Active control method and structure for installation crack of light internal partition wall batten of building

Abstract

The invention provides an active control method for installation cracks of a light inner partition wall batten of a building. An installation control line after the installation sideline of the ALC batten deviates is lofted according to the axis of a wall and the axis of a column; u-shaped steel plate clamps are installed on the structural walls and columns according to the ALC batten installation control lines and fixed to the walls / columns through anchor bolts; the tops of the battens are fixed through L-shaped pipe clamps and fixed to a floor / beam through anchor bolts. An inner partition wall ALC batten is installed through a vertical installation method, and reinforcing treatment is conducted on corner L-shaped joints and T-shaped wall joints through steel bar pins; after the wallboards are installed, bottom seams of the wallboards are filled with fine aggregate concrete, caulking mortar is used for pointing vertical abutted seams between the adjacent ALC battens, and mortar filling and trowelling are conducted on upper opening seams; and alkali-resistant glass fiber gridding cloth is used for bonding and anti-cracking treatment. According to the method and the structure provided by the invention, the problems that the position of the partition board is easy to loosen in the later use process, the board sinks, reflection cracks are generated on the surface and the like are effectively prevented.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, and in particular to a method and structure for actively controlling cracks in the installation of lightweight inner partition wall strips. Background Art

[0002] In recent years, with the rapid development of social and economic levels, the construction industry is changing with each passing day, and some new materials and new technologies have been applied. Autoclaved aerated concrete strips (ALC strips for short) are used instead of traditional autoclaved aerated concrete blocks in the internal partitions of civil buildings and general industrial buildings. They have the advantages of small structural weight, high installation efficiency, no need for plastering on the surface, energy-saving and environmentally friendly materials, etc., and have broad application prospects.

[0003] However, there are a large number of joints after the installation of the strips, including the joints between the top and bottom and the floor slabs / beams, the floor, the joints between the sides and the shear walls / columns, and the joints between the ALC strips. In later use, it is easy for the partition boards to loosen, the panels to sink, and reflective cracks to appear on the surface, affecting the use effect. Summary of the invention

[0004] Based on this, the present invention provides a method and structure for actively controlling cracks in the installation of lightweight interior partition wall strips in buildings, so as to effectively prevent problems such as loosening of the partition wall panels, sinking of the panels, and reflective cracks on the surface during later use.

[0005] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a method for actively controlling cracks during installation of lightweight interior partition wall strips of a building, the construction steps comprising: S100. Measurement and setting out: according to the axis of the wall and column, set out the installation control line after the installation edge line of the ALC strip is offset; S200. Install U-shaped steel plate clamps and L-shaped pipe clamps: Install U-shaped steel plate clamps on the structural walls and columns according to the ALC strip installation control line, and fix them to the wall / column with anchor bolts; fix the top of the strip with L-shaped pipe clamps and fix them to the floor slab / beam with anchor bolts; S300. Install ALC strips: Use the vertical installation method to install the ALC strips for the inner partition wall, and use steel bar pins to reinforce the corner L-shaped nodes and T-shaped wall nodes; S400. Inspection and correction: After each ALC strip is installed, check its verticality and flatness, and make position and angle corrections; S500. Filling the bottom seam: After the wall panels are installed, use fine stone concrete to fill the bottom seam of the wall panels; S600. Treat joints: Use caulking mortar to fill the vertical joints between adjacent ALC strips, and smooth the upper gaps; and use alkali-resistant glass fiber mesh cloth for bonding and crack resistance.

[0006] Furthermore, the ALC strips are respectively provided with through holes near the bottom of the partition wall, and full-length steel bars are passed through the reserved holes to avoid relative displacement of adjacent partition boards; a force-storage rubber belt is installed on the bottom surface of the floor slab / beam and fixed with nails; the ALC strips are installed on the floor one by one, and the top is pressed tightly against the bottom surface of the force-storage rubber belt to form a top pre-storage structure.

[0007] Furthermore, when installing the ALC slats, adhesive is applied fully at the joints of the slats, and after installation, the base is filled with fine stone concrete, and the vertical joints are grouted with aerated special caulking mortar and surface anti-cracking treatment is performed with glass fiber mesh cloth; after the ALC slats are positioned, the bottom board seams are first embedded with hardwood wedges for preliminary fixation, and then the installation position and the flatness and verticality of the board surface are checked, and the position and angle of the slats are corrected; after the bottom surface of the slats is adjusted to be horizontal, a flat steel top support is used to push it upward and tighten it on the power storage rubber belt, and the top of the board is fixed with a pipe clamp; the flat steel top support is height-adjustable, and includes a steel support tube and a steel support stud, the steel support stud is vertically installed above the steel support tube and is provided with a hexagonal bolt, the lower end of the steel support screw is inserted into the cavity of the steel support tube, and the hexagonal bolt is clamped on the upper edge of the steel support tube so that the height can be adjusted by screwing the hexagonal bolt.

[0008] Furthermore, before the ALC slats are erected and installed, an L-shaped pipe clamp is first driven into the top of the board, and the insertion point must not be less than 80 mm from the end of the board. One pipe clamp is used for each board to ensure that the slats are firmly positioned in the vertical and horizontal directions; the connecting steel plates of the L-shaped pipe clamps are placed along the direction of the inner partition wall and are concealed. Metal bolts are used to be driven inverted into the bottom surface of the floor slab / beam, and are concealed in the top joint of the next slat in turn.

[0009] Furthermore, the force-storing rubber belt is an elastic rubber belt. Before the strips are installed, cement nails are used to nail them into the floor slab / beam at the center position. The rubber belt and adhesive are squeezed by the top of the ALC strips to generate stress between the wall panel and the main structure, so that force is stored at the top of the wall panel to prevent the wall panel from sinking and causing cracks.

[0010] Furthermore, the U-shaped steel plate card is installed on the structural shear wall or column. According to the plane installation position of the ALC strip, a line is drawn on the shear wall or column. A steel plate card is set in the middle and lower parts in the height direction of the corresponding strip. The U-shaped steel plate card is fixed to the structural wall or column using metal bolts.

[0011] Furthermore, reinforcing steel pins are inserted into the corner L-shaped partition wall nodes and T-shaped wall nodes for reinforcement; the steel pins are inserted deeply into the connecting wall panels at the upper, middle and lower positions along the wall height direction.

[0012] Furthermore, when the ALC strips are installed, hardwood wedges are first embedded in the lower board seams for preliminary fixation. The ALC strips use polymer anti-cracking mortar to fill the board seams and are supported by hardwood wedges until they are solidified, and special polymer anti-cracking mortar is used to seal the wedge openings.

[0013] After the ALC strips are installed, the bottom of the board is filled with fine stone concrete. During the filling, the two sides of the wall are squeezed at the same time to make the fine stone concrete bulge in the inner hole of the wall board.

[0014] Furthermore, plastering grooves are reserved at the vertical joints of the ALC strips, and the joints are treated with alkali-resistant glass fiber mesh cloth for bonding and anti-cracking. When hanging the mesh, the glass fiber mesh cloth is pressed into the grooved joints with mortar, and the mesh cloth is glued with caulking mortar after initial setting for anti-cracking treatment again; wide mesh cloth is glued to the joints without grooves for anti-cracking treatment.

[0015] In the second aspect, the present invention provides an active crack control structure for installing lightweight interior partition wall strips in a building, comprising: a building structure system, including a plurality of installation units consisting of a floor, a shear wall / column and a floor slab / beam; an interior partition wall system, including ALC strips, a force storage rubber belt and a square steel frame; in one of the installation units, the side of the ALC strips is connected to the shear wall or column to form an interior partition wall; a fixed component system, including U-shaped steel plate clamps, L-shaped pipe clamps, metal bolts, steel bar pins and full-length steel bars; in one of the installation units, the sides of the starting block and the ending block of the ALC strips are fixed to the shear wall by U-shaped steel plate clamps, and the top is fixed to the bottom of the floor slab or the bottom of the beam by L-shaped pipe clamps, and the U-shaped steel plate clamps and the pipe clamps are anchored to the concrete structure by metal bolts; steel bar pins are inserted into the corner L-shaped partition wall nodes and T-shaped wall nodes for reinforcement; and an anti-cracking material system, including an adhesive, fine stone concrete, aerated special caulking mortar and glass fiber mesh cloth.

[0016] The technical advantages of the provided method and structure for actively controlling cracks in the installation of lightweight internal partition wall strips are at least reflected in: 1. A series of active crack control technologies have been adopted, including top rubber belt power storage, bottom support technology, concealed L-shaped pipe clamps, steel bar pins at special nodes, and joint anti-crack treatment, which can significantly reduce the risk of cracking on the surface of the inner partition wall and reduce the surface cracking phenomenon; 2. During the installation of ALC strips, a variety of active crack control methods and structures are used, which greatly improves the anti-cracking performance of the strip installation. It is beautiful and practical, and the use effect is significantly improved. It reduces the labor intensity of workers, improves production efficiency, and greatly reduces costs. The construction is safe and reliable, and the project quality is easy to guarantee, which has a strong promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A flowchart of the active crack control method for installing lightweight interior partition wall panels in a building is provided.

[0019] Figure 2 A schematic elevation diagram of an embodiment of a crack active control structure for installing a lightweight interior partition wall strip board of a building; Figure 3 Installation diagram of the provided U-shaped steel plate card; Figure 4 Install the elevation and plan construction drawings for the provided L-shaped pipe clamps; Figure 5 Structural drawing of using steel bar pins to strengthen the provided corner L-shaped nodes and T-shaped wall nodes; Figure 6 A schematic diagram of the hardwood wedge support pads provided for the bottom seams of the ALC slats; Figure 7 Schematic diagram of the anti-cracking treatment of the joints of the ALC strips provided; Figure 8 A schematic diagram of the adjustable height flat steel top support provided; Fig. 9 Schematic diagram of ALC strip installation and frame setting for the provided door and window openings.

[0020] Description of the accompanying drawings: 1-Building structure system; 11-Floor; 12-Shear wall / column; 13-Floor slab / beam; 2-internal partition system; 21-ALC strips; 22-energy storage rubber belt; 23-square steel frame; 31-U-shaped steel plate clamp; 32-L-shaped pipe clamp; 33-metal bolt; 34-steel pin; 35-through-length steel bar; 41-adhesive; 42-filled fine stone concrete; 43-aerated special caulking mortar; 44-glass fiber mesh cloth; 51-Hardwood wedge; 52-Flat steel top support.

[0021] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] like Figures 1 to 9 As shown, in order to provide a better method and structure for actively controlling cracks in the installation of lightweight interior partition wall strips, see the multiple substantial technical effects in the specific implementation part. In order to achieve the above purpose, the present invention adopts the following technical scheme: an active control structure for the installation of lightweight interior partition wall strips, including a building structure system 1, an interior partition wall system 2, a fixed component system 3, an anti-cracking material system 4 and a construction machine system 5. The building structure system includes a floor 11, a shear wall / column 12, and a floor slab / beam 13; the interior partition wall system 2 includes an ALC strip 21, a power storage rubber belt 22, and a square steel frame 23; in an installation unit, the side of the ALC strip is connected to the shear wall or column 12 to form an interior partition wall.

[0024] It should be noted that the multiple solutions provided include the basic solution itself, are independent of each other, and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects. This figure is a schematic diagram of the main components of the structure and method, and does not represent the external dimensions, connection method, assembly form, positional relationship, etc. of the present invention. Some rods, etc. are omitted in the figure.

[0025] During the civil construction phase, reinforced concrete floors, shear walls, columns, slabs and beams are cast on site in sequence; after the building structure system is cast, the brackets and formwork are removed, and the circulating materials and remaining materials on the floor 11 are cleaned up; first, the force-storing rubber belt 22 is installed on the bottom surface of the floor slab / beam 13, and nails are driven in; the ALC strips 21 are installed on the floor piece by piece, and the top is pressed tightly against the bottom surface of the force-storing rubber belt 22 to form a top pre-storage structure; when the building height is greater than 5.4m or there are door and window openings, the square steel frame 23 is used to divide the space into installation units of appropriate size to ensure the rigidity and applicability of the strip partition wall.

[0026] The fixing component system includes U-shaped steel plate clamps 31, L-shaped pipe clamps 32, metal bolts 33, steel bar pins 34, and full-length steel bars 35. In an installation unit, the sides of the starting block and the end block of the ALC strip 21 are fixed to the shear wall using U-shaped steel plate clamps 31, and the top is fixed to the bottom of the floor slab or the bottom of the beam using L-shaped pipe clamps 32. The U-shaped steel plate clamps and pipe clamps are anchored to the concrete structure using metal bolts 33. Steel bar pins 34 are inserted into the corner L-shaped partition wall nodes and T-shaped wall nodes for reinforcement. When the ALC strip is produced, Φ8mm through holes are reserved at 1m and 2m from the bottom of the partition wall. During installation, full-length steel bars 35 are inserted into the reserved holes to avoid relative displacement of adjacent partition wall boards. The anti-cracking material system includes adhesive 41, fine stone concrete 42, aerated special caulking mortar 43, and glass fiber mesh cloth 44.

[0027] The ALC strips are installed vertically. During installation, adhesive 41 is applied to the joints of the strips. After installation, the footing is filled with fine stone concrete 42. Aerated special caulking mortar 43 is used to point the vertical joints, and glass fiber mesh cloth 44 is used to prevent cracking on the surface. The construction tool system includes a crowbar, a rubber hammer, a hardwood wedge 51, a laser projection instrument, a ruler, a grinding wheel cutter and a flat steel top support 52.

[0028] After the ALC strips are in place, the bottom seams are first embedded with hardwood wedges 51 for preliminary fixation, and then a laser line projector and a ruler are used to check the installation position and the flatness and verticality of the board surface. At the same time, a crowbar and a rubber hammer are used to coordinate the correction of the strips. After the bottom surface of the strip is adjusted to be horizontal, a flat steel top support 52 is used to push it upwards and tighten it onto the power storage rubber belt, and the top of the board is securely fixed with a pipe clamp.

[0029] When installing the ALC strip partition wall at the door / window opening, a square steel frame 23 is used around the door / window opening for reinforcement, and the square steel frame is firmly connected to the main structure; the strips and the square steel frame are processed by a grinding wheel cutter, or when the installation space is insufficient for a whole board, the strips are cut to allow for small patching.

[0030] The force storage rubber belt 22 is an elastic rubber belt with a width × length of 50 mm × 600 mm and a thickness of 5 mm, and is off-white. Before installing the strips, use L = 25 mm galvanized cement nails to drive into the floor slab / beam 13 at the center position, and use the ALC strips 21 to squeeze the rubber belt and adhesive on the top of the board to generate stress between the wallboard and the main structure, so that the top of the wallboard stores force, preventing the wallboard from sinking and cracking, and significantly improving the construction quality.

[0031] In some embodiments, the U-shaped steel plate card 31 is installed on the structural shear wall or column. The steel plate card is made of Q235 steel, hot-dip galvanized, L=60mm, t=1.5mm; according to the plane installation position of the ALC strip 21, a line is drawn on the shear wall or column, and a steel plate card is set in the middle and lower parts in the height direction of the corresponding strip. The starting steel plate card should be 300mm high from the floor slab, and the spacing should not be greater than 1500mm; the U-shaped steel plate card is fixed to the structural wall or column using two M10 metal bolts 33.

[0032] In some embodiments, the L-shaped pipe clamp 32 is made of Q235 steel, hot-dip galvanized, the connecting steel plate is 60-70mm wide, not less than 1.5mm thick, and has two Φ10mm round holes; before the ALC strip 21 is erected and installed, the L-shaped pipe clamp 32 is first driven into the top of the plate, and the insertion point must be no less than 80mm from the end of the plate, and one pipe clamp is used for each plate to ensure that the strip is firmly positioned in the vertical and horizontal directions. The connecting steel plate of the L-shaped pipe clamp 32 is placed along the direction of the inner partition wall, and is concealed. Two M8 metal bolts 33 are used to be driven inverted into the bottom surface of the floor slab / beam 13, and are concealed in the top joint of the next strip in turn.

[0033] In some embodiments, the L-shaped partition wall nodes and T-shaped wall nodes are reinforced by inserting steel bar pins 34. The steel bar pins are made of Ф8 HPB300 steel bars with a length of 300-400 mm, one in the middle and one in the lower along the wall height, and must be inserted into the connecting wall panel by no less than 150 mm.

[0034] The ALC strip board 21 has a thickness of T=100-300mm and a width of B=595mm; a compressive strength of ≥5.0MPa; a bulk density of ≤11.0KN / m³; and a fire resistance of ≥1.0h100mm, 2.0h200mm. During factory production, Ф8mm through reinforcement holes are reserved at a distance of 1m and 2m from the bottom of the wall panel. During installation, through-length steel bars 35 are passed through the reserved holes of the strip board to avoid relative displacement of adjacent strip boards, and effectively reduce the labor for connecting adjacent strip boards during on-site construction.

[0035] In some embodiments, when the ALC slats 21 are installed, a hardwood wedge 51 is first embedded in the lower board seam for preliminary fixation. The ALC slats are promptly checked for flatness and verticality of the board surface using a ruler and a laser plumb meter. After the verification is completed, polymer anti-cracking mortar is used to fill the board seams. The supporting wooden wedges can be removed after 7 days, and the wedge mouths are sealed with special polymer anti-cracking mortar. After each ALC slat is installed, a laser line projector and a 2m ruler should be used to check the verticality and flatness of the slat installation. If it does not meet the requirements, a crowbar and a rubber hammer should be used to adjust the position. The crowbar should be used to slowly move the slats during adjustment. A rubber hammer can be used for fine-tuning until it is adjusted to meet the requirements.

[0036] After the ALC strip board 21 is installed, first remove the debris at the foot seam and sprinkle water to moisten it, and then use the filling fine stone concrete 42 to fill the bottom of the board. During the filling, two professional workers squeeze on both sides of the wall at the same time to make the fine stone concrete 42 bulge in the inner hole of the wall board.

[0037] A 10mm deep and 50mm wide plastering groove is reserved at the vertical joints of the ALC strips 21, and a 100mm alkali-resistant glass fiber mesh cloth 44 is used to bond the joints for crack resistance. When hanging the mesh, the joints with grooves are pressed into a 50mm wide glass fiber mesh cloth using a 3mm-5mm special mortar, and after initial setting, a 100mm wide mesh cloth is pasted with a special aerated joint mortar 43 for crack resistance again; the joints without grooves are pasted with a 100mm wide mesh cloth for crack resistance.

[0038] After the ALC strips 21 are positioned and adjusted to a uniform elevation, two adjustable height flat steel supports 52 are arranged at the bottom of the partition board to press the ALC partition board upward against the force-storing rubber belt 22 to form a vertical prestressed structure. At the same time, the bottom of the strips can be filled densely to prevent settlement. The height adjustment range of the flat steel top support is 50 to 100 mm. It is made of Q235 steel and has a hot-dip galvanized surface. The bottom of the structure is a steel support tube, and the upper steel support screw is equipped with an M36 large hexagonal head bolt. The steel support screw is inserted into the cavity of the steel support tube, and the M36 large hexagonal head bolt is stuck on the upper edge of the steel support tube. Use a special wrench to tighten the bolt to achieve height adjustment.

[0039] When installing the ALC strip partition wall at the door / window opening, a square steel frame is used to reinforce the door / window opening, and the square steel frame is firmly connected to the main structure using Ф6×150mm galvanized cement nails; a grinding wheel cutter is used to process the strips and square steel frame according to the size of the door / window opening. When the installation space is insufficient for a whole board, the strips also need to be cut so that small pieces can be added. When the ALC strip inner partition wall is used in areas with waterproofing requirements, a concrete step with a height of 200mm must be poured on the floor first, and the ALC strips are installed one by one on the step, using the same process as installation on the floor.

[0040] The provided method and structure for actively controlling cracks during installation of lightweight internal partition wall strips is suitable for the installation of internal partition wall panels in civil buildings and general industrial buildings. Through in-depth design and optimized construction technology, a series of active crack control technologies such as top rubber belt power storage, bottom support technology, concealed L-shaped pipe clamps, steel bar pins at special nodes, and crack resistance treatment of joints are adopted, which can significantly reduce the risk of cracking on the surface of internal partition walls. This technical invention reduces the labor intensity of workers, improves production efficiency, and greatly reduces costs. The construction is safe and reliable, and the engineering quality is easy to guarantee, which has a strong promotion value.

[0041] The following is a detailed description of the method of actively controlling cracks in the installation of lightweight internal partition wall strips. Figure 1 As shown, the construction steps are as follows: S100. Measurement and setting out, including: Use a measuring robot and a marking robot to mark out the installation control line of the ALC strip board 21 with an installation edge line offset by 50mm according to the axis of the wall and column, and draw a line on the floor 11, which is drawn to the shear wall and column at the corner of the wall. During installation, check the installation position of the partition board based on the distance between the installation control line and the edge of the ALC board.

[0042] S200. Install the U-shaped steel plate clamp 31 and the pipe clamp, specifically including: Install U-shaped steel plate clips 31 on the structural wall and column according to the ALC strip 21 installation control line. Set one U-shaped steel plate clip 31 at the upper and lower 1 / 3. The starting steel plate clip should be 300mm above the floor slab, with a spacing of no more than 1500mm. Use M10 anchor bolts to fix it to the wall / column. Use L-shaped pipe clips 32 to fix the top of the strip, and use M8 anchor bolts to drive it into the floor slab / beam 13. Before erecting and installing, first knock the round pipe end of the pipe clip directly into the plate at the top of the plate. The insertion point should not be less than 80mm from the plate end. When knocking it in, the accessories should be straightened to avoid damage to the corners of the plate caused by tilting the accessories.

[0043] S300. Install ALC strip 21, including: (1) The ALC strips 21 of the internal partition wall are installed vertically. Before installation, the vertical joints are fully coated with adhesive 41 using a slurry squeezing process.

[0044] (2) Hardwood wedges 51 are first inserted into the lower board joints for preliminary fixation. When installing the strip boards, check the flatness and verticality of the board surface in a timely manner, and use a crowbar and a rubber hammer to adjust the position. After passing the test, use polymer anti-cracking mortar to fill the board joints. The supporting wooden wedges can be removed after 7 days.

[0045] (3) Use Ф8 steel bar pins 34 to reinforce the corner L-shaped nodes and T-shaped wall nodes. One in the middle and one in the lower along the wall height. The length is 300 to 400 mm. The insertion depth into the connecting wall panel should not be less than 150 mm. The spacing should be 800 to 1000 mm.

[0046] S400. Check and correct, including: After each ALC strip 21 is installed, the verticality and flatness of the strip installation should be checked in time with a 2m ruler, pendant or laser plumb meter. If it does not meet the requirements, use a crowbar to adjust the position. Pry slowly during adjustment; fine-tuning can be done by tapping with a rubber hammer until it is adjusted to meet the requirements.

[0047] S500. Bottom seam filling, including: (1) After the wall panels are installed, the debris below is cleared and the floor surface 11 is moistened with water, special fine stone concrete is used to fill the bottom seam of the wall panels. Two professional workers squeeze the special filling mortar on both sides of the wall at the same time, so that the special filling mortar bulges in the inner hole of the wall panel. After the bottom hardwood wedge 51 is removed, the hole of the wood wedge is filled and smoothed with cement mortar for the second time.

[0048] (2) The wall panels are in a static period of 7 days after installation. It is strictly prohibited to chip, groove, or place machinery and materials on the wall panels to prevent cracking caused by vibration or disturbance.

[0049] S600.Seam processing, including: (1) The vertical joints between the strips are grouted with aerated special caulking mortar 43, and all the gaps on the upper edges of the strips are filled with mortar and smoothed.

[0050] (2) Use 100mm alkali-resistant glass fiber mesh cloth 44 for bonding and anti-cracking treatment. When hanging the mesh, use 3mm~5mm special mortar to press into 50mm wide glass fiber mesh cloth in the joints with grooves. After initial setting, use special mortar to stick 100mm wide mesh cloth for anti-cracking treatment again; stick a 100mm wide mesh cloth in the joints without grooves for anti-cracking treatment.

[0051] When the ALC strip board 21 partition wall is installed at the door / window opening, the secondary structure such as square steel frame 23 must be used to reinforce the surrounding of the opening. The square steel frame 23 can be processed with 100×100×2.5mm and firmly connected to the main structure with Ф6×150mm galvanized cement nails. The nail spacing is not greater than 1000mm. When the installation space is insufficient for a whole board, the strip board needs to be cut so that a small piece of board can be added.

[0052] An active crack control method and structure for installing lightweight internal partition wall strips of buildings. By optimizing and improving the design and construction process, a series of technologies such as top rubber belt force storage, bottom top support technology, concealed L-shaped pipe clamps 32, steel bar pins 34 at special nodes, and anti-crack treatment of joints are adopted to fix the installation position of the strips and reduce surface cracking.

[0053] This technology uses a variety of active crack control methods and structures during the installation of ALC strips 21, which greatly improves the anti-cracking performance of the strip installation. It is beautiful and practical, with significantly improved use effects, reasonable structural design, advanced technology, and good effects. The technical solution has passed innovative design and engineering application inspection, with advanced technology, safe and reliable construction, good use effects, and greatly reduces the machinery and personnel costs of internal partition wall construction, and has strong industrial practicality.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention can also be variously optimized and improved, and these optimizations and improvements all fall within the scope of the protection required.

Claims

1. A method for actively controlling cracks in the installation of lightweight internal partition wall strips in a building, characterized in that: The construction steps include: S100. Measurement and setting out: according to the axis of the wall and column, the installation control line of the ALC strip (21) after the installation edge line is offset is set out; S200. Install the U-shaped steel plate clamp (31) and the L-shaped pipe clamp (32): Install the U-shaped steel plate clamp (31) on the structural wall and column according to the control line installed on the ALC strip (21), and fix it to the wall / column through anchor bolts; fix the top of the strip with the L-shaped pipe clamp (32) and fix it to the floor slab / beam (13) through anchor bolts; S300. Installing the ALC strips (21): Use the vertical installation method to install the inner partition wall ALC strips (21), and use steel bar pins (34) to strengthen the corner L-shaped nodes and T-shaped wall nodes; S400. Inspection and correction: After each ALC strip (21) is installed, check the verticality and flatness, and perform position and angle correction; S500. Filling the bottom seam: After the wall panels are installed, use fine stone concrete to fill the bottom seam of the wall panels; S600. Treat the joints: Use caulking mortar to fill the vertical joints between adjacent ALC strips (21), and smooth the upper joints; and use alkali-resistant glass fiber mesh cloth (44) for bonding and crack resistance treatment.

2. The method for actively controlling cracks during installation of lightweight interior partition wall strips according to claim 1 is characterized in that: The ALC strips (21) are respectively provided with through holes near the bottom of the partition wall, and through-length steel bars (35) are passed through the reserved holes to prevent relative displacement of adjacent partition wall panels; a force storage rubber belt (22) is installed on the bottom surface of the floor slab / beam (13) and fixed with nails; the ALC strips (21) are installed piece by piece on the floor, and the top is pressed tightly against the bottom surface of the force storage rubber belt (22) to form a top pre-storage structure.

3. The method for actively controlling cracks during installation of lightweight interior partition wall strips according to claim 2 is characterized in that: When installing the ALC strips (21), the adhesive (41) is applied to the joints of the strips. After installation, the base is filled with fine stone concrete (42). The vertical joints are grouted with aerated special caulking mortar (43) and the surface is treated with glass fiber mesh cloth (44) to prevent cracking. After the ALC strips (21) are positioned, the bottom seams are first embedded with hardwood wedges (51) for preliminary fixation. Then, the installation position and the flatness and verticality of the board surface are checked, and the position and angle of the strips are corrected. After the bottom surface of the strips is adjusted to be horizontal, a flat steel top support (52) is used to push it upwards and tighten it on the power storage rubber belt, and the top of the board is fixed with a pipe clamp. The flat steel top support (52) is height-adjustable and comprises a steel support tube and a steel support stud. The steel support stud is vertically installed above the steel support tube and is provided with a hexagonal bolt. The lower end of the steel support screw is inserted into the cavity of the steel support tube. The hexagonal bolt is clamped on the upper edge of the steel support tube so that the height can be adjusted by screwing the hexagonal bolt.

4. The method for actively controlling cracks during installation of lightweight interior partition wall strips according to claim 3 is characterized in that: Before the ALC strips (21) are erected and installed, an L-shaped pipe clamp (32) is first driven into the top of the plate, with the insertion point not less than 80 mm from the end of the plate. One pipe clamp is used for each plate to ensure that the strips are firmly positioned in the vertical and horizontal directions. The connecting steel plate of the L-shaped pipe clamp (32) is placed along the direction of the inner partition wall and is concealed. The metal bolt (33) is driven inverted into the bottom surface of the floor slab / beam (13) and is concealed in the top joint of the next strip.

5. The method for actively controlling cracks during installation of lightweight interior partition wall strips according to claim 2 is characterized in that: The force storage rubber belt (22) is an elastic rubber belt. Before the strips are installed, they are nailed into the floor slab / beam (13) at the center position using cement nails. The rubber belt and adhesive are squeezed by the top of the ALC strips (21) to generate stress between the wall panel and the main structure, so that force is stored at the top of the wall panel to prevent the wall panel from sinking and causing cracks.

6. The method for actively controlling cracks during installation of lightweight interior partition wall strips according to claim 2 is characterized in that: The U-shaped steel plate clamp (31) is installed on the structural shear wall or column. A line is drawn on the shear wall or column according to the plane installation position of the ALC strip (21). A steel plate clamp is arranged in the middle and lower parts in the height direction of the corresponding strip. The U-shaped steel plate clamp is fixed to the structural wall or column using a metal bolt (33).

7. The method for actively controlling cracks during installation of lightweight interior partition wall strips of a building according to claim 1 is characterized in that: Reinforcement treatment is performed by inserting steel bar pins (34) into the corner L-shaped partition wall nodes and T-shaped wall nodes; the steel bar pins (34) are inserted deeply into the connecting wall panels, one each in the middle and the lower along the wall height direction.

8. The method for actively controlling cracks during installation of lightweight interior partition wall strips of a building according to claim 1 is characterized in that: When the ALC strips (21) are installed, the lower board seams are first embedded with hardwood wedges (51) for preliminary fixing, the ALC strips (21) are embedded with polymer anti-cracking mortar in the board seams and supported by hardwood wedges (51) until they are solidified, and the wedge openings are sealed with polymer special anti-cracking mortar; After the ALC strip board (21) is installed, the bottom of the board is filled with fine stone concrete (42). During the filling, the fine stone concrete (42) is squeezed on both sides of the wall so that the fine stone concrete (42) bulges in the inner hole of the wall board.

9. The method for actively controlling cracks during installation of lightweight interior partition wall strips of a building according to claim 1 is characterized in that: Plastering grooves are reserved at the vertical joints of the ALC strips (21), and the joints are bonded with alkali-resistant glass fiber mesh cloth (44) for crack resistance. When hanging the mesh, mortar is used to press the glass fiber mesh cloth into the joints with grooves, and after initial setting, the mesh cloth is bonded with caulking mortar (43) for crack resistance again; wide mesh cloth is bonded to the joints without grooves for crack resistance.

10. An active crack control structure for installing lightweight internal partition wall strips in a building, characterized in that: include: A building structure system (1) comprising a plurality of installation units consisting of a floor (11), shear walls / columns (12) and floor slabs / beams (13); An internal partition wall system (2) comprises an ALC strip (21), a force storage rubber belt (22), and a square steel frame (23); in one of the installation units, the ALC strip (21) is laterally connected to a shear wall or a column (12) to form an internal partition wall; A fixed component system, comprising a U-shaped steel plate clamp (31), an L-shaped pipe clamp (32), a metal bolt (33), a steel bar pin (34) and a continuous steel bar (35); in one of the installation units, the sides of the start block and the end block of the ALC strip plate (21) are fixed to the shear wall through the U-shaped steel plate clamp (31), and the top is fixed to the bottom of the floor slab or the bottom of the beam through the L-shaped pipe clamp (32); the U-shaped steel plate clamp and the pipe clamp are anchored to the concrete structure through the metal bolt (33); steel bar pins (34) are inserted into the corner L-shaped partition wall nodes and T-shaped wall nodes for reinforcement; and The anti-cracking material system comprises an adhesive (41), fine stone filled concrete (42), aerated special caulking mortar (43), and glass fiber mesh cloth (44).

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