CN219825354U - Pile-bearing buttress type retaining wall combined structure - Google Patents

Abstract

The utility model discloses a pile-supporting buttress retaining wall combined structure, which relates to the technical field of slope protection engineering, and comprises the following components: the supporting pile, the bottom plate and the buttress retaining wall are fixedly connected with the supporting pile through the bottom plate. The pile supporting buttress retaining wall combined structure can fully utilize the self weight of the filled soil at the upper part of the pile supporting buttress retaining wall combined structure, so that the anti-overturning and anti-sliding capabilities of the lower supporting piles are obviously improved, the overall stability is enhanced, and the combined structure function is far greater than the sum of the functions of a single supporting structure.

Description

Pile-bearing buttress type retaining wall combined structure

Technical Field

The utility model relates to the technical field of slope protection engineering, in particular to a pile-supporting buttress retaining wall combined structure.

Background

The buttress retaining wall is a supporting structure widely used in various engineering fields nowadays because of its stable structure, good slope collecting effect, beautiful appearance, simple structure and simple and convenient construction. However, the buttress retaining wall is often difficult to be applied to side slopes with the size of more than 12m and weak soil areas due to the structural volume and the self weight of the buttress retaining wall. Aiming at a series of defects of poor anti-overturning capability, insufficient foundation bearing capacity and the like of the prior art, a single pile and gate-shaped pile bearing buttress retaining wall supporting structure is provided, but in areas with higher requirements on safety level such as high slopes, the single pile and gate-shaped pile bearing retaining wall still cannot meet the stricter requirements on anti-overturning, anti-sliding and displacement control, and the instability and damage of a side slope are likely to occur, so that engineering accidents are caused, patent CN215857832U discloses an ultrahigh buttress retaining wall supporting structure which comprises a panel, a toe board, a heel board and a buttress board which are all reinforced concrete structures, and backfill is filled behind the retaining wall structure; the back of the panel is vertically provided with unloading plates in a grading manner, and each stage of unloading plate forms an unloading decompression platform; the unloading plate is overlapped with the adjacent buttress plate. According to the scheme, the unloading plates are vertically arranged on the back of the panel of the conventional buttress retaining wall in a grading manner according to a certain height, the unloading plates are overlapped with the adjacent buttress plates, and grading unloading and decompression are performed on backfill materials of the wall back, but the self weight is greatly increased, and the device for connecting the self weight with a foundation is not provided, so that the device has the risk of sliding and side slope instability damage on weathered rock layers or weak soil slopes.

Accordingly, there is a need for a pile-supported buttress retaining wall assembly.

Disclosure of Invention

In view of the above, the present utility model provides a pile supporting buttress retaining wall combined structure to solve the above-mentioned problems in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions:

a pile-supporting buttress retaining wall composite structure comprising: the supporting pile, the bottom plate and the buttress retaining wall are fixedly connected with the supporting pile through the bottom plate.

Further, the supporting piles comprise front row piles, middle row piles and rear row piles, the front row piles, the middle row piles and the rear row piles are sequentially embedded and fixed in the soil layer, the pile body embedding and fixing ratio is 4/3, and the pile top is fixedly connected with the bottom plate.

Further, the pile row distance D1 of the front row piles, the middle row piles and the rear row piles is in the range of 10 x R < D1 < 14 x R, and R is the pile radius.

Further, the pile spacing D2 of the front row piles, the middle row piles and the rear row piles is in a range of 8*R, D2 is less than or equal to 10, R is the pile radius.

Further, a drain pipe is arranged in the buttress retaining wall, one end of the drain pipe is arranged in the buttress retaining wall, and the other end of the drain pipe extends out from the buttress retaining wall perpendicular to the bottom plate part.

Further, a hidden beam is arranged at the connecting part of the buttress retaining wall and the bottom plate, and is used for fixing the same-row supporting columns.

The utility model has the beneficial effects that:

in the utility model, the supporting piles, the bottom plate and the buttress retaining wall are fixedly connected, so that the overall structural property is enhanced, the anti-overturning force and the anti-sliding force are improved, the stress of the pile body is improved, and the deformation resistance of the overall structure is improved; the space structure advantage of the pile row distance D1 can be fully exerted when the pile row distance D1 is in the range of 10 x R to less than or equal to D1 to less than or equal to 14 x R; the best anti-skid effect can be achieved when the pile body embedding ratio of the support pile is 4/3; the distance D2 between piles is 8*R-10R and D2 is not less than 10 so as to fully exert the soil arch effect; a drain pipe is arranged in the buttress retaining wall to drain underground water at the back of the wall so as to be beneficial to unblocking of the water system in the retaining wall; the hidden beams are arranged at the fixed parts of the wall-supporting retaining wall and the bottom plate, and the same row of piles are fixed, so that the structure is more stable; the pile supporting buttress retaining wall combined structure can fully utilize the self weight of the filled soil at the upper part of the pile supporting buttress retaining wall combined structure, so that the anti-overturning and anti-sliding capabilities of the lower supporting piles are obviously improved, the overall stability is enhanced, and the combined structure function is far greater than the sum of the functions of a single supporting structure.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a pile supporting buttress retaining wall assembly according to the present utility model.

Fig. 2 is a top view of a support pile according to the present utility model.

Fig. 3 is a schematic structural view of the buttress retaining wall according to the present utility model.

Wherein, in the figure:

1-front row piles, 2-middle row piles, 3-back row piles, 4-bottom plates, 5-buttress retaining walls, 6-drainage pipes, 7-backfill and 8-hidden beams.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the utility model herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-3, a pile-supporting buttress retaining wall assembly comprising: the supporting piles, the bottom plate 4 and the buttress retaining wall 5 are fixedly connected with the supporting piles through the bottom plate 4, and the buttress retaining wall 5 is integrally connected with the supporting piles to form a combined structure. The backfill 7 can be taken nearby and tamped in layers in combination with specific geological conditions, if the upper part is a road, the backfill 7 should meet corresponding road specifications, and the self weight of the backfill 7 is fully utilized, so that the anti-overturning and anti-sliding capacity of the lower supporting pile is obviously improved, the overall stability is enhanced, and the combined structural function is far greater than the sum of the single supporting structural functions.

The supporting piles comprise a front row of piles 1, a middle row of piles 2 and a rear row of piles 3, the front row of piles 1, the middle row of piles 2 and the rear row of piles 3 are sequentially embedded in a soil layer, the front row of piles, the middle row of piles and the rear row of piles can be bored and cast in place according to actual site topography and geological conditions, manual hole digging piles and the like, the embedding ratio is the ratio of the embedding depth to the length of a cantilever section, the best anti-skidding effect can be achieved when the embedding ratio of a pile body is 4/3, and the pile top is fixedly connected with the bottom plate 4.

The pile row distance D1 of the front row piles 1, the middle row piles 2 and the rear row piles 3 is in the range of 10 x R < D1 < 14 x R, and R is the pile radius, so that the space structure advantage of the pile can be fully exerted.

The pile spacing D2 of the front row piles 1, the middle row piles 2 and the rear row piles 3 is in the range of 8*R-10R, wherein D2 is equal to or less than 10, and R is the pile radius so as to fully exert the soil arch effect.

The pile spacing, the pile row spacing and the embedding ratio can be properly adjusted according to the construction site.

The wall-supported retaining wall 5 is internally provided with a water drain pipe 6, one end of the water drain pipe is arranged in the wall-supported retaining wall 5, and the other end of the water drain pipe extends out from the part of the wall-supported retaining wall 5 perpendicular to the bottom plate 4 to drain underground water on the back of the wall so as to be beneficial to unblocking of the water system in the wall.

The connecting part of the wall-supporting retaining wall 5 and the bottom plate 4 is provided with hidden beams 8 for fixing the same row of supporting columns, so that the structure is more stable.

Examples:

1. and (3) construction of a supporting pile:

and checking, modifying and supplementing the design if necessary according to the geological conditions, the construction conditions, the deformation, the stress and other monitoring information of the construction site. The front row piles, the middle row piles and the rear row piles can be bored cast-in-place piles or manual hole digging piles. The range of the pile row distance D1 is 10 x R less than or equal to D1 and less than or equal to 14 x R, so that the space structure advantage of the pile row distance D1 can be fully exerted; the embedding ratio is the ratio of the embedding depth to the length of the cantilever section, and the best anti-skid effect can be achieved when the pile body embedding ratio is 4/3; the distance D2 between piles is 8*R-10 and D2-10 for full play of soil arch effect. Wherein the pile spacing, the pile row spacing and the embedding ratio can be properly adjusted according to the construction site.

2. And (3) concrete slab construction: when the supporting piles are constructed, the pile tops of the front row piles, the middle row piles and the rear row piles are ensured to be reserved with 1m thick bearing platforms, and the supporting piles and the buttress retaining wall are connected and fixed into a pile supporting buttress retaining wall combined structure by a bottom plate (usually adopting thick concrete plates). The hidden beams are added in the buttress retaining wall and used for reinforcing the same-row piles, so that the structure is more stable.

3. And (3) earth backfilling and drainage construction: after the above stage is completed, backfill can be backfilled by taking the soil nearby, and the backfill is compacted by adopting mechanical equipment in a layered manner, wherein the layered thickness is generally 500mm. The drainage construction is consistent with the traditional drainage pipe construction process, and the specific construction is to adjust the hole sites, the hole numbers and the hole depths according to the actual conditions of construction stratum, water containing state and the like, so as to ensure the drainage engineering effect.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. A pile-supporting buttress retaining wall composite structure, comprising: the supporting pile, the bottom plate (4) and the buttress retaining wall (5), wherein the buttress retaining wall (5) is fixedly connected with the supporting pile through the bottom plate (4);

a water drain pipe (6) is arranged in the buttress retaining wall (5), one end of the water drain pipe is arranged in the buttress retaining wall (5), and the other end of the water drain pipe extends out from the buttress retaining wall (5) perpendicular to the bottom plate (4).

2. The pile-supporting buttress retaining wall combined structure according to claim 1, wherein the supporting piles comprise front row piles (1), middle row piles (2) and rear row piles (3), the front row piles (1), the middle row piles (2) and the rear row piles (3) are sequentially embedded in a soil layer, the pile body embedding ratio is 4/3, and the pile tops are fixedly connected with the bottom plate (4).

3. The pile-supporting buttress retaining wall composite structure according to claim 2, wherein the pile row distance D1 of the front row piles (1), the middle row piles (2) and the rear row piles (3) is in the range of 10 x r.ltoreq.d1.ltoreq.14x r, and r is the pile radius.

4. The pile-supporting buttress retaining wall combined structure according to claim 2, wherein the pile spacing D2 of the front row piles (1), the middle row piles (2) and the rear row piles (3) is in the range of 8*R.ltoreq.d2.ltoreq.10xr, and r is the pile radius.

5. A pile-supported buttress retaining wall assembly according to claim 1, characterized in that the connection of the buttress retaining wall (5) and the bottom plate (4) is provided with a hidden beam (8) for fixing the same row of supporting columns.