Slope-adhering type retaining wall formwork structure

Abstract

The utility model relates to slope formula retaining wall formwork structure, including plastic steel formwork, I -steel, triangle reinforcing wooden frame and inner support reinforcement, triangle reinforcing wooden frame is located between I -steel and plastic steel formwork, triangle reinforcing wooden frame is inverted triangle, and when force, slide between I -steel and plastic steel formboard and give plastic steel formwork and I -steel extrusion, the bottom of I -steel is fixed, one end of inner support reinforcement contacts concrete, and one end contacts plastic steel formwork top. I -steel, plastic steel formwork, back ridge wooden frame, triangle reinforcing wooden frame constitute the support system of triangle, I -steel bottom welds steel bar and prevents I -steel from sliding down, plastic steel formwork contacts concrete surface, I -steel is placed in the outermost side, triangle reinforcing wooden frame is placed between plastic steel formwork and I -steel, and downward to triangle reinforcing wooden frame is carried out and is beaten, makes plastic steel formwork and design concrete outside line consistent and can form this set of formwork support system. Compared with the prior art, the utility model has high construction efficiency, high safety and simple structure.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, and in particular to a slope-adhering retaining wall formwork structure for single-sided formwork construction in special environments with steep slopes and difficult support systems. Background Technology

[0002] In water conservancy projects, the formwork support technology for reservoir seepage prevention panels plays a crucial role, especially in special environments with steep slopes and difficult support systems.

[0003] In existing technologies, large formwork support assemblies are mostly used for single-sided formwork construction. However, due to the numerous technical challenges of slope-supported retaining wall formwork, using large formwork support assemblies presents several problems. First, compared to building a construction platform, the requirements for stability, load-bearing capacity, and safety are higher, leading to a greater risk factor. Second, the number of times the formwork can be reused is limited, resulting in a longer construction cycle. Furthermore, the construction process requires the assistance of engineering machinery for hoisting, which raises questions about the feasibility of using such machinery in complex terrain. Additionally, the involvement of large engineering machinery increases costs. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a slope-adhesive retaining wall formwork structure, construction process, and demolding method to solve the problems in the existing technology regarding single-sided construction formwork support in special environments with steep slopes and difficult support systems. This approach aims to eliminate reliance on engineering machinery, improve construction efficiency, meet surface curvature requirements, and control construction costs.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] The construction process for slope-mounted retaining wall formwork is characterized by including:

[0007] (1) Fixing the I-beams at the bottom of the template;

[0008] (2) The installation angle and slope of the plastic steel formwork should be adapted to the requirements, and the formwork back ribs should be set on the back to reinforce the wooden beams. The adjacent two formwork pieces should be reinforced with bolts for stability.

[0009] (3) Installation of the triangular reinforcement back rib of the template, including the I-beam, the template reinforcement back rib and the triangular reinforcement timber. The triangular reinforcement timber is located between the I-beam and the template reinforcement back rib, and the triangular reinforcement timber is subjected to downward force so that the I-beam is fixed to the plastic steel template and the plastic steel template coincides with the outline of the concrete.

[0010] (4) Installation of internal support: When the plastic steel formwork panel coincides with the outer contour of the retaining wall or concrete, support steel bars are used for internal support. One end of the support steel bar contacts the concrete and the other end contacts the top of the plastic steel formwork, forming an internal support angle of 30-60 degrees.

[0011] (5) Concrete pouring, formwork removal and repeating the above steps to achieve secondary pouring.

[0012] Furthermore, the fixing of the I-beams includes: a) during the initial formwork support, the bottom of the I-beams is fixed with expansion bolts; b) during the secondary formwork support and thereafter, U-shaped steel bars are pre-embedded in the concrete and protrude outwards. The ends of the U-shaped steel bars are bent at 60-120° with an anchor length of not less than 10cm, and the straight anchor section has an anchorage length of not less than 15cm. The I-beams are inserted into the U-shaped steel bars, and the protruding part of the U-shaped steel bars cooperates with the fixing part of the I-beams to prevent the I-beams from sliding down.

[0013] Furthermore, the fixing part is to weld a 12-20mm steel bar 20-30cm above the bottom of the I-beam, and the welded steel bar extends at least 2cm beyond both ends of the I-beam.

[0014] Furthermore, one side of the grooved surface of the I-beam faces the plastic steel template, and the thickness of the triangular reinforcing timber matches the grooved surface of the I-beam, allowing the triangular reinforcing timber to slide on the grooved surface of the I-beam.

[0015] Furthermore, the top of the plastic steel formwork is provided with installation holes for pre-embedding U-shaped steel bars. After the U-shaped steel bars are pre-embedded, the empty parts of the installation holes are filled with foaming agent.

[0016] A method for demolding a slope-mounted retaining wall formwork is also provided: characterized in that,

[0017] (1) Take out the triangular reinforced wooden beam from the top;

[0018] (2) Remove the I-beam upwards;

[0019] (3) Remove the connecting bolts of adjacent plastic steel formwork;

[0020] (4) Remove the foaming agent from the U-shaped steel bar installation holes of the plastic steel formwork, raise the U-shaped steel bar, and remove the plastic steel formwork.

[0021] A slope-mounted retaining wall formwork structure is also provided, including a plastic steel formwork, an I-beam, triangular reinforcing timber, and internal supporting steel bars. The triangular reinforcing timber is located between the I-beam and the plastic steel formwork. The triangular reinforcing timber is an inverted triangle and slides between the I-beam and the plastic steel formwork under stress, thus compressing the plastic steel formwork and the I-beam. The bottom of the I-beam is fixed. One end of the internal supporting steel bar is in contact with the concrete, and the other end is in contact with the top of the plastic steel formwork.

[0022] Furthermore, one of the grooves of the I-beam faces the plastic steel template, and the thickness of the triangular reinforcing timber matches the groove of the I-beam, allowing the triangular reinforcing timber to slide within the groove of the I-beam.

[0023] Furthermore, a U-shaped reinforcing bar is embedded at the bottom of the I-beam, through which the I-beam passes. A fixing part is provided on the side of the I-beam facing the outside of the U-shaped reinforcing bar, and the fixing part contacts the U-shaped reinforcing bar to limit the downward movement of the I-beam.

[0024] Furthermore, the bottom of the I-beam is provided with bolt holes for installing expansion bolts.

[0025] Furthermore, the U-shaped steel bars are embedded in the concrete and protrude outwards. The ends of the U-shaped steel bars are bent at 60-120° with an anchor length of not less than 10cm, and the straight anchor section has an anchorage length of not less than 15cm.

[0026] Furthermore, the top of the plastic steel formwork is provided with installation holes for pre-embedding U-shaped steel bars.

[0027] Furthermore, when pre-embedding U-shaped reinforcing bars, the mounting holes are sealed with foaming agent.

[0028] The technical effects of this utility model are:

[0029] The formwork system consists of I-beams, PVC-U formwork, back bracing timber, and triangular reinforcing timber. Reinforcing bars are welded to the bottom of the I-beams to prevent them from sliding down. The PVC-U formwork is in contact with the concrete surface, with the I-beams placed on the outermost side. The triangular reinforcing timbers are placed between the PVC-U formwork and the I-beams. The triangular reinforcing timbers are then hammered downwards to align the PVC-U formwork with the outer edge of the designed concrete, thus forming the formwork support system.

[0030] Compared to traditional support systems, this formwork has a higher turnover rate, lower technical difficulty, and is easier to promote; the construction cycle is short, and 20m² of plastic steel formwork can be installed in one day; the formwork construction is convenient, and no construction machinery is needed for hoisting, so manual lifting and installation are possible; it saves costs, as this method saves costs in terms of construction cycle, auxiliary machinery, and turnover rate.

[0031] This construction method is a new type of formwork reinforcement technology. By reinforcing the formwork on one side, it solves the problem of difficult formwork support in complex environments.

[0032] The components involved in the process of this utility model are all small parts, which can be manually handled and installed. Because of these small parts, the load-bearing requirements of the support platform are relatively low, further saving costs and improving safety. The individual templates of this utility model are small in size, and the assembly angle of multiple templates can be adjusted during assembly, allowing for a closer fit to the curved surface of the slope. Attached Figure Description

[0033] The foregoing and other objects, features and advantages of this invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0034] Figure 1 This is a schematic diagram of the template support structure of this utility model;

[0035] Figure 2 This is a schematic diagram of the I-beam structure of this utility model;

[0036] Figure 3 This is a schematic diagram of the multi-template combined support structure of this utility model;

[0037] Figure 4 This is a schematic diagram of the pre-embedded steel bars of this utility model;

[0038] Figure 5 This is a schematic diagram of the internal support installation of this utility model;

[0039] The attached diagram is labeled as follows: PVC formwork 100, back bracing reinforcement timber 200, I-beam 300, triangular reinforcement timber 400, U-shaped steel bar 500, fixing part 600, mounting hole 700, supporting steel bar 800. Detailed Implementation

[0040] The following embodiments of this utility model serve as inspiration. Through the following description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The scope of protection of this utility model is not limited to the contents of the claims and description.

[0041] The present invention will be further described with reference to the accompanying drawings:

[0042] This utility model applies to formwork support for conventional retaining walls and, in special environments with steep slopes and difficult support systems, formwork support for retaining walls that require close contact with the ground. It can withstand concrete thicknesses ranging from 0 to 2 meters. The application of the 100mm plastic-steel formwork support is not limited to traditional structural support, but also focuses on its reliability and adaptability under extreme conditions. The pre-construction surveying and measurement, as well as related site clearing work, are standard technical methods in this field and will not be elaborated upon further.

[0043] like Figure 1-5 As shown, the construction process of the slope-mounted retaining wall formwork includes,

[0044] Fixing the bottom of the formwork to the 300mm I-beam: The formwork base fixing bars adopt two fixing methods. The first method is fixing with expansion bolts. This fixing method is for the initial formwork support. During the initial support, the formwork has no bottom fixing point, so expansion bolts are needed to provide a fixing point for the bottom of the formwork. The expansion bolts are inserted into the bedrock for no less than 10cm. The second fixing method uses 500mm U-shaped steel bars with a diameter of 10mm for fixing. The ends of the 500mm U-shaped steel bars are bent at 60-120° with an anchor length of no less than 10cm and the straight anchor section has an anchoring length of no less than 15cm.

[0045] Installation of PVC-U formwork 100: The installation angle and slope of the PVC-U formwork 100 should be adapted to the requirements, and a formwork back brace 200 should be installed on the back. Adjacent formwork panels are secured with bolts. The formwork back brace 200 should be able to withstand the lateral pressure of the concrete. A spacing of 10cm to 20cm between the back braces is recommended. Before installation, the stability of the back brace should be checked to prevent bulging of the formwork due to excessive lateral pressure from the concrete.

[0046] Template reinforcement back bracing installation: The template reinforcement back bracing uses a combination of I-beams (300mm) and triangular reinforcing timber (400mm). The I-beams (300mm) are fixed to the template base fixing ribs. A 12-20mm steel bar is welded to the bottom of the I-beam (300mm) 20-30cm upwards, extending 2cm beyond each end. The welding height can be adjusted according to the site slope to integrate with the pre-embedded steel bars at the bottom of the template, increasing the stability of the I-beams (300mm). The triangular reinforcing timber (400mm) is placed between the plastic steel template (100mm) and the I-beams (300mm), applying downward force to gradually fix the I-beams (300mm) and the plastic steel template (100mm). Stress is stopped when the surface of the plastic steel template (100mm) coincides with the outer contour of the designed retaining wall or waterproof concrete panel. To ensure that the trajectory of the triangular reinforcing timber 400 does not deviate when under stress, one side of the grooved surface of the I-beam 300 faces the plastic steel template 100, and the thickness of the triangular reinforcing timber 400 matches the grooved surface of the I-beam 300. The triangular reinforcing timber 400 slides on the grooved surface of the I-beam 300, further achieving structural stability during the reinforcement process.

[0047] Internal support installation: When the surface of the plastic steel formwork 100 coincides with the outer contour of the retaining wall or concrete, internal support is provided by supporting steel bars. One end of the supporting steel bar contacts the concrete, and the other end contacts the top of the plastic steel formwork 100, forming an internal support angle α, 30-60 degrees.

[0048] Two connection points are set at the joint of the two plastic steel formwork 100 to increase the overall stability of the plastic steel formwork 100. The two connection points are respectively located 10-20cm downward from the top and upward from the bottom of the plastic steel formwork 100. The connection points are connected with 8mm steel bars, and one end of the 8mm steel bar is bent and anchored at 90°.

[0049] Concrete pouring begins once the formwork support system is installed and meets relevant measurement requirements. Formwork is removed once the pouring is complete, the concrete strength meets design requirements, and the edges and corners are undamaged.

[0050] Demolding method for sloped retaining wall formwork: as follows.

[0051] (1) Remove the triangular reinforcing wooden beam 400 upwards; (2) Remove the I-beam 300 upwards; (3) Remove the connecting bolts of the adjacent plastic steel template 100; (4) Remove the foaming agent from the plastic steel template 100, the U-shaped steel bar 500 mounting hole 700, raise the U-shaped steel bar 500 upwards, and remove the plastic steel template 100.

[0052] This utility model also provides a slope-fitting retaining wall formwork structure, including a plastic steel formwork 100, an I-beam 300, a triangular reinforcing timber 400, and internal supporting steel bars. The triangular reinforcing timber 400 is located between the I-beam 300 and the plastic steel formwork 100. The bottom of the I-beam 300 is fixed, and the grooved surface of the I-beam 300 faces the plastic steel formwork 100. The thickness of the triangular reinforcing timber 400 matches the groove of the I-beam 300, allowing the triangular reinforcing timber 400 to slide within the groove of the I-beam 300. One end of the internal supporting steel bar contacts the concrete, and the other end contacts the top of the plastic steel formwork 100.

[0053] A triangular system is formed by the I-beam 300, the triangular reinforcing timber 400, and the plastic steel formwork 100. By subjecting the triangular reinforcing timber 400 to force, the plastic steel formwork 100 reaches a predetermined angle, thus stabilizing the formwork structure. To further prevent the triangular reinforcing timber 400 from deviating from its trajectory during the force-bearing process, it is allowed to slide within the groove surface of the I-beam 300, making the formwork structure even more stable.

[0054] The bottom of the I-beam 300 is provided with a pre-embedded U-shaped steel bar 500, through which the I-beam 300 passes. A fixing part 600 is provided on the side of the I-beam 300 facing the outside of the U-shaped steel bar 500, and the fixing part 600 contacts the U-shaped steel bar 500 to limit the downward movement of the I-beam 300.

[0055] By pre-embedding U-shaped steel bars 500, the I-beams 300 of the next module are fixed in place. Combined with the fixing parts 600 on the I-beams 300, the downward movement of the I-beams 300 is restricted when they pass through the U-shaped steel bars 500. This achieves stability at the bottom. Furthermore, the triangular reinforcement of the wooden beams 400 further stabilizes the triangular system.

[0056] Since the U-shaped steel bar 500 bears the weight and pressure of the I-beam 300 and the triangular reinforcing timber 400, its strength is relatively important. Therefore, the U-shaped steel bar 500 is embedded in the concrete and protrudes. The ends of the U-shaped steel bar 500 are bent and anchored at 60-120° with a bending anchor length of not less than 10cm and a straight anchor length of not less than 15cm.

[0057] In order to complete the pre-embedding of U-shaped steel bars 500 in the previous concrete in a timely, efficient and convenient manner, the top of the plastic steel formwork 100 is provided with installation holes 700 for pre-embedding U-shaped steel bars.

[0058] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A batter wall formwork structure comprising a plastic steel formwork, characterised in that, It also includes I-beams, triangular reinforcing timbers, and internal supporting steel bars. The triangular reinforcing timbers are located between the I-beams and the plastic steel formwork. The triangular reinforcing timbers are inverted triangles and slide between the I-beams and the plastic steel formwork when under force, thus compressing the plastic steel formwork and the I-beams. The bottom of the I-beams is fixed. One end of the internal supporting steel bars is in contact with the concrete, and the other end is in contact with the top of the plastic steel formwork.

2. The leaning retaining wall form structure of claim 1, wherein, One of the grooves of the I-beam faces the plastic steel template, and the thickness of the triangular reinforcing timber matches the groove of the I-beam, allowing the triangular reinforcing timber to slide within the groove of the I-beam.

3. The leaning retaining wall form structure of claim 1, wherein, The bottom of the I-beam is provided with a pre-embedded U-shaped reinforcing bar, through which the I-beam passes. A fixing part is provided on the side of the I-beam facing the outside of the U-shaped reinforcing bar, and the fixing part contacts the U-shaped reinforcing bar to limit the downward movement of the I-beam.

4. The leaning retaining wall form structure of claim 1, wherein, The bottom of the I-beam is provided with bolt holes for installing expansion bolts.

5. The leaning retaining wall form structure of claim 3, wherein, The U-shaped steel bars are embedded in the concrete and protrude outwards. The ends of the U-shaped steel bars are bent at 60-120° with an anchor length of not less than 10cm, and the straight anchor section has an anchorage length of not less than 15cm.

6. The leaning retaining wall form structure of claim 1, wherein, The top of the plastic steel formwork is provided with installation holes for pre-embedding U-shaped steel bars.

7. The leaning retaining wall form structure of claim 6, wherein, The mounting holes are sealed with foaming agent when the U-shaped steel bars are pre-embedded.

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