CN220364980U

CN220364980U - Steel connecting piece of underground diaphragm wall and underground diaphragm wall

Info

Publication number: CN220364980U
Application number: CN202321957831.9U
Authority: CN
Inventors: 杨高平; 程海军; 曾鹏; 祝升; 程年焱; 杨小强
Original assignee: Wuhan Shengshirui Construction Engineering Co ltd
Current assignee: Wuhan Shengshirui Construction Engineering Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2024-01-19
Anticipated expiration: 2033-07-24

Abstract

The utility model relates to an underground foundation construction technical field that is relevant specifically discloses a steel connecting piece and underground diaphragm wall of underground diaphragm wall, and it includes the interface board, is formed with the cavity that supplies concrete placement between two interface boards, the steel reinforcement cage has been placed in the cavity, be connected with the dowel on the steel reinforcement cage, the dowel is outwards protruded in the steel reinforcement cage side along the length direction of steel reinforcement cage, correspond both sides on the interface board the steel reinforcement cage all is provided with the confession dowel male socket. The continuous wall connecting structure has the advantages that the connecting surface between continuous walls poured successively after molding is stable, and the detachment phenomenon is not easy to occur.

Description

Steel connecting piece of underground diaphragm wall and underground diaphragm wall

Technical Field

The application relates to the technical field of underground foundation construction, in particular to a steel connecting piece of an underground diaphragm wall and the underground diaphragm wall.

Background

And (3) grooving by using a grooving machine, a grooving machine or pile hole equipment, pouring a guide wall on the notch, dividing the wall sections, pouring a section of concrete wall according to the 4-6 m groove sections, and pouring concrete adjacent to another groove section in the same procedure to obtain the continuous wall.

Because the concrete is cast in sections, the concrete cast in sequence is better connected to improve the integral strength of the continuous wall, when the adjacent concrete walls are connected, a guide pillar (model column) is used as a mould of the side end of the wall, the side end of the concrete cast first is cast to form an arc shape attached to the peripheral wall of the column, and the arc peripheral wall of the end can be used as a template for supporting when the next section of concrete construction is carried out, so that the engagement performance of the concrete cast is improved, the connecting area between the two concrete walls is increased, and the strength is higher.

However, when the cylinder is used as an end template for pouring, the cylinder is shielded, so that the fusion degree and the integration between two sections of concrete are not high, the two sections of concrete are not connected in a penetrating way, once the two sections of concrete are cracked by a gap of a connecting surface, after water flow seeps inwards, the two sections of continuous walls can be separated or have other potential safety hazards, and therefore, the connection of the joints of the two sections of concrete walls poured successively is to be reinforced.

Disclosure of Invention

In order to improve the connection performance between two sections of continuous walls constructed successively and enable the connection strength to be higher, the application provides a steel connecting piece of an underground continuous wall and the underground continuous wall.

The application provides a steel connecting piece of underground diaphragm wall and underground diaphragm wall adopts following technical scheme:

in a first aspect of the present application, a steel connector for a diaphragm wall is provided.

The utility model provides a steel connecting piece of underground diaphragm wall, includes the interface board, is formed with the cavity that supplies concrete placement between two interface boards, the steel reinforcement cage has been placed in the cavity, be connected with the dowel on the steel reinforcement cage, the dowel along the length direction evagination of steel reinforcement cage in the steel reinforcement cage side, correspond both sides on the interface board the steel reinforcement cage all is provided with the confession dowel male socket.

Through adopting above-mentioned technical scheme, when pouring the diaphragm wall to the interface board is as linking, and the dowel on the adjacent steel reinforcement cage can all insert in the socket, thereby two steel reinforcement cages link together through the interface board, and the interface board restricts the motion of steel reinforcement cage along diaphragm wall thickness direction, finally makes the junction surface between the diaphragm wall that the shaping was followed pouring firm, is difficult for appearing breaking away from the phenomenon.

Optionally, the interface board is i-steel and comprises two transverse boards opposite to each other and a longitudinal board vertically fixedly connected with the two transverse boards;

the two transverse plates and the longitudinal plates form two concave cavities for placing the ends of the reinforcement cage.

Through adopting above-mentioned technical scheme, because the I-steel is formed with the cavity that suits with the steel reinforcement cage along diaphragm both sides, in the cavity can be blocked to the head of steel reinforcement cage, the longitudinal plate restriction steel reinforcement cage moves along its length direction, and the motion of two diaphragm restriction steel reinforcement cages along its thickness direction finally makes the position of steel reinforcement cage more fixed, and connection stability is higher.

Optionally, the interface board is fixed with the limiting plate on the face of its two diaphragm that deviate from each other, the socket set up in on the limiting plate just the socket is followed the direction of height of steel reinforcement cage extends and runs through the limiting plate.

By adopting the technical scheme, the socket is arranged on the limiting plate, and the limiting plate is connected to the longitudinal plate, so that the hardness of the longitudinal plate cannot be influenced by the arrangement of the socket, and the whole interface plate has higher connection strength.

Optionally, a fixing piece is disposed on the interface board, and the interface board is detachably connected with the fixing piece.

Optionally, the mounting sets up to the split bolt, the split bolt include from two limiting plate reaches the round steel bolt that the longitudinal plate was worn out, with the spacer nut of round steel bolt both ends screw thread adaptation.

Through adopting above-mentioned technical scheme, using the split bolt, the external diameter of two stop nuts is greater than round steel bolt, and stop nut stands out in the limiting plate face and in deep cavity, during follow-up concrete placement, extends inside the concrete layer through stop nut for the interface board is more firm in concrete layer's connection, and fixed effect is better.

Optionally, the interface board can be followed the thickness direction of continuous wall sets up a plurality ofly, and the diaphragm of a plurality of interface boards passes through fastener fixed connection.

By adopting the technical scheme, when the thickness of the continuous wall to be poured is changed, the number of the interface plates is correspondingly changed, so that the concrete pouring and connection method meets and is suitable for pouring concrete with different thicknesses

Optionally, the wall surface of the limiting plate far away from the longitudinal plate takes the socket as a central line and gradually inclines towards the direction far away from the longitudinal plate;

concave-convex structures are arranged on the inclined wall surfaces of the limiting plates.

Through adopting above-mentioned technical scheme, limiting plate slope sets up, also follows the direction of reinforcement cage to limiting plate promptly, and the limiting plate has certain receipts and closes the effect, and concave-convex structure on its face of cooperation simultaneously can form crisscross interlock with concrete layer for concrete layer is difficult to drop from the limiting plate face.

Optionally, a rubber strip for blocking the infiltration of water flow is fixedly connected to the side wall of the transverse plate.

Through adopting above-mentioned technical scheme, the rubber strip is pressed deformation, can be better with gap filling for the effect that blocks water is better.

A second aspect of the present application provides an underground diaphragm wall, which is fixedly supported by the connecting member and is manufactured by casting concrete, hardening and curing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the continuous wall is poured, the interface plates are used for connection, and the dowel bars on the adjacent reinforcement cages can be inserted into the sockets, so that the two reinforcement cages are connected through the interface plates, the interface plates limit the movement of the reinforcement cages along the thickness direction of the continuous wall, and finally the formed continuous wall connection surface is stable and is not easy to break away;

2. the socket is arranged on the limiting plate, and the limiting plate is connected to the longitudinal plate, so that the hardness of the longitudinal plate cannot be affected by the arrangement of the socket, and the whole interface plate has higher connection strength;

3. when the thickness of the continuous wall to be poured is changed, the number of the interface plates is changed correspondingly, so that the concrete pouring and connection of the concrete with different thicknesses are met and adapted.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a continuous wall according to an embodiment of the present application;

FIG. 2 is a schematic view of a steel connection in an embodiment of the present application;

FIG. 3 is a schematic structural view of an interface board in a steel connector according to an embodiment of the present application;

FIG. 4 is a schematic view of the structure of the joints between adjacent continuous walls of different thickness according to the embodiment of the present application.

Reference numerals: 1. an interface board; 10. a cavity; 11. a cross plate; 111. a rubber strip; 12. a longitudinal plate; 13. a cavity; 2. a reinforcement cage; 21. a dowel bar; 3. a limiting plate; 31. a socket; 4. a split bolt; 41. round steel bolts; 42. a limit nut; 5. a continuous wall.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a steel connecting piece of an underground diaphragm wall and the underground diaphragm wall 5.

Referring to fig. 1 and 2, a steel connector for an underground diaphragm wall, the connector comprises a connector board 1, the two ends corresponding to the diaphragm wall 5 are respectively provided with the connector board 1, a cavity 10 for concrete pouring is formed between the two connector boards 1, a reinforcement cage 2 is hoisted and placed in the cavity 10, a dowel bar 21 is connected to the reinforcement cage 2, the dowel bar 21 protrudes outwards along the length direction of the reinforcement cage 2 by a distance from one end of the side surface of the reinforcement cage 2, and sockets 31 for inserting the dowel bar 21 are respectively arranged on the connector board 1 corresponding to the reinforcement cages 2 at two sides.

Referring to fig. 3 and 4, the interface board 1 is i-steel, and comprises two opposite transverse boards 11 and a longitudinal board 12 vertically fixedly connected with the two transverse boards 11, and the interface board 1 is formed with two concave cavities 13 for placing the ends of the reinforcement cage 2.

The jack 31 can be opened on the opposite facing away wall surfaces of the longitudinal plate 12, but in consideration of the thickness of the jack 31, which can reduce the thickness of the interface plate 1, in order to improve the stability of the interface plate 1, in the present application, the interface plate 1 is fixed with a limiting plate 3 on the plate surfaces of the two transverse plates 11 facing away from each other, the jack 31 is opened on the limiting plate 3, and the jack 31 extends along the height direction of the reinforcement cage 2 and penetrates through the limiting plate 3.

When the reinforcement cage 2 is suspended, the dowel 21 is inserted and slid down along the opening of the insertion opening 31, so that the dowel does not interfere with the limiting plate 3.

In order to further improve the engagement effect between the limiting plate 3 and the end part of the reinforcement cage 2, along the thickness direction of the continuous wall 5, the wall surface of the limiting plate 3 far away from the longitudinal plate 12 is inclined gradually towards the direction far away from the longitudinal plate 12 by taking the socket 31 as a central line, and an uneven structure (not shown) is arranged on the inclined wall surface of the limiting plate 3, wherein the uneven structure can be a punctiform or strip-shaped bulge formed by spot welding, and can also be a plurality of grooves formed on the wall surface, so that the uneven structure on the plate surface can form staggered engagement with a concrete layer, and the concrete layer is difficult to fall off from the plate surface of the limiting plate 3.

The water stop strips such as BN water stop rubber strips 111 can be fixed at some connecting joints, and the rubber strips 111 used for blocking water flow infiltration are fixedly connected to the side walls of the transverse plates 11 in the application, and the rubber strips 111 can seal gaps when the templates are put together, so that the possibility of concrete slurry leakage is reduced.

The fixing manner of the limiting plate 3 and the socket 31 plate can be welding or fixing connection by using other fixing pieces. The interface board 1 is provided with a fixing piece for fixing the limiting plate 3, the fixing piece is a split bolt 4, and the split bolt 4 comprises round steel bolts 41 penetrating out from the two limiting plates 3 and the longitudinal plate 12 and limiting nuts 42 in threaded fit with two end parts of the round steel bolts 41.

Therefore, the split bolt 4 is used, the outer diameters of the two limiting nuts 42 are larger than the round steel bolt 41, the limiting nuts 42 protrude out of the surface of the limiting plate 3 and penetrate into the concave cavity 13, and when the follow-up concrete pouring is performed, the limiting nuts 42 extend into the concrete layer, so that the connection of the interface plate 1 on the concrete layer is more stable, and the fixing effect is better.

Correspondingly, through holes for the round steel bolts 41 to penetrate out are formed in the limiting plate 3 and the middle longitudinal plate 12, and a circle of rubber layers can be fixedly filled on the inner walls of the through holes in order to improve the sealing performance of the through holes.

In some embodiments, because the thickness of the continuous wall 5 varies, the interface boards 1 may be disposed along the thickness direction of the continuous wall 5, and the cross boards 11 of the plurality of interface boards 1 are fixedly connected by fasteners, where the fasteners may be implemented by split bolts 4 or ordinary bolts.

The second aspect of the present application also provides a continuous wall 5, the continuous wall 5 being made by forming a fixed support inside a connector and casting concrete for curing.

The implementation principle of the steel connecting piece of the underground diaphragm wall and the underground diaphragm wall of the embodiment of the application is as follows: when the continuous wall 5 is poured, the interface plates 1 are used for connection, the dowel bars 21 on the adjacent reinforcement cages 2 can be inserted into the insertion holes 31, so that the two reinforcement cages 2 are connected through the interface plates 1, the interface plates 1 limit the movement of the reinforcement cages 2 along the thickness direction of the continuous wall 5, the fusion degree and the integration of two sections of concrete poured successively are high, and the two sections of concrete are connected in a penetrating way, so that the connection surface of the formed continuous wall 5 is stable, and the separation is not easy to occur.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," "third," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. The terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

The foregoing are all optional embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A steel connecting piece of underground diaphragm wall, its characterized in that: including interface board (1), be formed with between two interface boards (1) and supply cavity (10) of concrete placement, steel reinforcement cage (2) have been placed in cavity (10), be connected with joint bar (21) on steel reinforcement cage (2), joint bar (21) along the length direction evagination of steel reinforcement cage (2) in steel reinforcement cage (2) side, correspond both sides on interface board (1) steel reinforcement cage (2) all are provided with the confession joint bar (21) male socket (31).

2. The steel connector for underground diaphragm wall according to claim 1, wherein: the interface board (1) is I-steel and comprises two transverse boards (11) opposite in position and a longitudinal board (12) vertically fixedly connected with the two transverse boards (11);

the two transverse plates (11) and the longitudinal plates (12) are provided with two concave cavities (13) for placing the ends of the reinforcement cage (2).

3. The steel connector for underground diaphragm wall according to claim 2, wherein: the interface board (1) is fixed with limiting plates (3) on the faces of two transverse plates (11) deviating from each other, the socket (31) is arranged on the limiting plates (3) and the socket (31) extends along the height direction of the reinforcement cage (2) and penetrates through the limiting plates (3).

4. A steel connector for underground diaphragm walls according to claim 3, wherein: the interface board (1) is provided with a fixing piece, and the interface board (1) is detachably connected with the fixing piece.

5. The steel connector for underground diaphragm wall according to claim 4, wherein: the fixing piece is arranged to be a split bolt (4), and the split bolt (4) comprises round steel bolts (41) penetrating out from the two limiting plates (3) and the longitudinal plates (12) and limiting nuts (42) in threaded fit with two end parts of the round steel bolts (41).

6. The steel connector for underground diaphragm wall according to claim 2, wherein: the interface boards (1) can be arranged in a plurality along the thickness direction of the continuous wall (5), and the transverse boards (11) of the plurality of interface boards (1) are fixedly connected through fasteners.

7. A steel connector for underground diaphragm walls according to claim 3, wherein: along the thickness direction of the continuous wall (5), the wall surface of the limiting plate (3) far away from the longitudinal plate (12) is gradually inclined towards the direction far away from the longitudinal plate (12) by taking the socket (31) as a central line;

the inclined wall surface of the limiting plate (3) is provided with a concave-convex structure.

8. The steel connector for underground diaphragm wall according to claim 2, wherein: the side wall of the transverse plate (11) is fixedly connected with a rubber strip (111) for blocking the infiltration of water flow.

9. An underground diaphragm wall, characterized in that: comprising a steel connection according to any one of claims 1-8.