A connecting structure and construction method for avoiding burying a drain pipe interface in a structural floor

Abstract

The application provides a connecting structure for avoiding burying a drainage pipeline interface in a structural floor, comprising an inner wall body and an outer wall body, the top of the inner wall body is provided with an upper structural floor, the bottom of the inner wall body is provided with a lower structural floor, a pipe well is arranged between the inner wall body and the outer wall body, a drainage vertical pipe is installed in the pipe well, the upper structural floor and the lower structural floor are both provided with a sleeve hole for facilitating pipeline installation at the joint with the drainage vertical pipe, an upper extension tee joint and a lower extension tee joint are respectively installed in the sleeve hole of the upper structural floor and the lower structural floor, and the pipeline interfaces of the upper extension tee joint and the lower extension tee joint are both exposed outside the upper structural floor and the lower structural floor and are not embedded in the structural layer of the upper structural floor and the lower structural floor. The application completely exposes the drainage pipeline interface outside the structural layer of the floor by optimizing the structure of the pipe joint and the construction process, and fundamentally solves the safety and operation and maintenance problems caused by burying the interface in the structural layer.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a connection structure and construction method that avoids the drainage pipe interface being embedded in the structural floor slab. Background Technology

[0002] In building drainage engineering, the junction between drainage pipes and structural floor slabs has always been a frequent source of leakage problems. Traditional construction methods typically involve pre-drilling or drilling holes in the structural floor slab for drainage risers and tees to pass through. During construction, pipe joints (such as the connection between a tee and a riser, or between a horizontal pipe and a tee) are often located within the thickness of the floor slab structural layer, and may even be covered by subsequently poured concrete or filled with waterproof sealant.

[0003] This practice of embedding pipe joints within the structural floor slab has several technical drawbacks: First, with the pipe joints concealed within the structural layer, leaks cannot be detected promptly, and repairs require damaging the floor structure, resulting in high costs and difficulties, severely impacting the building's normal use. Second, due to the different coefficients of linear expansion between pipes and concrete, stress concentration can easily occur at the joints during temperature changes and building settlement, leading to seal failure and potential leaks. Finally, traditional construction methods require extremely high precision in the placement of the bushings, making the installation process complex and difficult to guarantee the long-term sealing reliability of the pipe joints. Therefore, how to effectively avoid embedding pipe joints within the structural floor slab while ensuring the functionality of the drainage system, and how to achieve inspectability and repairability of the pipe joints, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a connection structure and construction method that avoids the drainage pipe interface being buried in the structural floor slab. By optimizing the pipe fitting structure and construction process, the drainage pipe interface is completely exposed outside the floor slab structural layer, thus fundamentally solving the safety and operation and maintenance problems caused by the interface being buried in the structural layer.

[0005] To achieve the above technical solution, this invention provides a connection structure that avoids embedding drainage pipe interfaces into structural floor slabs, comprising: an inner wall and an outer wall; an upper structural floor slab is provided at the top of the inner wall, and a lower structural floor slab is provided at the bottom of the inner wall; a pipe shaft is provided between the inner wall and the outer wall; a drainage riser is installed in the pipe shaft; both the upper and lower structural floor slabs have pre-drilled holes at their joints with the drainage riser to facilitate pipe installation; an extended tee fitting is installed in the hole of the upper structural floor slab; the extended tee fitting includes a longitudinal main pipe and a transverse branch pipe; the bottom of the longitudinal main pipe of the extended tee fitting penetrates the hole in the upper structural floor slab and is connected to the top of the drainage riser by a clamp; the top of the longitudinal main pipe of the extended tee fitting is connected to the upper floor... The bottoms of the drainage risers are connected by clamps. The horizontal branch of the upper extended tee is located above the sleeve hole of the upper structural floor slab and is connected to the reserved horizontal pipe by clamps. The lower extended tee is installed in the sleeve hole of the lower structural floor slab. The top of the vertical main pipe of the lower extended tee is connected to the bottom of the drainage riser by clamps. The bottom of the vertical main pipe of the lower extended tee passes through the sleeve hole set in the lower structural floor slab and is connected to the top of the drainage riser of the next floor by clamps. The horizontal branch of the lower extended tee is located above the sleeve hole of the lower structural floor slab and is connected to the reserved horizontal pipe by clamps. The pipe interfaces of the upper and lower extended tees are exposed outside the upper and lower structural floor slabs and are not embedded in the structural layers of the upper and lower structural floor slabs.

[0006] In the above technical solution, by setting upper and lower extended tee fittings, the length of the longitudinal main pipe is sufficient to penetrate the structural floor slab, so that all pipe joints (clamp connection points) are exposed outside the structural floor slab. This completely changes the situation where joints are buried in the floor slab in traditional construction, realizing the visualization of pipe joints, facilitating daily inspection, and allowing for repair or replacement without damaging the floor slab in case of leakage. Moreover, with the joints located outside the floor slab, the risk of water accumulation in the floor slab structural layer seeping along the outer wall of the pipe through capillary action is effectively avoided. Even if a slight leak occurs at the joint, the leak will be directly exposed in the visible space and will not spread along the structural layer, greatly reducing the damage of leakage to the building structure. By moving the joints out of the structural layer, this invention avoids the shear and compressive stresses generated by concrete solidification shrinkage, temperature changes, and uneven building settlement on the joints. The clamp connection, in an unconstrained external environment, can better adapt to the small displacement of the pipe, thereby ensuring the long-term stability and sealing of the connection.

[0007] Preferably, the gap between the sleeve hole and the upper or lower extended tee is sealed with waterproof sealing material, without covering any pipe interface, to prevent the interface from being buried again due to improper sealing work during actual construction.

[0008] Preferably, the length of the longitudinal main pipe of the extended tee is 1.5-3 times the depth of the hole in the upper structural floor slab, so that the connecting end of the longitudinal main pipe of the extended tee can extend below the bottom of the hole in the upper structural floor slab.

[0009] Preferably, the length of the longitudinal main pipe of the extended tee is 1.5-3 times the depth of the hole in the lower structural floor slab, allowing the connecting end of the longitudinal main pipe to extend below the bottom of the hole in the lower structural floor slab, thus ensuring that all connection interfaces (clamps) are located outside the structural floor layer. This length range not only ensures exposed interfaces but also provides ample operating space for the installation, tightening, and subsequent maintenance of clamps, avoiding improper installation or maintenance difficulties due to limited space. Furthermore, this length range can accommodate structural floor slabs of different thicknesses and minor deviations during construction, exhibiting good versatility and tolerance.

[0010] Preferably, the drainage riser is fixed to the exterior wall by multiple riser supports arranged in parallel at intervals. The multiple riser supports can precisely control the verticality of the riser, creating favorable conditions for the accurate connection between the extended tee fitting and the riser.

[0011] This invention also provides a construction method to avoid embedding drainage pipe interfaces into structural floor slabs, specifically including the following steps: S1. Opening sleeve holes in the upper and lower structural floor slabs; S2. Install the drainage riser in the pipe well; S3. Insert the extended tee into the sleeve hole opened on the upper structural floor slab, so that the connection end of the longitudinal main pipe of the extended tee can extend to below the bottom of the sleeve hole of the upper structural floor slab. Connect the bottom of the longitudinal main pipe of the extended tee to the top of the drainage riser with a clamp. Connect the top of the longitudinal main pipe of the extended tee to the bottom of the drainage riser on the previous floor with a clamp. Connect the horizontal branch pipe of the extended tee to the reserved horizontal pipe with a clamp. S4. Insert the extended tee into the sleeve hole opened in the lower structural floor slab, so that the connection end of the longitudinal main pipe of the extended tee can extend to below the bottom of the sleeve hole in the lower structural floor slab. Connect the top of the longitudinal main pipe of the extended tee to the bottom of the drainage riser with a clamp. Connect the bottom of the longitudinal main pipe of the extended tee to the top of the drainage riser on the next floor with a clamp. Connect the horizontal branch pipe of the extended tee to the reserved horizontal pipe with a clamp. S5. Seal the gaps between the upper and lower extended tee fittings and the sleeve hole; S6. Conduct leakage tests and visual inspections on all external interfaces.

[0012] The beneficial effects of the connection structure and construction method provided by this invention, which avoids embedding drainage pipe interfaces into structural floor slabs, are as follows: (1) This invention completely cuts off the hidden channel for water leakage by moving the pipe interface out of the structural floor slab. Even if the interface seal fails, the leakage can be detected and repaired immediately, fundamentally solving the common problem of leakage at the point where building drainage pipes pass through the floor slab, and greatly improving the quality of building waterproofing.

[0013] (2) In this invention, all pipe interfaces are exposed in the visible space, and maintenance personnel can carry out daily inspections, tightening or replacing clamps without damaging the decoration and structure, which greatly reduces the maintenance difficulty and the total life cycle cost, and meets the requirements of building industrialization and green building for ease of maintenance.

[0014] (3) This invention releases the interface from the constrained concrete environment, avoiding damage to the pipe interface caused by additional stresses generated by factors such as temperature difference, settlement, and shrinkage. Combined with a reliable support system, it significantly improves the stability and durability of the pipe connection in long-term use. Attached Figure Description

[0015] Figure 1 This is a connection diagram to avoid embedding drainage pipe interfaces into the structural floor slab in this invention.

[0016] Figure 2 This is a schematic diagram of the structure of the extended tee member in this invention.

[0017] In the diagram: 1. Exterior wall; 2. Interior wall; 3. Pipe shaft; 4. Drainage riser; 5. Riser support; 6. Clamp; 7. Lower extension tee; 71. Longitudinal main pipe; 72. Horizontal branch pipe; 8. Upper extension tee; 9. Upper structural floor slab; 10. Lower structural floor slab; 11. Reserved horizontal pipe; 12. Ceiling; 13. Finished floor surface; 14. Toilet; 15. Interior finish. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0019] Example 1: A connection structure that avoids embedding drainage pipe interfaces into structural floor slabs.

[0020] Reference Figures 1 to 2As shown, a connection structure that avoids embedding drainage pipe interfaces into structural floor slabs includes: an inner wall 2 and an outer wall 1. The surface of the inner wall 2 is fitted with an interior finish 15. An upper structural floor slab 9 is installed on the top of the inner wall 2, and a suspended ceiling 12 is installed on the bottom surface of the upper structural floor slab 9. A lower structural floor slab 10 is installed at the bottom of the inner wall 2. A pipe shaft 3 is provided between the inner wall 2 and the outer wall 1. A drainage riser 4 is installed within the pipe shaft 3, and the drainage riser 4 is arranged in multiple parallel, spaced sections. The riser support 5 is fixed to the outer wall 1. Multiple riser supports 5 can precisely control the verticality of the drainage riser 4, creating a good prerequisite for the accurate connection of the extended tee fitting and the drainage riser 4. Both the upper structural floor slab 9 and the lower structural floor slab 10 have pre-drilled sleeve holes at their connection points with the drainage riser 4 to facilitate pipe installation. An upper extended tee fitting 8 is installed in the sleeve hole of the upper structural floor slab, and a lower extended tee fitting 7 is installed in the sleeve hole of the lower structural floor slab 10. The upper extended tee fitting 8 and the lower extended tee fitting... The structures of 7 are the same, including a longitudinal main pipe 71 and a transverse branch pipe 72. The bottom of the longitudinal main pipe 71 of the extended tee 8 passes through the sleeve hole provided on the upper structural floor slab 9 and is connected to the top of the drainage riser 4 by a clamp 6. The top of the longitudinal main pipe 71 of the extended tee 8 is connected to the bottom of the drainage riser 4 of the upper floor by a clamp 6. The transverse branch pipe 72 of the extended tee 8 is located above the sleeve hole of the upper structural floor slab 9 and is connected to the reserved horizontal pipe 11 by a clamp 6. The longitudinal main pipe 71 of the extended tee fitting 8 is twice the depth of the hole in the upper structural floor slab 9, allowing the connecting end of the longitudinal main pipe 71 of the extended tee fitting 8 to extend below the bottom of the hole in the upper structural floor slab 9. This ensures that all connection interfaces (clamps) are located outside the structural floor layer. This length not only ensures the interfaces are exposed but also provides ample operating space for the installation, tightening, and subsequent maintenance of the clamps 6, avoiding improper installation or maintenance difficulties due to limited space. Furthermore, this length range can accommodate structural floor slabs of different thicknesses and minor deviations during construction, exhibiting good versatility and tolerance.

[0021] A lower extension tee 7 is installed in the sleeve hole of the lower structural floor slab 10. The top of the longitudinal main pipe 71 of the lower extension tee 7 is connected to the bottom of the drainage riser 4 by a clamp 6. The bottom of the longitudinal main pipe 71 of the lower extension tee 7 passes through the sleeve hole provided on the lower structural floor slab 10 and is connected to the top of the drainage riser 4 of the next floor by a clamp 6. The horizontal branch pipe 72 of the lower extension tee 7 is located above the sleeve hole of the lower structural floor slab 10 and is connected to the reserved horizontal pipe 11 by a clamp 6. The reserved horizontal pipe 11 is connected to the water outlet pipe of the toilet 14 installed on the finished floor surface 13. The length of the longitudinal main pipe 71 of the lower extension tee 7 is twice the depth of the sleeve hole of the lower structural floor slab 10, so that the connecting end of the longitudinal main pipe 71 of the lower extension tee 7 can extend below the bottom of the sleeve hole of the lower structural floor slab 10. The pipe interfaces of the upper extended tee 8 and the lower extended tee 7 are exposed outside the upper structural floor slab 9 and the lower structural floor slab 10, and are not embedded in the structural layers of the upper structural floor slab 9 and the lower structural floor slab 10. The gap between the sleeve and the upper extended tee 8 or the lower extended tee 7 is sealed with waterproof sealant, without covering any pipe interface, to prevent the interface from being buried again due to improper sealing work during actual construction.

[0022] This invention, by incorporating an upper extended tee 8 and a lower extended tee 7, ensures that the longitudinal main pipe 71 is long enough to penetrate the structural floor slab, exposing all pipe joints (connected by clamps 6) outside the structural floor slab. This completely changes the traditional construction practice where joints are embedded in the floor slab, enabling visualization of pipe joints for easy daily inspection and allowing for repair or replacement without damaging the floor slab in case of leakage. Furthermore, the external location of the joints effectively avoids the risk of water accumulation within the structural floor layer seeping along the pipe's outer wall via capillary action. Even in the event of minor leakage, the water is directly exposed in the visible space and does not spread along the structural layer, significantly reducing the damage to the building structure. By removing the joints from the structural layer, this invention avoids the shear and compressive stresses caused by concrete shrinkage, temperature changes, and uneven building settlement. The clamps, connected in an unconstrained external environment, better accommodate minor pipe displacements, thus ensuring long-term stability and sealing of the connection.

[0023] Example 2: A construction method to avoid embedding drainage pipe interfaces into structural floor slabs.

[0024] A construction method to avoid embedding drainage pipe joints into structural floor slabs, specifically including the following steps: S1. Opening sleeve holes in the upper and lower structural floor slabs; S2. Install the drainage riser in the pipe well; S3. Insert the extended tee into the sleeve hole opened on the upper structural floor slab, so that the connection end of the longitudinal main pipe of the extended tee can extend to below the bottom of the sleeve hole of the upper structural floor slab. Connect the bottom of the longitudinal main pipe of the extended tee to the top of the drainage riser with a clamp. Connect the top of the longitudinal main pipe of the extended tee to the bottom of the drainage riser on the previous floor with a clamp. Connect the horizontal branch pipe of the extended tee to the reserved horizontal pipe with a clamp. S4. Insert the extended tee into the sleeve hole opened in the lower structural floor slab, so that the connection end of the longitudinal main pipe of the extended tee can extend to below the bottom of the sleeve hole in the lower structural floor slab. Connect the top of the longitudinal main pipe of the extended tee to the bottom of the drainage riser with a clamp. Connect the bottom of the longitudinal main pipe of the extended tee to the top of the drainage riser on the next floor with a clamp. Connect the horizontal branch pipe of the extended tee to the reserved horizontal pipe with a clamp. S5. Seal the gaps between the upper and lower extended tee fittings and the sleeve hole; S6. Conduct leakage tests and visual inspections on all external interfaces.

[0025] This construction method removes the pipe joints from within the structural floor slab, completely eliminating hidden channels for water leakage. Even if the joint seal fails, leaks can be detected and repaired immediately, fundamentally solving the common problem of leakage at the point where building drainage pipes penetrate floor slabs and significantly improving the quality of building waterproofing. This method, through the sequence of "installing the pipe first, then inserting the extension, and finally sealing the gap," avoids problems such as reversed procedures and buried joints that are common in traditional construction. The final leakage test and visual inspection steps provide ultimate verification of the construction quality, ensuring the reliability of the system upon delivery. This method releases the joints from the constrained concrete environment, preventing damage to the pipe joints caused by additional stresses from factors such as temperature differences, settlement, and shrinkage, significantly improving the stability and durability of the pipe connections during long-term use.

[0026] The above description is only a preferred embodiment of the present invention, but the present invention should not be limited to the content disclosed in the embodiments and drawings. Therefore, any equivalent or modified embodiments made without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A connection structure that avoids embedding drainage pipe interfaces into structural floor slabs, comprising: The system comprises interior and exterior walls. An upper structural floor slab is located at the top of the interior wall, and a lower structural floor slab is located at the bottom of the interior wall. A pipe shaft is provided between the interior and exterior walls, and a drainage riser is installed within the pipe shaft. Sleeves for easy pipe installation are pre-drilled at the connection points between the upper and lower structural floor slabs and the drainage riser. The system is characterized in that an extended tee fitting is installed within the sleeve in the upper structural floor slab. The extended tee fitting includes a longitudinal main pipe and a transverse branch pipe. The bottom of the longitudinal main pipe of the extended tee fitting penetrates the sleeve in the upper structural floor slab and is connected to the top of the drainage riser by a clamp. The top of the longitudinal main pipe of the extended tee fitting is connected to the bottom of the drainage riser on the next higher floor by a clamp. The horizontal branch pipe of the extended tee is located above the sleeve hole of the upper structural floor slab and is connected to the reserved horizontal pipe by a clamp. The lower extended tee is installed in the sleeve hole of the lower structural floor slab. The top of the longitudinal main pipe of the lower extended tee is connected to the bottom of the drainage riser by a clamp. The bottom of the longitudinal main pipe of the lower extended tee passes through the sleeve hole set in the lower structural floor slab and is connected to the top of the drainage riser of the next floor by a clamp. The horizontal branch pipe of the lower extended tee is located above the sleeve hole of the lower structural floor slab and is connected to the reserved horizontal pipe by a clamp. The pipe interfaces of the upper and lower extended tee are exposed outside the upper and lower structural floor slabs and are not embedded in the structural layers of the upper and lower structural floor slabs.

2. The connection structure for avoiding the embedment of drainage pipe interfaces into the structural floor slab according to claim 1, characterized in that, The gap between the sleeve and the upper or lower extended tee is sealed with waterproof sealing material, without covering any pipe interface.

3. The connection structure for avoiding the embedment of drainage pipe interfaces into the structural floor slab according to claim 1, characterized in that, The length of the longitudinal main pipe of the extended tee is 1.5-3 times the depth of the hole in the upper structural floor slab, so that the connecting end of the longitudinal main pipe of the extended tee can extend to below the bottom of the hole in the upper structural floor slab.

4. The connection structure for avoiding the embedment of drainage pipe interfaces into the structural floor slab according to claim 1, characterized in that, The length of the longitudinal main pipe of the lower extended tee is 1.5-3 times the depth of the sleeve hole in the lower structural floor slab, so that the connecting end of the longitudinal main pipe of the lower extended tee can extend to below the bottom of the sleeve hole in the lower structural floor slab.

5. The connection structure for avoiding the embedment of drainage pipe interfaces into the structural floor slab according to claim 1, characterized in that, The drainage riser is fixed to the exterior wall by multiple riser supports that are arranged in parallel and spaced order.

6. A construction method to avoid embedding drainage pipe interfaces into structural floor slabs, characterized in that, Specifically, the steps include the following: S1. Opening sleeve holes in the upper and lower structural floor slabs; S2. Install the drainage riser in the pipe well; S3. Insert the extended tee into the sleeve hole opened on the upper structural floor slab, so that the connection end of the longitudinal main pipe of the extended tee can extend to below the bottom of the sleeve hole of the upper structural floor slab. Connect the bottom of the longitudinal main pipe of the extended tee to the top of the drainage riser with a clamp. Connect the top of the longitudinal main pipe of the extended tee to the bottom of the drainage riser on the previous floor with a clamp. Connect the horizontal branch pipe of the extended tee to the reserved horizontal pipe with a clamp. S4. Insert the extended tee into the sleeve hole opened in the lower structural floor slab, so that the connection end of the longitudinal main pipe of the extended tee can extend to below the bottom of the sleeve hole in the lower structural floor slab. Connect the top of the longitudinal main pipe of the extended tee to the bottom of the drainage riser with a clamp. Connect the bottom of the longitudinal main pipe of the extended tee to the top of the drainage riser on the next floor with a clamp. Connect the horizontal branch pipe of the extended tee to the reserved horizontal pipe with a clamp. S5. Seal the gaps between the upper and lower extended tee fittings and the sleeve hole; S6. Conduct leakage tests and visual inspections on all external interfaces.

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