Anti-sagging drip and construction method thereof for building exterior wall

By installing baffles and steel reinforcement layers around the drainage slope, the problems of drainage slope subsidence and soil erosion were solved, and the stability and durability of the structure were improved.

CN121161865BActive Publication Date: 2026-07-21CHINA CONSTR EIGHTH ENG DIV CORP LTD ZHEJIANG CONSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA CONSTR EIGHTH ENG DIV CORP LTD ZHEJIANG CONSTR CO LTD
Filing Date
2025-11-05
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing drainage slopes are prone to subsidence or cracking during use, leading to soil erosion and affecting the structural stability and lifespan of buildings.

Method used

Multiple first and second baffles are used to form a foundation pit, which is then filled with soil. Combined with a steel reinforcement layer and connectors, a subsidence-proof drainage structure is formed. The structural stability is improved by reinforcing plates and steel reinforcement layers to prevent soil erosion.

Benefits of technology

It effectively prevents soil erosion beneath the drainage slope, avoids hollowing out, and improves the structural stability and service life of the drainage slope.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of for building outer wall and its construction method of anti-sinking gutter, the anti-sinking gutter includes: multiple first baffle, along the outer wall of multiple surface peripheral interval arrangement, each first baffle is vertically supported to ground and one end is vertically connected to corresponding side outer wall;Multiple second baffle, it is arranged in the outer periphery of multiple first baffle, each second baffle is vertically supported to ground, and multiple first baffle on corresponding side outer wall is connected in series, adjacent second baffle is connected by connecting piece, multiple second baffle and the outer wall of multiple surface are arranged to form foundation pit groove, and the soil layer is filled in the foundation pit groove;Reinforcing layer is connected at the top of foundation pit groove;Gutter slope, batter pouring is arranged at the top of reinforcing layer, and the stability of gutter is improved by setting the anti-sinking gutter.
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Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a drainage system for preventing subsidence of building exterior walls and its construction method. Background Technology

[0002] A drainage slope is an sloping section of the outdoor ground that intersects perpendicularly with the plinth of an exterior wall. It is used to drain rainwater and protect the foundation from erosion. Drainage slopes are typically made of brick or concrete. The purpose of a drainage slope is to allow water to drain quickly from the ground near the plinth of the building's exterior walls, prevent dripping from the eaves from eroding the soil around the walls, reduce the possibility of water damage to the walls and foundation, protect the walls and foundation, and extend the building's lifespan.

[0003] Currently, before constructing a drainage slope, the ground around the building walls is usually compacted. The drainage slope is then poured directly onto the compacted ground. However, after the drainage slope is constructed, there is a lack of protective measures at its edges. As rainwater drips down the slope over a long period of time, grooves can easily form where the rainwater drips. With prolonged use, the soil beneath the drainage slope can easily flow into the grooves, causing the area below the drainage slope to become hollow, making the drainage slope prone to subsidence or cracking. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art and provide a subsidence prevention drainage system for building exterior walls and its construction method, which prevents the soil under the drainage slope from flowing to the surrounding areas and avoids the phenomenon of hollowing out under the drainage slope; thereby effectively preventing the drainage slope from cracking or subsiding.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is a subsidence prevention drainage system for building exterior walls, comprising:

[0006] Multiple first baffles are arranged at intervals along the outer perimeter of multiple exterior walls. Each first baffle is vertically supported to the ground and one end is vertically connected to the corresponding side exterior wall.

[0007] Multiple second baffles are arranged around the periphery of multiple first baffles. Each second baffle is vertically supported to the ground and connects multiple first baffles on the corresponding side wall. Adjacent second baffles are connected by connectors. Multiple second baffles and multiple sides of the outer wall form a ring of foundation pit. The foundation pit is filled with a soil layer.

[0008] A reinforcing steel layer is connected to the top of the foundation pit trench;

[0009] The drainage slope is poured on top of the reinforced concrete layer.

[0010] A further improvement of the present invention for preventing subsidence and water drainage on building exterior walls is that the connector includes a connecting plate located at the corner of two adjacent exterior walls. The connecting plate is vertically arranged and supported to the ground. One end of the connecting plate is connected to a first angle steel, which is fastened to the external corner of two adjacent exterior walls. The other end of the connecting plate is connected to a second angle steel, which abuts against the internal corner of two adjacent second baffles.

[0011] A further improvement of the present invention for the anti-sinking drainage system of building exterior walls is that the anti-sinking drainage system further includes multiple reinforcing plates respectively set for each side of the exterior wall. Each reinforcing plate is engaged with multiple first baffles on the corresponding side of the exterior wall, dividing the foundation pit into a grid. Each first baffle has a first engaging groove at the top center, and multiple first engaging grooves on multiple first baffles on the same side of the exterior wall are located in a straight line. The bottom section of the reinforcing plate is provided with multiple second engaging grooves at intervals for the multiple first engaging grooves to engage one-to-one.

[0012] A further improvement of the present invention for the anti-sinking drainage of building exterior walls is that the steel reinforcement layer includes multiple horizontal bars and multiple vertical bars. The top of multiple first baffles on the corresponding side exterior wall is provided with multiple rows of first placement grooves for accommodating multiple horizontal bars in a one-to-one correspondence. The top of the reinforcing plate on the corresponding side exterior wall is provided with multiple second placement grooves for accommodating multiple vertical bars in a one-to-one correspondence. Each vertical bar is connected to multiple horizontal bars.

[0013] A further improvement of the present invention for preventing subsidence and water leakage on building exterior walls is that each of the first baffles is connected to a buried plate at the end closest to the exterior wall, and the buried plate is pre-embedded in the exterior wall.

[0014] A further improvement of the present invention for preventing subsidence and water leakage on building exterior walls is that the embedded plate is connected with reinforcing ribs, and the reinforcing ribs are connected to the steel reinforcement cage of the exterior wall.

[0015] A further improvement of the present invention for preventing subsidence and water leakage on building exterior walls is that each of the first baffles is connected to a first bolt at the end relatively away from the exterior wall, and the second baffle is provided with a connecting hole for the first bolt to pass through and connect.

[0016] A further improvement of the present invention for preventing sinking of building exterior walls is that each of the first baffles is a right-angled trapezoid, with the hypotenuse of the first baffle facing upward and tilting downward from the end closer to the exterior wall to the end farther away from the exterior wall.

[0017] A construction method for an anti-sinking drainage system for building exterior walls, comprising the following steps:

[0018] Step 1: Provide the above-mentioned anti-sinking drainage system for the exterior walls of buildings;

[0019] Step 2: Arrange multiple first baffles at intervals on the outer perimeter of multiple exterior walls, so that each first baffle is vertically supported to the ground and one end is vertically connected to the corresponding side exterior wall;

[0020] Step 3: Surround multiple second baffles around multiple first baffles, so that each second baffle is vertically supported to the ground, and connect multiple first baffles on the corresponding side outer wall in series, and connect adjacent second baffles using connectors;

[0021] Step 4: Fill the soil layer into the foundation pit formed by the multiple second baffles and the multiple outer walls;

[0022] Step 5: Connect the reinforcing steel layer at the top of the foundation pit;

[0023] Step 6: Pour concrete on top of the steel reinforcement layer to form a drainage slope.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] The foundation pit is formed by enclosing the first and second baffles to fill the soil, thus preventing the soil in the foundation pit from flowing outwards and thus preventing the bottom of the drainage slope from becoming hollow. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the concrete pouring process for the anti-sinking drainage system used in the exterior walls of buildings according to the present invention.

[0028] Figure 2 This is a schematic diagram of the unpoured concrete for the anti-sinking drainage system used in the exterior walls of buildings according to the present invention.

[0029] Figure 3 This is a cross-sectional view of the anti-sinking drainage system for building exterior walls according to the present invention.

[0030] Figure 4 This is a detailed drawing of the first baffle structure of the anti-sinking drainage system for building exterior walls according to the present invention.

[0031] Figure 5 This is a detailed structural drawing of the reinforcing plate used in the anti-sinking drainage system for building exterior walls according to the present invention.

[0032] Figure 6 This is a detailed structural drawing of the connecting plate used in the anti-sinking drainage system for building exterior walls according to the present invention.

[0033] In the diagram: 1. Exterior wall; 2. Ground; 3. Drainage slope; 4. First baffle; 5. Second baffle; 6. Connecting plate; 7. Reinforcing plate; 8. Horizontal reinforcement; 9. Longitudinal reinforcement; 10. Soil layer; 11. Embedded plate; 12. Reinforcing rib; 13. First bolt; 14. First snap-fit ​​groove; 15. First placement groove; 16. Second snap-fit ​​groove; 17. Second placement groove; 18. First angle steel; 19. Second angle steel; 20. First stiffening plate; 21. Second stiffening plate; 22. V-groove. Detailed Implementation

[0034] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0035] The following description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed explanation of the present invention for preventing subsidence and its construction method on building exterior walls.

[0036] Please see Figures 1-6 As shown, the anti-sinking drainage system used for building exterior walls includes:

[0037] Multiple first baffles 4 are arranged at intervals along the outer perimeter of multiple exterior walls 1. Each first baffle 4 is vertically supported to the ground 2 and one end is vertically connected to the corresponding side exterior wall 1.

[0038] Multiple second baffles 5 are arranged around the perimeter of multiple first baffles 4. Each second baffle 5 is vertically supported to the ground 2 and connects multiple first baffles 4 on the corresponding side outer wall 1. Adjacent second baffles 5 are connected by connectors. Multiple second baffles 5 and multiple outer walls 1 form a ring of foundation pit, which is filled with soil layer 10.

[0039] A layer of reinforcing steel is connected to the top of the foundation pit.

[0040] Drainage slope 3 is poured on top of the reinforced concrete layer.

[0041] The second baffle 5 and the multi-faceted outer wall 1 are used to form a foundation pit for filling with soil, so as to prevent the soil in the foundation pit from flowing outwards and thus prevent the bottom of the drainage slope 3 from becoming hollow.

[0042] Preferably, the connector includes a connecting plate 6 located at the corner of two adjacent exterior walls 1. The connecting plate 6 is vertically arranged and supported to the ground 2. One end of the connecting plate 6 is connected to a first angle steel 18, which is fastened to the external corner of two adjacent exterior walls 1. The other end of the connecting plate 6 is connected to a second angle steel 19, which abuts against the internal corner of two adjacent second baffles 5.

[0043] Specifically, the first angle steel 18 is connected to the connecting plate 6 at its external corner, the second angle steel 19 is connected to the connecting plate 6 at its internal corner, a first stiffening plate 20 is connected between the two outer sides of the two flanges of the first angle steel 18 and the connecting plate 6, and a second stiffening plate 21 is connected between the two inner sides of the two flanges of the second angle steel 19 and the connecting plate 6.

[0044] By setting the first stiffening plate 20 and the second stiffening plate 21, the connection stability of the first angle steel 18 and the second angle steel 19 is improved.

[0045] Specifically, the flange of the first angle steel 18 is connected to the outer wall 1 by expansion bolts, and the flange of the second angle steel 19 is connected to the second baffle 5 by second bolts.

[0046] Preferably, the anti-sinking drainage also includes multiple reinforcing plates 7 respectively provided on each side of the outer wall 1. Each reinforcing plate 7 is engaged with multiple first baffles 4 on the corresponding side of the outer wall 1, dividing the foundation pit into a grid. Each first baffle 4 has a first engaging groove 14 at the top center. The multiple first engaging grooves 14 on the multiple first baffles 4 on the same side of the outer wall 1 are located in a straight line. The bottom section of the reinforcing plate 7 is provided with multiple second engaging grooves 16 at intervals for the multiple first engaging grooves 14 to engage one-to-one.

[0047] By setting the reinforcing plate 7 in conjunction with multiple first baffles 4, the foundation pit is divided into a grid, and when the soil layer 10 is filled in the subsequent process, the soil is separated into multiple grids, which further improves the stability of the soil layer 10 and prevents the soil in the foundation pit from being lost.

[0048] Specifically, a V-shaped groove 22 is provided at the center of the top of the reinforcing plate 7, and the relatively close ends of the adjacent reinforcing plates 7 abut against each other and are respectively inserted into the two flange grooves of the V-shaped groove 22.

[0049] By setting the V-groove 22, two adjacent reinforcing plates 7 are connected to form a whole, which improves the overall structure and prevents shaking.

[0050] Preferably, the steel reinforcement layer includes multiple horizontal bars 8 and multiple vertical bars 9. The top of the multiple first baffles 4 on the corresponding side outer wall 1 is provided with multiple rows of first placement slots 15 for accommodating the multiple horizontal bars 8 one by one. The top of the reinforcing plate 7 on the corresponding side outer wall 1 is provided with multiple second placement slots 17 for accommodating the multiple vertical bars 9 one by one. Each vertical bar 9 is connected to multiple horizontal bars 8.

[0051] By adding this layer of steel reinforcement, the strength of the drainage slope 3 is improved.

[0052] Specifically, the depth of the first placement groove 15 is greater than the depth of the second placement groove 17. The depths of the first placement groove 15 and the second placement groove 17 satisfy the following condition: when the longitudinal bar 9 is placed in the second placement groove 17, the longitudinal bar 9 is supported on the top of multiple transverse bars 8 on the same side, so that the bars can be tied.

[0053] Preferably, each of the first baffles 4 is connected to an embedded plate 11 at the end closest to the outer wall 1, and the embedded plate 11 is pre-embedded in the outer wall 1.

[0054] By setting the embedded plate 11 to connect the first baffle 4 to the outer wall 1, the connection stability of the first baffle 4 is improved.

[0055] Preferably, the embedded plate 11 is connected to a reinforcing rib 12, which is connected to the steel reinforcement cage of the outer wall 1.

[0056] The reinforcing bars 12 of the embedded plate 11 are connected to the reinforcing cage of the outer wall 1 during the binding stage, and are anchored inside after the concrete of the outer wall 1 is poured, which further improves the connection stability of the embedded plate 11.

[0057] Preferably, each of the first baffles 4 is connected to a first bolt 13 at the end that is relatively far from the outer wall 1, and the second baffle 5 is provided with a connecting hole for the first bolt 13 to pass through and connect.

[0058] The second baffle 5 is mechanically connected to the multiple first baffles 4 by the first bolt 13, which prevents the multiple first baffles 4 from swinging and shaking in the horizontal direction, improves the overall stability, and makes installation and disassembly convenient.

[0059] Preferably, each of the first baffles 4 is a right trapezoid with its hypotenuse facing upward and tilting downward from the end closest to the outer wall 1 to the end furthest from the outer wall 1.

[0060] By setting the first baffle 4 into a right-angled trapezoid, the top surfaces of multiple first baffles 4 naturally form a slope, which can avoid the slope laying process when pouring concrete. After the concrete is poured and solidified, the drainage slope 3 is naturally formed, which improves construction efficiency.

[0061] A construction method for an anti-sinking drainage system for building exterior walls, comprising the following steps:

[0062] Step 1: Provide the above-mentioned anti-sinking drainage system for the exterior walls of buildings;

[0063] Step 2: Arrange multiple first baffles 4 at intervals on the outer perimeter of multiple exterior walls 1, so that each first baffle 4 is vertically supported to the ground 2 and one end is vertically connected to the corresponding side exterior wall 1.

[0064] Step 3: Surround multiple second baffles 5 around multiple first baffles 4, so that each second baffle 5 is vertically supported to the ground 2, and connect multiple first baffles 4 on the corresponding side outer wall 1 in series, and connect adjacent second baffles 5 using connectors.

[0065] Step 4: Fill the soil layer 10 into the foundation pit formed by the multiple second baffles 5 and the multiple outer walls 1;

[0066] Step 5: Connect the reinforcing steel layer at the top of the foundation pit;

[0067] Step 6: Pour concrete on the top of the steel reinforcement layer to form a drainage slope 3.

[0068] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A settling-prevention drainage system for building exterior walls, characterized in that, include: Multiple first baffles are arranged at intervals along the outer perimeter of multiple exterior walls. Each first baffle is vertically supported to the ground and one end is vertically connected to the corresponding side exterior wall. Multiple second baffles are arranged around the periphery of multiple first baffles. Each second baffle is vertically supported to the ground and connects multiple first baffles on the corresponding side wall. Adjacent second baffles are connected by connectors. Multiple second baffles and multiple sides of the outer wall form a ring of foundation pit. The foundation pit is filled with a soil layer. A reinforcing steel layer is connected to the top of the foundation pit trench; The drainage slope is poured on top of the reinforced concrete layer. The connector includes a connecting plate located at the corner of two adjacent exterior walls. The connecting plate is vertically installed and supported to the ground. One end of the connecting plate is connected to a first angle steel, which is fastened to the external corner of two adjacent exterior walls. The other end of the connecting plate is connected to a second angle steel, which abuts against the internal corner of two adjacent second baffles. The anti-sinking drainage slope also includes multiple reinforcing plates corresponding to each side of the exterior wall. Each reinforcing plate is engaged with multiple first baffles on the corresponding side of the exterior wall, dividing the foundation pit into a grid. Each first baffle has a first engaging groove at the top center, and multiple first engaging grooves on multiple first baffles on the same side of the exterior wall are aligned in a straight line. The bottom of the reinforcing plate is spaced apart to allow multiple first engaging grooves to be engaged one-to-one. The steel reinforcement layer includes multiple second slots, and the top of the first baffles on the corresponding side exterior wall is provided with multiple rows of first placement slots for accommodating the multiple horizontal bars. The top of the reinforcing plate on the corresponding side exterior wall is provided with multiple second placement slots for accommodating the multiple vertical bars. Each vertical bar is connected to multiple horizontal bars. Each first baffle is connected to an embedded plate at the end closest to the exterior wall. The embedded plate is pre-embedded in the exterior wall. The embedded plate is connected to a reinforcing bar, which is connected to the steel reinforcement cage of the exterior wall. Each first baffle is connected to a first bolt at the end furthest from the exterior wall. The second baffle has a connecting hole for the first bolt to pass through and connect. Each first baffle is a right trapezoid with its hypotenuse facing upward and tilting downward from the end closest to the exterior wall to the end furthest from the exterior wall.

2. A construction method for an anti-sinking drainage system for building exterior walls, characterized in that, Including the following steps: Step 1: Provide the anti-sinking drainage system for building exterior walls as described in claim 1; Step 2: Arrange multiple first baffles at intervals on the outer perimeter of multiple exterior walls, so that each first baffle is vertically supported to the ground and one end is vertically connected to the corresponding side exterior wall; Step 3: Surround multiple second baffles around multiple first baffles, so that each second baffle is vertically supported to the ground, and connect multiple first baffles on the corresponding side outer wall in series, and connect adjacent second baffles using connectors; Step 4: Fill the soil layer into the foundation pit formed by the multiple second baffles and the multiple outer walls; Step 5: Connect the reinforcing steel layer at the top of the foundation pit; Step 6: Pour concrete on top of the steel reinforcement layer to form a drainage slope.

Citation Information

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