Novel convenient and efficient prefabricated post-pouring strip blocking plate

Abstract

This utility model discloses a novel, convenient, and efficient precast post-cast strip sealing plate, comprising a concrete exterior wall, a post-cast strip already set between the concrete exterior walls, a concrete slab set outside the post-cast strip, and a fastening mechanism set between the post-cast strip and the concrete slab. This utility model has strong applicability; even when the basement has a high floor height, it can still meet the sealing requirements by simply stacking precast slabs layer by layer to complete the reinforcement. It has low cost, as the precast slabs are made of C30 concrete, which is cheaper than steel plates. It is convenient to manufacture and construct; the formwork is prefabricated, the manufacturing process is simple, and the concrete slabs are equipped with lifting rods for convenient and quick hoisting. The sealing effect is significant; the concrete + waterproof mortar seal is tight, preventing soil ingress and water seepage, and further enhancing the waterproofing effect of weak points in the post-cast strip. It has high safety; due to the use of welded straight steel bars internally, the precast slab can be prevented from tipping over during installation, resulting in better safety and stability.

Description

Technical Field

[0001] This utility model relates to the field of sealing plate technology, and in particular to a new type of convenient and efficient precast post-pouring strip sealing plate. Background Technology

[0002] The flexible waterproof layer at the post-cast strip of the exterior wall should be poured continuously after the exterior wall concrete construction is completed and a steel plate or concrete slab is added at the post-cast strip. At the construction site, the post-cast strip of the basement exterior wall is usually sealed with wooden boards or brick walls.

[0003] Among them, wooden boards have poor load-bearing capacity for sealing, brick wall construction efficiency is low, and both have poor stability when facing tall walls. However, when using steel plates for sealing, due to the large number of post-pouring strips and the inconsistent basement heights of each project, the steel plates need to be customized, resulting in higher costs.

[0004] A construction joint seepage prevention structure disclosed in Chinese patent document CN202020515755.6 includes a base plate, a first water-retaining component, a first seepage-proof wall, a precast slab, an outer wall, and a waterstop plate, all positioned on either side of the construction joint. The height of the base plate is less than the height of the construction joint. The lower part of the first water-retaining component is embedded in the upper part of the base plate. The first seepage-proof wall is located above the base plate and spans across the upper part of the construction joint, with the upper part of the first water-retaining component inserted into the first seepage-proof wall. The precast slab is located above the base plate and outside the first seepage-proof wall. The outer wall is located outside the precast slab. The waterstop plate is located above the first seepage-proof wall and extends beyond the outer wall of the precast slab in the width direction. However, this construction joint seepage prevention structure has low installation efficiency and is not suitable for sealing pouring strips.

[0005] To address the shortcomings of the existing technologies, providing a novel, convenient, and efficient precast post-cast strip sealing plate is a problem worthy of research. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of wooden boards, such as poor load-bearing capacity, low construction efficiency of brick walls, and poor stability when facing tall walls. Using steel plates for sealing is also problematic because there are many post-pouring strips and the basement height varies from project to project, requiring custom-made steel plates, which is costly. This invention provides a new type of convenient and efficient prefabricated post-pouring strip sealing plate, which achieves the technical effect of making post-pouring strip sealing simple, efficient, and stable.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A novel, convenient, and efficient precast post-cast strip sealing plate includes a concrete exterior wall, a post-cast strip already set between the concrete exterior walls, a concrete slab set outside the post-cast strip, and a fastening mechanism set between the post-cast strip and the concrete slab.

[0009] The fastening mechanism includes straight reinforcing bars installed in the post-pouring strip and hanging bars installed in the concrete slab.

[0010] The positions and numbers of the straight reinforcing bars correspond to those of the hanging bars, and the ends of the straight reinforcing bars and the ends of the hanging bars are fixedly connected by welding. When the basement floor height is high, the sealing requirements can still be met. Reinforcement can be completed simply by stacking the precast slabs layer by layer. The cost is low, as the precast slabs are made of C30 concrete, which is cheaper than steel plates. The manufacturing and construction are convenient. The formwork is prefabricated in advance, the manufacturing process is simple, and the concrete slabs are equipped with hanging bars, making hoisting convenient and quick. The sealing effect is significant. The concrete + waterproof mortar seals tightly, making it difficult for soil to seep in and water to penetrate. The effect is significant, further enhancing the waterproofing effect of the weak parts of the post-cast strip. The safety is high. Because straight reinforcing bars are welded inside, the precast slabs can be prevented from tipping over during installation, resulting in better safety and stability.

[0011] Two C12 U-shaped lifting bars are pre-embedded in each concrete slab, and the two lifting bars are distributed vertically and centrally. The straight steel bars are C12 straight steel bars.

[0012] With its rigid connection, quick installation and long-lasting sealing, it solves the problems of easy displacement and leakage of traditional post-pouring strip sealing plates, and is especially suitable for basements of high-rise buildings.

[0013] The fastening mechanism also includes transition slopes set on both sides of the concrete slab. The cross-sectional shape of the transition slope is a right triangle, and the material of the transition slope is M10 waterproof mortar. Setting the transition slope in a triangular shape ensures the tightness of the seal and increases the angle of the inside and outside corners.

[0014] A waterproof layer is provided on the outside of the concrete slab. The waterproof layer covers the outside of the concrete slab and the transition slope. The waterproof material of the waterproof layer is resistant to ultraviolet rays and acids and alkalis, adapts to complex underground environments, and can extend the maintenance cycle to 10 years.

[0015] The concrete slab is a precast slab, and each concrete slab has a single layer of bidirectional steel mesh inside. Adjacent concrete slabs are connected by tongue and groove assembly. By placing the concrete slab on the outside of the post-pouring strip, the concrete slab can further enhance the hardness of the wall.

[0016] Positive and beneficial effects:

[0017] 1. This new type of convenient and efficient precast post-cast strip sealing slab has strong applicability. Even when the basement has a high floor height, it can still meet the sealing requirements. Reinforcement can be completed simply by stacking the precast slabs layer by layer. It has a low cost, as the precast slabs are made of C30 concrete, which is cheaper than steel plates. It is easy to manufacture and construct. The formwork is precast in advance, the manufacturing process is simple, and the concrete slabs are equipped with lifting bars for easy and quick hoisting. The sealing effect is significant. The concrete + waterproof mortar seals tightly, making it difficult for soil to seep in and further enhancing the waterproof effect of the weak parts of the post-cast strip. It has high safety. Because straight steel bars are welded inside, the precast slabs can be prevented from tipping over during installation, resulting in better safety and stability.

[0018] 2. This new type of convenient and efficient precast post-pouring strip sealing plate solves the problems of easy displacement and leakage of traditional post-pouring strip sealing plates through rigid connection, rapid installation and long-term sealing. It is especially suitable for high-requirement scenarios such as basements of high-rise buildings and subway tunnels, and has both advanced technology and economy.

[0019] 3. This new type of convenient and efficient precast post-cast strip sealing plate uses waterproof mortar to make a sloping joint at the junction of the precast plate and the basement exterior wall, which ensures sealing and prevents soil or water seepage, greatly ensuring the waterproof effect of underground projects. Setting the transition slope as triangular not only ensures the tightness of the sealing, but also increases the angle of the inside and outside corners. Attached Figure Description

[0020] Figure 1 This is a plan view of the present invention;

[0021] Figure 2 This is the front elevation view of the present utility model;

[0022] Figure 3 This is a side elevation view of the present invention.

[0023] In the diagram: 1-Concrete exterior wall, 2-Post-cast strip, 3-Concrete slab, 4-Fastening mechanism, 401-Straight steel bar, 402-Hanging bar, 403-Transition slope, 5-Waterproof layer. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Example 1

[0025] like Figures 1 to 3As shown, a novel, convenient, and efficient precast post-pouring strip sealing plate includes a concrete exterior wall 1 and a post-pouring strip 2 already set between the concrete exterior walls 1. The feature is that it also includes a concrete slab 3 set outside the post-pouring strip 2, and a fastening mechanism 4 set between the post-pouring strip 2 and the concrete slab 3.

[0026] like Figures 1 to 3 As shown, the fastening mechanism 4 includes a straight steel bar 401 installed in the post-pouring strip 2 and a hanging bar 402 installed in the concrete slab 3.

[0027] like Figures 1 to 3 As shown, the positions and numbers of straight steel bars 401 and hanging bars 402 correspond. The ends of straight steel bars 401 and hanging bars 402 are fixedly connected by welding. By aligning the positions of straight steel bars 401 and hanging bars 402 and fixing them by welding, it has significant advantages in terms of structural stability, construction efficiency and long-term reliability. The straight steel bars 401 are horizontally welded to the hanging bars 402 to form a rigid connection frame. The measured lateral bearing capacity is increased by 60%, while the traditional binding method only increases it by 30%. Moreover, the welded joints uniformly transfer the load, which can avoid local stress concentration and prevent the concrete slab 3 from cracking due to backfill soil pressure or groundwater pressure. This improves the overall stability of the post-cast strip sealing plate. The hanging bars 401 can not only play a lifting role during installation, but also be welded to the straight steel bars after installation as a tie bar to prevent the structure from overturning.

[0028] This utility model is highly applicable. Even when the basement has a high floor height, it can still meet the sealing requirements. Reinforcement can be completed simply by stacking precast slabs layer by layer. It has a low cost, as the precast slabs are made of C30 concrete, which is cheaper than steel plates. It is convenient to manufacture and construct. The formwork is prefabricated in advance, making the manufacturing process simple. The concrete slabs are equipped with lifting bars, making hoisting convenient and quick. The sealing effect is significant. The concrete and waterproof mortar seal tightly, making it difficult for soil to seep in and preventing water from entering. The effect is significant, further enhancing the waterproofing effect of weak parts of the post-cast strip. It has high safety. Because straight steel bars are welded inside, the precast slabs can be prevented from tipping over during installation, resulting in better safety and stability.

[0029] Two C12 U-shaped hanging bars 402 are pre-embedded in each concrete slab 3. The two hanging bars 402 are distributed vertically and centered. The straight steel bar 401 is a C12 straight steel bar.

[0030] Furthermore, the spacing between the two hanger bars 402 is 750mm, the U-shaped hanger bars 402 are 16cm wide and 15cm high, and 3cm are exposed on the slab surface, ensuring that the installation does not affect the reinforcement of the post-pouring strip. The straight reinforcement bars are used for effective fixing after the precast slab is installed. This utility model solves the pain points of easy displacement and leakage of traditional post-pouring strip sealing plates through rigid connection, rapid installation and long-term sealing. It is especially suitable for high-requirement scenarios such as basements of high-rise buildings and subway tunnels, and has both advanced technology and economy. Example 2

[0031] like Figures 1 to 2 As shown, the fastening mechanism 4 also includes transition slopes 403 set on both sides of the concrete slab 3. The cross-sectional shape of the transition slope 403 is a right triangle. The material of the transition slope 403 is M10 waterproof mortar. The waterproof mortar is used to make a sloping joint at the junction of the precast slab and the basement exterior wall, which ensures the sealing and prevents soil or water seepage, greatly ensuring the waterproof effect of the underground project. Setting the transition slope as a triangle not only ensures the tightness of the sealing, but also increases the angle of the inside and outside corners.

[0032] like Figure 1 As shown, a waterproof layer 5 is provided on the outside of the concrete slab 3. The waterproof layer 5 covers the outside of the concrete slab 3 and the transition slope 403. The waterproof layer 5 extends to the joint of the post-cast strip and forms a double seal with the transition slope, which reduces the water seepage rate of the post-cast strip sealing structure by 95%. Moreover, the waterproof material of the waterproof layer 5 is resistant to ultraviolet rays and acid and alkali, adapts to complex underground environments, and can extend the maintenance cycle to 10 years.

[0033] The concrete slab 3 is a precast slab. Each concrete slab 3 has a single-layer bidirectional steel mesh inside. Adjacent concrete slabs 3 are connected by tongue and groove assembly. By setting the concrete slab 3 on the outside of the post-pouring strip 2, the concrete slab 3 can further enhance the hardness of the wall. The concrete slab 3 is also cheaper than steel plates and can be reused, reducing the overall project cost. Setting a single-layer bidirectional steel mesh inside the concrete slab 3 can further improve the strength and compressive load resistance of the concrete slab 3.

[0034] Taking a 6m high basement as an example, it consists of four C30 precast concrete slabs, each measuring 1200mm*1500mm*120mm, and is equipped with a single layer of bidirectional C8*200 steel mesh inside.

[0035] Furthermore, concrete slab 3 can be made of fiber-reinforced precast concrete or lightweight aerated concrete precast slab. The fiber-reinforced precast concrete slab incorporates steel fibers or polypropylene fibers, which increases the flexural strength by 30%, reduces the risk of cracking during transportation and installation, and the fibers can disperse stress concentration, making it suitable for projects with frequent vibration or complex geological conditions. It can also reduce the thickness of the slab, reduce the weight of a single piece, reduce transportation costs, and reduce construction difficulty. Aerated concrete precast slab has the characteristics of good heat insulation, making it suitable for areas with large temperature differences. It is also easy to process, can be cut and drilled on-site, and is compatible with irregular post-pouring strips.

[0036] The working principle of this utility model is as follows:

[0037] S1. Use templates to precast this concrete slab. It is equipped with hanging bars and single-layer bidirectional C8*200 distribution bars. Pay attention to the specifications and positioning of the hanging bars. The hanging bars are centered at the top and bottom with a spacing of 750mm. The hanging bars, i.e., U-shaped bars, are 16cm wide and 15cm high, with 3cm exposed on the slab surface. Ensure that the installation does not affect the reinforcement of the post-cast strip. The concrete can be lifted only when the concrete strength reaches 75%.

[0038] S2. During installation, use a lifting tool to lift the first precast slab with a lifting rod, with one side of the lifting rod facing inward, and slowly place it on the slab, with both sides close to the outer wall and centered.

[0039] S3. After placement, weld one end of two straight steel bars to the hanging bar and the other end to a horizontal C12 straight steel bar parallel to the wall.

[0040] S4. After completion, the reinforcement steps of the first precast slab can be repeated (the tongue and groove correspond to each other, and the bottom of the first slab and the top of the last slab do not need to be tongue and grooved).

[0041] S5. After installation and reinforcement, use M10 waterproof mortar to create a sloping transition at the junction of the precast slab and the exterior wall, and apply a waterproof layer to the outside.

[0042] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A novel, convenient, and efficient precast post-cast strip sealing plate, comprising a concrete exterior wall (1) and a post-cast strip (2) already set between the concrete exterior walls (1), characterized in that: It also includes a concrete slab (3) disposed on the outside of the post-cast strip (2), and a fastening mechanism (4) disposed between the post-cast strip (2) and the concrete slab (3). The fastening mechanism (4) includes a straight steel bar (401) set in the post-pouring strip (2) and a lifting bar (402) set in the concrete slab (3). Two C12 U-shaped lifting bars (402) are pre-embedded in each concrete slab (3). The two lifting bars (402) are distributed vertically and centrally. The straight steel bar (401) is a C12 straight steel bar.

2. The novel convenient and efficient precast post-pouring strip sealing plate according to claim 1, characterized in that: The positions and numbers of the straight steel bars (401) and the hanging bars (402) correspond to each other, and the ends of the straight steel bars (401) and the ends of the hanging bars (402) are fixedly connected by welding.

3. The novel convenient and efficient precast post-pouring strip sealing plate according to claim 1, characterized in that: The fastening mechanism (4) also includes transition slopes (403) set on both sides of the concrete slab (3). The cross-sectional shape of the transition slope (403) is a right triangle, and the material of the transition slope (403) is M10 waterproof mortar.

4. The novel convenient and efficient precast post-pouring strip sealing plate according to claim 3, characterized in that: A waterproof layer (5) is provided on the outside of the concrete slab (3), and the waterproof layer (5) covers the outside of the concrete slab (3) and the transition slope (403).

5. A novel, convenient, and efficient precast post-pouring strip sealing plate according to claim 1, characterized in that: The concrete slab (3) is a precast slab, and each concrete slab (3) is provided with a single layer of bidirectional steel mesh inside. Adjacent concrete slabs (3) are connected by tongue and groove assembly.

Images