CN211200345U - Drainage superposed pile for water-rich area - Google Patents

Abstract

A drainage stack pile for water-rich areas belongs to the technical field of construction. It includes a prefabricated pile, a water absorption device and post-cast concrete. The center of the prefabricated pile has a reserved hole for the pile body, and the solid part is provided with a water absorption hole. The main components of the water absorption device are a water suction pipe and a high-pressure pump. The utility model is mainly suitable for water-rich foundations. First, the prefabricated piles are driven into the soil by vibrating hammering and other methods, and then a water absorption device is used to form a negative pressure in the reserved holes of the pile body to absorb the moisture contained in the nearby soil. After that, the water absorption device is pulled out, and the concrete is poured after, and the construction of the pile is completed. The utility model has reasonable design, has the functions of drainage and pile foundation, has fast construction speed and good economic effect, and can effectively solve the drainage problem encountered in the construction of water-rich foundation.

Description

A drainage composite pile for water-rich areas

technical field

The utility model belongs to the technical field of construction, in particular to a drainage stack pile for water-rich areas.

Background technique

Water-rich foundation reinforcement is the most common foundation treatment problem in construction. In the process of water-rich foundation treatment, drainage equipment construction operations are essential. At present, during the construction of various forms of common plug-in equipment construction operating mechanisms, there are low work efficiency, unstable plug-in quality, high resistance to soil entry, complex structure, poor safety, reliability and versatility, and limited scope of application, etc. There are technical problems, and the existing equipment is complex in structure, high in cost, easy to be damaged, and the cost of replacement after damage is greatly increased.

During foundation construction, when the prefabricated piles are driven into the foundation soil layer, the soil in the foundation soil layer will be squeezed around, the soil structure around the piles will be damaged, the water pressure in the foundation soil layer will increase, and excess pores will be formed. Water pressure, if the construction area is an area with high water content and poor water permeability, it is easy to form a regressive excess pore water pressure. This excess pore water pressure aggravates the squeeze of the soil, easily causes the diameter of the pile body, and makes the pile body The side resistance is reduced, which affects the bearing strength. More seriously, it will cause the soil layer to bulge, causing the surrounding buildings to tilt or collapse.

Existing prefabricated concrete drainage piles are mainly composed of prefabricated permeable concrete pipes, prefabricated reinforced concrete cores and pile tips. The rigidity of the outer layer is insufficient, and it is easy to be squeezed by the soil layer to cause the diameter to shrink. In addition, this prefabricated concrete drainage pile only conducts drainage through prefabricated permeable concrete pipes, and the drainage effect is not ideal.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the utility model provides a drainage stacking pile for water-rich areas. The prefabricated pile body of the drainage stacking pile is provided with a circular truncated water absorption hole with a filter screen and activated carbon, and the inner pre-buried hole is provided with a circle around it. There is a vertical slot, and the suction pipe at the lower part of the suction device is provided with a suction hole to achieve the purpose of blocking soil, rapid drainage and stable structure.

The technical scheme adopted by the utility model is as follows:

A drainage composite pile for water-rich areas is mainly composed of a prefabricated pile, a water pumping device, and post-cast concrete; the prefabricated pile body of the prefabricated pile is a reinforced concrete structure, the upper part of the prefabricated pile body is cylindrical, and the lower part is Conical shape, there is a reserved hole for the pile body in the middle of the prefabricated pile. The main shape of the reserved hole in the pile body is the same as the shape of the prefabricated pile. It is hollow and is divided into an upper cylindrical shape and a lower conical shape. On the inner side of the pile body, the reserved hole of the pile body is provided with a card slot all around, and the card slot is a hollow vertical strip, which extends to the bottom end of the reserved hole of the pile body. Running through the side wall of the prefabricated column body, the water absorption device is a steel structure, and the ends are two cylindrical structures. The size of the upper column is consistent with the external dimensions of the prefabricated pile body, and the size of the lower column is consistent with the shape of the reserved hole in the pile body. The size is the same. Around the lower cylinder, there are bumps. The size of the bumps is consistent with the size, quantity and arrangement of the slots. The suction pipe is the upper hose and the lower steel pipe, which is arranged in the middle of the suction device. , the upper hose is connected to the high pressure pump, the length of the lower steel pipe is basically the same as the length of the reserved hole in the pile body, and several small holes are arranged around the lower steel pipe.

Further, the prefabricated pile body is provided with water absorption holes on the front, rear, left and right sides, and the water absorption hole is a circular truncated structure, the side in contact with the soil body is a small circle, and the side in contact with the reserved hole in the pile body is a large circle. , the water absorption holes are sequentially set with coarse sand filter screen, activated carbon and blocking net from the outside to the inside.

Further, the reserved holes of the pile body are provided with eight clamping grooves around the circumference, and the clamping grooves are evenly arranged on the circumference.

Further, two pre-embedded bolts are arranged on the upper part of the prefabricated pile body, and one reserved bolt hole is respectively arranged on the left and right sides of the upper cylinder for the water absorption device to be connected with the pre-embedded bolts.

Further, the size and number of the water absorption holes and the small holes on the lower steel pipe are determined according to the geological conditions of the place.

The beneficial effects of the present utility model:

1. The prefabricated column of the present utility model is provided with water absorption holes all around, and the water absorption holes are of circular truncated structure. Coarse sand filter nets, activated carbon and blocking nets are arranged in sequence from the outside to the inside, so as to effectively absorb water and isolate the soil body.

2. The pre-embedded hole of the pile body of the utility model is provided with a clamping slot all around, and the water absorption device and the pre-embedded hole are inserted through the clamping slot, the position is fixed, and it is not easy to move. .

3. The suction pipe at the lower part of the water suction device of the present invention is provided with a suction hole. Compared with a suction pipe without a suction hole, the suction pipe can only absorb water from the bottom, which can reduce the horsepower of the suction pump and save energy.

4. The effects and advantages of the utility model are that the design is reasonable, the bearing capacity is relatively high, and it has the functions of drainage and pile foundation, the construction speed is fast, the economic effect is good, and the drainage problem encountered in the construction of the water-rich foundation can be effectively solved.

Description of drawings

Figure 1 is a front view of a prefabricated pile;

Figure 2 is a top view of a prefabricated pile;

Figure 3 is a schematic diagram of the internal structure of the prefabricated pile;

Fig. 4 is the structural representation of the water pumping device;

Fig. 5 is the structural representation of water absorption hole;

Fig. 6 is the construction schematic diagram of the utility model;

Figure 7 is a schematic diagram of the structure of the pile after construction is completed.

In the figure, 1 is a prefabricated pile, 1-1 is a prefabricated pile body, 1-2 is a pre-embedded hole in the pile body, 1-3 is a pre-embedded bolt, 1-4 is a slot, 1-5 is a water absorption hole, and 1-5 -1 is the coarse sand filter screen, 1-5-2 is the activated carbon, 1-5-3 is the blocking net, 2 is the water absorption device, 2-1 is the upper cylinder, 2-2 is the lower cylinder, 2-3 is the suction pipe, 2-3-1 is the upper hose, 2-3-2 is the lower steel pipe, 2-4 is the bump, 2-5 is the reserved bolt hole, 2-6 is the high pressure pump, 3 is the post-cast concrete, and 4 is the Soil.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

Example:

As shown in FIG. 6 , the present invention provides a drainage composite pile for water-rich areas, which is mainly composed of a prefabricated pile 1 , a water pumping device 2 , and a post-cast concrete 3 .

As shown in Figure 1, Figure 2, Figure 3, Figure 5, the prefabricated pile body 1-1 of the prefabricated pile 1 is a reinforced concrete structure, the upper part of the prefabricated pile body 1-1 is cylindrical, and the lower part is a conical shape. The center of the pile 1 is provided with a pile body reserved hole 1-2, the main body shape of the pile body reserved hole 1-2 is the same as the shape of the prefabricated pile 1, it is hollow, and it is divided into an upper cylindrical shape and a lower conical shape. On the upper part of the prefabricated pile body 1-1, two pre-embedded bolts 1-3 are arranged, and on the inner side of the prefabricated pile body 1-1, that is, where it contacts the reserved hole 1-2 of the pile body, there are eight prefabricated bolts 1-3. Card slot 1-4, the card slot 1-4 is a hollow vertical bar, which extends to the bottom end of the reserved hole 1-2 in the pile body. The eight card slots 1-4 are evenly arranged on the circumference. On the side wall of 1-1, water absorption holes 1-5 are arranged on the front, rear, left and right sides. The water absorption holes 1-5 penetrate the side wall of the prefabricated column body 1-1. The side in contact with the body 4 is a small circle, the side in contact with the reserved holes 1-2 of the pile body is a large circle, and the water absorption holes 1-5 are sequentially provided with a coarse sand filter 1-5-1 and an activated carbon 1-5 from the outside to the inside. -2 and block 1-5-3.

As shown in Figure 4, the water absorption device 2 is a steel structure, and the ends are two cylindrical structures. Consistent with the external dimensions of the reserved holes 1-2 in the pile body, there are bumps 2-4 around the lower cylinder 2-2. The size of the bumps 2-4 is the same as the size, quantity and arrangement of the card slots 1-4. On the left and right sides of the upper cylinder 2-1, a reserved bolt hole 2-5 is respectively arranged for connection with the embedded bolt 1-3, and the suction pipe 2-3 is the upper hose 2- 3-1, the structure of the lower steel pipe 2-3-2 is arranged in the middle of the water suction device 2, the upper hose 2-3-1 is connected with the high pressure pump 2-6, and the length of the lower steel pipe 2-3-2 is the same as the pile The lengths of the reserved holes 1-2 are basically the same, and several small holes are arranged around the lower steel pipe 2-3-2.

The size and quantity of the small holes on the water absorption holes 1-5 and the lower steel pipe 2-3-2 are determined according to the geological conditions of the place.

The construction method of the utility model is as follows: driving the prefabricated prefabricated pile 1 into the soil body 4 where it is located by vibrating hammering and other methods, and then installing the water pumping device 2, so that the bumps 2-4 are inserted into the clamping grooves 1-4, so that the The pre-embedded bolts 1-3 are inserted into the reserved bolt holes 2-5, tightened with bolts, and the high-pressure pump 2-6 is started to form a negative pressure in the reserved holes of the pile body, and the water in the soil body 4 passes through the water suction holes 1-5 Enter into the reserved holes 1-2 of the pile body. When the water content in the surrounding soil 4 reaches a certain standard, turn off the high-pressure pump 2-6, pull out the pumping device 2, and suck out the water in the reserved holes 1-2 of the pile body. , pour concrete 3 after pouring, and ensure that the post-poured concrete 3 is filled with the slot 4 to form a better occlusion, and the construction is completed, as shown in Figure 7.

Claims (5)

1. A drainage composite pile for water-rich areas, characterized in that: it is mainly composed of a prefabricated pile (1), a water absorption device (2), and a post-cast concrete (3); the prefabricated pile of the prefabricated pile (1) The body (1-1) is of reinforced concrete structure, the upper part of the prefabricated pile body (1-1) is cylindrical, and the lower part is conical shape, and the prefabricated pile (1) is provided with a reserved hole (1-2) in the middle of the pile body , The main body shape of the reserved hole (1-2) in the pile body is the same as that of the prefabricated pile (1), which is hollow, and is divided into the upper cylindrical shape and the lower conical shape. , the reserved hole (1-2) of the pile body is provided with a card slot (1-4) all around, and the card groove (1-4) is a hollow vertical bar, which extends to the end of the reserved hole (1-2) of the pile body. At the bottom end, a water absorption hole (1-5) is provided on the side wall of the prefabricated pile body (1-1), and the water absorption hole (1-5) penetrates the side wall of the prefabricated column body (1-1). (2) It is a steel structure with two cylindrical structures at the ends. The size of the upper cylinder (2-1) is the same as that of the prefabricated pile body (1-1), and the size of the lower cylinder (2-2) is the same as that of the pile. The external dimensions of the reserved holes (1-2) are the same, and there are bumps (2-4) around the lower cylinder (2-2). The bumps (2-4) are of the same size as the slots (1- 4) The size, quantity and arrangement are consistent, the cylindrical structure at the end of the water suction device (2) has a suction pipe (2-3) running through it, and the suction pipe (2-3) is the upper hose (2-3). -1), the structure of the lower steel pipe (2-3-2), arranged in the middle of the water suction device (2), the upper hose (2-3-1) is connected to the high pressure pump (2-6), the lower steel pipe ( The length of 2-3-2) is basically the same as the length of the reserved hole (1-2) in the pile body, and several small holes are arranged around the lower steel pipe (2-3-2). 2. A drainage stack pile for water-rich areas according to claim 1, characterized in that: the prefabricated pile body (1-1) is provided with water absorption holes (1-5) at the front, rear, left and right sides, and the prefabricated pile body (1-1) is provided with water absorption holes (1-5). The water absorption hole (1-5) is a circular truncated structure, the side in contact with the soil body (4) is a small circle, and the side in contact with the reserved hole (1-2) of the pile body is a large circle. 5) Set the coarse sand filter screen (1-5-1), activated carbon (1-5-2) and blocking net (1-5-3) in order from the outside to the inside. 3. A drainage stack pile for water-rich areas according to claim 1, characterized in that: the reserved holes (1-2) of the pile body are provided with eight clamping grooves (1-4) in a circle. The grooves (1-4) are evenly arranged on the circumference. 4. A drainage composite pile for water-rich areas according to claim 1, characterized in that: the upper part of the prefabricated pile body (1-1) is provided with two embedded bolts (1-3) , the water absorbing device (2) is respectively provided with a reserved bolt hole (2-5) on the left and right sides of the upper cylinder (2-1) for connecting with the embedded bolt (1-3). 5. A drainage stack pile for water-rich areas according to claim 1, characterized in that: the size of the water absorption hole (1-5) and the small hole on the lower steel pipe (2-3-2) and The quantity depends on the geological conditions of the place.

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