Formwork structure of secant pile row pile guide wall

Abstract

The utility model discloses a template structure of a secant pile row pile guide wall, which comprises two special-shaped templates, each special-shaped template comprises a plurality of arc-shaped plates, the adjacent sides of the arc-shaped plates are connected to the adjacent sides of the adjacent arc-shaped plates, a plurality of arc-shaped back ridges are arranged on the inner arc surfaces of the arc-shaped plates, and the arc-shaped back ridges are arranged on the inner arc surfaces of the arc-shaped plates. The multiple arc-shaped back ridges are arranged at intervals in the length direction of the arc-shaped plates, connecting back ridges are connected between the ends of the multiple arc-shaped back ridges on every two adjacent arc-shaped plates, the connecting back ridges are arranged in the length direction of the arc-shaped plates, and the inner arc faces of the multiple arc-shaped plates of the two-face special-shaped formwork are oppositely arranged. The two supporting frames are vertically arranged, and the connecting back ridges on the two special-shaped formworks are connected to the opposite sides of the two supporting frames; and the two ends of each supporting rod assembly are connected to the two supporting frames correspondingly. The utility model solves the problems of large assembly error and easy deviation of the existing steel template for the construction of the secant pile guide wall.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a formwork structure for the guide wall of a row of secant piles. Background Technique

[0002] In the construction of underground subway stations, the open cut method is often used for the excavation of the station foundation pit. When constructing by the open cut method, considering factors such as foundation pit dewatering, secant piles can be used as the foundation pit support and water stop structure. Before the construction of the secant piles, a reinforced concrete guide wall is generally constructed first to determine the pile positions of the secant piles by using the guide wall.

[0003] The steel formworks used in the traditional construction of secant pile guide walls are all simply assembled, but the assembly errors are relatively large, and it is difficult to measure and set out the positions accurately, making it difficult to ensure the measurement accuracy. In addition, the formwork is easily disturbed by the surrounding environment from the completion of formwork installation to concrete pouring, resulting in displacement and other problems.

[0004] The information disclosed in this background section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Content of the Utility Model

[0005] In order to overcome the defects existing in the prior art, a formwork structure for the guide wall of a row of secant piles is provided herein to solve the problems that the steel formworks used in the construction of the existing secant pile guide walls have large assembly errors and are prone to displacement.

[0006] To achieve the above object, a formwork structure for the guide wall of a row of secant piles is provided, including:

[0007] Two-sided special-shaped formworks, the special-shaped formworks include a plurality of arc-shaped plates, the arc-shaped plates have two adjacent sides in the arc-forming direction of the arc-shaped plates, the adjacent sides are connected to the adjacent sides of the adjacent arc-shaped plates, a plurality of arc-shaped backing ribs are installed on the inner arc surface of the arc-shaped plates, the plurality of arc-shaped backing ribs are arranged at intervals along the length direction of the arc-shaped plates, connecting backing ribs are connected between the ends of the plurality of arc-shaped backing ribs on two adjacent arc-shaped plates, the connecting backing ribs are arranged along the length direction of the arc-shaped plates, and the inner arc surfaces of the plurality of arc-shaped plates of the two-sided special-shaped formworks are arranged oppositely;

[0008] Two support frames arranged between the two-sided special-shaped formworks, the support frames are arranged vertically, and the connecting backing ribs on the two-sided special-shaped formworks are connected to the opposite sides of the two support frames;

[0009] A plurality of support rod assemblies with adjustable lengths, and two ends of the support rod assemblies are respectively connected to the two support frames.

[0010] Further, the support rod assembly includes:

[0011] Two coaxial screws, with the opposite ends of the two screws respectively connected to the two support frames;

[0012] A threaded sleeve, with the two ends of the threaded sleeve respectively screwed to the opposite ends of the two screws.

[0013] Furthermore, the spiral directions of the external threads of the two screws are opposite.

[0014] Furthermore, the multiple support rod assemblies are arranged in a matrix.

[0015] Furthermore, the support frame includes:

[0016] Two columns, which are arranged oppositely, and the two columns are respectively connected to the connecting back ribs at the opposite ends of the special-shaped formwork;

[0017] At least two cross beams, which are connected between the two columns, and the multiple support rod assemblies are connected between the cross beams of the two support frames.

[0018] Furthermore, the cross beam is connected between the ends of the two columns.

[0019] The beneficial effect of the present utility model is that when the formwork structure of the secant pile wall guide wall of the present utility model is used for constructing the secant pile wall guide wall, it improves the accuracy of measurement and setting out, and greatly reduces the construction error.

[0020] The formwork aperture of the formwork structure of the secant pile wall guide wall of the present utility model is convenient to adjust, and it is not easy to change again after the adjustment is completed. The formwork structure of the secant pile wall guide wall of the present utility model is convenient to disassemble and will not affect the appearance quality of the concrete.

[0021] The formwork structure of the secant pile wall guide wall of the present utility model improves the construction efficiency of the guide wall and speeds up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects and advantages of the present application will become more obvious:

[0023] Figure 1 It is a schematic structural diagram of the formwork structure of the secant pile wall guide wall of the embodiment of the present utility model.

[0024] Figure 2 It is a side view of the formwork structure of the secant pile wall guide wall of the embodiment of the present utility model.

[0025] Figure 3 It is a schematic diagram of the use state of the formwork structure of the secant pile wall guide wall of the embodiment of the present utility model. Detailed implementation manners

[0026] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than limiting the utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the utility model are shown in the drawings.

[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0028] Referring to Figures 1 to 3 as shown, the present utility model provides a formwork structure for a secant pile row wall guide wall, including: a special-shaped formwork 1, a support frame 2, and a support rod assembly 3.

[0029] Among them, the number of the special-shaped formworks 1 is two.

[0030] Specifically, each special-shaped formwork 1 includes a plurality of arc-shaped plates 11 and a plurality of arc-shaped backing ribs 12.

[0031] The arc-shaped plates 11 have two adjacent sides in the arc-forming direction of the arc-shaped plates 11. The adjacent sides are connected to the adjacent sides of the adjacent arc-shaped plates 11. A plurality of arc-shaped backing ribs 12 are installed on the inner arc surface of the arc-shaped plates 11. The plurality of arc-shaped backing ribs 12 are arranged at intervals along the length direction of the arc-shaped plates 11. A connecting backing rib is connected between the ends of the plurality of arc-shaped backing ribs 12 on the two adjacent arc-shaped plates 11, and the connecting backing rib is arranged along the length direction of the arc-shaped plates 11. The inner arc surfaces of the plurality of arc-shaped plates 11 of the two special-shaped formworks 1 are arranged oppositely.

[0032] Two support frames 2 are arranged between the two special-shaped formworks 1. The support frames 2 are arranged vertically. The connecting backing ribs on the two special-shaped formworks 1 are connected to the opposite sides of the two support frames 2.

[0033] The length of the support rod assembly 3 is adjustable. The number of the support rod assemblies 3 is multiple. The two ends of the support rod assembly 3 are respectively connected to the two support frames 2.

[0034] In this embodiment, the support rod assembly 3 includes: two screw rods 31 and a threaded sleeve 32.

[0035] The two screw rods 31 are arranged coaxially. The opposite ends of the two screw rods 31 are respectively connected to the two support frames.

[0036] The inner part of the threaded sleeve 32 is formed with internal threads. The two ends of the threaded sleeve 32 are respectively screwed to the opposite ends of the two screw rods 31.

[0037] As a preferred embodiment, the spiral directions of the external threads of the two screws 31 are opposite. By rotating the threaded sleeve, the two screws can be moved closer to or away from each other.

[0038] In this embodiment, multiple support rod assemblies 3 are arranged in a matrix.

[0039] As a preferred embodiment, the support frame 2 includes columns 21 and cross beams 22.

[0040] Among them, the number of columns 21 is two. The two columns 21 are arranged oppositely. The two columns 21 are respectively connected to the connecting back ribs at the opposite ends of the special-shaped template 1.

[0041] The number of cross beams 22 is at least two. The cross beams 22 are connected between the two columns 21. Multiple support rod assemblies 3 are connected between the cross beams 22 of the two support frames 2.

[0042] In this embodiment, the cross beam 22 is connected between the ends of the two columns 21.

[0043] The template structure of the secant pile row wall of the present utility model is used for constructing the secant pile row wall, which can improve the measurement and setting-out accuracy and greatly reduce the construction error.

[0044] The template aperture of the template structure of the secant pile row wall of the present utility model can be adjusted conveniently, and it is not easy to change again after the adjustment is completed. The template structure of the secant pile row wall of the present utility model is convenient to disassemble and will not affect the appearance quality of the concrete.

[0045] The template structure of the secant pile row wall of the present utility model improves the construction efficiency of the guide wall and speeds up the construction progress.

[0046] Specifically, before constructing the secant pile guide wall 4, the bottom of the working surface is leveled and compacted to ensure that the template can be placed flat. Marking and positioning are carried out at the bottom of the working surface, and then the special-shaped template (precast steel template) is assembled. The threaded sleeve is rotated in the tightening direction to connect the two special-shaped templates. Then, multiple support frames of the template structure of the secant pile row wall of the present utility model are connected in the length direction of the guide wall with screws, and the template is preliminarily installed through marking and positioning. After the connection is completed, the threaded sleeve is rotated to adjust the distance between the two special-shaped templates (the positioning dimension after the guide wall is poured and formed). During the adjustment, a steel tape measure is used to timely check the dimensions. When the aperture size between the guide walls is too large, continuously adjust the threaded sleeve until the aperture meets the requirements; when the aperture is too small, turn the threaded sleeve in the opposite direction until the aperture meets the requirements. Repeat the above aperture adjustment work until all the positioning apertures of the templates meet the requirements.

[0047] After all the apertures are adjusted, the guide wall steel bars are bound and installed on both sides of the template.

[0048] After the guide wall reinforcement is installed, the prism used for measurement is set up on the measurement control point where the nut is tightened, and the hole position is fine-tuned using a total station (first tie the reinforcement and then fine-tune the template position to effectively prevent the reinforcement tying process from disturbing the template position). After each template unit is fine-tuned, immediately hammer a steel nail into the fixing hole to fix it, and repeat the above operation until all template units are adjusted and fixed.

[0049] In order to prevent the position of the steel formwork from being disturbed when hammering steel nails into the fixing holes, the position of the formwork can be verified using a total station after the fixation is completed, and a normal straight line can be pulled to verify the straightness of the entire length of the formwork.

[0050] When all the above work is completed, the guide wall concrete can be poured. During the concrete pouring process, the position of the formwork should be remeasured in time to prevent disturbance of the formwork during the concrete pouring process. If any abnormality is found, the pouring should be stopped in time and the position of the formwork should be adjusted.

[0051] When connecting the formwork structure of each interlocking pile row and pile guide wall, a layer of foam tape can be pasted on the contact surface. After tightening the connecting screws, the gap in the formwork can be effectively blocked to prevent leakage of slurry from the gap in the formwork during concrete pouring, which will affect the quality of concrete.

[0052] After the concrete reaches the demolition strength requirement, the formwork can be removed. When removing the formwork, you only need to tighten the aperture adjustment nut again to reduce the template positioning aperture to achieve the purpose of separation from the concrete. This can effectively avoid the use of a crowbar to pry open the adhesive part between the formwork and the concrete during conventional formwork removal, thereby avoiding damage to the surface quality of the concrete.

[0053] When the guide wall is cast in sections, the formwork at the end of the previous construction section does not need to be removed and can be used as an auxiliary positioning formwork for the next construction section. The concrete of the previous construction section can also be used to fix the steel formwork for the next construction section to improve the steel formwork's ability to resist disturbance during construction.

[0054] 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 utility model 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 concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A template structure for interlocking pile row guide wall, characterized in that: include: A two-sided special-shaped template, the special-shaped template comprises a plurality of arc-shaped plates, the arc-shaped plates have two adjacent sides in the arc-forming direction of the arc-shaped plates, the adjacent sides are connected to the adjacent sides of the adjacent arc-shaped plates, the inner arc surface of the arc-shaped plates is equipped with a plurality of arc-shaped back ribs, the plurality of arc-shaped back ribs are arranged at intervals along the length direction of the arc-shaped plates, a connecting back rib is connected between the ends of the plurality of arc-shaped back ribs on two adjacent arc-shaped plates, the connecting back ribs are arranged along the length direction of the arc-shaped plates, and the inner arc surfaces of the plurality of arc-shaped plates of the two-sided special-shaped template are arranged relatively; Two supporting frames are arranged between the two special-shaped templates, the supporting frames are arranged vertically, and the connecting back ribs on the two special-shaped templates are connected to the opposite sides of the two supporting frames; A plurality of support rod assemblies with adjustable lengths, wherein two ends of the support rod assemblies are respectively connected to the two supporting frames.

2. The template structure for the interlocking pile row guide wall according to claim 1 is characterized in that: The support rod assembly comprises: Two coaxially arranged screw rods, the opposite ends of the two screw rods being respectively connected to the two supporting frames; The two ends of the threaded sleeve are respectively screwed on the opposite ends of the two screw rods.

3. The template structure of the interlocking pile row guide wall according to claim 2 is characterized in that: The spiral directions of the external threads of the two screws are opposite.

4. The template structure for the interlocking pile row guide wall according to claim 1 is characterized in that: The plurality of support rod assemblies are arranged in a matrix.

5. The template structure for the interlocking pile row guide wall according to claim 1 is characterized in that: The support frame comprises: Two upright posts, the two upright posts are arranged opposite to each other, and the two upright posts are respectively connected to the connecting back ribs at opposite ends of the special-shaped template; At least two cross beams are connected between the two columns, and the plurality of support rod assemblies are connected between the cross beams of the two support frames.

6. The template structure for the interlocking pile row guide wall according to claim 5 is characterized in that: The crossbeam is connected between the ends of the two columns.

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