Soft soil foundation outdoor drainage system and construction method thereof

Abstract

The invention relates to the technical field of building drainage, and particularly discloses a soft soil foundation outdoor drainage system and a construction method thereof.The drainage system comprises a first drainage pipe, a second drainage pipe and a third drainage pipe, and an outlet of the first drainage pipe is configured to penetrate through a foundation beam or a basement outer wall outwards to be arranged in a soft soil foundation; an inlet of the rubber joint is communicated with an outlet of the first drainage pipe; an inlet of the expansion joint is communicated with an outlet of the rubber joint; an inlet of the second drainage pipe is communicated with an outlet of the expansion joint; and the inspection well is arranged in the soft soil foundation, and the inspection well is communicated with an outlet of the second drainage pipe. According to the soft soil foundation outdoor drainage system and the construction method thereof, the problem that an outdoor plastic drainage pipeline is broken due to differential settlement is solved, and the connection requirements of municipal drainage pipe networks with different burial depths are met.

Description

Technical Field

[0001] The present invention relates to the technical field of building drainage, and particularly to an out-of-house drainage system for soft soil foundation and its construction method. Background Art

[0002] Buildings in soft soil foundation areas will face the problem of uneven settlement of outdoor ground. Common soft soil foundation treatment methods include vacuum preloading, cement mixing piles, etc. Currently, for the technology of preventing uneven settlement of out-of-house building plastic drainage pipes in soft soil foundation, a vertical short pipe is set on the out-of-house pipe, and a sleeve with a certain expansion amount is installed on the short pipe. This method has a good effect on preventing uneven settlement of out-of-house building plastic drainage pipes, but it will increase the buried depth of the out-of-house pipe, making the depth of the connected drainage inspection well larger, and the buried depth of the subsequent drainage pipe network is also larger, which will cause the inability to connect to the municipal connection well with a shallower well depth. Summary of the Invention

[0003] The purpose of the present invention is to provide an out-of-house drainage system for soft soil foundation and its construction method, which solves the problem of fracture of out-of-house plastic drainage pipes caused by uneven settlement and meets the connection requirements of municipal drainage pipe networks with different buried depths.

[0004] To achieve the above purpose, in the first aspect, the present invention provides an out-of-house drainage system for soft soil foundation, including:

[0005] A first drainage pipe, the outlet of which is configured to pass through the foundation beam or the basement exterior wall outward and be arranged in the soft soil foundation;

[0006] A rubber joint, the inlet of which is communicated with the outlet of the first drainage pipe;

[0007] An expansion joint, the inlet of which is communicated with the outlet of the rubber joint;

[0008] A second drainage pipe, the inlet of which is communicated with the outlet of the expansion joint; and

[0009] An inspection well, which is arranged in the soft soil foundation and is communicated with the outlet of the second drainage pipe.

[0010] In some embodiments, the first drainage pipe includes a first pipe body arranged vertically, a 90° elbow, and a second pipe body arranged horizontally. The first pipe body is communicated with the second pipe body through the 90° elbow. The inlet of the first pipe body is configured to pass through the indoor floor upward, and the outlet of the second pipe body is configured to pass through the foundation beam or the basement exterior wall outward and be arranged in the soft soil foundation.

[0011] In some embodiments, it includes a first waterproof sleeve, and the first waterproof sleeve is installed between the first pipe body and the indoor floor.

[0012] In some embodiments, a second waterproof sleeve is included, and the second waterproof sleeve is installed between the second pipe body and the foundation beam or the exterior wall of the basement.

[0013] In some embodiments, a fixed hanging bracket is included, the upper end of the fixed hanging bracket is installed on the indoor floor slab, and the lower end of the fixed hanging bracket is installed on the second pipe body.

[0014] In some embodiments, a connecting pipe is included, and both ends of the connecting pipe are respectively communicated with the inlet of the expansion joint and the outlet of the rubber joint.

[0015] In a second aspect, the present invention provides a construction method for an outhouse drainage system in soft soil foundation, including:

[0016] The outlet of the first drain pipe is passed outwards through the foundation beam or the exterior wall of the basement and buried in the soft soil foundation.

[0017] The inlet of the rubber joint is connected to the outlet of the first drain pipe.

[0018] The inlet of the expansion joint is connected to the outlet of the rubber joint.

[0019] The inlet of the second drain pipe is connected to the outlet of the expansion joint, and the outlet of the second drain pipe is installed in the inspection well.

[0020] In some embodiments, the installation process of the first drain pipe includes: sequentially connecting a vertically arranged first pipe body, a 90° elbow and a horizontally arranged second pipe body, passing the inlet of the first pipe body upwards through the indoor floor slab, and passing the outlet of the second pipe body outwards through the foundation beam or the exterior wall of the basement and arranging it in the soft soil foundation.

[0021] In some embodiments, the first waterproof sleeve is installed between the first pipe body and the indoor floor slab, and the second waterproof sleeve is installed between the second pipe body and the foundation beam or the exterior wall of the basement.

[0022] In some embodiments, a cement mixing pile is used to reinforce the soft soil foundation, obtain the design settlement amount of the soft soil foundation, and determine the specifications of the rubber joint and the expansion joint according to the design settlement amount.

[0023] The present invention provides a soft soil foundation outhouse drainage system and its construction method. Compared with the prior art, its beneficial effects are as follows:

[0024] The outlet of the first drain pipe provided is configured to pass outward through the foundation beam or the exterior wall of the basement and be arranged in the soft soil foundation. The inlet of the rubber joint is communicated with the outlet of the first drain pipe, the inlet of the expansion joint is communicated with the outlet of the rubber joint, the inlet of the second drain pipe is communicated with the outlet of the expansion joint, the inspection well is arranged in the soft soil foundation, and the inspection well is communicated with the outlet of the second drain pipe. Through the rubber joint and the expansion joint, the problem of the breakage of the second drain pipe caused by uneven settlement is solved, and the connection requirements of the municipal drainage pipe network with different buried depths are met. Brief Description of the Drawings

[0025] Figure 1 FIG. is a schematic structural view of an outhouse drainage system for a soft soil foundation provided by some embodiments of the present invention.

[0026] Figure 2 FIG. is a schematic structural view of an outhouse drainage system for a soft soil foundation after uneven settlement provided by some embodiments of the present invention.

[0027] In the figure: 1. First drain pipe; 11. First pipe body; 12. 90° elbow; 13. Second pipe body; 14. First waterproof sleeve; 15. Second waterproof sleeve; 2. Rubber joint; 3. Expansion joint; 4. Second drain pipe; 5. Inspection well; 6. Soft soil foundation; 7. Indoor floor slab; 8. Fixed hanger; 9. Connecting pipe. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0029] It should be understood that in the description of the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features, that is, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In addition, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0031] Such as Figure 1 - Figure 2As shown in the figure, the out-of-house drainage system for soft soil foundation provided by some embodiments of the present invention includes: a first drain pipe 1, a rubber joint 2, an expansion joint 3, a second drain pipe 4, and an inspection well 5. In this way, when the soft soil foundation 6 settles, the rubber joint 2 generates an angular displacement, and the expansion joint 3 is stretched, so that the second drain pipe 4 will not be broken due to settlement.

[0032] The outlet of the first drain pipe 1 is configured to pass outward through the foundation beam or the basement exterior wall and be arranged in the soft soil foundation 6. In this way, the position of the first drain pipe 1 is relatively stable.

[0033] The inlet of the rubber joint 2 is communicated with the outlet of the first drain pipe 1. Exemplarily, the rubber joint 2 is a flexible rubber joint.

[0034] The inlet of the expansion joint 3 is communicated with the outlet of the rubber joint 2. The inlet of the second drain pipe 4 is communicated with the outlet of the expansion joint 3. In this way, the connection between the first drain pipe 1 and the second drain pipe is realized through the rubber joint 2 and the expansion joint 3.

[0035] The inspection well 5 is arranged in the soft soil foundation 6, and the inspection well 5 is communicated with the outlet of the second drain pipe 4. In this way, when the soft soil foundation 6 settles, the settlement of the inspection well 5 will drive the outlet of the second drain pipe 4 to shift downward.

[0036] Based on the above structural settings, when the soft soil foundation 6 settles, the settlement of the inspection well 5 will drive the outlet of the second drain pipe 4 to shift downward, and the first drain pipe 1 and the second drain pipe are connected through the rubber joint 2 and the expansion joint 3. The position of the first drain pipe 1 is relatively stable. At this time, an angular displacement is generated through the rubber joint 2, and the expansion joint 3 is stretched, so that the second drain pipe 4 will not be broken due to settlement. It is not necessary to deeply bury the second drain pipe, thus meeting the connection requirements of municipal drainage pipe networks with different burial depths.

[0037] As Figure 1 shown, in some embodiments, the first drain pipe 1 includes a first pipe body 11 arranged vertically, a 90° elbow 12, and a second pipe body 13 arranged horizontally. The first pipe body 11 is communicated with the second pipe body 13 through the 90° elbow 12. The inlet of the first pipe body 11 is configured to pass upward through the indoor floor slab 7, and the outlet of the second pipe body 13 is configured to pass outward through the foundation beam or the basement exterior wall and be arranged in the soft soil foundation 6. In this way, the drainage requirement indoors can be met through the first pipe body 11, and the water indoors can be drained outdoors through the second pipe body 13.

[0038] As Figure 1 shown, in some embodiments, it includes a first waterproof sleeve 14, and the first waterproof sleeve 14 is installed between the first pipe body 11 and the indoor floor slab 7. In this way, the installation structure of the first pipe body 11 is made stable through the first waterproof sleeve 14, and it has a waterproof effect.

[0039] As Figure 1 shown, in some embodiments, a second waterproof sleeve 15 is included, and the second waterproof sleeve 15 is installed between the second pipe body 13 and the foundation beam or the basement exterior wall. In this way, the installation structure of the second pipe body 13 is made stable through the second waterproof sleeve 15, and a waterproof effect is achieved.

[0040] As Figure 1 shown, in some embodiments, a fixed hanging bracket 8 is included, the upper end of the fixed hanging bracket 8 is installed on the indoor floor slab 7, and the lower end of the fixed hanging bracket 8 is installed on the second pipe body 13. In this way, the installation stability of the second pipe body 13 is further improved.

[0041] As Figure 1 shown, in some embodiments, a connecting pipe 9 is included, and both ends of the connecting pipe 9 are respectively communicated with the inlet of the expansion joint 3 and the outlet of the rubber joint 2. In this way, the connection between the inlet of the expansion joint 3 and the outlet of the rubber joint 2 is made convenient.

[0042] The construction method of the soft soil foundation household drainage system provided by some other embodiments of the present invention includes the following steps:

[0043] S1. The outlet of the first drain pipe is passed outwards through the foundation beam or the basement exterior wall and covered and laid in the soft soil foundation;

[0044] S2. The inlet of the rubber joint is connected to the outlet of the first drain pipe;

[0045] S3. The inlet of the expansion joint is connected to the outlet of the rubber joint;

[0046] S4. The inlet of the second drain pipe is connected to the outlet of the expansion joint, and the outlet of the second drain pipe is installed in the inspection well.

[0047] In some embodiments, the installation process of the first drain pipe includes: sequentially connecting a vertically arranged first pipe body, a 90° elbow and a horizontally arranged second pipe body, passing the inlet of the first pipe body upwards through the indoor floor slab, and passing the outlet of the second pipe body outwards through the foundation beam or the basement exterior wall and arranging it in the soft soil foundation.

[0048] In some embodiments, a first waterproof sleeve is installed between the first pipe body and the indoor floor slab, and a second waterproof sleeve is installed between the second pipe body and the foundation beam or the basement exterior wall.

[0049] In some embodiments, a cement mixing pile is used to reinforce the soft soil foundation, the designed settlement amount of the soft soil foundation is obtained, and the specifications of the rubber joint and the expansion joint are determined according to the designed settlement amount.

[0050] Based on the above construction method, when the soft soil foundation settles, the settlement of the inspection well will drive the outlet of the second drain pipe to shift downward. The first drain pipe and the second drain pipe are connected by a rubber joint and an expansion joint. The position of the first drain pipe is relatively stable. At this time, angular displacement is generated through the rubber joint, and the expansion joint is stretched, so that the second drain pipe will not be broken due to settlement. There is no need to bury the second drain pipe deeply, so as to adapt to the connection requirements of municipal drainage pipe networks with different burial depths.

[0051] In a specific embodiment, determining the specifications of the rubber joint and the expansion joint according to the designed settlement amount includes:

[0052] If the angular displacement of the rubber joint exceeds its maximum allowable displacement value, the rubber joint will break away from the first drain pipe, causing the second drain pipe to fall off and break. If the foundation settlement amount exceeds the maximum allowable expansion amount of the expansion joint, it will also cause the second drain pipe to fall off and break; calculating the maximum allowable displacement value of the angular displacement of the rubber joint and the maximum allowable expansion amount of the expansion joint is the key step to prevent the outhouse plastic drainage pipe from breaking due to uneven settlement.

[0053] According to Table 6 of the national standard "Flexible Rubber Joints" GB / T 26121-2010 and Table 4.5.2 of the national industrial standard "Technical Specification for Building Drainage Plastic Pipeworks" CJJ / T 29-2010.

[0054] Taking the second drain pipe with De (outer diameter) 160 as an example, the maximum allowable displacement value of the angular displacement of the De160 rubber joint is 15 degrees, and the maximum allowable expansion amount of the De160 expansion joint is 25 mm; according to the trigonometric function formula, tan15° = 0.268; if the length from the rubber joint to the inspection well is 5 meters, then the maximum allowable settlement amount △h = 1.34 meters, if the length from the rubber joint to the inspection well is 2 meters, then the maximum allowable settlement amount △h = 0.536 meters; in actual construction, a cement mixing pile is used to reinforce the soft soil foundation, and the designed settlement amount after treatment is controlled within 300 mm - 400 mm. Calculated according to the most unfavorable situation △h = 0.4 meters, according to the Pythagorean theorem, the expansion amount of the second drain pipe at this time is 16 mm, which is less than the maximum allowable expansion amount of the expansion joint of 25 mm, meeting the requirements; if the length is calculated as 2 meters and the maximum settlement amount △h = 0.4 meters, the expansion amount of the second drain pipe at this time is 39 mm, which is greater than the maximum allowable expansion amount of one expansion joint of 25 mm, and an additional expansion joint needs to be added to meet the use requirements.

[0055] It can be seen from the above calculations that for the foundation settlement after the soft soil foundation is treated according to the specifications, adopting the method of setting a rubber joint and one or more expansion joints in the drainage system can effectively prevent the plastic pipe of the second drain pipe from breaking due to uneven settlement, and has wide adaptability, but it needs to be calculated and reviewed before implementation.

[0056] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A soft soil foundation household drainage system, characterized in that Comprising: A first drain pipe, the outlet of which is configured to pass outward through the foundation beam or the exterior wall of the basement and be arranged in the soft soil foundation; A rubber joint, the inlet of which is communicated with the outlet of the first drain pipe; An expansion joint, the inlet of which is communicated with the outlet of the rubber joint; A second drain pipe, the inlet of which is communicated with the outlet of the expansion joint; And An inspection well, arranged in the soft soil foundation, and the inspection well is communicated with the outlet of the second drain pipe.

2. The outhouse drainage system for soft soil foundation according to claim 1, wherein The first drain pipe includes a first pipe body arranged vertically, a 90° elbow, and a second pipe body arranged horizontally. The first pipe body is communicated with the second pipe body through the 90° elbow. The inlet of the first pipe body is configured to pass upward through the indoor floor slab, and the outlet of the second pipe body is configured to pass outward through the foundation beam or the exterior wall of the basement and be arranged in the soft soil foundation.

3. The outhouse drainage system for soft soil foundation according to claim 2, characterized in that, Comprising a first waterproof sleeve, and the first waterproof sleeve is installed between the first pipe body and the indoor floor slab.

4. The outhouse drainage system for soft soil foundation according to claim 2, characterized in that, Comprising a second waterproof sleeve, and the second waterproof sleeve is installed between the second pipe body and the foundation beam or the exterior wall of the basement.

5. The outhouse drainage system for soft soil foundation according to claim 2, characterized in that, Comprising a fixed hanger, the upper end of the fixed hanger is installed on the indoor floor slab, and the lower end of the fixed hanger is installed on the second pipe body.

6. The outhouse drainage system for soft soil foundation according to claim 1, characterized in that, Comprising a connecting pipe, and both ends of the connecting pipe are respectively communicated with the inlet of the expansion joint and the outlet of the rubber joint.

7. A construction method for the outhouse drainage system of soft soil foundation according to any one of claims 1-6, characterized in that, Comprising: Cover the outlet of the first drain pipe with soil by passing it outward through the foundation beam or the exterior wall of the basement and arrange it in the soft soil foundation; Connect the inlet of the rubber joint with the outlet of the first drain pipe; Connect the inlet of the expansion joint with the outlet of the rubber joint; Connect the inlet of the second drain pipe with the outlet of the expansion joint, and install the outlet of the second drain pipe in the inspection well.

8. The construction method of the household drainage system for soft soil foundation according to claim 7, characterized in that, The installation process of the first drain pipe includes: sequentially connecting the first pipe body arranged vertically, the 90° elbow, and the second pipe body arranged horizontally, passing the inlet of the first pipe body upward through the indoor floor slab, and passing the outlet of the second pipe body outward through the foundation beam or the exterior wall of the basement and arranging it in the soft soil foundation.

9. The construction method of the household drainage system for soft soil foundation according to claim 8, characterized in that, Install the first waterproof sleeve between the first pipe body and the indoor floor slab, and install the second waterproof sleeve between the second pipe body and the foundation beam or the exterior wall of the basement.

10. The construction method of the household drainage system for soft soil foundation according to claim 7, characterized in that, Reinforce the soft soil foundation by using a cement mixing pile, obtain the designed settlement amount of the soft soil foundation, and determine the specifications of the rubber joint and the expansion joint according to the designed settlement amount.

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