Reverse construction method pipe jacking well wall hanging sliding type concrete pouring device and construction method thereof
By designing a sliding concrete pouring device on the wall-mounted pipe well constructed in the reverse process, and using annular guide rails and deflectors to achieve sliding pouring of concrete, the problems of concrete separation and high working strength in traditional construction methods are solved, and the pouring efficiency and safety are improved.
Patent Information
- Application Number
- CN202510333226.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2025-06-06
AI Technical Summary
In reverse-process pipe heading wells, traditional construction methods use long chutes or manual assisted oblique baffles to cause concrete separation, affecting the quality of casting, and the workers have high working strength and concrete waste.
A reverse-action sliding concrete pouring device for hanging walls of the top pipe well is designed, including an annular guide rail, an inclined deflector and a side baffle. By setting an annular guide rail on the cast well wall structure, the sliding casting of concrete is achieved using a diversion plate and a side baffle.
The device improves the efficiency of concrete pouring, reduces the working strength of the workers, and avoids the separation of concrete.
Smart Images
Figure CN120099966A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building construction, and in particular to a reverse construction method jacking pipe well wall hanging sliding type concrete pouring device and a construction method thereof. Background Art
[0002] In deep foundation pit projects, for working pits with smaller chamber dimensions, an internal support system must be set up due to the open excavation method. The internal support system seriously restricts the excavation and structural construction of the chamber. Therefore, for working pits with smaller chamber dimensions, the conventional design adopts a pre-support system, and the shaft wall structure is constructed in sections from top to bottom using the reverse construction method. The shaft wall structure of the reverse construction method uses an internal support system to cast the shaft wall structure concrete. The thickness of the next section of the shaft wall is generally 100mm different from that of the previous section. When the shaft wall structure is constructed in sections, when pouring the concrete of the lower section structure, the concrete is poured through the 100mm gap between the upper and lower shaft walls.
[0003] During the conventional top-pipe well reverse construction, the concrete pouring of the well wall structure adopts the wooden chute set up on the upper part of the internal support to the four sides of the well wall to allow the concrete to flow in through the 100mm gap between the upper and lower well walls, or the artificial auxiliary inclined baffle to allow the concrete to flow in through the 100mm gap between the upper and lower well walls. For a 3-6m long chute, concrete segregation is easy to occur, which affects the quality of concrete pouring, and the workload of setting up and removing the chute support bracket is large. For the artificial auxiliary inclined baffle, a special person is required to support the pump pipe and a special person to support and move the baffle. The concrete pouring workers have high work intensity, and there is a phenomenon of concrete waste during the pouring process.
[0004] In order to solve the shortcomings of traditional construction methods in pouring concrete of the shaft wall structure of a top pipe shaft constructed by reverse construction, improve the safety of the working environment and the pouring efficiency, and reduce the work intensity of the operators, a wall-hanging sliding concrete pouring device for a top pipe shaft structure by reverse construction is invented.
[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention
[0006] In order to overcome the defects of the prior art, a wall-hanging sliding concrete pouring device and a construction method for a top-down pipe well are provided to solve the problem of concrete segregation caused by the traditional construction method of using a long chute in the concrete pouring of the top-down pipe well wall structure.
[0007] In order to achieve the above-mentioned purpose, a reverse pipe jacking well wall hanging sliding type concrete pouring device is provided, comprising:
[0008] The annular guide rail is detachably mounted on the inner wall of the upper pipe section of the top pipe;
[0009] A guide plate arranged obliquely, wherein a first roller abutting against the inner wall is installed at the lower end of the guide plate, a support rod is connected to the upper end of the guide plate, and an end of the support rod away from the guide plate is slidably arranged on the annular guide rail, and a feeding gap is formed between the lower end of the guide plate and the inner wall, and the feeding gap is aligned with the top pouring port of the next pipe section;
[0010] Side baffles are formed on opposite sides of the guide plate, and the side baffles and the upper surface of the guide plate are enclosed to form a material discharge channel.
[0011] Furthermore, a slide groove is formed at the top of the annular guide rail, and the slide groove is arranged along the circumferential direction of the annular guide rail. A second roller is installed at one end of the support rod, and the second roller is slidably arranged in the slide groove.
[0012] Furthermore, a groove wall of the slide groove away from the inner wall is installed with an anti-slip rib, and the support rod is installed with a limiting piece, and the limiting piece abuts against the bottom of the anti-slip rib.
[0013] Furthermore, the upper portion of the side baffle is connected to the support rod.
[0014] Furthermore, a support plate is hinged at the lower end of the guide plate, the lower side of the support plate abuts against the outer side of the inner template of the next pipe section, and an elastic member is connected to the inner side of the support plate, which presses against the top of the inner template.
[0015] Furthermore, the elastic member is a rubber rib, and the rubber rib is arranged along the length direction of the inner template.
[0016] The present invention provides a construction method of a reverse pipe jacking well wall hanging sliding type concrete pouring device, comprising the following steps:
[0017] Before pouring the next pipe section of the jacking pipe, installing the annular guide rail on the inner wall of the previous pipe section of the jacking pipe;
[0018] One end of the support rod at the upper end of the guide plate is slidably disposed on the annular guide rail, and the first roller at the lower end of the guide plate is pressed against the inner wall, so that the feeding gap formed between the lower end of the guide plate and the inner wall is aligned with the top pouring port of the next pipe section;
[0019] Putting concrete into the discharge channel formed between the side baffle and the upper surface of the guide plate through a concrete pump pipe, so that the concrete is poured into the top pouring port through the feeding gap;
[0020] The guide plate is slid along the circumferential direction of the annular guide rail to the next construction position to cast the next section of the next pipe section
[0021] The beneficial effects of the present invention are that the wall-hanging sliding concrete pouring device for a top-down pipe well of the present invention is suitable for the concrete pouring construction of the wall structure of a top-down pipe well of the present invention, and sliding concrete pouring is achieved by arranging an annular guide rail on the poured wall structure (i.e., the previous pipe section), using a steel plate to process a guide plate for oblique concrete pouring, and installing a first roller. This device only requires manual support of the pump pipe and pushing of the guide plate to achieve concrete pouring of the next pipe section, thereby improving the concrete pouring efficiency, reducing the work intensity of operators, and avoiding concrete segregation. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
[0023] Figure 1 It is a schematic structural diagram of a reverse pipe jacking shaft wall-hanging sliding concrete pouring device according to an embodiment of the present invention.
[0024] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the figure.
[0025] Figure 3 for Figure 1 A local enlarged schematic diagram of point B in the figure.
[0026] Figure 4 It is a side view of a reverse pipe jacking shaft wall hanging sliding type concrete pouring device according to an embodiment of the present invention. DETAILED DESCRIPTION
[0027] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.
[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0029] Reference Figures 1 to 4 As shown, the present invention provides a reverse pipe jacking shaft wall hanging sliding type concrete pouring device, comprising: an annular guide rail 1, a guide plate 2, and a side baffle 3.
[0030] In this embodiment, the annular guide rail 1 is detachably mounted on the inner wall of the upper pipe section 4 of the top pipe. The outer diameter of the annular guide rail is adapted to the inner diameter of the upper pipe section of the top pipe. The annular guide rail is detachably mounted on the inner wall of the upper pipe section by expansion bolts.
[0031] The guide plate 2 is arranged obliquely. The upper end of the guide plate 2 is arranged obliquely upward toward the inner side of the annular guide rail.
[0032] A first roller 22 is mounted on the lower end of the guide plate 2. The first roller 22 abuts against the inner wall.
[0033] The upper end of the guide plate 2 is connected with a support rod 21. In this embodiment, the support rod is arranged along the radial direction of the annular guide rail. The support rod has one end and the other end opposite to each other. The other end of the support rod is connected to the upper end of the guide plate. The end of the support rod 21 away from the guide plate 2 is slidably arranged on the annular guide rail 1. A feeding gap is formed between the lower end of the guide plate 2 and the inner wall. The feeding gap is aligned with the top casting port of the next pipe section.
[0034] In this embodiment, the width of the feeding gap is less than 100 mm. The distance between the lower end of the guide plate and the inner wall of the previous pipe section is smaller than the distance between the inner wall of the next pipe section of the top pipe and the inner wall of the previous pipe section.
[0035] Side baffles 3 are formed on opposite sides of the guide plate 2. The side baffles 3 and the upper surface of the guide plate 2 are enclosed to form a material discharge channel.
[0036] Combination Figure 1 and Figure 2 As shown, in this embodiment, a slide groove is formed at the top of the annular guide rail 1. Preferably, the annular guide rail is made of steel, such as channel steel. The slide groove is arranged along the circumferential direction of the annular guide rail 1. A second roller is installed at one end of the support rod 21. The second roller is slidably arranged in the slide groove. The first roller and the second roller can slide along the circumferential direction of the inner wall of the previous pipe section respectively.
[0037] As a preferred embodiment, a groove wall of the slide groove away from the inner wall is installed with an anti-slip rib 11. The support rod 21 is installed with a limiting member 211. The limiting member 211 abuts against the bottom of the anti-slip rib 11.
[0038] The anti-slip ribs are arranged along the length direction of the slideway. The stopper at one end of the support rod is L-shaped. The lower part of the stopper abuts against the anti-slip ribs to prevent the entire device from tipping over.
[0039] In this embodiment, the side baffle is in a triangular shape as a whole. The upper part of the side baffle 3 is connected to the support rod 21.
[0040] Combination Figure 1 and Figure 3As shown, the lower end of the guide plate 2 is hinged with a baffle plate 23. The lower side of the baffle plate 23 abuts against the outer side of the inner template 5 of the next pipe section. The inner side of the baffle plate is connected with an elastic member 24. The elastic member 24 presses against the top of the inner template 5.
[0041] When pouring concrete for the next pipe section, the lower side of the support plate is pressed against the inner side of the inner formwork of the next pipe section, and the elastic part is embedded in the top surface of the inner formwork and pressed against the top surface of the inner formwork, so that when the concrete is poured into the top pouring port of the next pipe section, it will not splash out between the guide plate and the top surface of the inner formwork of the next pipe section.
[0042] As a preferred embodiment, the elastic member 24 is a rubber rib. The rubber rib is arranged along the length direction of the inner template 5.
[0043] The reverse pipe jacking shaft wall hanging sliding concrete pouring device of the present invention is suitable for the reverse pipe jacking shaft wall structure concrete pouring construction, by arranging an annular guide rail on the poured shaft wall structure (i.e., the previous pipe section), using steel plates to process the guide plate for oblique concrete pouring, and installing the first roller, thereby realizing sliding concrete pouring. This device only needs to manually support the pump pipe and push the guide plate to realize the concrete pouring of the next pipe section, thereby improving the concrete pouring efficiency and reducing the work intensity of the operators.
[0044] In this embodiment, the guide plate is welded by 10 mm thick steel plate, with a width of 600 mm and a height of 550 mm. The guide plate is mainly composed of concrete baffles on both sides and an external concrete pocket plate, and support plates are welded on the upper and lower sides of the guide plate.
[0045] The second roller is installed on the upper end of the guide plate through the support rod, and the first roller is installed on the lower end of the guide plate. There is one roller on each of the four corners of the guide plate. In addition, to prevent overturning during sliding, a 10cm steel plate is welded at one end of the support rod to form an "L"-shaped limiter.
[0046] The circular guide rail is mainly made of 12# channel steel, which is fixed to the poured concrete shaft wall structure by M6 expansion wire, with a spacing of 1000mm. It is set continuously on the four sides of the poured concrete shaft wall structure. When fixing the circular guide rail, the bottom of the guide plate can be 100mm higher than the top of the shaft wall template to be poured according to the height of the guide plate. In order to prevent overturning during sliding, φ16 steel bars are welded on the top of the wing plate at the edge of the channel steel as anti-slip reinforcement.
[0047] The present invention provides a construction method of a reverse pipe jacking well wall hanging sliding type concrete pouring device, comprising the following steps:
[0048] S1. Before pouring the next pipe section of the jacking pipe, the annular guide rail 1 is installed on the inner wall of the previous pipe section 4 of the jacking pipe.
[0049] S2. Slide one end of the support rod 21 at the upper end of the guide plate 2 onto the annular guide rail 1, and the first roller 22 at the lower end of the guide plate 2 abuts against the inner wall, so that the feeding gap formed between the lower end of the guide plate 2 and the inner wall is aligned with the top casting port of the next pipe section.
[0050] S3. Concrete is poured into the discharge channel formed between the upper surfaces of the side baffle 3 and the guide plate 2 through the concrete pump pipe 6, so that the concrete is poured into the top pouring port through the feeding gap.
[0051] S4, sliding the guide plate 2 along the circumferential direction of the annular guide rail 1 to the next construction position to cast the next section of the next pipe segment.
[0052] The construction method of the reverse pipe jacking well wall hanging sliding concrete pouring device of the present invention is to install the annular guide rail on the inner wall of the previously poured pipe section before pouring the concrete of the next pipe section. On the poured well wall structure, according to the size of the guide plate, ensure that the bottom of the guide plate is 100mm away from the top of the inner template of the well wall structure to be poured, use M6 expansion bolts with a spacing of 1000mm, and fix continuous 12# channel steel along the well wall as annular guide rail.
[0053] After the annular guide rail is installed and fixed, the guide plate is hung, the pump pipe is manually supported to make the concrete flow into the upper end of the guide plate, and the guide plate is manually pushed to continuously pour the concrete in layers.
[0054] After the concrete pouring is completed, remove the hanging sliding concrete pouring device, remove the expansion bolts, remove the channel steel track, clean it and recycle it.
[0055] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.
Claims
1. A wall-hanging sliding concrete pouring device for a top-down pipe well, characterized in that: include: The annular guide rail is detachably mounted on the inner wall of the upper pipe section of the top pipe; A guide plate arranged obliquely, wherein a first roller abutting against the inner wall is installed at the lower end of the guide plate, a support rod is connected to the upper end of the guide plate, and an end of the support rod away from the guide plate is slidably arranged on the annular guide rail, and a feeding gap is formed between the lower end of the guide plate and the inner wall, and the feeding gap is aligned with the top pouring port of the next pipe section; Side baffles are formed on opposite sides of the guide plate, and the side baffles and the upper surface of the guide plate are enclosed to form a material discharge channel.
2. The reverse pipe jacking shaft wall hanging sliding type concrete pouring device according to claim 1 is characterized in that: A slide groove is formed at the top of the annular guide rail, and the slide groove is arranged along the circumferential direction of the annular guide rail. A second roller is installed at one end of the support rod, and the second roller is slidably arranged in the slide groove.
3. The reverse pipe jacking shaft wall hanging sliding type concrete pouring device according to claim 2 is characterized in that: A groove wall of the sliding groove away from the inner wall is provided with an anti-slip rib, and a limiting member is provided on the support rod, and the limiting member abuts against the bottom of the anti-slip rib.
4. The reverse pipe jacking shaft wall hanging sliding type concrete pouring device according to claim 1 is characterized in that: The upper portion of the side baffle is connected to the support rod.
5. The reverse pipe jacking shaft wall hanging sliding type concrete pouring device according to claim 1 is characterized in that: The lower end of the guide plate is hinged with a support plate, the lower side of which abuts against the outer side of the inner template of the next pipe section, and the inner side of the support plate is connected with an elastic member, which presses against the top of the inner template.
6. The reverse pipe jacking shaft wall hanging sliding type concrete pouring device according to claim 5 is characterized in that: The elastic member is a rubber rib, and the rubber rib is arranged along the length direction of the inner template.
7. A construction method for a reverse pipe jacking shaft wall hanging sliding type concrete pouring device as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Before pouring the next pipe section of the jacking pipe, installing the annular guide rail on the inner wall of the previous pipe section of the jacking pipe; One end of the support rod at the upper end of the guide plate is slidably disposed on the annular guide rail, and the first roller at the lower end of the guide plate is pressed against the inner wall, so that the feeding gap formed between the lower end of the guide plate and the inner wall is aligned with the top pouring port of the next pipe section; Putting concrete into the discharge channel formed between the side baffle and the upper surface of the guide plate through a concrete pump pipe, so that the concrete is poured into the top pouring port through the feeding gap; The guide plate is slid along the circumferential direction of the annular guide rail to the next construction position to cast the next section of the next pipe section.