CN216304632U - Dado and because hole supporting construction that digs of this dado - Google Patents

Abstract

The application discloses a retaining wall and a hole digging supporting structure based on the same, belongs to the technical field of pile foundation construction supporting, and solves the problems that when a soft plastic layer is encountered in the hole forming process of a traditional manual hole digging pile, the hole collapse and hole shrinkage phenomena are easy to occur; this application includes a plurality of prefabricated dado frameworks, and every dado framework all includes lateral wall all around, vertical connection between the adjacent dado framework is equipped with the cell type structure in vertical joint seam department and consolidates the processing, and the dado framework is used for placing the inside wall in soft layer stake hole of moulding, and the stake hole is vertically seted up in the inside of ground, and the cross section direction of dado framework adopts "well" font bearing structure to consolidate. According to the embodiment of the utility model, the prefabricated retaining wall is adopted to replace a concrete retaining wall, the welding seam is vertically reinforced by adopting a groove-shaped structure, and the support in the shape of a Chinese character 'jing' is arranged along the cross section direction of the pile body, so that the steel retaining wall is prevented from being extruded and deformed, the use amount of cement, stones and sand is reduced, the energy is saved, the environment is protected, the construction period is saved, and the problems of hole collapse and hole shrinkage are effectively solved.

Description

Dado and because hole supporting construction that digs of this dado

Technical Field

The application relates to the technical field of pile foundation construction support, in particular to a retaining wall and a hole digging support structure based on the retaining wall.

Background

With the continuous increase of national economy and the rapid advance of urban construction, the manual hole digging pile is generally applied in most areas, and with the continuous increase of the height of modern buildings, the application of the large-aperture and ultra-deep manual hole digging pile is more and more extensive, but when a soft plastic layer is encountered in the hole forming process of the large-aperture and manual hole digging pile, the method of reducing the height of a retaining wall template, rapidly excavating and rapidly pouring retaining wall concrete is generally adopted to penetrate through a mud layer.

The construction method has many defects, and due to the fact that the soil layer is high in water content, hole collapse and hole shrinkage are prone to occurring, so that not only is life safety of underground constructors threatened, but also reworking and concrete overstowing are caused, and adverse factors are caused to follow-up construction.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides the retaining wall and the hole digging supporting structure based on the retaining wall, so that the problems that when a soft plastic layer is encountered in the hole forming process of a large-aperture and manual hole digging pile, the traditional hole digging supporting structure is easy to collapse and shrink, the life safety of underground constructors is threatened, and adverse factors such as rework, concrete overdischarge and subsequent construction are caused are solved; according to the embodiment of the utility model, the prefabricated retaining wall is adopted to replace a concrete retaining wall, the welding seam is vertically reinforced by adopting a groove-shaped structure, and the support in the shape of a Chinese character 'jing' is arranged along the cross section direction of the pile body, so that the steel retaining wall is prevented from being extruded and deformed, the use amount of cement, stones and sand is reduced, the energy is saved, the environment is protected, the construction period is saved, and the problems of hole collapse and hole shrinkage are effectively solved.

In a first aspect, an embodiment of the present invention provides a retaining wall, including a plurality of prefabricated retaining wall frames, where each retaining wall frame includes a peripheral side wall, adjacent retaining wall frames are vertically connected to each other, and a groove-type structure is disposed at a vertical connection seam for reinforcement, and the retaining wall frame is used for being placed on an inner side wall of a pile hole in a soft plastic layer, and the pile hole is longitudinally formed in a foundation.

With reference to the first aspect, in a possible implementation manner, each of the retaining wall frames is made of a steel material, and adjacent retaining wall frames are welded.

With reference to the first aspect, in a possible implementation manner, the groove-shaped structure is a channel steel, and the channel steel is fixed at the vertical connecting seam through a bolt; the channel steel comprises an upper end face, a lower end face and a groove opening face, the upper end face and the lower end face are perpendicular to the side wall of the retaining wall frame body respectively and extend towards the inner side of the retaining wall frame body, and the distance between the upper end face and the lower end face and the vertical connecting seam between the retaining wall frame bodies is equal.

With reference to the first aspect, in one possible implementation manner, the retaining wall frame body is made of a steel plate with a thickness of 10mm or more.

With reference to the first aspect, in one possible implementation manner, the height of each of the retaining wall frames is 3-3.5 m.

In a second aspect, a retaining wall excavation supporting structure is provided, using any one of the retaining walls described above, wherein the retaining wall frame is used as a retaining wall when the pile hole reaches the soft plastic layer, and the concrete retaining wall is used when the pile hole reaches the hard layer.

With reference to the second aspect, in a possible implementation manner, a "groined" shaped support structure is further arranged along the cross section direction of the pile foundation;

the cross section direction of the retaining wall frame body is reinforced by a cross-shaped supporting structure, the cross-shaped supporting structure is arranged between two adjacent vertical connecting seams, and the distances of the cross-shaped supporting structure in the vertical direction are equal.

With reference to the second aspect, in one possible implementation manner, the # -shaped support structure is a steel pipe with a diameter of 5-10 cm.

With reference to the second aspect, in a possible implementation manner, the support structure shaped like a Chinese character 'jing' includes a horizontal support and a vertical support, the horizontal support and the vertical support are in contact with each other and distributed, and both the horizontal support and the vertical support are fixed on an inner side wall of the retaining wall frame.

With reference to the second aspect, in one possible implementation manner, for a mud layer with a depth greater than 3m, a layer of the support structures shaped like a Chinese character 'jing' is arranged every 1.5-2m along the cross section direction of the retaining wall frame body.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

1. according to the embodiment of the utility model, the prefabricated wall protection frame body is adopted to replace a concrete wall protection, the welding seam is vertically reinforced by adopting a groove-shaped structure, and the support in the shape like the Chinese character 'jing' is arranged along the cross section direction of the pile body, so that the wall protection frame body is prevented from being extruded and deformed, the operation is simple, the working efficiency is improved, the personal safety of construction personnel can be effectively ensured after the periphery of the well wall is supported by the wall protection frame body, and the delay of the construction period caused by hole collapse and hole shrinkage is avoided.

2. According to the embodiment of the utility model, the wall protection frame body is made of steel materials, so that the cost is saved, the use amount of cement, stones and sand is reduced, the energy is saved, the environment is protected, the construction period is saved, and the problems of hole collapse and hole shrinkage are effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present invention or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a retaining wall and a hole digging supporting structure based on the retaining wall according to an embodiment of the present application;

fig. 2 is a partial structural schematic view of a retaining wall and a hole digging supporting structure based on the retaining wall according to an embodiment of the present application;

fig. 3 is a partial structural schematic view of a retaining wall and a hole digging support structure based on the retaining wall according to an embodiment of the present application.

Reference numerals: 1-a retaining wall frame body; 2-vertical connecting seams; 3-a slot-type structure; 4- 'well' shaped support structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

Before the utility model is explained, the whole process of forming the hole by manually digging a hole pile is introduced, firstly, a field is leveled, dangerous stone and floating soil are removed, then, the lofting is measured, a cross line of a pile foundation is measured, the accurate position of the pile hole is determined, the pile foundation is arranged, and the lofting result is measured; and then protecting the hole opening, wherein concrete around the hole opening is made into a surrounding ring to protect the hole opening, the surrounding ring is 30cm higher than the ground to prevent soil and stones and sundries from rolling into the hole to hurt people, if the stratum of the hole opening is soft, the hole opening needs to be reinforced around the hole opening in order to prevent the collapse of the air opening, and the periphery of the hole opening is hardened by mortar within 1 m. Determining excavated pile earthwork, determining the excavation height of each stage according to geological conditions, wherein the excavation height is generally 0.9-1.2m preferably, excavating pile holes layer by layer from top to bottom, excavating earthwork in the middle part, expanding the periphery, detecting the position of the center of a pile foundation, checking the aperture and the verticality after the excavation of the pile holes in each stage is finished, placing retaining wall reinforcing steel bars immediately after the excavation of the holes in the first stage is finished, pouring retaining wall concrete, generally adopting C30 concrete, the thickness is not less than 10cm, and excavating the holes section by section according to the same steps.

If the hole is dug in a soft mud layer, the height of a retaining wall template is generally reduced, the retaining wall concrete is quickly excavated and poured to penetrate through the soft plastic layer, the construction method has many defects, and because the water content of the soil layer is large, the phenomena of hole collapse and hole shrinkage are easy to occur, so that the life safety of underground constructors is threatened, rework, concrete overstowing and adverse factors to subsequent construction are caused.

During specific operation, the center point of the pile foundation is placed, and the pile protection is well made, so that a basis is provided for the steel retaining wall to be in place. And (3) making a pore channel for anchoring the jack on the formed concrete lock catch or the periphery of the concrete, wherein 4-6 points are arranged on each end face, and one end face is arranged every 50 centimeters downwards. The steel retaining wall is manufactured into a section of 3 meters, the manufactured steel retaining wall is transported to the site by a truck-mounted crane and hoisted into a hole by manually matching with a 25-ton truck crane, and the position of the steel retaining wall is adjusted according to a retaining pile. After the steel retaining wall is in place, the upper part of the inner side of the steel retaining wall is excavated manually, and the steel retaining wall is jacked downwards by using a jack. In order to prevent the steel retaining wall from laterally moving, two workers excavate soil downwards along the symmetrical direction of the steel retaining wall, and the fixed position of the jack is adjusted once every 50cm of excavation. Generally, the steel retaining wall needs to penetrate through a soft mud layer and enter a plastic soil layer to a depth of not less than 1.5m, and the construction of the concrete retaining wall is started after the steel retaining wall penetrates through the soft mud layer.

As shown in fig. 1 to 3, a retaining wall according to an embodiment of the present invention includes a plurality of prefabricated retaining wall frames 1, each retaining wall frame 1 includes a peripheral side wall, adjacent retaining wall frames 1 are vertically connected, a groove structure 3 is disposed at a vertical connection seam 2 for reinforcement, the retaining wall frame 1 is disposed on an inner side wall of a pile hole of a soft plastic layer, and the pile hole is longitudinally formed in a foundation.

Through the scheme, the vertical connecting seams 2 among the multiple retaining wall frames 1 are reinforced by the groove-shaped structures 3 so as to keep the vertical stability of the retaining wall frames 1.

Each of the retaining wall frames 1 is made of steel material, and adjacent retaining wall frames 1 are welded. When the steel retaining wall is manufactured, common steel is adopted for manufacturing, and conventional construction machinery and machines are adopted in the installation process; because no special material, machinery and machines are used for manufacturing and installing the steel retaining wall, the strength is high, the construction cost can be effectively saved, and the construction efficiency is improved.

The channel-type structure 3 is a channel steel, and the channel steel can be fixed at the vertical connecting seam through bolts; the channel-section steel includes up end, lower terminal surface and recess opening face up end and lower terminal surface perpendicular to the lateral wall of dado framework 1 respectively to extend towards dado framework 1 inboard, up end and lower terminal surface respectively with 2 distances of vertical joint between the dado framework 1 equal. The channel-section steel is in order to consolidate vertical joint 2, and the bolt fastening also makes things convenient for being connected between channel-section steel and the dado framework 1, and the distance of up end and lower terminal surface from vertical joint 2 equals, can make the channel-section steel even in the both sides atress of vertical joint 2.

The protective wall frame body 1 is made of steel plates with the thickness of more than 10mm, so that the strength of the protective wall frame body 1 is ensured, and the safety of construction on a soft plastic layer is improved.

The size of every dado framework 1 is the same, and the dado framework 1 of the same size can standardized production like this, and is convenient, in addition, vertical linking together between the dado framework 1 of the same size, and its atress is also even, can also guarantee better welding together. The height of each retaining wall frame 1 is 3-3.5 m. In the embodiment, 3m is selected for each wall protection frame body. If the depth of the soft plastic layer is more than 3m, the downward tunneling can be continued by adopting a welding lengthening method.

In addition, the embodiment of the utility model also provides a retaining wall hole digging supporting structure, which uses any one of the retaining walls, when the interior of a pile hole reaches a soft plastic layer, the retaining wall frame body 1 is used as a retaining wall, and when the interior of the pile hole reaches a hard layer, a concrete retaining wall is used.

A support structure 4 shaped like a Chinese character 'jing' is also arranged along the cross section direction of the pile foundation; the cross section direction of the retaining wall frame body 1 is reinforced by a cross-shaped supporting structure 4, the cross-shaped supporting structure 4 is arranged between two adjacent vertical connecting seams 2, and the distances of the cross-shaped supporting structure 4 in the vertical direction are equal. Locate "well" font bearing structure 4 between two adjacent vertical joint 2, be equivalent to the reinforced structure who sets to pile foundation cross section direction in the inside middle part of every dado framework 1, the effort is concentrated in the middle part of the inner wall of every dado framework 1, and all has the reinforcement on the equidirectional not, and such reinforcement mode makes every dado framework 1 fix the effect better on the whole, and stability is good.

The cross section direction of the retaining wall frame body 1 is reinforced by the cross-shaped supporting structures 4 to keep the stability and firmness of the side walls around the retaining wall frame body 1 and prevent the inner wall of the retaining wall frame body 1 from being extruded and deformed, so the combination of the groove-shaped structures 3 and the cross-shaped supporting structures 4 not only enhances the vertical stability, but also enhances the stability of the side walls of the retaining wall frame body 1.

Wherein, the Chinese character 'jing' shaped supporting structure 4 is a steel pipe with the diameter of 5-10 cm. The steel pipe has high structural strength, is convenient to connect with the inner side wall of the retaining wall frame body 1, has a reliable integral structure and good stress effect, can reduce the number of layers of the inner support of the steel pipe, is safe and practical, and can also have the function of saving materials when meeting the good support effect on the limitation of the diameter of the steel pipe.

In addition, the support structure 4 in the shape of a Chinese character 'jing' comprises a transverse support 41 and a vertical support 42, wherein the transverse support 41 and the vertical support 42 are in contact distribution with each other, and the transverse support 41 and the vertical support 42 are fixed on the inner side wall of the retaining wall frame 1. Here, the fixing plates may be fixed to the ends of the horizontal supports 41 and the vertical supports 42, respectively, and the fixing plates of the horizontal supports 41 and the vertical supports 42 may be fixed to the retaining wall frame 1 by bolts, which is easy to operate and detachable.

For mud layers with the depth larger than 3m, a layer of support structures 4 shaped like a Chinese character 'jing' is arranged every 1.5-2m along the cross section direction of the wall protection frame body 1. In the embodiment, a support structure 4 shaped like a Chinese character 'jing' is arranged along the cross section direction of the pile body every 2 meters of tunneling, so that the steel retaining wall frame body 1 is prevented from being extruded and deformed. Because the spacing distance is short, manpower is wasted, and materials of the cross-shaped supporting structure are wasted, and if the spacing distance is long, the supporting effect on the periphery of the retaining wall frame body 1 is poor, so that the supporting effect is best when the cross-shaped supporting structure 4 is arranged along the cross section direction of the pile body every 2 meters of tunneling according to practical and research results.

The embodiment of the utility model is suitable for geological conditions that a soft plastic layer is encountered, and hole collapse and hole shrinkage are easy to occur in the hole forming process of the manual hole digging pile with large aperture and underground bound pile foundation reinforcing steel bars.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.

Claims (10)

1. The utility model provides a dado, its characterized in that includes a plurality of prefabricated dado frameworks (1), every dado framework (1) all includes lateral wall all around, and is adjacent vertical connection between dado framework (1) to it consolidates the processing to be equipped with cell type structure (3) in vertical joint seam (2) department, dado framework (1) is used for placing the inside wall in soft layer stake hole of moulding, the inside at the ground is vertically seted up in the stake hole.

2. A retaining wall according to claim 1, characterized in that each retaining wall frame (1) is made of steel material, and adjacent retaining wall frames (1) are welded together.

3. A retaining wall according to claim 1, characterised in that the channel structure (3) is a channel which is bolted at the vertical joints;

the channel steel comprises an upper end face, a lower end face and a groove opening face, the upper end face and the lower end face are perpendicular to the side wall of the retaining wall frame body (1) respectively and extend towards the inner side of the retaining wall frame body (1), and the distance between the upper end face and the lower end face and a vertical connecting seam (2) between the retaining wall frame bodies (1) is equal.

4. A retaining wall according to claim 1, characterized in that the retaining wall frame (1) is made of steel sheet with a thickness of 10mm or more.

5. A retaining wall according to claim 1, characterized in that the dimensions of each retaining wall frame (1) are the same, and the height of each retaining wall frame (1) is 3-3.5 m.

6. A retaining wall excavation supporting structure, characterized in that the retaining wall of any one of claims 1 to 5 is used, and the retaining wall frame body (1) is used as a retaining wall when the pile hole reaches a soft plastic layer, and a concrete retaining wall is used when the pile hole reaches a hard layer.

7. A retaining wall, excavation and supporting structure according to claim 6, characterized in that "well" shaped supporting structures (4) are further provided along the pile foundation in the transverse direction;

the cross section direction of the retaining wall frame body (1) is reinforced by a cross-shaped supporting structure (4), the cross-shaped supporting structure (4) is arranged between two adjacent vertical connecting seams (2), and the distances of the cross-shaped supporting structure (4) in the vertical direction are equal.

8. A retaining wall, excavation and supporting structure according to claim 7, characterized in that the "groined" support structure (4) is a steel pipe with a diameter of 5-10 cm.

9. A retaining wall, excavation and supporting structure according to claim 7, characterized in that the Chinese character jing shaped supporting structure (4) comprises a transverse support (41) and a vertical support (42), the transverse support (41) and the vertical support (42) are distributed in contact with each other, and the transverse support (41) and the vertical support (42) are both fixed on the inner side wall of the retaining wall frame body (1).

10. A retaining wall, excavation and supporting structure according to claim 7, characterized in that for mud layers with a depth greater than 3m, a layer of the "well" -shaped supporting structure (4) is provided every 1.5-2m in the direction of the cross-section of the retaining wall frame (1).

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