CN214460462U - Foundation pit supporting structure - Google Patents
Foundation pit supporting structure Download PDFInfo
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- CN214460462U CN214460462U CN202023229911.1U CN202023229911U CN214460462U CN 214460462 U CN214460462 U CN 214460462U CN 202023229911 U CN202023229911 U CN 202023229911U CN 214460462 U CN214460462 U CN 214460462U
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Abstract
The utility model relates to a building technical field especially relates to excavation supporting structure, include the longitudinal support component with the outer soil body contact of excavation, one side of longitudinal support component in towards the excavation is connected with the supporting member, the supporting member includes the bearing diagonal of slope in towards the excavation and the fixed stay of being connected bearing diagonal and longitudinal support component, and distance L1 between longitudinal bearing diagonal top and the longitudinal support component is greater than the distance L2 between bearing diagonal bottom and the longitudinal support component. The utility model has the advantages of can realize the good support effect to foundation ditch retaining structure under the less condition of underground space in occuping the foundation ditch.
Description
Technical Field
The utility model relates to a building technical field especially relates to excavation supporting construction.
Background
At present, when building construction is carried out, a foundation pit is usually required to be excavated firstly, and a foundation pit supporting structure is required to be arranged on the periphery of the foundation pit in order to ensure the stability of the excavated foundation pit. More common, foundation ditch supporting structure has one row to beat the fender soil stagnant water campshed of establishing along the foundation ditch periphery, can be used to block in soil and the water entering foundation ditch outside the foundation ditch, simultaneously, for providing the support for keeping off soil stagnant water campshed, avoid it to empty in the foundation ditch, can erect bearing structure in the foundation ditch and keep off soil stagnant water campshed firm.
Chinese patent CN103074899A discloses a warehouse-separated pier-supported foundation pit supporting structure and construction method, wherein the warehouse-separated pier-supported foundation pit supporting structure comprises a retaining and water-stopping row pile, a pier and a waist beam, wherein the pier comprises a pier pile, a pier capping beam and an inclined strut, and the inclined strut and the pier capping beam are connected with the waist beam formed on the retaining and water-stopping row pile into a whole to support the retaining and water-stopping row pile. However, the buttress piles of the buttress piles need to be arranged in the soil body in the foundation pit, which occupies the underground space of the soil body in the foundation pit, and can cause adverse effects on the working space, the engineering progress and the like of the subsequent structures such as the basement during construction. In addition, the support to retaining soil stagnant water campshed is only the single-point effect that relies on the waist rail position to make and be difficult to reach the requirement in the supporting effect to retaining soil stagnant water campshed.
Therefore, how to improve and design the foundation pit supporting structure to obtain a good supporting effect on the soil and water retaining row piles on the basis of occupying less underground space in the foundation pit as much as possible becomes a problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a foundation ditch supporting construction can realize the good support effect to foundation ditch retaining structure under the less condition of underground space in occuping the foundation ditch.
The utility model provides a foundation ditch supporting construction, include the longitudinal support component with the outer soil body contact of foundation ditch, one side of longitudinal support component orientation in the foundation ditch is connected with the supporting member, the supporting member includes the bearing diagonal of slope in the orientation foundation ditch and the fixed stay of being connected bearing diagonal and longitudinal support component, and distance L1 between longitudinal bearing diagonal top and the longitudinal support component is greater than the distance L2 between bearing diagonal bottom and the longitudinal support component.
The technical scheme of the utility model still include: the inclined support comprises a first inclined support piece and a second inclined support piece, and the inclination angle of the first inclined support piece is larger than or equal to that of the second inclined support piece;
or the diagonal support comprises a first diagonal support piece and a second diagonal support piece, and the length of the first diagonal support piece is less than or equal to that of the second diagonal support piece.
The technical scheme of the utility model still include: the fixed support comprises a first fixed support and a second fixed support, and the first fixed support and the second fixed support are located at different heights of the longitudinal supporting member in the longitudinal direction.
The technical scheme of the utility model still include: the bottom of the inclined support abuts against the longitudinal supporting member;
or the bottom of the inclined support is connected with a longitudinal supporting member.
The technical scheme of the utility model still include: the longitudinal supporting member and the fixed support, and/or the fixed support and the inclined support, and/or the inclined support and the longitudinal supporting member are connected and fixed by a mechanical connecting piece.
The technical scheme of the utility model still include: the fixed support is positioned at the top ends of the inclined support and the longitudinal supporting member;
or the fixed support is positioned at the top end of the inclined support and connected with the side wall of the longitudinal supporting member.
The technical scheme of the utility model still include: the longitudinal supporting members are formed by mutually connected fender piles, and the adjacent fender piles form a concave-convex connecting structure at the connecting part, wherein the concave-convex connecting structure comprises a concave part positioned on one fender pile and a convex part positioned on the other fender pile.
The technical scheme of the utility model still include: the cross section of the concave-convex connecting structure is one or a combination of a plurality of types of rectangle, dovetail shape, circular arc shape and ripple shape.
The technical scheme of the utility model still include: the longitudinal supporting member is formed by mutually connected fender piles, a post-pouring waterproof space is formed at the joint of the adjacent fender piles, the post-pouring waterproof space is formed by side concave sections of a single fender pile, or the post-pouring waterproof space is formed by side concave sections of two adjacent fender piles together.
The technical scheme of the utility model still include: the longitudinal bracing members are formed by interconnected fenders having cavities extending longitudinally through the fenders.
The technical scheme of the utility model still include: the longitudinal supporting member is formed by cast-in-place secant piles;
or the longitudinal supporting member is formed by cast-in-place secant piles and fender piles together, and the fender piles are arranged in the secant piles at intervals.
The beneficial effects of the utility model are that: the method comprises the steps of designing a longitudinal supporting member directly contacting with a soil body outside a foundation pit, designing a supporting member on one side of the longitudinal supporting member facing the inside of the foundation pit to support the longitudinal supporting member, designing an inclined support inclined towards the inside of the foundation pit in the supporting member, and enabling the distance L1 between the top end of the inclined support and the longitudinal supporting member to be larger than the distance L2 between the bottom end of the inclined support and the longitudinal supporting member.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram in an embodiment of the present invention.
Fig. 2 is a schematic view of another embodiment.
Fig. 3 is a schematic view of another embodiment.
Fig. 4 is a schematic view of another embodiment.
Fig. 5 is a schematic view of a longitudinal bracing member in an embodiment.
Fig. 6 is a schematic view of a longitudinal supporting member in another embodiment.
Fig. 7 is a schematic view of a longitudinal supporting member in another embodiment.
Fig. 8 is a schematic view of a longitudinal supporting member in another embodiment.
Fig. 9 is a schematic view of a longitudinal supporting member in another embodiment.
Wherein:
1. longitudinal supporting members 11, fender piles 12, convex parts 13, concave parts 14, post-cast waterproof spaces 15, cavities 16, snap piles 2, fixed supports 21, fixed supports I and I22, fixed supports II and 3, inclined supports 31, first inclined supporting pieces 32 and second inclined supporting pieces;
100. and (5) soil outside the foundation pit, 200 soil inside the foundation pit.
Detailed Description
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.
In this document, terms such as "upper, lower, left, right, inner, and outer" are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may vary depending on the drawings, and therefore, the terms are not to be construed as an absolute limitation of the protection scope; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements. In addition, in the embodiments of the present invention, "above", "below", and the like include the present numbers.
The embodiment of the utility model discloses excavation supporting construction will carry out the supporting member of the vertical supporting member of direct backstop to the outer soil body of foundation ditch and design into towards the interior slope of foundation ditch, underground space in the foundation ditch that so reducible supporting member occupy to provide convenience for subsequent construction operation.
< example one >
As shown in fig. 1 to 7, the foundation pit supporting structure of the present embodiment includes a longitudinal supporting member 1 and a supporting member, wherein the longitudinal supporting member 1 directly contacts with the soil body 100 outside the foundation pit to stop the same, and the supporting member is disposed on a side of the longitudinal supporting member 1 facing the inside of the foundation pit, i.e., above the soil body 200 inside the foundation pit in the example of fig. 1, so as to support the longitudinal supporting member 1 and prevent the longitudinal supporting member from falling into the foundation pit under the action of the soil body 100 outside the foundation pit, so as to ensure the safety of the foundation pit operation.
The supporting member comprises a diagonal bracing 3 and a fixed bracing 2, wherein the fixed bracing 2 is used for connecting the diagonal bracing 3 and the longitudinal bracing member 1 to form an integral bracing structure. The diagonal braces 3 are designed to be inclined toward the inside of the foundation pit, that is, the distance L1 between the top ends of the diagonal braces 3 and the longitudinal bracing member 1 in the longitudinal direction is greater than the distance L2 between the bottom ends of the diagonal braces 3 and the longitudinal bracing member 1. Therefore, the inclined supports 3 can be relatively close to the longitudinal supporting component 1 at the position of the soil body 200 in the foundation pit, so that the occupied space of the soil body 200 in the foundation pit is reduced by the whole foundation pit supporting structure, the influence on subsequent operations such as supporting columns, basement structures and the like performed on the soil body 200 in the foundation pit is reduced, and the operation efficiency is convenient to improve.
In other modifications of the present embodiment, in order to improve the supporting effect on the longitudinal supporting member 1, the diagonal brace 3 includes a first diagonal brace 31 and a second diagonal brace 32, it should be understood that the first diagonal brace 31 and the second diagonal brace 32 are only exemplary illustrations, and a third diagonal brace or a fourth diagonal brace may be added according to the requirements of the construction foundation pit operation, the engineering cost, and the like, which is not limited by the present embodiment.
Specifically, the inclination angle of the first diagonal brace 31 is greater than or equal to the inclination angle of the second diagonal brace 32, or the length of the first diagonal brace 31 is less than or equal to the length of the second diagonal brace 32. As shown in fig. 2, the first diagonal bracing member 31 is closer to the longitudinal bracing member 1 than the second diagonal bracing member 32, and the bottom ends of the first diagonal bracing member 31 and the second diagonal bracing member 32 are both fixed in the soil body 200 in the foundation pit, so that the inclination angle of the first diagonal bracing member 31 is larger than that of the second diagonal bracing member 32, and the length of the first diagonal bracing member 31 is smaller than that of the second diagonal bracing member. The bottom end of the first diagonal support member 31 abuts against the longitudinal support member 1, so that in addition to the supporting point of the upper fixed support 2 to the longitudinal support member 1, another supporting point can be formed at the lower first diagonal support member 31, so that the supporting member can realize multi-point support to the longitudinal support member 1, and the supporting effect to the longitudinal support member 1 is improved.
As shown in fig. 3, the first diagonal bracing member 31 and the second diagonal bracing member 32 are designed with the same inclination angle, and the bottom end of the second diagonal bracing member 32 is fixed in the soil body 200 in the foundation pit, but the bottom end of the first diagonal bracing member 31 is fixed on the longitudinal bracing member 1. In this way, the length of the first diagonal stay 31 formed to adopt the same inclination angle is smaller than the length of the second diagonal stay 32. Specifically, the bottom end of the first diagonal support member 31 is connected to the longitudinal support member 1, for example, the first diagonal support member and the longitudinal support member 1 may be connected and fixed by a mechanical connector, and the fixed support 2 may also be connected and fixed by a mechanical connector to the longitudinal support member 1, so that the support member may form a multi-point support for the longitudinal support member 1, the support effect may be improved, and further, the safety of the foundation pit may be enhanced. Meanwhile, the fixed support 2 and the top ends of the first diagonal support member 31 and the second diagonal support member 32 can also be connected and fixed by using a mechanical connecting member, so that the butt joint of the longitudinal supporting member 1, the diagonal support 3 and the fixed support 2 is facilitated, and the connecting strength is improved.
In other variations of this embodiment, in order to enhance the supporting strength of the longitudinal supporting member 1, the fixed support 2 includes a first fixed support 21 and a second fixed support 22, similar to the inclined support 3, where the first fixed support 21 and the second fixed support 22 are not limited to the number of members forming the fixed support 2, and can be designed by themselves according to the requirements of construction operation, engineering cost, and the like. In the longitudinal direction, the first fixed support 21 and the second fixed support 22 are located at different heights of the longitudinal support member 1, as shown in fig. 4, the second fixed support 22 is higher than the first fixed support 21 in the longitudinal direction, the second fixed support 22 is located at the top ends of the second diagonal support member 32 and the longitudinal support member 1, and the first fixed support 21 is located at the top end of the first diagonal support member 31 and connected to the side wall of the longitudinal support member 1.
As shown in fig. 5 to 7, the longitudinal supporting member 1 may be formed of the guard piles 11, the guard piles 11 are sequentially driven at the junctions of the soil mass 100 outside the foundation pit along the designed position of the foundation pit during construction, and the guard piles 11 are designed to have the protrusions 12 and the recesses 13 at the connecting ends, respectively, so that the protrusions 12 driven into the guard piles 11 at the rear can be driven along the recesses 13 which have been previously driven into the guard piles 11, and the concave-convex connection structure formed by the protrusions 12 and the recesses 13 can provide guidance for the construction of the guard piles 11, facilitate the work and improve the construction accuracy of the guard piles 11, and the longitudinal supporting member 1 formed of the guard piles 11 having the concave-convex connection structure has good integrity and high tensile strength for stopping the soil mass 100 outside the foundation pit. Specifically, the cross section of the concave-convex connection structure may be designed as one or a combination of several of a rectangle, a dovetail shape, an arc shape, and a corrugated shape, and the cross section of the fender post 11 may be designed as a rectangle, a T shape, an i shape, and the like.
As shown in fig. 5, the post-cast waterproof spaces 14 are formed at the joints of the adjacent fender piles 11, and during construction, after the adjacent fender piles 11 are driven into the soil body in sequence, concrete, waterproof material or the like can be poured into the formed post-cast waterproof spaces 14, so as to prevent pore water or the like in the soil body 100 outside the foundation pit from penetrating into the foundation pit through the fender piles 11 and the joints where the fender piles 11 are connected. In particular, this post-cast watertight space 14 may be formed by a side recessed section of a single fender post 11, such as the larger post-cast watertight space 14 located in the middle in the example of fig. 5, but only by a side recessed section of the fender post 11 located on the right side in the figure. Alternatively, the post-cast waterproof spaces 14 are formed by side concave sections of two adjacent fender posts 11, such as the post-cast waterproof spaces 14 with smaller size on both sides in the example of fig. 5, which are formed by side concave sections of the fender posts 11 on both left and right sides. And, it is possible to provide a cavity 15 in the guard post 11, and to make this cavity 15 penetrate the guard post 11 in the longitudinal direction, i.e. the guard post 11 may take the form of a hollow post.
< example two >
In the present embodiment, the same portions as those in the first embodiment are given the same reference numerals, and the same description is omitted.
As shown in fig. 8, in the foundation pit supporting structure of the present embodiment, the longitudinal supporting member 1 is formed of a cast-in-place bite pile 16; alternatively, in other variations of this embodiment, as shown in fig. 9, the longitudinal support members 1 are formed by co-operating cast-in-place spuds 16 and the pickets 11, and the pickets 11 are spaced apart within the spuds 16. The longitudinal supporting member 1 can be formed in a cast-in-place manner, so that the foundation pit supporting structure of the embodiment can be suitable for some engineering places which are not suitable for adopting the precast fender post 11 in advance.
In the case that the embodiments are not contradictory, at least some of the technical solutions in the embodiments may be recombined to form the essential technical solution of the present invention, and of course, the embodiments may also be cited or included in each other. Moreover, it should be noted that adaptation modifications (such as partial addition, partial deletion, and partial modification) made by those skilled in the art when recombining technical means described in each embodiment will also fall within the scope of the present invention.
The technical principles of the present invention have been described above with reference to specific embodiments, but it should be noted that the above descriptions are only for explaining the principles of the present invention, and should not be interpreted as specifically limiting the scope of the present invention in any way. Based on the explanation here, those skilled in the art can conceive of other embodiments of the present invention or equivalent alternatives without creative efforts, and will fall into the protection scope of the present invention.
Claims (10)
1. The utility model provides a foundation ditch supporting construction which characterized in that: the vertical supporting member is connected with a supporting member on one side of the vertical supporting member facing the inside of the foundation pit, the supporting member comprises an inclined support inclined towards the inside of the foundation pit and a fixed support connecting the inclined support and the vertical supporting member, and the distance L1 between the top end of the vertical inclined support and the vertical supporting member is greater than the distance L2 between the bottom end of the inclined support and the vertical supporting member.
2. A foundation pit supporting construction according to claim 1, wherein: the inclined support comprises a first inclined support piece and a second inclined support piece, and the inclination angle of the first inclined support piece is larger than or equal to that of the second inclined support piece;
or the diagonal support comprises a first diagonal support piece and a second diagonal support piece, and the length of the first diagonal support piece is less than or equal to that of the second diagonal support piece.
3. A foundation pit supporting construction according to claim 1 or 2, wherein: the fixed support comprises a first fixed support and a second fixed support, and the first fixed support and the second fixed support are located at different heights of the longitudinal supporting member in the longitudinal direction.
4. A foundation pit supporting construction according to claim 1, wherein: the bottom of the inclined support abuts against the longitudinal supporting member;
or the bottom of the inclined support is connected with a longitudinal supporting member;
or the longitudinal supporting member and the fixed support, and/or the fixed support and the inclined support, and/or the inclined support and the longitudinal supporting member are connected and fixed by a mechanical connecting piece.
5. A foundation pit supporting construction according to claim 1 or 4, wherein: the fixed support is positioned at the top ends of the inclined support and the longitudinal supporting member;
or the fixed support is positioned at the top end of the inclined support and connected with the side wall of the longitudinal supporting member.
6. A foundation pit supporting construction according to claim 1, wherein: the longitudinal supporting members are formed by mutually connected fender piles, and the adjacent fender piles form a concave-convex connecting structure at the connecting part, wherein the concave-convex connecting structure comprises a concave part positioned on one fender pile and a convex part positioned on the other fender pile.
7. A foundation pit supporting construction according to claim 6, wherein: the cross section of the concave-convex connecting structure is one or a combination of a plurality of types of rectangle, dovetail shape, circular arc shape and ripple shape.
8. A foundation pit supporting construction according to claim 1 or 6, wherein: the longitudinal supporting member is formed by mutually connected fender piles, a post-pouring waterproof space is formed at the joint of the adjacent fender piles, the post-pouring waterproof space is formed by side concave sections of a single fender pile, or the post-pouring waterproof space is formed by side concave sections of two adjacent fender piles together.
9. A foundation pit supporting construction according to claim 1, wherein: the longitudinal bracing members are formed by interconnected fenders having cavities extending longitudinally through the fenders.
10. A foundation pit supporting construction according to claim 1, wherein: the longitudinal supporting member is formed by cast-in-place secant piles;
or the longitudinal supporting member is formed by cast-in-place secant piles and fender piles together, and the fender piles are arranged in the secant piles at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023229911.1U CN214460462U (en) | 2020-12-29 | 2020-12-29 | Foundation pit supporting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023229911.1U CN214460462U (en) | 2020-12-29 | 2020-12-29 | Foundation pit supporting structure |
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| CN214460462U true CN214460462U (en) | 2021-10-22 |
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| CN202023229911.1U Active CN214460462U (en) | 2020-12-29 | 2020-12-29 | Foundation pit supporting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032921A (en) * | 2021-12-11 | 2022-02-11 | 中亿建业集团有限公司 | Deep foundation pit and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032921A (en) * | 2021-12-11 | 2022-02-11 | 中亿建业集团有限公司 | Deep foundation pit and construction method thereof |
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