Construction method for housing construction super-long sewage pipe network

Abstract

The invention relates to a housing building super-long sewage pipe network construction method which comprises the following steps that a super-long sewage pipe network is divided to form a plurality of construction sections, construction is conducted in sequence, and the construction of each construction section comprises the steps that supporting plates are arranged on the two sides of the corresponding position of the construction section; a pipe ditch is formed between the supporting plates on the two sides through excavation; constructing a cushion layer at the bottom of the pipe ditch formed by excavation; a sewage pipe is installed on the cushion layer; backfilling backfill materials on the cushion layer to form a backfill layer, wherein the top of the formed backfill layer is higher than the top of the sewage pipe; a concrete layer is constructed on the backfill layer; backfilling soil on the concrete layer and compacting the soil, and pulling out the supporting plate; and after the construction of one construction section is completed, the construction of the next construction section is carried out until the construction of the super-long sewage pipe network is completed. The supporting system is formed by the cushion layer, the concrete layer and the middle backfilling layer, and the situation that the sewage pipeline sinks and deforms in the supporting plate pulling-out process can be avoided.

Description

Technical Field

[0001] The invention relates to the field of pipe network construction engineering, in particular to a construction method for an ultra-long sewage pipe network for building construction. Background Art

[0002] In the construction of large public buildings such as hospitals, sewage pipe networks are the first part of the outdoor integrated pipelines to be constructed because they are located at the bottom of all other pipelines and require a large excavation depth, with an average depth of up to 2 meters. This construction sequence is to ensure that sewage can flow under the action of gravity. However, this construction method brings some challenges:

[0003] Safety risks: Due to the great depth of excavation for the sewage pipe network, there are great safety hazards at the construction site, including the risk of landslides that may occur during the excavation process, as well as the safety risks of construction workers working in deep foundation pits.

[0004] Quality risk: In order to ensure the stability of the outdoor integrated pipeline and prevent the pipeline from sinking or damage, it is sometimes necessary to carry out additional backfilling and reinforcement work after the sewage pipe network construction is completed. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art, provide a construction method for an ultra-long sewage pipe network for building construction, and solve the problems of installation risk and quality risk in the existing construction method.

[0006] The technical solution to achieve the above purpose is:

[0007] The present invention provides a construction method for an ultra-long sewage pipe network for building construction, comprising the following steps:

[0008] Divide the extra-long sewage pipe network into multiple construction sections;

[0009] The construction will be carried out in sequence according to the divided construction sections. The construction of each construction section includes:

[0010] Support plates are set on both sides of the corresponding positions of the construction section;

[0011] Dig between the support plates on both sides to form a pipe trench;

[0012] Construct a cushion layer at the bottom of the trench formed by excavation;

[0013] Install the sewer pipe on top of the pad;

[0014] Backfilling the cushion layer with backfill material to form a backfill layer, wherein the top of the formed backfill layer is higher than the top of the sewage pipe;

[0015] constructing a concrete layer on top of the backfill layer;

[0016] Backfill soil on the concrete layer and compact it, and pull out the support plate, thereby completing the construction of the corresponding construction section;

[0017] After completing the construction of one construction section, the construction of the next construction section will be carried out until the construction of the super-long sewage pipe network is completed.

[0018] A further improvement of the construction method of the super-long sewage pipe network for building construction of the present invention is that, in the process of excavating the pipe trench, a top support is provided at the top of the pipe trench.

[0019] A further improvement of the construction method of the super-long sewage pipe network for building construction of the present invention is that when the supporting plate is arranged, the supporting plate is arranged at a position 10 cm to 15 cm away from the installation position of the sewage pipe.

[0020] A further improvement of the construction method of the super-long sewage pipe network for building construction of the present invention is that when setting the supporting plate, a digging and vibration hammer is used to drive the supporting plate into the soil.

[0021] A further improvement of the method for constructing an extra-long sewage pipe network for building construction of the present invention is that after the support plate is constructed, the head of the excavation and vibration hammer is replaced with a bucket to start the excavation construction of the pipe trench.

[0022] A further improvement of the construction method of the super-long sewage pipe network for building construction of the present invention is that the backfill material forming the backfill layer is coarse sand or gravel.

[0023] A further improvement of the construction method of the super-long sewage pipe network for building construction of the present invention is that the top of the formed backfill layer is 20 mm to 30 mm higher than the top of the sewage pipe.

[0024] A further improvement of the construction method of the super-long sewage pipe network for building construction of the present invention is that when constructing the cushion layer, the side of the cushion layer is connected to the side wall of the pipe trench.

[0025] A further improvement of the construction method of the super-long sewage pipe network for building construction of the present invention is that when constructing the concrete layer, the side of the concrete layer is connected to the side wall of the pipe trench.

[0026] A further improvement of the construction method of the super-long sewage pipe network for building construction of the present invention is that the support plate provided is a 10 mm thick steel plate.

[0027] The beneficial effects of the construction method of the super-long sewage pipe network for building construction of the present invention are:

[0028] The support plate of the present invention adopts micro steel plate support and utilizes a dual-purpose excavation-modification vibration hammer to realize switching between support and trench excavation at any time, with single machinery and high efficiency.

[0029] The present invention adopts a cushion layer and a concrete layer + a middle backfill layer to form a support system, which can prevent the sewage pipe from sinking and deforming during the process of pulling out the support plate.

[0030] The supporting plates of the present invention are embedded and fixed by using special nodes, and the materials and machinery consumption are reduced through flow construction, thereby improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a structural schematic diagram of a method for constructing an ultra-long sewage pipe network for building construction, in which a plurality of construction sections are formed.

[0032] Figure 2 It is a cross-sectional view of a construction section of the method for constructing an ultra-long sewage pipe network for building construction of the present invention.

[0033] Figure 3 It is a top view of the connection structure of multiple support plates in the construction method of super-long sewage pipe network for building construction of the present invention.

[0034] Figure 4 The present invention is a flow chart of the method for constructing an extra-long sewage pipe network for building construction. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] See also Figure 1 The present invention provides a construction method for an extra-long sewage pipe network for building construction, which is used to reduce the impact on the surrounding working conditions during the construction process. Through refined management, the disturbance and damage to the backfilled and compacted soil layer are reduced. The construction method of the present invention has the characteristics of rapid construction, which not only improves the construction efficiency, but also ensures that the construction quality meets high standards. More importantly, the present invention also has the ability of turnover and recycling. The construction method of the extra-long sewage pipe network for building construction of the present invention is described below in conjunction with the accompanying drawings.

[0037] See also Figure 4 , showing a flow chart of the method for constructing an ultra-long sewage pipe network for building construction according to the present invention. Figure 4 , the construction method of the super-long sewage pipe network for building construction of the present invention is explained.

[0038] like Figure 4 As shown, the construction method of the super-long sewage pipe network for building construction of the present invention comprises the following steps:

[0039] Execute step S101 to divide the extra-long sewage pipe network into multiple construction sections; then execute step S102;

[0040] Execute step S102 to perform construction in sequence according to the divided construction sections, wherein the construction of each construction section includes the following steps:

[0041] Execute step S103, set support plates on both sides of the corresponding position of the construction section; then execute step S104;

[0042] Execute step S104 to excavate a trench between the support plates on both sides; then execute step S105;

[0043] Execute step S105 to construct a cushion layer at the bottom of the trench formed by excavation; then execute step S106;

[0044] Execute step S106 to install the sewage pipe on the cushion layer; then execute step S107;

[0045] Execute step S107, backfill the backfill material onto the cushion layer to form a backfill layer, wherein the top of the formed backfill layer is higher than the top of the sewage pipe; then execute step S108;

[0046] Execute step S108 to construct a concrete layer on the backfill layer; then execute step S109;

[0047] Execute step S109, backfill soil on the concrete layer and compact it, and pull out the support plate, thereby completing the construction of the corresponding construction section;

[0048] Execute step S110, after completing the construction of one construction section, proceed to the construction of the next construction section until the construction of the super-long sewage pipe network is completed.

[0049] like Figure 1 As shown, the construction method of the present invention divides the construction of the sewage pipe network into multiple construction sections along the designed length of the sewage pipe network, and constructs the construction sections in sequence, and then constructs the next construction section after the previous construction section is completed.

[0050] Furthermore, when dividing the construction sections, it can be divided according to distance, for example, the length of a construction section is 50m, or it can be divided according to the distance between adjacent sewage wells.

[0051] In a specific embodiment of the present invention, the corresponding position of the construction section is also the buried position of the sewage pipe in the construction section. The design depth and design width of the trench can be determined according to the buried position of the sewage pipe. The layout is carried out according to the design width of the trench, and a certain distance is reserved for setting up support plates.

[0052] Furthermore, if Figure 2 As shown, when setting the support plate 31, the support plate is set at a position 10 cm to 15 cm away from the installation position of the sewage pipe 11. For example, the support plate 31 can be set at a position 10 cm away from the corresponding side of the sewage pipe 11, and the setting direction of the support plate 31 is consistent with the setting direction of the sewage pipe 11 at the construction section. The set support plate 31 ensures stability and safety in the subsequent excavation process of forming the pipe trench 32.

[0053] Furthermore, the support plate 31 is a 10 mm thick steel plate. The size is 3m*2m, and the driving depth of the support plate 31 is 3m. Figure 3 As shown, a sleeve 311 is provided at the end of the support plate 31, and the front support plate 31 is connected with the rear support plate 31 by the sleeve 311 at the end, and a plug-in groove is formed on the side of the sleeve 311, and the rear support plate 31 can be inserted into the plug-in groove during the construction process. The sleeve 311 is preferably C-shaped.

[0054] Furthermore, when setting the support plate 31, a digging and modifying vibration hammer is used to drive the support plate 31 into the soil. The digging and modifying vibration hammer has two functions, which can be used to open up the earthwork and to construct the support plate, and only needs to replace the working head with different functions.

[0055] In a specific embodiment of the present invention, Figure 2 As shown, during the process of excavating the trench 32 , a top support 36 is provided at the top of the trench 32 .

[0056] When excavating the soil to form the pipe trench 32, the excavation is gradually carried out from one end of the construction section to the other end. The excavation of each part needs to be completed at one time, that is, to the designed depth. After the excavation of one part is completed, a top support 36 is set at the top.

[0057] The size of the trench 32 excavation is slightly smaller than the distance between the two support plates, ensuring that the steel plates are not damaged and the trench can be excavated in place at one time.

[0058] Furthermore, after the support plate 31 is constructed, the head of the excavation vibration hammer is replaced with a bucket, and the excavation construction of the pipe trench 32 is started.

[0059] Furthermore, according to the depth of the pipe trench 32 and the surrounding environment, a middle support is selected to be provided, that is, a middle support is added in the middle of the pipe trench 32 .

[0060] In a specific embodiment of the present invention, Figure 2 As shown, after the trench 32 is dug, a cushion layer 33 is cast at the bottom of the trench 32. The thickness of the cushion layer 33 is 50 mm, and C20 concrete is selected for casting. The setting of the cushion layer 33 can ensure a firm foundation and prevent the pipeline from sinking.

[0061] When constructing the cushion layer 33 , the side of the cushion layer 33 is in contact with the side wall of the pipe trench 32 .

[0062] In a specific embodiment of the present invention, Figure 1 and Figure 2As shown, after the cushion layer 33 is constructed, the sewage pipe 11 is placed on the cushion layer 33 . When installing the sewage pipe 11 , a joint pipe 111 is provided at the end of the previous section of the sewage pipe 11 for connecting the next section of the sewage pipe 11 .

[0063] The sewage pipe 11 is normally sloped when installed.

[0064] Furthermore, the backfill material forming the backfill layer 34 is coarse sand or gravel.

[0065] Furthermore, the top of the formed backfill layer 34 is 20 mm to 30 mm higher than the top of the sewage pipe. Preferably, the top of the backfill layer 34 is 20 mm higher than the top of the sewage pipe 11.

[0066] Furthermore, a concrete layer 35 is cast on the backfill layer 34. The thickness of the concrete layer 35 is 50 mm, and C20 concrete is used for casting.

[0067] When the concrete layer 35 is constructed, the side of the concrete layer 35 is brought into contact with the side wall of the trench 32 .

[0068] The concrete layer 35, the cushion layer 33 and the backfill layer 34 form an internal support system, which can ensure that the sewage pipe 11 is not affected by the sudden change of soil pressure on both sides of the vibrator after the support plate is pulled out.

[0069] After the concrete layer 35 is constructed, backfill soil is added to the pipe trench 32 and compacted, the support plate is pulled out, and the construction work of the next water flow section is carried out.

[0070] like Figure 1 As shown, construction area 21 is a section that has been completed, construction area 22 is a section that is currently under construction, and construction area 23 is a section that has not been constructed. The construction method of the present invention performs construction of the construction sections section by section along the flow construction direction.

[0071] The construction method of the present invention has the following advantages:

[0072] 1. Single machine, very little excavation and fast construction speed.

[0073] 2. It has little impact on the surrounding area and does not affect the construction of other pipelines, and can be operated in a continuous flow.

[0074] 3. The pipeline can be suspended to avoid people working in the foundation pit for a long time and reduce safety hazards.

[0075] 4. The foundation is stable and the construction quality is high.

[0076] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A method for constructing an ultra-long sewage pipe network for building construction, characterized in that: The steps include: Divide the extra-long sewage pipe network into multiple construction sections; The construction will be carried out in sequence according to the divided construction sections. The construction of each construction section includes: Support plates are set on both sides of the corresponding positions of the construction section; Dig between the support plates on both sides to form a pipe trench; Construct a cushion layer at the bottom of the trench formed by excavation; Install the sewer pipe on top of the pad; Backfilling the cushion layer with backfill material to form a backfill layer, wherein the top of the formed backfill layer is higher than the top of the sewage pipe; constructing a concrete layer on top of the backfill layer; Backfill soil on the concrete layer and compact it, and pull out the support plate, thereby completing the construction of the corresponding construction section; After completing the construction of one construction section, the construction of the next construction section will be carried out until the construction of the super-long sewage pipe network is completed.

2. The method for constructing an extra-long sewage pipe network for building construction as claimed in claim 1, characterized in that: During the process of excavating the trench, a top support is set at the top of the trench.

3. The method for constructing an extra-long sewage pipe network for building construction as claimed in claim 1, characterized in that: When setting the support plate, set the support plate at a position 10cm to 15cm away from the sewage pipe installation position.

4. The method for constructing an extra-long sewage pipe network for building construction as claimed in claim 1, characterized in that: When setting the support plate, use a vibratory hammer to drive the support plate into the soil.

5. The method for constructing an extra-long sewage pipe network for building construction as claimed in claim 1, characterized in that: After the support plate is constructed, the head of the vibratory hammer is replaced with a bucket and the trench excavation construction begins.

6. The method for constructing an extra-long sewage pipe network for building construction as claimed in claim 1, characterized in that: The backfill material forming the backfill layer is coarse sand or gravel.

7. The method for constructing an extra-long sewage pipe network for building construction as claimed in claim 1, characterized in that: The top of the formed backfill layer is 20 mm to 30 mm higher than the top of the sewage pipe.

8. The construction method of an extra-long sewage pipe network for building construction as claimed in claim 1, characterized in that: When constructing the cushion layer, make sure the side of the cushion layer is in contact with the side wall of the trench.

9. The method for constructing an extra-long sewage pipe network for building construction as claimed in claim 1, characterized in that: When constructing the concrete layer, allow the side of the concrete layer to touch the side wall of the trench.

10. The construction method of an extra-long sewage pipe network for building construction as claimed in claim 1, characterized in that: The support plate is a 10mm thick steel plate.

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