Novel prefabricated concrete post-cast strip cushion treatment device
By using a precast concrete post-cast strip bedding treatment device, which utilizes components such as clay layer, precast slab and waterproof layer, the problem of slow construction progress caused by water accumulation in basement construction has been solved, thereby improving construction efficiency and achieving factory production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-03-17
AI Technical Summary
Existing technologies, when constructing basements in rainy weather or when the groundwater level is high, cause the soil in the bearing layer of the foundation to soften due to water accumulation in the foundation trench, requiring repeated excavation, which leads to slow construction progress and waste of manpower and equipment.
The precast assembled concrete post-pouring strip subbase treatment device is adopted, which includes a clay layer, precast slabs, a waterproof layer and a steel structure frame. The use of precast slabs simplifies the construction process, reduces construction steps and improves construction efficiency.
It shortened the construction period, reduced labor consumption, enabled standardized factory production, and avoided the construction progress being affected by the weather.
Smart Images
Figure CN224001986U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of post-cast strip cushion layer treatment technology, specifically relating to a novel precast assembled concrete post-cast strip cushion layer treatment device. Background Technology
[0002] The current industry practice involves excavating the soil and rock of the post-cast strip foundation trench and then pouring a subbase. After the subbase has set and been cured to a certain strength, a brick formwork is laid. Once the mortar for the brick formwork has reached a certain strength, it is then plastered. However, basement construction conditions are harsh. In cases of rain or high groundwater levels, water accumulation in the foundation trench can soften the soil in the bearing layer, requiring repeated excavation, resulting in slow progress and wasted labor and machinery. Therefore, this application proposes a novel precast assembled concrete post-cast strip subbase treatment device, which simplifies the construction process, uses precast slabs, solves the difficulties of basement construction due to rainy seasons and high groundwater levels, accelerates the construction progress, and reduces idle labor and manpower consumption. Utility Model Content
[0003] The purpose of this invention is to provide a novel precast concrete post-cast strip bedding layer treatment device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel precast assembled concrete post-cast strip cushion layer treatment device, comprising a clay layer, a precast slab, a cushion layer, a waterproof layer, and a steel structure frame.
[0005] The precast slab is located on the upper side of the clay layer, and the outer surface of the precast slab is provided with a waterproof layer for waterproofing.
[0006] A steel structural frame is provided on the upper side of the precast slab to increase its strength.
[0007] Preferably, the clay layer is disposed on both sides of the precast slab, and the clay layer is configured as a right-angled trapezoid.
[0008] Preferably, the precast slab is made of cast concrete.
[0009] Preferably, the outer surface of the precast slab is smooth and free of pores.
[0010] Preferably, the precast slab has horizontal and vertical angles.
[0011] Preferably, the dimensions at point a in the precast slab are 100mm, the dimensions at point b in the precast slab are 100mm, the dimensions at point c in the precast slab are 450mm, and the dimensions at point d in the precast slab are 600mm.
[0012] Preferably, the dimension at point e in the precast slab is 100mm, the dimension at point f in the precast slab is 400mm, the dimension at point g in the precast slab is 1400mm, the dimension at point h in the precast slab is 1800mm, and the dimension at point j in the precast slab is 100mm.
[0013] Preferably, the cushion layer is located above the clay layer and on both sides of the precast slab.
[0014] Preferably, a waterproof layer is provided on the upper surface of the precast slab. The waterproof layer has a two-layer structure, namely a roll layer and a felt layer, wherein the roll layer includes a waterproof roll.
[0015] Preferably, the waterproof membrane is laid on the precast slab after installation, and a felt cloth is laid on top of the waterproof membrane.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] This utility model reduces the traditional process of laying out and excavating → manual leveling → pouring concrete foundation → laying out → building brick formwork → plastering brick formwork → curing to: laying out and excavating → manual leveling → installing precast concrete foundation → grouting → curing. The new precast assembled concrete post-pouring strip foundation treatment device reduces the construction process to: laying out and excavating → manual leveling → installing precast concrete foundation → grouting → curing. This reduces construction steps and shortens the construction period. By using precast slabs for the construction of the concrete post-pouring strip foundation, it offers advantages such as more convenient construction, immunity to weather interference, reduced labor consumption, standardized factory production, improved work efficiency, and shorter construction time. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the existing concrete post-pouring strip cushion layer treatment device in this utility model.
[0019] Figure 2 This is a schematic diagram of the structure of the precast slab in this utility model.
[0020] Figure 3 This is a schematic diagram of the structure of the novel precast concrete post-pouring strip cushion layer treatment device of this utility model.
[0021] Figure 4 This is a schematic diagram of the structure of the novel precast concrete post-pouring strip cushion layer treatment device of this utility model after adding a steel structure frame.
[0022] In the diagram: 1. Clay layer; 2. Precast slab; 3. Subbase; 4. Waterproof layer; 5. Steel frame. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Reference Figure 1 The existing concrete post-pouring strip subbase treatment device includes two C15 concrete subbases, compacted clay, brick formwork, and plaster layer. The specific operation adopts the following process: layout and excavation → manual leveling → pouring concrete subbase (the bottom C15 concrete subbase) → layout → brick formwork construction → plastering the brick formwork → curing.
[0025] Reference Figures 2-4 A novel precast concrete post-cast strip bedding treatment device includes a clay layer 1, a precast slab 2, a bedding layer 3, and a waterproof layer 4.
[0026] Clay layer 1 is set on both sides of precast slab 2, and clay layer 1 is set in the shape of a right trapezoid;
[0027] The precast slab 2 is made of concrete. After being poured, it is transported to the installation site by transportation equipment. The precast slab 2 is placed on the clay layer 1, which can quickly facilitate the treatment of the concrete post-pouring strip cushion layer and greatly shorten the construction period.
[0028] Furthermore, the concrete grade used for pouring precast slab 2 is C15;
[0029] The precast slabs should be vibrated to ensure they are compacted, have a smooth, pore-free surface, and straight, horizontal and vertical corners, resulting in an aesthetically pleasing appearance. After installation, the next process can be carried out directly, ensuring that the waterproof layer is bonded without gaps.
[0030] After the precast slabs are produced, they should be watered and cured according to the specifications for a period of not less than 7 days.
[0031] BIM visualization technology is used for on-site construction simulation and briefing, enabling pre-construction control to ensure accurate dimensional forming of precast components and neat, seamless joints between each slab. Simulated excavation of foundation trenches ensures the trench dimensions match the dimensions of the precast concrete post-cast strip bedding layer, preventing gaps after grouting and guaranteeing no subsidence or other quality issues after installation. During on-site construction, measurements and layouts are performed based on the BIM model, and construction is then carried out according to the layout.
[0032] Key control points for post-cast strip foundation trench excavation.
[0033] 1) Lay out the layout on site according to the dimensions of the post-pouring strip and the precast precast slab of the precast subbase on the construction drawings.
[0034] 2) Technicians organize hydraulic excavators to excavate the foundation trench according to the site layout, and organize workers to cooperate with the machinery in a timely manner to complete the remaining soil around the foundation trench and the foundation trench repair.
[0035] 3) During excavation, ensure accurate measurement of the foundation trench elevation and control of dimensions; ensure that the forming dimensions match the dimensions of the precast components; and ensure that there are no gaps between the precast slab 2 and the foundation trench after grouting.
[0036] 4. Installation of a new type of precast concrete post-pouring strip bedding layer treatment device.
[0037] 1) After the concrete reaches the required age, it is transported to the construction site using a truck-mounted crane.
[0038] 2) Organize workers to prepare M7.5 cement mortar. Before installation, spread M7.5 cement mortar on the contact surface between the precast slab 2 and the foundation. Then, direct the hoisting and installation of the precast slab 2.
[0039] 3) During installation, ensure that there are no gaps between the panels, and that the flatness and internal and external corners meet the specifications.
[0040] 4) After installation, organize a self-inspection in a timely manner, use a 2m long straightedge to check the flatness, the evaluation standard is [0, 8]mm, and there is no misalignment of the inside and outside corners; after the self-inspection is qualified, arrange workers to mix M10 cement mortar for grouting in a timely manner.
[0041] 5) After the grouting self-inspection is qualified, the supervisor and construction unit shall be organized to accept the acceptance in a timely manner.
[0042] 6) Once the inspection is passed, the waterproofing layer construction can begin.
[0043] Precast slab 2 mold making:
[0044] Design a quick-release mold that is not easily deformed and can be reused. After comparing different options, a 3mm thick steel plate was selected to make a modular steel mold. The outer main keel is made of 60mm wide × 100mm high × 4mm thick hot-dip galvanized square tube. The bottom mold is made of 3mm thick steel plate pressed and folded into the size of a prefabricated component. The bottom mold and the main keel are connected by full welding. The weld scars need to be ground smooth.
[0045] The face mold is made of openable steel mold. The face mold is connected to the main keel on one side by a 3-page lily, which can be opened flexibly, and the other side is fixed by a pin.
[0046] Before pouring concrete, the steel formwork should be coated with release agent, and the HPB300φ12 lifting rings should be installed and securely tied to the C8@250 steel mesh.
[0047] Place 25mm thick concrete spacers at 500mm intervals between the reinforcing bars and the formwork;
[0048] The concrete was mixed according to the C15 experimental mix ratio provided by the testing company, using PC42.5 early-strength cement with a slump of 140mm. During pouring, a forklift was used to move the steel mold to the mixer outlet, and manual assistance was provided to level the concrete slightly higher than the sides of the steel mold. After the bottom slab was filled with concrete, the side mold panels were closed and the pins were inserted. The concrete was then manually shoveled in, with steel bars inserted into the concrete as it was being shoveled to ensure that the space between the side molds was filled with concrete. The forklift was then used to transfer the precast components to a flat vibrating table. After the concrete (with no air bubbles on the surface) was vibrated and compacted, it was transported to the curing area. The upper surface of the precast components required manual repair and polishing. The curing area was equipped with an automatic sprinkler system for curing, and the curing period was no less than 7 days.
[0049] For reference Figure 1 Precast slab 2, the dimensions at point a are 100mm, at point b are 100mm, at point c are 450mm, at point d are 600mm, at point e are 100mm, at point f are 400mm, at point g are 1400mm, at point h are 1800mm, and at point j are 100mm.
[0050] The cushion layer 3 is located above the clay layer 1, and the cushion layer 3 is located on both sides of the precast slab 2;
[0051] A waterproof layer 4 is provided on the upper surface of the precast slab 2. The waterproof layer 4 has a two-layer structure, namely a roll material layer and a felt layer. The roll material layer includes a waterproof roll material, which is laid on the precast slab 2 after installation. A felt layer is laid on top of the waterproof roll material.
[0052] In a further embodiment, refer to Figure 4 It also includes a steel structure frame 5, which is located above the precast slab 2.
[0053] Working principle:
[0054] By using precast slabs 2 for the construction of concrete post-cast strip cushion layer, the construction is more convenient, not affected by weather, can reduce labor consumption, realize standardized factory production, improve work efficiency and shorten the construction period.
[0055] During the actual construction: after the excavator excavates the foundation trench, the slope is corrected by manual assistance. The prefabrication plant uses a truck-mounted crane to transport the prefabricated parts to the construction site. The prefabricated parts are then hoisted onto the foundation trench and manually installed. After the installation is stable, the masons are arranged to grout the joints and clean up the excess mortar, ensuring that the site is clean after the work is completed. After the mortar has set, it is watered for curing. Once the mortar has reached its strength, the waterproof layer can be applied.
[0056] The traditional process of laying out and excavating → manual leveling → pouring concrete foundation → laying out → building brick formwork → plastering brick formwork → curing has been reduced to the following steps by the new precast concrete post-pouring strip foundation treatment device: laying out and excavating → manual leveling → installation of precast post-pouring strip foundation → grouting → curing. This reduces the number of construction steps and shortens the construction period.
[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A new prefabricated assembly type concrete post-cast strip cushion treatment device, characterized by, The application relates to a waterproof and reinforced prefabricated plate, which comprises a clay layer (1), a prefabricated plate (2), a cushion layer (3), a waterproof layer (4) and a steel structure framework (5). The prefabricated plate (2) is arranged on the upper side of the clay layer (1), and the outer surface of the prefabricated plate (2) is provided with the waterproof layer (4) for waterproofing. The upper side of the prefabricated plate (2) is provided with the steel structure framework (5) for increasing the strength.
2. The new prefabricated assembled concrete post-cast strip cushion treatment device according to claim 1, characterized in that, The clay layer (1) is arranged on both sides of the prefabricated plate (2), and the clay layer (1) is arranged in a right-angled trapezoidal shape.
3. The new prefabricated assembled concrete post-cast strip cushion treatment device according to claim 1, characterized in that, The prefabricated plate (2) is made of concrete pouring.
4. The new prefabricated assembly type concrete post-cast strip cushion treatment device according to claim 3, characterized in that, The outer surface of the prefabricated plate (2) is smooth and has no pores.
5. The new prefabricated assembly type concrete post-cast strip cushion treatment device according to claim 4, characterized in that, The prefabricated plate (2) is rhombic, horizontal in the horizontal direction and vertical in the vertical direction.
6. The new prefabricated assembled concrete post-cast strip cushion treatment device according to claim 1, characterized in that, The size of a in the prefabricated plate (2) is 100mm, the size of b in the prefabricated plate (2) is 100mm, the size of c in the prefabricated plate (2) is 450mm, and the size of d in the prefabricated plate (2) is 600mm.
7. The new prefabricated assembled concrete post-cast strip cushion treatment device according to claim 1, characterized in that, The size of e in the prefabricated plate (2) is 100mm, the size of f in the prefabricated plate (2) is 400mm, the size of g in the prefabricated plate (2) is 1400mm, the size of h in the prefabricated plate (2) is 1800mm, and the size of j in the prefabricated plate (2) is 100mm.
8. The new prefabricated assembled concrete post-cast strip cushion treatment device according to claim 1, characterized in that, The cushion layer (3) is arranged above the clay layer (1) and on both sides of the prefabricated plate (2).
9. The new prefabricated assembled concrete post-cast strip cushion treatment device according to claim 1, characterized in that, The upper surface of the prefabricated plate (2) is provided with the waterproof layer (4), and the waterproof layer (4) is provided with a two-layer structure, i.e. a coiled material layer and a felt cloth layer, wherein the coiled material layer comprises waterproof coiled material.
10. A new prefabricated concrete post-cast strip cushion treatment device according to claim 9, characterized in that, The waterproof coiled material is laid on the prefabricated plate (2) after installation, and the felt cloth is laid above the waterproof coiled material.