Retaining wall construction system and method

Abstract

This application belongs to the field of building technology, specifically relating to a retaining wall construction system based on the underground wall of a building, including a retaining wall and a drainage ditch. The retaining wall is located on the outside of the underground wall, with a polystyrene board between the retaining wall and the underground wall. Both the outer surfaces of the retaining wall and the underground wall have waterproof layers. The top slab of the underground wall extends towards the retaining wall, and a foam plastic rod is installed between the top of the retaining wall and the top slab. The drainage ditch is located at the connection between the top of the retaining wall and the top slab. This retaining wall construction system, where the extended section of the underground wall's top slab covers the retaining wall and is sealed with foam plastic rods for waterproofing, cleverly combines the underground wall and the drainage ditch. This prevents water from the soil from entering the separation point of the two walls, effectively blocking the water's entry and exit points, providing double waterproofing and ensuring that this area does not become a potential seepage risk.

Description

Technical Field

[0001] This application belongs to the field of building technology, specifically relating to a retaining wall construction system and construction method. Background Technology

[0002] With continuous economic development and the expansion of urban construction, numerous new buildings have emerged. This is especially common in mountainous cities, where significant elevation differences often result in individual buildings having road elevations several meters higher than their surroundings. This means one side of a building is buried in the ground while the other side is exposed (above ground level). Buildings constructed near mountains or slopes bear the pressure of the soil on their sides, severely impacting their overall stability and resistance to overturning and sliding. Structural design often requires a concrete retaining wall on the soil-covered side. However, the retaining wall and the basement walls are independent double-wall structures, creating a potential seepage point at the separation point, negatively affecting the building's occupants. Traditional methods include adding a waterproofing layer, but due to various reasons (such as the short lifespan of waterproofing membranes), this cannot permanently solve the problem of basement seepage in sloping buildings. Summary of the Invention

[0003] This application provides a retaining wall construction system and construction method to solve the problem that retaining walls in the prior art cannot permanently solve the problem of water seepage in the basement of buildings on slopes.

[0004] This application provides a retaining wall construction system based on the underground walls of a building, characterized by comprising:

[0005] A retaining wall is located on the outside of the underground wall of the building. A polystyrene board is provided between the retaining wall and the underground wall of the building. Both the outer surfaces of the retaining wall and the underground wall of the building have waterproof layers. The top plate of the underground wall of the building extends towards the retaining wall, and a foam plastic rod is provided between the top of the retaining wall and the top plate.

[0006] A drainage ditch is located at the connection between the top of the retaining wall and the top slab.

[0007] The aforementioned retaining wall construction system covers the extension section of the building's underground wall top slab over the retaining wall and is sealed with foam plastic rods for waterproofing. It cleverly combines the building's underground wall with the drainage ditch, preventing water from the soil from entering the separation point of the two walls. Combined with the waterproof layer, it blocks the water's entry path while clearing the water's exit path, providing double waterproofing and ensuring that this area does not become a seepage hazard. This effectively solves the problem that existing retaining walls cannot permanently solve the seepage problem in the basements of buildings on slopes.

[0008] In one embodiment, the drainage ditch includes a ditch body, the upper surface of which is flush with the upper surface of the top plate, and the ditch body and the top plate are sealed by the waterproof layer.

[0009] In one embodiment, a water collection pipe and a filter layer are arranged inside the ditch.

[0010] In one embodiment, the filter layer includes a medium sand filter layer and a pebble filter layer. The pebble filter layer is located in the ditch and wraps around the water collection pipe. The medium sand filter layer is laid on the pebble filter layer.

[0011] In one embodiment, a wire mesh is provided between the medium sand filter layer and the pebble filter layer.

[0012] In one embodiment, a compacted soil layer is provided above the medium sand filter layer.

[0013] In one embodiment, a clay compacted waterproof layer is provided above the compacted subsoil layer.

[0014] In one embodiment, a layer of crushed bricks is provided below the trench.

[0015] In one embodiment, the junction between the top of the retaining wall and the top slab is sealed with asphalt linseed.

[0016] In one embodiment, the bottom of the underground wall of the building has a retaining wall, and the polystyrene board is located between the retaining wall and the top plate.

[0017] A construction method for a retaining wall structure system, characterized in that:

[0018] S1. Excavate the foundation pit, protect it, and compact it;

[0019] S2. Concrete foundation layer is made and leveled on the ground of the foundation pit, and a section of brick wall is built as a brick formwork to serve as the template for the side wall of the basement of the building.

[0020] S3. Foundation pit cleaning;

[0021] S4. Lay the waterproof layer;

[0022] S5. Reinforcing steel bars shall be tied simultaneously for the basement walls and retaining walls of the building. While tying the steel bars, double-layer cement fiberboard shall be placed between the basement walls and retaining walls as required, with polystyrene board sandwiched inside the double-layer cement fiberboard. Then, the outer formwork shall be arranged.

[0023] S6. The basement walls and retaining walls of the building shall be poured with concrete simultaneously.

[0024] S7. Lay a waterproof layer on the basement walls and retaining walls of the building;

[0025] S8. Use foam plastic rods to elastically fix the gap between the retaining wall and the top slab, and use asphalt linseed to seal the gap at the junction;

[0026] S9. Construct drainage blind ditches at the gaps between the retaining wall and the roof slab.

[0027] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0028] The accompanying drawings in this application are for illustrating preferred embodiments and to facilitate a clear understanding by those skilled in the art of various other advantages and benefits, and should not be construed as limiting the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0029] Figure 1 This is a schematic diagram of a retaining wall construction system in one embodiment of this application.

[0030] Figure 2 This is a schematic diagram of a drainage blind ditch in one embodiment of this application.

[0031] Figure 3 This is a schematic diagram illustrating an application scenario of the retaining wall construction system in this application.

[0032] Figure 4 This is a schematic diagram of the second application scenario of the retaining wall construction system in this application.

[0033] Explanation of icon numbers:

[0034] 1. Underground wall of a building; 2. Retaining wall; 3. Polystyrene board; 4. Drainage ditch; 41. Ditch body; 42. Water collection pipe; 43. Filter layer; 5. Foam plastic rod; 6. Waterproof layer; 7. Top slab; 8. Slope; 9. Covering layer; 10. Revetment. Detailed Implementation

[0035] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0039] Please see Figure 1This application provides a retaining wall construction system, built on the underground wall 1 of a building, and applied to sloping terrain construction. It mainly includes a retaining wall 2 and a drainage ditch 4. The retaining wall 2 is located on the outside of the underground wall 1 (i.e., the side closer to the slope 8) to block the pressure of the slope 8. A polystyrene board 3 is provided between the retaining wall 2 and the underground wall 1, and both the retaining wall 2 and the underground wall 1 have a waterproof layer 6 on their outer surfaces. The top slab 7 of the underground wall 1 extends towards the retaining wall 2, and a foam plastic rod 5 is provided between the top of the retaining wall 2 and the top slab 7. The drainage ditch 4 is located at the connection between the top of the retaining wall 2 and the top slab 7. The aforementioned retaining wall construction system extends from the top slab 7 of the building's underground wall 1 over the retaining wall 2 and is sealed with foam plastic rods 5 for waterproofing, preventing water from directly entering between the two walls. It also cleverly combines the building's underground wall 1 with the drainage ditch 4, which can collect rainwater from the soil (the drainage ditch 4 collects rainwater) to meet the design requirements of sponge cities, while preventing water from the soil from entering the separation point of the two walls. Combined with the waterproof layer, it can block the water's entry point and clear the water's exit point, providing double waterproofing and ensuring that this area does not become a potential seepage hazard. This effectively solves the problem that existing retaining walls cannot permanently solve the problem of basement seepage in sloping buildings.

[0040] Specifically, polystyrene board 3 can be 100mm thick and acts as a formwork in the double-wall pouring construction, solving the problem of insufficient working surface and difficulty in construction due to the close spacing between the two walls. Basement walls 1 are preferably plaster-free walls, solving the problem of limited construction space.

[0041] In some embodiments, asphalt linseed is used to seal the joint between the top of the retaining wall 2 and the top plate 7 to increase the sealing and waterproofing effect.

[0042] Please see Figure 2 In some embodiments, the drainage ditch 4 includes a ditch body 41, the upper surface of which is flush with the upper surface of the top plate 7. The ditch body 41 and the top plate 7 are sealed by a waterproof layer 6, allowing water to smoothly enter the ditch body 41. The ditch body 41 itself can be made of 100mm thick C20 concrete.

[0043] Specifically, a layer of broken bricks is provided below the trench body 41 to support the trench body 41.

[0044] In a further embodiment, a water collection pipe 42 and a filter layer 43 are arranged inside the ditch 41, which can effectively collect rainwater and meet the design requirements of sponge cities. The water collection pipe 42 can be a non-woven fabric perforated pipe.

[0045] Furthermore, the filter layer 43 includes a medium sand filter layer and a pebble filter layer. The pebble filter layer is located inside the ditch 41 and surrounds the water collection pipe 42. The medium sand filter layer is laid on top of the pebble filter layer. The medium sand particle size of the medium sand filter layer is 1-5 mm, and the pebble particle size of the pebble filter layer is 3-10 mm.

[0046] Furthermore, the addition of wire mesh to the medium sand filter layer and the pebble filter layer solved the problem of cutting corners in actual construction operations, and also met the requirements of the two materials being relatively independent yet appropriately integrated, thus giving full play to the physical properties of the two materials.

[0047] Furthermore, a compacted plain soil layer and a compacted clay waterproof layer can be set above the medium sand filter layer.

[0048] Please see Figure 1 In some embodiments, the bottom of the underground wall 1 of the building has a retaining wall 10, and the polystyrene board 3 is located in the concave surface between the retaining wall 10 and the top plate 7. By setting the retaining wall 10, it plays a final waterproofing role. The width of the retaining wall 10 is generally 300-500mm.

[0049] The construction method of the above-mentioned retaining wall structure system includes the following steps:

[0050] S1. Excavate the foundation pit, protect it, and compact it.

[0051] S2. Concrete pads are laid and leveled on the ground of the foundation pit to prepare for the laying of waterproof layer 6. A section of brick wall is built as a brick formwork to serve as the template for the side wall of the basement wall 1 of the building.

[0052] S3. Foundation pit base cleaning: Use shovels, brooms, and other tools to remove laitance, protrusions, construction waste, etc. from the base surface and drain any standing water. The base surface should be flat, with depressions smoothed with cement mortar, and free of sharp protrusions.

[0053] S4. Lay the waterproof layer 6, add protection and an isolation layer, and leave the ends grouted. This is to prepare for the overlap with the waterproof layer 6 on the retaining wall behind.

[0054] The positioning of waterproof layer 6 includes: a. Marking lines: Mark control lines for laying waterproof layer 6 on the base layer at 920mm intervals; b. Cutting waterproof layer 6 correctly according to the required shape.

[0055] S5. Reinforcement should be tied simultaneously for both the basement wall 1 and the retaining wall 2. While tying, double-layered cement fiberboard should be placed between the basement wall 1 and the retaining wall 2, with polystyrene board sandwiched inside. Then, the outer formwork should be installed. Using double-layered cement fiberboard with polystyrene board sandwiched inside as the inner formwork for both walls reduces construction steps and shortens the construction period.

[0056] S6. Concrete pouring for both the basement wall 1 and retaining wall 2 is carried out simultaneously using a truck-mounted concrete pump. The basement wall 1 is preferably a non-plastered wall. Due to the small distance between the walls in the double-wall structure, the stability of the support system cannot be effectively guaranteed, and the construction of the exterior wall between the two concrete walls is difficult, making two separate formwork erections impossible. Using a truck-mounted concrete pump to pour concrete for each wall simultaneously effectively solves the above problems.

[0057] S7. Lay a waterproof layer 6 on the basement walls 1 and retaining walls 2 of the building.

[0058] S8. Use foam plastic rods 5 to elastically fix the gap between the retaining wall 2 and the top plate 7, and use asphalt linseed to seal the gap at the junction.

[0059] S9. Construct a drainage ditch 4 at the gap between the retaining wall 2 and the top slab 7.

[0060] In summary, the retaining wall construction system provided in this application has the following technical advantages:

[0061] 1. The interior wall (underground wall 1 of the building) and the drainage ditch 4 are cleverly combined. This can collect rainwater from the soil to meet the design requirements of a sponge city (because the soil-covered area is generally a landscape planting area, rainwater will soak the plant roots for a long time after infiltrating the ground, which will cause the plant roots to rot and die. Setting up the drainage ditch 4 can also ensure that the plants can grow smoothly). At the same time, it can prevent water from the soil from entering the separation point of the two walls. Combined with the waterproof layer 6, it can block the water's entry path and clear the water's exit path. The double waterproofing ensures that this place will not become a hidden danger of water seepage.

[0062] 2. Combining the drainage blind ditch 4 and the water collection pipe 42 solves the problem of too many construction procedures and overly complicated construction, and also plays a good role in collecting rainwater.

[0063] 3. Adding wire mesh to the medium sand filter layer and the pebble filter layer solves the problem of cutting corners in actual construction operations. It also meets the requirements of the two materials being relatively independent yet properly integrated, giving full play to the physical properties of the two materials.

[0064] 4. A 100mm thick polystyrene board 3 is used between the two walls, which solves the problem of difficulty in construction due to the lack of a working surface when the two walls are too close together.

[0065] 5. Sloping buildings are the most distinctive architectural form in mountainous cities, with one side lower than the mountain road and the other side higher than the mountain road. This application solves the problem of applying sloping buildings in modern architecture, which can combine the ancient architectural features with the needs of modern people, taking the essence and discarding the dross.

[0066] 6. This application can be used not only for buildings on slopes, but also for basement structures in specific situations, such as... Figure 3 In some cases, the building is entirely underground, and the retaining wall cannot extend above ground level due to functional or landscape requirements; for example... Figure 2 In cases where the building is on a slope, the retaining wall cannot protrude above ground level. When a building on a slope or a basement cannot protrude above ground level, there is generally a requirement for a soil cover of at least 1.5 meters.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A retaining wall construction system based on the construction of a building underground wall, characterized in that, include: A retaining wall is located on the outside of the underground wall of the building. A polystyrene board is provided between the retaining wall and the underground wall of the building. Both the outer surfaces of the retaining wall and the underground wall of the building have waterproof layers. The top plate of the underground wall of the building extends towards the retaining wall, and a foam plastic rod is provided between the top of the retaining wall and the top plate. A drainage ditch is located at the connection between the top of the retaining wall and the top slab. The drainage ditch includes a ditch body, the upper surface of which is flush with the upper surface of the top plate, and the ditch body and the top plate are sealed by the waterproof layer; a water collection pipe and a filter layer are arranged in the ditch body; the filter layer includes a medium sand filter layer and a pebble filter layer, the pebble filter layer is located in the ditch body and wraps around the water collection pipe, and the medium sand filter layer is laid on the pebble filter layer; A wire mesh is provided between the medium sand filter layer and the pebble filter layer. A compacted plain soil layer is provided above the medium sand filter layer, and a compacted clay waterproof layer is provided above the compacted plain soil layer. A compacted brick layer is provided below the ditch. The joint between the top of the retaining wall and the top slab is sealed with asphalt linse. The bottom of the underground wall of the building has a sill, and the polystyrene board is located between the sill and the top plate.

2. A construction method for the retaining wall structure system as described in claim 1, characterized in that: S1. Excavate the foundation pit, protect it, and compact it; S2. Concrete foundation layer is made and leveled on the ground of the foundation pit, and a section of brick wall is built as a brick formwork to serve as the template for the side wall of the basement of the building. S3. Foundation pit cleaning; S4. Lay the waterproof layer; S5. Reinforcing steel bars shall be tied simultaneously for the basement walls and retaining walls of the building. While tying the steel bars, double-layer cement fiberboard shall be placed between the basement walls and retaining walls as required, with polystyrene board sandwiched inside the double-layer cement fiberboard. Then, the outer formwork shall be arranged. S6. The basement walls and retaining walls of the building shall be poured with concrete simultaneously. S7. Lay a waterproof layer on the basement walls and retaining walls of the building; S8. Use foam plastic rods to elastically fix the gap between the retaining wall and the top slab, and use asphalt linseed to seal the gap at the junction; S9. Construct drainage blind ditches at the gaps between the retaining wall and the roof slab.

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