CN216275614U - A drain bar device for soft soil foundation pre-compaction drainage - Google Patents

Abstract

The utility model relates to a drainage plate device for prepressing drainage of a soft soil foundation, which comprises a drainage core plate and a filter membrane, wherein the cross section of the drainage core plate is a grid-shaped section and is provided with a plurality of vertical drainage channels; the bottom of the drainage core plate is sleeved with a communicating plate boot, and the periphery of the communicating plate boot is communicated with a plurality of drainage channels; the filter membrane is wrapped around the drainage core plate and around and at the bottom of the communicating plate boot, and the plurality of drainage channels are communicated with the filter membrane; the utility model has the beneficial effects that: 1. the long-term effective drainage of the drainage core plate is improved, and the problem of drainage capacity reduction caused by clogging of partial drainage channels is solved; 2. the communicating plate boot at the bottom of the drainage core plate makes the drainage channels mutually communicated and not independent from each other, and water in the drainage channel subjected to clogging can flow out from other drainage channels not subjected to clogging through the communicating plate boot, thereby enhancing the drainage capacity of the drainage core plate.

Description

A drainage board device for pre-pressurized drainage of soft soil foundation

technical field

The utility model belongs to the technical field of soft soil foundation reinforcement treatment devices, in particular to a drainage plate device used for pre-pressurized drainage of soft soil foundations.

Background technique

Soft soil is widely distributed in my country and has the characteristics of high compressibility, high water content, poor permeability and low strength. In actual engineering construction, it is usually necessary to consolidate soft soil foundations, and the most commonly used method is drainage consolidation method, which consists of a drainage system and a loading system. The drainage system includes a vertical drainage body and a horizontal drainage body, and the typical vertical drainage body is a plastic drainage board.

The plastic drainage board is usually composed of a plastic core board and a permeable non-woven fabric wrapped around the plastic core board. The plastic core board is mostly made of polyethylene material, which is the skeleton and drainage channel of the drainage board. The filter membrane is usually made of non-woven fabric and wrapped tightly against the plastic core board. During construction, the plastic drainage board is inserted into the soft soil foundation through the inserter. When the ground surface is loaded, excess pore water pressure is generated in the soft soil foundation, and the groundwater is driven by the pressure difference to pass through the outer filter membrane through the drainage channel on the plastic core board to be discharged to the upper horizontal drainage body, and then discharged from other places, so as to realize The purpose of accelerating the consolidation of soft soil.

However, during the upward drainage of the drainage board, some fine particles in the soil will enter the core board through the outer filter membrane. The particle size of these particles is very small, and there is a strong electrostatic effect between the particles, which is easy to form a flocculation or honeycomb structure, which will gradually accumulate in the core board, causing some drainage channels to block, affecting the drainage efficiency of the drainage board. Therefore, there is a need for a cost-effective measure to solve the problem of reduced drainage capacity due to clogging of drainage channels.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide a drainage board device for pre-pressurized drainage of soft soil foundations, so as to solve the problem of decreased drainage efficiency due to blockage of some drainage channels.

The purpose of the present utility model is achieved through the following technical solutions. This drainage plate device for pre-pressurized drainage of soft ground includes a drainage core plate member and a filter membrane, and the cross-section of the drainage core plate member is grid-shaped. The cross section of the core board is formed with several vertical drainage channels; the bottom of the drainage core plate is sleeved with a connecting shoe, and the surrounding of the connecting shoe is connected with a number of the drainage channels; the filter membrane is wrapped in The periphery of the drainage core plate and the periphery and bottom of the connecting shoe, and a plurality of the drainage channels are all communicated with the filter membrane.

The beneficial effects of the utility model are as follows: 1. The long-term effective drainage of the drainage core plate is improved by the arrangement of the above-mentioned drainage plate device, and the problem of the decrease of drainage capacity caused by the blockage of some drainage channels is solved; 2. The bottom of the drainage core plate is solved. The connecting shoe makes each drainage channel communicate with each other and is no longer independent of each other. The water in the blocked drainage channel can flow out from other unblocked drainage channels through the connecting shoe, thereby enhancing the drainage capacity of the drainage core panel. .

Preferably, the connecting shoe is a PVC container with a sealed bottom and an open top, and the cross-sectional area of the connecting shoe is larger than the cross-sectional area of the drainage core board; in this way, it can be formed at the bottom of the drainage core board. Water storage area, so that the water in the drainage channel can be collected downwards into the connecting shoe.

Preferably, the height of the communication shoe is 10 to 20 cm, the length is 2 to 4 mm larger than the cross-sectional length of the drainage core board, and the width is 6 to 8 mm larger than the cross-sectional width of the drainage core board; The water in the drainage channel can be collected downward into the connecting shoe, and then discharged upwards from the unblocked drainage channel, thereby enhancing the drainage capacity of the plastic drainage plate and ensuring the long-term effectiveness of the drainage process.

Preferably, the drainage core plate includes a base plate and a support plate, the support plates are fixed on both sides of the base plate, and are arranged in sequence along the length direction of the base plate; this not only makes the drainage core plate and the filter membrane The contact area is larger, and the drainage core panel is more stable during use.

Preferably, the support plates located on both sides of the base plate are symmetrically distributed, and the support plates and the base plate are distributed vertically; this further enhances the stability of the drainage core plate during use, and at the same time, the drainage performance is improved. Stability is also better.

Preferably, the drainage channel is formed between the adjacent support plates and the base plate, which makes the forming process of the drainage channel simpler and thus lowers the manufacturing cost.

Preferably, the material used in the manufacture of the drainage core board is PVC material, which makes the drainage core board more widely used, with stronger general performance and lower cost.

Description of drawings

FIG. 1 is a schematic view of the front structure of the drainage plate device of the present invention.

FIG. 2 is a schematic diagram of the cross-sectional structure of FIG. 1 A-A.

The symbols in the accompanying drawings are: 1, drainage core plate; 2, filter membrane; 3, drainage channel; 4, connecting shoe; 11, base plate; 12, support plate.

Detailed ways

The present utility model will be described in detail below in conjunction with the accompanying drawings: as shown in the accompanying drawings 1 and 2, the utility model includes a drainage core board member 1 and a filter membrane 2, and the material used for the production of the drainage core board member 1 is PVC material, The cross section of the drainage core plate 1 is a grid-like section, and a number of vertical drainage channels 3 are formed; the bottom of the drainage core plate 1 is sleeved with a connecting shoe 4, and the surrounding of the connecting shoe 4 is connected with several drainage channels. The channels 3 are all connected; the filter membrane 2 is wrapped around the drainage core plate 1 and around and the bottom of the connected shoe 4, and several drainage channels 3 are all communicated with the filter membrane 2; when the fine particles in the soft soil penetrate the filter membrane 2 When some of the drainage channels 3 cannot be drained upward due to accumulation on the drainage core plate 1, the water in the blocked channel can flow downward into the connecting shoe 4, and then be discharged upward from the channel that has not been blocked, thereby enhancing the drainage core. Drainage capacity of panel 1.

The connecting shoe 4 is a PVC container with a sealed bottom and an open top, and the cross-sectional area of the connecting shoe 4 is larger than that of the drainage core plate 1; The length of the cross section of the piece 1 is 2 to 4 mm larger, and the width is 6 to 8 mm larger than the width of the cross section of the drainage core board piece 1. Because the infiltration ports of the drainage channel 3 are all facing the long side of the connecting shoe 4, only the two sides are The infiltration port faces the broad side direction of the communication shoe 4, then through the setting of the gap between the width and length of the communication shoe 4 and the drainage core plate 1, the water in the drainage channel can be collected downward to the communication shoe and make the water between the drainage channels circulate quickly, and the drainage efficiency is greatly improved.

When the device is working, due to the structure of the bottom of the connecting shoe 4 being sealed and the top being open, a water storage area can be formed at the bottom of the drainage core plate 1; The water in the water area can be discharged upward through the drainage channel 3 with lower resistance along the way; therefore, when some drainage channels 3 are blocked and cannot be drained upward, the water in these drainage channels 3 can flow downward into the connecting shoe 4 , and then flow out to the surface from other drainage channels 3 that are not blocked, thereby enhancing the drainage capacity of the drainage core panel 1 .

The drainage core plate 1 includes a base plate 11 and a support plate 12. The support plates 12 are fixed on both sides of the base plate 11 and are arranged in sequence along the length direction of the base plate 11; the support plates 12 located on both sides of the base plate 11 are symmetrically distributed, and the support plates 12 and the base plate 11 are distributed vertically; the adjacent support plates 12 and the base plate 11 form a "凵"-shaped drainage channel 3, and only the drainage channels 3 on both sides are L-shaped openings, and the openings are all towards the filter membrane 2 In this way, the water from passing through the filter membrane 2 can penetrate into the drainage channel 3 smoothly.

After a certain period of drainage work, the fine particles in the soft soil will inevitably penetrate the filter membrane 2 into the drainage core board 1, and gradually accumulate on the drainage core board 1, causing some drainage channels to be blocked and unable to drain upwards. ; Through the drainage plate device of this design, the water in these drainage channels 3 can be collected downward into the connecting plate shoe 4, and then the drainage channel 3 that has never been blocked is discharged upward, thereby enhancing the drainage of the drainage core plate 1. ability to ensure the long-term effectiveness of the drainage process.

The present utility model is not limited to the above-mentioned embodiments, and no matter what changes are made in its shape or material composition, any structural design provided by the present utility model is a deformation of the present utility model, and should be considered in the present utility model. within the scope of protection.

Claims (7)

1. A drainage board device for pre-pressurized drainage of soft ground, comprising a drainage core plate (1) and a filter membrane (2), characterized in that: the cross-section of the drainage core plate (1) is a grid A grid-shaped section is formed, and a plurality of vertical drainage channels (3) are formed; the bottom of the drainage core plate (1) is sleeved with a communication shoe (4), and the surrounding of the communication shoe (4) is connected to the A plurality of the drainage channels (3) are in communication; the filter membrane (2) is wrapped around the drainage core plate member (1) and around and at the bottom of the communication shoe (4), and a plurality of the drainage channels The channels (3) are all communicated with the filter membrane (2). 2. The drainage board device for pre-pressurized drainage of soft ground according to claim 1, wherein the connecting shoe (4) is a PVC container with a sealed bottom and an open top, and the connecting shoe (4) is a PVC container with a sealed bottom and an open top. The cross-sectional area of (4) is larger than the cross-sectional area of the drainage core panel (1). 3. The drainage plate device for pre-pressurized drainage of soft soil foundation according to claim 2, characterized in that: the height of the connecting shoe (4) is 10 to 20 cm, and the length is longer than the drainage core plate (4). The cross-sectional length of 1) is 2 to 4 mm larger, and the width is 6 to 8 mm larger than the cross-sectional width of the drainage core panel (1). The drainage board device for pre-pressurized drainage of soft soil foundation according to claim 1, characterized in that: the drainage core board member (1) comprises a base plate (11) and a support board (12), the support board (12) The plates (12) are fixed on both sides of the base plate (11) and are arranged in sequence along the length direction of the base plate (11). 5 . The drainage plate device for pre-pressurized drainage of soft soil foundation according to claim 4 , wherein the support plates ( 12 ) located on both sides of the base plate ( 11 ) are symmetrically distributed, and the support plates (12) is vertically distributed with the substrate (11). 6. The drainage plate device for pre-pressurized drainage of soft ground according to claim 4 or 5, characterized in that: the adjacent support plates (12) and the base plate (11) constitute the Drain channel (3). 7 . The drainage board device for pre-pressurized drainage of soft soil foundation according to claim 1 , wherein the material used for the manufacture of the drainage core board member ( 1 ) is PVC material. 8 .

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