A method for constructing a ramp pavement

Abstract

The application relates to a slope pavement construction method, which comprises the following steps: firstly, treating a base and forming a base groove; then, arranging a plurality of anchor pits distributed at the four corners of the rectangle on the base groove; embedding a seat in the anchor pit; arranging a hanging column on the upper part of the embedded seat; arranging a hanging ring around the hanging column; connecting a hanging chain with the hanging ring; and connecting the hanging column through the hanging chain structure. When filling natural gravel, the structure can be arranged inside the natural gravel, and the embedded seat can be used for rooting, so that a frame-shaped built-in reinforcing structure is formed in the base cushion layer, and the connecting strength of the base cushion layer and the base groove is ensured. A cap is arranged on the upper part of the hanging column, the threaded hole on the upper part of the hanging column can be plugged by using the cap, the cap can be pulled out when necessary, then a cushion seat is fixed in the threaded hole, rooting is performed by using the hanging column, a reinforcing structure is formed in the graded aggregate base layer by using the steel mesh frame based on the cushion seat, the connecting strength between the graded aggregate base layer and the base cushion layer is ensured, and the layer is prevented from slipping.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of construction engineering, in particular to a slope pavement construction method. BACKGROUND

[0002] In infrastructure projects, road engineering is an important part of it, and slope pavement construction refers to the work of laying pavement materials in the slope area of roads or buildings.

[0003] In the existing construction method, the pavement base is generally first treated: that is, the base of the slope pavement is first treated, including cleaning, repairing and reinforcing and other work. Cleaning the base is to remove debris and poor soil, repairing is to fill cracks and potholes, and reinforcing is to improve the bearing capacity and stability of the base. Pavement material laying: select suitable pavement materials and lay them according to design requirements. Common pavement materials include asphalt, concrete and sandstone, etc. When laying, attention should be paid to the uniformity of the materials and the control of the thickness to ensure the flatness and firmness of the slope pavement. Pavement leveling and compaction: after the slope pavement is laid, leveling and compaction work is needed. Use vibrating plates, road rollers and other equipment to level and compact the pavement materials to improve the density and flatness of the pavement. Pavement maintenance: after the slope pavement construction is completed, maintenance work is needed, including spraying maintenance agents, covering protective layers, etc. The purpose of maintenance work is to protect the quality of pavement materials and prolong the service life.

[0004] The existing method has the following problems in slope pavement construction: the base is directly covered with a sub-base, especially for slope structures, which is prone to landslides, and the contact between layers of materials is not firm; cracks are prone to occur, and the roadbed stability is poor. Therefore, it is necessary to research a slope pavement construction method. SUMMARY

[0005] In view of this, the purpose of the present application is to provide a slope pavement construction method that effectively solves the problem of poor contact between layers of materials in the existing slope section construction method; cracks are prone to occur, and the roadbed stability is poor.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is: a slope pavement construction method, comprising the following steps:

[0007] Step 1: Clean the base

[0008] Remove the vegetation on the surface of the base to expose the base layer.

[0009] Step 2: Measure and layout

[0010] Accurate line, edge line and anchor pit position on the roadbed, while determining the base elevation and excavation depth; according to the position of the center line and the edge line, excavate from the middle of the base to both sides to form a base trench, and clean, fill and compact the bottom of the trench;

[0011] Step three, excavate the anchor pit

[0012] According to the layout position, excavate the anchor pit on the bottom of the base trench, then place the pre-buried seat in the anchor pit and fix it with filling mortar, ensure that the upper edge of the anchor pit is flush with the mark point of the pre-buried seat, the upper part of the pre-buried seat is provided with a hanging column, the hanging column is uniformly provided with a hanging ring around, and the upper part of the hanging column is provided with a cap plug;

[0013] Step four, arrange the hanging chain

[0014] The hanging chain includes hooks, connecting chains and reinforcing plate frames; the connecting beams and the reinforcing plate frames are alternately connected and form a main structure, the hooks are arranged at both ends of the main structure, the hooks on both sides of the hanging chain are hooked on the hanging rings, the adjacent hanging columns are connected, the hanging chain is connected with the hanging column, and multiple rectangular partitions are formed by surrounding the hanging chains; there is a passageway between adjacent rectangular partitions;

[0015] Step five, fill the base cushion

[0016] The transport vehicle walks in the passageway to unload, spreads natural gravel on the base trench, and ensures that the natural gravel covers the hanging column; then perform rolling construction; ensure that the base cushion is flat and compact;

[0017] Step six, apply the pad seat

[0018] According to the position of the anchor pit, the position of the hanging column is determined, the cap plug on the upper part of the hanging column is pulled out, then the pad seat is screwed and fixed on the upper part of the hanging column, and the support point is established relying on the hanging column; the baffle is arranged on the pad seat;

[0019] Step seven, construct the steel mesh frame

[0020] A plurality of mounting sleeves are fixed on the steel mesh frame, the mounting sleeves correspond to the pad seats and can be seated on the baffles, thereby establishing a mesh structure; the mesh structures have passageways therebetween;

[0021] Step eight, fill the graded aggregate

[0022] Fill the graded aggregate on the base cushion and ensure that it covers the mesh structure, then perform rolling and compaction;

[0023] Step nine, construct the asphalt bonding layer and the asphalt wear-resistant layer

[0024] Finally, the asphalt bonding layer and the asphalt wear-resistant layer are constructed on the graded aggregate base layer from bottom to top in sequence.

[0025] Further, the identification poles are arranged on both sides of the construction road, the hanging lines are arranged between the identification poles, and identification blocks are arranged on the hanging lines.

[0026] Further, a primer layer is uniformly applied on the upper surface of the graded aggregate base, and then an asphalt bonding layer is applied on the primer layer.

[0027] Further, the anchor pit is in a conical structure with a large upper part and a small lower part, and the bottom of the pre-buried seat is fixed to the bottom of the anchor pit through the anchor nail.

[0028] Further, the rectangular partition includes a middle partition and side partitions, the side partitions are distributed on both sides of the middle partition, and the passageways are located on both sides of the middle partition.

[0029] Further, the connecting beam is a multi-section chain, and the reinforcing plate frame is in a square frame structure and is in an inwardly inclined structure in the assembled state.

[0030] Further, a flexible identification strip is arranged on the upper part of the cap plug, a threaded hole is arranged at the center of the upper part of the hanging column, and a mounting head is arranged at the bottom of the pad seat and is threadedly connected in the threaded hole.

[0031] Further, an internally-threaded mounting hole is arranged on the upper part of the pad seat, a mounting sleeve is sleeved on the upper part of the pad seat and is provided with a center hole corresponding to the mounting hole, and then the mounting sleeve is fastened through the fixing bolt.

[0032] Further, the thickness of the base cushion layer is 260-280 mm, the thickness of the graded aggregate base is 200-220 mm, the thickness of the asphalt bonding layer is 50-60 mm, and the thickness of the asphalt wear-resistant layer is 50-60 mm.

[0033] Further, the bottom of the base groove and the upper part of the base cushion layer are provided with anti-skid anchor rods.

[0034] The beneficial effects of the above technical solution are that: the base is first treated and a base groove is formed, a plurality of anchor pits distributed on the four corners of the rectangle are arranged on the base groove, a pre-buried seat is arranged in the anchor pit, a hanging column is arranged on the upper part of the pre-buried seat, a hanging ring is arranged around the hanging column, a hanging chain is connected to the hanging ring, the hanging chain structure connects the hanging columns and forms a square area, when natural gravel is filled, the structure can be arranged inside the natural gravel, and the pre-buried seat can be used for rooting, so that a frame-shaped built-in reinforcing structure can be formed in the base cushion layer, the connection strength of the base cushion layer and the base groove is ensured, and base slippage is avoided.

[0035] Meanwhile, the cap plug is arranged at the upper portion of the hanging column, the cap plug can plug the threaded hole at the upper portion of the hanging column, the cap plug is pulled out when necessary, and then the pad base is fixed in the threaded hole, so that the hanging column is used for rooting, the steel mesh frame is arranged on the pad base, the steel mesh frame is used for forming the reinforcing structure in the graded aggregate base layer, so that the connecting strength between the graded aggregate base layer and the base pad layer is ensured, and the sliding of the layer is avoided.

[0036] In the structure, the thickness of the base pad layer is 260-280mm, the thickness of the graded aggregate base layer is 200-220mm, the thickness of the asphalt bonding layer is 50-60mm, and the thickness of the asphalt wear-resistant layer is 50-60mm; the inner reinforcing structure is applied to the two-layer base, the connecting strength between the layers is greatly improved, the structural sliding is avoided, the connection degree of the pad layer is improved, and the stability of the roadbed is improved.

[0037] Therefore, the pre-embedded seat is arranged in the foundation groove, the hanging column is arranged on the pre-embedded seat, the first inner reinforcing structure is applied by the hanging column, the inner reinforcing frame is provided for the base pad layer, the pad base is arranged based on the hanging column, the second inner reinforcing structure is applied based on the pad base, and the inner reinforcing structure is provided for the graded aggregate base layer, the connecting strength between the two-layer structure and the base is good, the connection degree between the layers is ensured, the sliding between the layers is avoided, and a relatively stable base structure is provided for the slope road surface. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a construction structure schematic view of the base pad layer of the present application;

[0039] Figure 2 It is a construction structure schematic view of the graded aggregate base layer of the present application;

[0040] Figure 3 It is a construction structure schematic view of the asphalt bonding layer and the asphalt wear-resistant layer of the present application;

[0041] Figure 4 It is a construction structure schematic view of the hanging column and the connecting chain;

[0042] Figure 5 It is a structure schematic view of the passageway;

[0043] Figure 6 It is a construction structure schematic view of the steel mesh frame.

[0044] The reference signs: 1 is an anchoring pit, 2 is a pre-buried seat, 3 is a filling mortar, 4 is a hanging column, 5 is a hanging ring, 6 is a hook, 7 is a connecting chain, 8 is a reinforcing plate frame, 9 is a cap plug, 10 is a marking strip, 11 is an anti-skid anchor rod, 12 is a base cushion layer, 13 is a cushion seat, 14 is a baffle, 15 is a mounting sleeve, 16 is a steel mesh frame, 17 is a graded aggregate base layer, 18 is an asphalt bonding layer, 19 is an asphalt wear-resistant layer, 20 is a threaded hole, 21 is a side partition, 22 is a passageway, and 23 is a middle partition. DETAILED DESCRIPTION

[0045] The application will be further described in detail below in combination with the drawings and specific embodiments:

[0046] Embodiment 1 aims to provide a slope pavement construction method, mainly aiming at the construction of the slope pavement, aiming at the inclined pavement construction, the construction mode of the slope road section, the contact firmness between the layers of materials is poor; the roadbed is prone to slip, which causes cracks in the pavement, and the stability of the roadbed is poor, and the embodiment provides a reinforced slope pavement construction method.

[0047] In the specific construction, as shown in Figures 1-3 , a slope pavement construction method includes the following steps:

[0048] Step 1, cleaning the base

[0049] The vegetation on the surface of the base is removed to expose the base layer; tree roots, turf, garbage, planting soil, and original soil are removed, and temporary drainage facilities are prepared, and waste soil is removed to the waste soil field and other sites. The appearance of the original ground after treatment meets the following requirements: the base is free of turf, tree roots and other debris, and there is no water accumulation; the original ground base is dense, meeting the embankment base compaction standard and flatness.

[0050] Step 2, measurement and lofting

[0051] The center line, edge line and anchoring pit position on the roadbed are accurately laid out, and the base elevation and excavation depth are determined; according to the positions of the center line and the edge line, the excavation construction is carried out from the middle of the base to both sides to form a base trench, and the trench bottom is cleaned, filled and compacted; the embodiment adopts mechanical flow operation of digging, loading, transporting, spreading, leveling and compacting to ensure the completion of high-quality and high-speed roadbed filling.

[0052] Step 3, excavating the anchoring pit

[0053] According to the lofting position, the anchoring pit 1 is spaced apart on the bottom of the foundation trench, then the embedded seat 2 is placed in the anchoring pit 1, and is fixed by filling the mortar 3, and it is ensured that the upper edge of the anchoring pit 1 is flush with the mark point of the embedded seat 2, the embedded seat 2 is provided with a hanging column 4, the hanging column 4 is provided with a hanging ring 5 around, and the upper part of the hanging column 4 is provided with a cap plug 9; the anchoring pit 1 is in a tapered structure with a large upper part and a small lower part, and the bottom of the embedded seat 2 is fixed on the bottom of the anchoring pit 1 by anchoring nails. In construction, the anchoring pit 1 structure is used to embed the embedded seat 2 into the foundation, and to generate rooting, and the hanging column 4 is arranged on the basis of the structure, and an internal reinforcing foundation is provided for the foundation cushion.

[0054] Step four, arranging the hanging chain

[0055] As Figure 4 shown in the figure, the hanging chain includes hooks 6, connecting chains 7 and reinforcing plate frames 8; the connecting chains 7 and the reinforcing plate frames 8 are alternately connected and form a main structure, the hooks 6 are arranged at both ends of the main structure, the hooks on both sides of the hanging chain are hooked on the hanging rings 5, the adjacent hanging columns 4 are connected, the hanging chain is connected with the hanging columns 4, and multiple rectangular partitions are enclosed between the hanging chains; there is a passageway 22 between adjacent rectangular partitions; as Figure 6 shown in the figure, the rectangular partition includes a middle partition 23 and side partitions 21, the side partitions 21 are distributed on both sides of the middle partition 23, the passageway 22 is on both sides of the middle partition, and the passageway is linearly distributed and between the partitions, facilitating vehicle driving.

[0056] In a further structure, the connecting chain 7 is in a straightened state in a stretched state, the connecting chain 7 is a plurality of chain links, the reinforcing plate frame 8 is a square frame structure, and in an assembled state, the reinforcing plate frame 8 is in an inwardly inclined structure; this structure can ensure the connecting area between the reinforcing plate frame 8 and the foundation cushion 12 under the premise of meeting the built-in, and can have a larger contact area with the reinforcing plate frame 8 when the foundation cushion 12 slips, and has a better resistance effect.

[0057] Step five, filling the foundation cushion 12

[0058] The transport vehicle travels in the passageway 22 to unload, spreads the natural gravel on the foundation trench, and ensures that the natural gravel covers the hanging column 4; then, the rolling construction is carried out; the foundation cushion 12 is ensured to be flat and dense; during spreading, manual rough spreading and leveling are carried out first, and then mechanical construction is carried out.

[0059] Step six, applying the cushion seat

[0060] According to the position of the anchor, the position of the hanging column 4 is determined, the cap plug 9 on the upper part of the hanging column 4 is pulled out, and then the pad 13 is screwed and fixed on the upper part of the hanging column 4, and the support point is established relying on the hanging column 4; The baffle is arranged on the pad 13; In order to facilitate the determination of the position of the hanging column 4, a flexible identification strip is arranged on the upper part of the cap plug 9; The upper center of the hanging column 4 is provided with a threaded hole, and the bottom of the pad 13 is provided with a mounting head which is screwed in the threaded hole; In the implementation, the identification strip 10 protrudes outward, so as to facilitate searching, and at the same time, identification rods are arranged on both sides of the construction road in this embodiment, hanging lines are arranged between the identification rods, and identification blocks are arranged on the hanging lines; The identification blocks are used to identify the vertical position of the anchor pit, and the horizontal position is determined according to the design drawing, so that the position of the hanging column 4 is more convenient to determine.

[0061] Step seven, construction of steel bar net rack

[0062] A plurality of mounting sleeves 15 are fixed on the steel bar net rack 16, the mounting sleeves 15 correspond to the pads 13 and can be seated on the baffles 14, so as to establish a net rack structure; The net rack structures have a passageway; In order to facilitate assembly and improve assembly strength, the upper part of the pad 13 is provided with an internally threaded mounting hole in this embodiment, the mounting sleeve 15 is sleeved on the upper part of the pad 13 and is provided with a center hole corresponding to the mounting hole, and then the mounting sleeve 15 is fastened through the fixing bolt.

[0063] Step eight, filling of graded aggregate

[0064] The graded aggregate is filled and covered on the base cushion layer 12, and it is ensured that the net rack structure is covered, and then it is compacted by rolling; Before the test section of the graded aggregate base is paved, the standard test should be completed to determine the design theoretical mixing proportion, the optimum water content and the maximum dry density of the graded aggregate, and through the test section paving, the construction parameters of the graded aggregate are determined.

[0065] In this embodiment, the hanging column is used to apply the first internal reinforcing structure, which provides an internal reinforcing frame for the base cushion layer, and the pads are arranged based on the hanging column, the second internal reinforcing structure is applied based on the pads, and the internal reinforcing structure is provided for the graded aggregate base, so that the two-layer structure can establish good connection strength with the base, ensure the connection degree between the layers, avoid slipping between the layers, and provide a relatively stable base structure for the slope road surface.

[0066] Step nine, construction of asphalt bonding layer and asphalt wear-resistant layer

[0067] Finally, the asphalt adhesive layer 18 and the asphalt wear layer are sequentially constructed on the graded aggregate base layer 17 from bottom to top; in further implementation, the penetration layer oil is uniformly constructed on the upper surface of the graded aggregate base layer 17, and then the asphalt adhesive layer 18 is constructed on the penetration layer oil; before spraying the adhesive asphalt, the surface of the asphalt layer should be cleaned, the floating dust should be blown clean by the air compressor, and the surface layer should be washed by water, and the water must be evaporated clean and dried.

[0068] The embankment is filled by the horizontal layering method, the compaction thickness is determined according to the compaction equipment and technical specifications, the compaction thickness of each layer is controlled, the thickness of the base cushion layer is 260-280 mm, the thickness of the graded aggregate base layer is 200-220 mm, the thickness of the asphalt adhesive layer is 50-60 mm, and the thickness of the asphalt wear layer is 50-60 mm; the internal reinforcing structure applied to the two-layer thick foundation can greatly improve the connecting strength between the layers, avoid structural slippage, improve the connection degree of the cushion layer, and improve the stability of the roadbed.

[0069] The bottom of the base groove and the upper part of the base cushion layer 12 are provided with anti-skid anchor rods 11, the anti-skid anchor rods 11 can trigger the reinforcement of the connection between the layers from multiple single points, cooperate with the continuous reinforcing structure, and jointly ensure the connection effect between the layers to avoid hierarchical slippage.

[0070] The concept of the present application is to first process the base and form a base groove, a plurality of anchor holes distributed at the four corners of the rectangle are formed in the base groove, a pre-buried seat is arranged in the anchor hole, a hanging column 4 is arranged on the upper part of the pre-buried seat, a hanging ring 5 is arranged around the hanging column 4, a hanging chain is connected to the hanging ring 5, the hanging chain structure connects the hanging columns 4 and forms a square area, when the natural gravel is filled, the structure can be arranged inside the natural gravel, and meanwhile, the pre-buried seat is rooted, a frame-shaped built-in reinforcing structure is formed in the base cushion layer 12, the connecting strength between the base cushion layer 12 and the base groove is ensured, and base slippage is avoided.

[0071] Meanwhile, a cap plug 9 is arranged on the upper part of the hanging column 4, the cap plug 9 can plug the threaded hole on the upper part of the hanging column 4, and when necessary, the cap plug 9 is pulled out, and then the pad seat 13 is fixed in the threaded hole, so as to root by means of the hanging column 4, and the steel mesh frame 16 is arranged on the basis of the pad seat 13, the steel mesh frame 16 forms a reinforcing structure in the graded aggregate base layer 17, so as to ensure the connecting strength between the graded aggregate base layer 17 and the base cushion layer 12, and avoid slippage of the layer.

Claims

1. A method of constructing a sloped pavement, characterized by: It comprises the following steps: Step 1, clean the base Remove the vegetation on the surface of the base to expose the base layer; Step 2, measure and layout Accurately mark the center line, edge line and anchor pit position on the roadbed, and determine the base elevation and excavation depth; according to the position of the center line and the edge line, excavate from the middle of the base to both sides to form a base trench, and clean, fill and compact the trench bottom; Step 3, excavate the anchor pit Excavate the anchor pit at the bottom of the base trench according to the layout position, then place the pre-embedded seat in the anchor pit and fix it with filling mortar, ensure that the upper edge of the anchor pit is flush with the mark point of the pre-embedded seat, the upper part of the pre-embedded seat is provided with a hanging column, the hanging column is provided with a hanging ring around, and the upper part of the hanging column is provided with a cap plug; Step 4, arrange the hanging chain The hanging chain comprises hooks, connecting chains and reinforcing plate frames; the connecting chains and reinforcing plate frames are connected alternately to form a main structure, the hooks are arranged at both ends of the main structure, the hooks on both sides of the hanging chain are hooked on the hanging rings, the adjacent hanging columns are connected, the hanging chain is connected with the hanging column, and multiple rectangular partitions are formed by surrounding the hanging chains; there is a passageway between adjacent rectangular partitions; Step 5, fill the base cushion The transport vehicle walks in the passageway to unload, spreads natural gravel on the base trench, and ensures that the natural gravel covers the hanging column; then it is rolled and compacted; ensure that the base cushion is flat and dense; Step 6, apply the cushion seat According to the position of the anchor pit, the position of the hanging column is determined, the cap plug at the upper part of the hanging column is pulled out, then the cushion seat is screwed and fixed at the upper part of the hanging column, and the support point is established relying on the hanging column; a baffle is arranged on the cushion seat; Step 7, construct the steel reinforcement net rack A plurality of mounting sleeves are fixed on the steel reinforcement net rack, the mounting sleeves correspond to the cushion seats and can be seated on the baffles to establish a net rack structure; there is a passageway between the net rack structures; Step 8, fill the graded aggregate Fill the graded aggregate on the base cushion and ensure that it covers the net rack structure, then roll and compact it; Step 9, construct the asphalt bonding layer and the asphalt wear-resistant layer Finally, construct the asphalt bonding layer and the asphalt wear-resistant layer on the graded aggregate base layer from bottom to top in sequence.

2. The ramp pavement construction method according to claim 1, characterized by: Marking poles are arranged on both sides of the construction road, hanging lines are arranged between the marking poles, and marking blocks are arranged on the hanging lines; the marking blocks are used to mark the position of the anchor pit.

3. The ramp pavement construction method according to claim 1, characterized by: Uniformly apply a primer on the upper surface of the graded aggregate base layer, then apply an asphalt bonding layer on the primer.

4. The ramp pavement construction method according to claim 1, characterized by: The anchor pit is in a tapered structure with a large upper part and a small lower part, and the bottom of the pre-embedded seat is fixed to the bottom of the anchor pit by anchor nails.

5. The method of claim 1, wherein: The rectangular partition comprises a middle partition and side partitions, the side partitions are distributed on both sides of the middle partition, and the passageway is on both sides of the middle partition.

6. The method of claim 1, wherein: The connecting chain is a multi-link chain, and the reinforcing plate frame is a square frame structure; in the assembled state, the reinforcing plate frame is in an inwardly inclined structure.

7. The method of claim 1, wherein: The upper part of the cap plug is provided with a flexible identification strip; the upper center of the hanging column is provided with a threaded hole, and the bottom of the cushion seat is provided with a mounting head which is threadedly connected in the threaded hole.

8. The method of constructing a ramp pavement according to claim 1, wherein: The upper part of the cushion seat is provided with an internally threaded mounting hole, the mounting sleeve is sleeved on the upper part of the cushion seat and is provided with a center hole corresponding to the mounting hole, and then the mounting sleeve is fastened by a fixing bolt.

9. The method of claim 1-8, wherein: The thickness of the base cushion layer is 260-280mm, the thickness of the graded aggregate base layer is 200-220mm; the thickness of the asphalt binding layer is 50-60mm, and the thickness of the asphalt wear layer is 50-60mm.

10. The ramp pavement construction method according to claim 9, characterized by: The bottom of the base groove and the upper part of the base cushion layer are provided with anti-skid anchor rods.

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