Wood-metal mixed adjustable formwork diagonal bracing system and construction method

Abstract

The invention discloses a wood-metal mixed adjustable formwork inclined strut system and a construction method. The inclined strut system comprises vertical wood supports, transverse wood beams, adjustable metal inclined strut assemblies, upper connecting pieces, lower connecting pieces, limiting adjusting assemblies and bottom cushion blocks. The adjustable metal inclined strut assembly is of a telescopic structure and is composed of an outer sleeve and an inner rod, a plurality of sets of positioning holes are formed in the inner rod in the length direction, a locking hole is formed in the outer sleeve, and the length is fixed through a locking piece. The limiting adjusting assembly comprises a plurality of limiting cushion blocks capable of being stacked, and the distance between the formwork and the concrete side wall is adjusted by stacking different numbers of limiting cushion blocks. By means of the wood-metal mixed structure, gear type length adjustment, the modularized limiting cushion blocks and the whole-process construction method, the technical problems that a traditional formwork inclined strut system is low in adjustment precision, the thickness of a protection layer is difficult to control, and material loss is large are solved, and the formwork supporting stability and the construction efficiency can be improved.

Description

Technical Field

[0001] This invention relates to a formwork bracing system and construction method, and more particularly to a wood-metal hybrid adjustable formwork bracing system and construction method. Background Technology

[0002] In building construction, concrete side walls, shear walls, and tall formwork are subjected to significant lateral pressure during concrete pouring. To ensure the stability of the formwork structure, temporary diagonal bracing structures are usually installed on the outside of the formwork for support. Currently, construction sites commonly use materials such as timber, steel pipes, or bamboo poles to manually assemble diagonal bracing systems. These structures largely rely on on-site experience for erection and present the following technical problems:

[0003] First, the support angle is either not adjustable or has low adjustment precision. Most existing diagonal bracing structures are erected at a fixed angle, making it impossible to flexibly adjust according to working conditions such as wall height and foundation slope. Although some adjustable diagonal bracing structures have adjustment functions, the adjustment method is mostly driven by threaded rods, and the adjustment precision is limited by the thread pitch, and there is a lack of effective coordination with the control of formwork spacing.

[0004] Secondly, controlling the thickness of the concrete cover for reinforcing bars is difficult. Traditional bracing structures lack specialized limiting and adjustment components. The spacing between the formwork and the concrete sidewall is often controlled by temporary adjustments using wooden wedges, which are inaccurate and prone to displacement, resulting in large deviations in the thickness of the concrete cover and affecting the durability of the concrete structure. Although existing cover spacers can fix the position of the reinforcing bars, their thickness is fixed and cannot be adjusted, making them unable to adapt to different cover thickness requirements.

[0005] Third, there is significant material waste and low reuse rate. Traditional diagonal bracing systems often use disposable timber for erection, which is prone to cracking and damage after disassembly, resulting in substantial material waste. While metal diagonal bracing can be reused, there is a lack of effective combination solutions with timber supports. Summary of the Invention

[0006] Purpose of the invention: The purpose of this invention is to propose a wood-metal hybrid adjustable formwork bracing system and construction method. By combining wood structure with adjustable metal components, the angle and length of the formwork support can be quickly adjusted, thereby improving the stability, safety and reusability of the formwork support system.

[0007] Technical solution: This invention includes:

[0008] The vertical support components are wooden uprights, which are vertically installed on the outside of the formwork or concrete sidewall;

[0009] The horizontal support member is a wooden beam, which is fixedly connected to the upper part of the vertical support member to abut against the template;

[0010] An adjustable inclined support assembly includes a metal telescopic rod, which consists of an outer tube and an inner rod. The inner rod has multiple sets of positioning holes along its length, and the outer tube has locking holes that mate with the positioning holes. The length is fixed by a locking element passing through the positioning holes and locking holes.

[0011] The adjustable inclined support assembly has an upper connector and a lower connector. The upper end of the adjustable inclined support assembly is connected to the horizontal support member through the upper connector, and the lower end is connected to the vertical support member or the ground foundation through the lower connector.

[0012] A limit adjustment component is disposed between the vertical support member and the template to control the distance between the template and the concrete sidewall;

[0013] A bottom pad is provided at the bottom of the vertical support member.

[0014] The positioning hole on the inner rod engages with the locking hole on the outer tube to form a gear-type length adjustment structure.

[0015] The limiting adjustment component includes at least two stackable limiting pads, and the distance between the template and the concrete sidewall can be adjusted by stacking different numbers of limiting pads.

[0016] The limiting pad can have a variety of preset thickness specifications, and limiting pads of different thickness specifications can be combined and stacked.

[0017] The upper end of the adjustable inclined support assembly is hinged to the horizontal support member via an upper connector, and the lower end is hinged to the vertical support member or the ground foundation via a lower connector.

[0018] The present invention also provides an installation method based on the above system, comprising the following steps:

[0019] Step 1: Install wooden vertical support components on the outside of the template and install bottom pads at the bottom;

[0020] Step 2: Install wooden horizontal support members on the upper part of the vertical support members so that the horizontal support members abut against the template;

[0021] Step 3: Install an adjustable diagonal support assembly between the horizontal support member and the vertical support member;

[0022] Step 4: Adjust the length of the adjustable diagonal support assembly so that the angle of the diagonal brace meets the construction requirements;

[0023] Step 5: Lock the length of the adjustable inclined support assembly;

[0024] Step 6: Install a limiting adjustment component between the vertical support member and the formwork to control the distance between the formwork and the concrete sidewall.

[0025] Preferably, the adjustable inclined support assembly is adjusted using a gear-type adjustment.

[0026] Preferably, when setting the limit adjustment component, the distance between the template and the concrete sidewall is adjusted by stacking different numbers of limit pads.

[0027] The present invention also provides a construction method for a template diagonal bracing system, including the above-mentioned installation method, and further including a disassembly step; the disassembly step includes: removing the limit adjustment component, the adjustable diagonal support component, the horizontal support component, the vertical support component and the bottom pad in the reverse order of installation.

[0028] Preferably, it also includes inspection and maintenance steps during the construction process, which include inspecting the bracing system during the concrete pouring process.

[0029] Beneficial effects: This invention has the following advantages:

[0030] (1) The combination of wooden vertical / horizontal support components and metal adjustable diagonal bracing components utilizes the low cost and easy processing characteristics of wood, and leverages the high strength and adjustability of metal materials to form a mixed support system with reasonable stress. Each component can be disassembled and connected, making it easy to reuse and reducing material consumption.

[0031] (2) By cooperating with the locking holes on the outer tube, a gear-type length adjustment structure is formed, which realizes the rapid and accurate adjustment of the length of the diagonal brace and solves the problems of low adjustment accuracy and inconvenience of traditional diagonal brace.

[0032] (3) A stackable limiting block structure is adopted. By stacking blocks of different quantities or thicknesses, the distance between the formwork and the concrete sidewall can be flexibly adjusted, effectively controlling the thickness of the steel reinforcement protective layer and improving the quality of the concrete structure.

[0033] (4) Form a complete construction method of “installation-inspection-disassembly”, including installation steps, inspection and maintenance steps and disassembly steps, standardize construction operations, and ensure construction quality and safety. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention. Detailed Implementation

[0035] The invention will now be further described with reference to the accompanying drawings.

[0036] Example 1

[0037] like Figure 1As shown, the wood-metal hybrid adjustable formwork bracing system of this embodiment is suitable for temporary support and reinforcement of formwork during the construction of concrete sidewalls, tall formwork, or vertical components. It includes a vertical support component 1, a horizontal support component 2, an adjustable diagonal support assembly 3, an upper connector 4, a lower connector 5, a limit adjustment assembly 6, and a bottom pad 7.

[0038] Vertical support component 1 is a wooden upright brace made of pine or fir, with a cross-sectional dimension of 100mm×100mm×1500mm. The maximum vertical load-bearing capacity of a single component is not less than 20kN. The surface is treated with vacuum pressure for corrosion prevention, impregnated with ACQ preservative agent, and the moisture content is controlled at 12%~18%. Compared with traditional natural drying or painting anti-corrosion processes, this can increase the corrosion resistance life by more than 3 times and prevent the wooden components from cracking and molding in humid environments. Vertical support component 1 is vertically arranged on the outside of formwork 8 or concrete side wall 9, and a bottom pad is set at the bottom to distribute the force between the vertical support component and the ground foundation.

[0039] The horizontal support member 2 is horizontally arranged and fixedly connected to the upper part of the vertical support member 1 to abut against the template 8. The vertical support member 1 and the horizontal support member 2 are fixedly connected by nails, bolts or metal connectors. The horizontal support member 2 is a wooden beam, the same material as the vertical support member 1, with a cross-sectional size of 80mm×100mm and a length range of 1.2m-2.4m, which can adapt to the support requirements of templates of different widths. A rubber buffer pad is set at the abutment point with the template 8. The pad is made of nitrile rubber and has a size of 80mm×80mm×10mm. It is fixed to the end of the beam with adhesive to buffer lateral pressure and prevent local compression deformation of the template.

[0040] The adjustable inclined support assembly 3 includes a metal telescopic rod, consisting of an outer tube and an inner rod. The outer tube is made of steel with an outer diameter of 60mm and a wall thickness of 4mm; the inner rod is made of Q235B steel with an outer diameter of 52mm and a wall thickness of 3mm, and its surface is hot-dip galvanized for corrosion protection, with a zinc layer thickness of not less than 85μm. The inner rod has multiple sets of positioning holes along its length, each 12mm in diameter and spaced 50mm apart, for a total of 12 sets, evenly distributed throughout the effective adjustment section of the inner rod. The outer tube has locking holes that mate with the positioning holes, each 12mm in diameter, located within 100mm of the end of the outer tube. The 50mm hole spacing allows for length adjustment accuracy in increments of 50mm, accommodating fine-tuning needs for different inclined support angles. The inner rod and outer tube are locked together using pins, bolts, or bolts to fix the length of the adjustable inclined support assembly 3.

[0041] Both the upper connector 4 and the lower connector 5 are hinged connections, with a rotation angle range of 0° to 180° at the hinge. This accommodates diagonal bracing angle adjustments of 30° to 60°, covering most formwork construction conditions and ensuring a stable triangular force-bearing system between the diagonal bracing and the vertical and horizontal components. The upper end of the adjustable diagonal support component 3 is hinged to the horizontal support component 2 via the upper connector 4, and the lower end is hinged to the vertical support component 1 via the lower connector 5, forming a triangular support structure that allows the angle of the adjustable diagonal support component 3 to be adjusted.

[0042] The limiting adjustment component 6 is positioned between the vertical support member 1 and the formwork 8 to control the distance between the formwork 8 and the concrete sidewall 9. The distance between the formwork 8 and the concrete sidewall 9 is adjusted by changing the thickness of the limiting blocks, thereby controlling the thickness of the reinforcement protective layer. The limiting adjustment component 6 includes multiple stackable limiting blocks made of high-density polyethylene (HDPE) with various preset thicknesses, including 5mm, 10mm, 15mm, and 20mm, and dimensions of 100mm × 100mm. By stacking different numbers or thicknesses of limiting blocks, the distance can be adjusted from 5mm to 60mm, precisely controlling the distance between the formwork and the concrete sidewall and ensuring that the thickness deviation of the reinforcement protective layer is controlled within ±2mm.

[0043] Bottom pad 7 is set at the bottom of vertical support member 1. Bottom pad 7 is made of C25 precast concrete block or Q235 steel plate. The concrete pad is 200mm×200mm×50mm in size, and the steel plate pad is 200mm×200mm×10mm in size. The maximum bearing capacity of a single block is not less than 50kN. By increasing the bearing area, the concentrated load of the vertical support member is distributed to the ground foundation, avoiding the displacement of the support due to local ground settlement, and preventing the bottom of the wooden member 1 from getting damp and rotting.

[0044] Example 2

[0045] The installation method of the wood-metal hybrid adjustable formwork bracing system in this embodiment includes the following steps:

[0046] Step 1: On the outside of the formwork in the concrete sidewall construction area, install wooden vertical support components at a spacing of 1.5m / piece, with the bottom pads placed in the center and in close contact with the ground to ensure the stability of the vertical support;

[0047] Step 2: Fix wooden horizontal support components on the upper part of the vertical support components, so that the horizontal support components are tightly abutted against the outside of the template through rubber buffer pads. The connection between the vertical and horizontal support components is fastened with double bolts to ensure a firm fixation.

[0048] Step 3: Install adjustable diagonal support components between the horizontal support components and the vertical support components. The diagonal brace is installed at a height of 1.5m to 2.0m from the ground at the middle of the vertical component. The hinged connection is completed through the upper connector and the lower connector to ensure the flexibility of the component's movement and adjustment. The distance from the end is between 100mm and 200mm.

[0049] Step 4: Adjust the length of the adjustable diagonal support assembly by pulling the inner rod and outer tube of the metal telescopic rod. The adjustment accuracy is 50mm / level. The adjustment error of the diagonal brace angle is controlled within ±2° to form a stable triangular support structure.

[0050] Step 5: Use locking devices such as pins, dowels or bolts to lock the metal telescopic rod through the positioning hole and locking hole, and completely fix the length and angle of the inclined support component to prevent displacement during construction;

[0051] Step 6: Install limiting adjustment components between the vertical support members and the formwork. Stack limiting blocks of varying thicknesses according to the required concrete cover thickness. Apply structural adhesive or weather-resistant adhesive to the contact surfaces between the limiting blocks and the wooden support members, ensuring the adhesive dots are at least 10mm in diameter and spaced no more than 100mm apart. This secures the blocks, facilitates later removal, and leaves no adhesive residue. Check the spacing every 30 minutes using a steel ruler or caliper to precisely control the distance between the formwork and the concrete sidewall. The limiting blocks should be flat and fitted, without tilting or suspension, to ensure even stress distribution on the formwork. When stacking multiple blocks, they should be aligned with no significant gaps between layers to prevent eccentric stress. During concrete pouring, the blocks must not loosen, fall off, or shift; otherwise, stop the machine immediately for correction.

[0052] Before concrete pouring, a comprehensive inspection of the bracing system is conducted to confirm that all components are securely connected, locking parts are in place, and limiting pads are accurately positioned. During concrete pouring, an inspection is carried out every 30 minutes, and a comprehensive and detailed inspection is conducted when the concrete reaches 1 / 2, 3 / 4, and full height of the side wall. In case of special construction conditions such as strong winds or vibrations, the inspection frequency is increased to achieve real-time monitoring.

[0053] The inspection indicators include:

[0054] The vertical and horizontal support components are not tilted, cracked, or loose, and the bottom pads are not detached from the ground foundation;

[0055] The adjustable inclined support components have no telescopic displacement, the locking parts are not detached or loose, and the metal telescopic rods are not deformed or corroded;

[0056] The limit adjustment components did not shift or fall off; the distance between the formwork and the concrete sidewall met the design requirements; and the formwork did not bulge, shift, or deform.

[0057] There was no loosening at the upper and lower hinged parts of each connector, and the triangular support structure remained stable.

[0058] Maintenance requirements are as follows:

[0059] If loose connections are found during construction, immediately stop pouring concrete in that area and use appropriate tools to tighten the connectors and locking parts.

[0060] If slight deformation is found in the metal telescopic rod, it should be corrected in time; if the deformation is serious, it should be replaced immediately. If the locking part falls off, replace it with a locking part of the same specification and relock it.

[0061] When the limiting pads shift, readjust the pad thickness and fix them to ensure accurate template spacing;

[0062] If cracks or tilting occur in the supporting components, temporary supports should be added immediately, and the damaged components should be replaced before construction can resume.

[0063] Emergency response measures are as follows:

[0064] If obvious bulging or displacement of the formwork is found, stop concrete pouring immediately, quickly add temporary diagonal bracing and vertical support in the area to reinforce the formwork system, and after the formwork is reset and confirmed to be stable, investigate and deal with the problem of the diagonal bracing system.

[0065] If there is a risk of partial collapse of the bracing system, immediately organize the construction personnel to evacuate to a safe area, cut off the construction power in the area, set up warning signs, and after a special reinforcement plan is formulated, it shall be handled by professionals. Risky construction is strictly prohibited.

[0066] In the event of emergencies such as heavy rain or earthquakes, construction must be stopped immediately, and the diagonal bracing system must be fully reinforced. Construction can only resume after the danger has been eliminated and a comprehensive inspection has been conducted and the system is deemed qualified.

[0067] Example 3

[0068] This embodiment provides a construction method for a formwork bracing system, including the above-mentioned installation method and disassembly steps. The disassembly steps include:

[0069] Disassembly preparation:

[0070] Confirm that the concrete sidewall strength meets the design demolding strength requirements and obtain the demolding construction instruction;

[0071] Prepare disassembly tools such as wrenches, pry bars, hammers, and measuring tapes; clear construction debris around the diagonal bracing system; and plan the component stacking and transportation routes.

[0072] Provide dismantling technology briefings to construction personnel, clarifying the dismantling sequence, safety precautions, and component protection requirements.

[0073] The disassembly sequence is the reverse of the installation sequence, following the principle of "support first, disassemble later" and "support last, disassemble first," specifically including:

[0074] Step 1: Remove the limit adjustment assembly, remove the limit pads one by one, and sort and stack them to prevent loss or damage;

[0075] Step 2: Remove the adjustable inclined support assembly. First, use a wrench to remove the locking piece, slowly adjust the metal telescopic rod to shorten its length, and then disassemble the lower connector and the upper connector in sequence. Disassemble the metal telescopic rod into an inner rod and an outer tube, and take precautions against corrosion.

[0076] Step 3: Remove the horizontal support components, use tools to loosen the connection between the vertical and horizontal support components, and remove the horizontal wooden beams smoothly to prevent collision damage to the rubber buffer pads.

[0077] Step 4: Remove the vertical support components, slowly lower the vertical wooden supports, and move them steadily to the designated area to avoid breaking the components;

[0078] Step 5: Remove the bottom pad, clean the surface of the pad with dirt and concrete residue, and perform a thorough cleaning.

[0079] Disassembly tools and operating requirements:

[0080] When disassembling connectors and locking parts, use a wrench of the correct specification. Do not use force to pry them apart to prevent damage to the connecting parts.

[0081] When disassembling wooden support components, use a pry bar to slowly pry the connecting parts to avoid directly hammering and causing the components to crack.

[0082] When disassembling the metal telescopic rod, handle it gently to prevent the metal components from being deformed by collision, and clean the surface stains promptly after disassembly.

[0083] Post-disassembly precautions:

[0084] After all components are disassembled, they should be stacked according to the categories of "wooden components, metal components, connectors, and spacers," and the stacking area should be properly protected against moisture and corrosion.

[0085] Damaged components should be classified and labeled, and repaired, corrected or replaced in a timely manner to ensure that they can be used normally in the next construction.

[0086] Clean up construction waste in the construction area and restore the on-site construction environment.

[0087] Example 4

[0088] Construction of concrete sidewalls for deep foundation pit of mixing workshop

[0089] I. Test Plan

[0090] 1. Test Scenario

[0091] The construction of the concrete sidewalls in the mixing workshop was carried out in three construction sections. Each section had a sidewall length of 15m, a height of 3.0m, and a wall thickness of 200mm. The designed steel reinforcement protective layer thickness was 25mm. The construction environment was normal temperature of 20±5℃, without extreme weather such as strong winds and rainstorms. The foundation was compacted backfill soil with a compaction degree of ≥95%, which met the standard working conditions for conventional residential shear wall construction.

[0092] 2. Test Object

[0093] Test group: The wood-metal hybrid adjustable formwork bracing system of this application was assembled according to the technical parameters in the instruction manual. The limiting pads were made of 10mm+15mm HDPE pads stacked together. The metal telescopic rods were adjusted to the appropriate length and the bracing angle was 45°.

[0094] Control group: The existing traditional timber + steel pipe diagonal bracing system uses 50mm×100mm timber and φ48×3.5mm steel pipes to be manually erected, with the support angle fixed at 45°. There are no special limiting blocks, and wooden wedges are used to temporarily adjust the spacing.

[0095] 3. Testing Methods

[0096] 1) Support angle adjustment range test: Adjust the two sets of diagonal bracing systems respectively, record the maximum and minimum achievable support angles, and verify the adjustment flexibility;

[0097] 2) Installation efficiency test: Select a 3m long side wall as the test section for each group, arrange 3 construction workers of the same level to install two sets of diagonal bracing systems respectively, record the total time from component placement to installation completion, and take the average value of 3 test sections;

[0098] 3) Support stability test: The concrete is poured in 3 layers, each layer is 1.0m high, and the pouring speed is 2m³ / h. The displacement and vibration of the diagonal bracing components are monitored in real time. 24 hours after the completion of the pouring, the formwork and support system are checked for tilting or loosening.

[0099] 4) Reusability test: After the construction of this section is completed, the two sets of diagonal bracing components are removed according to the corresponding dismantling process. The number of components that can be directly reused or can be used after simple repair is counted, and the reuse rate is calculated.

[0100] 5) Material loss rate test: During the installation and disassembly of the two sets of diagonal bracing systems, the number of components that were damaged, cracked, deformed, or corroded and could not be repaired, as well as the amount of material loss, were counted, and the material loss rate was calculated.

[0101] 6) Template displacement deviation test: Before pouring, during pouring, after each layer is poured, and 24 hours after pouring, use a total station to monitor the displacement of 5 fixed points on the template surface, 2 points each at the top, middle, and bottom, and 1 point at the inside and outside corners, and take the maximum displacement deviation value.

[0102] 7) Reinforcing bar cover thickness control accuracy test: After 7 days of concrete curing, a reinforcing bar cover measuring instrument was used to randomly select 20 test points in each test section to measure the thickness of the reinforcing bar cover, calculate the deviation value, and count the number of points that meet the design requirements of ±5mm and the maximum deviation value.

[0103] 4. Testing equipment

[0104] Total station model: Topcon GTS-102N, accuracy: ±2″; Rebar cover tester model: HC-CS200, accuracy: ±1mm; Electronic stopwatch accuracy: 0.01s; Level model: DSZ2, accuracy: ±2mm / km; Measuring tape accuracy: ±1mm; Vibration detector model: VM-63A, accuracy: ±0.1mm / s.

[0105] II. Test Results and Quantitative Comparison

[0106]

[0107] Example 5: Complex Construction Conditions of High-Rise Formwork Support

[0108] I. Test Plan

[0109] 1. Test Scenario

[0110] The construction of the automated warehouse in this project involves the construction of high-rise formwork in two areas. Each area has a formwork height of 6.0m, a length of 10m, and a thickness of 300mm. The design thickness of the steel reinforcement protective layer is 30mm. The construction environment is at a normal temperature of 22±3℃. The foundation is a C15 concrete cushion layer with a thickness of 100mm. This is a high-risk construction condition for high-rise formwork, which requires higher stability of the support and higher precision of adjustment.

[0111] 2. Test Object

[0112] Test group: The metal telescopic rod of the wood-metal hybrid adjustable formwork bracing system of this application has an adjustment range of 0.8m~1.5m. The limiting pads are made of 5mm, 10mm and 20mm HDPE pads stacked together. The bracing angle is adjusted to 35° and 55° according to the formwork height. A transverse reinforcing support is added in the middle.

[0113] Control group: The existing traditional timber + steel pipe diagonal bracing system uses 100mm×100mm timber and φ48×3.5mm steel pipes for construction, with the addition of a ground sweeping rod. The support angle is fixed at 45°, and wooden wedges are used to adjust the spacing. There is no special limiting structure.

[0114] 3. Testing Methods

[0115] The test method is consistent with that in Example 1, with the addition of "accuracy test of diagonal brace length adjustment": adjust the metal telescopic rod and record the adjustment length at different levels to verify the adjustment accuracy of 50mm / level; add "long-term stability test": check the deformation and loosening of the support system after 7 days and 14 days of concrete curing.

[0116] 4. Testing equipment

[0117] Based on the testing equipment in Example 1, an electronic force gauge (model: HF-1000, accuracy: ±1N) was added to detect the stress on the diagonal bracing component; a vernier caliper (accuracy: ±0.02mm) was added to detect the adjustment accuracy of the metal telescopic rod.

[0118] II. Test Results and Quantitative Comparison

[0119]

[0120] The two embodiments respectively cover two typical construction conditions: conventional factory sidewalls and tall formwork. The test data are authentic and traceable, fully demonstrating that the wood-metal hybrid adjustable formwork bracing system of this application has significant advantages over existing traditional bracing systems in core indicators such as the range of support angle adjustment, installation efficiency, support stability, reusability, material loss rate, formwork displacement deviation, and control accuracy of rebar protective layer thickness. Among them, the installation efficiency is improved by more than 40%, the support stability is improved by more than 75%, the reusability rate is improved by more than 57 percentage points, the material loss rate is reduced by more than 57 percentage points, and the deviations of formwork displacement and rebar protective layer thickness are reduced by more than 75%. It can effectively solve many defects of traditional bracing systems, adapt to different construction conditions, improve construction efficiency, project quality, and construction safety, and has extremely high practical value and promotion significance.

Claims

1. A wood-metal hybrid adjustable formwork bracing system, characterized in that, include: The vertical support member (1) is a wooden upright, which is set vertically on the outside of the formwork or concrete side wall; The horizontal support member (2) is a wooden beam, which is fixedly connected to the upper part of the vertical support member (1) and is used to abut against the template (8). Adjustable inclined support assembly (3) includes a metal telescopic rod, the metal telescopic rod includes an outer tube and an inner rod, the inner rod is provided with multiple sets of positioning holes along the length direction, the outer tube is provided with a locking hole that cooperates with the positioning hole, and the length is fixed by a locking member passing through the positioning hole and the locking hole; The upper part of the adjustable inclined support assembly (3) is connected to the horizontal support member (2) through the upper part of the connector (4) and the lower part is connected to the vertical support member (1) or the ground foundation through the lower part of the connector (5). Limit adjustment component (6) is set between vertical support member (1) and template (8) to control the distance between template (8) and concrete side wall (9); Bottom pad (7) is set at the bottom of the vertical support member (1).

2. The wood-metal hybrid adjustable formwork bracing system according to claim 1, characterized in that, The positioning hole on the inner rod engages with the locking hole on the outer tube to form a gear-type length adjustment structure.

3. The wood-metal hybrid adjustable formwork bracing system according to claim 1, characterized in that, The limiting adjustment component (6) includes at least two stackable limiting pads, and the distance between the template and the concrete side wall can be adjusted by stacking different numbers of limiting pads.

4. The wood-metal hybrid adjustable formwork bracing system according to claim 3, characterized in that, The limiting pad has a variety of preset thickness specifications, and limiting pads of different thickness specifications can be combined and stacked.

5. The wood-metal hybrid adjustable formwork bracing system according to claim 1, characterized in that, The upper end of the adjustable inclined support component (3) is hinged to the horizontal support component (2) through the upper connector (4), and the lower end is hinged to the vertical support component (1) or the ground foundation through the lower connector (5).

6. An installation method for the wood-metal hybrid adjustable formwork bracing system according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Install wooden vertical support components on the outside of the template and install bottom pads at the bottom; Step 2: Install wooden horizontal support members on the upper part of the vertical support members so that the horizontal support members abut against the formwork; Step 3: Install adjustable diagonal support components between the horizontal support members and the vertical support members; Step 4: Adjust the length of the adjustable diagonal support assembly to ensure that the angle of the diagonal brace meets the construction requirements; Step 5: Lock the length of the adjustable diagonal support assembly; Step 6: Install a limit adjustment component between the vertical support member and the formwork to control the distance between the formwork and the concrete sidewall.

7. The installation method of the wood-metal hybrid adjustable formwork bracing system according to claim 6, characterized in that, When adjusting the length of the adjustable inclined support component in step 4, a gear-type adjustment is used.

8. The installation method of the wood-metal hybrid adjustable formwork bracing system according to claim 6, characterized in that, When setting the limit adjustment component in step 6, the distance between the template and the concrete side wall is adjusted by stacking different numbers of limit pads.

9. A construction method for a formwork diagonal bracing system, characterized in that, The wood-metal hybrid adjustable formwork bracing system according to any one of claims 1-5 and the installation method according to any one of claims 6-8 further includes a disassembly step; the disassembly step includes: removing the limit adjustment component, the adjustable diagonal support component, the horizontal support component, the vertical support component and the bottom pad in the reverse order of installation.

10. The construction method of the formwork bracing system according to claim 9, characterized in that, It also includes inspection and maintenance steps during the construction process, including inspection of the bracing system during concrete pouring.

Images