Slope supporting structure and construction method thereof

Abstract

The invention discloses a slope supporting structure and a construction method thereof. The slope supporting structure comprises a base and backfill soil on the base, a plurality of rows of vertical connecting pieces are arranged on the inner side of the backfill soil in a supported mode, layered anchoring plates are arranged on the vertical connecting pieces and connected with the inner ends of transverse connecting cables, the outer ends of the transverse connecting cables are connected with prefabricated frame beams, and the prefabricated frame beams are arranged on the outer side of the backfill soil in a supported mode. According to the construction method, the slope supporting structure is formed. The self-supporting structure has the beneficial effects that the self weight of the soil body acts on the anchoring plates and the vertical connecting pieces on the inner side of the backfill soil, the prefabricated frame beams on the outer side of the backfill soil are pulled through the transverse connecting cables, the self-supporting structure of the backfill soil is formed, the additional construction modes of wall building, piling or drilling are avoided, and the difficulty of slope supporting operation is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of slope construction, and specifically relates to a slope support structure and a construction method thereof. Background Art

[0002] In some areas, land resources are scarce, mountains and hills are widely distributed, and there are fewer land resources that can be directly used. Fill slopes will appear during the excavation and filling process. Since the backfill soil is loose and uneven, the management of fill slopes has always been a difficult problem in slope management. At present, the main means of managing fill slopes are retaining walls, support piles, anchor rods, etc. These management methods are costly, and it is difficult to achieve the expected results during use due to external weather problems such as rain. In addition, the hydrogeological conditions in the region are relatively complex, and soft soils such as silt are often found at the bottom of slopes and gullies, making drainage more difficult. The backfill soil layer of this type of soft foundation is thick, which further increases the difficulty of slope management. Summary of the invention

[0003] The purpose of this application is to provide a slope support structure and a construction method thereof, which solves the problem of high difficulty and poor effect of existing slope support.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] A slope support structure comprises a base and backfill soil on the base, wherein the inner side of the backfill soil is supported by a plurality of rows of vertical connectors, layered anchor plates are arranged on the vertical connectors, the anchor plates are connected to the inner ends of transverse connecting cables, the outer ends of the transverse connecting cables are connected to prefabricated frame beams, and the prefabricated frame beams are supported on the outer side of the backfill soil.

[0006] Furthermore, the backfill soil is layered backfill soil, and the anchor plates are arranged on the layers of the backfill soil.

[0007] Furthermore, a longitudinal connecting piece is connected between two longitudinally adjacent anchor plates.

[0008] Furthermore, the transverse connecting cables are steel bars or anchor cables.

[0009] Furthermore, the surface of the vertical connector is provided with grouting holes, the transverse connector is sleeved on the transverse connecting rope, the surface of the transverse connector is provided with grouting holes, and the vertical connector and the transverse connector are both cast and connected in the backfill soil.

[0010] Furthermore, the outer ends of the transverse connecting cables are cast and connected to the hollow steel bar nodes of the prefabricated frame beams.

[0011] Furthermore, the prefabricated frame beams are arranged in a slope shape.

[0012] A construction method for a slope support structure comprises the following steps:

[0013] The first step is to determine the number of backfill layers and the layer thickness of the backfill soil, and the number of backfill layers is at least one layer;

[0014] The second step is to place anchor plates and transverse connecting cables on the base, with the anchor plates arranged inside the backfill area, and connect the anchor plates to the inner ends of the transverse connecting cables;

[0015] The third step is to repeat the second step in the longitudinal direction to arrange a plurality of anchor plates and transverse connecting cables at intervals;

[0016] Step 4: Install vertical connectors on the anchor plate of the base;

[0017] Step 5, repeating step 4 in the longitudinal direction to arrange a plurality of rows of vertical connectors at intervals;

[0018] Step 6: Fill a layer of backfill soil in the backfill area;

[0019] Step 7: placing anchor plates and transverse connecting cables on the backfill soil layer, connecting the anchor plates to the vertical connecting pieces, and connecting the anchor plates to the inner ends of the transverse connecting cables;

[0020] Step 8, repeating step 7 in the longitudinal direction to arrange a plurality of anchor plates and transverse connecting cables at intervals;

[0021] Step 9, repeat steps 6 to 8 until all backfill soil is backfilled in layers;

[0022] The tenth step is to place the prefabricated frame beam outside the backfill area and connect the outer end of the transverse connecting cable to the prefabricated frame beam.

[0023] Furthermore, in the third and eighth steps, a longitudinal connecting piece is connected between two longitudinally adjacent anchor plates.

[0024] Furthermore, in the second and seventh steps, transverse connectors are mounted on the transverse connecting cables. In the ninth step, after all the backfill soil is backfilled in layers, grouting is injected into the backfill soil through the grouting holes on the surfaces of the vertical connectors and the transverse connectors to cast and connect the vertical connectors and the transverse connectors in the backfill soil.

[0025] Furthermore, in the tenth step, the outer end of the transverse connecting cable is extended to the hollow steel bar node of the prefabricated frame beam, and then a formwork is set up at the hollow steel bar node and concrete is poured to connect the transverse connecting cable to the prefabricated frame beam by casting.

[0026] Beneficial effects of this application:

[0027] (1) The deadweight of the soil is applied to the anchor plates and vertical connectors on the inner side of the backfill soil. The prefabricated frame beams on the outer side of the backfill soil are pulled by transverse connecting cables to form a self-supporting structure of the backfill soil. This avoids the need for additional wall construction, piling or drilling, and reduces the difficulty of slope support operations.

[0028] (2) The overall support structure forms a self-limiting structure, and the horizontal connectors and vertical connectors are anchored in the backfill soil by grouting, which can increase the friction between the backfill soil and the connectors and improve the overall support strength and support capacity.

[0029] (3) The prefabricated frame beam adopts a reinforced concrete grid structure, which has a complete and uniform support effect on the slope and forms a hollow structure at the node. The hollow steel node and the transverse connecting cable are subsequently cast as one, which is convenient for construction operation and the connection strength is reliable and stable.

[0030] The aforementioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application; and in the present application, (non-conflicting options) can also be freely combined with each other and with other options. After understanding the scheme of the present application, those skilled in the art can understand that there are many combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural isometric view (front view) of the present application.

[0032] Figure 2 It is a structural axonometric view (rear view) of the present application.

[0033] Figure 3 It is a schematic diagram of the connection structure of the anchor plate of the present application.

[0034] Figure 4 It is a schematic diagram of the connection structure of the hollow steel bar node of this application.

[0035] In the figure: 1-base, 2-anchor plate, 3-vertical connector, 4-transverse connecting cable, 5-transverse connector, 6-prefabricated frame beam, 7-hollow steel bar node, 8-backfill soil. DETAILED DESCRIPTION

[0036] The following non-limiting examples are provided to illustrate the present application.

[0037] Example 1

[0038] refer to Figure 1 to Figure 4 As shown, a slope support structure includes a base 1, an anchor plate 2, a vertical connector 3, a transverse connecting cable 4, a transverse connector 5, a longitudinal connector, a prefabricated frame beam 6, a hollow steel bar node 7 and backfill soil 8.

[0039] The backfill soil 8 is on the base 1, and the backfill soil 8 forms a slope structure, that is, the inner side of the backfill soil 8 is in contact with the original soil body, and the outer side of the backfill soil 8 forms a slope. The backfill soil 8 is layered backfill soil, and backfilling is performed layer by layer during backfilling to ensure that the soil body is backfilled densely and has reliable stability.

[0040] The inner side of the backfill soil 8 is supported by a plurality of vertical connectors 3, which are tube structures and are used to connect and fix the anchor plates 2 of the row as a whole, and are also used for subsequent grouting operations. The layered anchor plates 2 are arranged on the vertical connectors 3, and the anchor plates 2 are in a horizontal state. The anchor plates 2 are welded and fixed on the vertical connectors 3, so that a force-bearing end under the action of deadweight is formed on the inner side of the backfill soil 8.

[0041] The anchor plate 2 is arranged at the level of the backfill soil 8, and the surface layer includes the bottom surface of the bottom backfill soil 8, the overlapping surface of two adjacent backfill soil layers 8, and the top surface of the top backfill soil 8. The anchor plate 2 is arranged in at least two layers, and the specific number of layers of the anchor plate 2 is determined according to the number of layers of the backfill soil 8. If the backfill soil 8 is at least one layer, then the anchor plate 2 has one more layer than the backfill soil 8, that is, at least two layers.

[0042] Depending on whether strength is required, the longitudinal connector is connected or not between two adjacent longitudinal anchor plates 2. The longitudinal connector is a tube structure. The longitudinal connector can be welded to the anchor plate 2 or screwed to the anchor plate 2. The longitudinal connector connects all the inner anchor plates 2 and the vertical connector 3 into one, thereby improving the integrity of the support and optimizing the support strength.

[0043] The anchor plate 2 is fixedly connected to the inner end of the transverse connecting cable 4, and the transverse connecting cable 4 is fixedly connected to the prefabricated frame beam 6. The deadweight of the inner side is transmitted to the outer side of the prefabricated frame beam 6 through the transverse connecting cable 4, so as to ensure that the prefabricated frame beam 6 can stably support the slope. The transverse connecting cable 4 is a steel bar or an anchor cable. When the transverse connecting cable 4 is a steel bar, the anchor plate 2 is connected to it through a threaded hole. When the transverse connecting cable 4 is an anchor cable, the anchor plate 2 is connected to it through a hook.

[0044] The vertical connector 3 is a tube structure with grouting holes on the surface. The transverse connector 5 is sleeved on the transverse connecting cable 4. The transverse connector 5 is a tube structure with grouting holes on the surface. The inner end of the transverse connector 5 is inserted into the groove of the anchor plate 2.

[0045] After the backfill soil is backfilled, grouting is injected into the surrounding soil through the vertical connectors 3 and the horizontal connectors 5, so that the slurry penetrates into the soil through the holes on the connectors. The soil and the slurry are mixed to form an expansion body, thereby increasing the friction resistance, so that the vertical connectors 3 and the horizontal connectors 5 are cast and connected in the backfill soil 8.

[0046] The prefabricated frame beam 6 is arranged outside the backfill soil 8 and is arranged in a slope shape with the slope of the backfill soil 8. The prefabricated frame beam 6 adopts a grid structure of reinforced concrete to achieve uniform and complete support enclosure for the slope of the backfill soil 8. Hollow steel bar nodes 7 are reserved on the prefabricated frame beam 6, and the outer ends of the transverse connecting cables 4 are cast and connected to the hollow steel bar nodes 7 of the prefabricated frame beam 6, which is convenient for operation and can also form a consistent appearance.

[0047] Example 2

[0048] A construction method for a slope support structure, to form the support structure of Example 1, comprises the following steps: a first step, according to the test combined with the construction requirements, determining the number of backfill layers and layer thickness of the backfill soil 8, the number of backfill layers being at least one layer.

[0049] The second step is to level the site and horizontally place the anchor plate 2 and the transverse connecting cable 4 on the base 1. The anchor plate 2 is arranged horizontally inside the backfill area. The anchor plate 2 is fixedly connected to the inner end of the transverse connecting cable 4. When the transverse connecting cable 4 is a steel bar, the anchor plate 2 is connected to it through a threaded hole. When the transverse connecting cable 4 is an anchor cable, the anchor plate 2 is connected to it through a hook.

[0050] A transverse connector 5 is sleeved on the transverse connecting cable 4 , the inner end of the transverse connector 5 is inserted into the groove of the anchor plate 2 , and grouting holes are arranged on the surface of the transverse connector 5 .

[0051] In the third step, the second step is repeated in the longitudinal direction to arrange a plurality of anchor plates 2 and transverse connecting cables 4 at intervals. A longitudinal connecting piece is connected between two adjacent anchor plates 2 in the longitudinal direction to connect the anchor plates 2 in the same layer into one.

[0052] In the fourth step, the vertical connector 3 is installed on the anchor plate 2 of the base 1, and the anchor plate 2 is welded to the vertical connector 3, and grouting holes are arranged on the surface of the vertical connector 3.

[0053] The fifth step is to repeat the fourth step in the longitudinal direction to arrange a plurality of rows of vertical connecting members 3 at intervals.

[0054] Step 6: fill a layer of backfill soil 8 in the backfill area.

[0055] In the seventh step, the anchor plate 2 and the transverse connecting cable 4 are horizontally placed on the backfill soil 8 layer, the anchor plate 2 is fixedly connected to the vertical connecting member 3, the anchor plate 2 is in a horizontal state, and the anchor plate 2 is fixedly connected to the inner end of the transverse connecting cable 4. The transverse connecting cable 4 is sleeved with the transverse connecting member 5.

[0056] Step 8: Repeat step 7 in the longitudinal direction to arrange a plurality of anchor plates 2 and transverse connecting cables 4 at intervals. Connect longitudinal connectors between two adjacent anchor plates 2 in the longitudinal direction to connect the anchor plates 2 in the same layer into one.

[0057] In the ninth step, steps 6 to 8 are repeated until all the backfill soil 8 is backfilled in layers. After all the backfill soil 8 is backfilled in layers, grouting is injected into the backfill soil 8 through the grouting holes on the surfaces of the vertical connectors 3 and the horizontal connectors 5 to cast and connect the vertical connectors 3 and the horizontal connectors 5 in the backfill soil 8.

[0058] The tenth step is to place the prefabricated frame beam 6 outside the backfill area and connect the outer end of the transverse connecting cable 4 to the prefabricated frame beam 6. Specifically, the outer end of the transverse connecting cable 4 is extended to the hollow steel bar node 7 of the prefabricated frame beam 6, and then a template is set up at the hollow steel bar node 7 and concrete is poured to connect the transverse connecting cable 4 to the prefabricated frame beam 6 by pouring.

[0059] The aforementioned basic examples and their further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed for protection in this application. In the scheme of this application, each selected example can be arbitrarily combined with any other basic examples and selected examples.

[0060] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A slope support structure, comprising a base (1) and backfill soil (8) on the base (1), characterized in that: The inner side of the backfill soil (8) is supported by a plurality of rows of vertical connecting members (3), on which layered anchor plates (2) are arranged, the anchor plates (2) are connected to the inner ends of the transverse connecting cables (4), the outer ends of the transverse connecting cables (4) are connected to the prefabricated frame beams (6), and the prefabricated frame beams (6) are supported on the outer side of the backfill soil (8).

2. The slope support structure according to claim 1, characterized in that: The backfill soil (8) is layered backfill soil, and the anchor plate (2) is arranged on the layer of the backfill soil (8).

3. The slope support structure according to claim 1, characterized in that: A longitudinal connecting piece is connected between two longitudinally adjacent anchoring plates (2).

4. The slope support structure according to claim 1, characterized in that: The transverse connecting rope (4) is a steel bar or an anchor rope.

5. The slope support structure according to claim 1, characterized in that: The surface of the vertical connector (3) is provided with grouting holes, the transverse connector (5) is sleeved on the transverse connecting cable (4), the surface of the transverse connector (5) is provided with grouting holes, and the vertical connector (3) and the transverse connector (5) are both cast and connected in the backfill soil (8).

6. The slope support structure according to claim 1, characterized in that: The outer ends of the transverse connecting cables (4) are cast and connected to the hollow steel bar nodes (7) of the prefabricated frame beams (6).

7. A construction method for a slope support structure, characterized in that: The steps include: The first step is to determine the number of backfill layers and the layer thickness of the backfill soil (8), wherein the number of backfill layers is at least one layer; The second step is to place an anchor plate (2) and a transverse connecting cable (4) on the base (1), wherein the anchor plate (2) is arranged inside the backfill area, and the anchor plate (2) is connected to the inner end of the transverse connecting cable (4); The third step is to repeat the second step in the longitudinal direction to arrange a plurality of anchor plates (2) and transverse connecting cables (4) at intervals; Step 4: placing a vertical connection member (3) on the anchor plate (2) of the base (1); Step 5, repeating the step 4 in the longitudinal direction to arrange a plurality of rows of vertical connecting members (3) at intervals; Step 6, backfilling a layer of backfill soil (8) in the backfill area; Step 7: placing the anchor plate (2) and the transverse connecting cable (4) on the backfill soil (8) layer, connecting the anchor plate (2) to the vertical connecting member (3), and connecting the anchor plate (2) to the inner end of the transverse connecting cable (4); Step 8, repeating step 7 in the longitudinal direction to arrange a plurality of anchor plates (2) and transverse connecting cables (4) at intervals; Step 9, repeating steps 6 to 8 until all the backfill soil (8) is backfilled in layers; The tenth step is to place a prefabricated frame beam (6) outside the backfill area and connect the outer end of the transverse connecting cable (4) to the prefabricated frame beam (6).

8. The construction method of the slope support structure according to claim 7 is characterized in that: In the third and eighth steps, a longitudinal connecting piece is connected between two longitudinally adjacent anchor plates (2).

9. The construction method of the slope support structure according to claim 7, characterized in that: In the second and seventh steps, the transverse connector (5) is sleeved on the transverse connecting cable (4). In the ninth step, after all the backfill soil (8) is backfilled in layers, grouting is injected into the backfill soil (8) through the grouting holes on the surfaces of the vertical connector (3) and the transverse connector (5), so as to cast and connect the vertical connector (3) and the transverse connector (5) in the backfill soil (8).

10. The construction method of the slope support structure according to claim 7, characterized in that: In the tenth step, the outer end of the transverse connecting cable (4) is extended to the hollow steel bar node (7) of the prefabricated frame beam (6), and then a template is set up at the hollow steel bar node (7) and concrete is poured to connect the transverse connecting cable (4) and the prefabricated frame beam (6) by pouring.

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