Basement roof with anti-permeable root penetration resistant composite drainage board

Abstract

The utility model provides a basement roof is with anti -permeation and prevents root to puncture composite drainage board, including a plurality of recessed holes are equipped with on the plate body, recessed hole bottom end protrudes from the plate body and forms the boss, the boss is the circular table state, is provided with a plurality of triangle section reinforcing ribs along the circumference in the boss outside wall, still including a plurality of convex small dots are seted up in recessed hole side in the plate body. This technical scheme can guarantee the function outside anti -permeation drainage, and the triangle section reinforcing rib of circular table state boss forms rigid support, can resist the radial extrusion of root system, and the surface convex small dot lets root system unable to completely adhere to the plane, and from one dot slides to another dot, instead of continuously in one direction and goes deep, thereby reduces the adhesion of root system, and exerts force, thereby prevents root system and continuously downwardly extending and penetrating the waterproof layer under the drainage board.

Description

Technical Field

[0001] This utility model relates to the field of drainage boards, and in particular to a composite drainage board for basement roof slabs that is impermeable and prevents root penetration. Background Technology

[0002] With the deepening development and utilization of urban underground space, basement roof slabs have gradually evolved from simple structural load-bearing components into multifunctional space carriers that integrate greening, traffic flow, and landscaping. However, this also places stringent requirements on the drainage, seepage prevention, and root penetration resistance of the roof slabs. As the core component of the basement roof drainage system, the drainage board's primary function is to create an elevated water-conducting channel between the waterproofing layer and the soil cover layer, quickly draining rainwater and irrigation water that has seeped into the soil, eliminating hydrostatic pressure on the surface of the waterproofing layer, and preventing cracking and leakage caused by water accumulation. However, in greening scenarios, the growth characteristics of plant roots pose a serious threat to the drainage board and the underlying waterproofing layer. The roots of deep-rooted trees and shrubs generate strong radial compressive forces during their growth, easily penetrating the geotextile filter layer, drainage board, core board plane, and splicing gaps, thereby damaging the waterproofing layer, causing basement leakage, and seriously affecting the structural safety and functionality of the building. Utility Model Content

[0003] To achieve the above objectives, the present invention adopts the following technical solution: The basement roof slab uses a seepage-resistant and root-penetration-proof composite drainage board, which includes a number of recessed holes on the board body, with the bottom of the recessed holes protruding from the board body to form a boss. The boss is frustum-shaped, and a number of triangular cross-section reinforcing ribs are provided along the circumference of the outer wall of the boss. The board body also includes a number of raised small dots on the side of the recessed holes.

[0004] Preferably, the edges of the boss are rounded.

[0005] Preferably, the connection between the plate and the boss or reinforcing rib is an arc connection.

[0006] Preferably, the plate thickness is 3~4mm and the boss height is 10~30mm.

[0007] Preferably, the bosses are spaced 10-12mm apart.

[0008] Preferably, the protrusions are evenly distributed in a plum blossom pattern, whereby the evenly distributed plum blossom pattern means that the line connecting the centers of any three adjacent protrusions forms an equilateral triangle.

[0009] Preferably, the raised dots are evenly distributed in a plum blossom pattern, whereby the even plum blossom pattern means that the line connecting the centers of any three adjacent raised dots forms an equilateral triangle.

[0010] Preferably, the triangular cross-section has 2 to 4 reinforcing ribs.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In addition to ensuring the function of seepage prevention and drainage, the triangular cross-section reinforcing ribs of the frustum-shaped boss form a rigid support, which can resist the radial extrusion force of the root system. At the same time, the small raised dots on the surface prevent the root system from completely adhering to the plane, allowing it to slide from one dot to another instead of continuously penetrating in one direction, thereby reducing the adhesion and force of the root system and preventing the root system from continuously extending downward and penetrating the waterproof layer under the drainage board. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 This is a partially enlarged structural diagram of the boss side of Embodiment 1 of this utility model; Figure 3 This is a partially enlarged structural diagram of the concave hole side of Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the concave hole arrangement structure of Embodiment 1 of this utility model; Labeling explanation: 1-plate body; 2-recessed hole; 3-bore; 4-reinforcing rib; 5-small dot. Detailed Implementation

[0013] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings: The basement roof slab uses a seepage-resistant and root-penetration-proof composite drainage board, which includes a board body 1 with several recessed holes 2. The bottom of the recessed holes 2 protrudes from the board body 1 to form a boss 3. The boss 3 is frustum-shaped. Several triangular cross-section reinforcing ribs 4 are provided along the circumference of the outer wall of the boss 3. The board body 1 also includes several raised small dots 5 on the side of the recessed holes 2.

[0014] The bottom of the recessed hole protrudes outward to form a support column. This not only protects the underlying waterproof layer but also significantly increases the gap between the drainage board and the concrete base layer, making the drainage channel smoother and improving drainage efficiency. The truncated cone distributes the upper load to the bottom base surface, and the triangular cross-section reinforcing ribs surrounding the truncated cone greatly enhance its bending and shear resistance, preventing it from being flattened or deformed under long-term high pressure. The raised dots increase the friction between the board and the geotextile (or base layer) above, making the geotextile fit better and less prone to shifting on the smooth surface of the drainage board. This prevents soil particles from clogging the drainage channel and ensures the excellent seepage prevention and drainage function of the drainage board. For installation scenarios with greening requirements, the robust structure formed by the truncated cone and reinforcing ribs also makes it difficult for plant roots to penetrate. At the same time, the raised dots prevent the roots from completely adhering to the plane, reducing root attachment and force. The roots slide from one dot to another instead of continuously penetrating in one direction, thus preventing the roots from continuously extending downward and penetrating the waterproof layer under the drainage board.

[0015] The drainage board in this solution is made of high-density polyethylene (HDPE). Alternatively, it can be made of asphalt-based HDPE with added chemical root inhibitors, or HDPE with a dense physical layer, such as composite copper-based polyethylene. This further enhances its root-penetration resistance.

[0016] Preferably, the edges of the boss 3 are rounded.

[0017] Preferably, the connection between the plate 1 and the boss 3 and the reinforcing rib 4 is an arc connection.

[0018] Right-angled edges are prone to stress concentration under loads (such as soil pressure and root squeezing pressure), leading to cracking or fatigue failure of the boss edge. Rounded corner design can disperse stress over a larger area, extending the fatigue life of the boss and making it less prone to structural damage under long-term cyclic loads (such as vehicle rolling and soil settlement). When the root system comes into contact with the boss edge, the rounded transition of the corner can disperse the concentrated squeezing pressure over a larger contact area, avoiding localized cracking caused by the root system clamping and exerting force at the right-angled edge.

[0019] Preferably, the thickness of plate 1 is 3~4mm, and the height of boss 3 is 10~30mm.

[0020] Preferably, the bosses 3 are spaced 10~12mm apart.

[0021] Preferably, the protrusions 3 are evenly distributed in a plum blossom pattern, meaning that the line connecting the centers of any three adjacent protrusions 3 forms an equilateral triangle.

[0022] The plum blossom-shaped distribution forms an equilateral triangle by connecting the centers of adjacent protrusions. The gaps between the protrusions are interconnected in multiple directions, increasing drainage efficiency. Furthermore, the mechanical stability of the equilateral triangle allows the plum blossom-shaped array to withstand greater soil pressure, ensuring the service life of the drainage board. At the same time, the dense array of protrusions guides the root system to wind around between the protrusions, preventing it from penetrating the plane of the drainage board vertically.

[0023] Preferably, the raised dots 5 are evenly distributed in a plum blossom pattern, whereby the even plum blossom pattern means that the line connecting the centers of any three adjacent raised dots 5 forms an equilateral triangle.

[0024] Preferably, the reinforcing ribs 4 with triangular cross sections are provided with 2 to 4.

[0025] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A waterproof and root-penetration-resistant composite drainage board for basement roof slabs, comprising a board body (1), characterized in that: The plate (1) is provided with several recessed holes (2), the bottom end of the recessed holes (2) protrudes from the plate (1) to form a boss (3), the boss (3) is frustum-shaped, and several reinforcing ribs (4) with triangular cross sections are provided along the circumference on the outer wall of the boss (3), and the plate (1) is also provided with several raised small dots (5) on the side of the recessed holes (2).

2. The anti-seepage and root-penetration-proof composite drainage board for basement roof slabs as described in claim 1, characterized in that: The edge of the boss (3) is rounded.

3. The anti-seepage and root-penetration-proof composite drainage board for basement roof slabs as described in claim 1, characterized in that: The connection between the plate (1) and the boss (3) and the reinforcing rib (4) is an arc connection.

4. The anti-seepage and root-penetration-proof composite drainage board for basement roof slabs as described in claim 1, characterized in that: The thickness of the plate (1) is 3~4mm, and the height of the boss (3) is 10~30mm.

5. The anti-seepage and root-penetration-proof composite drainage board for basement roof slabs as described in claim 1, characterized in that: The bosses (3) are spaced 10~12mm apart.

6. The anti-seepage and root-penetration-proof composite drainage board for basement roof slabs as described in claim 1, characterized in that: The protrusions (3) are evenly distributed in a plum blossom pattern. The evenly distributed plum blossom pattern means that the line connecting the centers of any three adjacent protrusions (3) is an equilateral triangle.

7. The anti-seepage and root-penetration-proof composite drainage board for basement roof slabs as described in claim 1, characterized in that: The raised small dots (5) are evenly distributed in a plum blossom pattern. The evenly distributed plum blossom pattern means that the line connecting the centers of any three adjacent raised small dots (5) forms an equilateral triangle.

8. The anti-seepage and root-penetration-proof composite drainage board for basement roof slabs as described in claim 1, characterized in that: There are 2 to 4 reinforcing ribs (4) for the triangular cross section.

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