Cast-in-place wall constructional column construction method, formwork-removal-free clamp and formwork-removal-free reinforcing structure

Abstract

The invention provides a cast-in-place wall constructional column construction method, a formwork-removal-free clamp and a formwork-removal-free reinforcing structure. The cast-in-place wall constructional column construction method comprises the following steps that a steel bar frame of a constructional column is installed; and the wall constructional column is divided into multiple sections in the vertical direction according to the preset height, and construction is sequentially conducted section by section from bottom to top. The section-by-section construction method comprises the following steps: building walls with preset heights on the two transverse sides of the steel bar frame; wall plates are installed on the two longitudinal sides of the steel bar frame; mounting a mold-removal-free clamp so as to reinforce the wall plate in the longitudinal direction; concrete is poured at the position of the steel bar frame; and the mold removal-free clamp is removed. The mold-removal-free clamp comprises a clamping mechanism, a supporting piece and an adjusting mechanism. Construction is performed section by section, so that the wallboard can be conveniently reinforced by using a mold-stripping-free clamp, the construction quality of each section of constructional column is ensured, and the construction efficiency is improved; and the supporting piece is detachably connected with the clamping mechanism, so that the mold-removal-free clamp can be detached and reused, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a cast-in-situ wall structure column construction method, a formwork removal-free clamp and a formwork removal-free reinforcing structure. BACKGROUND

[0002] In the prior art, for the construction of cast-in-situ structure columns in the middle of straight-line wall of infill wall masonry, a reinforcing method of hole-punching structure columns by means of through-penetration screw rods is usually adopted. Since the hole-punching exists, the overall quality of the structure columns will be affected to a certain extent. Meanwhile, in the traditional process, the materials of the square timber and the through-penetration screw rods used for formwork reinforcement have a high cost, resulting in a high overall construction cost. SUMMARY

[0003] The present application provides a cast-in-situ wall structure column construction method, a formwork removal-free clamp and a formwork removal-free reinforcing structure, which improves the structural strength of the structure columns and can effectively save the cost.

[0004] In a first aspect, the present application provides a cast-in-situ wall structure column construction method, comprising the following steps: installing a steel reinforcement frame of the structure column; and, dividing the wall structure column into multiple sections in the vertical direction according to the preset height, and sequentially constructing the sections from bottom to top; the wall structure column is divided into a bottom section, a plurality of intermediate sections and a top section from bottom to top, and the bottom section and the intermediate sections are constructed according to the following steps: building a wall of a preset height on the two lateral sides of the steel reinforcement frame in the horizontal direction; installing a wall plate on the two lateral sides of the steel reinforcement frame in the longitudinal direction; installing a formwork removal-free clamp to reinforce the wall plate in the longitudinal direction; pouring concrete at the steel reinforcement frame; and, removing the formwork removal-free clamp; The formwork removal-free clamp comprises a clamping mechanism, a support and an adjusting mechanism. The clamping mechanism is provided on the two lateral sides of the wall in the longitudinal direction and abuts against the wall and the wall plate. The support is detachably connected to the upper part of the two clamping mechanisms and supports the top surface of the wall. The adjusting mechanism is detachably connected between the top parts of the two clamping mechanisms to adjust the distance between the top parts of the two clamping mechanisms.

[0005] The clamping mechanism comprises a clamping column and a plurality of reinforcing members. The clamping column is detachably connected with the support. The clamping column is columnar in the vertical direction. The reinforcing members are arranged in the vertical direction and are all located below the support. The reinforcing members abut against the wall and the wall plate. Each reinforcing member is long strip-shaped. The middle part of each reinforcing member is rotatably arranged in the longitudinal direction and is adjustably connected with the clamping column in the longitudinal direction. The steps of installing the mold-free fixture include: Assembling a plurality of the reinforcement members with the clamping columns; Placing the support member on the top surface of the wall and connecting the clamping column to the support member; installing the adjustment mechanism; Rotating the reinforcement member longitudinally to adjust the angle of the reinforcement member; The adjusting mechanism is adjusted, and the reinforcing member is adjusted longitudinally at the same time, so that the reinforcing member is in close contact with the wall and the wall panel, thereby reinforcing the wall panel.

[0006] There are two groups of mold-free clamps, which are respectively located on the two horizontal sides of the steel frame; and the longitudinal projection of each clamping column is located on the wall.

[0007] Wherein, in the step of installing the adjusting mechanism, the adjusting mechanism is hooked and connected to the clamping column.

[0008] The step of installing the wall panels on both longitudinal sides of the steel frame includes: Placing inner support bars in the tooth groove of the wall, wherein the inner support bars are arranged in the longitudinal direction; The cut wall panels are embedded into the structural columns of the wall, with the inner surface of the wall panels abutting against the inner support bars, and the outer surface of the wall panels being flush with the wall.

[0009] Wherein, the preset height is ≤1m.

[0010] In the second aspect, the present invention provides a form-free clamp for reinforcing wall panels in a form-free reinforcement structure of wall structural columns, comprising a clamping mechanism, a support member and an adjustment mechanism, wherein the two clamping mechanisms are respectively used to be arranged on both longitudinal sides of the wall and abut against the wall and the wall panels; the support member is detachably connected to the two clamping mechanisms for supporting the top surface of the wall; the adjustment mechanism is detachably connected between the tops of the two clamping mechanisms, located above the support member, for adjusting the top spacing of the two clamping mechanisms.

[0011] In which, the clamping mechanism includes a clamping column and multiple reinforcements; the clamping column is detachably connected to the support member; the clamping column is columnar and arranged vertically; multiple reinforcements are arranged vertically and are all located below the support member; the reinforcement is used to abut against the wall and wall panel; each reinforcement is long and strip-shaped; the middle part of each reinforcement is arranged to rotate around the longitudinal direction and is adjustably connected to the clamping column along the longitudinal direction.

[0012] The adjusting mechanism comprises a positioning member, an adjusting screw and an adjusting nut; the positioning member and the adjusting screw are longitudinally arranged; one end of the positioning member is hooked on the top of one clamping column, and the other end is provided with a through hole; one end of the adjusting screw is in abutment with the other clamping column, and the other end is movably arranged in the through hole; the adjusting nut is threadedly connected with the adjusting screw and is in abutment with the other end of the positioning member.

[0013] In a third aspect, the present application provides a removable formwork reinforcing structure, comprising a wall, a steel frame, a wallboard and the removable formwork clamp, the steel frame is provided with the wall on both sides in the transverse direction, and the steel frame is provided with the wallboard on both sides in the longitudinal direction; the removable formwork clamp is provided in two groups, and is located on both sides in the transverse direction of the steel frame. The support member of the removable formwork clamp supports the top surface of the wall, and the clamping mechanism of the removable formwork clamp is in abutment with the wall and the wallboard.

[0014] The present application provides a cast-in-place wall construction column construction method, a removable formwork clamp and a removable formwork reinforcing structure, which are used for sequentially and segmentally constructing the wall construction column structure from bottom to top, facilitating the reinforcement of the wallboard by using the removable formwork clamp, ensuring the construction quality of each segment of the construction column, and improving the construction efficiency; the support member is used in cooperation with the top surface of the wall to support and position the entire removable formwork clamp, and the two clamping mechanisms are located on both sides in the thickness direction of the wall, and the clamping mechanism applies a force to the wallboard from the outside of the wallboard to ensure that the wallboard will not be displaced during the pouring of the concrete; the use of the tension bolt is not required, the overall quality of the construction column is not affected due to the hole, and the strength of the construction column structure is ensured; the support member and the clamping mechanism are detachably connected, so that the removable formwork clamp can be repeatedly used, and the cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings needed in the embodiments. The drawings in the following description are only corresponding drawings of some embodiments of the present application.

[0016] Figure 1 is a front structure schematic view of the removable formwork reinforcing structure provided by the preferred embodiment of the present application; Figure 2 is Figure 1 is a side structure schematic view of the removable formwork reinforcing structure in the embodiment; Figure 3 is Figure 1 is a top structure schematic view of the removable formwork reinforcing structure in the embodiment; Figure 4 is a structure schematic view of the clamping mechanism of the removable formwork clamp provided by the preferred embodiment of the present application; Figure 5 is Figure 4Side structural diagram of the middle clamping mechanism; Figure 6 yes Figure 5 A schematic structural diagram of the reinforcement member of the middle clamping mechanism; Figure 7 yes Figure 4 Schematic diagram of the structure of the support parts of the free mold removal fixture; Figure 8 yes Figure 7 Schematic diagram of the end structure of the middle support member; Figure 9 yes Figure 3 Schematic diagram of the structure of the anti-falling parts of the free mold removal fixture; Figure 10 yes Figure 3 Schematic diagram of the structure of the adjustment mechanism of the mold removal fixture; Figure 11 yes Figure 3 Exploded diagram of the middle adjustment mechanism; Figure 12 yes Figure 1 Structural diagram of the wall panel with the formwork-free reinforcement structure; Figure 13 This is a flow chart of the cast-in-situ wall structural column construction method provided by the present invention; Figure 14 This is a schematic diagram of the segmented structure of the wall structural column provided by the present invention; Figure 15 The present invention provides a flow chart of a segmented construction method for a wall structural column. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] The terms "first" and "second" in the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be used as a limitation on the order of precedence.

[0019] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0020] like Figure 1 、 Figure 2 and Figure 3 As shown, the present invention provides a formwork-free reinforcement structure for cast-in-place wall structural columns, including a wall 100, a steel frame 200, a wall panel 300 and a formwork-free clamp 400. The wall 100 is provided on both sides of the transverse X direction of the steel frame 200, and the wall panel 300 is provided on both sides of the longitudinal Y direction of the steel frame 200; the formwork-free clamp 400 is divided into two groups, which are respectively located on both sides of the transverse X direction of the steel frame 200.

[0021] It can be understood that in this embodiment, the horizontal direction and the vertical direction are two mutually perpendicular directions in the horizontal direction, wherein the thickness direction of the wall 100 is the vertical direction, the length direction of the wall 100 is the horizontal direction, and the height direction of the wall 100 is the vertical direction.

[0022] The mold-free clamp 400 includes a clamping mechanism 1, a support member 2, and an adjustment mechanism 3. Two clamping mechanisms 1 are provided, one on each longitudinal side of the wall 100, abutting against the wall 100 and the wall panel 300 to reinforce the wall panel 300. The support member 2 is detachably connected to the two clamping mechanisms 1 and is used to support the top surface of the wall 100. The adjustment mechanism 3 is detachably connected between the tops of the two clamping mechanisms 1. Located above the support member 2, the adjustment mechanism 3 is used to adjust the distance between the tops of the two clamping mechanisms 1, thereby changing the distance between the bottoms of the clamping mechanisms 1 and adjusting the degree of clamping of the wall panel 300 by the two clamping mechanisms 1.

[0023] The support member 2 cooperates with the top surface of the wall 100 to support and position the entire formwork-free fixture 400, and the two clamping mechanisms 1 are respectively located on both sides of the thickness direction of the wall 100. The clamping mechanism 1 applies a force to the wall panel 300 from the outside of the wall panel 300 to ensure that the wall panel 300 will not shift when pouring concrete; there is no need to use tension bolts, which reduces the impact of the penetration on the overall quality of the structural column and ensures the structural strength of the structural column; the support member 2 and the clamping mechanism 1 are detachably connected, so that the formwork-free fixture 400 can be disassembled and reused, saving costs.

[0024] like Figure 1 、 Figure 2 、 Figure 4,and Figure 5 As shown, the clamping mechanism 1 includes a clamping column 11 and multiple reinforcement members 12. The clamping column 11 is detachably connected to the support member 2, facilitating on-site assembly and disassembly. The clamping column 11 is cylindrical and arranged along the vertical direction Z. The multiple reinforcement members 12 are arranged along the vertical direction Z and are all located below the support member 2. When the support member 2 is supported on the top surface of the wall 100, the reinforcement members 12 are located where the wall 100 and the wall panel 300 are located, allowing them to abut against the wall 100 and the wall panel 300.

[0025] Each reinforcement member 12 is elongated, allowing for simultaneous contact with the wall 100 and the wall panel 300. The center portion of each reinforcement member 12 is pivoted about the longitudinal axis Y and is adjustably connected to the clamping column 11 along the longitudinal axis. Rotating the reinforcement member 12 changes the contact position between the reinforcement member 12 and the wall panel 300. By adjusting the angle of force applied, the impact force during concrete pouring is evenly distributed, reliably reinforcing the wall panel 300.

[0026] The reinforcement members 12 are adjustably connected to the clamping columns 11 along the longitudinal direction Y. The spacing between the reinforcement members 12 and the clamping columns 11 can be adjusted to ensure that each reinforcement member 12 is reliably in contact with the wall 100 and the wall panel 300 .

[0027] like Figure 5 and Figure 6 As shown, in this embodiment, a reinforcing screw 121 is provided on the reinforcing member 12. The reinforcing screw 121 is arranged along the longitudinal direction Y and is perpendicular to the reinforcing member 12. A reinforcing nut 122 is threadedly connected to the reinforcing screw 121. The clamping column 11 is provided with an adjustment hole 112. The reinforcing screw 121 is movably inserted into the adjustment hole 112. The reinforcing nut 122 is located between the reinforcing member 12 and the clamping column 11, and the reinforcing nut 122 abuts the clamping column 11.

[0028] During use, the reinforcing nut 122 is installed on the reinforcing screw 121, the end of the reinforcing screw 121 is passed through the adjustment hole 112, and the reinforcing nut 122 is abutted against the clamping column 11. By utilizing the cooperation between the reinforcing screw 121 and the adjustment hole 112, the reinforcing screw 121 can be used as a rotating shaft for the relative rotation of the reinforcing member 12 and the clamping column 11, so that the angle of the reinforcing member 12 can be adjusted by rotation. By rotating the reinforcing nut 122, the position of the reinforcing nut 122 on the reinforcing screw 121 is changed. When the reinforcing nut 122 abuts against the reinforcing screw 121, the distance between the reinforcing member 12 and the clamping column 11 can be changed. By adjusting the reinforcing member 12 toward the wall 100, the reinforcing member 12 can be reliably abutted against the wall 100 and the wall panel 300. By utilizing the cooperation between the reinforcing nut 122 and the reinforcing screw 121 , the reinforcing member 12 can be adjusted longitudinally relative to the clamping column 11 , and the reinforcing member 12 can be rotated, which has low manufacturing cost and is convenient for processing and preparation.

[0029] In this embodiment, the reinforcement member 12 is a steel square tube, such as a hollow galvanized square steel, which has a high structural strength and low material cost, thereby reducing the cost of the entire mold-free fixture 400. The reinforcement member 12 is welded to the reinforcing screw 121 for ease of manufacture.

[0030] The clamping column 11 is also a square tube made of steel, such as hollow galvanized square steel. Its material is the same as the processed part. The square tube made of steel can be cut according to the length of the clamping column 11 and the reinforcement 12 to form the clamping column 11 and the reinforcement 12, thereby further reducing costs.

[0031] like Figure 7 As shown, the support member 2 is provided with two connection holes 21, and the two clamping columns 11 are respectively passed through the two connection holes 21. Figure 2 、 Figure 3 As shown, an anti-falling member 4 is provided between the clamping column 11 and the support member 2 , and the anti-falling member 4 is used to locate the vertical position of the clamping column 11 to prevent the clamping column 11 from sliding out of the connecting hole 21 .

[0032] Specifically, if Figure 5 As shown, the clamping column 11 is provided with a positioning hole 114, the axial direction of the positioning hole 114 being perpendicular to the vertical direction. The anti-falling member 4 is rod-shaped and inserted into the positioning hole 114. The anti-falling member 4 abuts against the top of the support member 2, so that the anti-falling member 4 supports the clamping column 11 and prevents it from moving downward. The positioning holes 114 can be arranged in a plurality along the vertical direction to adjust the relative position between the clamping column 11 and the support member 2, change the length of overlap between the clamping column 11 and the wall 100, and adjust the clamping column 11 according to the preset height of the wall 100, thereby improving the versatility of the mold-free clamp 400.

[0033] Further, if Figure 9 As shown, the anti-falling member 4 is an L-shaped member formed by bending a steel bar, which has good structural strength and is convenient for construction workers to remove and insert the anti-falling member 4. The axial direction of the positioning hole 114 is horizontal, so that the positioning member can be removed and inserted in the horizontal direction. The positioning member body is arranged in the horizontal direction to avoid being too protruding in the vertical direction and affecting the safety of users.

[0034] like Figure 8 As shown, the support member 2 is a U-shaped channel steel arranged longitudinally, which provides greater structural strength, is easy to purchase, and is relatively low in cost. The U-shaped opening of the support member 2 is positioned upward to facilitate contact between its bottom plate and the top surface of the wall 100. The two ends of the anti-fall member 4 can be supported on the two arms of the U-shaped structure of the support member 2. The connection hole 21 is provided in the bottom plate of the U-shaped structure of the support member 2.

[0035] The connecting hole 21 is loosely matched with the clamping column 11 so that there is a certain amount of movement between the clamping column 11 and the connecting column. When the adjustment mechanism 3 adjusts the top spacing of the clamping column 11, the abutment force between the lower reinforcement 12 and the wall 100 and the wall panel 300 can be changed.

[0036] In this embodiment, Figure 2 、 Figure 3 As shown, the adjustment mechanism 3 is detachably connected between the tops of the two clamping columns 11 to adjust the top spacing of the two clamping columns 11, so that after the lower reinforcement 12 is adjusted longitudinally, the two clamping columns 11 can still remain as parallel as possible to avoid the clamping columns 11 being tilted when multiple reinforcements 12 are adjusted longitudinally and the clamping force cannot be effectively guaranteed.

[0037] like Figure 10 and Figure 11 As shown, the adjustment mechanism 3 includes a positioning member 31, an adjustment screw 32, and an adjustment nut 33. Both the positioning member 31 and the adjustment screw 32 are arranged along the longitudinal direction Y. One end of the positioning member 31 is hooked on the top of one clamping column 11, and the other end is provided with a through hole. One end of the adjustment screw 32 abuts the other clamping column 11, and the other end is movably inserted into the through hole. The adjustment nut 33 is threadedly connected to the adjustment screw 32 and abuts the other end of the positioning member 31.

[0038] The positioning member 31 is hooked and connected to one clamping column 11, and the adjustment screw 32 abuts the other clamping column 11, making it easy to assemble and disassemble the adjustment mechanism 3 and the two clamping columns 11, making it easy to use. When adjusting, the distance between the tops of the two clamping columns 11 can be adjusted by rotating the adjustment nut 33 and changing its position on the adjustment screw 32. Adjustment is simple and convenient.

[0039] Furthermore, the positioning member 31 is a steel square tube, such as a hollow galvanized square steel tube. A plate 311 bent into an L-shape is welded to one end. A gap is formed between the L-shaped plate 311 and the end surface of the positioning member 31. The edge of the square tube of the clamping post 11 can be positioned within this gap, thereby achieving a hook connection between the positioning member 31 and the clamping post 11. This simple structure facilitates fabrication. In this embodiment, a closing plate (not shown) is provided at the other end of the positioning member 31, and the via is provided in the closing plate.

[0040] An abutment plate 321 is provided at one end of the adjusting screw 32, and a movable plate 322 is provided at the other end. The abutment plate 321 is vertically fixedly connected to the adjusting screw 32 and abuts against the outer circumference of the clamping column 11 to ensure reliable abutment between the two. The movable plate 322 is square and slides within the square channel of the positioning member 31. The cooperation between the movable plate 322 and the inner cavity of the square channel prevents the adjusting screw 32 from rotating when the adjusting nut 33 is rotated, facilitating adjustment.

[0041] The formwork-free reinforcement structure also includes an internal support bar 500, which is arranged at the tooth joint of the wall. The internal support bar 500 is arranged longitudinally, and its two ends are respectively abutted against the two wall panels 300, so that the two wall panels 300 maintain a fixed gap, preventing the wall panels 300 from contacting the steel frame 200, and at the same time making the outer surface of the wall panel 300 flush with the wall.

[0042] The present invention also provides a method for constructing cast-in-place wall structural columns, which uses the aforementioned wall structural column formwork-free reinforcement structure and formwork-free fixture for construction. Figure 13 As shown, the specific steps include the following steps.

[0043] Step S100: Construction preparation. This step mainly includes the following contents.

[0044] 1. Be familiar with the drawings and specifications, clarify the construction content, prepare the structural column construction plan, and complete the approval.

[0045] 2. Determine the location of the structural columns to be filled in the wall according to the design drawings and specifications.

[0046] 3. Prepare the personnel required for construction, use calibrated testing and measuring tools, check the factory certificates and performance test reports of raw materials, and re-inspect according to relevant national specifications and standards.

[0047] 4. Brief the operating personnel on safety and construction techniques.

[0048] 5. Make steel bars for secondary structures such as walls and structural columns, such as embedded bars, main bars, and stirrups.

[0049] 6. Prepare the mold-free fixture 400.

[0050] 7. Make 300 wall panels.

[0051] In this embodiment, the wall panels 300 are fiber-cement flat panels to enhance structural strength. The thickness of the wall panels 300 ranges from 8mm to 10mm. Using fiber-cement flat panels replaces the traditional wooden formwork used to reinforce structural columns (which requires demolding). After the structural columns are cast, they become integrated with the fiber-cement flat panels, creating a formwork-free system. The fiber-cement flat panels are impermeable, have excellent flexural and impact strength, and have a rough cement back surface that effectively bonds with concrete.

[0052] Prepare the board. First, cut the board into equal parts. Then, use a marker to draw lines on the board according to the standard size of the cutting drawing. Use a handheld cutting machine to cut and shape according to the line marks (the handheld cutting machine must have a protective cover to ensure construction safety). The formed wall board will be as follows: Figure 12 shown.

[0053] Step S200: measuring and setting out.

[0054] According to the size requirements of the architectural drawings, based on the benchmark control points set up at the construction site and the layout openings reserved for structural construction, use a laser plumb line to check the benchmark points and axis positions reserved for each floor. Then use a total station to measure the detailed control lines within the floor. Finally, based on the control lines and the architectural drawings, lay out the axis of the wall, the edge lines of the masonry, the structural columns, and the position lines of the door and window openings.

[0055] Step S300: installing the steel reinforcement frame 200 of the structural column.

[0056] The steel frame 200 of the structural column includes main bars, stirrups and embedded bars. The main bars are arranged longitudinally, and the embedded bars are tied and overlapped with the main bars. The overlap length, stirrup size, stirrup spacing, etc. can be specifically set according to the structural requirements of the structural column.

[0057] In step S400, the wall structural column structure is divided into multiple sections in the vertical direction according to a preset height, and construction is carried out section by section from bottom to top.

[0058] According to the wall construction specifications (non-weighing masonry is built in batches, and the height of each masonry should not exceed 1.5m) and the wall masonry flow construction plan, taking into account the plate loss of the wall panel 300 and the building height clearance, the wall is designed to have a masonry height of ≤1m each time, that is, the aforementioned preset height ≤1m. Figure 14 As shown, the entire wall is constructed in sections, divided from bottom to top into a bottom section 901, several middle sections 902, and a top section 903. The wall's structural columns are constructed section by section from bottom to top, facilitating the use of formwork-free fixtures to reinforce the wall panels, ensuring the quality of each section's structural columns and improving construction efficiency.

[0059] The bottom section and several middle sections are constructed according to the segmented construction method.

[0060] like Figure 15 As shown, the segmented construction method of the wall structural column includes the following steps.

[0061] Step S410 , building walls 100 of a preset height on both sides of the steel frame 200 .

[0062] Use blocks for masonry. In this embodiment, autoclaved aerated concrete blocks are used for masonry. Before construction, set up a number of poles. During construction, draw a line at the top to determine the vertical and horizontal mortar joint widths. The mortar joints should be straight and level, with full mortar and staggered T-shaped joints. Tooth joints should be provided in the wall 100 at the structural column location. These should be reserved according to the standard dimensions shown in the drawings to ensure accurate installation of the wall panels 300.

[0063] Step S420: Install the wall panels 300 on both longitudinal sides of the steel frame 200. The details are as follows.

[0064] First, an inner support bar 500 is placed in the tooth shape of the wall 100. The inner support bar 500 is arranged longitudinally, and its two ends are respectively used to abut against the wall panels 300 on both sides of the longitudinal direction of the wall 100, so that the two wall panels 300 maintain a fixed gap, avoiding the wall panels 300 from contacting the steel frame 200, and at the same time making the outer surface of the wall panel 300 flush with the wall.

[0065] Next, the cut wall panels 300 are embedded in the structural columns of the wall 100, with the inner surface of the wall panels 300 abutting against the inner support bars 500 and the outer surface of the wall panels 300 flush with the surface of the wall 100. Before installing the mold-free fixture 400, it is necessary to hold the panels by hand to prevent them from tipping over and being damaged.

[0066] Step S430: Install a mold-free fixture to reinforce the wall panel 300 in the longitudinal direction. The details are as follows.

[0067] In step S431 , a plurality of reinforcing members 12 are assembled with the clamping column 11 . The reinforcing screws 121 of the reinforcing members 12 are inserted into the adjusting holes 112 on the clamping column 11 .

[0068] Step S432: Place the support member 2 on the top surface of the wall 100 and connect the clamping column 11 to the support member 2. Specifically, insert the clamping column 11 into the connecting hole 21 of the support member 2, and insert the anti-falling member 4.

[0069] Step S434: installing the adjustment mechanism 3.

[0070] In this embodiment, the adjustment mechanism 3 is hooked and connected to the clamping column 11 to facilitate the assembly and disassembly of the adjustment mechanism 3. More specifically, one end of the positioning member 31 of the adjustment mechanism 3 is hooked to one clamping column 11, and the adjustment screw 32 abuts against the other clamping column 11, thereby completing the installation of the adjustment mechanism 3, which is convenient and quick.

[0071] Step S435 , rotating the reinforcement member 12 longitudinally to adjust the angle of the reinforcement member 12 to evenly distribute the impact force during concrete pouring.

[0072] In step S436, the adjusting mechanism 3 is adjusted, and the reinforcing member 12 is longitudinally adjusted so that the reinforcing member 12 is in close contact with the wall 100 and the wall panel 300, thereby reinforcing the wall panel 300. Specifically, the adjusting nut 33 of the adjusting mechanism 3 and the reinforcing nut 122 of the reinforcing member 12 are rotated.

[0073] In this embodiment, two sets of formwork-free clamps are provided, one on each side of the steel frame 200. The vertical projection of each clamping column 11 is located on the wall 100 to prevent the upper support member 2 from obstructing the wall panel 300 and affecting the subsequent concrete pouring. The two sets of formwork-free clamps 400 can be assembled simultaneously or sequentially.

[0074] When the reinforcement 12 is in a horizontal state, the vertical projections of the reinforcements 12 of the two sets of mold-free clamps 400 overlap, so that the end coverage ranges of the reinforcements 12 of the two sets of mold-free clamps 400 overlap, thereby increasing the range of action on the wall panel 300 and enhancing the reinforcement force.

[0075] Step S440: pouring concrete on the steel frame 200.

[0076] Use commercial concrete with a coarse aggregate size of less than 20mm, and control the slump at 14-16cm. Before pouring, clean up the garbage and other debris in the structural column and the oil stains on the steel bars, and sprinkle water on the inside of the plate / formwork and 100 parts of the wall to moisten it (to prevent the concrete from losing moisture and make the structural column and wall more firmly bonded).

[0077] The concrete of the bottom section and the middle section is poured manually. The concrete is poured from the top of the structural column with a mason's bucket. A small handheld vibrator is used to vibrate every 1 / 2 section (≤50cm).

[0078] Step S450: removing the mold-free fixture.

[0079] Only when the test block strength reaches 1.2 MPa can the bottom and middle sections of the formwork-free fixture 400 be removed. The wall panels 300 do not need to be removed. The steps for removing the formwork-free fixture 400 are the opposite of the steps for installing the formwork-free fixture in step S430. After removal, the formwork-free fixture 400 must be cleaned of any remaining and adhering concrete to prepare for the next use.

[0080] Through the above steps, the bottom section and the middle section can be constructed in sequence. After all the middle sections are constructed, the top section can be constructed. The top section can be reinforced with the wall panel 300 by existing methods such as tension bolts and poured with concrete cement, which will not be repeated in this embodiment.

[0081] The present invention is particularly suitable for the construction of structural columns in the straight spans of infill wall masonry. It uses fiber cement flat panels as wall panels to replace the traditional wooden formwork for reinforcing structural columns (which requires demolding). After the structural columns are cast, they become integrated with the fiber cement flat panels, forming a formwork-free system. To facilitate the installation of fiber cement flat panels for structural columns in infill wall masonry, a formwork-free clamp is provided. The clamp uses square tubes, i.e., hollow galvanized square steel, and the combined accessories form a reinforcement system. This avoids the traditional reinforcement method of structural columns that use through-hole screws (except for the top section), reducing the impact of the holes on the overall quality of the structural columns. At the same time, the formwork-free clamp is detachable and reusable, saving the material cost of accessories such as square timber and through-hole screws used in traditional formwork reinforcement. The present invention changes the traditional construction process in which carpentry teams perform formwork installation, reinforcement, and demolding. The entire construction process can be performed by a masonry team, greatly reducing the labor cost of construction.

[0082] In view of the above, while the application has been described in terms of preferred embodiments, the skilled person will be aware of modifications and alterations which can be made without departing from the scope and spirit of the application. Accordingly, the scope of the application is not intended to be limited to the preferred embodiments described above but is only limited by the scope of the appended claims.

Claims

1. A method for constructing cast-in-situ wall structural columns, characterized in that: The following steps are involved: Installation of steel frame for structural columns; and, The wall structural column is divided into multiple sections according to a preset height in the vertical direction, and the construction is carried out section by section from bottom to top. The wall structural column is divided into a bottom section, several middle sections and a top section from bottom to top. The bottom section and the middle section are constructed according to the following steps: Building walls of a preset height on both sides of the steel frame; installing wall panels on both longitudinal sides of the steel frame; Installing a formwork-free clamp to reinforce the wall panel in the longitudinal direction; pouring concrete at the steel frame; and, Removing the mold-free fixture; Among them, the mold-free clamp includes a clamping mechanism, a support member and an adjustment mechanism. There are two clamping mechanisms, which are respectively used to be set on the longitudinal sides of the wall and abut against the wall and the wall panel; the support member is detachably connected to the upper part of the two clamping mechanisms and is used to support the top surface of the wall; the adjustment mechanism is detachably connected between the tops of the two clamping mechanisms to adjust the top spacing of the two clamping mechanisms.

2. The cast-in-situ wall structural column construction method according to claim 1, characterized in that: The clamping mechanism includes a clamping column and a plurality of reinforcement members; the clamping column is detachably connected to the support member; the clamping column is vertically arranged in a column shape; the plurality of reinforcement members are arranged vertically and are all located below the support member; the reinforcement members are used to abut against the wall and the wall panel; each reinforcement member is long and strip-shaped; the middle portion of each reinforcement member is arranged to rotate about the longitudinal direction and is adjustably connected to the clamping column along the longitudinal direction; The steps of installing the mold-free fixture include: Assembling a plurality of the reinforcement members with the clamping columns; Placing the support member on the top surface of the wall and connecting the clamping column to the support member; installing the adjustment mechanism; Rotating the reinforcement member longitudinally to adjust the angle of the reinforcement member; The adjusting mechanism is adjusted, and the reinforcing member is adjusted longitudinally at the same time, so that the reinforcing member is in close contact with the wall and the wall panel, thereby reinforcing the wall panel.

3. The cast-in-situ wall structural column construction method according to claim 2, characterized in that: There are two groups of the mold-free clamps, which are respectively located on the two horizontal sides of the steel frame; and the longitudinal projection of each clamping column is located on the wall.

4. The cast-in-situ wall structural column construction method according to claim 2, characterized in that: In the step of installing the adjusting mechanism, the adjusting mechanism is hooked and connected to the clamping column.

5. The method for constructing cast-in-situ wall structural columns according to claim 1, characterized in that: The step of installing the wall panels on both longitudinal sides of the steel frame includes: Placing inner support bars in the tooth groove of the wall, wherein the inner support bars are arranged in the longitudinal direction; The cut wall panels are embedded into the structural columns of the wall, with the inner surface of the wall panels abutting against the inner support bars, and the outer surface of the wall panels being flush with the wall.

6. The method for constructing cast-in-situ wall structural columns according to claim 1, characterized in that: The preset height is ≤1m.

7. A mold-free clamp used for reinforcing wall panels in a wall column mold-free reinforcement structure; characterized in that: It includes a clamping mechanism, a support member and an adjustment mechanism. There are two clamping mechanisms, which are respectively used to be set on the longitudinal sides of the wall and abut against the wall and the wall panel; the support member is detachably connected to the two clamping mechanisms and is used to support the top surface of the wall; the adjustment mechanism is detachably connected between the tops of the two clamping mechanisms, located above the support member, and is used to adjust the top spacing of the two clamping mechanisms.

8. The mold-free fixture according to claim 7, characterized in that: The clamping mechanism includes a clamping column and multiple reinforcements; the clamping column is detachably connected to the support member; the clamping column is columnar and arranged vertically; multiple reinforcements are arranged vertically and are all located below the support member; the reinforcements are used to abut against walls and wall panels; each reinforcement is long and strip-shaped; the middle part of each reinforcement is arranged to rotate longitudinally and is adjustably connected to the clamping column along the longitudinal direction.

9. The mold-free fixture according to claim 8, characterized in that: The adjustment mechanism includes a positioning member, an adjusting screw and an adjusting nut; the positioning member and the adjusting screw are both arranged longitudinally, one end of the positioning member is hooked on the top of one of the clamping columns, and the other end is provided with a through hole, one end of the adjusting screw is abutted against the other clamping column, and the other end is movably passed through the through hole; the adjusting nut is threadedly connected to the adjusting screw and abuts against the other end of the positioning member.

10. A mold-free reinforcement structure, characterized in that: The invention comprises a wall, a steel frame, a wall panel, and the formwork-free clamp according to any one of claims 7 to 9, wherein the wall is provided on both lateral sides of the steel frame, and the wall panel is provided on both longitudinal sides of the steel frame; the formwork-free clamp is provided in two groups, one of which is located on both lateral sides of the steel frame; The support member of the mold-free clamp is supported on the top surface of the wall, and the clamping mechanism of the mold-free clamp is in contact with the wall and the wallboard.

Images