KR100292844B1 - Flexible frame structure using cross beam and its manufacturing method - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Flexible frame structure using cross beam and its manufacturing method

2. The technical problem to be solved by the invention

The present invention can reduce the advice by the height of the flooring material by structuring the non-structure of the flooring material such as the floor slab and the ondol installed on the slab as a part of the beam, the cross-sectional size of the inverted T-beam as in the T-beam It is an object of the present invention to provide a flexible frame structure using a cross beam that has a rigidity and strength suitable for a large equilibrium and a high-rise apartment by increasing the cross-sectional size by expanding the lower portion of the slab.

3. Summary of Solution to Invention

The present invention relates to a beam structure comprising a beam having a predetermined height and width, and a bottom slab extending longitudinally from both sides of the beam; And it provides a floor structure using a cross-beam comprising a flooring material filled in the floor slab at least the same height as the height of the upper surface-side beam protruding to the upper surface of the floor slab of the beam structure.

4. Important uses of the invention

It can be applied to large flats or high-rise apartments to reduce the specific load and weight of the interior and exterior walls, and to reduce the advice by the height of flooring materials such as ondol.

Description

Flexible frame structure using cross beam and its manufacturing method

The present invention relates to a flexible frame structure applied to the construction of a variable apartment, in particular the non-structure of the flooring material such as floor slab and ondol installed on the slab structured as a part of the beam, the cross-sectional size of the inverted T-beams T The present invention relates to a flexible frame structure using cross-shaped beams that have a stiffness and strength suitable for large equilibrium and high-rise apartments by expanding under the slab as in the beam.

The conventional frame structure type is a moment flexible frame structure in which a plurality of beams are supported by columns. Here, the cross-sectional shape of the portion where the beam and the slab meets has a T-shape in which the slab is positioned at the top of the beam for reasons of use and construction of the building, and the construction of the T-beams is performed at the same time with the floor slab and concrete pouring.

When the T beam of the above structure is applied to the variable apartment as it is, it is not visually good that the beam 13 protruding from the ceiling protrudes into the living space as shown in FIG. 1, and thus the T beam as shown in FIG. 2. The floor slab (12) and the ceiling between the finishing material (14) using the moon 15 to finish the ceiling flat.

Here, in order to satisfy the minimum ceiling height (height from the floor slab to the ceiling) prescribed in the building code at the time of finishing the ceiling, the following problems occurred. First, when the ceiling height is set to the bottom surface of the beam 13, the floor height must be increased for each unit floor as much as the dance of the beam 13 protruding below the bottom slab 12, thereby lowering economic efficiency. Will be. On the other hand, when the ceiling height is set to the bottom surface of the floor slab 12, the protrusion of the beam 13 protruding into the inner space restricts the occupant's use of the inner space, thereby reducing the occupant's living environment. It is a factor.

Therefore, in order to solve the above problem, an apartment adopting a flat plate structure type has been proposed. It is a frame structure that supports multiple points of the lower part of the bottom slab directly by the column in a non-beam form, and the load applied to the entire surface of the floor slab is transferred to the column through the support point of the slab. By removing the beam, such flat plate-type apartments can minimize the height of the floor structure compared to the case of the frame structure using the T-beam, and it is possible to secure the apartment frame structure freely utilizing the internal space. However, in spite of the above advantages, the flat plate structural type has the following constructional and structural problems.

The flat plate structure can minimize the height of the apartment, but the slab bottom supported by the column increases the two-way shearing force (punching share) around the column, resulting in difficulty in designing the interior space due to the structural design difficulty. Could not secure enough space. Accordingly, in order to overcome the shear force around the column and to provide variability, a method of supplementing the strength of the flat plate frame structure by applying shear reinforcement to the stress concentration region has been proposed. Many of them could not be put into practical use as the frame structure of variable apartments. Therefore, the flat plate frame structure in the variable apartment has the advantage of minimizing the floor height, but has not been put to practical use due to problems in structure and construction.

As described above, the flat plate structure of the conventional apartment can minimize the height of the floor by removing the protrusion of the beam in the residential space, but it is difficult to be practical due to problems in design and construction, and the frame structure type using the T-beam The variability of the interior space can be secured, but there is a problem that the economic efficiency is reduced due to the increase in the floor height.

Therefore, the present invention devised to solve the problems as described above, by reducing the height of the flooring material by structuring the non-structure of the flooring material such as the floor slab and the ondol installed on the slab as a part of the beam, It is an object of the present invention to provide a flexible frame structure using cross-shaped beams having rigidity and strength suitable for large equilibrium and high-rise apartments by increasing the cross-sectional size by increasing the cross-sectional size of the inverted T-beams to the bottom of the slab as in the T-beams.

1 is a schematic view showing a conventional apartment frame structure.

2 is a construction state of the floor structure using a conventional T-beam.

3a and 3b is a perspective view and a cross-sectional view showing an embodiment configuration of the cross-shaped beam according to the present invention.

Figure 4 is a perspective view showing a half precast according to the production of the cross-shaped beam according to the present invention.

5 is a state in which half the precast of FIG. 4 is embedded in the formwork.

6 is a perspective view showing a state in which the cross beam formed after the concrete of FIG. 5 is supported by a column.

<Explanation of symbols for main parts of drawing>

11: pillar 12: slab

13: beam 14: ceiling

15: ceiling stand 31: beam structure

32: pillar 41: upper beam

42: lower beam 43: floor slab

44: Flooring 50: Half Precast Beam

51: shear bar 52: upper bar

54 slab reinforcement 55 connector

56: piping facility 61: T-shaped formwork

62: Bo Formwork 63: Slab Formwork

In order to achieve the above object, the present invention, a beam structure consisting of a beam having a predetermined height and width, and a bottom slab extending in the longitudinal direction on both sides of the beam; And a bottom beam filled with the bottom slab at least the same height as the height of the upper side beam protruding to the bottom slab upper surface of the beam structure.

In addition, the present invention comprises a first step of weaving the upper reinforcing bars of both sides bent on the upper side of the shear bar is constantly aligned with a predetermined height and width to form a rectangular prosthesis assembly; A second step of casting and curing concrete to form a half precast beam so that an upper beam having a predetermined thickness is formed on an upper side of the reinforcing bar assembly; A third step of manufacturing a T-shaped formwork consisting of a beam formwork having a predetermined depth so as to embed the shear rebar exposed to the half precast beam and slab formwork formed on both sides of the beam formwork; A fourth step of weaving a slab reinforcement assembly into a predetermined mesh and embedding the slab formwork in the slab formwork and embedding a half precast beam in the formwork; And it provides a method of manufacturing a soft skeleton structure using the cross-shaped beam comprising a fifth step of forming a cross-beams by placing and curing concrete in the beam formwork and slab formwork.

Flexible frame structure using a cross beam according to the present invention and its manufacturing method is to implement to be applied to a large equilibrium or high-rise apartment by expanding the cross-sectional size of the beam to the top of the floor slab, the moment flexible skeleton method consisting of beams and columns The moment flexible frame that can bear more than 25% of the seismic force is combined with the shear wall or bracing frame so that the vertical load and lateral force can be applied according to the stiffness ratio of the vertical component of the building, or the shear wall or brace independently of the moment frame It is a soft frame structure including a double frame system so that the frame can bear all the lateral forces.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings of FIG. 3.

In the embodiment of the present invention, as shown in Figures 3a and 3b in the residential apartment building using the point that the flooring 44, such as non-structured ondol, flooring is installed on the floor slab 43, flooring such as ondol By constructing the non-structure of the beam as a part of the beam, the dance of the T beam is expanded to the upper part of the floor slab, and the structure of the bottom slab is reduced compared to the existing T beam.

That is, in one embodiment of the present invention, the beam structure 31 consisting of upper and lower beams 41 and 42 formed in the longitudinal direction with a predetermined height and width and a bottom slab 43 extending by a predetermined length on both sides of the beam. And a flooring material 44 filled with the floor slab 43 at a height at least equal to the height of the upper beam 41 protruding from the upper surface of the floor slab 43 of the beam structure 31. Has a structure including a flooring such as. At this time, the lower beam 42 protruding to the bottom of the bottom slab 43 is designed and manufactured to a height in consideration of the height of the upper beam 41, in this embodiment the height of the beam protruding from the conventional T-shaped beam Has a structure formed by subtracting the height of the upper beam (41).

This is to increase the economic efficiency by reducing the height of the protrusion by the T-beams in the frame-type apartment using the conventional T-beams by the height of the beams protruding from the inverted T-beams.

With the structure as described above, the height of the beam in the high-rise apartment of the existing frame structure type can be increased to have rigidity and strength in a long span that cannot be designed as a T-beam or an inverted-T beam. In addition, since the flooring material 44 is filled with at least the same height as the upper beam 41 of the cross beam structure 31, the floor height from the floor surface to the ceiling finish is increased, and the lower beam 42 of the slab 43 is existing. Since the width of the upper beam is designed to be smaller than the T-beam of the lower floor, the ceiling finishing layer height of the lower floor is also reduced, resulting in a higher height of the lower floor.

As shown in Figures 3a and 3b, the present invention is integrally formed on the upper side of the lower beam 42 and the upper beam 41 and the lower beam 42 supported by the upper portion of the column and the action of the upper surface A bottom beam formed of a cross beam 31 consisting of a bottom slab 43 for supporting the loaded load together with the upper beam 41 and an upper surface of the bottom slab 43 on both sides of the upper beam 41 of the cross beam 31. (For example, an ondol or a floor) 44, and the height of the flooring material 44 has at least the same level as the height of the upper beam 41, so the protrusions of conventional T-beams in the floor and ceiling of the room It can be lower than the height.

Hereinafter, the beam structure of the soft skeleton structure using the cross-shaped beam according to the present invention will be described in detail with reference to FIG.

As shown in the figure, the beam structure 31 is the upper reinforcing bar is bent at both ends of the rectangular reinforcing bar 51 arranged at regular intervals by bending the rebar in a rectangular shape having a predetermined height and width (52) is woven and the half precast beam (50) forming the upper beam (41) of the floor slab 43 by placing concrete to have a predetermined thickness on the upper reinforcement (52) and the shear reinforcement (51) The slab reinforcement 54 woven in a predetermined mesh on both sides of the shear reinforcing bar 51 exposed to the half precast beam 50 is composed of a cross-shaped reinforcing bar assembly, wherein the slab reinforcement 54 and The half precast beams 50 are embedded in the pre-woven T-shaped formwork 61, respectively, and then cast concrete to form the floor slab 43 and the lower beams 42.

In addition, the cross beam has a plurality of connecting pipes 55 embedded in the middle of the upper beam 41 in the transverse direction.

The flooring material 44 is a flooring material such as the above-mentioned ondol, floor, and the like, and an upper floor beam and an electric pipe (not shown) installed therein are connected to the upper beam through a connection pipe 55 embedded in the upper beam 41. Both sides of the 41 are in communication with each other, and the upper surface level of the floor beam 44 is installed on the upper surface of the slab 43 on both sides of the upper beam 41 so as to match the upper surface level of the upper beam 41.

In the floor structure according to the present invention having the above-described configuration, the fixed load and the loading load of the floor slab 43 are primarily supported by the cross beam 31, and the load is carried out by the pillar and the base through the cross beam 31. Delivered.

A method of manufacturing a soft skeleton structure using a cross beam configured as described above will be described in detail with reference to FIGS. 4 and 5.

The flexible frame structure according to the present invention may be manufactured in the factory, such as half precast beam 50, and can be manufactured in the field by the simultaneous casting method of the beam and slab, and also in the present invention the column is the same as the existing method Is produced.

First, the upper reinforcing bar 52 bent at both sides is woven on the upper side of the shear bars 51 uniformly aligned with a predetermined height and width to form a rectangular reinforcing bar assembly, and a predetermined thickness on the upper side of the prosthetic bar assembly. The concrete is poured and cured so that the upper beam 41 having a half precast beam 50 is formed. This half precast beam 50 is first manufactured in the factory, etc. before the construction of the frame in the field.

At this time, when the shear reinforcing bar 51 and the upper reinforcing bar 52 according to the production of the half precast beam 50 reinforcement in the upper beam 41, a plurality of connection pipes 55 are embedded in the transverse direction.

In the field, the beam formwork 62 having a predetermined depth and the slab formwork 63 are formed on both sides of the beam formwork 62 so that the shear reinforcing bar 51 exposed to the half precast beam 50 is embedded. A T-shaped formwork 61 is produced. When the T-shaped formwork 61 is completed, the slab reinforcement 54 is woven with a predetermined mesh and embedded in the slab formwork 63, and the prefabricated half precast beam 50 is purchased in the formwork 62. do.

Finally, concrete is laid in the beam formwork 62 and the slab formwork 63 and cured to form a cruciform beam, and on the upper surface of both slabs of the cross beam, a flooring material 44 such as floor and underfloor is installed. . At this time, the slab reinforcement 54 is provided with a plumbing fixture 56, and connected to the connection pipe 55 embedded in the upper beam 41 to communicate with each other.

When the floor structure according to the present invention is applied to a variable apartment, by supporting the load acting on the floor slab of the apartment with columns and cross beams, the height of the floor material such as ondol compared to the frame structure of the conventional T-beams It can reduce the economic efficiency. In addition, since the internal and external walls become non-bearing structure, non-bearing and lightening of the apartment wall becomes possible. Accordingly, processes such as reinforcement of reinforcing bars, construction and demolition of formwork, and casting of concrete required for the structure of bearing walls This unnecessary savings in manpower and materials and shortening of air can be achieved.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

According to the present invention having the configuration as described above, by expanding the cross-sectional size of the beam to the upper side of the T-beams to structure the non-structure such as ondol has a rigidity and strength suitable for the design of large equilibrium and high-rise apartments, and the conventional T Since the height of the beam can be raised by the height of non-structural structures such as ondol, the height of the beam can be reduced.

In addition, it is possible to reduce the specific strength and light weight of the interior and exterior walls of the apartment, thereby improving the variability of the internal structure of the apartment, and there is an economic effect of reducing the manpower and materials due to the need for the bearing wall and reducing the air.

Claims (6)

A beam structure consisting of a beam having a predetermined height and width and a bottom slab extending in the longitudinal direction from both sides of the beam; And a bottom member filled with the bottom slab at a height equal to at least the height of the upper side beam protruding to the upper surface of the bottom slab of the beam structure. According to claim 1, The beam structure has a predetermined height and width and the upper reinforcing bar is bent on both sides of the upper reinforcement of the shear bar is installed to be aligned at a predetermined interval, the concrete to be embedded so that a portion of the upper reinforcement and the shear reinforcement is embedded A half precast beam which is poured to form an upper beam having a predetermined thickness; And cross-shaped reinforcing bar assemblies in which slab reinforcing bars woven in a predetermined mesh are arranged at both sides of the shear reinforcing bars. Structure. According to claim 1 or claim 2, Flexible frame using a cross-shaped beam further comprises a plurality of connection pipes embedded in the upper side of the beam structure, and a plumbing facility embedded in the flooring material so as to communicate with the connection pipes Structure. A beam structure consisting of a beam having a predetermined height and width and a bottom slab extending in the longitudinal direction from both sides of the beam; And a bottom member filled with the bottom slab at a height at least equal to the height of the upper side beam protruding to the upper surface of the bottom slab of the beam structure. A first step of weaving upper reinforcing bars bent at both sides on the upper side of the shear bars arranged so as to form a reinforcing bar assembly; A second step of casting and curing concrete to form a half precast beam so that an upper beam having a predetermined thickness is formed on an upper side of the reinforcing bar assembly; A third step of manufacturing a T-shaped formwork consisting of a beam formwork having a predetermined depth so that the shear rebar exposed to the half precast beam and a slab formwork formed on both sides of the beam formwork; A fourth step of weaving a slab reinforcement assembly into a predetermined mesh and embedding the slab formwork in the slab formwork and embedding a half precast beam in the formwork; And a fifth step of placing and curing concrete in the beam formwork and slab formwork to form a cross beam. 5. The method of claim 4, wherein the first step comprises embedding a plurality of connectors in the transverse direction in the reinforcing bar assembly; When the fourth step is to form a slab reinforcing bar assembly, the method of manufacturing a flexible skeleton structure further comprising the step of installing a plumbing equipment to communicate with the connecting pipe. The method according to claim 4 or 5, further comprising a sixth step of installing a flooring on the upper surface of both sides of the upper beam of the cross beam after performing the fifth step.