U-shaped groove formwork supporting device and construction method thereof

Abstract

The invention provides a U-shaped groove formwork supporting device and a construction method thereof. The U-shaped groove formwork supporting device comprises at least two pieces of T-shaped steel vertically arranged along the side wall of a U-shaped groove, and a plurality of through holes are formed in a web of each piece of T-shaped steel in the length direction of the web at intervals; the fixing rods are detachably arranged in the through holes of the T-shaped steel in a penetrating mode and extend out of the two sides of the web plate; the adjustable supporting assemblies are arranged between the two opposite pieces of T-shaped steel in a crossed mode, and the two ends of each adjustable supporting assembly are connected with the fixing rods on the different pieces of T-shaped steel in an abutting and supporting mode respectively. The problems that a traditional steel pipe scaffold supporting mode is low in construction efficiency, large in material consumption, high in labor cost, poor in adaptability and the like can be solved.

Description

Technical Field

[0001] This invention relates to the field of building construction engineering technology, specifically to a U-shaped channel formwork support device and its construction method. Background Technology

[0002] U-shaped trenches are a common concrete structure in infrastructure projects such as water plant construction and water supply and drainage network renovation. When pouring concrete into these trenches, formwork needs to be installed on the inside and effectively reinforced to ensure the quality of the concrete structure and construction safety. Traditionally, this reinforcement method involves erecting steel pipe and coupler-type scaffolding inside the U-shaped trench as a support system. The entire scaffolding system is then dismantled after the concrete reaches its design strength.

[0003] However, this traditional method has many drawbacks: 1. Cumbersome and inefficient construction: The erection and dismantling of steel pipe scaffolding requires a large number of connectors (couplers), involves many procedures, consumes a lot of manpower and time, and seriously affects the construction progress.

[0004] 2. High material consumption and high cost: It requires a large amount of steel pipes and fasteners, resulting in high material costs, as well as high transportation, warehousing and maintenance costs.

[0005] 3. Poor adaptability: For U-shaped channels with varying widths and depths, the length and connection points of the steel pipes need to be frequently adjusted, making adjustment difficult and hindering standardization and rapid operation. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a U-shaped groove template support device.

[0007] The specific technical solution is as follows: A U-shaped channel template support device, comprising: At least two T-shaped steels are vertically arranged along the sidewall of the U-shaped channel, and each T-shaped steel has multiple through holes spaced apart along the length of the web. Multiple fixing rods, wherein the fixing rods are detachably inserted into the through holes of the T-shaped steel and extend from both sides of the web; and At least two adjustable support components are provided, which are arranged crosswise between two opposite T-shaped steel sections, and the two ends of the adjustable support components are respectively supported by fixed rods on different T-shaped steel sections. Each of the adjustable support components includes: Two support sleeves; A threaded rod with both ends coaxially arranged with the two support sleeves and disposed within the support sleeves; An electric screw rotator, fixedly sleeved at the connection between the threaded rod and a support sleeve, is used to drive the threaded rod to rotate relative to the support sleeve, thereby adjusting the overall length of the adjustable support assembly; and Two ends are respectively connected to the end of the support sleeve away from the threaded rod, and the ends are provided with grooves for engaging with the fixing rod.

[0008] Optionally, the adjustable support assembly further includes a threaded tray threaded to the threaded rod and detachably connected to one end of the support sleeve by a pin passing through an aligned connection hole, thereby increasing the height of the vertical frame.

[0009] Optionally, the threaded tray is provided with a hole for inserting a pin. After the pin is inserted into the hole of the support sleeve and the threaded tray, it can prevent the threaded tray from rotating relative to the support sleeve.

[0010] Optionally, one end of the support sleeve is provided with a threaded opening, and the other end is provided with a pin opening; the end is installed on the threaded end of the support sleeve by means of a threaded connection.

[0011] Optionally, the fixing rod is an L-shaped round steel bar, which passes through the through hole of the T-shaped steel bar.

[0012] Optionally, the groove on the end is a semi-circular groove, used for line contact with the cylindrical surface of the fixing rod.

[0013] This invention provides a construction method using the aforementioned trench formwork support device, comprising the following steps: S1: On-site preparation and component assembly: Install multiple fixing rods alternately in both directions into the through holes of the T-shaped steel, and assemble the adjustable support components; S2: Vertical component installation: The two assembled T-shaped steel sections are vertically and tightly laid along the templates on both sides of the U-shaped channel; S3: Cross-bracing installation, at least two adjustable support components are installed in a cross manner between the two T-shaped steels, such that the ends of each adjustable support component are respectively engaged with fixed rods at different heights on the relative T-shaped steels; S4: Adjustment and tightening: Activate the electric screw rotator on the adjustable support assembly to drive the threaded rod to extend or retract until both ends are tightly abutted against the fixed rod, forming a stable cross support system; S5: Check and confirm that all connection points are secure and that the support system is in the same vertical plane.

[0014] Optionally, in step S3, the specific process of cross-bracing installation is as follows: first, a temporary adjustable support component is installed in the middle of the two T-shaped steel sections for temporary fixation; then, two other adjustable support components are installed above and below the temporary component respectively to form a high-low span cross arrangement; finally, the temporary adjustable support component is removed and installed in the same high-low span manner.

[0015] Optionally, it also includes a support system disassembly step, which can be implemented in any of the following ways: Method 1: Use an electric screw rotator to rotate in the opposite direction to retract the threaded rod, release the support force, and then remove the adjustable support assembly; Method 2: Pull out the pin on the threaded tray, rotate the threaded tray to quickly unload, and then remove the adjustable support assembly; Method 3: Tap from the side and pull out the fixing rod on the T-shaped steel to make the adjustable support assembly fall off.

[0016] Optionally, the steps for assembling the adjustable support assembly are as follows: passing the threaded rod through the center hole of the electric screw rotator; screwing the threaded tray onto the threaded rod; fitting a support sleeve onto the threaded rod and inserting it into the threaded tray, and fixing the threaded tray onto the support sleeve with a pin; fitting another support sleeve onto the other end of the threaded rod and inserting it into the electric screw rotator, and fixing it with a pin; finally, installing the two ends onto the threaded ends of the two support sleeves respectively and tightening them.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention employs a combined structure of "T-shaped steel + cross-type adjustable support components," replacing the cumbersome steel pipe fastener system. In particular, the introduction of an electric screw rotator enables electrified and rapid adjustment of the support length, significantly shortening installation and disassembly time, reducing operational difficulty, and thus substantially improving overall construction efficiency.

[0018] By setting multiple rows of holes in the T-shaped steel and using adjustable-length support components, this device can flexibly adapt to U-shaped channels of different sizes with widths ranging from 1 to 2 meters and beyond. The cross-arrangement also enhances the system's adaptability to irregular cross-sections, making it widely applicable.

[0019] T-shaped steel, as a vertical load-bearing component, has good rigidity and strong stability. Two or more adjustable support components form cross supports, constituting a geometrically invariant stable triangular structure, which greatly enhances the lateral stiffness and overall stability of the entire support system, effectively prevents formwork deformation, and ensures construction safety. Attached Figure Description

[0020] Figure 1This is a front view of the overall structure of the support device provided in an embodiment of the present invention; Figure 2 yes Figure 1 A magnified structural diagram of the letter A in the middle; Figure 3 This is a cross-sectional schematic diagram of the adjustable support component in an embodiment of the present invention; Figure 4 This is an exploded view of the adjustable support component in an embodiment of the present invention.

[0021] The following are the reference numerals in the figure: 1. Electric screw rotator; 2. Threaded rod; 3. Threaded tray; 4. Pin; 5. End; 6. Support sleeve; 7. T-shaped steel; 8. Fixing rod. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0025] This embodiment provides a U-shaped channel template support device. Please refer to [link / reference]. Figures 1 to 4 This device is mainly used to support and reinforce the casting templates on both sides of the U-shaped concrete trench.

[0026] like Figure 1 As shown, the support device of the present invention is generally composed of vertical members on both sides and a transverse cross support member in the middle. The vertical members are two T-shaped steels 7, which can be 50*100*6*8mm or other specifications selected according to actual load-bearing requirements. Multiple rows of through holes are evenly opened on the web of the T-shaped steel 7 along its vertical direction for installing fixing rods 8. The fixing rods 8 are preferably L-shaped round steels with a diameter of 15mm, whose horizontal sections pass through the through holes of the T-shaped steel 7. The L-shaped bent ends 5 prevent them from sliding out from the other side, making installation convenient and reliable. The transverse cross support member consists of two or more adjustable support components.

[0027] like Figure 1 As shown, two adjustable support components are arranged in an X-shape and connected between the T-shaped steel sections 7 on both sides, forming a stable spatial structure. Please refer to [link / reference]. Figure 3 and Figure 4 The adjustable support assembly includes: two support sleeves 6, a threaded rod 2, an electric screw rotator 1, an end 5, and a threaded tray 3. The electric screw rotator 1 serves as the power core, integrating a motor and a reduction gear set internally, and has a forward / reverse control switch on its outer casing. The electric screw rotator 1 has a through hole, allowing the threaded rod 2 and support sleeves 6 to pass through and rotate relative to each other. The threaded rod 2 is a steel rod with standard trapezoidal or rectangular threads machined on its outer surface, and its adjustment range can be designed to be 500-1200mm to accommodate grooves of different widths. The threaded tray 3 is a disc-shaped or block-shaped part with internal threads, which can be threadedly engaged with the threaded rod 2. One side of the tray is flat and used to abut the end of the support sleeve 6. The threaded tray 3 has at least one radial hole. The pin 4 is a simple cylindrical pin that can be inserted into the hole of the threaded tray 3 and engaged in the pre-set groove or hole at the end of the support sleeve 6, preventing the threaded tray 3 from spinning freely with the threaded rod 2 during adjustment; it can also be inserted into the pre-set groove or hole on the electric screw rotator 1 and another support sleeve 6 to fix the electric screw rotator 1. The end head 5 is installed on the other end of the threaded rod 2 and support sleeve 6 away from the electric screw rotator 1. The end head 5 has a semi-circular groove machined on it, the radius of curvature of which matches the radius of the fixing rod 8, so that it can be stably engaged on the fixing rod 8. The support sleeve 6 is a hollow steel tube with a threaded end for connecting to the end head 5, and a flat end or a structure for engaging with the pin 4. When a longer support distance is required, the support sleeve 6 can be lengthened using a connector. Figure 2 As shown, when the device is connected, the semi-circular groove of the end 5 of the adjustable support component is engaged with the fixed rod 8 extending from the web of the T-shaped steel 7, forming a hinged support point.

[0028] like Figures 1-4 As shown, the construction method of the trench formwork support device provided by the present invention is as follows: Phase 1: Site Confirmation and Equipment Assembly 1. Before entering the construction site, confirm that the double-sided formwork of the U-shaped channel and the timber (or steel) used to transfer the supporting force have been installed according to the design requirements, and that the site inside the channel has been cleaned and is ready for safe construction.

[0029] 2. Transport all components of the device of the present invention (T-shaped steel 7, fixing rod 8, and various parts that make up the adjustable support assembly) to the installation area.

[0030] 3. The operator measures the horizontal spacing between the timbers on both sides of the formwork to determine the approximate length of the required support components.

[0031] 4. Assemble the adjustable support assembly: First, pass the threaded rod 2 through the center hole of the electric screw rotator 1; then, screw the threaded tray 3 onto the threaded rod 2, and fit a support sleeve 6 onto the threaded rod 2 and insert it into the threaded tray 3, fixing the threaded tray 3 onto the support sleeve 6 with a pin 4; next, fit another support sleeve 6 onto the other end of the threaded rod 2 and insert it into the electric screw rotator 1, also fixing it with a pin 4; finally, install the two ends 5 onto the free ends of the threaded rod 2 and the support sleeve 6 respectively and tighten them; assemble the required number of adjustable support assemblies in this way.

[0032] 5. Assemble T-shaped steel 7: According to the preset support point height, insert the fixing rod 8 into the corresponding hole in the web of T-shaped steel 7. To balance the force, adjacent fixing rods 8 can be installed in an alternating manner.

[0033] Phase Two: On-site Installation 1. The installation work starts from one end of the U-shaped channel and proceeds to the other end sequentially.

[0034] 2. Operator 1 moves the two T-shaped steels 7 with the fixed rods 8 already installed to the designated position, so that their flanges are vertically pressed against the wooden blocks on the outside of the template and stabilized.

[0035] 3. Operator 2 moves an assembled adjustable support assembly between the T-beams 7, and first clamps one end 5 of it onto the fixing rod 8 in the middle of one of the T-beams 7.

[0036] 4. Insert the pin 4 into the hole of the threaded tray 3 to lock the threaded tray 3.

[0037] 5. Operator 2 uses a handheld electric screw rotator 1 to drive the threaded rod 2 to extend by rotating it forward or backward until the other end 5 is also firmly locked onto the fixing rod 8 at the corresponding height on the opposite T-shaped steel 7. This component serves as a temporary support to initially fix the position of the T-shaped steel 7 on both sides.

[0038] 6. Install cross bracing: Arrange the second adjustable support assembly in a high-low span manner, for example, by attaching one end to the fixing rod 8 above the left T-shaped steel 7 and the other end to the fixing rod 8 below the right T-shaped steel 7, and use the electric screw rotator 1 to adjust its length and tighten it.

[0039] 7. Install the third adjustable support component so that it intersects with the second component, i.e., one end is locked onto the fixing rod 8 below the left T-shaped steel 7, and the other end is locked onto the fixing rod 8 above the right T-shaped steel 7. Adjust and tighten accordingly.

[0040] 8. At this point, a stable cross-support unit has been formed; remove the temporary support assembly installed in step 5 and use it as one of the cross-support sleeves 6 of the next support unit, and continue to repeat the above installation process along the length of the U-shaped groove.

[0041] Phase 3: Installation Completion Confirmation 1. Conduct a comprehensive inspection after the entire support system is installed.

[0042] 2. Key checks: whether the support sleeve 6 and the threaded tray 3 are tightly fitted; whether the semi-circular groove of the end 5 and the fixing rod 8 are tightly fitted and centered under force; whether the T-shaped steel 7 on the left and right sides and the cross adjustable support components are basically in the same vertical plane, without obvious twisting or skewing.

[0043] 3. Only after confirming that all connections are secure and reliable can the next step, namely concrete pouring, be carried out.

[0044] Phase 4: Dismantling of the support system 1. Once the concrete structure has reached the design or specification requirements, the support system can be removed.

[0045] 2. This invention provides three flexible disassembly methods: Method 1 (Electric Retraction): Use the electric screw rotator 1 to rotate in the opposite direction to retract the threaded rod 2. After releasing the support force, the entire adjustable support assembly can be easily removed. This method is the most labor-saving and efficient.

[0046] Method 2 (Manual Unloading): When it is inconvenient to use the power supply or the power tools are malfunctioning, the pin 4 on the threaded tray 3 can be pulled out, and then the threaded tray 3 can be manually rotated to make it move backward along the threaded rod 2. This can also quickly unload the support force, and then the component can be removed.

[0047] Method 3 (Quick Removal): In an emergency requiring extremely rapid removal, you can directly use a hammer or other tools to strike the fixing rod 8 from the side and pull it out of the hole in the T-shaped steel 7. The adjustable support component above will fall due to the loss of its fulcrum. This method is the fastest, but you need to pay attention to the safety of the people below.

[0048] Furthermore, in some projects, the vertical load-bearing components may not be T-shaped steel 7, but rather square steel tubes or H-shaped steel. Therefore, the contact surface of the end 5 can be designed in other shapes, such as V-grooves (for mating with the edges of square steel tubes) or flat surfaces (for mating with the flanges of H-shaped steel), to enhance the stability of the connection. These different shaped end 5s can be used as replaceable accessories, selected according to the actual site conditions.

[0049] For ultra-wide U-shaped channels exceeding 2 meters in width, a single support sleeve 6 and threaded rod 2 may be insufficient in length. In this embodiment, the support sleeve 6 can be designed as a multi-section standard-length module, with each section connected by high-strength bolts or a dedicated sleeve connector, thereby achieving arbitrary length expansion and greatly enhancing the applicability of the device.

[0050] Support methods for asymmetrical or inclined trenches: This device remains applicable even when the heights on both sides of the U-shaped channel are uneven or the sidewalls have a certain angle of inclination. During installation, simply lay the T-shaped steel sections 7 along their respective template surfaces. Since the adjustable support assembly is hinged at both ends via fixed rods 8, it can freely adapt to non-horizontal or non-perpendicular relationships between the T-shaped steel sections 7. During adjustment and tightening, the axial force provided by the electric screw rotator 1 is automatically decomposed into normal support forces on both templates, still forming an effective support system. When installing the cross support, only ensure that the end 5 is reliably engaged with the fixed rod 8; it is not necessary to ensure that the adjustable support assembly itself is horizontal.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A U-shaped groove template support device, characterized in that, include: At least two T-shaped steels are vertically arranged along the sidewall of the U-shaped channel, and each T-shaped steel has multiple through holes spaced apart along the length of the web. Multiple fixing rods are provided, which are detachably inserted into the through holes of the T-shaped steel and extend from both sides of the web. as well as At least two adjustable support components are provided, which are arranged crosswise between two opposite T-shaped steel sections, and the two ends of the adjustable support components are respectively supported by fixed rods on different T-shaped steel sections. Each of the adjustable support components includes: Two support sleeves; A threaded rod with both ends coaxially arranged with the two support sleeves and disposed within the support sleeves; An electric screw rotator, fixedly sleeved at the connection between the threaded rod and a support sleeve, is used to drive the threaded rod to rotate relative to the support sleeve, thereby adjusting the overall length of the adjustable support assembly; and Two ends are respectively connected to the end of the support sleeve away from the threaded rod, and the ends are provided with grooves for engaging with the fixing rod.

2. The U-shaped groove template support device according to claim 1, characterized in that, The adjustable support assembly also includes a threaded tray threaded to the threaded rod and sleeved at one end of the support sleeve located away from the electric screw rotator.

3. The U-shaped groove template support device according to claim 2, characterized in that, The threaded tray has a hole for inserting a pin. After the pin is inserted into the hole of the support sleeve and the threaded tray, it can prevent the threaded tray from rotating relative to the support sleeve.

4. The U-shaped groove template support device according to claim 1, characterized in that, One end of the support sleeve is provided with a threaded opening, and the other end is provided with a pin opening; the end is installed on the threaded end of the support sleeve by means of a threaded connection.

5. The U-shaped groove template support device according to claim 1, characterized in that, The fixing rod is an L-shaped round steel bar, which is inserted into the through hole of the T-shaped steel bar.

6. The U-shaped groove template support device according to claim 1, characterized in that, The groove on the end is a semi-circular groove, used for line contact with the cylindrical surface of the fixing rod.

7. A construction method using the trench formwork support device according to any one of claims 1-6, characterized in that, Includes the following steps: S1: On-site preparation and component assembly: Install multiple fixing rods alternately in both directions into the through holes of the T-shaped steel, and assemble the adjustable support components; S2: Vertical component installation: The two assembled T-shaped steel sections are vertically and tightly laid along the templates on both sides of the U-shaped channel; S3: Cross-bracing installation, at least two adjustable support components are installed in a cross manner between the two T-shaped steels, such that the ends of each adjustable support component are respectively engaged with fixed rods at different heights on the relative T-shaped steels; S4: Adjustment and tightening: Activate the electric screw rotator on the adjustable support assembly to drive the threaded rod to extend or retract until both ends are tightly abutted against the fixed rod, forming a stable cross support system; S5: Check and confirm that all connection points are secure and that the support system is in the same vertical plane.

8. The construction method of the trench formwork support device according to claim 7, characterized in that, In step S3, the specific process of cross-bracing installation is as follows: First, a temporary adjustable support component is installed in the middle of the two T-shaped steel sections for temporary fixation. Then, two other adjustable support components are installed above and below the temporary component respectively to form a high-low span cross arrangement. Finally, the temporary adjustable support component is removed and installed in the same high-low span manner.

9. The construction method of the trench formwork support device according to claim 7, characterized in that, It also includes a support system disassembly step, which can be achieved in any of the following ways: Method 1: Use an electric screw rotator to rotate in the opposite direction to retract the threaded rod, release the support force, and then remove the adjustable support assembly; Method 2: Pull out the pin on the threaded tray, rotate the threaded tray to quickly unload, and then remove the adjustable support assembly; Method 3: Tap from the side and pull out the fixing rod on the T-shaped steel to make the adjustable support assembly fall off.

10. The construction method of the trench formwork support device according to claim 7, characterized in that, In step S1, the steps for assembling the adjustable support assembly are as follows: passing the threaded rod through the center hole of the electric screw rotator; screwing the threaded tray onto the threaded rod; fitting a support sleeve onto the threaded rod and inserting it into the threaded tray, and fixing the threaded tray onto the support sleeve with a pin; fitting another support sleeve onto the other end of the threaded rod and inserting it into the electric screw rotator, and fixing it with a pin; finally, installing the two ends onto the threaded ends of the two support sleeves respectively and tightening them.

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