An advanced construction pipeline reservation construction system for post-cast holes in pipe wells

Abstract

The present invention discloses a construction system for pre-constructing pipeline reservation in the post-cast hole of a pipe well, which includes a pipe well formwork, a first formwork, a second formwork and a post-cast area. The pipe well formwork is composed of the first formwork, the second formwork and the post-cast area. The post-cast area is composed of a casing and a measurement and setting-out hole. The measurement and setting-out hole is arranged inside the casing. Casing steel bars are arranged on the outer side of the casing. Plate steel bars are arranged on the outer side of the casing steel bars. A concrete secondary pouring demarcation line is arranged between the casing steel bars and the plate steel bars. A polystyrene board is arranged inside the concrete secondary pouring demarcation line. A water stop wing ring is arranged inside the second formwork. A pipeline formwork is arranged on one side of the measurement and setting-out hole. The formwork in this area can be retained for a long time until the pipeline is accurately positioned, the casing is adjusted in place, and the concrete around the pipeline is poured and reaches the formwork removal strength before the formwork can be removed; immediately after the formwork is removed, the pipeline is inserted for installation.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical and electrical pipeline installation, and particularly relates to a construction system for pre-constructing pipeline reservation in a post-cast hole of a pipe shaft. Background Art

[0002] The traditional method for the structural slab of the mechanical and electrical pipe shaft is to pour concrete after the installation of mechanical and electrical pipelines. Since the main structure construction is usually completed during this period, the concrete pouring pipelines are removed, and the concrete for the post-cast hole is usually transported by a construction elevator; the traditional method mainly has problems such as inconvenient concrete transportation, difficult formwork support, poor construction quality, and large safety hazards. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a construction system for pre-constructing pipeline reservation in a post-cast hole of a pipe shaft to solve the problems in the above background art, that is, the traditional method for the structural slab of the mechanical and electrical pipe shaft is to pour concrete after the installation of mechanical and electrical pipelines. Since the main structure construction is usually completed during this period, the concrete pouring pipelines are removed, and the concrete for the post-cast hole is usually transported by a construction elevator; the traditional method mainly has problems such as inconvenient concrete transportation, difficult formwork support, poor construction quality, and large safety hazards.

[0004] To achieve the above object, the present invention provides the following technical solution: A construction system for pre-constructing pipeline reservation in a post-cast hole of a pipe shaft, including a pipe shaft formwork, a first formwork, a second formwork, and a post-cast area. The pipe shaft formwork is composed of the first formwork, the second formwork, and the post-cast area. The post-cast area is composed of a casing and a measurement and setting-out hole. A measurement and setting-out hole is arranged inside the casing. Casing steel bars are arranged on the outer side of the casing. Plate bars are arranged on the outer side of the casing steel bars. A concrete secondary pouring demarcation line is arranged between the casing steel bars and the plate bars. A polystyrene board is arranged inside the concrete secondary pouring demarcation line. A water stop wing ring is arranged inside the second formwork. A pipeline formwork is arranged on one side of the measurement and setting-out hole. A wooden square is arranged on one side of the pipeline formwork. Steel wires are arranged at the upper end of the wooden square.

[0005] Preferably, the first formwork is the already-poured structural slab of the pipe shaft, and the second formwork is the post-cast slab around the pipeline.

[0006] Preferably, the water stop wing ring is a waterproof pipe shaft.

[0007] Preferably, the measurement and setting-out hole is a garbage cleaning port.

[0008] Preferably, the second formwork is fixedly connected to the plate bars inside the first formwork through steel wires.

[0009] Preferably, the measurement and setting-out hole is located inside the casing, and the aperture of the measurement and setting-out hole is smaller than that of the casing.

[0010] Preferably, the casing is of an adjustable structure.

[0011] A construction system for reserving construction of pipes in advance in a post-cast hole of a pipe well includes the following steps;

[0012] Step 1: The pipe well formwork is erected on the same floor as the main structure. The first formwork erection method is the same as that of the structural slab of this floor. The second formwork is fixed to the slab reinforcement in the surrounding previously cast structural slab by steel wires. When the area of the post-cast area is large, wooden strips can be set under the second formwork for support. The steel wires bypass the wooden strips and are poured simultaneously with the surrounding structural slab. The casing and the casing reinforcement are installed synchronously with the slab reinforcement;

[0013] Step 2: Pour the pipe well structural slab except for the post-cast area. When it reaches the formwork removal strength, the formwork of the previously cast area can be removed;

[0014] Step 3: Accurately position the pipe through the measurement and setting-out holes to ensure that the center line of the casing coincides with the center line of the pipe, guarantee that the pipe is located at the center of the casing. Chisel and clean the surrounding of the original concrete, and use the measurement and setting-out holes as garbage cleaning ports. After timely cleaning the sundries, accurately position and fix the casing;

[0015] Step 4: Pour the structural slab of the post-cast area. After it reaches the formwork removal strength, remove the second formwork, and then install and fix the pipe. After the installation is completed, promptly seal the gap between the pipe and the casing.

[0016] Compared with the prior art, the present invention provides a construction system for reserving construction of pipes in advance in a post-cast hole of a pipe well, having the following beneficial effects:

[0017] 1. By positioning the mechanical and electrical pipes in advance and installing pipe casings, a water stop ring can be added to pipe wells with waterproof requirements. The formwork under the casing is independently fixed to the surrounding formwork. A measurement and setting-out hole is opened in the formwork under the casing; while achieving the advance pouring of the pipe well structural slab, the vertical positioning adjustment of the casings on the upper and lower floors can be carried out through the measurement and setting-out holes, and the formwork under the casing is fixed to the structural slab reinforcement by steel wires and poured into the structural slab during the advance pouring of the structural slab, ensuring the independent fixation of the formwork under the casing. After the formwork of the well is removed, the formwork in this area can be retained for a long time until the pipe is accurately positioned, the casing is adjusted in place, and the concrete around the pipe is poured and reaches the formwork removal strength before the formwork can be removed; Immediately insert the pipe installation after the formwork is removed;

[0018] 2. The present invention is applicable to the pre - construction of the structural slab of the mechanical and electrical pipe well without post - casting, and the advanced positioning and pre - installation and adjustment of mechanical and electrical pipelines. This technology constructs the structural slab of the pipe well synchronously with the floor slab. The formwork around the pipelines is installed independently, and the structural slab is cast after the pipeline installation and adjustment. Through the advanced construction of the structural slab of the post - casting hole and the pre - positioning and installation of the pipeline casing, it reduces the problems of the large amount of high - strength concrete used in the post - casting hole, the inconvenience of post - installation of the pipe well formwork, and the difficulty of controlling the forming quality, saves construction costs, speeds up the construction speed, and ensures construction quality. At the same time, the advanced construction of the structural slab of the post - casting hole and the pre - installation of the formwork can avoid the safety hazards caused by untimely covering of the hole, ensuring construction safety. Moreover, through the circular and radial steel bars welded around the casing, it can be effectively connected with the slab reinforcement, avoiding the problem that the slab reinforcement is disconnected when encountering the pipeline and the structural safety is affected due to the lack of timely reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is a schematic diagram of the formwork layout structure of the pipe well proposed by the present invention;

[0021] Figure 2 is a schematic diagram of the node structure of the post - casting area proposed by the present invention;

[0022] Figure 3 is a sectional view proposed by the present invention;

[0023] In the figure: 1. Pipe well formwork; 2. First formwork; 3. Second formwork; 4. Casing; 5. Measuring and setting - out hole; 6. Post - casting area; 7. Casing steel bar; 8. Slab reinforcement; 9. Concrete secondary casting demarcation line; 10. Polystyrene board; 11. Water - stop wing ring; 12. Pipeline formwork; 13. Wooden square; 14. Steel wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-3, the present invention provides a technical solution: a construction system for pre-constructing pipeline reservation in the post-cast hole of a pipe well, including a pipe well formwork 1, a first formwork 2, a second formwork 3 and a post-cast area 6. The pipe well formwork 1 is composed of the first formwork 2, the second formwork 3 and the post-cast area 6. The post-cast area 6 is composed of a casing 4 and a measurement and setting-out hole 5. A measurement and setting-out hole 5 is arranged inside the casing 4. A casing steel bar 7 is arranged outside the casing 4. A slab steel bar 8 is arranged outside the casing steel bar 7. A concrete secondary pouring demarcation line 9 is arranged between the casing steel bar 7 and the slab steel bar 8. A polystyrene board 10 is arranged inside the concrete secondary pouring demarcation line 9. A water stop wing ring 11 is arranged inside the second formwork 3. A pipeline formwork 12 is arranged on one side of the measurement and setting-out hole 5. A wooden square 13 is arranged on one side of the pipeline formwork 12. A steel wire 14 is arranged at the upper end of the wooden square 13.

[0026] In the present invention, preferably, the first formwork 2 is the already-cast structural slab of the pipe well, and the second formwork 3 is the post-cast slab around the pipeline.

[0027] In the present invention, preferably, the water stop wing ring 11 is a waterproof pipe well.

[0028] In the present invention, preferably, the measurement and setting-out hole 5 is a garbage cleaning port.

[0029] In the present invention, preferably, the second formwork 3 is fixedly connected to the slab steel bar 8 inside the first formwork 2 through the steel wire 14.

[0030] In the present invention, preferably, the measurement and setting-out hole 5 is located inside the casing 4, and the aperture of the measurement and setting-out hole 5 is smaller than that of the casing 4.

[0031] In the present invention, preferably, the casing 4 is an adjustable structure.

[0032] A construction system for pre-constructing pipeline reservation in the post-cast hole of a pipe well includes the following steps;

[0033] Step 1: The pipe well formwork 1 is erected on the same floor as the structural main body. The erection method of the first formwork 2 is the same as that of the structural slab of this floor. The second formwork 3 is fixedly connected to the slab steel bar 8 in the surrounding already-poured structural slab through the steel wire 14. When the area of the post-cast area 6 is large, a wooden square 13 can be arranged under the second formwork 3 for support. The steel wire 14 bypasses the wooden square 13 and is poured simultaneously with the surrounding structural slab. The casing 4 and the casing steel bar 7 are installed synchronously with the slab steel bar 8;

[0034] Step 2: Pour the pipe well structural slab except the post-cast area 6. When it reaches the form removal strength, the formwork of the already-poured area can be removed;

[0035] Step 3: Perform precise positioning of the pipeline through the measurement and setting-out hole 5 to ensure that the center line of the casing 4 coincides with the center line of the pipeline, and ensure that the pipeline is located at the center of the casing 4. The surrounding of the original concrete is chiseled and cleaned, and the measurement and setting-out hole 5 is used as a garbage cleaning port. After the sundries are cleaned in time, the casing 4 is accurately positioned and fixed;

[0036] Step 4: Pour the structural slab of the post-cast area 6. After reaching the formwork removal strength, remove the second formwork 3, then install and fix the pipeline. After the installation is completed, promptly seal the gap between the pipeline and the casing 4.

[0037] Example 1

[0038] A pipeline reserved structure for advanced construction of a post-cast hole in a pipe well includes a pipe well formwork 1, a first formwork 2, a second formwork 3, and a post-cast area 6. The pipe well formwork 1 is composed of the first formwork 2, the second formwork 3, and the post-cast area 6. The post-cast area 6 is composed of a casing 4 and a measurement and layout hole 5. A measurement and layout hole 5 is arranged inside the casing 4. A casing steel bar 7 is arranged outside the casing 4. A slab steel bar 8 is arranged outside the casing steel bar 7. A concrete secondary pouring demarcation line 9 is arranged between the casing steel bar 7 and the slab steel bar 8. A polystyrene board 10 is arranged inside the concrete secondary pouring demarcation line 9. A water stop wing ring 11 is arranged inside the second formwork 3. A pipeline formwork 12 is arranged on one side of the measurement and layout hole 5. A wooden square 13 is arranged on one side of the pipeline formwork 12. A steel wire 14 is arranged at the upper end of the wooden square 13.

[0039] The first formwork 2 is the already-poured structural slab of the pipe well. The second formwork 3 is the post-cast slab around the pipeline. The water stop wing ring 11 is a waterproof pipe well. The measurement and layout hole 5 is a garbage cleaning port. The second formwork 3 is fixedly connected to the slab steel bar 8 inside the first formwork 2 through a steel wire 14. The measurement and layout hole 5 is located inside the casing 4, and the aperture of the measurement and layout hole 5 is smaller than that of the casing 4. The casing 4 is an adjustable structure.

[0040] Example 2

[0041] A construction method for pipeline reservation in advanced construction of a post-cast hole in a pipe well includes the following steps;

[0042] Step 1: The pipe well formwork 1 is erected on the same floor as the structural main body. The first formwork 2 is supported in the same way as the structural slab of this floor. The second formwork 3 is fixedly connected to the slab steel bar 8 in the previously poured surrounding structural slab through a steel wire 14. When the area of the post-cast area 6 is large, a wooden square 13 can be arranged under the second formwork 3 for support. The steel wire 14 bypasses the wooden square 13 and is poured simultaneously with the surrounding structural slab. The casing 4 and the casing steel bar 7 are installed synchronously with the slab steel bar 8;

[0043] Step 2: Pour the pipe well structural slab except for the post-cast area 6. When reaching the formwork removal strength, the formwork of the previously poured area can be removed;

[0044] Step 3: Through the measurement and layout hole 5, accurately position the pipeline to ensure that the center line of the casing 4 coincides with the center line of the pipeline, ensure that the pipeline is located at the center of the casing 4, chisel and clean the surrounding of the original concrete, and use the measurement and layout hole 5 as a garbage cleaning port. After promptly cleaning the sundries, accurately position and fix the casing 4;

[0045] Step 4: Pour the structural slab of the post-cast area 6. After reaching the formwork removal strength, remove the second formwork 3, then install and fix the pipeline. After the installation is completed, promptly seal the gap between the pipeline and the casing 4.

[0046] The working principle and usage process of the present invention: During use, the pipe shaft formwork 1 is erected on the same floor as the structural main body. The first formwork 2 is erected in the same way as the structural slab of this floor. The second formwork 3 is fixed to the slab reinforcement 8 in the surrounding pre-cast structural slab through the steel wire 14. When the area of the post-cast area 6 is large, a wooden square 13 can be set under the second formwork 3 for support. The steel wire 14 bypasses the wooden square 13 and is poured simultaneously with the surrounding structural slab. The casing 4 and the casing reinforcement 7 are installed synchronously with the slab reinforcement 8. Pour the pipe shaft structural slab except for the post-cast area 6. When reaching the formwork removal strength, the formwork of the pre-cast area can be removed. Through the measurement and setting-out hole 5, the pipeline is accurately positioned to ensure that the center line of the casing 4 coincides with the center line of the pipeline, ensuring that the pipeline is located at the center of the casing 4. The surrounding of the original concrete is roughened and cleaned, and the measurement and setting-out hole 5 is used as a garbage cleaning port. After promptly cleaning the sundries, the casing 4 is accurately positioned and fixed. Pour the structural slab of the post-cast area 6. After reaching the formwork removal strength, remove the second formwork 3, then install and fix the pipeline. After the installation is completed, promptly seal the gap between the pipeline and the casing 4.

[0047] By positioning the mechanical and electrical pipelines in advance and installing the pipeline casing 4, a water stop ring can be added to the pipe shaft with waterproof requirements. The formwork below the casing 4 is independently fixed to the surrounding formwork. The formwork below the casing 4 is provided with a measurement and setting-out hole 5. While realizing the advance pouring of the pipe shaft structural slab, the vertical positioning adjustment of the casing 4 between the upper and lower floors can be carried out through the measurement and setting-out hole 5, and the formwork below the casing 4 is fixed to the structural slab reinforcement through the steel wire 14. When the structural slab is poured in advance, it is poured into the structural slab to ensure the independent fixation of the formwork below the casing 4. After the formwork of the shaft is removed, the formwork in this area can be retained for a long time until the pipeline is accurately positioned, the casing 4 is adjusted in place, and the concrete around the pipeline is poured and reaches the formwork removal strength before the formwork can be removed; Immediately insert the pipeline installation after the formwork is removed;

[0048] It is applicable to the pre-construction of the structural slab of the mechanical and electrical pipe shaft without post-casting, the advance positioning and pre-installation and adjustment of the mechanical and electrical pipelines. This technology constructs the pipe shaft structural slab and the floor slab synchronously. The formwork around the pipeline is independently installed. After the pipeline is installed and adjusted, the structural slab is poured. Through the advance construction of the post-cast hole structural slab and the advance positioning and installation of the pipeline casing 4, it reduces the problems of high-strength concrete consumption in the post-cast hole, inconvenient post-installation construction of the pipe shaft formwork, and great difficulty in controlling the forming quality, saves construction costs, speeds up the construction speed, and ensures construction quality; At the same time, the advance construction of the post-cast hole structural slab and the pre-installation of the formwork can avoid the safety hazards caused by untimely covering of the hole, ensuring construction safety; Furthermore, through the circular and radial steel bars welded around the casing 4, it can be effectively connected with the slab reinforcement 8, avoiding the problem that the slab reinforcement 8 is disconnected due to the pipeline and the structural safety is affected due to the failure to reinforce in time.

[0049] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction system for pre-constructing pipeline reservation in the post-cast hole of a pipe well, comprising a pipe well formwork (1), a first formwork (2), a second formwork (3) and a post-cast area (6), characterized in that: The pipe well formwork (1) consists of a first formwork (2), a second formwork (3) and a post-cast area (6). The post-cast area (6) consists of a casing (4) and a measuring and setting-out hole (5). The measuring and setting-out hole (5) is arranged inside the casing (4). The outside of the casing (4) is provided with casing steel bars (7). The outside of the casing steel bars (7) is provided with slab steel bars (8). A concrete secondary pouring demarcation line (9) is arranged between the casing steel bars (7) and the slab steel bars (8). A polystyrene board (10) is arranged inside the concrete secondary pouring demarcation line (9). A water stop wing ring (11) is arranged inside the second formwork (3). A pipe formwork (12) is arranged on one side of the measuring and setting-out hole (5). A wooden square (13) is arranged on one side of the pipe formwork (12). A steel wire (14) is arranged at the upper end of the wooden square (13). The first formwork (2) is the already-poured structural slab of the pipe well. The second formwork (3) is the post-cast slab around the pipe. The water stop wing ring (11) is a waterproof pipe well. The measuring and setting-out hole (5) is located inside the casing (4), and the diameter of the measuring and setting-out hole (5) is smaller than that of the casing (4).

2. The advanced construction pipeline reservation construction system for the post-cast hole in the pipe well according to claim 1, characterized in that: The measuring and setting-out hole (5) is a garbage cleaning port.

3. A pre-construction pipeline reservation construction system for post-cast holes in pipe wells according to claim 1, characterized in that: The second formwork (3) is fixedly connected to the slab steel bars (8) inside the first formwork (2) through the steel wire (14).

4. A construction system for pre-reserving a pipeline in advance for a post-pouring hole in a pipe well according to claim 1, characterized in that: The casing (4) is an adjustable structure.

5. A construction system for pre-reserving a pipeline in advance for a post-pouring hole of a pipe well according to claim 1, characterized in that: It includes the following steps; Step 1: The pipe well formwork (1) is erected on the same floor as the structural main body. The supporting method of the first formwork (2) is the same as that of the structural slab of this floor. The second formwork (3) is fixedly connected to the slab steel bars (8) inside the surrounding pre-poured structural slab through the steel wire (14). When the area of the post-cast area (6) is large, a wooden square (13) can be arranged under the second formwork (3) for support. The steel wire (14) bypasses the wooden square (13) and is poured simultaneously with the surrounding structural slab. The casing (4) and the casing steel bars (7) are installed synchronously with the slab steel bars (8). Step 2: Pour the pipe well structural slab except the post-cast area (6). When it reaches the demoulding strength, the formwork of the pre-poured area can be removed. Step 3: Carry out precise positioning of the pipeline through the measuring and setting-out hole (5) to ensure that the center line of the casing (4) coincides with the center line of the pipeline, and ensure that the pipeline is located at the center of the casing (4). The surrounding of the original concrete is chiseled and cleaned, and the measuring and setting-out hole (5) is used as a garbage cleaning port. After the sundries are cleaned in time, the casing (4) is precisely positioned and fixed. Step 4: Pour the structural slab of the post-cast area (6). After it reaches the demoulding strength, the second formwork (3) is removed, and then the pipeline is installed and fixed. After the installation is completed, the gap between the pipeline and the casing (4) is blocked in time.

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