CN109403170B - Steep slope road and construction method thereof - Google Patents
Steep slope road and construction method thereof Download PDFInfo
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- CN109403170B CN109403170B CN201811269820.5A CN201811269820A CN109403170B CN 109403170 B CN109403170 B CN 109403170B CN 201811269820 A CN201811269820 A CN 201811269820A CN 109403170 B CN109403170 B CN 109403170B
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- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000002689 soil Substances 0.000 claims abstract description 69
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 15
- 238000009432 framing Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 62
- 239000010959 steel Substances 0.000 claims description 62
- 239000010410 layer Substances 0.000 claims description 45
- 239000011150 reinforced concrete Substances 0.000 claims description 37
- 239000004567 concrete Substances 0.000 claims description 22
- 239000003365 glass fiber Substances 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 12
- 238000010008 shearing Methods 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 10
- 239000010426 asphalt Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 8
- 239000002344 surface layer Substances 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 claims description 2
- 230000009916 joint effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 description 24
- 238000009412 basement excavation Methods 0.000 description 10
- 239000004575 stone Substances 0.000 description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/002—Design or lay-out of roads, e.g. street systems, cross-sections ; Design for noise abatement, e.g. sunken road
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
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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
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Road Paving Structures (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention relates to the technical field of steep slope construction building structures, and provides a steep slope road and a construction method thereof, wherein the steep slope road comprises the following components: a plurality of anti-slide piles are arranged on the steep slope, the anti-slide piles are exposed out of the steep slope surface for one section, cantilever beams and balance plates which are arranged at equal heights are arranged at the upper end parts of the anti-slide piles, and the cantilever beams and the balance plates are respectively positioned on two opposite side surfaces of the anti-slide piles; a soil retaining plate which is vertically arranged is arranged between the adjacent anti-slide piles, and a soil backfill area is formed by the soil retaining plate and the balance plate; and constructing a parallel unequal-height bidirectional framing road through the cantilever beam and the soil backfill area. The abrupt slope road has light structure and strong abrupt slope terrain adaptability, and has good popularization and application prospect and social and economic value for newly-built roads or newly-built parallel riding roads, walkways, landscape green roads and the like in the abrupt slope section of the mountain area.
Description
Technical Field
The invention relates to the technical field of steep slope construction building structures, in particular to a steep slope road and a construction method thereof.
Background
The existing steep slope sections, road forms are basically divided into two road cross section forms: one is a parallel equal-height bidirectional road section form, and the other is a parallel unequal-height bidirectional framing road section form.
The former can appear that the inside cutting side slope is high, the excavation amount is large and the outside filling amount is large, the traditional cutting side slope at present often adopts structural forms such as high gravity retaining wall, pile plate wall and the like, but is limited by the retaining capacity, the retaining wall is not more than 8m at most, the pile plate wall is not more than 10m generally, even if a prestress anchor cable is added, the pile plate wall is not more than 15m, the lower retaining wall is not more than 10m generally, and if the weight retaining wall is higher, a pile foundation joist or a bearing platform is added, or the pile plate wall is adopted, even a bridge form is needed to be replaced, even so, the area and cost for land collapse symptom are greatly increased, the degree of water and soil loss is increased, and the geological disaster risk of landslide is increased;
if the latter is adopted, the land feature area is effectively reduced, the water and soil loss and the risk of landslide geological disasters are reduced, but a blocking and protecting project between upper and lower framing roads is required to be increased, the method has obvious advantages over the parallel equal-height road section form on the whole, but the civil engineering investment scale is not necessarily reduced or is not reduced obviously enough.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to provide a steep slope road and a construction method thereof, which aim to at least solve one of the technical problems existing in the prior art or related technologies.
(II) technical scheme
In order to solve the above technical problem, in a first aspect, the present invention provides a steep road comprising: a plurality of anti-slide piles are arranged on the steep slope, the anti-slide piles are exposed out of the steep slope surface for one section, cantilever beams and balance plates which are arranged at equal heights are arranged at the upper end parts of the anti-slide piles, and the cantilever beams and the balance plates are respectively positioned on two opposite side surfaces of the anti-slide piles; a soil retaining plate which is vertically arranged is arranged between the adjacent anti-slide piles, and a soil backfill area is formed by the soil retaining plate and the balance plate; and constructing a parallel unequal-height bidirectional framing road through the cantilever beam and the soil backfill area.
And constructing a first road on the upper surface of the soil backfill area.
Wherein, the steep slope above the first road surface is provided with a long anchor rod for permanent reinforcement; the steep slope below the first road surface is provided with a short anchor rod for temporary reinforcement.
And paving precast slabs on two adjacent cantilever beams to construct a second road.
The cantilever beam comprises a cantilever beam body and is characterized in that a pier column which is vertically placed is arranged below the cantilever beam body and used for supporting the cantilever beam body.
Wherein, the below of cantilever beam is provided with the bracing beam, the bracing beam is used for supporting the cantilever beam.
In a second aspect, the present invention provides a construction method for a steep slope road as described above, comprising: digging a plurality of pile holes on a steep slope, wherein the pile holes penetrate into the steep slope, placing steel bars which meet the specification and the size in the pile holes to form an anti-slide pile framework, exposing one section of the steep slope by the steel bars, arranging cantilever beam steel bars and balance plate steel bars at the upper end parts of the steel bars, and arranging retaining plate steel bars between adjacent steel bars;
pouring concrete into the anti-slide pile framework, the cantilever beam steel bars, the balance plate steel bars and the soil retaining plate steel bars which are integrally connected to form a reinforced concrete anti-slide pile, a reinforced concrete cantilever beam, a reinforced concrete balance plate and a reinforced concrete soil retaining plate;
and forming a soil backfill area through the reinforced concrete retaining plate and the reinforced concrete balance plate, filling soil into the soil backfill area, and constructing a parallel unequal-height bidirectional framing road through the reinforced concrete cantilever beam and the soil backfill area.
And concrete is poured into the anti-slide pile framework, the cantilever beam steel bars, the balance plate steel bars and the soil retaining plate steel bars which are integrally connected in a pumping mode.
And before the pile hole is excavated, firstly, carrying out slope cutting on the steep slope to form a slope cutting area, and excavating the pile hole at the bottom end of the slope cutting area.
The construction of the parallel unequal-height bidirectional framing road through the reinforced concrete cantilever beam and the soil backfill area is specifically as follows: and constructing a first road on the upper surface of the soil backfill area, and paving precast slabs on two adjacent reinforced concrete cantilever beams to construct a second road.
(III) beneficial effects
Compared with the prior art, the invention has the following advantages:
the invention provides a steep slope road and a construction method thereof, which are characterized in that a parallel road cross section form with unequal height and amplitude is adopted to reduce the filling and excavation, and a common anti-slide pile is arranged between an upper road and a lower road; in order to reduce the lower stop of a lower road and even the bridge structural form, the anti-slide piles between the separate roads are fully utilized, a balance plate and an overhanging beam connected with the anti-slide pile bodies are additionally arranged, precast slabs are paved on the overhanging beam, a pavement structural layer is applied on the precast slabs, the overhanging beam and the slab load on the upper part of the overhanging beam, the pedestrian load and the non-motor vehicle load are balanced by the balance plate and the upper filling load of the balancing plate, and the balance load area of the balance plate is determined according to the balance force generated by the required filling thickness and a certain amount of safety reserve is reserved. Compared with the parallel contour road structure form of the steep slope road and the steep slope section, the steep slope road has the advantages of obviously reducing the height of cutting side slope, reducing the downshifting scale and difficulty, reducing the bridge occupation ratio, and having obvious advantages in the aspects of earth and stone side, blocking and protecting masonry quantity and the levying scale; compared with the parallel unequal-height double-lower-baffle road structure, the road cutting and side slope height, the excavation amount and the support and baffle scale of the upper road are obviously reduced, the support and baffle measures of the lower road are omitted, the bridge occupation ratio is reduced, and the road cutting and baffle structure has obvious advantages in the aspects of earth and stone sides, the baffle and protection masonry amount and the levying scale; compared with the half-road and half-bridge road structure, the advantages are more obvious, the bridge occupation ratio is directly reduced, and the investment cost is obviously reduced.
Drawings
FIG. 1 is a schematic view of a steep slope road according to an embodiment of the invention;
FIG. 2 is a longitudinal plan view of a steep grade road according to an embodiment of the invention;
FIG. 3 is a schematic view of another steep slope road according to the embodiment of the invention;
FIG. 4 is a schematic view of a steep slope road according to an embodiment of the invention;
in the figure: 1-steep slope; 2-anti-slide piles; 3-cantilever beams; 4-balancing plates; 5-axilla; 6-long anchor rods; 7-short anchor rods; 8-soil backfilling areas; 9-a first road; 10-a soil blocking plate; 11-prefabricated panels; 12-pier column; 13-diagonal bracing beams.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
From the view of urban landscapes, the design of the rail transit structure with unique design can add a bright landscape to the city, and the urban landscapes become the image representation of the city. Currently, in urban rail transit lines throughout the world, overhead lines account for about more than half of the total number of lines. The urban rail transit with middle and low traffic volume laid in an overhead mode can become a stereoscopic and dynamic urban landscape, and can be organically combined with the whole ground traffic network and other urban landscapes to increase the dynamic sense and aesthetic feeling of the city.
Fig. 1 is a schematic structural diagram of a steep slope road according to an embodiment of the invention, as shown in fig. 1, the steep slope road comprises: a plurality of anti-slide piles 2 are arranged on the abrupt slope 1, the anti-slide piles 2 are exposed out of the abrupt slope surface for one section, cantilever beams 3 and balance plates 4 which are arranged at equal heights are arranged at the upper end parts of the anti-slide piles 2, and the cantilever beams 3 and the balance plates 4 are respectively positioned on two opposite side surfaces of the anti-slide piles 2; a soil retaining plate 10 which is vertically arranged is arranged between the adjacent anti-slide piles 2, and a soil backfill area 8 is formed by the soil retaining plate 10 and the balance plate 4; and constructing parallel unequal-height bidirectional framing roads through the cantilever beam 3 and the soil backfill area 8.
In this embodiment, the construction site of a general steep slope road is steep in slope angle, general heavy equipment is difficult to construct, a small manual construction platform is erected by manually entering the site, the construction of the slide-resistant pile 2 is performed first, the slide-resistant pile 2 is utilized to provide vertical bearing capacity, horizontal bearing capacity can be resisted, and the slide resistance and overall stability are provided.
In this embodiment, before the pile hole of the slide-resistant pile 2 is excavated, the steep slope is firstly cut to form a slope cutting area, and the pile hole is excavated at the bottom end of the slope cutting area. Pile holes vertically penetrate into steep slopes, and the distance between adjacent pile holes is 2-5 times the diameter of the pile holes. Placing steel bar columns meeting the specification and the size in pile holes to form an anti-slide pile framework, exposing a steep slope surface by one section of the steel bar columns, arranging cantilever beam steel bars and balance plate steel bars at the upper ends of the steel bar columns, integrally arranging the cantilever beam steel bars, the balance plate steel bars and the steel bar columns, and arranging retaining plate steel bars between adjacent steel bar columns;
pouring concrete into the integrally connected anti-slide pile framework, the cantilever beam steel bars, the balance plate steel bars and the soil retaining plate steel bars to form reinforced concrete anti-slide piles, reinforced concrete cantilever beams, reinforced concrete balance plates and reinforced concrete soil retaining plates;
and forming a soil body backfill area through the reinforced concrete retaining plate and the reinforced concrete balance plate, filling soil into the soil body backfill area, and constructing a parallel unequal-height bidirectional framing road through the reinforced concrete cantilever beam and the soil body backfill area.
In the embodiment, in order to reduce the filling and excavation, a parallel road cross section form with unequal height and amplitude is adopted, and a common anti-slide pile is arranged between an upper road and a lower road; in order to reduce the lower stop of a lower road and even the bridge structural form, the anti-slide piles between the separate roads are fully utilized, a balance plate and an overhanging beam connected with the anti-slide pile bodies are additionally arranged, precast slabs are paved on the overhanging beam, a pavement structural layer is applied on the precast slabs, the overhanging beam and the slab load on the upper part of the overhanging beam, the pedestrian load and the non-motor vehicle load are balanced by the balance plate and the upper filling load of the balancing plate, and the balance load area of the balance plate is determined according to the balance force generated by the required filling thickness and a certain amount of safety reserve is reserved. Compared with the parallel contour road structure form of the steep slope road and the steep slope section, the steep slope road has the advantages of obviously reducing the height of cutting side slope, reducing the downshifting scale and difficulty, reducing the bridge occupation ratio, and having obvious advantages in the aspects of earth and stone side, blocking and protecting masonry quantity and the levying scale; compared with the parallel unequal-height double-lower-baffle road structure, the road cutting and side slope height, the excavation amount and the support and baffle scale of the upper road are obviously reduced, the support and baffle measures of the lower road are omitted, the bridge occupation ratio is reduced, and the road cutting and baffle structure has obvious advantages in the aspects of earth and stone sides, the baffle and protection masonry amount and the levying scale; compared with the half-road and half-bridge road structure, the advantages are more obvious, the bridge occupation ratio is directly reduced, and the investment cost is obviously reduced.
In addition, according to an embodiment of the present invention, a first road 9 is constructed on the upper surface of the soil backfill zone 8.
In this embodiment, the first road 9 includes, from bottom to top: the concrete comprises a matrix layer, a gravel layer, a first concrete layer, a first glass fiber net cloth layer, a second concrete layer, a second glass fiber net cloth layer and an asphalt surface layer, wherein vertical reinforcing ribs are arranged between the asphalt surface layer and the first concrete layer, and the thickness of the asphalt surface layer is 2.4 times that of the second concrete layer;
the space between the reinforcing ribs is equal, the surface density of the first glass fiber net cloth layer is equal to that of the second glass fiber net cloth layer, the first glass fiber net cloth layer is formed by compounding glass fiber layers with the axial directions of 0 degrees and 90 degrees, and the second glass fiber net cloth layer is formed by compounding with the axial directions of 45 degrees and-45 degrees; the thickness of the first concrete layer is equal to that of the second concrete layer, the thickness of the matrix layer is 4 times that of the asphalt surface layer, the matrix layer is made of special cement materials, and the strength after curing is 3 times that of ordinary cement; the bottom of the matrix layer can also be provided with sharp uneven shapes, which is favorable for the tight combination of the matrix layer and the upper surface of the soil backfill area 8 positioned on the lower layer.
In order to ensure the construction safety of the pile body and the permanent safety of the cut side slope of the upper road, a steep slope above the road surface of the first road 9 is provided with a long anchor rod 6 for permanent reinforcement; the steep slope below the road surface of the first road 9 is provided with a short anchor 7 for temporary reinforcement.
In addition, according to an embodiment of the present invention, as shown in fig. 2, prefabricated panels 11 are laid on two adjacent cantilever beams 3 to construct a second road.
In this embodiment, the second road is laid by a plurality of pavement units of arranging and forms, and every pavement unit includes 4 prefabricated boards, and four prefabricated boards utilize the steel strand wires to constitute a pavement unit, and the both sides of prefabricated board all are provided with the pore that is used for placing the steel strand wires, connect through the steel strand wires between the adjacent prefabricated board. In order to better increase the strength, the four sides of the precast slabs are provided with pore canals for placing steel strands, and the adjacent precast slabs are connected through the steel strands, so that 3 to 4 steel strands of each precast slab are connected, and the overall stability of the pavement unit is enhanced;
prefabricated plates are prefabricated in a processing plant and transported to a construction site for positioning and assembling. The geometry of the prefabricated plate is determined according to the number of lanes required by design and the design grade. And (3) the concrete pavement with higher design grade is combined with the local engineering geology and water wave related data before being paved, and whether the roadbed meets the requirements of design files is checked and accepted according to related check standards and specifications.
The precast slab is made of reinforced concrete, the template can be a shaping steel template, and the reserved pore canal, the shear key pre-embedding and the accurate position and size of the manhole opening are required to be paid attention to during the manufacturing. The prefabricated plate is divided into a plurality of models so as to be convenient for standardized production of fixed-length. Dividing the prefabricated plate into a plurality of types according to the length ratio of the short side to the long side of the prefabricated plate, and dividing each type into a plurality of types according to the length of the short side of the prefabricated plate; and selecting matched products of different models to assemble according to the road design width.
The prefabricated plates between adjacent prefabricated plates are also provided with connecting key structures, and the connecting key structures comprise shearing-resistant convex keys and shearing-resistant concave keys which are matched with each other. The connecting key structure is provided with a plurality of connecting key structures which are uniformly arranged between two adjacent precast slabs; the two inner side ends of the precast slab are provided with shear convex keys, and one side of the precast slab corresponding to the shear convex keys is provided with shear concave keys. The shearing-resistant convex key and the shearing-resistant concave key are respectively pre-buried in the side surface of the precast slab and welded by using the anchoring rib, so that the precast slab is firm and convenient to install.
A rubber plate is arranged between the contact surfaces of the steel connecting plate and the precast slab. Preventing local damage to the outer surface of the pavement slab when stress is applied to the steel strand. The rubber blocks are arranged in gaps between adjacent precast slabs, holes for installing the connecting key structures and the steel strands are reserved in the rubber blocks, so that a soft connection is integrally formed, the extrusion resistance effect is good, and the expansion joint effect is achieved.
In addition, according to the embodiment of the present invention, the cantilever beam 3, the balance plate 4 and the slide resistance pile 2 are an integral connection structure.
In the embodiment, in order to ensure the stress effect between the cantilever beam and the balance plate, the stress ribs of the cantilever beam and the balance plate are required to penetrate through the anti-slide pile framework; in order to improve the stress effect of the cantilever beam, axillary 5 is additionally arranged at the upper folding angle of the anti-slide pile and the cantilever beam.
In addition, according to an embodiment of the present invention, a rail is provided at the upper end surface of the slide stud 2.
In the present embodiment, in order to improve the safety of the first road 9 and the second road, a rail is provided at the upper end surface of the slide-resistant pile 2 to prevent a person or a vehicle from falling from the first road 9 to the second road.
Fig. 3 is a schematic structural diagram of another steep slope road according to an embodiment of the invention, as shown in fig. 3, the steep slope road comprises: a plurality of anti-slide piles 2 are arranged on the abrupt slope 1, the anti-slide piles 2 are exposed out of the steep slope surface for one section, cantilever beams 3 and balance plates 4 which are arranged at equal heights are arranged at the upper end parts of the anti-slide piles 2, the cantilever beams 3 and the balance plates 4 are respectively positioned on two opposite side surfaces of the anti-slide piles 2, pier columns 12 which are vertically arranged are arranged below the cantilever beams 3, and the pier columns 12 are used for supporting the cantilever beams 3; a soil retaining plate 10 which is vertically arranged is arranged between the adjacent anti-slide piles, and a soil backfill area 8 is formed by the soil retaining plate 10 and the balance plate 4; and constructing parallel unequal-height bidirectional framing roads through the cantilever beam 3 and the soil backfill area 8.
In the embodiment, in order to reduce the filling and excavation, a parallel road cross section form with unequal height and amplitude is adopted, and a common anti-slide pile is arranged between an upper road and a lower road; in order to reduce the lower stop of a lower road and even the bridge structural form, the anti-slide piles between the separate roads are fully utilized, the balance plates and the cantilever beams connected with the anti-slide pile bodies are additionally arranged, precast slabs are paved on the cantilever beams, a pavement structural layer is applied on the precast slabs, the cantilever beams and the slab loads on the upper parts thereof, pedestrian loads and non-motor vehicle loads are balanced by pier columns, the balance plates and the soil filling loads on the upper parts of the balance plates, and the balance load areas of the balance plates are determined according to the balance force generated by the soil filling thickness required to be provided and a certain amount of safety reserve is reserved. Compared with the parallel contour road structure form of the steep slope road and the steep slope section, the steep slope road has the advantages of obviously reducing the height of cutting side slope, reducing the downshifting scale and difficulty, reducing the bridge occupation ratio, and having obvious advantages in the aspects of earth and stone side, blocking and protecting masonry quantity and the levying scale; compared with the parallel unequal-height double-lower-baffle road structure, the road cutting and side slope height, the excavation amount and the support and baffle scale of the upper road are obviously reduced, the support and baffle measures of the lower road are omitted, the bridge occupation ratio is reduced, and the road cutting and baffle structure has obvious advantages in the aspects of earth and stone sides, the baffle and protection masonry amount and the levying scale; compared with the half-road and half-bridge road structure, the advantages are more obvious, the bridge occupation ratio is directly reduced, and the investment cost is obviously reduced.
Fig. 4 is a schematic structural view of a steep slope road according to an embodiment of the invention, as shown in fig. 4, the steep slope road comprises: a plurality of anti-slide piles 2 are arranged on the abrupt slope 1, the anti-slide piles 2 are exposed out of the steep slope surface for one section, the upper end parts of the anti-slide piles 2 are provided with cantilever beams 3 and balance plates 4 which are arranged at equal heights, the cantilever beams 3 and the balance plates 4 are respectively positioned on two opposite side surfaces of the anti-slide piles 2, inclined bracing beams 13 are arranged below the cantilever beams 3, and the inclined bracing beams 13 are used for supporting the cantilever beams 3; a soil retaining plate 10 which is vertically arranged is arranged between the adjacent anti-slide piles, and a soil backfill area 8 is formed by the soil retaining plate 10 and the balance plate 4; and constructing parallel unequal-height bidirectional framing roads through the cantilever beam 3 and the soil backfill area 8.
In the embodiment, in order to reduce the filling and excavation, a parallel road cross section form with unequal height and amplitude is adopted, and a common anti-slide pile is arranged between an upper road and a lower road; in order to reduce the lower stop of a lower road and even the bridge structural form, the anti-slide piles between the separate roads are fully utilized, a balance plate and an overhanging beam connected with the anti-slide pile bodies are additionally arranged, precast slabs are paved on the overhanging beam, a pavement structural layer is applied on the precast slabs, the overhanging beam and the slab load, the pedestrian load and the non-motor vehicle load on the upper part of the overhanging beam are balanced by the inclined supporting beams, the balance plate and the soil filling load on the upper part of the balance plate, and the balance load area of the balance plate is determined according to the balance force generated by the soil filling thickness required to be provided and a certain amount of safety reserve is reserved. Compared with the parallel contour road structure form of the steep slope road and the steep slope section, the steep slope road has the advantages of obviously reducing the height of cutting side slope, reducing the downshifting scale and difficulty, reducing the bridge occupation ratio, and having obvious advantages in the aspects of earth and stone side, blocking and protecting masonry quantity and the levying scale; compared with the parallel unequal-height double-lower-baffle road structure, the road cutting and side slope height, the excavation amount and the support and baffle scale of the upper road are obviously reduced, the support and baffle measures of the lower road are omitted, the bridge occupation ratio is reduced, and the road cutting and baffle structure has obvious advantages in the aspects of earth and stone sides, the baffle and protection masonry amount and the levying scale; compared with the half-road and half-bridge road structure, the advantages are more obvious, the bridge occupation ratio is directly reduced, and the investment cost is obviously reduced.
The embodiment of the invention also provides a construction method of the steep slope road, which comprises the following steps: digging a plurality of pile holes on the steep slope, putting reinforcing steel bars which meet the specification in the pile holes, forming an anti-slide pile framework, exposing one section of the steep slope from the reinforcing steel bars, arranging cantilever beam reinforcing steel bars and balance plate reinforcing steel bars at the upper ends of the reinforcing steel bars, and arranging retaining plate reinforcing steel bars between adjacent reinforcing steel bars;
pouring concrete into the integrally connected anti-slide pile framework, the cantilever beam steel bars, the balance plate steel bars and the soil retaining plate steel bars to form reinforced concrete anti-slide piles, reinforced concrete cantilever beams, reinforced concrete balance plates and reinforced concrete soil retaining plates;
and forming a soil body backfill area through the reinforced concrete retaining plate and the reinforced concrete balance plate, filling soil into the soil body backfill area, and constructing a parallel unequal-height bidirectional framing road through the reinforced concrete cantilever beam and the soil body backfill area.
In this embodiment, before the pile hole of the anti-slide pile is excavated, the steep slope is firstly cut to form a slope cutting area, and the pile hole is excavated at the bottom end of the slope cutting area. Pile holes vertically penetrate into steep slopes, and the distance between adjacent pile holes is 2-5 times the diameter of the pile holes. The height of the reinforced concrete retaining plate can be set according to actual needs.
In this embodiment, the construction site of a general steep slope road is steep in slope angle, general heavy equipment is difficult to construct, a small manual construction platform is erected by manually entering the site, the construction of the slide-resistant pile 2 is performed first, the slide-resistant pile 2 is utilized to provide vertical bearing capacity, horizontal bearing capacity can be resisted, and the slide resistance and overall stability are provided. In order to reduce the filling and digging direction, a parallel road cross section form with unequal height and amplitude is adopted, and a common anti-slide pile is arranged between an upper road and a lower road; in order to reduce the lower stop of a lower road and even the bridge structural form, the anti-slide piles between the separate roads are fully utilized, a balance plate and an overhanging beam connected with the anti-slide pile bodies are additionally arranged, precast slabs are paved on the overhanging beam, a pavement structural layer is applied on the precast slabs, the overhanging beam and the slab load on the upper part of the overhanging beam, the pedestrian load and the non-motor vehicle load are balanced by the balance plate and the upper filling load of the balancing plate, and the balance load area of the balance plate is determined according to the balance force generated by the required filling thickness and a certain amount of safety reserve is reserved. Compared with the parallel contour road structure form of the steep slope road and the steep slope section, the steep slope road has the advantages of obviously reducing the height of cutting side slope, reducing the downshifting scale and difficulty, reducing the bridge occupation ratio, and having obvious advantages in the aspects of earth and stone side, blocking and protecting masonry quantity and the levying scale; compared with the parallel unequal-height double-lower-baffle road structure, the road cutting and side slope height, the excavation amount and the support and baffle scale of the upper road are obviously reduced, the support and baffle measures of the lower road are omitted, the bridge occupation ratio is reduced, and the road cutting and baffle structure has obvious advantages in the aspects of earth and stone sides, the baffle and protection masonry amount and the levying scale; compared with the half-road and half-bridge road structure, the advantages are more obvious, the bridge occupation ratio is directly reduced, and the investment cost is obviously reduced.
In addition, according to the embodiment of the invention, concrete is poured on the integrally connected anti-slide pile framework, cantilever beam steel bars, balance plate steel bars and retaining plate steel bars in a pumping mode for improving the construction efficiency.
In addition, according to the embodiment of the invention, the construction of the parallel unequal-height bidirectional framing road through the reinforced concrete cantilever beam and the soil backfill area is specifically as follows: and constructing a first road on the upper surface of the soil backfill area, and paving prefabricated plates on two adjacent reinforced concrete cantilever beams to construct a second road.
In order to ensure the construction safety of the pile body and the permanent safety of the cut side slope of the upper road, a long anchor rod for permanent reinforcement is arranged on the steep slope above the first road surface; the steep slope below the first road surface is provided with a short anchor for temporary reinforcement.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. A steep grade road, comprising: a plurality of anti-slide piles are arranged on the steep slope, the anti-slide piles are exposed out of the steep slope surface for one section, cantilever beams and balance plates which are arranged at equal heights are arranged at the upper end parts of the anti-slide piles, and the cantilever beams and the balance plates are respectively positioned on two opposite side surfaces of the anti-slide piles; a soil retaining plate which is vertically arranged is arranged between the adjacent anti-slide piles, and a soil backfill area is formed by the soil retaining plate and the balance plate; constructing parallel unequal-height bidirectional framing roads through the cantilever beams and the soil backfill area;
constructing a first road on the upper surface of the soil backfill area; paving precast slabs on two adjacent cantilever beams to construct a second road;
the first road comprises from bottom to top: the concrete comprises a matrix layer, a gravel layer, a first concrete layer, a first glass fiber net cloth layer, a second concrete layer, a second glass fiber net cloth layer and an asphalt surface layer, wherein vertical reinforcing ribs are arranged between the asphalt surface layer and the first concrete layer, and the thickness of the asphalt surface layer is 2.4 times that of the second concrete layer; the space between the reinforcing ribs is equal, the surface density of the first glass fiber net cloth layer is equal to that of the second glass fiber net cloth layer, the first glass fiber net cloth layer is formed by compounding glass fiber layers with the axial directions of 0 degrees and 90 degrees, and the second glass fiber net cloth layer is formed by compounding with the axial directions of 45 degrees and-45 degrees; the thickness of the first concrete layer is equal to that of the second concrete layer, the thickness of the matrix layer is 4 times that of the asphalt surface layer, the matrix layer is made of special cement materials, and the strength after curing is 3 times that of ordinary cement; the bottom of the matrix layer can also be provided with a sharp uneven shape, which is favorable for the tight combination of the matrix layer and the upper surface of the soil backfill area positioned on the lower layer;
the second road is formed by paving a plurality of pavement units which are arranged, each pavement unit comprises four precast slabs, the four precast slabs form a pavement unit by utilizing steel strands, the two sides of each precast slab are provided with pore canals for placing the steel strands, and the adjacent precast slabs are connected by the steel strands; in order to better increase the strength, the four sides of the precast slabs are provided with pore canals for placing steel strands, and the adjacent precast slabs are connected through the steel strands, so that 3 to 4 steel strands of each precast slab are connected, and the overall stability of the pavement unit is enhanced; the prefabricated slab is made of reinforced concrete, the shaping steel template can be adopted, and the reserved pore channels, the pre-buried shear keys and the accurate positions and sizes of the manhole openings are required to be paid attention to during the manufacturing;
the prefabricated plates between adjacent prefabricated plates are also provided with connecting key structures, and the connecting key structures comprise shearing-resistant convex keys and shearing-resistant concave keys which are matched with each other; the connecting key structure is provided with a plurality of connecting key structures which are uniformly arranged between two adjacent precast slabs; the two inner side ends of the precast slab are respectively provided with a shearing-resistant convex key, and one side of the precast slab corresponding to the shearing-resistant convex keys is provided with a shearing-resistant concave key; the shearing-resistant convex key and the shearing-resistant concave key are respectively pre-buried in the side surface of the precast slab and welded by using the anchoring rib, so that the precast slab is firm and convenient to install;
a rubber plate is arranged between the contact surfaces of the steel connecting plate and the precast slab; preventing the outer surface of the pavement slab from being locally damaged when stress is applied to the steel strand; the rubber blocks are arranged in gaps between adjacent precast slabs, holes for installing the connecting key structures and the steel strands are reserved in the rubber blocks, so that a soft connection is integrally formed, the extrusion resistance effect is good, and the expansion joint effect is achieved.
2. Steep road according to claim 1, characterized in that the steep slope above the first road surface is provided with a long anchor for permanent reinforcement; the steep slope below the first road surface is provided with a short anchor rod for temporary reinforcement.
3. The steep slope road according to claim 1, wherein a vertically placed pier is provided below the cantilever beam, the pier being for supporting the cantilever beam.
4. The steep incline road according to claim 1, wherein an inclined strut is provided below the cantilever beam, the inclined strut being for supporting the cantilever beam.
5. A construction method of a steep slope road according to any of claims 1 to 4, comprising:
digging a plurality of pile holes on a steep slope, wherein the pile holes penetrate into the steep slope, placing steel bars which meet the specification and the size in the pile holes to form an anti-slide pile framework, exposing one section of the steep slope by the steel bars, arranging cantilever beam steel bars and balance plate steel bars at the upper end parts of the steel bars, and arranging retaining plate steel bars between adjacent steel bars;
pouring concrete into the anti-slide pile framework, the cantilever beam steel bars, the balance plate steel bars and the soil retaining plate steel bars which are integrally connected to form a reinforced concrete anti-slide pile, a reinforced concrete cantilever beam, a reinforced concrete balance plate and a reinforced concrete soil retaining plate;
forming a soil backfill area through the reinforced concrete retaining plate and the reinforced concrete balance plate, filling soil into the soil backfill area, and constructing a parallel unequal-height bidirectional framing road through the reinforced concrete cantilever beam and the soil backfill area;
the construction of the parallel unequal-height bidirectional framing road through the reinforced concrete cantilever beam and the soil backfill area is specifically as follows: and constructing a first road on the upper surface of the soil backfill area, and paving precast slabs on two adjacent reinforced concrete cantilever beams to construct a second road.
6. The construction method according to claim 5, wherein concrete is poured into the integrally connected anti-slide pile skeleton, the cantilever beam reinforcing bars, the balance plate reinforcing bars and the soil guard plate reinforcing bars by pumping.
7. The construction method according to claim 5, wherein the steep slope is cut to form a cut-slope region before the pile hole is cut, and the pile hole is cut at the bottom end of the cut-slope region.
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| CN109750681B (en) * | 2019-03-14 | 2024-07-12 | 兰州理工大学 | Filling side slope frame micro-tensioning support anchor plate supporting structure and construction method thereof |
| CN110195388A (en) * | 2019-06-25 | 2019-09-03 | 四川省公路规划勘察设计研究院有限公司 | Overhang widened structure Bang Shan highway and its construction method |
| CN110409241B (en) * | 2019-08-13 | 2021-08-24 | 中电建十一局工程有限公司 | Method for applying steel bar lattice column to roadbed rapid construction |
| CN111218873A (en) * | 2020-03-04 | 2020-06-02 | 中铁二院工程集团有限责任公司 | Steep slope supporting stress type roadbed structure and construction method |
| CN112095377B (en) * | 2020-08-28 | 2022-07-12 | 中国建筑第八工程局有限公司 | Off-pit construction road structure next to subway deep foundation pit and construction method thereof |
| CN113897829A (en) * | 2021-07-29 | 2022-01-07 | 北京工业大学 | Mountain-separating roadbed structure with partially overlapped upper plane |
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