CN210737585U - Retaining structure - Google Patents

Abstract

The utility model provides a retaining structure, retaining structure includes: the slope of a back slope of the retaining wall is a depression slope type; the bearing platform is connected with the retaining wall; the foundation piles are connected with the bearing platform and are positioned on one side, far away from the retaining wall, of the bearing platform; the foundation pile is anchored at least in a strongly weathered rock formation. Adopt the utility model discloses, can effectively overcome land used and space limited condition under keep off the defect that setting up of engineering can't satisfy technical requirement to can avoid changing the condition emergence that engineering scheme leads to the engineering expense to increase by a wide margin because of needs. The supporting structure can effectively collect slopes, steep slopes and the like near a limited object and reinforce the slopes and the steep slopes, and is safe in stress, simple in structure and good in long-term stability.

Description

Retaining structure

Technical Field

The utility model relates to a geotechnical engineering field especially indicates a retaining structure.

Background

The upward-inclined retaining wall is a retaining structure widely applied to slopes and steep slope embankments, and can effectively receive slopes and reinforce the slopes and the steep slope embankments to ensure long-term stability of roadbeds.

However, when the steep slope section where the foundation is located is also a limited section (for example, when a railway, a road, a river channel, a pipeline or a building is distributed on the slope toe of the steep slope embankment), the inclined retaining wall cannot meet the technical requirements and cannot adapt due to the limitation of conditions such as land use, space and the like, and if the railway is changed, a bridge is used for replacing the road, or the existing building is removed, and the like, so that the inclined retaining wall can meet the technical requirements, the engineering change is serious, and the engineering investment is obviously increased.

SUMMERY OF THE UTILITY MODEL

In view of this, the main object of the present invention is to provide a retaining structure to mainly solve the problem that the existing retaining structure can not satisfy the technical requirements when the steep slope section where the roadbed is located is the limited section.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a retaining structure, retaining structure includes:

the slope of a back slope of the retaining wall is a depression slope type;

the bearing platform is connected with the retaining wall;

the foundation piles are connected with the bearing platform and are positioned on one side, far away from the retaining wall, of the bearing platform; the foundation pile is anchored at least in a strongly weathered rock formation.

Further, the slope rate of the back slope is 1: 0.1-0.3.

Further, the surface slope of the retaining wall is a vertical surface.

Furthermore, the foundation piles are arranged in two rows along the width direction of the bearing platform, and the two rows of foundation piles are arranged in parallel at intervals.

Furthermore, the number of the foundation piles is six, the six foundation piles are arranged in three rows along the length direction of the bearing platform, and the three rows of the foundation piles are arranged in parallel at intervals.

Further, the foundation pile is a dug pile or a drilled pile.

Further, the foundation pile is anchored in a weakly weathered rock formation.

Further, the retaining wall, the bearing platform and the foundation pile are in rigid connection.

Further, the retaining structure is a reinforced concrete structure.

The utility model provides a prop up fender structure, the barricade of slope for bowing inclined through setting up the back slope to with the barricade setting on the cushion cap, the cushion cap is connected with the foundation pile again, can effectively overcome the defect that the setting that props up the fender engineering under land for use and the limited condition in space can't satisfy technical requirement, thereby can avoid changing the condition emergence that the engineering scheme leads to the engineering expense to increase by a wide margin because of needs. The supporting structure can effectively collect slopes, steep slopes and the like near a limited object and reinforce the slopes and the steep slopes, and is safe in stress, simple in structure and good in long-term stability.

Drawings

FIG. 1 is a schematic illustration of a retaining structure of the prior art;

fig. 2 is a schematic supporting diagram of a supporting structure according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a supporting structure according to an embodiment of the present invention.

Reference numerals: a retaining structure 100', 100; a bottom portion 100' b; a retaining wall 1; back slopes 1a, 100' a; a face slope 1 b; a bearing platform 2; foundation piles 3.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

It should be noted that, in the case of no conflict, the technical features in the embodiments and examples of the present invention may be combined with each other, and the detailed description in the specific embodiment should be interpreted as an explanation of the gist of the present invention and should not be construed as an improper limitation of the present invention.

In the description of the present invention, the orientation or position relationship is the normal use status based on the retaining structure, such as the orientation or position relationship shown in fig. 3, wherein "vertical" is the up-down direction of fig. 3, and "width" and "horizontal" are the front-back direction of fig. 3, it should be understood that these orientation terms are only for convenience of description and simplification of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be interpreted as a limitation of the present invention.

An embodiment of the present invention provides a retaining structure, please refer to fig. 2 and fig. 3, the retaining structure 100 includes: retaining wall 1, cushion cap 2 and foundation pile 3, the slope of retaining wall 1's back slope 1a is the formula of bowing to one side, and cushion cap 2 is connected with retaining wall 1, and the quantity of foundation pile 3 is a plurality of, and a plurality of foundation piles 3 are connected with cushion cap 2 and are located cushion cap 2 and keep away from one side of retaining wall 1, and foundation pile 3 anchors at least in strong weathering rock stratum.

Specifically, in general, if the same calculation method and calculation index are used for calculation, the active soil pressure borne by the upward-inclined retaining structure is much smaller than that of the downward-inclined retaining structure, and therefore, in the prior art, the downward-inclined retaining structure is generally used for slope collection and support of slopes and steep slope embankments. Referring to fig. 1, in a conventional inverted slope retaining structure 100 ', a bottom 100 ' b is generally fixed in a soil layer, and one side of a back slope 100 ' a of the retaining structure abuts against soil such as a slope and a steep slope, so that the slope and the steep slope embankment can be effectively reinforced. However, when there is a restricted object such as a railway, a road, a river, a pipeline, or a building near a slope or a steep slope, since the distance L1 between the retaining structure 100 ' and the restricted object is relatively short, the presence of the restricted object may affect the normal construction of the retaining structure 100 ', and thus the retaining structure 100 ' may not meet the related technical requirements.

Referring to fig. 2 and 3, in the present embodiment, the slope of the back slope 1a of the retaining wall 1 is changed into a downward slope, that is, the retaining structure 100 of the present embodiment is a downward slope retaining structure, but the active soil pressure borne by a general downward slope retaining structure is large, and it is difficult to effectively reinforce the slope and the steep slope embankment, in order to solve the problem, the retaining structure 100 of the present embodiment is provided with a plurality of foundation piles 3, and rock formations in the rock mass are generally divided into residual soil layers, full rock formations, strongly weathered rock formations, medium weathered rock formations, weakly weathered rock formations, and non-rock formations from inside to outside according to different rock weathered degrees, and the foundation piles 3 of the present embodiment need to be anchored at least in the strongly weathered rock formations to improve the stability of the retaining structure 100. In addition, a bearing platform 2 is further arranged in the supporting and retaining structure 100 of the embodiment, the foundation piles 3 are connected with the bearing platform 2, coordination can be carried out through the bearing platform 2, active soil pressure borne by the retaining wall 1 is transmitted to the foundation piles 3, then the foundation piles 3 transmit corresponding loads to soil layers or rock stratums with relatively high deep parts and relatively low compressibility of the foundation, and therefore the supporting and retaining structure 100 of the embodiment is safe and reliable in stress and good in stability, slope collection and reinforcement can be effectively carried out on slopes and steep slope embankments, and foundation settlement and differential deformation can be reduced. In another embodiment, foundation piles 3 may be anchored in weakly weathered rock formations to further improve the stability of the retaining structure.

Referring to fig. 1 and fig. 2, compared with the inclined supporting structure 100', the inclined supporting structure 100 of the present embodiment is disposed closer to the roadbed side (i.e. the slope and the steep slope side), and the distance L2 between the supporting structure 100 and the constrained object is wider, so that the supporting structure 100 of the present embodiment can save the range of the transverse land, and well solve the problem of slope retraction of the slope and the steep slope on the constrained road, so that the supporting structure 100 can be far away from the existing constrained object, thereby effectively improving the installation condition of the supporting structure 100, and while avoiding affecting the existing constrained object, effectively avoiding the situations of changing the route, changing the bridge engineering, or changing the road, river channel, and removing the building.

The retaining wall 1 of the embodiment can be flexibly adjusted according to the conditions of terrain conditions, filling height and the like so as to adapt to different soil bodies. Preferably, the slope ratio of the back slope 1a of the embodiment is 1: 0.1-0.3.

The foundation pile 3 of this embodiment is a foundation stressed foundation pile, and on the premise that the length of the foundation pile 3 is at least anchored in a strongly weathered rock formation, the dimensions such as the diameter, the pile length, the pile spacing, and the like of the foundation pile 3 may be determined according to the actual stress requirement of the retaining structure 100, and the specific calculation method is common knowledge in the art and is not described herein again.

Referring to fig. 3, the retaining wall 1, the bearing platform 2 and the foundation pile 3 of the present embodiment are rigidly connected.

Specifically, the retaining structure of this embodiment is a reinforced concrete structure. Compared with the inclined retaining structure 100', the stress condition of the whole retaining structure 100 is changed after the slope ratio of the surface slope 1b and the slope ratio of the back slope 1a of the retaining wall 1 of the embodiment are changed, so that higher requirements on the compression resistance, bending resistance and the like of the retaining structure 100 are provided, and the retaining wall 1, the bearing platform 2 and the foundation pile 3 which are rigidly connected can have good compression resistance, bending resistance and the like, so that the load borne by the retaining wall 1 can be better transmitted to the foundation pile 3.

Referring to fig. 2 and fig. 3, the surface slope 1b of the retaining wall 1 of the present embodiment is a vertical surface, and the vertical surface slope 1b can further save the installation space of the retaining wall 1.

Referring to fig. 3, a plurality of foundation piles 3 are arranged in two rows along the width direction of the bearing platform 2, and the two rows of foundation piles 3 are arranged in parallel at intervals.

Specifically, six foundation piles 3 are provided in the present embodiment, six foundation piles 3 are arranged in two rows in the width direction of the bearing platform 2 and in three rows in the length direction of the bearing platform 2, and six foundation piles 3 are arranged in parallel at intervals in both the width direction and the length direction of the bearing platform 2. Due to the arrangement mode, the stress of the foundation pile 3 can be more balanced, and the stability of the retaining structure 100 can be improved. It can be understood that the foundation piles 3 can adjust the number of rows along the width and length directions of the bearing platform 2 according to the load magnitude that they need to bear, the height of the retaining wall 1, the foundation condition, etc. to ensure the stability of the retaining structure 100 in the length and width directions, thereby making the arrangement of the retaining structure 100 more flexible. In addition, since the bearing platform 2 can play a role in coordination between the retaining wall 1 and the foundation piles 3, the retaining structure 100 of the present embodiment can reduce the number of the foundation piles 3 as much as possible, thereby saving the construction investment.

The foundation pile 3 of the present embodiment may employ a dug pile and a bored pile according to different geological conditions. When the foundation pile 3 is positioned in the soluble rock section, a drilled pile is preferably selected, and a drilled cast-in-place pile is preferably selected; when foundation pile 3 is located in the non-soluble rock section, a manual hole digging pile is preferably used.

The main construction method of the retaining structure 100 provided by the embodiment is as follows:

(1) before construction, correspondingly treating a construction site, for example, leveling the site, setting corresponding facilities, performing temporary protection and the like;

(2) constructing the foundation pile 3, and carrying out quality inspection (inspecting integrity of a pile body, bearing capacity of a single pile and the like) after pile forming is finished;

(3) excavating a foundation trench of the bearing platform 2, binding the reinforcing steel bars of the bearing platform 2 and the retaining wall 1 at one time, installing and forming, erecting a mold, and then pouring at one time; in the construction process, filling soil is needed to be filled on the back slope 1a side of the retaining wall 1, and the filling soil is filled and compacted along with the construction of the retaining wall 1 in a layered manner; the retaining wall 1 is not easy to be interrupted in the height direction, and needs to be maintained and demoulded according to requirements;

(4) the bearing platform 2 and the retaining wall 1 are subjected to field inspection, the defects of smooth appearance, no crack, rib leakage, corner drop and the like are met, and the strength requirement is met.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A retaining structure, characterized in that, retaining structure includes:

the slope of a back slope of the retaining wall is a depression slope type;

the bearing platform is connected with the retaining wall;

the foundation piles are connected with the bearing platform and are positioned on one side, far away from the retaining wall, of the bearing platform; the foundation pile is anchored at least in a strongly weathered rock formation.

2. The retaining structure of claim 1, wherein the slope ratio of the back slope is 1: 0.1-0.3.

3. The retaining structure of claim 1 or 2, wherein the surface slope of the retaining wall is a vertical surface.

4. The retaining structure of claim 1 or 2, wherein the plurality of foundation piles are arranged in two rows in the width direction of the pile cap, the two rows being arranged in parallel and spaced apart.

5. The retaining structure of claim 4, wherein the number of foundation piles is six, the six foundation piles are arranged in three rows along the length direction of the bearing platform, and the three rows of foundation piles are arranged in parallel at intervals.

6. A retaining structure according to claim 1 or 2, wherein the foundation pile is a dug pile or a bored pile.

7. An retaining structure according to claim 1 or 2, characterized in that the foundation piles are anchored in a weakly weathered rock formation.

8. The retaining structure of claim 1 or 2, wherein the retaining wall, the bearing platform and the foundation pile are rigidly connected.

9. The retaining structure of claim 8, wherein the retaining structure is a reinforced concrete structure.

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