Construction process of solidified soil moulding bed

Abstract

The construction technology comprises the following steps that a bearing platform pit is excavated, and the bearing platform pit with the needed size is formed in a foundation pit through an excavator; and cushion layer pouring is conducted, specifically, a cushion layer mold is built in the center of the bearing platform pit, and concrete is poured into the cushion layer mold. And boundary line measurement: drawing a required bearing platform boundary line on the cushion layer according to the size of the required bearing platform. And the forming mold is fixed to the surface of the cushion layer. And an outer ring cavity is formed between the forming mold and the surrounding soil layer. According to the invention, a solidified soil pouring mode is adopted to replace bricks and prefabricated slabs to form a brick forming die of the bearing platform, so that the outer ring of the solidified soil forming die is tightly attached to a surrounding soil layer. In addition, compared with a solid wall and solidified soil pouring mode, soil generated by excavation of a construction site can be effectively utilized, the cost needed by soil treatment is saved, the requirement needed by processing is met, the investment cost is greatly reduced while loss during processing is shortened, and the energy-saving and environment-friendly effects are achieved.

Description

Technical Field

[0001] This invention belongs to the field of solidified soil formwork technology, specifically relating to a construction process for solidified soil formwork. Background Technology

[0002] In existing technologies, when constructing high-rise buildings, after the foundation pit is excavated to the bottom slab elevation, a foundation cap needs to be excavated, followed by the construction of a solidified soil formwork, and finally, the foundation pit is backfilled. Current methods for constructing solidified soil formwork primarily involve building aerated concrete blocks. While this method provides guaranteed strength, it is also costly.

[0003] Chinese patent publication number "CN110344428A" discloses a construction method for using pin-mounted precast slabs to replace the foundation solidification soil formwork, including the following steps: Precast slab fabrication: Precast slabs are fabricated on-site, with splicing steel bars on the wide side and a positioning pin ring on one of the long sides; Site preparation: The foundation soil is cleaned, leveled, and compacted; Precast slab positioning: Precast slabs are erected sequentially around the foundation, with the side of the precast slab with the positioning pin ring facing upwards; Precast slab splicing: The bottom of the precast slab is fixed to the foundation soil using masonry mortar, and the splicing steel bars between adjacent precast slabs are also fixed using masonry mortar; Precast slab reinforcement: Steel bars are selected as pins and inserted into the positioning pin rings of the precast slabs located on the same plane.

[0004] The aforementioned patent uses precast slabs instead of bricks to form the outer mold required for the foundation, achieving a reusable effect. However, in practical use, a gap needs to be left between the foundation and the surrounding soil layer for the precast slabs to be easily demolded after the foundation is cast. This results in a gap between the foundation and the surrounding soil layer, reducing the structural strength between them. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a construction process for solidified soil formwork to solve the technical problem of gaps between the precast formwork-made foundation and the surrounding soil layer.

[0006] To achieve the above objectives, the specific technical solution of the present invention is as follows: A construction process for a solidified soil formwork includes the following steps: Step S1, excavation of the foundation pit: excavation is carried out using an excavator to form a foundation pit of the required size within the foundation pit.

[0007] Step S2, foundation layer pouring: A foundation layer mold is built at the center of the foundation pit, and concrete is poured into the foundation layer mold. After the concrete solidifies, a foundation layer is formed to support the foundation mold.

[0008] Step S3, edge line measurement: Measure and lay out the required foundation dimensions on the subgrade, and draw the required foundation boundary lines.

[0009] Step S4: Solidify the soil by setting up the formwork. Based on the position of the boundary line in step S3, fix the forming mold on the surface of the subgrade. An outer cavity for pouring solidified soil material is formed between the forming mold and the surrounding soil layer.

[0010] Step S5, Solidified Soil Pouring: Weigh soil, water, and solidifying agent, and mix them to form solidified soil raw material. Pour the solidified soil raw material into the outer ring cavity, and after solidification, form a solidified soil mold. The inner ring of the solidified soil mold forms the inner ring cavity for the foundation pouring.

[0011] Step S6: Mold removal. After the solidified soil raw material has solidified, the forming mold is removed.

[0012] Furthermore, the molding die in step S4 includes four solidified soil supports symmetrically arranged around the central axis of the base layer. Adjacent solidified soil supports slide against each other at their joints.

[0013] Furthermore, each solidified soil formwork has multiple locking holes arranged in sequence. The locking holes on two solidified soil formworks are aligned with each other. By inserting pins into the two aligned locking holes, the relative positions of the two solidified soil formworks are locked.

[0014] Furthermore, each solidified soil formwork is equipped with a limiting block, which can limit the position when two adjacent solidified soil formworks slide in opposite directions to their limit positions.

[0015] Furthermore, the distance between the limiting block and the end of the solidified soil formwork is 200mm.

[0016] Furthermore, in step S5, the ratio of soil, water, and curing agent is 10:3:1.

[0017] Compared with the prior art, the present invention has the following advantages: 1. This invention replaces bricks and precast slabs with a method of solidified soil casting to form the brick formwork for the foundation. After the solidified soil casting is completed and the solidified soil formwork is formed, the outer ring of the solidified soil formwork is tightly bonded to the surrounding soil layer. In addition, compared with solid walls, the solidified soil casting method can effectively utilize the soil generated by excavation at the construction site, saving the cost of soil treatment, and meeting the processing requirements. This achieves a significant reduction in investment costs while shortening processing losses, thus achieving energy-saving and environmentally friendly effects.

[0018] 2. The molding die in this invention is composed of four mutually sliding solidified soil supports, which allows for free adjustment according to the required size of the foundation during actual use, thereby adapting to the construction of foundations of different sizes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the foundation casting structure in this invention; Figure 3 This is a schematic diagram of the molding die in this invention; Figure 4 This is a schematic diagram of the structure at the junction of two adjacent solidified soil formwork sections in this invention.

[0020] Attached reference numerals: 1. Subbase; 2. Molding mold; 3. Surrounding soil layer; 4. Solidified soil formwork; 5. Foundation; 6. Solidified soil support. Detailed Implementation

[0021] In the description of this invention, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] like Figure 1 and 2 As shown, a construction process for a solidified soil formwork includes the following steps: Step S1, excavation of the foundation pit: excavation is carried out using an excavator to form a foundation pit of the required size within the foundation pit.

[0024] Step S2, pouring of foundation layer 1: a foundation layer mold is built at the center of the foundation pit, and concrete is poured into the foundation layer mold. After the concrete solidifies, foundation layer 1 is formed to support the foundation mold.

[0025] Step S3: Boundary line measurement. Based on the required dimensions of the foundation 5, measure and lay out on the pad 1, and draw the required boundary line of the foundation 5 on the pad 1 with ink lines.

[0026] Step S4: Solidify the soil formwork 6. Based on the position of the boundary line in step S3, fix the molding mold 2 on the surface of the cushion layer 1. The molding mold 2 and the surrounding soil layer 3 form an outer cavity for pouring solidified soil raw materials.

[0027] like Figure 3As shown, in this embodiment, the molding mold 2 includes four solidified soil support molds 6 symmetrically arranged around the central axis of the base layer 1. Adjacent solidified soil support molds 6 slide together at their joints. Workers adjust the positions of the two solidified soil support molds 6 to achieve the required inner ring size of the solidified soil mold 4 for pouring.

[0028] Furthermore, each solidified soil formwork 6 has multiple locking holes arranged in sequence. When two adjacent solidified soil formwork 6 are adjusted to the corresponding size, the locking holes on the two solidified soil formwork 6 align with each other. By inserting pins into the two aligned locking holes, the relative positions of the two solidified soil formwork 6 are locked.

[0029] Furthermore, each solidified soil formwork 6 is equipped with a limiting block, which can form a position limit when two adjacent solidified soil formwork 6 slide in opposite directions to the limit position. As a result, the edges of the two adjacent solidified soil formworks overlap with each other, which can effectively prevent the solidified soil material from seeping into the center through the gaps during the solidified soil pouring.

[0030] In this embodiment, the distance between the limiting block and the end of the solidified soil formwork 6 is 200mm.

[0031] Step S5: Solidified soil pouring. Soil, water, and solidifying agent are weighed and mixed to form solidified soil raw material. This raw material is poured into the outer ring chamber, and after solidification, a solidified soil mold 4 is formed. The inner ring of the solidified soil mold 4 forms the inner ring chamber for pouring the foundation 5.

[0032] In this embodiment, the ratio of soil, water and curing agent is 10:3:1.

[0033] Step S6: Mold removal. After the solidified soil raw material has solidified, the forming mold 2 is removed and cleaned before being used for the remaining solidified soil pouring operations.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A construction process for a solidified soil formwork, characterized in that: Includes the following steps: Step S1, excavation of the foundation pit: excavation is carried out using an excavator to form a foundation pit of the required size in the foundation pit. Step S2, foundation layer (1) pouring: build foundation layer molds around the foundation pit and pour concrete into the foundation layer molds. After the concrete solidifies, a foundation layer (1) is formed to support the foundation molds. Step S3, edge line measurement: measure and lay out on the pad (1) according to the required size of the foundation (5), and draw the required boundary line of the foundation (5); Step S4, solidify the soil formwork (6), according to the position of the boundary line in step S3, fix the forming mold (2) on the surface of the cushion layer (1); the forming mold (2) and the surrounding soil layer (3) form an outer ring cavity for pouring solidified soil raw materials; Step S5, solidified soil pouring, weigh soil, water and solidifying agent, and mix them to form solidified soil raw material; pour the solidified soil raw material into the outer ring cavity, and form solidified soil mold (4) after solidification; the inner ring of the solidified soil mold (4) forms the inner ring cavity for the foundation (5) pouring; Step S6, mold removal: After the solidified soil raw material has solidified, the forming mold (2) is removed.

2. The construction process of a solidified soil formwork according to claim 1, characterized in that: The molding mold (2) in step S4 includes four solidified soil formworks (6) symmetrically arranged around the central axis of the base layer (1); the joints of two adjacent solidified soil formworks (6) are slidably fitted for the construction of foundations of different sizes.

3. The construction process of a solidified soil formwork according to claim 2, characterized in that: Each of the solidified soil formwork (6) has multiple lock holes arranged in sequence; the lock holes on the two solidified soil formworks (6) are aligned with each other; by inserting pins into the two aligned lock holes, the relative positions of the two solidified soil formworks (6) are locked.

4. The construction process of a solidified soil formwork according to claim 2, characterized in that: Each of the solidified soil formwork (6) is provided with a limiting block, which can form a position limit when two adjacent solidified soil formworks (6) slide in opposite directions to the limit position.

5. The construction process of a solidified soil formwork according to claim 4, characterized in that: The distance between the limiting block and the end of the solidified soil formwork (6) is 200mm.

6. The construction process of a solidified soil formwork according to claim 1, characterized in that: In step S5, the ratio of soil, water, and curing agent is 10:3:1.

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