Construction equipment for soft foundation replacement and filling and use method

Abstract

The invention relates to the field of soft foundation construction, in particular to construction equipment for soft foundation replacement and filling, which comprises a bearing moving frame, an electric rotating base, a connecting rod, a connecting seat and the like, a plurality of electric rotating bases are connected to the bearing moving frame in a sliding manner; rotating parts of all the electric rotating bases are fixedly connected with connecting rods; and the opposite sides of all the connecting rods are fixedly connected with connecting seats. The soil around the hollow pipe is pushed through the expanded directional air bag, a cavity is formed between the hole and the hollow pipe in the area where the expanded directional air bag moves, a pipeline for conveying concrete is placed between the extrusion base and the soil, the concrete is conveyed into the cavity between the hole and the hollow pipe through the pipeline, and then the concrete is conveyed into the soil through the pipeline. And after the concrete conveyed into the cavity is solidified, a protective layer is formed between the hole and the hollow pipe, and the inner wall of the hole is supported by the protective layer, so that the subsequent piling operation is prevented from being influenced by shrinkage of the hole.

Description

Technical Field

[0001] The invention relates to the field of soft foundation construction, and in particular to a construction device and a use method for soft foundation replacement. Background Art

[0002] When constructing soft foundation, before piling operation is carried out in the soft foundation area, it is necessary to carry out pre-drilling treatment in the soft foundation area to facilitate the subsequent piling operation. After the pre-drilling treatment is completed, the holes drilled by the pre-drilling treatment are distributed in the soft foundation area in a matrix manner. The area of ​​the soft foundation area is large, and the number of holes drilled by the pre-drilling treatment is large. During the piling operation, due to the soft soil in the soft foundation area, the holes will shrink, affecting the subsequent piling operation. Summary of the invention

[0003] In order to overcome the disadvantage that the soil in the soft foundation area is soft and the holes may shrink, which affects the subsequent piling operation, the present invention provides a construction device for soft foundation replacement and a use method.

[0004] The technical implementation scheme of the present invention is: a construction equipment for soft foundation replacement, including a load-bearing mobile frame and an electric rotating base; a plurality of electric rotating bases are slidably connected to the load-bearing mobile frame; it also includes connecting rods, extrusion bases, connecting seats and hollow tubes; all rotating parts of the electric rotating bases are fixedly connected to connecting rods; all opposite sides of the connecting rods are fixedly connected to connecting seats; all connecting seats are commonly fixedly connected to the extrusion base; a hollow tube is fixedly connected to the extrusion base, and the hollow tube passes through the extrusion base.

[0005] More preferably, it further comprises a multi-stage telescopic rod and a ball; the multi-stage telescopic rod is fixedly connected to the load-bearing movable frame; the telescopic part of the multi-stage telescopic rod is fixedly connected to the ball, and the ball contacts the bottom of the hollow tube.

[0006] More preferably, a chamfer I is provided at the bottom of the hollow tube.

[0007] More preferably, it further comprises a directional airbag and a trachea; a plurality of placement slots are provided on the hollow tube; all the placement slots are provided with directional airbags; a plurality of tracheas are provided on the hollow tube, and the tracheas are connected with the directional airbags.

[0008] More preferably, the extruded base is of a frustum design.

[0009] More preferably, a metal soft plate is also included; all directional airbags are provided with a plurality of metal soft plates.

[0010] More preferably, it further includes a delivery tube and a nozzle; a plurality of delivery tubes are arranged on the hollow tube; a plurality of nozzles are arranged on all directional airbags, and the delivery tubes penetrate the directional airbags and are connected with the nozzles.

[0011] More preferably, all the directional airbags are provided with a plurality of protrusions.

[0012] More preferably, all the protrusions are distributed alternately with the corresponding metal soft plates.

[0013] More preferably, a construction method for soft foundation replacement includes the following steps: Step 1: Move the present invention to the hole, let the hollow tube be located just above the hole, insert the hollow tube into the hole, and the connecting rod, the extrusion base, the connecting seat and the hollow tube move downward accordingly, and the hollow tube expands the shrinkage hole; Step 2: When the extrusion base contacts the hole, the extrusion base squeezes the hole, so that the soil at the top of the hole begins to be compacted, and the hole is stabilized; Step 3: Then control the multi-stage telescopic rod to contract and drive the ball to move upward, and the ball expands the hollow tube , so that the hole expands slightly again; Step 4: Control the electric rotating base to slide up and down on the load-bearing mobile frame, so that the area where the expanded directional airbag moves forms a cavity between the hole and the hollow tube; Step 5: Then control the external air pump to extract the gas in all directional airbags, so that all directional airbags return to their initial state; Step 6: Place the pipeline for conveying concrete between the extrusion base and the soil, and convey the concrete to the cavity between the hole and the hollow tube through the pipeline. After the concrete conveyed to the cavity solidifies, a protective layer is formed between the hole and the hollow tube.

[0014] Compared with the prior art, the present invention has the following advantages: the present invention inserts a hollow tube into the hole, and the hollow tube expands the shrunken hole. When the extrusion base contacts the hole, the extrusion base squeezes the hole, so that the soil on the top of the hole begins to be compacted, thereby stabilizing the hole.

[0015] The present invention is pushed out by a multi-stage telescopic rod, and the ball moves downward along with the hollow tube. The ball first contacts the hole, and the ball squeezes the hole, so that the hole expands slightly and is stabilized again.

[0016] The present invention drives the ball to move upward by contracting the multi-stage telescopic rod. At this time, the hollow tube is still located in the hole. The ball is pressed into the hollow tube, and the ball expands the hollow tube, so that the hole is slightly expanded again, and the hole is further stabilized.

[0017] The present invention pushes the soil around the hollow tube by an inflated directional airbag, and a cavity is formed between the hole and the hollow tube in the area where the inflated directional airbag moves. A pipe for conveying concrete is placed between the extrusion base and the soil, and concrete is conveyed to the cavity between the hole and the hollow tube through the pipe. After the concrete conveyed to the cavity solidifies, a protective layer is formed between the hole and the hollow tube. The inner wall of the hole is supported by the protective layer to prevent the shrinkage of the hole from affecting subsequent piling operations.

[0018] The present invention adds a metal soft plate to the directional airbag. When the directional airbag continues to expand, the metal soft plate pushes the soil around the hollow tube to expand the size of the partial area of ​​the cavity. After the concrete enters the expanded partial area, the concrete in the partial area forms additional support for the protective layer, thereby increasing the contact area between the protective layer and the soil and preventing the protective layer from sinking easily.

[0019] The present invention connects the delivery pipe with an external curing agent conveyor by adding a delivery pipe and a nozzle. When the directional airbag continues to expand, the external curing agent conveyor is started to convey the fixing agent into the delivery pipe. The curing agent is sprayed from the nozzle into a partial area of ​​the cavity expansion. The curing agent solidifies the partial area of ​​the cavity expansion, so that the partial area of ​​the cavity expansion can better support the protective layer, thereby reducing the possibility of the protective layer sinking.

[0020] The present invention adds convex points on the directional airbag. When the directional airbag continues to expand, the convex points move in the partial area of ​​the cavity expansion to form a slide groove, allowing the curing agent to flow in the partial area of ​​the cavity expansion, making the curing agent more evenly distributed, and improving the curing effect of the fixing agent on the partial area of ​​the cavity expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure disclosed by the construction equipment for soft foundation replacement of the present invention;

[0022] Figure 2 It is a schematic structural diagram of a multi-stage telescopic rod and a sphere disclosed in the construction equipment for soft foundation replacement of the present invention;

[0023] Figure 3 It is a schematic structural diagram of an extruded base and a hollow tube disclosed in the construction equipment for soft foundation replacement of the present invention;

[0024] Figure 4 A structural cross-sectional view of a hollow tube disclosed in the construction equipment for soft foundation replacement of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the directional air bag, air pipe, conveying pipe and placement groove disclosed by the construction equipment for soft foundation replacement of the present invention;

[0026] Figure 6 The present invention is a schematic structural diagram of a soft metal plate, a nozzle and protrusions disclosed in the construction equipment for soft foundation replacement.

[0027] The markings of the components in the accompanying drawings are as follows: 1-carrying mobile frame, 2-electric rotating base, 3-connecting rod, 4-extrusion base, 5-connecting seat, 6-hollow tube, 7-multi-stage telescopic rod, 8-ball, 101-directional airbag, 102-trachea, 103-metal soft plate, 104-delivery pipe, 105-nozzle, 61-chamfer, 62-placement groove, 1011-bump. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] A construction equipment for soft foundation replacement, such as Figure 1-Figure 5 As shown, it includes a load-bearing mobile frame 1 and an electric rotating base 2; the load-bearing mobile frame 1 is slidably connected to two electric rotating bases 2;

[0031] It also includes a connecting rod 3, an extrusion base 4, a connecting seat 5 and a hollow tube 6; all rotating parts of the electric rotating base 2 are fixedly connected to the connecting rod 3; all opposite sides of the connecting rods 3 are fixedly connected to the connecting seat 5; all the connecting seats 5 are commonly fixedly connected to the extrusion base 4; a hollow tube 6 is fixedly connected to the extrusion base 4, the hollow tube 6 can be deformed, and the hollow tube 6 penetrates the extrusion base 4.

[0032] It also includes a multi-stage telescopic rod 7 and a ball 8; the multi-stage telescopic rod 7 is fixedly connected to the load-bearing movable frame 1; the telescopic part of the multi-stage telescopic rod 7 is fixedly connected to the ball 8, and the ball 8 is in contact with the bottom of the hollow tube 6.

[0033] The bottom of the hollow tube 6 is provided with a chamfer 61I so that the ball 8 fits tightly against the hollow tube 6 .

[0034] It also includes a directional airbag 101 and an air tube 102; the hollow tube 6 is provided with eight placement grooves 62 which are staggered from top to bottom; all the placement grooves 62 are provided with directional airbags 101; the hollow tube 6 is provided with two air tubes 102, and the air tubes 102 are connected to the directional airbags 101.

[0035] The extrusion base 4 is of a frustum design, which facilitates the concrete to flow into the cavity between the hole and the hollow tube 6 .

[0036] When constructing soft foundation, before piling operation is carried out in the soft foundation area, it is necessary to carry out pre-drilling treatment in the soft foundation area to facilitate the subsequent piling operation. After the pre-drilling treatment is completed, the holes drilled by the pre-drilling treatment are distributed in the soft foundation area in a matrix manner. The area of ​​the soft foundation area is large, and the number of holes drilled by the pre-drilling treatment is large. During the piling operation, due to the soft soil in the soft foundation area, the holes will shrink, affecting the subsequent piling operation.

[0037] In order to avoid affecting the subsequent piling operation, when carrying out the piling operation, it is necessary to fill the hole drilled by the pre-drilling process with concrete. Since the hole drilled by the pre-drilling process has a shrinkage cavity, after the concrete is filled into the shrinkage cavity, the support column formed by the concrete in the hole, the middle part of the formed support column will be depressed, the diameter of the middle part of the support column is smaller than the upper and lower parts of the support column, the bearing capacity of the support column is affected, and the support column cannot effectively support. Before filling the hole drilled by the pre-drilling process with concrete, the present invention is moved to the hole. At this time, the hollow tube 6 is located directly above the hole, and the electric rotating base 2 is controlled to slide downward on the load-bearing mobile frame 1, and the connecting rod 3, the extrusion base 4, the connecting seat 5 and the hollow tube 6 follow and move downward. When the hollow tube 6 moves downward, the hollow tube 6 is inserted into the hole, and the hollow tube 6 opens the shrinkage cavity. When the extrusion base 4 contacts the hole, the extrusion base 4 squeezes the hole, so that the soil at the top of the hole begins to be compacted, and the hole is stabilized.

[0038] By adding a multi-stage telescopic rod 7 to the load-bearing mobile frame 1, and adding a ball 8 to the telescopic part of the multi-stage telescopic rod 7, when the hollow tube 6 moves downward and is inserted into the hole, the multi-stage telescopic rod 7 is pushed out, and the ball 8 moves downward with the hollow tube 6. The ball 8 first contacts the hole, and the ball 8 squeezes the hole, and the hole expands slightly, and the hole is stabilized again. After the top surface of the extrusion base 4 is flush with the soil surface, the hollow tube 6 stops moving downward, and the multi-stage telescopic rod 7 contracts to drive the ball 8 to move upward. At this time, the hollow tube 6 is still in the hole, and the ball 8 is pressed into the hollow tube 6. The ball 8 opens the hollow tube 6, so that the hole expands slightly again, and the hole is further stabilized.

[0039] In order to prevent the shrinkage of the hole from affecting the subsequent piling operation, a protective layer is added at the hole, and the inner wall of the hole is supported by the protective layer to prevent the shrinkage of the hole from affecting the subsequent piling operation. After the hole is stabilized, the hollow tube 6 is inserted into the soil, and the top surface of the extrusion base 4 is flush with the soil surface. The external air pump is connected to the air pipe 102, and the external air pump is started to transport gas into the air pipe 102. The gas is transported to the directional airbag 101, and the directional airbag 101 expands toward the periphery of the hollow tube 6. The expanded directional airbag 101 pushes the soil around the hollow tube 6, and the soil around the hollow tube 6 is squeezed again. Then the electric rotating base 2 is controlled to slide upward on the load-bearing mobile frame 1, and the corresponding parts and the expanded directional airbag 101 follow the upward movement. When the expanded directional airbag 101 moves upward, the expanded directional airbag 101 pushes the hollow tube 6. The surrounding soil is pushed. When the hollow tube 6 loses contact with the soil, the electric rotating base 2 is controlled to slide downward on the carrying mobile frame 1 again, and the hollow tube 6 enters the hole again. In the process of the expanded directional airbag 101 following the hollow tube 6 to move up and down, the area where the expanded directional airbag 101 moves forms a cavity between the hole and the hollow tube 6. Then the external air pump is controlled to extract the gas in all the directional airbags 101, so that all the directional airbags 101 are restored to their initial state. At this time, the extrusion base 4 is not in contact with the soil, and the pipeline for conveying concrete is placed between the extrusion base 4 and the soil. The concrete is conveyed to the cavity between the hole and the hollow tube 6 through the pipeline. After the concrete conveyed to the cavity solidifies, a protective layer is formed between the hole and the hollow tube 6. The inner wall of the hole is supported by this protective layer to prevent the shrinkage of the hole from affecting the subsequent piling operation.

[0040] Example 2

[0041] On the basis of Example 1, Figure 4-Figure 6 As shown, a metal soft plate 103 is also included; three metal soft plates 103 are provided on all directional airbags 101 .

[0042] It also includes a delivery tube 104 and a nozzle 105 ; two delivery tubes 104 are provided on the hollow tube 6 ; all directional airbags 101 are provided with a plurality of nozzles 105 , and the delivery tube 104 passes through the directional airbag 101 and is connected with the nozzle 105 .

[0043] All directional airbags 101 are provided with a plurality of protrusions 1011 to allow the curing agent to flow better in the cavity.

[0044] All the protrusions 1011 and the corresponding metal soft plates 103 are staggeredly distributed, thereby increasing the distribution range of the slide grooves formed by the movement of the protrusions 1011 .

[0045] A construction method for soft foundation replacement includes the following steps:

[0046] Step 1: Move the present invention to the hole, place the hollow tube 6 just above the hole, insert the hollow tube 6 into the hole, and move the connecting rod 3, the extrusion base 4, the connecting seat 5 and the hollow tube 6 downward accordingly, so that the hollow tube 6 expands the shrinkage hole;

[0047] Step 2: When the extrusion base 4 contacts the hole, the extrusion base 4 squeezes the hole so that the soil at the top of the hole begins to be compacted, thereby stabilizing the hole;

[0048] Step 3: Then control the multi-stage telescopic rod 7 to contract and drive the ball 8 to move upward, and the ball 8 opens the hollow tube 6, so that the hole expands slightly again;

[0049] Step 4: Control the electric rotating base 2 to slide up and down on the carrying mobile frame 1, so that the area where the expanded directional airbag 101 moves forms a cavity between the hole and the hollow tube 6;

[0050] Step 5: Then, the external air pump is controlled to extract the gas in all directional airbags 101, so that all directional airbags 101 return to their initial state;

[0051] Step six: Place the pipe for conveying concrete between the extrusion base 4 and the soil, and convey the concrete to the cavity between the hole and the hollow tube 6 through the pipe. After the concrete conveyed to the cavity solidifies, a protective layer is formed between the hole and the hollow tube 6.

[0052] Considering that the protective layer is composed of concrete, the protective layer itself has a large weight, and the protective layer is located in the pre-drilled hole of the soft foundation, the protective layer will sink. After the protective layer sinks, the protective layer cannot continue to support the area of ​​the hole that needs support. Before building the protective layer, when the expanded directional airbag 101 pushes the soil around the hollow tube 6 to form a cavity, the hollow tube 6 is located in the hole at this time, and the air pump is controlled to continue to transport gas into the expanded directional airbag 101 to make the expanded directional airbag 101 continue to expand. When the directional airbag 101 continues to expand, considering that the driving force generated by the expansion of the directional airbag 101 is effective, it is impossible to effectively push the soil around the hollow tube 6. By adding a metal soft plate 103 to the directional airbag 101, when the directional airbag 101 continues to expand, the metal soft plate 103 is used to push the soil around the hollow tube 6, so that the size of the partial area of ​​the cavity is expanded. After the concrete enters the expanded partial area, the concrete in this partial area forms additional support for the protective layer, so that the contact area between the protective layer and the soil is increased, so that the protective layer is not easy to sink.

[0053] By adding a delivery pipe 104 and a nozzle 105, the delivery pipe 104 is connected to an external curing agent conveyor. When the directional airbag 101 continues to expand, the external curing agent conveyor is started to deliver the fixing agent to the delivery pipe 104. The fixing agent is sprayed from the nozzle 105 to the partial area of ​​the cavity expansion. The fixing agent solidifies the partial area of ​​the cavity expansion, so that the partial area of ​​the cavity expansion can better support the protective layer and reduce the possibility of the protective layer sinking. By adding a protrusion 1011 to the directional airbag 101, when the directional airbag 101 continues to expand, the protrusion 1011 moves in the partial area of ​​the cavity expansion to form a slide groove, so that the fixing agent can flow in the partial area of ​​the cavity expansion, so that the curing agent is more evenly distributed, thereby improving the curing effect of the fixing agent on the partial area of ​​the cavity expansion.

[0054] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. A construction device for replacing soft foundation, comprising a load-bearing mobile frame (1) and an electric rotating base (2); a plurality of electric rotating bases (2) are slidably connected to the load-bearing mobile frame (1); wherein: It also includes a connecting rod (3), an extrusion base (4), a connecting seat (5) and a hollow tube (6); the rotating parts of all the electric rotating bases (2) are fixedly connected to the connecting rod (3); the opposite sides of all the connecting rods (3) are fixedly connected to the connecting seat (5); all the connecting seats (5) are commonly fixedly connected to the extrusion base (4); the extrusion base (4) is fixedly connected to the hollow tube (6), and the hollow tube (6) penetrates the extrusion base (4).

2. A construction equipment for soft foundation replacement according to claim 1, characterized in that: It also comprises a multi-stage telescopic rod (7) and a sphere (8); the multi-stage telescopic rod (7) is fixedly connected to the load-bearing movable frame (1); the sphere (8) is fixedly connected to the telescopic part of the multi-stage telescopic rod (7), and the sphere (8) is in contact with the bottom of the hollow tube (6).

3. A construction equipment for soft foundation replacement according to claim 2, characterized in that: The bottom of the hollow tube (6) is provided with a chamfer (61) Ⅰ.

4. A construction equipment for soft foundation replacement according to any one of claims 2 to 3, characterized in that: It also includes a directional airbag (101) and an air tube (102); a plurality of placement grooves (62) are provided on the hollow tube (6); all the placement grooves (62) are provided with a directional airbag (101); a plurality of air tubes (102) are provided on the hollow tube (6), and the air tubes (102) are communicated with the directional airbag (101).

5. A construction equipment for soft foundation replacement according to claim 4, characterized in that: The extruded base (4) is of a frustum design.

6. A construction equipment for soft foundation replacement according to claim 4, characterized in that: It also includes a metal soft plate (103); all directional airbags (101) are provided with a plurality of metal soft plates (103).

7. A construction equipment for soft foundation replacement according to claim 6, characterized in that: It also includes a delivery tube (104) and a nozzle (105); a plurality of delivery tubes (104) are arranged on the hollow tube (6); a plurality of nozzles (105) are arranged on all directional airbags (101), and the delivery tubes (104) penetrate the directional airbags (101) and are connected with the nozzles (105).

8. A construction equipment for soft foundation replacement according to claim 7, characterized in that: All the directional airbags (101) are provided with a plurality of convex points (1011).

9. A construction equipment for soft foundation replacement according to claim 8, characterized in that: All the protrusions (1011) are distributed alternately with the corresponding metal soft plates (103).

10. A construction equipment for soft foundation replacement according to claims 1-9, characterized in that: A construction method for replacing soft foundation, comprising the following steps: step 1: moving the present invention to a hole, allowing a hollow tube (6) to be located directly above the hole, inserting the hollow tube (6) into the hole, and moving the connecting rod (3), the extrusion base (4), the connecting seat (5) and the hollow tube (6) downward accordingly, so that the hollow tube (6) expands the shrinkage hole; step 2: when the extrusion base (4) contacts the hole, the extrusion base (4) squeezes the hole, so that the soil at the top of the hole begins to be compacted, and the hole is stabilized; step 3: then controlling the multi-stage telescopic rod (7) to contract and drive the ball (8) to move upward, so that the ball (8) expands the hollow tube (6), The hole is slightly expanded again; Step 4: Control the electric rotating base (2) to slide up and down on the load-bearing mobile frame (1), so that the area where the expanded directional airbag (101) moves forms a cavity between the hole and the hollow tube (6); Step 5: Then control the external air pump to extract the gas in all directional airbags (101), so that all directional airbags (101) return to their initial state; Step 6: Place the pipeline for conveying concrete between the extrusion base (4) and the soil, and convey the concrete to the cavity between the hole and the hollow tube (6) through the pipeline. After the concrete conveyed to the cavity solidifies, a protective layer is formed between the hole and the hollow tube (6).

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