CN-224227581-U - Roadbed structure

CN224227581UCN 224227581 UCN224227581 UCN 224227581UCN-224227581-U

Abstract

The utility model belongs to the technical field of highway subgrades, and discloses a subgrade structure. The roadbed structure comprises a flexible layer, a first rigid layer, an aquifer, a second rigid layer and a pavement structure layer which are sequentially arranged from bottom to top, wherein the first rigid layer is provided with a drainage pipeline, the aquifer is provided with a water storage cavity, accumulated water of the pavement structure layer can flow into the water storage cavity, accumulated water of the water storage cavity flows out along the drainage pipeline when the drainage pipeline is in an open state, and accumulated water of the water storage cavity is applied to the first rigid layer when the drainage pipeline is in a closed state. According to the roadbed structure provided by the utility model, in the pre-pressing stage of construction, the drainage pipeline is in a closed state, water is injected into the water storage cavity, the gravity pre-pressing roadbed of accumulated water is utilized, the deformation of the roadbed after construction is reduced, no barrier exists on the road surface structure layer, vehicles are allowed to pass, additional construction of a temporary road is not needed, and the construction quantity is reduced. After the construction is finished, the drainage pipeline is in an open state, accumulated water on the road surface flows into the water storage layer, and then is discharged from the drainage pipeline.

Inventors

XUE HAOCHEN
WANG QIYENAN
WANG JUAN
DUAN BING
LIN WEIKANG

Assignees

浙江数智交院科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250523

Claims (10)

1. A subgrade structure, comprising: The novel water storage device comprises a flexible layer (1), a first rigid layer (2), a water storage layer (3), a second rigid layer (4) and a pavement structure layer (5) which are sequentially arranged from bottom to top, wherein the first rigid layer (2) is provided with a water storage cavity (31), water accumulated in the pavement structure layer (5) can flow into the water storage cavity (31), when the water storage pipeline (21) is in an open state, water accumulated in the water storage cavity (31) flows out along the water storage pipeline (21), and when the water storage pipeline (21) is in a closed state, water accumulated in the water storage cavity (31) is applied to the first rigid layer (2).
2. Roadbed structure according to claim 1, wherein the aquifer (3) comprises a plurality of said water storage cavities (31), a plurality of said water storage cavities (31) being arranged at intervals along a first direction and/or a second direction, said first direction being perpendicular to said second direction.
3. Roadbed structure according to claim 2, wherein the water storage cavities (31) of two adjacent rows are arranged in a staggered manner, and the water storage cavities (31) of two adjacent columns are arranged in a staggered manner.
4. The subgrade structure of claim 2, wherein said drain pipe (21) includes a plurality of sets of drain channels (211) disposed below said water storage cavity (31), each set of said drain channels (211) extending in said first direction and communicating with said water storage cavity (31) thereabove, said plurality of sets of drain channels (211) being spaced apart along said second direction.
5. Roadbed structure according to claim 1, wherein the second rigid layer (4) is provided with a plurality of water injection holes (41), the water injection holes (41) being located above the water storage cavities (31) and communicating with the water injection holes (41).
6. Roadbed structure according to claim 5, wherein a filter screen is provided in each water injection hole (41).
7. Roadbed structure according to claim 1, wherein the bottom end of the water storage chamber (31) is provided with a communication piece (6), the communication piece (6) is provided with a communication channel, and the communication channel is communicated with the water storage chamber (31) and the drainage pipeline (21).
8. Roadbed structure according to claim 7, wherein the first rigid layer (2) is provided with a drain hole, which is located below the water storage cavity (31), in which the communication piece (6) is provided.
9. Roadbed structure according to claim 8, wherein the communicating member (6) is a three-way joint, one of the channels of the communicating member (6) is arranged in the drainage hole to communicate with the water storage cavity (31), and the other two channels are respectively communicated with drainage pipelines (21) at two sides of the water storage cavity (31).
10. Roadbed structure according to any of claims 1-9, wherein the drain pipe (21) is provided with a valve.

Description

Roadbed structure Technical Field The utility model relates to the technical field of highway subgrades, in particular to a subgrade structure. Background When the roadbed is built in a soft soil area, the problems of instability risk of the roadbed structure and differential settlement control after construction are particularly remarkable, the problems cause the failure of the drainage gradient of the pavement, the accumulated water of the pavement cannot be timely discharged, the vehicle is caused to skid, and potential safety hazards exist. Aiming at the problems, the roadbed is pre-pressed in the construction stage in engineering, the settlement of the roadbed after construction is reduced, and the drainage gradient of the road surface is ensured. But the earth and stone or water bag adopted in the pre-pressing can occupy the road to prevent vehicles from passing, and additional road construction is needed for vehicles to pass, so that the workload is increased. Moreover, the ecological environment is destroyed when the earth and square stones are mined. Disclosure of utility model The utility model aims to provide a roadbed structure which allows vehicles to pass during the pre-pressing of the roadbed, reduces the workload and protects the ecological environment. To achieve the purpose, the utility model adopts the following technical scheme: A roadbed structure, comprising: The flexible layer, first rigidity layer, water storage layer, second rigidity layer and the road surface structural layer that set gradually from bottom to top, this first rigidity layer is provided with drainage pipe, and this water storage layer is provided with the water storage chamber, and the ponding of this road surface structural layer can flow into this water storage chamber, and when this drainage pipe was in the open state, the ponding of this water storage chamber was followed this drainage pipe and was flowed, and when this drainage pipe was in the closed state, the ponding application of force of this water storage chamber was in this first rigidity layer. The roadbed structure comprises a plurality of water storage cavities, wherein the water storage cavities are arranged at intervals along a first direction and/or a second direction, and the first direction is perpendicular to the second direction. The roadbed structure comprises two adjacent rows of water storage cavities which are arranged in a staggered manner, and two adjacent columns of water storage cavities which are arranged in a staggered manner. The roadbed structure comprises a plurality of groups of drainage channels arranged below the water storage cavity, wherein each group of drainage channels extends along the first direction and is communicated with the water storage cavity above the drainage channels, and the plurality of groups of drainage channels are arranged at intervals along the second direction. The roadbed structure is characterized in that the second rigid layer is provided with a plurality of water injection holes, and the water injection holes are positioned above the water storage cavity and are communicated with the water injection holes. Above-mentioned roadbed structure, wherein, every this water injection downthehole filter screen that all is provided with. Above-mentioned roadbed structure, wherein, the bottom of this water storage chamber is provided with the intercommunication piece, and this intercommunication piece has the intercommunication passageway, and this intercommunication passageway communicates in this water storage chamber and this drainage pipe. The roadbed structure is characterized in that the first rigid layer is provided with a drain hole, the drain hole is positioned below the water storage cavity, and the communicating piece is arranged in the drain hole. Above-mentioned roadbed structure, wherein, this communication piece is three way connection, and one of them passageway of this communication piece sets up in this wash port in order to communicate in this retaining chamber, and two other passageways communicate the drain pipe in this retaining chamber both sides respectively. Above-mentioned roadbed structure, wherein, this drainage pipe is provided with the valve. The utility model has the beneficial effects that: The roadbed structure provided by the utility model is characterized in that a flexible layer, a first rigid layer, an aquifer, a second rigid layer and a pavement structure layer are sequentially built from bottom to top during construction, wherein the first rigid layer comprises a drainage pipeline, the aquifer comprises a water storage cavity, and the water storage cavity, the drainage pipeline and the pavement structure layer are communicated. In the pre-pressing stage of construction, the drainage pipeline is in a closed state, water is injected into the water storage cavity, the gravity of accumulated water is utilized to pre-press the roadbed, the deformation of the roadbed after constr