CN203613562U

CN203613562U - Flexible joint for underground continuous wall

Info

Publication number: CN203613562U
Application number: CN201320660583.1U
Authority: CN
Inventors: 侯新宇; 侯天宇
Original assignee: CITY VOCATIONAL COLLEGE OF JIANGSU
Current assignee: CITY VOCATIONAL COLLEGE OF JIANGSU
Priority date: 2013-10-24
Filing date: 2013-10-24
Publication date: 2014-05-28
Anticipated expiration: 2023-10-24

Abstract

The utility model relates to the technical field of geotechnical engineering and particularly relates to a flexible joint for an underground continuous wall. The flexible joint comprises a first underground continuous wall (1), a second underground continuous wall (2), a first steel reinforcement cage (3), a second steel reinforcement cage (4), a V-shaped joint plate (5), joint baffle guide grooves (6), a joint baffle (7) and grouting pipes (8), wherein the V-shaped joint plate (5) is connected to the joint end face of the first steel reinforcement cage (3), the joint baffle guide grooves (6) are connected to the outer sides of the two ends of the V-shaped joint plate (5) and are made from notched steel pipes, the joint baffle (7) is inserted into the baffle guide grooves (6), and concrete is cast into the first steel reinforcement cage (3), so as to form the first underground continuous wall (1); the joint end face of the second steel reinforcement cage (4) is connected with the first underground continuous wall (1), the joint baffle (7) is pulled out, and concrete is cast into the second steel reinforcement cage (4), so as to form the second underground continuous wall (2); the grouting pipes (8) are inserted into the joint baffle guide grooves (6).

Description

Flexible joint of underground continuous wall

Technical Field

The utility model relates to a geotechnical engineering technical field especially relates to an underground continuous wall flexible joint technique.

Background

Underground continuous walls are widely used in a large number of underground works as one of the most effective forms of foundation pit supporting structures. However, the construction process flow of the underground continuous wall is relatively complex, and inevitable construction joints exist in two longitudinally adjacent groove section units, so that the construction joints often become weak parts for resisting the pressure of ultra-deep water and soil. In the construction and use process, the joint should meet the requirements of stress and seepage resistance (ensuring the seepage resistance and integrity of the wall body), and strives for simple construction and no difficulty in grooving of the next unit groove section.

Common joint modes for underground continuous wall construction include a direct connection joint, a latch pipe joint, a joint box joint, a prefabricated part joint and the like. Among various joint modes, the flexible joint of the fore shaft pipe has simple construction, low manufacturing cost and wider application. However, unavoidable deviation exists in the construction process, such as grooving perpendicularity, reinforcing cage hoisting deviation, incomplete wall brushing and other factors, which often cause the phenomena of mud clamping, slurry leakage and the like of joints in the wall construction process, and in the foundation pit excavation process, the phenomena of insufficient joint strength, water leakage, poor integrity of wall pieces and the like are shown. Seriously affecting the construction and use of underground structures.

Disclosure of Invention

The technical problem is as follows: an object of the utility model is to provide an underground continuous wall flexible joint adopts a V type to connect the integrated configuration of board and joint baffle, and structural style is simple need not hasp pipe, wall connection inseparabler, the swift reduction of erection time of construction. Compared with the traditional construction process of the locking pipe, the lateral rigidity and the water stopping performance of the flexible joint of the underground continuous wall can be effectively improved.

The technical scheme is as follows: the utility model discloses a V type joint plate need not the hasp pipe with the combination construction methods who connects the baffle, and wall connection is inseparabler, reduction of erection time simultaneously.

The utility model discloses a flexible joint of an underground continuous wall, which comprises a first underground continuous wall; a second underground diaphragm wall; a first reinforcement cage; a second reinforcement cage; a V-shaped joint plate; a connector baffle guide slot; a joint baffle; a grouting pipe; wherein,

the V-shaped joint plate is connected to the joint end face of the first reinforcement cage, the outer sides of two ends of the V-shaped joint plate are connected with joint baffle guide grooves, the joint baffle guide grooves are composed of cut steel pipes, the joint baffles are inserted into the baffle guide grooves, and concrete is poured into the first reinforcement cage to form a first underground continuous wall;

the joint end surface of the second reinforcement cage is connected with the first underground continuous wall, the joint baffle plate is pulled out, and concrete is poured in the second reinforcement cage to form a second underground continuous wall;

inserting a special grouting pipe into the guide groove of the joint baffle.

Has the advantages that: the utility model adopts the above technical scheme, compare with prior art and possess following advantage: the utility model discloses a V type joint plate and combination construction mode who connects the baffle need not hasp pipe technology and reduces the construction period reduction, need not to connect the brush wall and make wall body joint combine more firm, between the wall body V type joint plate connect more closely, more can effectively improve flexible joint's lateral rigidity and stagnant water performance than traditional hasp pipe construction technology. The V-shaped joint plate and the joint baffle are simple to manufacture and convenient to construct, the joint baffle can be used for multiple times, and the construction is pollution-free to the environment.

Drawings

FIG. 1: underground continuous wall flexible joint plane schematic diagram I

FIG. 2: underground continuous wall flexible joint plane schematic diagram II

FIG. 3: underground continuous wall flexible joint plane schematic diagram III

The above figures include: a first underground diaphragm wall 1; a second underground continuous wall 2; a first reinforcement cage 3; a second reinforcement cage 4; a V-joint plate 5; a joint baffle guide groove 6; a joint baffle 7; and a grouting pipe 8.

Detailed Description

The technical scheme of the present invention is explained in detail below with reference to the accompanying drawings 1 and 2:

the utility model discloses a flexible joint technology of an underground diaphragm wall, which comprises a first underground diaphragm wall 1; a second underground continuous wall 2; a first reinforcement cage 3; a second reinforcement cage 4; a V-joint plate 5; a joint baffle guide groove 6; a joint baffle 7; and a grouting pipe 8.

As shown in fig. 1, fig. 2 and fig. 3, the utility model discloses a flexible joint technology for underground continuous wall, the V-shaped joint plate 5 is welded on the female side of the reinforcement cage 3, the joint baffle guide slot 6 is welded outside the two ends of the V-shaped joint plate 5 (the joint baffle guide slot 6 is composed of a cut steel pipe), the joint baffle 7 is inserted into the baffle guide slot 6 along one side of the short side of the first reinforcement cage 3, and then is put down into the groove section together, and the first underground continuous wall 1 is formed by pouring concrete; and after the groove section close to the second underground continuous wall 2 is excavated, the joint baffle 7 is pulled out, the second reinforcement cage 4 manufactured by the above process is put down, and concrete is poured to form the second underground continuous wall 2. If the joint part needs to be reinforced, the special grouting pipe 8 can be inserted into the joint baffle guide groove 6 after the joint baffle 7 is pulled out, and after the second underground continuous wall 2 is poured and the concrete strength reaches 70% of the designed strength, the rubber film in the special grouting pipe 8 is pulled out to perform high-pressure grouting reinforcement on the second underground continuous wall.

Claims

1. A flexible joint for underground diaphragm walls, characterized in that it comprises a first underground diaphragm wall (1); a second underground continuous wall (2); a first reinforcement cage (3); a second reinforcement cage (4); a V-joint plate (5); a joint baffle guide groove (6); a joint baffle (7); a grouting pipe (8); wherein,

the V-shaped joint plate (5) is connected to the joint end face of the first reinforcement cage (3), the outer sides of two ends of the V-shaped joint plate (5) are connected with joint baffle guide grooves (6), the joint baffle guide grooves (6) are composed of cut steel pipes, the joint baffles (7) are inserted into the baffle guide grooves (6), and the first reinforcement cage (3) is located in the first underground continuous wall (1);

the joint end surface of the second reinforcement cage (4) is connected with the first underground continuous wall (1), and the second reinforcement cage (4) is positioned in the second underground continuous wall (2);

a special grouting pipe (8) is inserted into the joint baffle guide groove (6).