Rapid consolidation construction pavement structure

Abstract

The utility model relates to the technical field of pavement settlement prevention and control, in particular to a rapid consolidation construction pavement structure, which comprises a normal roadbed and a repair groove excavated on a soft soil roadbed at the middle section of the normal roadbed, and the repair groove is filled with a consolidation layer. The first supporting grooves are located in the normal roadbed at the front end and the rear end of the soft soil roadbed, the second supporting grooves are located in the normal roadbed at the left side and the right side of the soft soil roadbed, and the bottoms of the first supporting grooves are deeper than the second supporting grooves; the curing layer comprises a first backfill layer, a second backfill layer and a leveling layer from bottom to top, a first supporting beam is arranged in the first backfill layer, the two ends of the first supporting beam are erected in the first supporting grooves respectively, a second supporting beam is arranged in the second backfill layer, and the two ends of the second supporting beam are erected in the second supporting grooves respectively. The utility model has the advantages of multidirectional pressure bearing capacity and quick consolidation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the road surface settlement prevention technical field, concretely is a kind of quick consolidation construction pavement structure. BACKGROUND

[0002] In road construction engineering, the linking part between soft soil subgrade and normal subgrade section constitutes the fragile area of subgrade. This part of area may occur longitudinal and transverse cracks under the action of long-time bearing road vehicle load, and then cause uneven subsidence of pavement, finally have adverse effects on the stability and serviceability of the whole subgrade.

[0003] After a large amount of retrieval, a solid structure construction for soft soil road section foundation is disclosed in CN212533577U, which comprises: a soft soil subgrade section and a support plate, a consolidation groove is excavated on the soft soil subgrade section between two normal subgrade sections, and a solidification structure for improving the strength of the soft soil subgrade section is laid on both sides of the consolidation groove, a plurality of support plates of the same specification and equidistantly distributed are installed in the consolidation groove excavated on the soft soil subgrade section, the support plate is in the shape of "J", and the horizontal sections on both sides of the support plate are fixedly installed on the solidification structures on both sides of the soft soil subgrade section. In the prior art, a consolidation groove is excavated on the soft soil subgrade section, and a solidification structure is laid on both sides of the consolidation groove, so that a fixed support structure is formed, which facilitates the installation of subsequent support plates. The support plate cooperates with a sleeper to form a laying base, so that the soft soil subgrade section can avoid the problem of collapse of the pavement due to overpressure when laying asphalt pavement subsequently. The two solidification structures form a reinforced support wall, which can improve the stability of the support plate and avoid the problem of collapse and loss of asphalt poured between the two solidification structures.

[0004] However, after the road is completed, the above-mentioned foundation solid structure construction can only bear the pressure from vehicles driving in a single direction at the intersection, and the pressure perpendicular to the current driving direction will cause a certain degree of collapse due to the lack of support structure in the subgrade, thereby causing the pavement to undulate after being pressed and affecting the safety of driving. Therefore, a quick consolidation construction pavement structure is needed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a quick consolidation construction pavement structure, which has the advantages of multi-directional pressure bearing capacity and quick consolidation, and solves the problem that the existing road foundation structure can only bear pressure in a single direction when heavy vehicles pass through, and the stress perpendicular to the driving direction is prone to collapse and causes the pavement to undulate and affects the safety of driving.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of fast consolidation construction pavement structure, including normal subgrade and the repair groove excavated on soft soil subgrade in normal subgrade middle section, the repair groove is filled with solidification layer, the repair groove includes the first support groove on the normal subgrade of the front and rear ends of soft soil subgrade and the second support groove on the normal subgrade of the left and right sides of soft soil subgrade, the first support groove bottom depth is deeper than second support groove;The solidification layer includes first backfill layer, second backfill layer and leveling layer from bottom to top, first backfill layer is equipped with first support beam, and the two ends of first support beam are respectively erected in first support groove, second backfill layer is equipped with second support beam, and the two ends of second support beam are respectively erected in second support groove.

[0007] Preferably, the first backfill layer is paved with large-diameter gravel, and the first backfill layer is filled from the bottom of the soft soil subgrade to the top of the first support beam.

[0008] In the design, sufficient space is left between the large-diameter gravel, which helps to quickly drain the accumulated water in the subgrade and prevent the softening of the foundation caused by water accumulation.

[0009] The large-diameter gravel has high compressive strength, which can effectively disperse and withstand the pressure from the vehicles above, enhancing the overall stability of the subgrade.

[0010] The large-diameter gravel material is easy to obtain and simple to construct, which can quickly fill the specified position and improve the construction efficiency.

[0011] Preferably, the second backfill layer is paved with three-way soil, and the second backfill layer is filled from the top of the first support beam to the top of the second support beam.

[0012] In the design, the three-way soil is mixed from multiple materials, which has high compressive strength and shear strength, can effectively support the load above, and prevent the subgrade from collapsing.

[0013] The binding material in the three-way soil can enhance the binding force between particles, improve the integrity and durability of the subgrade.

[0014] The three-way soil material has relatively low cost and is convenient to construct, which meets the economic principle.

[0015] Preferably, the leveling layer is paved with fine stone concrete, and the leveling layer is filled from the top of the second support beam to the upper end surface of the normal subgrade, and the leveling layer is provided with a steel mesh on the opposite side of the second backfill layer.

[0016] In the design, the fine stone concrete has fine texture and good plasticity, which can ensure the flatness of the pavement leveling layer and improve the driving comfort.

[0017] The laying of the steel sheet mesh can increase the bonding force between the leveling layer and the second backfill layer, prevent separation between layers, and enhance the overall stability of the structure.

[0018] The steel sheet mesh can effectively disperse stress, reduce cracks caused by temperature changes or load effects, and prolong the service life of the pavement.

[0019] Preferably, the steel sheet mesh is laid in the second support beam and the repair groove located on the normal roadbed.

[0020] In the design, the steel sheet mesh is not only laid under the leveling layer, but also covers the second support beam and other parts of the repair groove, comprehensively improving the bearing capacity and anti-deformation capacity of the roadbed.

[0021] The laying of the steel sheet mesh can simplify the construction process, reduce the workload caused by separate reinforcement, and shorten the construction period.

[0022] As a durable material, the steel sheet mesh is not easily damaged, reducing the cost of later maintenance.

[0023] Preferably, the first support beam and the second support beam are both designed as channel steels, and the first support beam and the second support beam do not contact each other on one side and are filled with the second backfill layer.

[0024] In the design, the channel steel has a high cross-sectional modulus and moment of inertia, can withstand large bending moments and shear forces, and ensures the stability of the roadbed.

[0025] The channel steels do not directly contact each other and are filled with the second backfill layer, which can adapt to the slight deformation of the foundation and reduce the damage to the pavement caused by foundation settlement.

[0026] The channel steel material is easy to process and install, and can be closely combined with other materials, improving the construction efficiency and quality. At the same time, the design of the channel steel also facilitates later inspection and maintenance.

[0027] Compared with the prior art, the utility model has the beneficial effects as follows:

[0028] The first support groove and the second support groove are arranged at the front and back of the soft soil subgrade, and the first support beam and the second support beam are arranged in the first support groove and the second support groove respectively, so that a longitudinal and transverse intersecting support network is formed, and the bearing capacity of the pavement structure in multiple directions is effectively improved. The first backfill layer is made of large-diameter gravel, which has good drainage performance and high compressive strength, can quickly drain water in the subgrade, and effectively disperses and bears the pressure from the vehicle above. The second backfill layer is made of three-way soil, which has high compressive strength and shear strength, can effectively support the load above, and prevent the subgrade from collapsing. The reasonable collocation of the backfill layers made of different materials not only ensures the rapid consolidation of the subgrade, but also improves the overall stability and bearing capacity of the subgrade.

[0029] In summary, the utility model discloses a multilayer support structure, the reasonable collocation of the backfill layers made of different materials and the construction method of rapid consolidation, effectively improve the bearing capacity of the pavement structure in multiple directions, solve the problem that the existing road subgrade structure is easy to collapse and causes the road surface to undulate when heavy vehicles pass through, thereby ensuring the safety of driving. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the front structure schematic drawing of the utility model;

[0031] Figure 2 It is the structure schematic drawing after normal subgrade excavation of the utility model;

[0032] Figure 3 It is the section structure schematic drawing after filling of the utility model;

[0033] Figure 4 It is the section structure schematic drawing before filling of the utility model.

[0034] In the drawing: 1, normal subgrade;11, repair groove;111, first support groove;112, second support groove;2, solidification layer;21, first support beam;211, first backfill layer;22, second support beam;221, second backfill layer;23, steel mesh;231, leveling layer. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] Embodiment One

[0037] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the utility model provides an embodiment: a kind of fast consolidation construction pavement structure, including normal subgrade 1 and the soft soil subgrade in the middle section of normal subgrade 1 excavated repair groove 11, repair groove 11 is filled with solidified layer 2, repair groove 11 includes the first support groove 111 on the front and rear ends of soft soil subgrade normal subgrade 1 and the second support groove 112 on the left and right sides of soft soil subgrade normal subgrade 1, the depth of first support groove 111 bottom is deeper than second support groove 112;Solidified layer 2 is from lower to upper and includes first backfill layer 211, second backfill layer 221 and leveling layer 231, first backfill layer 211 is equipped with first support beam 21, and the two ends of first support beam 21 are respectively erected in first support groove 111, and second backfill layer 221 is equipped with second support beam 22, and the two ends of second support beam 22 are respectively erected in second support groove 112.

[0038] Specifically, repair groove 11 is designed to include the first support groove 111 on the front and rear ends of soft soil subgrade and the second support groove 112 on the left and right sides of soft soil subgrade. This design enables solidified layer 2 to obtain support in multiple directions. First support beam 21 and second support beam 22 are respectively erected in first support groove 111 and second support groove 112, forming a longitudinal and transverse intersecting support network, effectively improving the load-carrying capacity of the pavement structure in multiple directions. First backfill layer 211 is paved with large-diameter gravel. This material has good drainage performance and high compressive strength, can quickly drain water in the subgrade, and effectively disperse and withstand the pressure from the vehicle above. Second backfill layer 221 is paved with three-way soil. Three-way soil has high compressive strength and shear strength, can effectively support the load above, and prevent the subgrade from collapsing. The reasonable arrangement of different material backfill layers not only ensures the rapid consolidation of the subgrade, but also improves the overall stability and load-carrying capacity of the subgrade.

[0039] In summary, the utility model effectively improves the load-carrying capacity of the pavement structure in multiple directions through the multi-level support structure, the reinforcing effect of the reasonable arrangement of different material backfill layers, and the rapid consolidation construction method, solves the problem of existing road subgrade structure collapsing easily when heavy vehicles pass through and causing the road surface to undulate, thereby ensuring driving safety.

[0040] Embodiment Two

[0041] In order to make the structure of solidified layer more stable, as shown in Figure 3 and Figure 4As shown, in this embodiment, the first backfill layer 211 is paved with large-diameter gravel, and fills from the bottom of the soft soil subgrade to the top of the first support beam 21.

[0042] In the design, sufficient gaps are left between the large-diameter gravels, which helps to quickly drain water in the subgrade and prevent the softening of the foundation caused by water accumulation.

[0043] The large-diameter gravel has high compressive strength, which can effectively disperse and withstand the pressure from the vehicles above, enhancing the overall stability of the subgrade.

[0044] The large-diameter gravel material is easy to obtain and simple to construct, which can quickly fill to the designated position, improving the construction efficiency.

[0045] Further, the second backfill layer 221 is paved with concrete, and fills from the top of the first support beam 21 to the top of the second support beam 22.

[0046] In the design, the concrete is mixed with multiple materials, which has high compressive strength and shear strength, can effectively support the load above, and prevent the subgrade from collapsing.

[0047] The binding material in the concrete can enhance the cohesion between particles, improving the integrity and durability of the subgrade.

[0048] The concrete material has relatively low cost and is convenient to construct, which meets the economic principle.

[0049] Further, the leveling layer 231 is paved with fine stone concrete, and fills from the top of the second support beam 22 to the upper end surface of the normal subgrade 1. The leveling layer 231 is provided with a steel mesh 23 on the opposite side of the second backfill layer 221.

[0050] In the design, the fine stone concrete has a delicate texture and good plasticity, which can ensure the flatness of the pavement leveling layer 231 and improve the driving comfort.

[0051] The laying of the steel mesh 23 can increase the cohesion between the leveling layer 231 and the second backfill layer 221, prevent interlayer separation, and enhance the overall stability of the structure.

[0052] The steel mesh 23 can effectively disperse stress, reduce the occurrence of cracks caused by temperature changes or load actions, and prolong the service life of the pavement.

[0053] Further, the steel mesh 23 is laid in the second support beam 22 and the repair groove 11 located on the normal subgrade 1.

[0054] The steel sheet mesh 23 is not only laid under the leveling layer 231, but also covers the second support beam 22 and other parts of the repair groove 11, which comprehensively improves the bearing capacity and anti-deformation capacity of the roadbed.

[0055] The laying of the steel sheet mesh 23 can simplify the construction process, reduce the workload caused by separate reinforcement, and shorten the construction period.

[0056] The steel sheet mesh 23 is a durable material and is not easily damaged, which reduces the maintenance cost in the later period.

[0057] Further, the first support beam 21 and the second support beam 22 are both designed as channel steels, and the first support beam 21 and the second support beam 22 are not in contact on the opposite side and are filled by the second backfill layer 221.

[0058] The channel steel has a high cross-sectional modulus and moment of inertia, can bear a large bending moment and shear force, and ensures the stability of the roadbed.

[0059] The channel steels are not in direct contact and are filled by the second backfill layer 221, which can adapt to the slight deformation of the foundation and reduce the damage to the pavement caused by the settlement of the foundation.

[0060] The channel steel material is easy to process and install, and can be closely combined with other materials, which improves the construction efficiency and quality. At the same time, the design of the channel steel is also convenient for later inspection and maintenance.

[0061] In use, the position of the soft soil roadbed is marked on the normal roadbed 1, and the boundary of the repair groove 11 is marked, including the first support groove 111 position located at the front and rear ends of the soft soil roadbed and the second support groove 112 position located at the left and right sides of the soft soil roadbed. According to the marked boundary, the repair groove 11 is excavated in the normal roadbed 1. The bottom depth of the first support groove 111 needs to be deeper than that of the second support groove 112 to adapt to the needs of different levels of support structure.

[0062] The first support beam 21 is erected by the first support slot 111. The two ends of the first support beam 21 should be stably placed on the bottom of the first support slot 111 to ensure the stability of the support. Large-grained gravel is used to pave under and around the first support beam 21 to form the first backfill layer 211. When filling, it should be ensured that the gravel is closely arranged to provide good drainage and support performance. The second support beam 22 is erected by the second support slot 112. The two ends of the second support beam 22 should also be stably placed on the bottom of the second support slot 112. Above and around the first support beam 21, three-paste soil is used to pave to form the second backfill layer 221. When filling, it should be ensured that the three-paste soil is evenly distributed and fully compacted to improve the stability of the overall structure. Above the second backfill layer 221, especially in the second support beam 22 and the rest of the repair slot 11, steel mesh 23 is laid. The steel mesh 23 can enhance the integrity and crack resistance of the structure. Fine stone concrete is used to pave above the steel mesh 23 to form the leveling layer 231. The leveling layer 231 should be filled to be flush with the upper end surface of the normal roadbed 1 to ensure the flatness of the road surface. After the filling is completed, the road surface structure is maintained to ensure that the solidification layer 2 is fully hardened. During this period, the stability and integrity of the road surface structure should be checked regularly, and any potential problems should be handled in a timely manner.

[0063] It is obvious to a person skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in any respect, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A rapid consolidation construction pavement structure, comprising a normal roadbed (1) and a repair groove (11) excavated on a soft soil roadbed in the middle section of the normal roadbed (1), and a solidified layer (2) filled in the repair groove (11), characterized in that: the repair groove (11) comprises first support grooves (111) on the normal roadbed (1) at the front and rear ends of the soft soil roadbed and second support grooves (112) on the normal roadbed (1) at the left and right sides of the soft soil roadbed, and the first support grooves (111) are deeper than the second support grooves (112) in depth; the solidified layer (2) comprises a first backfill layer (211), a second backfill layer (221) and a leveling layer (231) from bottom to top, the first backfill layer (211) is provided with a first support beam (21), both ends of the first support beam (21) are respectively arranged in the first support grooves (111), the second backfill layer (221) is provided with a second support beam (22), both ends of the second support beam (22) are respectively arranged in the second support grooves (112).

2. A rapid consolidation construction pavement structure according to claim 1, characterized in that, The first backfill layer (211) is paved with large-diameter gravel, and the first backfill layer (211) is filled from the bottom of the soft soil roadbed to the top of the first support beam (21).

3. The rapid consolidation construction pavement structure according to claim 1, wherein, The second backfill layer (221) is paved with three-way soil, and the second backfill layer (221) is filled from the top of the first support beam (21) to the top of the second support beam (22).

4. The rapid consolidation construction pavement structure according to claim 1, wherein, The leveling layer (231) is paved with fine stone concrete, and the leveling layer (231) is filled from the top of the second support beam (22) to the upper end surface of the normal roadbed (1), and the leveling layer (231) is provided with a steel mesh (23) on the side opposite to the second backfill layer (221).

5. A rapid consolidation construction pavement structure according to claim 4, characterized in that, The steel mesh (23) is laid in the second support beam (22) and the repair groove (11) on the normal roadbed (1).

6. The rapid consolidation construction pavement structure according to claim 1, wherein, The first support beam (21) and the second support beam (22) are both designed as channel steel, and the first support beam (21) and the second support beam (22) are not in contact on the side opposite to each other and are filled by the second backfill layer (221).

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