KR100339440B1 - Construction method using mold equipped with shape steel and plywood - Google Patents

Abstract

PURPOSE: An installation method for a steel composite slab form is provided to heighten stability by using steel materials for a form and to shorten a period of construction by manufacturing a steel composite form in a factory. CONSTITUTION: The installation method for a steel composite slab form comprises the steps of: placing a square bar(20) on the top of a shape steel(12), then fixing with a bolt(26), welding both sides of a strut(18) to the shape steel(12), manufacturing plywood(22) to be fixed on a portion of the strut(18) welded on the shape steel(12) and the top of the square bar(20), then locating each strut(18) under the end of an upper flange(34) of a steel box(30), placing a clamp(14) on a projection of the upper flange(34) of each steel box(30), then fixing the clamp(14) and the strut(18) with a bolt(28), installing a protective plate(16) between each clamp(14) and the strut(18) and arranging steel composite forms(10) on the steel box(30) at 50cm intervals.

Description

Construction method using mold equipped with shape steel and plywood}

The present invention relates to a method for constructing a pier upper part and a formwork installed before slab concrete pouring of a building for bridge and building construction, and more specifically, each steel box in a state where a plurality of steel boxes are installed at the upper end of the pier. It is related to the method of constructing the composite slab formwork used in the construction of bridges and buildings where the plywood can be installed on the upper part of the flange after fixing the section steel, which is a rigid formwork, is installed at intervals of 50 centimeters.

In general, in order to install the formwork in the construction of the structure for the upper slab concrete pouring bridge according to the conventional bridge hypothesis, first, as shown in Figure 5 a plurality of steel box 120 lower flanges installed on top of the pier 140 After installing the wood brushing copper ball 220 on the protruding portion of the 280, the wood beam 160 in the longitudinal direction is laid and the bottom plate formwork 100 is installed, and the upper part of the wood beam 160 of the formwork 100 The concrete box is placed on the steel box 120 and the formwork 100 in a state in which the plywood 240 is fixed to match the height of the steel box 120, and the concrete form is completed, and then the formwork 100 is dismantled. The above construction has the advantage that it is easy to track and inspect and maintain the maintenance when the crack occurs due to the exposed concrete surface. As well as very unfavorable and that the falling object protection facilities if you need air soyodoem and also lower the public had a lot of problems that cost is excessive consumption.

Second, as shown in FIG. 6, in the state where the plurality of steel boxes 120 are installed at the upper end of the bridge 140, the grooves 200 are formed between the respective deck boxes 180 in which the grooves 200 are broken between the steel boxes 120. The construction of 100) places the concrete on the upper part and it is used permanently without dismantling the formwork even when the concrete work is completed.

However, the construction as described above is excellent in workability and stability, excellent in bridges and high-rise bridges under construction, air shortening is possible, and construction costs are low. There is a problem in that the inspection is not very disadvantageous in terms of maintenance and at the same time the welding stress is generated by welding to the upper flange to reduce the strength.

The present invention has been made in order to solve the above problems, the purpose is to produce a steel composite slab formwork between the steel box installed on the upper end of the pier can be shortened by air production in the factory manufacturing and the crack investigation by the concrete surface exposure and It is to provide a method of constructing a composite slab formwork used in the construction of bridges, which can be easily maintained and managed, and has excellent workability and stability while reducing construction costs.

In order to achieve the above object, the present invention is a steel composite die installed between each steel box in order to assemble the lumber with bolts inside the upper section of the section steel and weld and bolt the support members at both ends of the section steel and the lower end of the steel box It is achieved by fixing and assembling and fixing with the support member and the bolt while the clamp is placed at the upper end of the steel box, and providing a construction method in which a protective plate is installed between the clamp and the support member, and a plywood is installed on the upper part of the steel box. do.

1 is a schematic diagram showing a state in which the present invention is mounted

Figure 2 is a front cross-sectional view illustrating the present invention

Figure 3 is a plan sectional view showing the present invention

4 is a side cross-sectional view of the present invention

5 and 6 is a schematic cross-sectional view showing a state in which the conventional formwork is installed

7 is an exemplary view showing another embodiment in which the formwork of the present invention is installed

8 and 9 are enlarged exemplary views showing a part of FIG. 7;

10 and 11 are exemplary views showing still another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

(10): steel composite formwork

(12): section steel

14: clamp

16: protector

(18): support member

20: each item

(22): plywood

(24) tab

(26) (28): Bolt

30: steel box

(32): piers

34: upper flange

36: lower flange

Hereinafter, the construction method and operation of the present invention with reference to the accompanying drawings.

1 is a schematic view showing a state in which the present invention is mounted,

Figure 2 is a front cross-sectional view illustrating the present invention,

3 is a plan cross-sectional view illustrating the present invention,

4 is a cross-sectional illustration of one side of the present invention, in the construction of the formwork used in the construction of the bridge to the steel composite (steel + plywood) in the construction, the construction of the steel composite formwork (10) is a section steel 12 Inside the upper end of the lumber 20 to be fixed with bolts 26, both sides of the support member 18 to the inside of the upper end of both sides of the shape steel 12 is welded fixed to the shape steel 12, and also on top of the shape steel 12 In the state where the plywood 22 is manufactured and installed to be fixed to a part of the weld-fixed support member 18 and the upper surface of the lumber 20, each support member 18 is end of the steel box 30 and the upper flange 34. Place them at the bottom respectively.

In addition, the clamp 14 is mounted on the top of the protrusion of the upper flange 34 of each steel box 30, and the clamp 14 and the support member 18 are fixed by bolts 28, respectively. The protective plate 16 is inserted and installed between the 14 and the support member 18, and the rigid formwork 10 is disposed on the steel box 30 at 50 cm intervals.

In the accompanying drawings, reference numeral 24 denotes a tab, and 36 is a lower flange.

The operation of the present invention will be described with reference to the construction method as described above.

The inner end of the section steel 12 is inserted into the lumber 20 and fixed to the bolt 26 from the outside of the section steel 12 is inserted into the corner wood 20 and the support member on the inner top of both sides of the section steel 12 One side of the 18 is welded and fixed to the section steel 12 and the other side is formed to protrude to the outside of the section steel 12, the plywood 22 to a part of the welded fixed support member 18 and the top surface of the lumber 20 ) Is fixed to the support member 18 protruding out of the shape steel 12 to the lower end of the upper flange 34 of the steel box 30, the clamp 14 in the upper portion is fixed by a bolt (28) When the protection plate 16 is inserted into the space generated between the clamp 14 and the support member 18 when placing the slab concrete on the top of the formwork 10 and the steel box 30 fastened with a bolt 28 When the concrete pouring work is completed, loosen the bolts 28 fastened to the clamps 14 and the support member 18, respectively, the amount of the steel 12 The steel composite formwork 10, which is constructed of the support member 18 welded and fixed to the inside of the side top and the plywood 22 on the upper part of the steel 12, is dismantled from slab concrete, so that the dismantling work is convenient and the respective steel boxes The clamp 14 taken on the upper flange 34 is fixed to the upper portion of the steel box 30 by concrete pouring.

In addition, since the steel composite formwork 10 can be dismantled after the slab concrete is completed, it will be possible to investigate when cracks occur in the bridge due to the exposed concrete surface.

In addition, another embodiment of the present invention will be described.

Example 1

7 to 9 show another embodiment of the formwork used in the bridge construction of the present invention, the slab formwork between the PC beam 500 for placing slab concrete on top of the PC beam 500 during the bridge construction As shown in FIG. 8, in the construction of 10, the die 10 is positioned at an angle 38 below the clamp 14 while welding the clamp 14 to both ends of the PC beam 500. Fix the clamp 14 and the angle 38 with the bolt 28, insert the washer 40 between the bolt 28 and the clamp 14, and the steel plate 52 between the clamp 14 and the angle 38. Insert).

In addition, the bracket 54 is welded and fixed to one side of each angle 38, and the square pipe 50 is embedded in the bracket 54 to be fixed by bolts 28 ′, and the square pipe 50 is placed on top of the square pipe 50. Take off (20) and the plywood (22) in the upper end of the wood board (20) is to be configured.

In the accompanying drawings, reference numeral 42 is a reinforcing bar, 300 is a girder, and 400 is a cantilever.

And, Figure 9 is to form the die 10 on one side of the PC beam 500 located at the left and right ends, forming a bracket 54 on the outside of one end of the square pipe 50 and the upper end of the square pipe 50 The bracket 54 is fixed to the fixing member 46 fixed to the upper end of one side of the PC beam 500 in the state where the wood block 20 is removed, and the clamp 14 is attached to the upper end of the PC beam 500. Fixed by the angle 38 and the bolt 28 fixed integrally with the fixing member 46, and the square pipe 50 is formed in a straight line on the PC beam 500, the square pipe 50 is In order to prevent deflection in the downward direction, the pipe 44 is fixed to the hinge 48a in a diagonal direction to one side of the square pipe 50 and the shaped steel 12a.

The plywood 22 is removed from the upper end of the lumber 20 and a washer 40 is formed between the bolt 28 and the clamp 14.

After the formwork is completed, the slab concrete 700 is poured into the top of the formwork 10 as shown in FIG. 7, and the formwork 10 is dismantled after the slab concrete 700 is solidified.

Example 2

10 and 11 show the structure for installing the formwork used in the building construction, Figure 10 is fixed to the bottom of the plywood (4) with a nail (3) with a nail (5) and the section steel at the bottom of the wooden (3) (2) is fastened with a screw (6) to form a bracket (54) with a plurality of holes (56) perforated outside one end of the shaped steel (2) to weld and fix the plate (7) on the bracket (54); In addition, the H-beam 600 is positioned between the plywood 4 and the plywood 4 with the angle 38 fixed to the lower end of the plate 7 so that the lower angle 38 of the H-beam 600 is lower. And bolt (8) to fasten the clamp (9) between the bolt (8).

As such, the slab concrete 700 is poured on the top of the plywood 4 while the formwork 1 is fastened.

11 is fixed to the bottom of the plywood (4) with a nail (5), fastening the section steel (2) with a screw (6) at the lower end of the corner board (3) and the plate (on one end of the section steel (2) 7) while fixing the H-beam 600 between the plywood (4) and the plywood (4) by fastening the plate (8) and bolt (7) to the upper end of the H-beam 600, In the state in which the clamps 9 are fastened between the bolts 8, the slab concrete 700 is poured on the top of the plywood 4.

The present invention is a steel composite formwork made of steel and plywood between the steel box and the PC beam installed on the top of the pier used for slab concrete pouring during the construction of the bridge is installed at 50cm intervals from the steel box and then the steel composite formwork By installing bolts on the support member that is welded and fixed on the upper end of both sides of the section steel and bolts on the upper flange of the steel box, the construction is excellent in standardized construction and the stability is excellent by using the steel of the formwork. Since the formwork is manufactured and installed at the factory, it is possible to shorten the air.

Also, after the slab concrete is finished and installed, it is possible to dismantle the form after the installation and manufacture of steel composite formwork. In addition, it is a very useful invention that can reduce the construction cost when working bridges.

Claims (3)

In manufacturing and constructing the formwork used in the construction of bridges with steel composite (steel + plywood), The construction of the steel composite formwork (10) is embedded in the wood (20) on the upper end of the section steel (12) to be fixed with bolts 26 and both sides of the support member (18) inside the upper ends of the section steel (12) 12) welded to the support member, and each support member in a state in which the plywood 22 is manufactured and installed to be fixed to a part of the support member 18 welded to the upper portion of the section steel 12 and the upper surface of the wood block 20 (18) is positioned below the ends of the upper flange (34) of the steel box (30), Clamp 14 is mounted on top of the protrusion of the upper flange 34 of each steel box 30, and the clamp 14 and the support member 18 are fixed by bolts 28. And inserting the protective plate (16) between the support member (18) and the steel composite formwork (10) disposed on the steel box (30) at intervals of 50 cm, the composite slab formwork construction method. In the construction of the formwork used in the construction of bridges, In the construction of the die 10, the clamp 14 and the angle 38 are positioned by placing an angle 38 below the clamp 14 while welding the clamp 14 to both ends of the PC beam 500. ), The washer 40 is inserted between the bolt 28 and the clamp 14, and the iron plate 52 is inserted between the clamp 14 and the angle 38, respectively. Bracket (54) is fixed to one side of the angle (38) of the square pipe 50 to the bracket (54) to be fixed with a bolt (28 ') and the square pipe (50) on top of the square pipe (50) Rigidity and slab formwork construction method characterized in that the plywood 22 in the upper end of the wood block 20. In manufacturing the formwork used in building construction, Fixing the lumber (3) to the bottom of the plywood (4) with a nail (5) and fastening the section steel (2) to the lower end of the lumber (3) with a screw (6) and a plurality of holes (56) outside one end of the section steel (2) ) Forms a perforated bracket (54) to weld the plate (7) to the bracket (54), and also to the plywood (4) and plywood with the angle (38) fixed at the lower end of the plate (7). Position the H-beam 600 between (4) to fasten the lower angle 38 and the bolt (8) of the H-beam 600, characterized in that the clamp (9) between the bolt (8) Composite slab formwork construction method.