part of the I-order reinforcement cage 7 when being hoisted into the II-order groove 8 along with the II-order reinforcement cage 9, the width of the wing plates extending into the steel pile casing 1 on the socket board 5 is larger than the width of the interface 4 on the steel pile casing 1, and the connection between the socket board 5 and the steel pile casing 1 is realized by the cooperation of the wing plates of the socket board 5 and the interface 4 of the steel pile casing 1, so that the connection between the I-order reinforcement cage 7 and the II-order reinforcement cage 9 is realized.

In this embodiment, the geotextile 2 is mounted on the steel casing 1, and the geotextile 2 needs to be removed from the steel casing 1 before the ii-order reinforcement cage 9 is hoisted into the ii-order tank 8. The geotextile 2 arranged on the steel pile casing 1 is externally paved with a dense-mesh wire netting, and the dense-mesh wire netting is connected with the steel pile casing 1 in a binding way through a plurality of steel ropes 3. So, when binding dense mesh wire netting and steel pile casing 1 through cable wire 3, can install geotechnique's fabric 2 on steel pile casing 1, can effectively avoid when excavation II preface inslot 8 mud enters into steel pile casing 1 through interface 4 on the steel pile casing 1 when 8 preface inslot, lead to need sweeping hole work to steel pile casing 1 earlier before pouring concrete to the continuous wall inslot. The dense-mesh wire netting paved outside the geotextile 2 plays a good role in protecting the geotextile 2, and can effectively avoid the geotextile 2 from being damaged in the construction process. When the II-order reinforcement cage 9 is required to be hoisted into the II-order groove 8, the geotextile 2 and the dense-mesh wire mesh are conveniently detached from the steel casing 1 by unwinding the steel cable 3 binding the dense-mesh wire mesh and the steel casing 1.

The construction method of the embodiment comprises the following steps:

digging an I-sequence groove 6 on the ground;

the I-sequence reinforcement cage 7 with one end fixedly connected with the steel casing 1 is hung in the I-sequence groove 6;

digging a II-sequence groove 8 at the end part of the I-sequence groove 6 along the arrangement direction of the underground diaphragm wall on the ground;

after the II-order groove 8 is excavated, unwinding a steel cable 3 bound between a dense-mesh wire netting and a steel casing 1 on the I-order reinforcement cage 7, and removing the dense-mesh wire netting and the geotextile 2 from the bottom of the steel casing 1;

a II-order reinforcement cage 9 with one end fixedly connected with a socket board 5 is hoisted in the II-order groove 8, and at the moment, one end of the socket board 5 stretches into the steel casing 1 and is connected with the I-order reinforcement cage 7 and the II-order reinforcement cage 9 in a matched manner through the steel casing 1;

and after the prefabricated reinforcement cages are sequentially installed in the continuous wall grooves, concrete materials are poured into the continuous wall grooves, and the construction of the underground continuous wall is completed.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (4)

1. The utility model provides an underground continuous wall structure, sets up in ground, its characterized in that: a continuous wall groove is formed in the ground, a plurality of prefabricated reinforcement cages are sequentially arranged in the continuous wall groove along the longitudinal direction of the continuous wall groove, two adjacent prefabricated reinforcement cages are connected through a reinforcement cage connecting structure, and concrete forming a reinforced concrete continuous wall with the prefabricated reinforcement cages is poured in the continuous wall groove;

adjacent two prefabricated steel reinforcement cages are I order steel reinforcement cage (7) and II order steel reinforcement cage (9) respectively, steel reinforcement cage connection structure has steel and protects section of thick bamboo (1) and socket board (5), steel protects section of thick bamboo (1) fixed mounting and is connected with II order steel reinforcement cage (9) on I order steel reinforcement cage (7) tip department, socket board (5) one end is fixed with I order steel reinforcement cage (7) tip department of being connected on II order steel reinforcement cage (9), and the socket board (5) other end is through setting up on steel protection section of thick bamboo (1) with socket board (5) corresponding position reservation interface (4) stretch into steel protection section of thick bamboo (1), with steel protection section of thick bamboo (1) cooperation connection I order steel reinforcement cage (7) and II order steel reinforcement cage (9).

2. The underground diaphragm wall structure of claim 1, wherein: the steel pile casing (1) is provided with a geotextile (2) which is used for avoiding mud from being adhered to the steel pile casing (1) when the I-order reinforcement cage (7) is arranged in the continuous wall groove and the inner wall of the continuous wall groove used for arranging the II-order reinforcement cage (9) is cleaned.

3. A diaphragm wall structure according to claim 2, wherein: the geotextile (2) is externally bonded with a dense-mesh wire netting, and the dense-mesh wire netting is connected with the steel casing (1) in a binding way through a plurality of steel ropes (3).

4. The underground diaphragm wall structure of claim 1, wherein: the steel pile casing (1) is provided with an interface (4) along the vertical direction, the socket board (5) is H-shaped steel, one wing plate of the socket board (5) is fixedly connected with the II-sequence reinforcement cage (9), the web plate of the socket board (5) is matched with the interface (4), and the other wing plate of the socket board (5) extends into the steel pile casing (1).

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