Construction method for early closure of post-casting strips after roof settlement and construction method for closure

Abstract

The present invention belongs to the field of building construction technology, and discloses a method for pre-closing a roof settlement post-casting strip and a closed construction method, comprising: step S1, providing a template, and laying the template at the settlement post-casting strip; step S2, laying a flexible waterproof layer above the template; step S3, laying an isolation layer above the flexible waterproof layer; step S4, pouring fine stone concrete above the isolation layer to form a protective layer, the protective layer covering the settlement post-casting strip area, and the size of the isolation layer is larger than the size of the protective layer. The template performs the first layer of closure on the settlement post-casting strip, and also provides support for the subsequent flexible waterproof layer, isolation layer and protective layer; the flexible waterproof layer can effectively prevent liquids such as rainwater from flowing into the room from the settlement post-casting strip; the protective layer poured with fine stone concrete is used to strengthen the closed structure and enhance the reliability of the closure, and is stronger and more reliable than the hollow pre-closing structure in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a construction method for early sealing of a post-casting strip of roof settlement and a sealing construction method. Background Art

[0002] The height difference of the building structure will cause uneven settlement of the foundation, which will lead to cracks in the building structure. To avoid the occurrence of cracks, the building structure is often divided into several parts so that the settlement of each part is relatively uniform. The interval between the top plates of each part of the building structure is the top plate settlement post-casting strip. The settlement post-casting strip should be formally closed after the settlement of each part is stable. However, if the settlement post-casting strip is not closed, rainwater and debris can easily enter the room through the settlement post-casting strip to form water or mud, which is difficult to clean. Therefore, the settlement post-casting strip needs to be sealed in advance before formal sealing.

[0003] A patent application with application publication number CN 113585351 A discloses a construction method for prefabricating a soil-covering plane settlement post-casting strip in an advanced reverse order and sealing manner, comprising the following steps: reinforcing the bottom formwork and side formwork of the post-casting strip, bonding the cover plate to the post-casting strip with waterproof cement mortar, and installing the cover plate; constructing a waterproof and protective layer; pouring concrete from the reserved pouring port of the cover plate, and sealing the port.

[0004] This method uses a bottom form and a cover plate to pre-close the settlement post-casting zone. Once the conditions for formal closure are met, concrete is poured into the space between the cover plate and the bottom form to increase the strength of the closed structure. However, pre-closing the settlement post-casting zone using only the bottom form and cover plate is unreliable, as the hollow structure between the two is weak and prone to collapse. Summary of the Invention

[0005] The purpose of the present invention is to provide a construction method for early sealing of a post-casting strip of roof settlement and a sealing construction method, wherein the early sealing structure has high strength and high reliability.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The construction method of sealing the roof settlement post-casting strip in advance, where the post-casting strip is located between two structural layers set at the same height, includes:

[0008] Step S1: providing a template and laying the template on the post-settlement pouring zone;

[0009] Step S2: laying a flexible waterproof layer on top of the template;

[0010] Step S3: laying an isolation layer on the flexible waterproof layer;

[0011] Step S4: pouring fine stone concrete on the isolation layer to form a protective layer, the protective layer covers the settlement post-casting zone area, and the size of the isolation layer is larger than that of the protective layer.

[0012] Optionally, the isolation layer includes a first layer and a second layer, and step S3 includes:

[0013] Step S3.1, laying the first layer on the flexible waterproof layer and covering the flexible waterproof layer;

[0014] Step S3.2: Lay the second layer on the first layer, and the second layer covers the settlement post-casting zone area.

[0015] Optionally, the protective layer includes a third layer and a fourth layer, and step S4 includes:

[0016] Step S4.1, laying the third layer on the first layer;

[0017] Step S4.2: The fourth layer is laid on the second layer and covers the settlement post-casting zone area, and the third layer and the fourth layer together cover the flexible waterproof layer area.

[0018] Optionally, the size of the second layer is larger than that of the fourth layer, and at least one edge of the second layer extends above the top surface of the fourth layer.

[0019] Optionally, the size of the fourth layer is larger than the size of the post-settlement cast-in-place zone.

[0020] Optionally, the third layer is flush with the top surface of the fourth layer.

[0021] Optionally, step S2 includes:

[0022] Lay and cover the flexible waterproof layer on the top surface of the structural layer and the formwork.

[0023] Optionally, step S1 includes:

[0024] The formwork is erected on the steel bars extending from the structural layer to the settlement post-casting zone, and the formwork is made flush with the top surface of the structural layer.

[0025] A construction method for sealing a post-casting strip after roof settlement, comprising:

[0026] Implement the above-mentioned construction method of sealing the top plate settlement post-casting strip in advance;

[0027] dismantling of prematurely enclosed structures;

[0028] Pour concrete into the settlement joint to seal the settlement joint.

[0029] Optionally, removing the early closed structure includes:

[0030] Lift the isolation layer, and remove the isolation layer and the protective layer located above the isolation layer;

[0031] Break the flexible waterproof layer to expose the template below the flexible waterproof layer;

[0032] Remove the template.

[0033] Beneficial effects of the present invention:

[0034] The present invention provides a construction method for early closure of the top plate settlement post-casting strip, wherein the template performs the first layer of closure on the settlement post-casting strip, and also provides support for the subsequent flexible waterproof layer, isolation layer and protective layer; the flexible waterproof layer can effectively prevent rainwater and other liquids from flowing into the room from the settlement post-casting strip; the protective layer cast by fine stone concrete is used to strengthen the closed structure and enhance the reliability of the closure, and is stronger and more reliable than the hollow early closed structure in the prior art. At the same time, the isolation layer separates the flexible waterproof layer from the protective layer. After the protective layer is cast, it is tightly connected to the isolation layer. When the early closed structure needs to be dismantled before the settlement post-casting strip is formally closed, it is only necessary to lift the isolation layer first, and then the isolation layer and the protective layer above the isolation layer can be removed together, and then the flexible waterproof layer and the template can be removed.

[0035] The construction method for sealing the post-cast strip after settlement of the top plate provided by the present invention first implements the above-mentioned construction method for sealing the post-cast strip after settlement of the top plate. After the early sealing is completed, the early sealing structure is removed. Finally, concrete is poured at the post-cast strip after settlement to seal the post-cast strip after settlement, thereby ensuring that the post-cast strip after settlement is completely sealed, and the sealing is dense and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the position of the post-cast strip after roof settlement provided by an embodiment of the present invention;

[0037] Figure 2 This is a flow chart of a construction method for sealing a post-casting strip after roof settlement provided by an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the overall steps of a construction method for early sealing of a post-casting strip after roof settlement provided by one embodiment of the present invention;

[0039] Figure 4 It is a schematic diagram of the overall steps of a construction method for early sealing of a post-cast strip after roof settlement provided by another embodiment of the present invention.

[0040] In the picture:

[0041] 100, structural layer; 200, steel bars; 300, post-settlement cast-in-place strip;

[0042] 1. Formwork; 2. Flexible waterproof layer; 3. Isolation layer; 31. First layer; 32. Second layer; 4. Protective layer; 41. Third layer; 42. Fourth layer. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0044] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0047] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0048] The top slab settlement post-cast joint is the gap between the top slabs of the building structure layer. Before the top slab settlement post-cast joint is permanently and formally closed, it must be temporarily closed using the advance closing construction method to prevent rainwater or debris from entering the room through the settlement post-cast joint.

[0049] This embodiment provides a construction method for sealing the top plate settlement post-casting zone in advance, such as Figure 1 As shown, the post-settlement cast-in-place strip 300 is located between two structural layers 100 arranged at the same height. Figure 2 and Figure 3 As shown, the construction method for sealing the top plate settlement post-casting strip in advance includes:

[0050] Step S1, providing a template 1, and laying the template 1 at the settlement post-casting zone 300;

[0051] Step S2: laying a flexible waterproof layer 2 on top of the template 1;

[0052] Step S3, laying an isolation layer 3 on the flexible waterproof layer 2;

[0053] Step S4: pour fine stone concrete on the isolation layer 3 to form a protective layer 4. The protective layer 4 covers the area of ​​the settlement post-casting zone 300, and the size of the isolation layer 3 is larger than that of the protective layer 4.

[0054] During construction, the formwork 1 performs the first layer 31 sealing on the post-settlement grouting strip 300, and also provides support for the subsequent flexible waterproof layer 2, isolation layer 3 and protective layer 4; the flexible waterproof layer 2 can effectively prevent rainwater and other liquids from flowing into the room from the post-settlement grouting strip 300; the protective layer 4 cast by fine stone concrete is used to strengthen the closed structure and enhance the reliability of the closure, and is stronger and more reliable than the hollow pre-sealed structure in the prior art. At the same time, the isolation layer 3 separates the flexible waterproof layer 2 from the protective layer 4. After the protective layer 4 is cast, it is tightly connected to the isolation layer 3. When the pre-sealed structure needs to be dismantled before the post-settlement grouting strip 300 is officially closed, it is only necessary to lift the isolation layer 3 first, and then the isolation layer 3 and the protective layer 4 above the isolation layer 3 can be removed together, and then the flexible waterproof layer 2 and the formwork 1 can be removed.

[0055] Further, if Figure 3 As shown, step S1 includes: erecting the formwork 1 on the steel bars 200 extending from the structural layer 100 to the settlement post-casting zone 300, and making the formwork 1 flush with the top surface of the structural layer 100 to facilitate the subsequent smooth laying of the flexible waterproof layer 2. In this embodiment, the formwork 1 is the same width as the settlement post-casting zone 300, so that the formwork 1 can be laid tightly.

[0056] Furthermore, step S2 includes laying and covering a flexible waterproof layer 2 on the top surface of the structural layer 100 and the formwork 1, thereby providing waterproof protection for the entire building structural layer 100 and the post-settlement strip 300. In this embodiment, the flexible waterproof layer 2 comprises a waterproof membrane, which is spliced ​​using a hot-melt method, and the joints are not easily penetrated by water.

[0057] For example, Figure 4As shown, a groove is also provided on the template 1. When the flexible waterproof layer 2 is laid on the template 1, a rod-shaped or block-shaped tool can be used to press part of the flexible waterproof layer 2 into the groove to fix the position of the flexible waterproof layer 2 and prevent the expansion and contraction nodes of the flexible waterproof layer 2 from being torn.

[0058] Furthermore, the isolation layer 3 includes a first layer 31 and a second layer 32, and the above step S3 includes:

[0059] Step S3.1, laying the first layer 31 on the flexible waterproof layer 2 and covering the flexible waterproof layer 2;

[0060] Step S3.2: Lay the second layer 32 on the first layer 31. The second layer 32 covers the settlement post-casting zone 300. The second layer 32 is smaller than the first layer 31. In this embodiment, the isolation layer 3 comprises plastic sheeting, which is low-cost, easy to lay, and can enhance the waterproof effect.

[0061] exist Figure 3 In the embodiment shown, the second layer 32 is laid on the complete first layer 31. Figure 4 In another embodiment shown, the first layer 31 has two parts. The second layer 32 avoids the settlement post-casting strip 300 area and covers the settlement post-casting strip 300 area. The first layer 31 and the second layer 32 together cover the flexible waterproof layer 2 area.

[0062] Furthermore, if Figure 3 As shown, the first layer 31 is larger than the flexible waterproof layer 2, which can reliably isolate the flexible waterproof layer 2 and the protective layer 4, and prevent the first layer 31 from being slightly displaced and having no isolation effect. In this embodiment, the four sides of the first layer 31 are 500mm wider than the flexible waterproof layer 2.

[0063] Furthermore, the protective layer 4 includes a third layer 41 and a fourth layer 42, and the above step S4 includes:

[0064] Step S4.1, laying the third layer 41 on the first layer 31;

[0065] Step S4.2: The fourth layer 42 is laid on the second layer 32 and covers the settlement post-casting strip 300 area. The third layer 41 and the fourth layer 42 jointly cover the flexible waterproof layer 2 area, so that the flexible waterproof layer 2 area is completely protected by the protective layer 4. At the same time, the third layer 41 protects the flexible waterproof layer 2 area corresponding to the first layer 31, and the fourth layer 42 protects the flexible waterproof layer 2 area corresponding to the second layer 32, including the settlement post-casting strip 300 area, thereby realizing the partitioning of the protective layer 4. When the second layer 32 is lifted, the second layer 32 and the fourth layer 42 protecting the settlement post-casting strip 300 can be removed separately, streamlining the operation area and saving time and effort. For example, the protective layer 4 is cast using C20 fine stone concrete.

[0066] Furthermore, the fourth layer 42 is larger than the area of ​​the settlement post-casting strip 300, ensuring reliable protection for the settlement post-casting strip 300. Furthermore, after the fourth layer 42 is subsequently removed, space is reserved for subsequent operations. In this embodiment, the opposing sides of the fourth layer 42 are each 500 mm wider than the settlement post-casting strip 300.

[0067] Furthermore, the second layer 32 is larger than the fourth layer 42, and at least one edge of the second layer 32 extends above the top surface of the fourth layer 42. This allows a worker to lift the second layer 32 by pulling on the edge of the second layer 32 that extends above the top surface of the fourth layer 42, thereby removing the second layer 32 and the fourth layer 42 located thereon. In this embodiment, both opposing edges of the second layer 32 extend above the top surface of the fourth layer 42, facilitating simultaneous operation by workers on both sides, resulting in greater efficiency and reduced effort. For example, the opposing sides of the second layer 32 are each 500 mm wider than the fourth layer 42.

[0068] Furthermore, the top surfaces of the third layer 41 and the fourth layer 42 are flush, so that the top surface of the protective layer 4 is flat, and has good practicality and aesthetics. In this embodiment, the thickness of the third layer 41 and the fourth layer 42 are both 100 mm.

[0069] This embodiment also provides a roof settlement post-casting strip sealing construction method, comprising:

[0070] Implement the above-mentioned construction method of sealing the top plate settlement post-casting strip in advance;

[0071] dismantling of prematurely enclosed structures;

[0072] Concrete is poured at the settlement post-casting joint 300 to seal the settlement post-casting joint 300.

[0073] First, the above-mentioned construction method of early sealing of the top plate settlement post-casting strip is implemented. After the early sealing is completed, the early sealing structure is removed. Finally, concrete is poured at the settlement post-casting strip 300 to seal the settlement post-casting strip 300, thereby ensuring that the settlement post-casting strip 300 is completely sealed, densely and reliably.

[0074] Furthermore, dismantling the prematurely closed structure includes:

[0075] Lift the isolation layer 3, and remove the isolation layer 3 and the protective layer 4 located above the isolation layer 3;

[0076] Breaking the flexible waterproof layer 2 to expose the template 1 below the flexible waterproof layer 2;

[0077] Remove Template 1.

[0078] By lifting the isolation layer 3, the isolation layer 3 and the protective layer 4 above the isolation layer 3 can be removed together, and then the flexible waterproof layer 2 can be broken and the template 1 can be removed to dismantle the pre-sealed structure, which is simple, convenient, time-saving and labor-saving.

[0079] Furthermore, the above-mentioned steps of pouring concrete at the settlement post-casting strip 300 and blocking the settlement post-casting strip 300 include: roughening the side walls of the settlement post-casting strip 300, washing the two side walls of the settlement post-casting strip 300, setting a bottom mold and a side mold at the settlement post-casting strip 300, the bottom mold closing the bottom opening of the settlement post-casting strip 300, the side mold being attached to the side wall of the settlement post-casting strip 300, and pouring concrete into the space enclosed by the bottom mold and the side mold to form a concrete layer, and the concrete layer blocking the settlement post-casting strip 300. The process and method of blocking belong to the prior art and will not be described here. In this embodiment, the upper surface of the concrete layer is flush with the structural layer 100, which is convenient for subsequent waterproofing construction. For example, the concrete layer is cast using self-compacting micro-expansion anti-seepage concrete, and is vibrated and compacted using a vibrating rod to ensure its strength.

[0080] The roof settlement post-casting strip sealing construction method also includes:

[0081] 12 hours after the concrete layer is poured, cover the concrete layer with plastic film and water it to keep it moist at all times to avoid shrinkage cracks in the concrete layer at an early stage and ensure that it reaches the designed strength.

[0082] A waterproofing membrane and plastic sheeting are laid over the concrete layer. A steel mesh is tied over the plastic sheeting, and a concrete cover is poured to provide reliable waterproofing protection for the post-settlement zone 300. The waterproofing membrane is spliced ​​to the portion remaining after the pre-sealed flexible waterproof layer 2 is removed. The plastic sheeting covers the gap left in the pre-sealed first layer 31. The concrete cover is flush with the surface of the pre-sealed third layer 41. In this embodiment, the steel mesh measures φ4mm*300mm*300mm, and pads are placed at the bottom of the mesh to maintain its levelness. The concrete cover is 100mm thick and is cast using C20 fine aggregate concrete.

[0083] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A construction method for sealing a roof settlement post-casting strip in advance, wherein the settlement post-casting strip (300) is located between two structural layers (100) arranged at the same height, and is characterized in that: include: Step S1, providing a template (1), and laying the template (1) at the settlement post-casting zone (300); Step S2: laying a flexible waterproof layer (2) on top of the template (1); Step S3, laying an isolation layer (3) on top of the flexible waterproof layer (2); Step S4: pouring fine stone concrete on the isolation layer (3) to form a protective layer (4), wherein the protective layer (4) covers the area of ​​the settlement post-casting zone (300), and the size of the isolation layer (3) is larger than the size of the protective layer (4); The isolation layer (3) includes a first layer (31) and a second layer (32), and the step S3 includes: Step S3.1, laying the first layer (31) on the flexible waterproof layer (2) and covering the flexible waterproof layer (2); Step S3.2, laying the second layer (32) on the first layer (31), wherein the second layer (32) covers the area of ​​the post-settlement cast-in-place strip (300); The protective layer (4) includes a third layer (41) and a fourth layer (42), and the step S4 includes: Step S4.1, laying the third layer (41) on the first layer (31); Step S4.2: The fourth layer (42) is laid on the second layer (32) and covers the settlement post-casting zone (300) area, and the third layer (41) and the fourth layer (42) together cover the flexible waterproof layer (2) area; The size of the second layer (32) is larger than that of the fourth layer (42), and at least one edge of the second layer (32) extends above the top surface of the fourth layer (42).

2. The method for sealing the roof settlement post-casting zone in advance according to claim 1, characterized in that: The size of the fourth layer (42) is larger than the size of the post-settlement zone (300).

3. The method for sealing the roof settlement post-casting zone in advance according to claim 1, characterized in that: The top surfaces of the third layer (41) and the fourth layer (42) are flush.

4. The method for sealing the roof settlement post-casting zone in advance according to claim 1, characterized in that: The step S2 comprises: The flexible waterproof layer (2) is laid and covered on the top surface of the structural layer (100) and the template (1).

5. The construction method for sealing the roof settlement post-casting strip in advance according to claim 1, characterized in that: The step S1 comprises: The formwork (1) is erected on the steel bars (200) extending from the structural layer (100) to the settlement post-casting zone (300), and the formwork (1) is made flush with the top surface of the structural layer (100).

6. The construction method for sealing the cast-in-place strip after roof settlement is characterized in that: include: Implementing the construction method for sealing the post-casting strip after roof settlement according to any one of claims 1 to 5; dismantling of prematurely enclosed structures; Concrete is poured at the settlement post-casting strip (300) to seal the settlement post-casting strip (300).

7. The roof settlement post-casting strip sealing construction method according to claim 6, characterized in that: The dismantling of the early closed structure includes: Lifting the isolation layer (3), and removing the isolation layer (3) and the protective layer (4) located above the isolation layer (3); Breaking the flexible waterproof layer (2) to expose the template (1) located below the flexible waterproof layer (2); Remove the template (1).

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