Solidified soil assembly type pretreatment system for construction site and working method of solidified soil assembly type pretreatment system

Abstract

The invention discloses a solidified soil assembly type pretreatment system for a construction site and a working method thereof.The pretreatment system comprises an enclosure system, a drainage system and a hoisting system, an enclosure wall is formed by splicing a plurality of prefabricated concrete sheet piles, and guide strips are vertically arranged on the prefabricated concrete sheet piles along the inner sides of the prefabricated concrete sheet piles; the drainage system comprises a waterproof layer, a bottom plate, permeable pipes and a water collecting well, guide grooves matched with the guide strips are formed in the two adjacent sides of prefabricated bottom plate assemblies of the bottom plate, 1 / 4 circles of the four prefabricated bottom plate assemblies form a circle and are used for containing the water collecting well, and a plurality of mounting grooves used for mounting the permeable pipes are formed in the top faces of the prefabricated bottom plate assemblies. A square-table-shaped positioning groove is formed in the bottom of the prefabricated bottom plate assembly, and a positioning block matched with the positioning groove is arranged on the top of the waterproof layer. The system has the advantages that the enclosure system and the drainage system are both of a prefabricated structure, a pretreatment system can be rapidly built on a construction site, and therefore the construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of solidified soil treatment, and in particular to an assembled solidified soil pretreatment system for a construction site and a working method thereof. Background Art

[0002] In construction, it is crucial to pre-treat the solidified soil before preparation. This involves adjusting the soil moisture content and adding admixtures and raw materials. Currently, there are two main treatment methods: 1. Transporting to a centralized mixing station outside the construction site for processing: Although this method can ensure the processing quality to a certain extent, the transportation cost is extremely high. The long-distance transportation of large amounts of earthwork not only consumes a large number of transportation vehicle resources, but also incurs high fuel costs and vehicle loss costs, which greatly increases the construction cost; 2. Building a mixing station at the construction site: Although this method can save transportation costs, it faces many environmental challenges. For example, mud overflow will pollute the construction site and the surrounding environment, causing adverse effects on soil and water bodies; dust problems will worsen air quality and endanger the health of construction workers and surrounding residents. In addition, the cost of building a mixing station on site is also high, including site leveling, infrastructure construction, equipment purchase and installation, etc., which places high demands on the construction party's capital investment. Summary of the Invention

[0003] The purpose of the present invention is to provide a solidified soil assembled pretreatment system for construction sites and a working method thereof based on the above-mentioned deficiencies in the prior art. The pretreatment system consists of a retaining system, a drainage system and a lifting system. The retaining system and the drainage system both adopt prefabricated structures, which can realize the rapid construction of the pretreatment system at the construction site, thereby improving construction efficiency. In addition, the working method is simple to operate and can realize the rapid processing of earthwork.

[0004] The purpose of the present invention is achieved by the following technical solutions: A solidified soil assembled pretreatment system for construction sites, the pretreatment system comprising a retaining system, a drainage system and a lifting system, the retaining system being a square retaining wall assembled from a plurality of precast concrete sheet piles, the precast concrete sheet piles being provided with guide strips vertically along their inner sides, the drainage system comprising a waterproof layer, a base plate, a permeable pipe and a water collection well, the base plate being composed of four square precast base plate assemblies, guide grooves cooperating with the guide strips being provided on adjacent two sides of the precast base plate assemblies, one corner of the precast base plate assembly being 1 / 4 circular, the 1 / 4 circles of the four precast base plate assemblies forming a circle and being used to place the water collection well, the top surface of the precast base plate assembly being provided with a plurality of installation grooves for installing the permeable pipes, the permeable pipes being connected to the water collection well, a square table-shaped positioning groove being provided at the bottom of the precast base plate assembly, and a positioning block cooperating with the positioning groove being provided on the top of the waterproof layer.

[0005] The lifting system includes four vertical beams, two transverse beams, two longitudinal beams and four hydraulic telescopic rods. The four vertical beams are respectively arranged on the outside of the four corners of the retaining wall, the two transverse beams are arranged opposite to each other, and the two longitudinal beams are arranged opposite to each other. The four vertical beams are divided into two groups. Each group of vertical beams includes two vertical beams arranged in the longitudinal direction. The two ends of each longitudinal beam are movably connected to the two vertical beams of the corresponding group of vertical beams, and the longitudinal beams move along the vertical direction of the vertical beams. The two ends of the transverse beams are movably connected to the two longitudinal beams, and the transverse beams move along the longitudinal direction of the longitudinal beams. The four hydraulic telescopic rods are divided into two groups. Each group of hydraulic telescopic rods includes two hydraulic telescopic rods installed at the two ends of the corresponding transverse beams, and the hydraulic telescopic rods move along the transverse direction of the transverse beams.

[0006] The pretreatment system also includes a grab bucket, a grouting device, an agitator and a pressure plate. The grab bucket, the grouting device, the agitator and the pressure plate can be connected to the hydraulic telescopic rod respectively. Guide grooves that match the guide strips are provided on adjacent two sides of the pressure plate. One corner of the pressure plate is 1 / 4 circle, and the size and shape of the 1 / 4 circle of the pressure plate are respectively matched with the size and shape of the water collection well.

[0007] The top surface of the prefabricated floor assembly is divided into a first slope surface and a second slope surface with its diagonal line as the boundary, and a drainage slope surface is formed between the first slope surface of one prefabricated floor assembly and the second slope surface of another adjacent prefabricated floor assembly.

[0008] The mounting groove is divided into a transverse mounting groove, a longitudinal mounting groove and an oblique mounting groove, and the transverse mounting groove, the longitudinal mounting groove and the oblique mounting groove are connected to each other.

[0009] The precast concrete sheet piles are connected via a concave-convex structure.

[0010] A working method of a solidified soil assembly pretreatment system for a construction site, the working method comprising the following steps: S1: Use a pressing device to press the precast concrete sheet piles into the soil to form a retaining wall; S2: construct a waterproof layer at the bottom of the foundation pit; S3: Using a hoisting device to hoist the prefabricated floor assembly into the foundation pit, and cooperating the prefabricated floor assembly with the prefabricated concrete sheet piles and the waterproof layer to form a floor; S4: Install permeable pipes and water collection wells to form a treatment pool; S5: Installing a grab bucket on the lifting system, using the grab bucket to grab the soil transported by the transport vehicle and transfer it to the treatment pool; S6: Installing a pressure plate on the lifting system and using the pressure plate to drain the earth; S7: installing a grouting device and a stirrer on the lifting system, performing grouting using the grouting device and stirring using the stirrer to obtain solidified soil; S8: Install the grab bucket on the lifting system, and use the grab bucket to grab the solidified soil and transfer it to the transport vehicle.

[0011] The advantages of the present invention are that both the enclosure system and the drainage system adopt prefabricated structures, which can realize the rapid construction of the pretreatment system at the construction site, thereby improving construction efficiency; the operation is simple, and the earthwork can be quickly processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the structure of the pretreatment system of the present invention; Figure 2 is a plan view of the treatment pool of the present invention; Figure 3 is an elevation view of the treatment pool of the present invention; Figure 4 A schematic plan view of a prefabricated base plate assembly according to the present invention; Figure 5 A simplified schematic diagram of a prefabricated floor assembly of the present invention; Figure 6 It is a planar schematic diagram of the pressing plate of the present invention; like Figures 1 to 6 As shown, the marks in the figure represent: Precast concrete sheet piles 10, guide strips 101, protrusions 102, grooves 103, waterproof layers 20, positioning blocks 201, water collection wells 30, precast base plate components 40, guide grooves 401, mounting grooves 402, transverse mounting grooves 4021, longitudinal mounting grooves 4022, oblique mounting grooves 4023, positioning grooves 403, first slopes 404, second slopes 405, vertical beams 50, transverse beams 60, longitudinal beams 70, hydraulic telescopic rods 80, pressure plates 90, and guide grooves 901. DETAILED DESCRIPTION

[0013] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art: Example: Figures 1 to 6As shown, this embodiment relates to an assembled pretreatment system for solidified soil used at construction sites. The pretreatment system primarily includes a retaining wall, a drainage system, and a lifting system. The retaining wall and the drainage system form a treatment pool. The retaining wall is a square retaining wall assembled from a plurality of precast concrete sheet piles 10. The precast concrete sheet piles 10 are connected by a concave-convex structure. Specifically, there are two groups of concave-convex structures, each group including a trapezoidal protrusion 102 and a trapezoidal groove 103. The precast concrete sheet piles 10 are provided with guide bars 101 vertically along their inner sides. The drainage system includes a waterproof layer 20, a base plate, a permeable pipe, and a water collection well 30. The base plate is composed of four square precast base plate assemblies 40. Guide grooves 401 that mate with the guide bars 101 are formed on adjacent sides of the precast base plate assemblies 40. The cooperation between the guide bars 101 and the guide grooves 401 ensures the horizontal positioning of the precast base plate assemblies 40. One corner of the prefabricated base plate assembly 40 is 1 / 4 circular, and the 1 / 4 circular portions of the four prefabricated base plate assemblies 40 form a circle and are used to place the water collection well 30. The top surface of the prefabricated base plate assembly 40 is provided with a plurality of mounting grooves 402 for mounting water permeable pipes. The mounting grooves 402 are divided into a horizontal mounting groove 4021, a vertical mounting groove 4022, and an oblique mounting groove 4023. The horizontal mounting groove 4021, the vertical mounting groove 4022, and the oblique mounting groove 4023 are interconnected. Correspondingly, the water permeable pipes are also horizontal permeable pipes, vertical permeable pipes, and oblique permeable pipes, respectively. The horizontal permeable pipes, the vertical permeable pipes, and the oblique permeable pipes are interconnected. The permeable pipes are made of pressure-resistant material, and the surface of the permeable pipes is provided with a plurality of permeable holes. The surface of the permeable pipes can be wrapped with a layer of permeable cloth. The permeable pipe is connected to the water collection well 30. The water collection well 30 can adopt an assembled structure (such as a pipe segment structure), and the top of the water collection well 30 extends to the ground. The water collection well 30 is equipped with a submersible pump to drain the water in the water collection well 30. The bottom of the prefabricated base plate assembly 40 is provided with a square platform-shaped positioning groove 403, and the top of the waterproof layer 20 is provided with a positioning block 201 that cooperates with the positioning groove 403. The cooperation between the positioning block 201 and the positioning groove 403 realizes the vertical positioning of the prefabricated base plate assembly 40. The top surface of the prefabricated base plate assembly 40 is divided into a first slope 404 and a second slope 405, which are bounded by its diagonal line. The first slope 404 of one prefabricated base plate assembly 40 forms a drainage slope with the second slope 405 of another adjacent prefabricated base plate assembly 40, thereby forming four drainage slopes. The drainage slopes are trapezoidal and have a certain slope, so that water can be discharged into the water collection well 30 through the permeable pipe.

[0014] The lifting system includes four vertical beams 50, two transverse beams 60, two longitudinal beams 70, and four hydraulic telescopic rods 80. The four vertical beams 50 are located outside the four corners of the enclosure wall, with the two transverse beams 60 positioned opposite each other and the two longitudinal beams 70 positioned opposite each other. The four vertical beams 50 are divided into two groups. Each group of vertical beams 20 includes two vertical beams 50 arranged in the longitudinal direction. The ends of each longitudinal beam 70 are movably connected to the two vertical beams 50 of the corresponding group of vertical beams 50. The longitudinal beams 70 move in the vertical direction of the vertical beams 50, enabling coarse adjustment of the vertical position of the hydraulic telescopic rods 80 (fine adjustment is achieved through the hydraulic telescopic rods 80 themselves). The ends of the transverse beams 60 are movably connected to the two longitudinal beams 70, and the transverse beams 60 move in the longitudinal direction of the longitudinal beams 70, enabling adjustment of the longitudinal position of the hydraulic telescopic rods 80. The four hydraulic telescopic rods 80 are divided into two groups. Each group of hydraulic telescopic rods 80 includes two hydraulic telescopic rods 80 installed at both ends of the corresponding transverse beam 60. The hydraulic telescopic rods 80 move along the transverse direction of the transverse beam 60 to achieve adjustment of the transverse position of the hydraulic telescopic rods 80.

[0015] The pretreatment system also includes a grab bucket, a grouting device, an agitator, and a pressure plate 90. The grab bucket, the grouting device, the agitator, and the pressure plate 90 can be connected to the hydraulic telescopic rod 80. The grab bucket is used to grab soil or fix soil, the grouting device is used for grouting, the agitator is used for stirring, and the pressure plate 90 is used to squeeze the soil to achieve dehydration. Guide grooves 901 that match the guide strips 101 are provided on adjacent sides of the pressure plate 90. One corner of the pressure plate 90 is 1 / 4 circular. The size and shape of the 1 / 4 circular shape of the pressure plate 90 are respectively matched with the size and shape of the water collection well 30. The guide strips 101 and the water collection well 30 can guide the pressure plate 90 to achieve extrusion without dead angles. The four corners of the pressure plate 90 are connected to four hydraulic telescopic rods 80. The extension and retraction of the hydraulic telescopic rods 80 drive the pressure plate 90 to squeeze the earth and dehydrate it. Only four squeezes are needed (the pressure plates 90 are positioned above the four prefabricated floor assemblies 40) to completely dehydrate the earth. If the pressure of the hydraulic telescopic rods 80 is insufficient, counterweights can be placed above the pressure plate 90.

[0016] In addition, for the joint gaps mentioned above (such as the trapezoidal protrusions 102 and the trapezoidal grooves 103, the guide strips 101 and the guide grooves 401, the positioning blocks 201 and the positioning grooves 403, and the prefabricated base plate assembly 40), water-expanding strips or sealing strips can be set and concrete can be poured to achieve a waterproof effect.

[0017] like Figures 1 to 6 As shown, this embodiment also provides a working method of a solidified soil assembly pretreatment system for a construction site, which mainly includes the following steps: S1: The precast concrete sheet piles 10 are pressed into the soil by a pressing device to form a retaining wall.

[0018] S2: Construct a waterproof layer 20 at the bottom of the foundation pit.

[0019] S3: Use a hoisting device to hoist the prefabricated floor assembly 40 into the foundation pit, and make the prefabricated floor assembly 40 cooperate with the prefabricated concrete sheet piles 10 and the waterproof layer 20 to form a floor.

[0020] S4: Install permeable pipes and water collection wells 30 to form a treatment pool.

[0021] S5: Install a grab bucket on the lifting system, use the grab bucket to grab the earth transported by the transport vehicle and transfer it to the treatment pool (the space between the retaining wall, the bottom plate and the water collection well 30).

[0022] S6: Install a pressure plate 90 on the lifting system and drain the earthwork using the pressure plate 90. In addition, when the moisture content of the earthwork meets the requirements, drainage may not be performed.

[0023] S7: A grouting device and a mixer are installed on the hoisting system, and grouting (mixed with admixture and water) is performed using the grouting device and mixing is performed using the mixer to obtain solidified soil.

[0024] S8: Install a grab bucket on the lifting system, use the grab bucket to grab the solidified soil and transfer it to the transport vehicle.

[0025] The beneficial technical effects of this embodiment are: the enclosure system and the drainage system both adopt prefabricated structures, which can realize the rapid construction of the pretreatment system at the construction site, thereby improving construction efficiency; the operation is simple, and the earthwork can be quickly processed.

[0026] Although the above embodiments have described the concepts and embodiments of the present invention in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, so they are not described in detail here.

Claims

1. A pre-treatment system for solidified soil used at construction sites, characterized in that The pretreatment system includes a containment system, a drainage system and a lifting system. The containment system is a square containment wall, which is assembled from a number of precast concrete sheet piles. The precast concrete sheet piles are provided with guide strips vertically along their inner sides. The drainage system includes a waterproof layer, a base plate, a permeable pipe and a water collection well. The base plate is composed of four square precast base plate assemblies. The adjacent two sides of the precast base plate assembly are provided with guide grooves that match the guide strips. One corner of the precast base plate assembly is 1 / 4 circle. The 1 / 4 circles of the four precast base plate assemblies form a circle and are used to place the water collection well. The top surface of the precast base plate assembly is provided with a number of installation grooves for installing the permeable pipe. The permeable pipe is connected to the water collection well. The bottom of the precast base plate assembly is provided with a square table-shaped positioning groove, and the top of the waterproof layer is provided with a positioning block that matches the positioning groove.

2. The solidified soil pretreatment system for construction sites according to claim 1, characterized in that The lifting system includes four vertical beams, two transverse beams, two longitudinal beams and four hydraulic telescopic rods. The four vertical beams are respectively arranged on the outside of the four corners of the retaining wall, the two transverse beams are arranged opposite to each other, and the two longitudinal beams are arranged opposite to each other. The four vertical beams are divided into two groups. Each group of vertical beams includes two vertical beams arranged in the longitudinal direction. The two ends of each longitudinal beam are movably connected to the two vertical beams of the corresponding group of vertical beams, and the longitudinal beams move along the vertical direction of the vertical beams. The two ends of the transverse beams are movably connected to the two longitudinal beams, and the transverse beams move along the longitudinal direction of the longitudinal beams. The four hydraulic telescopic rods are divided into two groups. Each group of hydraulic telescopic rods includes two hydraulic telescopic rods installed at the two ends of the corresponding transverse beams, and the hydraulic telescopic rods move along the transverse direction of the transverse beams.

3. The solidified soil pretreatment system for construction sites according to claim 2, characterized in that The pretreatment system also includes a grab bucket, a grouting device, an agitator and a pressure plate. The grab bucket, the grouting device, the agitator and the pressure plate can be connected to the hydraulic telescopic rod respectively. Guide grooves that match the guide strips are provided on adjacent two sides of the pressure plate. One corner of the pressure plate is 1 / 4 circle, and the size and shape of the 1 / 4 circle of the pressure plate are respectively matched with the size and shape of the water collection well.

4. The solidified soil pretreatment system for construction sites according to claim 1, characterized in that The top surface of the prefabricated floor assembly is divided into a first slope surface and a second slope surface with its diagonal line as the boundary, and a drainage slope surface is formed between the first slope surface of one prefabricated floor assembly and the second slope surface of another adjacent prefabricated floor assembly.

5. The solidified soil pretreatment system for construction sites according to claim 1, characterized in that The mounting groove is divided into a transverse mounting groove, a longitudinal mounting groove and an oblique mounting groove, and the transverse mounting groove, the longitudinal mounting groove and the oblique mounting groove are connected to each other.

6. The solidified soil pretreatment system for construction sites according to claim 1, characterized in that The precast concrete sheet piles are connected via a concave-convex structure.

7. A method for operating a solidified soil pretreatment system for a construction site according to any one of claims 1 to 5, characterized in that The working method comprises the following steps: S1: Use a pressing device to press the precast concrete sheet piles into the soil to form a retaining wall; S2: construct a waterproof layer at the bottom of the foundation pit; S3: hoisting the prefabricated floor assembly into the foundation pit using a hoisting device, and cooperating the prefabricated floor assembly with the prefabricated concrete sheet piles and the waterproof layer to form a floor; S4: Install permeable pipes and water collection wells to form a treatment pool; S5: Installing a grab bucket on the lifting system, using the grab bucket to grab the soil transported by the transport vehicle and transfer it to the treatment pool; S6: Installing a pressure plate on the lifting system and using the pressure plate to drain the earth; S7: installing a grouting device and a stirrer on the lifting system, performing grouting using the grouting device and stirring using the stirrer to obtain solidified soil; S8: Install the grab bucket on the lifting system, and use the grab bucket to grab the solidified soil and transfer it to the transport vehicle.

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