Complex steep terrain foam concrete broadened light embankment and construction method

Abstract

The invention relates to a complex steep terrain foam concrete broadened light embankment and a construction method, the foam concrete construction broadened embankment is adopted, and the dead weight of the embankment is reduced, so that the settlement amount of a new roadbed is reduced, the differential settlement between the new roadbed and the old roadbed is reduced, and the later maintenance cost is reduced; before foam concrete construction, the protective canopy is arranged at the top of the concrete retaining wall, the protective canopy covers the position above the pouring position of the widened embankment, it is guaranteed that the foam concrete construction is not affected by weather, and then the construction progress is accelerated; the new roadbed and the old roadbed are anchored through various anchoring assemblies, and the integrity between the original roadbed and the broadened roadbed is improved.

Description

Technical Field

[0001] The invention belongs to the field of existing roadbed widening construction, and in particular relates to a foam concrete widening lightweight embankment on complex steep terrain and a construction method. Background Art

[0002] With the acceleration of urbanization and the continuous increase in traffic volume, the capacity of the original roads is gradually unable to meet the needs of modern transportation. In order to improve the capacity and safety of roads, it is necessary to widen and renovate the roads. As a new type of embankment structure, lightweight embankments have become an important choice in road widening and reconstruction due to their light weight and low requirements on foundation bearing capacity.

[0003] In road widening projects, the differential settlement between the new roadbed and the old roadbed is a key issue that needs to be addressed. Due to differences in material, compaction, foundation conditions and other factors between the new and old roadbeds, the settlement of the new roadbed under its own weight and vehicle load is much greater than that of the old roadbed, resulting in differential settlement. This differential settlement will be reflected on the road surface, increasing the slope change rate of the road cross section, and in severe cases, even causing problems such as longitudinal cracking of the road surface and instability of the roadbed. In order to meet this challenge, lightweight embankment technology came into being. By using lightweight foam concrete to reduce the deadweight of the embankment, the settlement of the new roadbed can be reduced, and the differential settlement between the new and old roadbeds can be reduced.

[0004] Based on the complex construction conditions and high construction quality requirements of the project, an innovative foam concrete widening lightweight embankment and construction method for complex and steep terrain with high construction efficiency, excellent construction quality and low safety risk is of great significance for improving the construction quality of roadbed widening. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a foam concrete widening lightweight embankment on complex steep terrain and a construction method.

[0006] This construction method of widening lightweight embankment with foamed concrete on complex steep terrain includes the following steps: Step 1: Install the base placement plate on the side of the concrete retaining wall corresponding to the position of the prefabricated baffle base; Step 2: Install the prefabricated baffle base, hoist the prefabricated baffle, and anchor it to the concrete retaining wall; Step 3: Set up a canopy base on the top surface of the concrete retaining wall, and then install a protective canopy, which is connected to the original road surface through a long tie rod; Step 4: Pour foam concrete between the concrete retaining wall and the prefabricated retaining plate in layers. After each layer is poured, construct a concrete surface layer on the platform. Step 5. Construct a leveling layer on the outside of the prefabricated baffle on the bottom layer, then install a flower bed on the leveling layer and the concrete surface layer, set up a water collection tank, and then plant plants in the flower bed.

[0007] Preferably, in step one, first make the steel bar anchoring assembly and the anchoring assembly, then construct a rear groove on the platform of the concrete retaining wall, then install the steel bar anchor rod assembly on the concrete retaining wall, install the anchoring assembly in the rear groove, and install the base placement plate at the position where the prefabricated baffle base needs to be installed.

[0008] Preferably, anchor holes are arranged on the concrete retaining wall, anchor hole protection is arranged outside the anchor holes, anchor rods are arranged in the anchor holes, steel bar anchors are arranged on the concrete retaining wall, the steel bar anchors include rear L-shaped anchor bars, angle steels and front anchor bars, anchor rings are arranged on the prefabricated baffle plates, prefabricated baffle plate bases are arranged at the bottom of the prefabricated baffle plates, a base placement plate is arranged at the bottom of the prefabricated baffle plate base, the base placement plate is anchored to the concrete retaining wall with steel bars, a rear cut groove is arranged on the platform of the concrete retaining wall, a reinforced bottom plate is arranged in the groove, and an anchor assembly is arranged on the reinforced bottom plate, and the anchor assembly consists of anchoring L-shaped steel bars and shear-resistant steel.

[0009] Preferably, in step 4, the foam concrete is poured in layers, a concrete surface layer is arranged on the top of each layer, and rib columns are arranged between the prefabricated baffles; in step 5, an upper flower bed is arranged on the concrete surface layer outside the prefabricated baffles, a middle flower bed is arranged outside the rib columns, a sump is arranged on the concrete surface layer of the top layer, a leveling layer is arranged under the prefabricated baffles at the foot of the widened embankment, and a lower flower bed is arranged on the top surface of the leveling layer.

[0010] Preferably, a water collecting tank is arranged at the bottom of the upper flower bed, a water pump is arranged in the water collecting tank, a water supply pipe is arranged on the top of the water pump, a water baffle is arranged in the upper flower bed, a water suction hole is arranged at the upper part, planting soil and plants are arranged in the upper cavity position of the upper flower bed, a lifting ring is arranged on the upper flower bed, a lower water supply assembly and a lower nozzle are arranged at the lower part of the water supply pipe, and an upper water supply assembly is arranged at the upper part.

[0011] Preferably, in step three, a canopy base is arranged on the top surface of the concrete retaining wall, an inner pull assembly and rivets are arranged on the canopy base and anchored to the top surface of the concrete retaining wall, a canopy base is arranged, a crossbeam is arranged on the top of the canopy column, a foldable support is arranged on the crossbeam, a canopy membrane is arranged on the outside of the foldable support, an outer pull ring is arranged at the corner of the canopy membrane, and the outer pull ring is anchored to the anchor ring through a long pull rod.

[0012] A lightweight embankment widened with foamed concrete on complex steep terrain, obtained by any of the methods described above.

[0013] The beneficial effects of the present invention are: 1) The present invention adopts foam concrete to construct and widen the embankment, which reduces the deadweight of the embankment, thereby reducing the settlement of the new roadbed, and further reduces the differential settlement between the new and old roadbeds, reducing the subsequent maintenance costs.

[0014] 2) Before the foam concrete is constructed, the present invention sets a protective canopy on the top of the concrete retaining wall. The protective canopy covers the pouring position of the widened embankment, ensuring that the foam concrete construction is not affected by the weather, thereby improving the construction progress.

[0015] 3) The present invention uses a variety of anchoring components to anchor the new and old roadbeds, thereby improving the integrity between the original roadbed and the widened roadbed.

[0016] 4) The present invention arranges a variety of greening measures on the outside of the prefabricated baffle to form a flower bed system, which improves the aesthetics of the roadbed widening thickness, and arranges water collection troughs and water collection boxes to facilitate watering of the flower beds, promote the sustainable development of the project, and has good environmental benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a foamed concrete widened lightweight embankment on a complex steep terrain; Figure 2 It is a schematic diagram of a steel bar anchor; Figure 3 It is a schematic diagram of a prefabricated baffle; Figure 4 It is a schematic diagram of the anchoring system of the concrete retaining wall; Figure 5 is a schematic diagram of the anchor assembly; Figure 6 This is a schematic diagram of widening the roadbed for greening; Figure 7 It is a schematic diagram of the flower bed system; Figure 8 It is a three-dimensional schematic diagram of the protective canopy.

[0018] Explanation of reference numerals: 1. Concrete retaining wall 2. Original road surface 3. Prefabricated baffle base 4. Prefabricated baffle 5. Anchor ring 6. Steel bar anchor 7. Front anchor bar 8. Angle steel 9. Rear L-shaped anchor bar 10. Anchor hole protection 11. Anchor assembly 12. Base placement plate 13. Rear groove 14. Reinforced bottom plate 15. Anchor L-shaped steel bar 16. Shear-resistant steel 17. Foam concrete 18. Rib column 19. Water supply pipe 20. Water hole 21. Middle flower bed 22. Lower Water supply assembly 23. Lower nozzle 24. Lower flower bed 25. Leveling layer 26. Plants 27. Upper flower bed 28. Upper water supply assembly 29. Water pump 30. Water collecting box 31. Water baffle 32. Lifting ring 33. Water suction hole 34. Water collecting trough 35. Widening embankment 36. Rivet 37. Awning column 38. Protective canopy 39. Foldable support 40. Awning membrane 41. Outer pull ring 42. Long pull rod 43. Awning base 44. Inner pull assembly 45. Anchor ring. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0020] Embodiment 1 As an example, Figures 1 to 8 As shown, this complex steep terrain foam concrete widening lightweight embankment includes a concrete retaining wall 1, an original road surface 2, a prefabricated baffle 4, a steel anchor 6, an anchor assembly 11, a protective canopy 38 and a widened roadbed 35; Foamed concrete 17 is poured on the outside of the concrete retaining wall 1 to form a widened embankment 35. The widened embankment 35 is in a stepped structure. Prefabricated baffles 4 are arranged on the outside of the widened embankment 35. A prefabricated baffle base 3 is fixed to the bottom of each layer of prefabricated baffles 4. A flower bed is arranged on the outside of the prefabricated baffles 4.

[0021] Specifically, Figure 6 The foam concrete 17 is poured in layers, a concrete surface layer is set on the top of each layer, rib columns 18 are set between the prefabricated baffles 4, an upper flower bed 27 is set on the concrete surface layer outside the prefabricated baffles 4, a middle flower bed 21 is set outside the rib columns 18, a water collection trough 34 is set on the concrete surface layer of the top layer, a leveling layer 25 is set below the prefabricated baffles 4 at the foot of the widened embankment 35, and a lower flower bed 24 is set on the top surface of the leveling layer 25.

[0022] like Figure 7As shown, a water collecting box 30 is arranged at the bottom of the upper flower bed 27, a water pump 29 is arranged in the water collecting box 30, a water supply pipe 19 is arranged on the top of the water pump 29, a water baffle 31 is arranged in the upper flower bed 27, a water suction hole 33 is arranged at the upper part, planting soil is arranged in the upper cavity position of the upper flower bed 27, and plants 26 are arranged, a lifting ring 32 is arranged on the upper flower bed 27, a lower water supply assembly 23 and a lower nozzle 22 are arranged at the lower part of the water supply pipe 19, and an upper water supply assembly 28 is arranged at the upper part.

[0023] A water collecting trough 34 is arranged on the top of the prefabricated baffle plate 4 at the top layer, water holes 20 are arranged on the side of the flower bed, and plants 26 are arranged in the flower bed.

[0024] Embodiment 2 As another embodiment, this embodiment 2 proposes, based on the embodiment 1, a more specific foamed concrete widening lightweight embankment for complex steep terrain: like Figure 4 As shown, anchor holes are arranged on the concrete retaining wall 1, anchor hole protection 10 is arranged outside the anchor holes, anchors are arranged in the anchor holes, steel bar anchors 6 are arranged on the concrete retaining wall 1, the steel bar anchors 6 include rear L-shaped anchor bars 9, angle steels 8 and front anchor bars 7, anchor rings 5 ​​are arranged on the prefabricated baffle plate 4, a prefabricated baffle plate base 3 is arranged at the bottom of the prefabricated baffle plate 4, a base placement plate 12 is arranged at the bottom of the prefabricated baffle plate base 3, the base placement plate 12 is anchored to the concrete retaining wall 1 with steel bars, a rear cut groove 13 is arranged on the platform of the concrete retaining wall 1, a reinforcing bottom plate 14 is arranged in the groove, an anchor assembly 11 is arranged on the reinforcing bottom plate 14, and the anchor assembly 11 is composed of an anchoring L-shaped steel bar 15 and a shear-resistant steel 16.

[0025] like Figure 8 As shown, a protective canopy 38 is set when the foam concrete 17 is poured, an anchor ring 45 is set on the original road surface 2, a canopy base 43 is set on the top surface of the concrete retaining wall 1, an inner pull component 43 and a rivet 36 are set on the canopy base and anchored on the top surface of the concrete retaining wall 1, a canopy column 37 is set on the canopy base 43, a crossbeam is set on the top of the canopy column 37, a foldable support 39 is set on the crossbeam, a canopy membrane 40 is set on the outside of the foldable support 39, an outer pull ring 41 is set at the corner of the canopy membrane 40, and the outer pull ring 41 is anchored to the anchor ring 45 through a long pull rod 42.

[0026] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0027] Embodiment 3 As another embodiment, this embodiment 3 proposes, based on the embodiments 1 and 2, a construction method for widening a lightweight embankment with foamed concrete on complex steep terrain, comprising the following steps: Step 1: Anchor hole construction: Use anchor construction machinery to drill anchor holes and set anchor hole protection at the anchor hole mouth. Construction of concrete retaining wall anchoring system: First, manufacture the steel bar anchoring assembly 6 and the anchoring assembly 11 in sequence according to the requirements, then construct the rear groove 13 on the platform of the concrete retaining wall 1, then install the steel bar anchor rod assembly 6 on the concrete retaining wall 1, install the anchoring assembly 11 in the rear groove 13, and install the base placement plate 12 at the position where the prefabricated baffle base needs to be installed.

[0028] Step 2, prefabricated baffle construction: After installing the prefabricated base 4, the prefabricated baffle 5 is hoisted, a water collecting trough 34 is reserved on the top prefabricated baffle, and then the anchor rod is installed.

[0029] Step 3, installation of protective canopy: install anchor ring 45 on the original road surface 2, set canopy base 43 on the top surface of concrete retaining wall, then fix it with rivets 36 and inner pull assembly 44, then install canopy columns 37 and foldable supports 39, install canopy membrane 40, install long pull rod 42 on the outer pull ring 41 at the corner of canopy membrane, and anchor the other end of the long pull rod on the anchor ring.

[0030] Step 4: Foam concrete construction: pour foam concrete 17 in layers. After each layer is poured, a concrete surface layer is constructed on the platform.

[0031] Step 5: Greening construction: Figure 7 As shown, a leveling layer 25 is constructed at the bottom of the prefabricated baffle 4, and then the lower flower bed 24 and the middle flower bed 21 are installed on the leveling layer 25, and the upper flower bed 27 and the middle flower bed 21 are installed on the concrete surface layer in the middle position. The flower bed is installed through a lifting ring 32, and then a water pump 29 and a water supply pipe 19, a lower water supply assembly 22, a lower nozzle 23 and an upper water supply assembly are installed, and then planting soil is set and plants 26 are planted.

[0032] It should be noted that the parts in this embodiment that are the same or similar to those in Embodiments 1 and 2 can be referenced to each other and will not be described in detail in this application.

[0033] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A construction method for widening lightweight embankments with foamed concrete on complex and steep terrain, characterized in that: The following steps are involved: Step 1: Install the base placement plate on the side of the concrete retaining wall corresponding to the position of the prefabricated baffle base; Step 2: Install the prefabricated baffle base, hoist the prefabricated baffle, and anchor it to the concrete retaining wall; Step 3: Set up a canopy base on the top surface of the concrete retaining wall, and then install a protective canopy, which is connected to the original road surface through a long tie rod; Step 4: Pour foam concrete in layers between the concrete retaining wall and the prefabricated retaining plate. After each layer is poured, construct a concrete surface layer on the platform. Step 5. Construct a leveling layer on the outside of the prefabricated baffle on the bottom layer, then install a flower bed on the leveling layer and the concrete surface layer, set up a water collection tank, and then plant plants in the flower bed.

2. The construction method of widening lightweight embankment with foamed concrete on complex steep terrain according to claim 1 is characterized in that: In step one, first make the steel bar anchoring assembly and the anchoring assembly, then construct the back groove on the platform of the concrete retaining wall, then install the steel bar anchor rod assembly on the concrete retaining wall, install the anchoring assembly in the back groove, and install the base placement plate at the location where the prefabricated baffle base needs to be installed.

3. The construction method of widening lightweight embankment with foamed concrete on complex steep terrain according to claim 1 is characterized in that: Anchor holes are arranged on the concrete retaining wall, anchor hole protection is arranged outside the anchor holes, anchors are arranged in the anchor holes, steel bar anchors are arranged on the concrete retaining wall, the steel bar anchors include rear L-shaped anchor bars, angle steels and front anchor bars, anchor rings are arranged on the prefabricated baffle plates, prefabricated baffle plate bases are arranged at the bottom of the prefabricated baffle plates, a base placement plate is arranged at the bottom of the prefabricated baffle plate base, the base placement plate is anchored to the concrete retaining wall with steel bars, a rear cut groove is arranged on the platform of the concrete retaining wall, a reinforced bottom plate is arranged in the groove, an anchor assembly is arranged on the reinforced bottom plate, and the anchor assembly consists of anchoring L-shaped steel bars and shear-resistant steel.

4. The construction method of widening lightweight embankment with foamed concrete on complex steep terrain according to claim 1 is characterized in that: In step 4, the foam concrete is poured in layers, a concrete surface layer is arranged on the top of each layer, and rib columns are arranged between the prefabricated baffles; in step 5, an upper flower bed is arranged on the concrete surface layer outside the prefabricated baffles, a middle flower bed is arranged outside the rib columns, a sump is arranged on the concrete surface layer of the top layer, a leveling layer is arranged under the prefabricated baffles at the foot of the widened embankment, and a lower flower bed is arranged on the top surface of the leveling layer.

5. The construction method of widening lightweight embankment with foamed concrete on complex steep terrain according to claim 4 is characterized in that: A water collecting tank is arranged at the bottom of the upper flower bed, a water pump is arranged in the water collecting tank, a water supply pipe is arranged on the top of the water pump, a water baffle is arranged in the upper flower bed, a water suction hole is arranged at the upper part, planting soil and plants are arranged in the upper cavity position of the upper flower bed, a lifting ring is arranged on the upper flower bed, a lower water supply assembly and a lower nozzle are arranged at the lower part of the water supply pipe, and an upper water supply assembly is arranged at the upper part.

6. The construction method of widening lightweight embankment with foamed concrete on complex steep terrain according to claim 1 is characterized in that: In step three, a canopy base is arranged on the top surface of the concrete retaining wall, an inner pull assembly and rivets are arranged on the canopy base and anchored on the top surface of the concrete retaining wall, a canopy column is arranged on the canopy base, a crossbeam is arranged on the top of the canopy column, a foldable support is arranged on the crossbeam, a canopy membrane is arranged on the outside of the foldable support, an outer pull ring is arranged at the corner of the canopy membrane, and the outer pull ring is anchored to the anchor ring through a long pull rod.

7. Widening lightweight embankment with foamed concrete on complex and steep terrain, characterized by: Obtained by the method according to any one of claims 1 to 6.

Images