Integrated formwork for construction of retaining wall post-cast strip structure

Abstract

The utility model discloses an integrated template for construction of a retaining wall post-cast strip structure, which comprises a waterproof coiled material layer close to a post-cast strip structure area and used for preventing moisture permeation; the extruded sheet protection layer is arranged on the back side of the waterproof coiled material layer and used for keeping the temperature of the post-cast strip structure stable and protecting the waterproof coiled material; the internal resistance adjusting layer is arranged on the back side of the extruded sheet protection layer, the surface, close to the extruded sheet protection layer, of the internal resistance adjusting layer is a friction surface, and the back side surface of the internal resistance adjusting layer is a smooth surface; the steel plate layer is a steel template with a certain thickness, is used as a main pressure-bearing component and is arranged on the back side of the internal resistance adjusting layer; the outer side resistance adjusting layer is arranged on the back side of the steel plate layer, the inner side face is a smooth face, the outer side face is a friction face, and / or geogrids which are vertically arranged at intervals are additionally arranged. The construction progress and quality requirements of backfill soil around the post-cast strip can be met, it is guaranteed that structural concrete can be normally poured during post-cast strip construction, and meanwhile the waterproof and heat preservation requirements during structural construction are met.

Description

Technical Field

[0001] This utility model relates to the technical field of post-cast strip construction of retaining walls, and particularly to an integrated formwork for post-cast strip structure construction of retaining walls. Background Technology

[0002] During building construction, retaining walls and basement structures often have post-cast strips. These strips are typically located below ground level, and the surrounding foundation pits need to be backfilled. Traditional methods, such as using earthen bags and precast concrete slabs, often fail to simultaneously meet the requirements for both backfilling and the construction quality of the post-cast strip, leading to construction delays and difficulties in ensuring the quality of the backfill and the proper pouring of the post-cast strip structure. Utility Model Content

[0003] The purpose of this utility model is to provide an integrated formwork for the construction of post-cast strip structures in retaining walls, thereby solving the above-mentioned technical problems.

[0004] This utility model adopts the following technical solution: an integrated formwork for the construction of post-cast strip structures in retaining walls, comprising...

[0005] The waterproof membrane layer, located near the post-pouring strip structure area, overlaps and adheres to the waterproof membrane on the outside of the main structure at the post-pouring strip to prevent water penetration;

[0006] The extruded polystyrene board protective layer is set on the back side of the waterproof membrane layer to maintain the temperature stability of the post-pouring strip structure and protect the waterproof membrane;

[0007] An internal resistance adjustment layer is set on the back side of the extruded polystyrene board protective layer. The side closest to the extruded polystyrene board protective layer is the friction surface, and the back side of the internal resistance adjustment layer is the smooth surface.

[0008] The steel plate layer, which is a steel template with a certain thickness, serves as the main pressure-bearing component and is located on the back side of the internal resistance adjustment layer.

[0009] An outer resistance adjustment layer is set on the back side of the steel plate layer, with a smooth inner surface and a friction surface on the outer surface, and / or an additional vertically spaced geogrid.

[0010] Furthermore, the inner and outer resistance adjustment layers are made of 3-5mm thick plastic, and the friction surfaces are textured.

[0011] Furthermore, geogrids are made of plastic.

[0012] Furthermore, lubricant is injected into the smooth surfaces of both the inner and outer resistance adjustment layers.

[0013] Furthermore, a recycling lifting ring is fixedly installed at the upper end of the steel plate layer.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] 1. This template is an integrated, standardized template with the characteristics of easy installation and compact structure. It can meet the needs of efficient construction of surrounding backfill soil without affecting the construction effect of backfill soil, which can speed up the construction progress. At the same time, it can ensure that structural concrete can be poured normally during the construction of post-pouring strip, and meet the requirements of waterproofing and heat preservation during structural construction, thereby improving the construction quality.

[0016] 2. The main steel structure of this template can be recycled, which can reduce material waste and costs, and achieve the effects of material conservation and energy reduction.

[0017] 3. Standardized settings can be implemented for mass production, improving construction efficiency and increasing economic benefits for enterprises. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a side view of the present invention;

[0020] Figure 3 This is a schematic diagram of the back of the device during installation;

[0021] Figure 4 This is a front view of the present invention during installation;

[0022] Figure 5 This is a schematic diagram of earthwork backfilling during the installation of this utility model;

[0023] Figure 6 This is a schematic diagram of the steel plate recycling method of this utility model.

[0024] In the diagram: 1. Waterproof membrane layer; 2. Extruded polystyrene board protective layer; 3. Internal resistance adjustment layer; 4. Steel plate layer; 5. External resistance adjustment layer; 6. Geogrid; 7. Recycling ring; 8. Main structure; 9. Earthwork. Detailed Implementation

[0025] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an integrated formwork for the construction of a retaining wall post-pouring strip structure.

[0026] like Figure 1 and Figure 2As shown, an integrated formwork for the construction of a retaining wall post-cast strip structure includes a waterproof membrane layer 1, an extruded polystyrene board protective layer 2, an internal resistance adjusting layer 3, a steel plate layer 4, and an external resistance adjusting layer 5. The waterproof membrane layer 1 is located near the post-cast strip structure area to prevent water penetration. The extruded polystyrene board protective layer 2 is located on the back side of the waterproof membrane layer 1 to maintain the temperature stability of the post-cast strip structure and protect the waterproof membrane. The internal resistance adjusting layer 3 is located on the back side of the extruded polystyrene board protective layer 2, with the side closest to the extruded polystyrene board protective layer 2 being a friction surface for better fixation of the formwork. The back side of the internal resistance adjusting layer 3 is a smooth surface.

[0027] The steel plate layer 4 is a steel template with a certain thickness. As the main pressure-bearing component, it ensures the stability and strength of the template. It is set on the back side of the internal resistance adjustment layer 3. The back side of the internal resistance adjustment layer 3 is a smooth surface, which facilitates the disassembly and recycling of the steel template. The outer resistance adjustment layer 5 is set on the back side of the steel plate layer 4. The inner side is a smooth surface and the outer side is a friction surface, which ensures the stability of the template during the pouring process and makes it easy to disassemble.

[0028] In this embodiment, the waterproof membrane layer 1 is a 6mm thick SBS waterproof membrane with a width d = width of the post-pouring strip + 2*250mm. Its function is to ensure the waterproof quality of the structure and to allow for overlap with the surrounding structure. The extruded polystyrene board protective layer 2 is a 50mm thick extruded polystyrene board, which provides protection for the waterproof membrane and provides thermal insulation for the structure.

[0029] The internal resistance adjustment layer 3 is a plastic product with a thickness of 3~5mm. The side closest to the extruded board protective layer 2 has a rough surface with greater friction, while the side closest to the steel plate has a smooth surface. A thin layer of lubricant can be injected between the steel plate and the internal resistance adjustment layer 3 using a pressure pump before the steel plate is recycled. Its function is to reduce the impact of the rising steel plate on the protective layer when the steel plate is recycled.

[0030] Steel plate layer 4 is made of 8mm thick steel plate. It serves as the supporting structure for the formwork, possessing a certain degree of rigidity and minimal deformation. Its function is to act as the outer formwork during the construction of the post-pouring strip, and also as an important isolation layer during earthwork backfilling to prevent the backfill from affecting the structural dimensions of the post-pouring strip. A recovery lifting ring 7 made of 12mm diameter plain round steel bar is welded to the upper end of the steel plate. After construction is completed, the steel plate is retrieved using lifting equipment.

[0031] The outer resistance adjustment layer 5 is a 3-5mm thick plastic product. It is roughened near the backfill layer and / or a geogrid 6 is added. The geogrid 6 is a 3-5mm thick plastic product. It is set every 500mm along the template and is pressed into the soil layer in layers during backfilling. The side near the steel plate is smooth. Before the steel plate is recycled, a thin layer of lubricant can be injected between the steel plate and the outer resistance adjustment layer 5 using a pressure pump. The purpose is to reduce the resistance caused by the backfill when the steel plate is recycled.

[0032] like Figure 3 and Figure 4 As shown, after the construction of the post-pouring strip in the basement is completed, the template is set on the side of the post-pouring strip close to the backfill soil. The waterproof membrane reserved in the template is overlapped and bonded with the waterproof membrane on the outside of the main structure 8 at the post-pouring strip to ensure the waterproof effect at this point.

[0033] like Figure 5 As shown, before the post-pouring strip is constructed, the surrounding earthwork 9 can be backfilled in layers, with the outer geogrid 6 pressed into the earthwork 9 in layers to improve the progress and quality of the backfill. Once the post-pouring strip reaches its design strength, the inner formwork can be installed and fixed before normal pouring can begin at the post-pouring strip.

[0034] like Figure 6 As shown, after the main structure 8 and backfill soil are fully constructed, the steel plate is lifted and recycled by the recycling ring 7 set on the formwork using mechanical lifting, and yellow sand is poured in to reduce deformation of the backfill area.

[0035] The integrated formwork in this embodiment has a reasonable structure, comprehensive functions, and is easy to recycle. It can meet the construction progress and quality requirements of the backfill soil around the retaining wall and the post-cast strip of the basement, ensure that the structural concrete can be poured normally during the construction of the post-cast strip, and at the same time meet the requirements of waterproofing and heat preservation during the construction of the structure, thus improving the construction quality and having significant technical advantages and economic benefits.

[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An integrated formwork for retaining wall post-cast strip structure construction, characterized by, Comprising a waterproofing membrane layer (1) which is close to the post-cast strip structure area and is overlapped and adhered to the waterproofing membrane outside the main structure (8) at the post-cast strip, for preventing water penetration; an extruded sheet protection layer (2) which is arranged at the back side of the waterproofing membrane layer (1) and is used for maintaining the temperature stability of the post-cast strip structure and protecting the waterproofing membrane; an internal resistance adjusting layer (3) which is arranged at the back side of the extruded sheet protection layer (2), one side of the extruded sheet protection layer (2) is a friction surface, and the back side of the internal resistance adjusting layer (3) is a smooth surface; a steel sheet layer (4) which is a steel template with a certain thickness and is used as a main pressure bearing component and is arranged at the back side of the internal resistance adjusting layer (3); an external resistance adjusting layer (5) which is arranged at the back side of the steel sheet layer (4), the inner side is a smooth surface, and the outer side is a friction surface and / or a vertical spacing arranged geogrid (6) is additionally provided.

2. The integrated formwork for construction of retaining wall post-cast strip structure according to claim 1, characterized in that, The internal resistance adjusting layer (3) and the external resistance adjusting layer (5) are 3-5mm plastic products, and the friction surface is a rough surface.

3. The integrated formwork for construction of retaining wall post-cast strip structure according to claim 2, wherein, The geogrid (6) is a plastic product.

4. The integrated formwork for construction of retaining wall post-cast strip structure according to claim 1, wherein, The smooth surface side of the internal resistance adjusting layer (3) and the external resistance adjusting layer (5) is injected with a lubricant.

5. The integrated formwork for construction of a retaining wall post-cast strip structure according to any one of claims 1 to 4, characterized in that, The upper end of the steel sheet layer (4) is fixedly provided with a recovery lifting ring (7).

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