CN110607905A - An all-steel support reinforcement formwork system and construction method - Google Patents

Abstract

An all-steel support reinforcement formwork system of the present invention includes a column formwork support structure, a shear wall formwork support structure and a beam slab formwork support structure, wherein: the column formwork support structure includes a four-sided column formwork, a column secondary flute and a column main flute, The opposite column formworks are provided with column opposite tension screws, and the two ends of the column opposite tension screws are respectively arranged on the column main flutes on the opposite sides of the column body; the shear wall formwork support structure includes shear wall formwork, wall secondary flute and For the main wall flute, there are wall-to-wall tension screws between the opposite shear wall formwork, and the two ends of the wall tension screws are respectively connected to the wall main flute on the opposite sides of the wall; the support structure of the beam-slab formwork includes the beam-slab formwork, The beam slab formwork is located below the concrete floor slab, the beam slab secondary flute is arranged under the beam slab formwork, the beam slab main flute is arranged below the beam slab secondary flute, and the beam slab supporting frame is arranged below the beam slab main flute. The system reduces the use of wooden keels, has reliable technology, convenient operation, and reduces engineering costs.

Description

An all-steel support reinforcement formwork system and construction method

technical field

The invention relates to an all-steel support and reinforcement formwork system, which belongs to the technical field of house construction.

Background technique

Traditional building construction units often use steel pipe and wood square reinforcement system to strengthen the formwork. The steel pipe and wood square reinforcement system is more difficult to reinforce. There are common phenomena such as mold running, mold expansion, and grout leakage. After the concrete formwork is removed, it often occurs. Pockmarked surface, rotten root, abrasive belt and other construction problems. In addition, a large number of wooden squares are needed in the construction. Due to the poor retention of the wooden squares, after a certain period of use, the strength cannot meet the requirements of the supporting formwork and cannot be reused, resulting in waste. In addition, the steel pipe and wood square system cannot be stretched or expanded according to the requirements of the construction environment, and a large amount of wood will be wasted. It does not meet the goals of green construction and energy saving and emission reduction that my country is vigorously promoting in the construction market.

The all-steel support used to replace the steel pipe wood square system has been gradually applied due to the advantages of quick assembly, high turnover rate, and good quality of steel instead of wood cast-in-place structures. In the construction of engineering projects, the inventor improved the traditional steel tube wood square reinforcement system, adopted the all-steel support system, and formed the present invention after summarizing the construction practice in these two projects.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention proposes a formwork system with all-steel support and reinforcement, which reduces the amount of wooden keels used, can save resource consumption, green construction, increases the turnover rate, and achieves the purpose of energy saving and emission reduction, and The quality of the main structure can also be improved, the process is reliable, the operation is convenient, and the engineering cost is reduced.

In order to achieve the above object, a kind of all-steel support reinforced formwork system of the present invention includes column formwork support structure, shear wall formwork support structure and beam slab formwork support structure, wherein:

The support structure of the column formwork includes a four-sided column formwork, which is surrounded by a rectangular column forming space with a cross-section. For the column main flute extending in the horizontal direction, there is also a penetrating column tension screw between the opposite column formwork, and the two ends of the column tension screw are respectively arranged on the column main flute on the opposite sides of the column body;

The support structure of the shear wall formwork includes a four-sided shear wall formwork. The four-side shear wall formwork encloses a shear wall forming space with a rectangular cross-section. There is a wall main flute extending in the horizontal direction outside the flute, and there are also wall-to-wall tension screws penetrating between the opposite shear wall formwork. superior;

The supporting structure of the beam slab formwork includes the beam slab formwork. The beam slab formwork is located below the concrete floor slab. There are beam support frames.

Further, the shear wall formwork includes several wall formwork sheets connected to each other, and the joints between adjacent wall formwork sheets are provided with secondary back flute, and the thickness of the secondary back flute is the same as that of the wall secondary flute.

Furthermore, when the outer wall part of the shear wall formwork support structure is fixed with the main flute of the other wall, the external corner is used to butt the two main flutes of the wall. There are hooks for fixing. The inner wall part of the shear wall formwork support structure adopts the inner corner butt joint when the main wall is fixed with the other wall main flute. The thickness of the wooden side of the presser foot is the same as the thickness of the second flute of the wall.

Further, the beam-slab support frame includes beam-slab support rods extending vertically, the beam-slab support rods are supported under the beam-slab main corrugation, horizontal rods are connected between each beam-slab support rods, and the horizontal rods are connected in the horizontal direction. The upper cross setting, the beam-slab support rod is equipped with a scissors brace rod, the two ends of the scissors brace rod are respectively connected to the beam-slab support rod and the horizontal rod, and the two ends of the scissors brace rod are respectively provided with rotating buckles for connection pieces.

Furthermore, square steel pipes are used for the secondary corrugation of columns, secondary corrugations of walls, and secondary corrugations of beams and slabs; The butt joints between the main flutes are all joints, and the joints are provided with four bolts for connection and fixation.

Further, PVC pipes are sleeved on both the column-to-column and wall-to-column screws.

Further, cross gaskets are arranged between the main flute of the column and the tension screw of the column, and between the main flute of the wall and the tension screw of the wall.

The present invention also proposes a construction method for an all-steel support reinforcement formwork system, comprising the following steps:

S1: Installation of wall column reinforcement: first check the flatness of the ground, the highest part of the board surface is lower than the design elevation, if it is higher than the relevant elevation, it needs to be chiseled, install the wall column reinforcement, control the thickness of the reinforcement protective layer, and pull the screw on the wall Install the PVC pipe at the position of the pull screw with the column and control the verticality;

S2: Installation of column formwork and shear wall formwork: Install column formwork and shear wall formwork according to the drawings, first erect the shear wall formwork, then fix the wall secondary wall outside the shear wall formwork, and set the wall outside the wall secondary wall Main flute, then pass through the wall-to-wall screw in the PVC pipe and connect the two ends of the wall-to-wall screw to the wall main flute on both sides, and buckle the cross at the end of the wall to-pull screw located outside the wall main flute The installation process of gasket and column formwork is the same as that of shear wall formwork;

S3: Adjustment and reinforcement of column formwork and shear wall formwork: After the column formwork and shear wall formwork are installed, install temporary supports on both sides to fix them, and use a wire hammer to freely fall to test the verticality;

S4: Beam and slab formwork installation: Install the beam and slab formwork, the beam and slab secondary flute and the beam and slab main flute at the bottom of the concrete slab in sequence, and erect the beam and slab support rods to connect to the bottom of the beam and slab main flute. Horizontal rods are installed vertically and horizontally in the horizontal direction, and the distance between the bottom horizontal rod and the ground is less than or equal to 350mm. When the floor height is greater than 3.5m, the scissors support inclined rods are installed at the bottom of the beam and slab main flute;

S5: Beam and slab reinforcement installation: During the installation process, it is necessary to control the thickness of the protection layer of the reinforcement;

S6: Calibration and reinforcement of the beam and slab formwork: Check the verticality by free-falling a wire hammer, and use a level to measure its flatness and the installation elevation of this floor;

S7: Concrete pouring: Concrete pouring should be spread from the middle to the surroundings. The shear walls and columns should be poured first, and then the beams and slabs should be poured. The columns and shear walls should be poured layer by layer from bottom to top at one time.

Furthermore, before the shear wall formwork and column formwork are installed, the surface needs to be cleaned and a water-based release agent should be applied.

Furthermore, when the column formwork and shear wall formwork of the next floor are transferred to the upper floor for installation, when there are inconsistencies in structural dimensions, there will be redundant bolt holes on the column formwork or shear wall formwork, and plugs need to be used.

The all-steel-supported and reinforced formwork system of the present invention reduces the usage of wooden keels, saves resource consumption, green construction, increases the turnover rate, achieves the purpose of energy saving and emission reduction, and can also improve the quality of the main structure and the process Reliable, easy to operate, reduced engineering costs.

Description of drawings

The present invention will be further described and illustrated below in conjunction with the accompanying drawings.

Fig. 1 is the side view of column formwork support structure in a kind of all-steel support reinforcement formwork system of preferred embodiment of the present invention;

Fig. 2 is the top view of column template support structure;

Fig. 3 is a side view of the shear wall formwork support structure;

Fig. 4 is a side view of the beam-slab formwork support structure;

Figure 5 is a bottom view of the beam slab formwork support structure.

Reference signs: 11, column formwork; 12, column main flute; 13, column secondary flute; 14, column opposite tension screw; 21, shear wall formwork; 22, wall main flute; 23, wall secondary flute; 24, wall 31. Beam and slab formwork; 32. Main beam and slab flute; 33. Beam and slab secondary flute; 4. Cross gasket.

Detailed ways

The technical solution of the present invention will be explained more clearly and completely through the description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

An all-steel-supported reinforcement formwork system in the preferred embodiment of the present invention includes a column formwork support structure, a shear wall formwork support structure and a beam-slab formwork support structure, wherein:

As shown in Figures 1 and 2, the column formwork support structure includes a four-sided column formwork 11. The four-sided column formwork 11 surrounds a column forming space with a rectangular cross section. Column secondary corrugated 13, column secondary corrugated 13 is provided with column main corrugated 12 extending in the horizontal direction, and column opposite pull screw 14 is also provided between the opposite column templates 11, and the two ends of column opposite pull screw 14 are respectively Set on the column main flute 12 on opposite sides of the column;

As shown in Figure 3, the shear wall formwork support structure includes four-sided shear wall formwork 21, and the four-side shear wall formwork 21 encloses a shear wall forming space with a rectangular cross section. The wall secondary flute 23 extending in the horizontal direction is provided outside the wall secondary flute 23 with the wall main flute 22 extending in the horizontal direction, and the wall opposite tension screw 24 is also provided between the opposite shear wall formwork 21, and the wall opposite tension screw 24 The two ends of the two sides are respectively connected to the wall main flutes 22 on the opposite sides of the wall; the shear wall formwork 21 includes a number of wall formwork sheets connected to each other, and a secondary back flute is arranged on the seam between adjacent wall formwork pieces. The thickness of the back flute is the same as the wall flute 23. The outer wall part of the shear wall formwork support structure adopts the external corner butt joint when the main wall flute 22 and the other wall main flute 22 are fixed. There is a hook belt mother for fixing, and the inner wall part of the shear wall formwork support structure adopts the inner corner butt joint when the wall main flute 22 and the other wall main flute 22 are fixed, and the joint of the inner corner is made of presser foot wooden square Presser foot, the thickness of the presser foot wooden side is identical with the thickness of wall second corrugated 23.

As shown in Fig. 4 and Fig. 5, the beam slab formwork support structure comprises a beam slab formwork 31, the beam slab formwork 31 is positioned at the below of the concrete floor, and the beam slab formwork 31 is provided with a beam slab secondary flute 33, and the beam slab secondary flute 33 The beam and slab main flute 32 is arranged below, and the beam and slab supporting frame is arranged below the beam and slab main flute 32 . The beam-slab support frame includes beam-slab support rods extending vertically. The beam-slab support rods are supported under the beam-slab main flute 32. Horizontal rods are connected between the beam-slab support rods, and the horizontal rods cross in the horizontal direction. For setting, the beam slab support rod is provided with a scissors brace, and the two ends of the scissors brace are respectively connected to the beam slab support rod and the horizontal bar, and the two ends of the scissors brace are respectively provided with rotating fasteners for connection.

The column secondary flute 13, the wall secondary flute 23 and the beam plate secondary flute 33 are all made of square steel pipes; The butt joints between the flute 22 and the beam-slab main flute 32 each adopt a butt joint structure, and the butt joints are provided with four bolts for connecting and fixing. Both the column-to-pull screw rod 14 and the wall-to-pull screw rod 24 are sheathed with PVC pipes. Between the column main flute 12 and the column opposite tension screw 14, between the wall main flute 22 and the wall opposite tension screw 24, cross gaskets 4 are arranged.

A construction method of an all-steel support reinforcement formwork system of the present invention comprises the following steps:

S1: Installation of wall column reinforcement: first check the flatness of the ground, the highest part of the board surface is lower than the design elevation, if it is higher than the relevant elevation, it needs to be chiseled, install the wall column reinforcement, control the thickness of the reinforcement protective layer, and pull the screw on the wall 24 and post install PVC pipe and control verticality to the position of pull screw rod 14.

S2: Installation of the column formwork 11 and the shear wall formwork 21: Before the shear wall formwork 21 and the column formwork 11 are installed, the surface needs to be cleaned and a water-based release agent should be applied. Install the column formwork 11 and the shear wall formwork 21 according to the drawings, first erect the shear wall formwork 21, then fix the wall secondary flute 23 outside the shear wall formwork 21, set the wall main flute 22 outside the wall secondary flute 23, and then Pass through the wall-to-wall screw 24 in the PVC pipe and connect the two ends of the wall-to-wall screw 24 to the wall main flute 22 on both sides, and buckle the end of the wall to-pull screw 24 located on the outside of the wall main flute 22 The installation process of the cross gasket 4 and the column formwork 11 is the same as that of the shear wall formwork 21.

S3: Adjustment and reinforcement of column formwork 11 and shear wall formwork 21: After the column formwork 11 and shear wall formwork 21 are installed, install temporary supports on both sides and use a wire hammer to freely fall to detect the verticality. Next When the column formwork 11 and shear wall formwork 21 of the first floor are transferred to the upper floor for installation, if the structural dimensions are inconsistent, there will be redundant bolt holes on the column formwork 11 or shear wall formwork 21, and plugs need to be used.

S4: Installation of beam slab formwork 31: install beam slab formwork 31, beam slab secondary flute 33 and beam slab main flute 32 at the bottom of the concrete floor in sequence, and erect beam slab support rods connected to the bottom of beam slab main flute 32. Horizontal rods are arranged vertically and horizontally on the slab support rods in the horizontal direction, and the distance between the bottom horizontal rod and the ground is less than or equal to 350mm. When the floor height is greater than 3.5m, an expanded scissors support diagonal rod is installed at the bottom of the beam and slab main flute 32 ;

S5: Beam and slab reinforcement installation: During the installation process, the thickness of the reinforcement protection layer needs to be well controlled.

S6: Calibration and reinforcement of beam and slab formwork 31: Use a wire hammer to freely fall to check the verticality, and use a level to measure its flatness and the installation elevation of this floor.

S7: Concrete pouring: Concrete pouring should be spread from the middle to the surroundings. The shear walls and columns should be poured first, and then the beams and slabs should be poured. The columns and shear walls should be poured layer by layer from bottom to top at one time.

Specifically: in step S1, before starting to install the formwork, the flatness of the ground must be checked, and the highest point of the slab surface cannot be higher than the design elevation. The gaps between the panels are plugged with cement mortar. When installing steel bars, focus on controlling the installation deviation of steel bars and the pre-embedding of water and electricity pipelines, and strictly control the thickness of the protective layer. After the project department notifies the steel bars to pass the inspection, the vertical spacing of each wall-through screw position on the steel bar, and the horizontal spacing of each wall-through screw position with the inner support (PVC pipe) of the same width as the wall, strictly require the upper and lower directions of the inner support surface Horizontal, left and right directions are at right angles to the wall line. This process directly affects the flatness and verticality of the wall surface and should be checked by a special person.

In step S2, the maximum size of the column is 400mmx900mm. Column formwork 11 adopts 15mm thick wood formwork, 40x40 type square steel is used as column and secondary corrugation 13, and φ14 column is reinforced by tension screw 14. Sectional steel keel is used as column main corrugation 12, and the first column and main corrugation 12 are separated from the building (ground) surface The height should be ≤200mm, and the distance between each hoop is 500mm. The thickness of the shear wall is mainly 200mm thick. Take 200mm thick wall reinforcement as an example. Second wall flute 23: cross-section 40×40㎜, wall thickness 2.5㎜ square steel; wall main flute 22 is square steel, wall secondary flute 23 spacing 200mm, wall main flute 22 spacing 500mm. The horizontal distance between the wall and the pull screw 24 is 450mm, and the vertical distance between the wall and the pull screw 24 is 500mm. The distance between the main flute 22 of the first wall and the ground is less than 200mm.

Two wall formwork sheets are erected on both sides inside and outside the wall at the same time, and the vertical edges of the wall formwork sheets are respectively fixed with two secondary back ribs and the subsequent wall formwork sheets are fixedly connected, that is to say: each wall formwork sheet is connected to the wall formwork sheet The butt seams must be connected with a secondary back. Through prefabrication and tight wall tensioning screw 24, the PVC pipe is put on the tensioning screw, and the PVC pipe scale is exactly the thickness of pouring concrete, (PVC pipe: first, the two templates inside and outside are fixed-length support; second, the wall tensioning screw 24 can be reused), assemble a main wall flute 22 on the outside of the wall secondary flute 23 respectively through the wall-to-pull screw 24, and buckle the cross gasket 4 on the outside of the wall main flute 22 through the wall-to-pull screw 24 to connect the inner and outer shear walls Template 21 is fixedly connected. The first piece of shear wall formwork 21 is fixedly connected to the opposite seam of the second piece of shear wall formwork 21 and puts a wooden side (the thickness of the wooden side is the same as the wall second corrugated 23 thickness), fixed with common nails.

Draw the wall corrugation 23 to the net height of the wall, and place a wall every 200mm (referring to the center distance, when the template thickness is 1.5CM) on the basis of the wall corrugation 23 at the seam in the remaining space of the shear wall formwork 21 After the second corrugated 23 is fixed with ordinary nails, all the walls are covered with the second corrugated 23, and so on, the whole room is installed. The distance between wall corrugated 23 and the top and bottom of the wall shall not be greater than 100mm. The first wall main flute 22 is 200mm away from the ground, fixed on the wall opposite tension screw 24, fastened with the cross gasket 4, the inner and outer walls are carried out at the same time, and fixed with nuts, and the wall main flute 22 and the wall main flute 22 are used for docking connector. The connector is connected and fixed by four pins.

Horizontally every 450mm fixes a wall opposite tension screw rod 24, fixes the wall opposite tension screw rod 24 on the main flute 22 of every road wall, blocks with cross spacer 4, and fixes with nut (inside and outside symmetry). The order of reinforcement is to both ends of the inner corner, first the short limb wall and then the long limb wall, and the inside and outside are reinforced at the same time. Cross washer 4 is used on the wall to pull screw rod 24, after wall main flute 22 is fixed on the wall to pull screw rod 24, interior and exterior walls are blocked with cross washer 4, and fix with nut (inside and outside symmetry).

When the interior wall meets the corner between the building and the beam, it meets with the inner corner. Wooden square presser feet are set at the joints of the inner corners, and the thickness of the wooden squares is the same as the thickness of the second corrugation

Outer wall joins with external angle when running into corner when fixing between wall main corrugated 22 and wall main corrugated 22. In this project, two main walls with 22 rafters are used in a wrong way, and they are fixed with two hooks and mothers. When the column formwork 11 and shear wall formwork 21 of the next layer are transferred to the column wall of the previous layer for installation, if there are redundant pull screw holes on the formwork due to inconsistent structural dimensions, the pull screw holes must be plugged in Formwork is plugged to prevent slurry leakage from this hole. In addition, rubber plugs must be used at both ends of the tension screw rods of all vertical column formwork 11 and shear wall formwork 21. During the construction of the upper structure formwork on the outer wall, stairwell, etc., pre-embed the pull screw in the lower wall, hang the upper wall formwork, and set a wall main flute 22 on the lower hanging part for reinforcement.

In step S3, the surfaces of the shear wall formwork 21 and the column formwork 11 are cleaned before installation, and an appropriate amount of water-based release agent is applied. The installation of the shear wall formwork 21 must start from the corner or the position of the door and window hole or the end plate. After the two ends of the shear wall formwork 21 are fixed and corrected, the shear wall formwork 21 in the middle part of the wall is fixed. After the shear wall formwork 21 is installed, the flatness is ≤5mm, and the verticality is ≤5mm. When the slab is poured, the fixed plate of the adjustable tie rod is pre-buried, and the adjustable tie rod is installed as shown in the template drawing. The upper end of the adjustable tie rod is installed at the height of the third square steel. During the installation process, when encountering the position of the wall opposite pull screw 24, it is necessary to cover the rubber hose and the cup head with the wall opposite pull screw 24, and the two ends pass through the corresponding 21 holes of the shear wall formwork. After the shear wall template 21 has been installed, it needs to be fixed with a temporary support, and then the wall secondary flute 23 and the wall main flute 22 on both sides are installed for reinforcement, and the wall pair pull screw 24 is tightened. The tightening force of the nut of the wall to the pull screw rod 24 should be moderate to ensure the thickness of the wall. At the top corner of the shear wall formwork 21, the fixed wire hammer falls freely, and the tip of the wire hammer is aligned with the verticality control line of the floor. If there is a deviation, adjust it by adjusting the diagonal brace until the tip of the line hammer coincides with the reference control line.

In step S4, the beam-slab support frame is erected first: the standard floor of the main building of the small high-rise adopts socket-type steel pipe scaffolding, and Φ48.3×3 steel pipes are used. The distance between the sweeping rod and the floor is not more than 350mm.

When erecting, steel pipes such as beam-slab support rods and horizontal rods should be carefully inspected, and cracks, serious corrosion and bending deformation should not be used. Among them, the wall thickness of the steel pipe used for the beam-slab support rod shall not be less than 3.0mm. The beam-slab support rods are butt jointed. The distance between beam-slab support rod joints and adjacent horizontal rods shall not be greater than one-third of the step height. The joints of two adjacent beam-slab support rods should be staggered from each other, and should not be within the same step height and the same distance. The height difference between adjacent beam-slab support rod joints should be greater than 500mm. The full hall frame must be equipped with sweeping poles in both vertical and horizontal directions.

In order to ensure sufficient stability of the beam-slab support frame, in addition to setting two-way horizontal bars, scissor braces must be installed in the vertical and horizontal directions when the storey height is greater than 3.5 meters, especially the beam-slab support frame of the frame beam must be installed along the longitudinal direction. It adopts rigid support and is erected with steel pipes. The bottom connection point of the scissors brace is not more than 500mm from the ground to ensure the rigidity and stability of the beam and slab support frame. The width of the scissors support should not be less than 6m, and the angle between the scissors support inclined bar and the ground must be between 45° and 60°. The length of the scissors brace diagonal rod should be lapped, and the lap length should not be less than 1m. It should be fixed with no less than two rotating fasteners. 100mm. The scissors braces should be fixed to the intersecting horizontal rods or beam-slab support rods with rotary fasteners.

After the template support frame is erected, it must pass the acceptance before entering the next operation. During the pouring of concrete, send special personnel to observe the deformation of the formwork and its supporting system. The supporting load-bearing frame of the whole hall must wait until the concrete strength of the roof reaches more than 80% before dismantling, and the large-span and overhanging parts must reach more than 100% before dismantling. It is strictly forbidden to dismantle any rods of the full hall frame at will.

Requirements for erecting beam slab formwork 31, beam slab main flute 32 and beam slab secondary flute 33: the beam and slab main flute 32 of the roof should be parallel to the short side direction of the roof, the free end of the beam and slab main flute 32 cantilever ≦ 300mm, and the distance should be according to the formwork The scheme requires configuration. The beam-board secondary flute 33 of the top plate meets the side-to-side distance ≤ 200mm, and the distance from the end of the beam-plate secondary flute 33 to the wall edge ≤ 100mm, and the joint position of the beam-slab formwork 31 can be fixed by ladle wood or wooden square nails. The secondary flute 33 of the beam and slab is lapped at the main flute 32 of the beam and slab, and the lap length is ≧300mm. The beam slab support rod in the short side direction is ≦300mm from the wall end, the mid-span distance is ≦1200mm, the free height of the jacking is ≦200mm, and the distance between the horizontal rod on the top layer of the beam slab support rod and the 31 support points of the beam slab formwork is ≦500mm. The backing plate is placed at the bottom of the beam support bar. The beam slab formwork 31 of the top plate is assembled using the standard whole board and matching board combination. After optimizing the matching diagram, use a precision panel saw to carry out centralized matching according to the number of the matching diagram, and mark the number and specification on the back of the board, and classify Stacked for storage. The adjustment of the platform board should adopt the method of making it higher than lower, the position of the distribution machine should be fixed in advance, and the support system should be strengthened.

In steps S5 and S6, the installation of beam and slab reinforcement should be supervised by a special person. Mainly in order to prevent workers from destroying or moving the beam-slab formwork 31 that has been constructed. After the beam and slab steel bars are installed, the thickness of the protective layer of the steel bars should be well controlled, and it is strictly forbidden for the steel bars to directly contact the formwork to cause deformation and displacement of the formwork. Beam and slab reinforcement shall be checked and accepted according to the standard acceptance procedure, and no concrete shall be poured if the acceptance is not passed. Carry out the beam slab formwork 31 installation at the bottom of the floor beam after the vertical correction of the wall body is completed, the beam slab formwork 31 of the floor beam should be installed with the bottom form earlier, and install the side form after correcting the vertical. When the diagonal line of the floor is checked correctly, the floor formwork will be installed. For quick installation, the floor formwork should be arranged in parallel one by one. During the installation period, the levelness should be adjusted with a single support. After the formwork of each unit is installed, use a level to measure its flatness and the installation elevation of this floor. If there is any deviation, it will be corrected through the adjustable support of the formwork system until the overall flatness and corresponding elevation are achieved. After the level and elevation of each unit are adjusted, the level and elevation of the entire floor shall be checked once, and the flatness of the floor shall be ≤8mm. Check whether the pull screw 24 of the wall is tightened, and check whether the supporting frame of the beam is tight.

In step S7, the concrete should be spread from the middle to the surroundings during pouring to prevent overall displacement of the formwork. The wall columns are poured first, and then the beams and slabs are poured. All columns and shear walls are poured at one time, but they need to be poured twice and poured in layers from bottom to top to ensure that each pouring does not exceed 1.5 meters and is evenly pounded. When pouring concrete, care should be taken to prevent delamination and segregation of the concrete. The stairs are poured three times, and the air vents on the step must be opened each time they are poured to prevent air bubbles and honeycombs. When pouring double-layer window sills, the upper and lower parts need to be poured separately to prevent arching due to excessive internal gas when pouring the window sills. The vertical concrete pump pipe cannot be in rigid contact with the steel support formwork. The pump pipe must be fixed on the two floors below the working surface, and the pump pipe on the floor needs to be shock-proof with rubber pads. When pouring concrete, attention should be paid to protecting the steel bars, and once the steel bar skeleton is deformed or displaced, it should be corrected in time. Reinforcement measures should be taken for important joints of steel skeleton. For beam slab concrete pouring, beams are poured first, and then poured in layers according to the height of the beam into a ladder shape. When the bottom of the slab is reached, it is poured together with the concrete of the slab. As the ladder shape continues to extend, the beam slab concrete pouring proceeds continuously. Concrete Vibration: Concrete is poured by vibrating with a plug-in vibrating rod. After the concrete is poured, it must be vibrated and compacted. The vibrating rod should be inserted quickly and pulled out slowly. The insertion points should be evenly arranged, moved point by point, and carried out sequentially, without omission, the moving distance should not be greater than 1.5 times the radius of action of the vibrating rod, controlled within 30-40cm, and the vibrating time of each vibration point should be controlled between 15-30s , the performance is that the concrete starts to bleed and does not bubble, and it is re-vibrated after 20 to 30 minutes. When vibrating the upper layer, insert 5cm into the lower layer to eliminate the seam between the two layers. During the whole vibrating operation, do not vibrate the mold and vibrate the ribs, and do not collide with various embedded parts. During the pouring process, it is necessary to organize carpenters and steel workers to cooperate with the pouring of concrete in time to repair the problems that arise in time. The moving distance of the flat vibrator shall be such that the flat plate of the vibrator covers the vibrated edge. Before the initial setting of the concrete, a plate vibrator is used to carry out secondary vibration on the bottom surface of the pouring junction and the junction of the column, wall, ladder well wall and the bottom slab to improve the crack resistance of the concrete. After the concrete is vibrated, the surface treatment of the concrete is carried out before the initial setting. After the concrete is poured and the water is collected before the initial setting, the bricklayer team shall be organized to grind and compact it with wooden molds to close the water collection cracks. Leveling and closing: After the concrete pouring is completed, the bricklayer starts to level the work. The bricklayer uses a 3m scraper to level the concrete according to the previously welded elevation control bars. The roof concrete is calendered twice, and the first time the concrete surface is smoothed according to the elevation with a wooden trowel. The second time of smearing: when the surface layer starts to condense, and there are footprints on the ground surface layer but not sinking, use an iron trowel to perform the second time of smearing, pay attention not to leak pressure, and flatten the pits, trachoma and footprints on the surface layer, And use a straight broom to sweep out straight stripes along the length of the room.

The all-steel-supported and reinforced formwork system of the present invention reduces the usage of wooden keels, saves resource consumption, green construction, increases the turnover rate, achieves the purpose of energy saving and emission reduction, and can also improve the quality of the main structure and the process Reliable, easy to operate, reduced engineering costs.

The above specific embodiments are only descriptions of preferred embodiments of the present invention, rather than limiting the protection scope of the present invention. On the premise of not departing from the design concept and spirit of the present invention, all the modifications, substitutions and improvements made by those skilled in the art to the technical solution of the present invention according to the written description and drawings provided by the present invention shall belong to protection scope of the present invention. The protection scope of the present invention is determined by the claims.

Claims (10)

1. An all-steel support reinforcement formwork system, is characterized in that, comprises column formwork support structure, shear wall formwork support structure and beam slab formwork support structure, wherein: The support structure of the column formwork includes a four-sided column formwork, and the four sides of the column formwork are surrounded by a column forming space with a rectangular cross-section. There are column main flutes extending in the horizontal direction outside the column and secondary flute, and there are also column tension screws penetrating between the opposite column templates, and the two ends of the column tension screws are respectively arranged on the two opposite sides of the column body. On the main column of the side column; The support structure of the shear wall formwork includes four shear wall formworks, the four sides of the shear wall formwork surround a shear wall forming space with a rectangular cross-section, and the shear wall formwork is provided with vertically extending The wall secondary flute is provided with a wall main flute extending in the horizontal direction outside the wall secondary flute, and there is also a wall-to-wall tension screw through the opposite shear wall formwork, and the two ends of the wall to-tension screw Respectively connected to the wall main flute on opposite sides of the wall; The support structure of the beam slab formwork includes a beam slab formwork, the beam slab formwork is located below the concrete floor, a beam slab secondary flute is provided below the beam slab formwork, and a beam slab main flute is arranged below the beam slab secondary flute. flute, the beam-slab supporting frame is arranged under the main flute of the beam and slab. 2. A kind of all-steel support reinforcement formwork system as claimed in claim 1, is characterized in that, described shear wall formwork comprises some wall formwork pieces that are connected to each other, on the seam between adjacent said wall formwork pieces A secondary back flute is provided, and the thickness of the secondary back flute is the same as that of the wall secondary flute. 3. A kind of all-steel support reinforcement formwork system as claimed in claim 1, characterized in that, the outer wall part of the support structure of the shear wall formwork adopts the external angle butt joint when the wall main flute and another wall main flute are fixed , the two wall main flutes on the external corner are staggered, and the connection points of the two wall main flutes are provided with hooks for fixing. The inner wall part of the shear wall formwork support structure When fixing with the other main flute of the wall, use the inner corner butt joint, and use the presser foot wooden square presser foot at the seam of the inner corner, and the thickness of the presser foot wooden square is the same as the thickness of the wall second flute. 4. A kind of all-steel support reinforced formwork system as claimed in claim 1, characterized in that, the beam-slab support frame includes a beam-slab support rod extending vertically, and the beam-slab support rod is supported on the beam-slab support rod Below the main flute of the slab, horizontal bars are connected between the beam and slab support bars, and the horizontal bars are arranged crosswise in the horizontal direction. The two ends of the bar are respectively connected to the beam-slab support bar and the horizontal bar, and the two ends of the scissors brace are respectively provided with rotating fasteners for connection. 5. A kind of all-steel support reinforcement formwork system as claimed in claim 1, characterized in that, the secondary corrugation of the column, the secondary corrugation of the wall and the secondary corrugation of the beam plate all adopt square steel pipes, and the main corrugation of the column and the main corrugation of the wall Both the beam and slab main flute adopt paired steel keels, and the butt joints between the column main flute, the wall main flute and the beam and slab main flute all use butt joints, and the butt joints are provided with four for Connect the fixed pin. 6. A kind of all-steel support reinforcement formwork system as claimed in claim 1, characterized in that, PVC pipes are sleeved on the column tension screws and the wall tension screws. 7. A kind of all-steel support reinforcement formwork system as claimed in claim 1, characterized in that, between the column main flute and the column opposite tension screw, and between the wall main flute and the wall opposite tension screw, cross pads are arranged. gasket. 8. The construction method of a kind of all-steel support reinforcement formwork system as claimed in any one of claims 1-7, is characterized in that, comprises the steps: S1: Installation of wall column reinforcement: first check the flatness of the ground, the highest part of the board surface is lower than the design elevation, if it is higher than the relevant elevation, it needs to be chiseled, install the wall column reinforcement, control the thickness of the reinforcement protective layer, and pull the screw on the wall Install the PVC pipe at the position of the pull screw with the column and control the verticality; S2: Installation of column formwork and shear wall formwork: Install column formwork and shear wall formwork according to the drawings, first erect the shear wall formwork, then fix the wall secondary wall outside the shear wall formwork, and set the wall outside the wall secondary wall Main flute, then pass through the wall-to-wall screw in the PVC pipe and connect the two ends of the wall-to-wall screw to the wall main flute on both sides, and buckle the cross at the end of the wall to-pull screw located outside the wall main flute The installation process of gasket and column formwork is the same as that of shear wall formwork; S3: Adjustment and reinforcement of column formwork and shear wall formwork: After the column formwork and shear wall formwork are installed, install temporary supports on both sides to fix them, and use a wire hammer to freely fall to test the verticality; S4: Beam and slab formwork installation: Install the beam and slab formwork, the beam and slab secondary flute and the beam and slab main flute at the bottom of the concrete slab in sequence, and erect the beam and slab support rods to connect to the bottom of the beam and slab main flute. Horizontal rods are installed vertically and horizontally in the horizontal direction, and the distance between the bottom horizontal rod and the ground is less than or equal to 350mm. When the floor height is greater than 3.5m, the scissors support inclined rods are installed at the bottom of the beam and slab main flute; S5: Beam and slab reinforcement installation: During the installation process, it is necessary to control the thickness of the protection layer of the reinforcement; S6: Calibration and reinforcement of the beam and slab formwork: Check the verticality by free-falling a wire hammer, and use a level to measure its flatness and the installation elevation of this floor; S7: Concrete pouring: Concrete pouring should be spread from the middle to the surroundings. The shear walls and columns should be poured first, and then the beams and slabs should be poured. The columns and shear walls should be poured layer by layer from bottom to top at one time. 9. The construction method of a kind of all-steel support reinforcement formwork system as claimed in claim 7, is characterized in that, before shear wall formwork and column formwork are installed, its surface needs to be cleaned up, and smears water-based release agent. 10. The construction method of a kind of all-steel support reinforcement formwork system as claimed in claim 7, it is characterized in that, when the column formwork and the shear wall formwork of the next floor are turned over to the upper floor for installation, when there are inconsistent structural dimensions, it will cause There are redundant bolt holes on the column formwork or shear wall formwork, and plugs are required.