Construction device for advancing backfill of basement roof

Abstract

The utility model relates to a construction device of advance backfilling, belong to building engineering technical field, specifically is a basement roof construction device of advance backfilling, including roof and soil surface, still include, support frame, the support frame sets up at the bottom of roof, waterproof roll material, waterproof roll material fixed mounting between roof and soil surface, fixed mounting has waterproof chamfer on waterproof roll material, the utility model reached the effect that improved waterproof performance, avoided secondary damage, solved the current construction method, and the problem that needs to wait for post-pouring band closed completion when backfilling, leads to the extension of construction period and possibly because of secondary excavation increases cost and waterproof layer damage risk, produces seepage hidden danger.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a construction device for backfilling soil in advance for basement roof slabs. Background Technology

[0002] In basement construction, if backfilling of the roof slab is required in advance due to tight schedules or the need for rapid outdoor landscaping construction, special construction techniques and methods must be used to ensure structural safety and reliable waterproofing.

[0003] A search revealed Chinese patent CN216615983U, which discloses a structure for pre-sealing the post-pouring strip of a basement roof slab. This addresses the technical problem that basement post-pouring strips typically require completion of the overall building structure before construction, hindering subsequent basement waterproofing and backfilling work. The patent includes a roof slab and a post-pouring strip, with a cover plate above the strip. The cover plate comprises a flat section and vertical sections at both ends of the flat section, located on the same side. The flat section is positioned directly above the post-pouring strip, while the vertical sections are supported by the roof slabs on both sides of the strip. Grouting pipes for pouring the post-pouring strip are installed on the flat section. This application pre-seales the post-pouring strip using the cover plate, preventing rainwater and soil from flowing into the basement and avoiding corrosion of the reinforcing steel at the post-pouring strip location.

[0004] Based on the above retrieval methods combined with existing technologies;

[0005] The aforementioned patent uses traditional construction methods, which require waiting for the post-pouring strip to be sealed during backfilling. This leads to a longer construction period and may increase costs and the risk of damage to the waterproofing layer due to secondary excavation, resulting in potential leakage. Therefore, it has certain limitations. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model proposes a construction device for backfilling the basement roof slab in advance, which shortens the construction period while taking into account economic benefits.

[0007] The technical solution to achieve the purpose of this utility model is: a construction device for backfilling soil in advance for basement roof slabs, including a roof slab and a soil surface, and further comprising;

[0008] A support frame, wherein the support frame is disposed at the bottom of the top plate;

[0009] A waterproof membrane is fixedly installed between the roof slab and the soil surface, and a waterproof chamfer is fixedly installed on the waterproof membrane.

[0010] Preferably, a bottom template for the post-pouring strip is fixedly installed at the bottom of the top plate, and square timber is provided at the bottom of the bottom template for the post-pouring strip. A U-shaped bracket is fixedly installed at the top of the support frame, and the U-shaped bracket is snapped onto the square timber. A stress sensor is fixedly installed on the support frame.

[0011] Preferably, self-compacting concrete is fixedly installed on the top plate, and brick formwork is fixedly installed on both sides of the self-compacting concrete and the surface of the top plate. A concrete cover plate is fixedly installed on the top of the self-compacting concrete and the brick formwork, and a seamless steel pipe is fixedly connected to the concrete cover plate.

[0012] Compared with existing technologies, the significant advantages of this invention are:

[0013] Firstly, this utility model can effectively shorten the construction period. By backfilling in advance, the above-ground structure construction can be carried out simultaneously, avoiding secondary excavation and damage to the waterproof layer. It also improves cost-effectiveness, reduces repeated machinery entry and material waste, and saves costs overall.

[0014] Secondly, this utility model ensures the safety of construction by distributing the load through the cover plate and support system, thus ensuring the safety of the top slab structure. The installed stress sensor can monitor in a timely manner and provide early warning of potential structural hazards.

[0015] This solves the problem of existing construction methods that require waiting for the post-pouring strip to be sealed during backfilling, which leads to extended construction time and may increase costs due to secondary excavation, as well as the risk of damage to the waterproof layer and potential leakage. Attached Figure Description

[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall first-view structure provided by this utility model;

[0018] Figure 2 This is a front view structural diagram provided by this utility model;

[0019] Figure 3 This is a side view structural diagram provided by this utility model;

[0020] Figure 4 This is a schematic diagram of the support frame structure provided by this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Top slab; 2. Soil surface; 3. Support frame; 4. Self-compacting concrete; 5. Waterproof membrane; 6. Brick formwork; 7. Concrete cover slab; 8. Seamless steel pipe; 9. Square timber; 10. Stress sensor; 11. U-shaped support; 12. Post-pouring strip bottom formwork; 13. Waterproof chamfer. Detailed Implementation

[0023] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0024] This utility model provides an improved construction device for pre-backfilling of basement roof slabs. The technical solution of this utility model is as follows:

[0025] like Figures 1-4 As shown, a construction device for backfilling the basement roof slab in advance includes a roof slab 1 and a soil surface 2, which avoids structural deformation and leakage risks, and significantly shortens the construction period. It also includes:

[0026] Support frame 3 is set at the bottom of top plate 1. The steel support structure disperses the load of top plate 1 and avoids structural deformation caused by the lateral pressure of backfill soil.

[0027] Waterproof membrane 5 is fixedly installed between the top plate 1 and the soil surface 2. Waterproof chamfer 13 is fixedly installed on the waterproof membrane 5. SBS modified bitumen membrane is laid on the surface of the concrete cover plate 7 to form a sealed waterproof layer. The upper part of the membrane is coated with an acrylic emulsion protective coating to enhance puncture resistance and durability.

[0028] Furthermore, a post-pouring strip bottom template 12 is fixedly installed at the bottom of the top slab 1 to prevent water and soil from seeping into the post-pouring strip area during backfilling and to ensure the quality of subsequent pouring. A square timber 9 is set at the bottom of the post-pouring strip bottom template 12, and a U-shaped bracket 11 is fixedly installed at the top of the support frame 3. The U-shaped bracket 11 is snapped onto the square timber 9, and a stress sensor 10 is fixedly installed on the support frame 3 to provide real-time feedback on load distribution and prevent the top slab 1 from cracking.

[0029] Furthermore, a self-compacting concrete 4 is fixedly installed on the top slab 1. Brick formwork 6 is fixedly installed on both sides of the self-compacting concrete 4 and the surface of the top slab 1. A concrete cover 7 is fixedly installed on the top of the self-compacting concrete 4 and the brick formwork 6. A seamless steel pipe 8 is fixedly connected to the concrete cover 7. The standardized components enable rapid installation and are adaptable to different post-pouring strip sizes.

[0030] The specific working method is as follows: First, tongue and groove joints are set in the precast concrete cover plate 7 to cover the post-pouring strip area. The joints are sealed with polyurethane foam or rubber strips to prevent water and soil seepage. Holes are reserved in the cover plate for the installation of seamless steel pipes 8 (which also serve as exhaust observation pipes and concrete pumping channels). Adjustable steel support frames 3 are installed at the bottom of the post-pouring strip bottom formwork 12 and connected by bolts to form a stable stress system, distributing the load of the top plate 1 and adapting to different post-pouring strip widths. Waterproof membrane 5 forms a multi-layer waterproof structure. SBS modified bitumen membrane is laid on the surface of the cover plate, overlapping the original waterproof layer of the top plate 1 by ≥100mm. A continuous waterproof layer is formed; an acrylic emulsion protective coating is applied to the top of the membrane; the joint between the steel pipe and the cover plate is sealed with a flexible sealing material; after the settlement stabilizes, self-compacting concrete 4 is pumped through the reserved steel pipe, utilizing its high fluidity to fill the gaps in the post-pouring strip, achieving compaction without vibration; an expansion agent is added to the concrete to compensate for shrinkage and ensure seamless bonding with the structures on both sides; after the concrete pouring is completed, the exposed steel pipe section is cut off, the surface is coated with an epoxy resin anti-corrosion layer, and covered with an additional waterproof membrane 5 for sealing; after the self-compacting concrete 4 reaches 100% strength, the steel supports and formwork are removed in stages to avoid disturbing the backfilled soil layer.

[0031] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A construction device for pre-backfilling of basement roof slabs, comprising a roof slab (1) and a soil surface (2), characterized in that: Also includes; A support frame (3) is provided at the bottom of the top plate (1); Waterproof membrane (5) is fixedly installed between the top plate (1) and the soil surface (2), and a waterproof chamfer (13) is fixedly installed on the waterproof membrane (5).

2. The construction device for pre-backfilling of basement roof slabs according to claim 1, characterized in that: The bottom of the top plate (1) is fixedly installed with a post-pouring strip bottom template (12), and a square timber (9) is provided at the bottom of the post-pouring strip bottom template (12). A U-shaped bracket (11) is fixedly installed on the top of the support frame (3), and the U-shaped bracket (11) is snapped onto the square timber (9). A stress sensor (10) is fixedly installed on the support frame (3).

3. The construction device for pre-backfilling of basement roof slabs according to claim 1, characterized in that: A self-compacting concrete (4) is fixedly installed on the top plate (1). Brick formwork (6) is fixedly installed on both sides of the self-compacting concrete (4) and the surface of the top plate (1). A concrete cover plate (7) is fixedly installed on the top of the self-compacting concrete (4) and the brick formwork (6). A seamless steel pipe (8) is fixedly connected to the concrete cover plate (7).

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