CN102605945B - Manufacturing method of big wood formwork - Google Patents

Abstract

The invention discloses a big wood formwork. The big wood formwork on the outer side of an outer barrel of a shear wall mainly consists of a panel (1), ribs (3), crossbeams (2), hoisting rings (5) and an oppositely pulling and reinforcing system. By the aid of construction technology for the big wood formwork on the outer side of the outer barrel of the shear wall in building engineering, the big wood formwork is manufactured in a processing field, joints of the panel are close, and the big wood formwork is simple in process, convenient in operation, high in work efficiency and low in loss of materials, is safe and reliable, and effectively reduces construction cost.

Description

How to make large wooden formwork

technical field

The invention belongs to a formwork for construction engineering and a manufacturing method thereof, in particular to a large wooden formwork on the outer side of an outer cylinder of a shear wall of a construction engineering and a manufacturing method thereof. the

Background technique

The large formwork of existing construction projects is usually an assembled or integral large formwork welded by steel panels, steel ribs, etc., which is only suitable for the construction of vertical structure cast-in-place concrete projects. The production cost of large formwork is high, and transportation, storage and repair The resource investment is large, and the plane formwork still adopts various forms such as small steel formwork and wooden formwork during construction, which makes the construction process of formwork engineering more complicated and has not been widely used in many areas; currently, formwork engineering generally adopts multi-layer glued buildings The wooden formwork is used as the panel, and the square wood is used as the rib. During construction, the panel is assembled piece by piece on site and nailed to the square wood ribs one by one with iron nails. , the deviation of panel joints is large, the construction work is heavy, the amount of iron nails is large, and the loss of panels and square timber is large. the

Contents of the invention

The purpose of the present invention is to provide a large wooden formwork for shear walls in construction projects and its manufacturing method. It is made in the processing site, the panel seams are tight, the process is simple, the operation is convenient, safe and reliable, the work efficiency is high, and the material loss is small. Effectively reduce construction costs. the

The purpose of the present invention is achieved in this way, a large wooden formwork, which is characterized in that the large wooden formwork on the outer side of the shear wall outer cylinder is mainly composed of panels, ribs, beams, suspension rings and tension reinforcement systems, and the plane of the panels is rectangular. According to the height of the floor of the shear wall and the length of the outer side, the panel is made of several multi-layer glued building wooden formwork butt joints and assembled. It is larger than the height of the panel and protrudes from the top and bottom of the panel. Several ribs are parallel to the vertical side of the panel and are evenly arranged at a certain distance. There is one beam at the top and bottom, which is equal to the length of the panel. They are respectively arranged at the top and bottom of the ribs parallel to the horizontal side of the panel , and nail the beam to the back of each rib with iron nails. Two suspension rings are respectively set on the ribs at the left and right 1/4 span of the top beam. In the middle of the rib and on the left and right sides of the rib, there are pressure plates, gaskets and nuts to fasten it to the rib. The rib and the beam are made of square wood. , Composed of steel pipes. the

Before fabrication, determine the size of the large wooden formwork outside the outer cylinder of the shear wall according to the plane of the outer wall of the shear wall, and calculate the lateral pressure of the concrete to determine the spacing of the ribs and the horizontal and vertical two-way spacing of the bolt holes to ensure that the wooden formwork on the outer cylinder of the shear wall Large formwork has sufficient strength and rigidity. The production procedure is: cutting ribs, beam square timber and wood panel ingredients—drawing the height line of the beam on the left and right ribs and drawing the rib spacing line on the upper and lower beams—opening holes in the ribs at the lifting points of the rings and installing the rings—putting The beams are nailed to the ribs with iron nails according to the marking line—the rib frame is turned over with the tower crane through the ring—the diagonal line of the rib frame is checked and corrected—the bottom edge line of the panel is drawn on the rib—start along the bottom edge line Lay a panel and nail the panel and each rib firmly with iron nails—release the center line of the reinforcement bolt on the panel and drill holes for the bolt on the panel. Production quality tolerance requirements: template height ± 3 mm, template length - 2 mm, template face angle difference ≤ 3 mm, board surface flatness 2 mm, adjacent panel seam height difference ≤ 1 mm, adjacent panels The seam gap is ≤1㎜, and the center displacement of the tie bolt hole is 2㎜. the

The large wooden formwork on the outer side of the outer cylinder of the shear wall is hoisted and installed in place by a tower crane, and two-point hoisting is carried out with a wire rope passing through the lifting ring. Reinforcement bolts pass through each bolt hole to reinforce the inner and outer formwork of the shear wall, and the tension bolts pass through a section of the shear wall to set up a casing for the removal of the tension bolts. , After every two pieces are spliced and aligned, a large blade is used to clamp the two ribs at the interface, and the horizontal steel pipe joints of the reinforcement bolts are staggered and lapped according to the specifications. Permissible deviation requirements for installation quality: axis position 4mm, internal dimension of section ±2mm, layer height verticality 3mm, height difference between adjacent formwork panels 2mm, surface flatness <4mm. the

When the concrete is poured and the conditions for removing the side formwork are met, the 3 to 4 reinforcement bolts on the top layer and the 3 to 4 positioning bolts on the bottom are not loosened, and the other reinforcement bolts and positioning bolts are disassembled and removed from the Pull it out from the casing, hang the ring with the steel wire rope of the tower crane, and then disassemble the 3 to 4 reinforcement bolts on the top layer and the 3 to 4 positioning bolts on the bottom and pull them out. Lift it to the upper layer and brush the release agent for installation, and repeat the turnover. the

The present invention proposes a large wooden formwork and a manufacturing method thereof, which are manufactured at a processing site, have tight panel seams, simple process, convenient operation, safety and reliability, high work efficiency, low material loss, and effectively reduce construction costs. the

The wooden formwork construction technology proposed by the present invention will be further described in conjunction with the accompanying drawings and embodiments. the

Description of drawings

Fig. 1 is a schematic diagram of making a large wooden formwork of the present invention. the

Fig. 2 is a schematic diagram of the installation of the large wooden formwork of the present invention. the

In Fig. 1 and Fig. 2: 1. Panel 2. Beam 3. Rib 4. Bolt hole 5. Lifting ring 6. Locating pull bolt 7. Reinforced pull bolt 8. Large blade 9. Sleeve 10. Steel pipe. the

Detailed ways

It can be seen from Figures 1 and 2 that a large wooden formwork construction technology is characterized in that the large wooden formwork on the outer side of the shear wall is mainly composed of panels (1), ribs (3), beams (2), and suspension rings. (5) and the tension reinforcement system. The plane of the panel (1) is rectangular. It is made according to the height of the shear wall floor and the length of the outer side. , the rib (3) is vertically close to the back of the panel (1) and the panel (1) and the rib (3) are nailed firmly with iron nails. The length of the rib (3) is greater than the height of the panel (1) and extends above and below the panel (1) ), a number of ribs (3) parallel to the vertical side of the panel (1) are evenly arranged at a certain interval, and a crossbeam (2) has one upper and lower beams, which are equal to the length of the panel (1), and are respectively arranged parallel to the horizontal side of the panel (1). At the top and bottom of the ribs (3), nail the beams (2) to the back of each rib (3) with iron nails, and the two rings (5) are respectively set on the ribs at the left and right 1/4 spans of the top beam (2) (3), the left and right lifting rings (5) are all made of bolts, the top end is bent and welded to form a ring, the bottom end passes through the middle of the rib (3) and pressure plates, gaskets and nuts are arranged on the left and right sides of the rib (3) to It is fastened with the rib (3), the rib (3) and the crossbeam (2) are made of square wood, and the tension reinforcement system consists of positioning tension bolts (6), reinforcing tension bolts (7), sleeves ( 9), composed of steel pipe (10). the

Before fabrication, determine the size of the large wooden formwork on the outer side of the shear wall outer cylinder according to the plane of the outer wall of the shear wall, and calculate the concrete lateral pressure to determine the distance between the ribs (3) and the horizontal and vertical two-way distances between the tension bolt holes (4) to ensure that the shear wall The large wooden formwork on the outer side of the external cylinder of the force wall has sufficient strength and rigidity. The production procedure is: ribs (3), beams (2) square wood cutting and wood panels (1) ingredients - draw the height line of the beams (2) on the left and right ribs (3) and draw on the upper and lower beams (2) Rib (3) Spacing Line - Rib (3) hole at the lifting point of the lifting ring (5) and install the lifting ring (5) - Nail the beam (2) to each rib (3) with iron nails according to the marking line - Use the tower crane to turn the rib (3) frame over through the lifting ring (5) - review and correct the diagonal line of the rib (3) frame - draw the bottom line of the panel (1) on the rib (3) - start along the bottom line Lay the panels (1) one by one and nail the panels (1) and the ribs (3) firmly with iron nails - put out the center line of the reinforcement bolt (7) on the panel (1) and drill the centerline on the panel (1) Pull the bolt holes (4). Production quality tolerance requirements: template height ± 3 mm, template length - 2 mm, template face diagonal difference ≤ 3 mm, board surface flatness 2 mm, adjacent panels (1) seam height difference ≤ 1 mm, The seam gap between adjacent panels (1) is ≤1mm, and the center displacement of the pull bolt hole (4) is 2mm. the

The large wooden formwork on the outer side of the outer cylinder of the shear wall is hoisted and installed in place by a tower crane, and the wire rope is passed through the lifting ring (5) for two-point hoisting. The beam (2) is fixed, and then the reinforcement bolts (7) are used to pass through the bolt holes (4) to reinforce the inner and outer formwork of the shear wall. In order to remove the tension bolts, when the large wooden formwork outside the outer cylinder of the shear wall is lengthened, use a large blade (8) at the interface to clamp the two ribs (3) after every two pieces are spliced and aligned, and reinforce the tension bolts (7 ) Horizontal steel pipe (10) joints are staggered and lapped according to the specifications. Permissible deviation requirements for installation quality: axis position 4mm, internal dimension of section ±2mm, layer height verticality 3mm, height difference between adjacent formwork panels 2mm, surface flatness <4mm. the

When the concrete is poured and the conditions for removing the side formwork are met, the 3 to 4 reinforcement bolts (7) on the top layer and the 3 to 4 positioning bolts (6) on the bottom are not loosened, and the other reinforcement bolts (7) and positioning bolts are Pull the bolts (6) apart and pull them out from the casing (9), hang the rings (5) with the steel wire rope of the tower crane, and then position the 3-4 reinforcement bolts (7) on the top layer and the 3-4 bolts on the bottom Disassemble and pull out the pull bolts (6), and lift the large wooden formwork outside the outer cylinder of the shear wall directly to the upper layer for installation after brushing the release agent, and repeat the turnover. the

Claims (6)

1. the preparation method of a wooden large form, this wood large form is mainly by panel (1), rib (3), crossbeam (2), suspension ring (5) and to drawing hardened system to form, panel (1) plane is rectangle, according to shear wall story height and lateral surface length segmentation size, makes, rib (3) vertically near panel (1) back side and with iron nail by panel (1) and rib (3) stickfast, some ribs (3) are parallel to panel (1) vertical edge and are evenly arranged according to a determining deviation, each up and down, crossbeam (2), it is equal in length with panel (1), is parallel to panel (1) horizontal sides and is located at respectively rib (3) top and bottom part, and with iron nail, crossbeam (2) is followed closely at each rib (3) back side, (5) two, suspension ring are located at respectively head piece (2) left and right 1/4 across on the rib of locating (3), top simmering and bending are also welded into ring, pressing plate is all established through rib (3) middle part and in this rib (3) left and right in bottom, pad and nut are fastening by itself and rib (3), to drawing hardened system by locating split bolt (6), reinforce split bolt (7), sleeve pipe (9), steel pipe (10) forms, before it is characterized in that making, according to shear wall exterior wall plane, determine the outer side rail large form size of this shear wall urceolus, carrying out concrete lateral pressure calculates, determine the spacing of rib (3) and split bolt hole (4) two-way spacing anyhow, guarantee that the outer side rail large form of this shear wall urceolus has enough strength and stiffness, its production process is:

A, rib (3), crossbeam (2) lumps of wood blanking and wooden boards (1) batching;

B, in left and right, two roots (3) are upper draws crossbeam (2) altitude line and in upper rib (3) spaced lines of drawing of upper and lower two crossbeams (2);

C, rib (3) perforate of suspension ring (5) suspension centre place are also installed suspension ring (5), and crossbeam (2) is used to iron nail and each rib (3) stickfast to the layout line;

D, with tower crane, by suspension ring (5), rib (3) frame is stood up, rib (3) frame diagonal is checked and is proofreaied and correct---on rib (3), mark panel (1) hemline, along hemline start to carry out block-by-block panel (1) is laid and with iron nail by panel (1) and each rib (3) stickfast;

E, on panel (1), emit and reinforce split bolt (7) center line and in the upper split bolt hole (4) of boring of panel (1).

2. the preparation method of wooden large form according to claim 1, making quality allowable variation requires: template height ± 3 ㎜, template length-2 ㎜, template plate face diagonal is poor≤3 ㎜, plate surface evenness 2 ㎜, adjacent panels (1) piece difference of height≤1 ㎜, adjacent panels (1) gap joint≤1 ㎜, split bolt hole (4) the center displacement 2 ㎜.

3. the preparation method of a kind of wooden large form according to claim 1, is characterized in that panel (1) is that several multilayer gluing construction timber shutterings docking are assembled.

4. the preparation method of a kind of wooden large form according to claim 1, is characterized in that rib (3) and crossbeam (2) are made for the lumps of wood.

5. the preparation method of a kind of wooden large form according to claim 1, is characterized in that rib (3) length is greater than panel (1) height and equal extending panel (1) up and down.

6. the preparation method of a kind of wooden large form according to claim 1, is characterized in that left and right suspension ring (5) all make with bolt.