CN218540720U - Deep foundation pit prestress combined steel support - Google Patents

Abstract

The utility model discloses a prestressed composite steel support for deep foundation pits, which comprises a support plate acting on the inner wall of the foundation pit, a locking structure connected between the adjacent support plates, and a support plate assembled on the left and right sides. The strut structure between the locking structures, the strut structure is provided with two front and rear strut structures, a tightening member is fitted between the two strut structures, and the two strut structures are under the action of the tightening member close to each other, and apply pressure to the locking structure when they are close together; the device can realize the internal support of the foundation pit, and can also avoid the front and rear misalignment of the support plate.

Description

Prestressed combined steel support for deep foundation pit

technical field

The utility model relates to a deep foundation pit prestressed combined steel support.

Background technique

In the construction of the support system of deep foundation pits, the traditional construction method is to use a pile driver to drive the support plate into the ground, and protect it at the inner wall of the foundation pit, and then assemble it between multiple support plates on the same side Cross bar, the steel rod is welded on the surface of the support plate, the steel rod is supported at the bottom of the cross bar, and then the support rod is assembled between the opposite cross bars, and the support bar acts on the cross bar, and then acts on the cross bar through the cross bar. The support plate realizes the strengthening of the inner wall of the foundation pit and reduces the probability of collapse.

However, we found in the actual installation that the support system of this installation structure has poor connection strength between the support plates, and the front and rear misalignment between adjacent support plates is easy, resulting in a decrease in the protection capability.

For this reason, we designed a deep foundation pit prestressed composite steel support that can realize the internal support of the foundation pit and avoid the front and rear misalignment of the support plate.

Utility model content

The technical problem to be solved by the utility model is to provide a deep foundation pit prestressed combined steel support which can realize the internal support of the foundation pit and can also avoid the front and rear dislocation of the support plate.

In order to solve the above problems, the utility model adopts the following technical solutions:

A prestressed combined steel support for a deep foundation pit, including a support plate acting on the inner wall of the foundation pit, and a locking structure connected between adjacent support plates, and assembled between the locking structures on the left and right sides The strut structure is provided with two front and rear strut structures, and a tightening member is fitted between the two strut structures, and the two strut structures are moved closer to each other under the action of the tightening member. Apply pressure to the locking structure.

Preferably, the support plate includes a plate body, the two ends of the plate body are bent to form a connecting portion, and adjacent connecting portions are spliced to form a T-shape, and a wedge is arranged inside the connecting portion, the The thickness of the wedge gradually increases downwards, and the locking structure cooperates with the connecting portion and is limited by the wedge.

Preferably, the locking structure includes a body, and the side of the body facing the board is provided with a T-shaped fitting groove, and the adjacent connecting parts are spliced and fitted into the fitting groove, and the When the body moves down, the wedge is wedged into the assembly groove, and forms a limit to the downward movement of the body; the body has two symmetrical action slopes, through which the action slopes cooperate with the support pole structure.

Using the assembly groove to cooperate with the connecting part can avoid the front and rear dislocation of adjacent support plates, and the downward movement of the body can be limited by the wedge, and the height can be fixed by the effect of gravity.

Preferably, the strut structure includes a support rod, a pulley seat is installed at both ends of the support rod, a pulley is fitted through the pulley seat, the pulley has a pulley groove, and the action slope acts on the pulley groove Inside, the support rod is provided with fitting holes near both ends for fitting the tightening member.

In the above technical solution, the support rods on the front and rear sides are tightened by the tightening member, and the fastening force is generated by the sliding of the pulley against the action slope, which realizes effective support for the support plates on both sides, and the whole connection has no rear Welded structure to avoid the risk of desoldering and dropping.

Preferably, the tightening member includes a rod, and screw parts are processed at both ends of the rod, and a sleeve is fitted after the screw part passes through the assembly hole, and the end of the sleeve is far away from the support rod A polygonal force-bearing part is set at .

In the above technical solution, by rotating the sleeve, the sleeve is pushed into the front and rear support rods to realize the tightening of the front and rear support rods.

The beneficial effects of the utility model are: the device adopts a locking structure to connect adjacent support plates, avoids the front and rear misalignment of adjacent support plates, ensures effective support for the inner wall of the foundation pit, and can tighten the front and rear through the tightening member The side strut structure, even if there is an error in the installation width of the left and right adjacent support plates, the adjustable strut structure can still be used to achieve top tightness, increasing the stability and reliability of the entire support structure, which is suitable for popularization and use.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the utility model;

Figure 2 is a partial enlarged view of A;

Figure 3 is a top view of the support plate;

Fig. 4 is the side view of wedge;

Figure 5 is a top view of the locking structure;

Figure 6 is a front view of the strut structure.

Detailed ways

All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end The orientation or positional relationship indicated by "part", "length", "outer end", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, in the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise clearly specified and limited, terms such as "setting", "socketing", "connecting", "through", and "inserting" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the mutual connection of two components Functional relationship, unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Referring to Fig. 1 to Fig. 6, a deep foundation pit prestressed composite steel support includes support plates 1 acting on the inner wall of the foundation pit, and locking structures 2 connected between adjacent support plates 1 , and the strut structure 3 assembled between the locking structures 1 on the left and right sides, the strut structure 3 is provided with two front and rear strut structures 3, and a tightening member 4 is matched between the two strut structures 3, and the two strut structures 3 are equipped with a tightening member 4. The strut structures 3 are moved closer to each other under the action of the tightening member 4, and exert pressure on the locking structure 2 when they are moved closer.

In a preferred embodiment of the present utility model, the support plate 1 includes a plate body 11, the two ends of the plate body 11 are bent to form a connecting portion 12, and adjacent connecting portions 12 are spliced to form a T-shape. A wedge 13 is arranged inside the connecting portion 12 , and the thickness of the wedge 13 gradually increases downwards. The locking structure 2 cooperates with the connecting portion 12 and is limited by the wedge 13 .

In a preferred embodiment of the present utility model, the locking structure 2 includes a main body 21, and the side of the main body 21 facing the board body 11 is provided with a T-shaped assembly groove 22 adjacent to the connecting portion. 12 are assembled into the assembly groove 22 after splicing, and as the body 21 moves down, the wedge 13 is wedged into the assembly groove 22, and forms a limit to the downward movement of the body 21; The main body 21 has two symmetrical action slopes 23 front and rear, through which the support rod structure 3 is matched.

Using the assembly groove to cooperate with the connecting part can avoid the front and rear dislocation of adjacent support plates, and the downward movement of the body can be limited by the wedge, and the height can be fixed by the effect of gravity.

In a preferred embodiment of the present utility model, the strut structure 3 includes a support rod 31, a pulley seat 32 is installed at both ends of the support rod 31, and a pulley 33 is fitted through the pulley seat 32, and the pulley 33 has a pulley groove 34 , the action slope 23 acts in the pulley groove 34 , and the support rod 31 is provided with an assembly hole 35 for assembling the tightening member 4 near both ends.

In the above technical solution, the support rods on the front and rear sides are tightened by the tightening member, and the fastening force is generated by the sliding of the pulley against the action slope, which realizes effective support for the support plates on both sides, and the whole connection has no rear Welded structure to avoid the risk of desoldering and dropping.

In a preferred embodiment of the utility model, the tightening member 4 includes a rod 41, and the two ends of the rod 41 are processed with a screw part 42, and the screw part 42 is matched with a sleeve after passing through the assembly hole 35. The tube 43 is provided with a polygonal stress-receiving portion 44 at the end of the sleeve 43 away from the support rod 31 .

In the above technical solution, by rotating the sleeve, the sleeve is pushed into the front and rear support rods to realize the tightening of the front and rear support rods.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

For the convenience of description, spatially relative terms may be used here, such as "on", "above", "on the surface", "above ", etc., are used to describe the spatial positional relationship between one device or feature and other devices or features as shown in the figure. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations”. Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a deep basal pit prestressing force combination steel shotcrete, is including acting on the backplate that props up of foundation ditch inner wall, its characterized in that: and the locking structures are connected between the adjacent support plates, and the stay bar structures are assembled between the locking structures on the left side and the right side, the stay bar structures are arranged in a front-back manner, a tightening component is matched between the stay bar structures, the stay bar structures are mutually drawn together under the action of the tightening component, and the stay bar structures apply pressure to the locking structures when being drawn together.

2. The deep foundation pit prestress combined steel support according to claim 1, wherein: the supporting plate comprises a plate body, connecting portions are formed after the two ends of the plate body are bent, T-shaped shapes are formed after the adjacent connecting portions are spliced, wedge blocks are arranged on the inner sides of the connecting portions, the thickness of each wedge block is gradually increased downwards, and the locking structures are matched with the connecting portions and are limited by the wedge blocks.

3. The deep foundation pit prestressed composite steel support of claim 2, wherein: the locking structure comprises a body, wherein a T-shaped assembling groove is formed in one side, facing the plate body, of the body, the adjacent connecting parts are assembled in the assembling groove after being spliced, and the wedge blocks are wedged into the assembling groove along with the downward movement of the body and limit the downward movement of the body; the body is provided with two action inclined planes which are symmetrical front and back, and the action inclined planes are matched with the support rod structure.

4. The deep foundation pit prestress combined steel support according to claim 3, wherein: the bracing piece structure includes the bracing piece, the pulley holder is installed at the both ends of bracing piece, through the pulley holder cooperation has the pulley, the pulley has the pulley groove, the effect inclined plane acts on in the pulley groove, the bracing piece is provided with the assembly in the position department that is close to both ends the pilot hole of tightening up the component.

5. The deep foundation pit prestress combined steel support according to claim 4, wherein: the tightening member comprises a rod piece, screw rod parts are processed at two ends of the rod piece, the screw rod parts penetrate through the assembly holes and then are matched with a sleeve, and a polygonal stressed part is arranged at one end, far away from the support rod, of the sleeve.

Images