CN113605411A - Slope combined reinforcing structure and slope reinforcing construction method - Google Patents
Slope combined reinforcing structure and slope reinforcing construction method Download PDFInfo
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- CN113605411A CN113605411A CN202110821508.8A CN202110821508A CN113605411A CN 113605411 A CN113605411 A CN 113605411A CN 202110821508 A CN202110821508 A CN 202110821508A CN 113605411 A CN113605411 A CN 113605411A
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 title abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 66
- 239000010959 steel Substances 0.000 claims abstract description 66
- 230000002787 reinforcement Effects 0.000 claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 229910000746 Structural steel Inorganic materials 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 238000009415 formwork Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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Abstract
The invention discloses a slope combined reinforcement structure and a slope reinforcement construction method, wherein a drill hole for accommodating a pulling-resistant piece is formed, and then a foundation groove for accommodating a sliding-resistant key is excavated; erecting a template of the anti-sliding key, manufacturing a reinforcement cage of the slope combined reinforcement structure, hoisting the reinforcement cage, inserting the steel bar of the anti-pulling piece into the drill hole, and positioning the steel bar of the anti-sliding key in the foundation trench and the template; pouring concrete, vibrating to compact, and removing the mold after curing; and (4) filling the prepared filler into the roadbed layer by layer, and rolling and tamping. According to the slope combined reinforcing structure and the slope reinforcing construction method, the tensile stress of the slope combined reinforcing structure is mainly borne by the web plate, the compressive stress is mainly borne by the flange plate, and most of concrete is located in the flange plate, so that the compressive property of the concrete is fully exerted, the material of the concrete is fully exerted, and the anti-pulling piece is installed, so that the anti-overturning capability of the structure is remarkably improved on the premise of being more economical.
Description
Technical Field
The invention relates to the technical field of slope protection, in particular to a slope combined reinforcement structure and a slope reinforcement construction method.
Background
When projects such as highways or railways are built in mountainous areas, because of large relief of topography, the roadbed is often processed in a high-excavation low-filling mode, namely, part of mountain bodies higher than the designed elevation of the pavement are excavated and backfilled to the valley lower than the designed elevation of the pavement, so that a roadbed surface with a certain width is formed to meet the project requirements. The construction method causes a plurality of fill subgrade slope projects, and the stability of the fill subgrade slope projects is very important to the construction and operation safety of road projects. For this reason, a certain support measure is usually taken for the roadbed slope to be filled.
At present, measures for roadbed filling and slope protection mainly comprise anti-sliding keys, retaining walls, anti-sliding piles and combined structures thereof. Traditional retaining wall, friction pile or supporting construction such as joint anchoring rely on the mechanical properties of structure self to support whole side slope ground body completely, because whole slope body is great, cause the load of applying on supporting construction huge to the retaining wall or the friction pile structure size that design is great, lead to the engineering cost high.
The anti-sliding key is a supporting structure with the lower part embedded in the stable bedrock and the upper part embedded in the slope body to be reinforced. The anti-sliding key is specially used for supporting potential sliding surfaces of filling slopes, and other stable areas are not supported or weakly supported, so that the designed anti-sliding key structure is lighter and lighter than a traditional retaining wall or anti-sliding pile structure, and the construction cost is lower. Particularly, for the slope engineering of the filling subgrade in mountainous areas, the anti-sliding keys are adopted on the interface of the original bedrock and the filling for supporting, so that the method is more suitable for supporting.
However, the traditional anti-sliding key is of an integral columnar structure, unreasonable stress is caused, materials cannot be exerted, and the traditional anti-sliding key is prone to overturning, so that slope protection failure is caused.
Disclosure of Invention
Therefore, it is necessary to provide a slope combination reinforcing structure and a slope reinforcing construction method for solving the problems that the conventional anti-sliding key structure is unreasonable in stress and is easy to overturn.
A slope composite reinforcement structure comprising:
the anti-sliding key is used for being partially embedded into bedrock and comprises a web plate used for being pulled and a flange plate used for being pressed, the flange plate is provided with a flange plate inner face facing to the top of the slope and a flange plate outer face facing to the bottom of the slope, the web plate is connected with the flange plate inner face of the flange plate, the web plate extends along the depth direction of the slope, and the flange plate at least exceeds one side of the web plate; and
and the anti-pulling piece is embedded in the bedrock and connected with the web plate.
In one embodiment, the surface of the web plate far away from the inner face of the flange plate is an inclined surface, and the distance between the inclined surface and the inner face of the flange plate in the depth direction of the slope is gradually increased.
In one embodiment, the web is perpendicular to the outer face of the flange plate, the flange plate extending beyond opposite sides of the web.
In one embodiment, the distance between the inner face of the flange plate and the outer face of the flange plate gradually increases from the edge of the flange plate to the web.
In one embodiment, a first longitudinal steel bar is arranged in the web plate, a construction steel bar is arranged in the flange plate, and the first longitudinal steel bar and the construction steel bar are connected through a first stirrup.
In one embodiment, the pulling-resistant piece is a pulling-resistant pile, a bolt or a prestressed anchor cable.
In one embodiment, the anti-pulling piece is an anti-pulling pile, and a second longitudinal steel bar is arranged in the anti-pulling pile.
A slope reinforcement construction method adopts any one of the slope combination reinforcement structures, and comprises the following steps:
drilling holes for accommodating the pulling-resistant pieces, and then excavating a base groove for accommodating the anti-sliding key;
erecting a template of the anti-sliding key, manufacturing a reinforcement cage of a slope combined reinforcement structure, hoisting the reinforcement cage, inserting the steel bar of the anti-pulling piece into the drilled hole, and positioning the steel bar of the anti-sliding key in the foundation trench and the template;
pouring concrete, vibrating to compact, and removing the mold after curing;
and (4) filling the prepared filler into the roadbed layer by layer, and rolling and tamping.
In one embodiment, the step of manufacturing the reinforcement cage of the slope combined reinforcement structure specifically includes:
bending the steel bars to obtain first longitudinal steel bars and second longitudinal steel bars, connecting the first longitudinal steel bars with the structural steel bars through first stirrups, and connecting a plurality of second longitudinal steel bars through second stirrups; or
And welding and connecting the second longitudinal steel bars with the first longitudinal steel bars, connecting the first longitudinal steel bars with the construction steel bars through the first stirrups, and connecting a plurality of the second longitudinal steel bars through the second stirrups.
In one embodiment, the step of applying a bore hole for receiving the pulling-resistant member and then excavating a foundation trench for receiving the sliding-resistant key further comprises:
and cleaning soft soil layers, shrubs, weeds and garbage on the surface of the bedrock, and measuring and determining the central point of the anti-pulling part and the boundary line of the base groove at the bottom of the anti-sliding key according to a construction drawing.
The slope combined reinforcement structure and the slope reinforcement construction method at least have the following advantages:
1. the tensile stress of the slope combined reinforcing structure is mainly born by the web plate, the compressive stress is mainly born by the flange plate, and most of concrete is positioned on the flange plate, so that the compressive property of the concrete is fully exerted, and the material of the concrete is fully exerted.
2. In the slope combined reinforcing structure, the distance between the inclined plane and the inner surface of the flange plate is gradually increased, and the section of the web plate is increased and enlarged along the depth direction of the slope, so that the internal force of the structure is better matched, the stress of the structure is more reasonable, and materials are fully exerted.
3. The anti-pulling piece is arranged on the slope combined reinforcing structure, so that the anti-overturning capability of the structure is obviously improved on the premise of being more economical.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
FIG. 1 is a schematic view of a slope reinforcing structure mounted on a slope according to an embodiment;
FIG. 2 is a schematic view of a planar section of the slope reinforcing structure shown in FIG. 1 installed on a slope;
FIG. 3 is a schematic structural view of the slope reinforcement structure of FIG. 1;
FIG. 4 is a structural diagram of reinforcing bars inside the slope combination reinforcing structure shown in FIG. 3;
FIG. 5 is a cross-sectional view of the anti-slide key of FIG. 3;
FIG. 6 is a cross-sectional view of the anti-pull element of FIG. 3;
fig. 7 is a flowchart of a slope reinforcement construction method according to an embodiment.
Reference numerals:
10-slope combined reinforcement structure, 11-anti-sliding keys, 112-web plates, 1122-inclined surfaces, 114-flange plates, 1142-inner surfaces of the flange plates, 1144-outer surfaces of the flange plates, 12-anti-pulling pieces, 13-first longitudinal steel bars, 14-constructional steel bars, 15-first stirrups, 16-second longitudinal steel bars, 17-second stirrups, 20-bedrock, 30-fill slopes, 40-bedrock surfaces and 50-horse ways.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 3, a slope combination reinforcement structure 10 according to an embodiment is mainly suitable for roadbed fill slope protection. The slope combined reinforcing structure 10 can be arranged in a quincunx multi-row manner on a plane section, and the row number and the interval can be specifically set according to actual engineering. Specifically, the slope combination reinforcement structure 10 includes an anti-slip key 11 and an anti-pulling member 12.
The anti-sliding keys 11 are partially embedded in bedrock 20, and the upper part of the rock embedding area of the anti-sliding keys 11 is partially embedded in the overlying fill slopes 30. In one embodiment, the bottom of the anti-skid key 11 is embedded into the bedrock 20 to a depth of no less than 200 mm. The anti-sliding key 11 comprises a web plate 112 used for tension and a flange plate 114 used for compression, wherein the flange plate 114 is provided with a flange plate inner face 1142 facing the top of the slope and a flange plate outer face 1144 facing the bottom of the slope, the web plate 112 is connected with the flange plate inner face 1142, the web plate 112 extends along the depth direction of the slope, and the flange plate 114 at least exceeds one side of the web plate 112 so as to bear the internal pressure of the slope combined reinforcing structure.
In the embodiment, the anti-skid key 11 is in the form of the inverted T-shaped section, so that excessive concrete is prevented from participating in tension work, more concrete is placed in the compression area, the compression performance of the concrete can be fully exerted compared with the traditional rectangular or trapezoidal section, and the section arrangement form is very reasonable.
In one embodiment, the surface of the web 112 away from the inner flange surface 1142 is an inclined surface 1122, and the distance between the inclined surface 1122 and the inner flange surface 1142 increases gradually along the depth direction of the slope. The anti-sliding key 11 adopts a variable cross section form, namely the T-shaped cross section is gradually reduced from bottom to top, and the variable cross section form is quite reasonable in stress according to the stress characteristics of the cantilever beam, so that the performance of the material can be fully utilized.
In one embodiment, the web 112 is perpendicular to the flange plate outer face 1144, and the flange plate 114 extends beyond opposite sides of the web 112. The web 112 is perpendicular to the flange plate outer face 1144, which ensures the tension capability of the web 112. The flange plate 114 extends beyond the opposite sides of the web 112, and both sides of the flange plate 114 are compressed, so that the stability of the whole reinforcing structure on the side slope can be ensured.
Further, the distance between the inner face 1142 and the outer face 1144 increases gradually from the edge of the flange plate 114 to the web 112, i.e. the two sides of the flange plate 114 are thin and the portion connected to the web 112 is thick. This matches with the actual internal force that the flange plate 114 receives, namely the marginal internal force value of flange plate 114 is slightly less than the middle part of flange plate 114, therefore through this kind of mode of becoming thickness, make the concrete consumption match with actual internal force size, consequently, synthesize and saved the material consumption, reduced engineering cost.
Referring to fig. 4 and 5, in order to ensure that the strength of the anti-sliding key 11 in the slope meets the requirement, in one embodiment, under the action of the downward sliding force of the upper fill slope 30, the first longitudinal steel bar 13 is disposed in the web 112, the flange plate 114 is pressed only by disposing the structural steel bar 14, and the first longitudinal steel bar 13 and the structural steel bar 14 are connected together by the first stirrup 15. The reinforcement ratio of the first longitudinal steel bar 13 is greater than that of the structural steel bar 14, so that the tensile strength of the first longitudinal steel bar 13 can meet the bearing requirement of the slope combined reinforcement structure. The first stirrup 15 connects the first longitudinal reinforcement 13 and the construction reinforcement 14 by lashing or welding.
Referring also to fig. 6, the anti-pulling element 12 is used to be embedded in the bedrock 20, the top of the anti-pulling element 12 is connected with the web 112, and the anti-pulling element 12 is used to prevent the whole reinforced structure from overturning. The uplift element 12 may be an uplift pile, an anchor rod or a prestressed anchor cable. In this embodiment, the uplift member 12 is an uplift pile, a second longitudinal reinforcement 16 is provided in the uplift pile, and the second longitudinal reinforcements 16 are connected together by a second stirrup 17. The second longitudinal reinforcing bar 16 is connected with the first longitudinal reinforcing bar 13 of the anti-sliding key 11 so as to meet the requirement of tensile bearing capacity.
Specifically, the second longitudinal reinforcing bar 16 may be formed by bending the first longitudinal reinforcing bar 13, and the second longitudinal reinforcing bar 16 and the first longitudinal reinforcing bar 13 may also be separately disposed and welded together. The second stirrup 17 integrally connects the plurality of second longitudinal reinforcing bars 16 by banding or welding.
It should be noted that the dimensions of the anti-slide key 11 and the anti-pulling member 12 in the present embodiment are determined by checking calculation according to the height and gradient of the fill slope 30, the physical and mechanical properties of the fill, and the planar arrangement and dimensions of the anti-slide key 11.
Referring to fig. 7, the present invention further provides a slope reinforcement construction method, in which a slope combination reinforcement structure 10 is adopted to implement the construction method. Specifically, the construction method comprises the following steps:
step S110: a bore hole is made to accommodate the pull-out member 12 and then a base groove is excavated to accommodate the anti-slip key 11.
Specifically, a mechanical drilling mode is adopted to drill the pulling-resistant piece 12, and then a foundation trench at the bottom of the anti-sliding key 11 is excavated, wherein a mechanical excavation mode or a manual excavation mode can be adopted. Disturbance to the bedrock 20 is reduced as much as possible in the excavation process, and drainage and precipitation measures are made to keep the basement dry. Then, excess water in the drill hole and the base groove is pumped out, and crushed slag and the like are cleaned.
In one embodiment, before the step S110, the construction method further includes: cleaning soft soil layers, shrubs, weeds, garbage and the like on the surface 40 of the bedrock, and then determining the central point of the anti-pulling part 12 and the boundary line of the basal groove at the bottom of the anti-sliding key 11 by measurement according to a construction drawing.
In the embodiment, the early-stage configuration of the construction site is needed, the safety caps, the templates, the steel pipes, the scaffolds, the anchoring pull rods and the measuring instruments are configured, the personnel configuration is complete, the drilling machine, the loader, the rock drill, the excavator, the road roller, the pump truck and the like are connected in advance, the required concrete strength is determined, the excavation is completed, the continuous concrete pouring is carried out after the formwork supporting and reinforcement arrangement is completed, and the integrity of the member is ensured.
Step S120: erecting a template of the anti-sliding key 11, manufacturing a reinforcement cage of the slope combined reinforcement structure 10, hoisting the reinforcement cage, inserting the steel bars of the anti-pulling piece 12 into the drill hole, and positioning the steel bars of the anti-sliding key 11 in the foundation trench and the template.
Specifically, in the process of constructing the slope combined reinforced structure 10, a template of the anti-sliding key 11 needs to be installed and erected firstly, then a reinforcement cage of the slope combined reinforced structure 10 is manufactured according to a design drawing, and after the reinforcement cage is manufactured, the prefabricated reinforcement cage is hoisted to a design position in the template in the drilled hole.
In an embodiment, the second longitudinal reinforcing bars 16 and the first longitudinal reinforcing bars 13 may be integrally formed, so as to ensure the connection strength between the second longitudinal reinforcing bars 16 and the first longitudinal reinforcing bars 13, and ensure the strength and stability of the whole slope combined reinforced structure 10. It can be understood that the second longitudinal steel bar 16 and the first longitudinal steel bar 13 can also be split structures, so that the requirement of the steel bars can be reduced, and the difficulty in manufacturing the steel bar cage is reduced.
The second longitudinal steel bar 16 and the first longitudinal steel bar 13 have different structures, and the manufacturing process of the reinforcement cage of the slope combined reinforcement structure 10 is different. Specifically, when the second longitudinal steel bars 16 and the first longitudinal steel bars 13 are of an integrally formed structure, the steel bars are bent, the two bent steel bars are the second longitudinal steel bars 16 and the first longitudinal steel bars 13 respectively, the first longitudinal steel bars 13 are connected with the constructional steel bars 14 through the first stirrups 15, the second longitudinal steel bars 16 are connected through the second stirrups 17, and the reinforcement cage is manufactured.
When the second longitudinal steel bars 16 and the first longitudinal steel bars 13 are of split structures, the second longitudinal steel bars 16 and the first longitudinal steel bars 13 are connected in a welding mode, then the first longitudinal steel bars 13 and the construction steel bars 14 are connected through the first stirrups 15, the second longitudinal steel bars 16 are connected through the second stirrups 17, and the steel reinforcement cage is manufactured.
Step S130: and pouring concrete, vibrating to compact, solidifying and curing, and then stripping the mold.
Specifically, concrete is poured into the formwork, the foundation trench and the drill hole, then the concrete is vibrated and compacted, and the formwork is removed after curing for 3 days, so that the slope combined reinforced structure 10 is manufactured. After the form is removed, the construction quality of the slope combined reinforcement structure 10 is inspected, including appearance detection, crack detection, concrete strength detection, embedding effect detection and the like.
Step S140: and (4) filling the prepared filler into the roadbed layer by layer, and rolling and tamping.
Specifically, after the concrete is demolded and the quality detection is completed, the prepared filler is used for filling the roadbed in a layering manner, and rolling and tamping are carried out until the designed elevation is reached.
In this embodiment, the combined reinforced structure is constructed on the side slopes in multiple rows, and the multiple rows of side slope combined reinforced structures 10 are constructed sequentially, that is, after the first row of side slope combined reinforced structures 10 are constructed according to the above steps, the second row and the third row of … … combined reinforced structures are constructed sequentially, and the filling side slopes 30 are filled to the level of the top surface of the roadbed in layers sequentially.
Wherein, the slope grade of the filling side slope 30 can be obtained by checking and designing according to the filling concrete condition. When the filling height exceeds 5m, the filling slope 30 can adopt graded slope-releasing, and a berm 50 with a certain width is reserved between each grade. In order to prevent rainfall and groundwater from adversely affecting the stability of fill slope 30 and enhance slope stability, drainage systems may be provided within the fill slope and on the slope surface.
The slope combined reinforcement structure 10 and the slope reinforcement construction method have at least the following advantages:
1. the traditional anti-sliding key usually adopts a rectangular or trapezoidal section form, so that more concrete is positioned in a tension area to participate in tension work, the compression resistance of the concrete cannot be fully exerted, and the material of the concrete cannot be fully exerted. The anti-sliding key 11 of the invention adopts the inverted T-shaped section, so that the tensile stress of the section is mainly born by the first longitudinal steel bar 13 of the web plate 112, and most of the concrete is in a compression area, thereby fully exerting the compression resistance of the concrete and fully exerting the material thereof.
2. The cross section size of the traditional anti-sliding key is constant along the axis direction of the key body, and the reinforcing structure adopts a variable cross section form along the depth direction of the side slope, so that the internal force of the structure is better matched, the stress of the structure is more reasonable, and the materials are fully exerted.
3. The traditional anti-sliding key is easy to overturn when the rock embedding depth of the key base is insufficient, and if the rock embedding depth is simply increased, the project amount is increased greatly, and the project cost is increased. The anti-pulling piece 12 is additionally arranged on the reinforced structure, so that the anti-overturning capability of the structure is obviously improved on the premise of being more economical.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled 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 and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A slope combination reinforced structure, characterized by, includes:
the anti-sliding key is used for being partially embedded into bedrock and comprises a web plate used for being pulled and a flange plate used for being pressed, the flange plate is provided with a flange plate inner face facing to the top of the slope and a flange plate outer face facing to the bottom of the slope, the web plate is connected with the flange plate inner face of the flange plate, the web plate extends along the depth direction of the slope, and the flange plate at least exceeds one side of the web plate; and
and the anti-pulling piece is embedded in the bedrock and connected with the web plate.
2. The slope building reinforcement structure of claim 1, wherein the surface of the web facing away from the inner face of the flange plate is an inclined surface, and the distance between the inclined surface and the inner face of the flange plate in the depth direction of the slope gradually increases.
3. The slope building reinforcement structure of claim 1, wherein the web is perpendicular to the outer faces of the flange plates, the flange plates extending beyond opposite sides of the web.
4. The slope building reinforcement structure of claim 1, wherein the distance between the inner face of the flange plate and the outer face of the flange plate increases from the edge of the flange plate to the web.
5. The slope composite reinforcement structure according to claim 1, wherein a first longitudinal reinforcement is provided in the web, a structural reinforcement is provided in the flange plate, and the first longitudinal reinforcement and the structural reinforcement are connected by a first stirrup.
6. The slope building reinforcement structure of claim 1, wherein the anti-pulling element is an anti-pulling pile, an anchor rod or a pre-stressed anchor cable.
7. The slope composite reinforced structure of claim 1, wherein the anti-pulling element is an anti-pulling pile, and a second longitudinal steel bar is arranged in the anti-pulling pile.
8. A slope reinforcement construction method using the slope combination reinforcement structure according to any one of claims 1 to 7, comprising the steps of:
drilling holes for accommodating the pulling-resistant pieces, and then excavating a base groove for accommodating the anti-sliding key;
erecting a template of the anti-sliding key, manufacturing a reinforcement cage of a slope combined reinforcement structure, hoisting the reinforcement cage, inserting the steel bar of the anti-pulling piece into the drilled hole, and positioning the steel bar of the anti-sliding key in the foundation trench and the template;
pouring concrete, vibrating to compact, and removing the mold after curing;
and (4) filling the prepared filler into the roadbed layer by layer, and rolling and tamping.
9. The slope reinforcement construction method according to claim 8, wherein the step of manufacturing the reinforcement cage of the slope combination reinforcement structure is specifically:
bending the steel bars to obtain first longitudinal steel bars and second longitudinal steel bars, connecting the first longitudinal steel bars with the structural steel bars through first stirrups, and connecting a plurality of second longitudinal steel bars through second stirrups; or
And welding and connecting the second longitudinal steel bars with the first longitudinal steel bars, connecting the first longitudinal steel bars with the construction steel bars through the first stirrups, and connecting a plurality of the second longitudinal steel bars through the second stirrups.
10. The method of slope reinforcement construction according to claim 8, wherein the step of applying a bore hole for receiving a pulling member and then excavating a foundation trench for receiving a sliding key further comprises:
and cleaning soft soil layers, shrubs, weeds and garbage on the surface of the bedrock, and measuring and determining the central point of the anti-pulling part and the boundary line of the base groove at the bottom of the anti-sliding key according to a construction drawing.
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Application publication date: 20211105 |