TWI689652B - Beam-slab structure and construction method - Google Patents

Abstract

A beam-slab structure and a construction method. The beam-slab structure includes a beam bottom support unit and a beam side forming unit. The beam bottom support unit includes at least one support frame, a base group, and a beam bottom template. The base set includes a base set on the support frame and two resisting pieces. The resisting members respectively extend upward from the base-side end of the base at intervals. The beam bottom template is arranged on the base of the base group, and is located between the resisting parts and spaced from the resisting parts. The beam side forming unit is detachably disposed on both sides of the beam bottom formwork and defines a beam forming space together with the beam bottom formwork.

Description

Beam-slab structure and construction method

The invention relates to a beam-slab structure and a construction method, in particular to a beam-slab structure that can improve building efficiency, and a construction method using the beam-slab structure.

At present, a method of constructing a building usually erected a plurality of upright columns at a base, and then erected an upwardly extending support frame between the columns of the base, and erected a truss above the support frame. After that, the beam bottom formwork and side plates are laid between adjacent columns, and the floor formwork is laid out in the area around the beam bottom formwork. During the construction process, personnel need to climb up the top of the support frame to erect the truss, lay the beam bottom formwork, beam side formwork, and floor formwork, which requires high-altitude operations and high personnel risk.

After the floor formwork is erected, the staff binds the steel bar and the floor formwork with steel bars and poured concrete slurry. After the concrete slurry solidifies to form the concrete floor slab and concrete main beam, the beam side formwork, floor formwork, truss and beam bottom formwork and support frame are removed.

After that, it is necessary to wait for the concrete main beam and the concrete floor slab to be cured (usually depending on the length of the concrete main beam, about 7 to 28 days), and then dismantle the support frame and the beam bottom formwork to become a scattered component, and then It was moved to the base where the next concrete floor slab and concrete main beam were to be constructed. However, in this way, before the construction of the next concrete floor slab and concrete beam, the support frame, beam bottom formwork, side plate and floor formwork must be re-erected in sequence. Repeating the steps of constructing the support frame and erecting the beam bottom formwork and floor formwork on it cause the problem of slow construction. Furthermore, when the area of the building to be constructed is large, the support frame and beam bottom formwork cannot be removed while waiting for the concrete slurry to solidify, which also results in a long waiting period during construction and cannot shorten the construction time of the building.

Therefore, the object of the present invention is to provide a beam-slab structure capable of overcoming at least one disadvantage of the prior art.

Therefore, the beam-slab structure of the present invention includes a beam bottom supporting unit and a beam side forming unit.

The beam bottom support unit includes at least one support frame, a base group, and a beam bottom template. The base set includes a base set on the support frame and two resisting pieces. The bears extend upward from the base-side end of the base at intervals. The beam bottom template is disposed on the base of the base group, and is located between the resisting pieces and spaced from the resisting pieces.

The beam side forming unit is detachably disposed on both sides of the beam bottom formwork and defines a beam forming space together with the beam bottom formwork.

Wherein, the beam side forming unit includes two spaced beam side formwork and two outer diagonal brace groups. Each beam side formwork can be detachably disposed on one of the long sides of the bottom formwork of the beam bottom formwork and spaced apart from the resisting pieces. The beam side formwork and the beam bottom formwork jointly define the beam forming space.

Each outer diagonal brace group includes multiple outer diagonal braces. Each outer diagonal brace of the outer diagonal brace group is disposed between one of the resisting members of the base group and one of the beam side templates adjacent to the resisting member, and includes a detachable abutment against the beam An outer vertical resisting piece of the side template facing the side of the resisting piece, and an outer diagonal resisting piece extending obliquely downward from the outer vertical resisting piece and abutting against the resisting piece.

Another object of the present invention is to provide a construction method capable of overcoming at least one disadvantage of the prior art.

Therefore, the construction method of the present invention is carried out in conjunction with the above-mentioned beam-slab structure, and includes: erection of four columns on a base, a predetermined main beam spacing between each two adjacent columns; a large number of rows between each two adjacent columns A beam bottom support unit, the beam bottom formwork of the beam bottom support units co-operate and extend from one of the uprights to the other upright; a beam side forming unit is provided on each of the beam bottom support units, every two phases The beam side formwork of the beam side forming units between adjacent uprights and the beam bottom formwork of the beam bottom support units together define a main beam forming space, the beam bottoms between the uprights and the adjacent uprights The beam bottom formwork of the support unit cooperates together to define a predetermined space of a floor slab; a plurality of upright floor formwork support members are provided on the resisting members of the base group of the beam bottom support units, and the floor formwork support members A floor formwork at a position corresponding to the predetermined space of the floor slab and the peripheral edge horizontally covering the top edge of the beam side formwork, the height of the floor formwork is higher than the height of the beam floor formwork of the beam bottom support unit; and on the floor formwork And the reinforcing spaces of the main beam forming spaces are bundled with a concrete slurry, and after the concrete slurry is cured, a concrete floor slab and a plurality of concrete main beams surrounding the concrete floor slab are formed.

The effect of the present invention is that through the modular beam-slab structure and the construction method of the present invention, personnel can reduce the time of working at height, and can quickly build the main beam forming space, and after the production of a concrete main beam, The beam-slab structure can also be quickly removed, and the entire beam-slab structure can be moved to another base where the main beam forming space is to be built, to continue to build the next main beam forming space.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

1 to 4, an embodiment of the beam-slab structure of the present invention includes a beam bottom support unit 1 and a beam side forming unit 2.

The beam bottom support unit 1 includes a plurality of support frames 11 stacked one above the other, a base group 12, and a beam bottom template 13. Each support frame 11 is composed of a plurality of support rods 111 connected to each other.

The base group 12 includes a base 121 disposed on the highest support frame 11 among the support frames 11, two receiving members 123, a plurality of metal beam members 124, and a plurality of connecting members 127. The base 121 includes a plurality of spaced cross bars 1210. The resisting members 123 extend upward from the ends of two opposite base sides 122 of the base 121 at intervals. The metal beams 124 are spaced apart from each other, and are respectively disposed between the support frame 11 and the base 121 and are perpendicular to the longitudinal direction of the base 121. The connecting members 127 respectively penetrate the cross bar 1210 of the base 121 and the corresponding resisting member 123. Specifically, the cross bar 1210 of the base 121 and the resisting parts 123 are both made of wood. Each connecting member 127 is a "D"-shaped screw, which connects the cross bar 1210 of the base 121 and its corresponding receiving member 123 in a screw-rotating manner, and protrudes from the bottom surface of the base 121. The metal beams 124 may be "C" shaped steel bars or "H" shaped steel bars.

The beam bottom template 13 is disposed on the base 121 of the base group 12 and is located between the resisting members 123 and spaced from the resisting members 123. The beam bottom template 13 has two long sides 131 of the bottom template extending in the same direction as the longitudinal direction of the base 121. In this specific example, the base group 12 further includes a frame 129 disposed on the base 121, and a plurality of wooden pads disposed between the beam bottom formwork 13 and the frame 129 and used to support the beam bottom formwork 13 Block 128 (also called "angle bar"), and the beam bottom template 13 is nailed with the wooden cushion block 128.

In this embodiment, the beam bottom support unit 1 further includes a plurality of height-adjusting members 14. Each height-adjusting member 14 is connected to the bottom end of the support frame 11 at the bottom, and jointly adjusts the height of the bottom support frame 11 to adjust the height and level of the beam bottom formwork 13 above it.

It is added that when the present invention is implemented, when the height of a single support frame 11 is sufficient for the beam bottom formwork 13 to reach the desired predetermined height, the number of the support frames 11 of the beam bottom support unit 1 may also be one, Therefore, the number of the support frames 11 of the present invention is at least one.

The beam side forming unit 2 is detachably disposed on the long sides 131 of the bottom forms of the beam bottom form 13, and defines a beam forming space 30 together with the beam bottom form 13.

In this embodiment, the beam side forming unit 2 includes two spaced beam side formwork 21, two outer diagonal brace groups 22, and two back brace group 23. Each beam side form 21 is detachably disposed on one of the long sides 131 of the bottom form 13 of the beam bottom form 13 and is spaced between the resisting members 123 at intervals. The beam side formwork 21 and the beam bottom formwork 13 jointly define the beam forming space 30.

Each outer diagonal brace group 22 includes a plurality of outer diagonal braces 221 arranged one behind the other, and the outer diagonal braces 221 are disposed on one of the receiving members 123 of the base group 12 and the beam side adjacent to the receiving members 123 Between templates 21. Each outer diagonal brace 221 includes an outer vertical resisting member 222 that detachably abuts the beam side form 21 toward the resisting member 123, and an obliquely downward extension from the outer vertical resisting member 222 The outer oblique abutment 223 against the abutment 123. In this embodiment, the outer vertical abutment 222 and the outer diagonal abutment 223 are connected by nailing.

Each back support member group 23 includes a plurality of back support members 231, the back support members 231 are fixedly connected between the outer vertical support members 222 of one of the outer diagonal support bracket groups 22 and the corresponding beam side formwork 21, and It extends in the same direction as the longitudinal direction of the beam side form 21. The aforementioned beam-side formwork 21 refers to the beam-side formwork 22 adjacent to the outer diagonal brace group 22. In this embodiment, the back support members 231 and the outer vertical contact members 222 connected thereto are connected in a nailing manner.

Referring to FIGS. 5 and 6, an embodiment of the construction method of the present invention is performed with the beam-slab structure, and several beam-slab structures are used in the implementation. The construction method of this embodiment includes the following steps.

First, four posts 51 are erected on a base 50. There is a predetermined main beam spacing (d1) between each two adjacent columns 51. In this embodiment, the base 50 includes a bundled reinforced mesh (not shown), and a concrete that solidifies and covers the reinforced mesh. Each column 51 includes a plurality of bundled steel bars (not shown), and a concrete that solidifies and covers the steel bars. In other forms, the base 50 can also be formed by the previous floor slab and its main beam, which is suitable for the construction of tall buildings.

Referring to FIG. 7, next, a plurality of beam bottom support units 1 are arranged between every two adjacent uprights 51. The beam bottom formwork 13 of the beam bottom supporting unit 1 cooperates with each other and extends from one of the uprights 51 to the other upright 51. More specifically, after the base group 12 of each beam bottom support unit 1 is assembled on the top of the support frame 11 and the beam bottom template 13 is fixedly arranged on the top of the base group 12, the support frame 11 is topped High and stack another set of support frames 11 below, continue to stack a plurality of said support frames 11 until the beam bottom formwork 13 reaches a predetermined height. After that, the height adjusting members 14 are installed on the bottom end of the bottom support frame 11 (see FIG. 4 ). The way in which the support frame 11 is raised can use a stacker or a crane, as long as the support 11 to be located at the highest and provided with the base group 12 and the beam bottom template 13 can be raised. Since the height and level of the height-adjusting members 14 can be adjusted to adjust the precise height and level of the beam bottom formwork 13, even if the base 50 is large and it is difficult to form a complete horizontal plane, as long as the height-adjusting members are adjusted At a height of 14, a plurality of beam bottom templates 13 disposed on the beam bottom support unit 1 above the base 50 can still be located at the same predetermined height level. In addition, in the process of stacking multiple support frames 11, the construction personnel are working on the ground, which is highly safe, and after adjusting the height of the beam bottom formwork 13, the beam bottom formwork 13 forms a height with sufficient top surface area The platform can be used by construction personnel to stand steadily and reduce the risk.

Referring to FIG. 8, again, the beam side forming unit 2 is provided on each beam bottom supporting unit 1. The beam-side formwork 21 of the beam-side forming unit 2 between every two adjacent uprights 51 and the beam-side formwork 13 of the beam-bottom supporting unit 1 together define a main beam forming space 31. In this embodiment, the four pillars 51 and the beam bottom formwork 13 between adjacent pillars 51 cooperate to define a predetermined floor slab space, that is, four main beam forming spaces 31 surround the floor Board reservation space. In actual implementation, the main beam forming space 31 and the predetermined space of the floor slab can be regarded as a building unit, and the building unit can be repeatedly constructed by sharing the adjacent main beam forming space 31, and in a predetermined building area Construct the beam bottom support unit 1 and beam side forming unit 2 of multiple building units.

Referring to FIGS. 8 to 11, to continue, a plurality of upright floor formwork support members 15 are provided on the resisting members 123 of the base group 12 of the beam bottom support units 1, and first on top of the floor formwork support members 15 A plurality of trusses 53 are placed, and a floor formwork 52 is disposed at a position corresponding to the predetermined space of the floor slab and the peripheral edge covers the top edge of the adjacent beam side formwork 21 horizontally. The height from the base 50 to the bottom surface of the floor formwork 52 is higher than the height from the base 50 to the bottom surface of the beam bottom formwork 13 of the beam bottom supporting units 1.

Referring to FIGS. 12 and 13, the floor formwork 52 and the main beam forming spaces 31 are then bundled with steel bars and poured with a concrete slurry. After the concrete slurry is cured, a concrete floor slab 61 and a plurality of concrete main beams 62 surrounding the concrete floor slab 61 are formed.

Referring to FIGS. 13 to 15, finally, the beam side forming units 2 are removed, the floor formwork 52 is removed, and the beam bottom support units 1 are removed. More specifically, the steps of removing the beam bottom support units 1 are performed after the steps of removing the beam side forming units and the floor formwork are removed, and include first removing several of the beam bottom support units 1. To reserve the remaining beam bottom support units 1, so that the concrete main beam between every two adjacent columns 51 is supported by the remaining beam bottom support unit 1, and after a predetermined time, it is removed The remaining beam bottom support unit 1.

Before removing each beam bottom support unit 1, the height-adjusting member 14 of the beam bottom support unit 1 (see FIG. 11) can be lowered to reduce the heights of the support frames 11 and the beam bottom formwork 13 so that The lowered beam bottom form 13 is separated from the concrete main beam 62 it supports.

In actual implementation, the time when the concrete slurry solidifies and hardens to form the concrete main beam 62 depends on the length of the main beam. Generally speaking, when the length of the concrete main beam 62 is less than 6 meters, it is necessary to wait for 14 days for the concrete slurry to solidify before removing the beam bottom formwork 13. When the length of the concrete main beam 62 is greater than 6 meters, it is necessary to wait for the concrete slurry to solidify for 21 to 28 days before removing the beam bottom formwork 13.

When using the construction method of the present invention to manufacture the concrete main beam 62 with a length greater than 6 meters, the above method can be used, after the main beam forming space 31 is filled with concrete slurry for 14 days and the concrete main beam 62 has been initially cured First, move away from all beam side forming units 2 and several beam bottom support units 1, so that each concrete main beam 62 is supported by at least one beam bottom support unit 1. After another 7 to 14 days, the concrete main beam 62 is completely cured and hardened, and then moved away from the remaining beam bottom support unit 1. By reserving part of the beam bottom support unit 1, the time for most of the beam bottom support unit 1 to be fixed at the same position until the concrete is completely hardened is shortened, and then only reserved while the concrete main beam 62 is completely cured and hardened Part of the beam bottom support unit 1 is in place.

At this time, while waiting for the concrete main beam 62 to be completely cured, the plurality of beam bottom support units 1 and the beam side forming units 2 that were removed first can be moved to the next base where the beam is to be built, and the construction continues The main girder and floor slab of a base can save the building time. Furthermore, moving the entire complete beam bottom support unit 1 at the same time can also reduce the manpower required to repeatedly build the beam bottom formwork at the predetermined position of the base.

7 to FIG. 13 and FIG. 15 to FIG. 16, in this embodiment, it also includes a pair of beam forming steps. The sub-beam forming step is to arrange a plurality of sub-beam bottom support units 7 between the two main beam forming spaces 31 before the two main beam forming spaces 31 are separated. The auxiliary beam bottom supporting units 7 cooperate to form a row intersecting the two main beam forming spaces 31 (see FIG. 9). Each secondary beam bottom support unit 7 includes at least one secondary support frame 71, a secondary base group 72, and a secondary beam bottom template 73. The sub-base group 72 includes a base 721 disposed on the sub-support frame 72, two sub-receiving members 723 extending upward from the base 721 at intervals, and a plurality of sub-floor formwork supporting members 727. The sub-beam bottom template 73 is disposed on the base 721 of the sub-base group 72 and is located between the sub-receiving pieces 723 and spaced from the sub-receiving pieces 723. The auxiliary floor form supporting members 727 extend upward from the auxiliary receiving members 723. In this embodiment, the number of sub-support frames 71 of each sub-beam bottom support unit 7 is plural, and each sub-beam bottom support unit 7 further includes a height-adjusting member 74 provided on the bottom sub-support frame 71.

Next, a secondary beam side forming unit 8 is placed on each secondary beam bottom support unit 7. Each secondary beam side forming unit 8 includes two secondary beam side form plates 81 and two secondary outer diagonal brace groups 82. Each secondary beam side form 81 is detachably connected to the secondary beam bottom form 73. Each sub-outer diagonal brace group 82 includes a plurality of sub-outer diagonal braces 821. The auxiliary outer diagonal brace 821 of each auxiliary outer diagonal brace group 82 is disposed between one of the secondary bearing members 723 of the secondary base group 72 and the secondary beam side form 81 adjacent to the secondary bearing member 723, and includes A secondary outer vertical abutment 822 detachably abutting against the secondary beam side form 81, and a secondary external oblique abutment extending downwardly from the secondary outer vertical abutment 822 against the secondary abutment 723 Pieces 823. The secondary beam side formwork 81 of the secondary beam side forming units 8 and the secondary beam bottom formwork 71 of the secondary beam bottom support units 7 together define a secondary beam forming space 32.

After that, the reinforcing beams are bundled in the auxiliary beam forming space 32 and the concrete slurry is poured. After the concrete slurry is cured, a concrete auxiliary beam 63 is formed. It should be noted that, in this specific example, the forming step of the auxiliary beam is synchronized with the setting step of the beam bottom support unit and the setting step of the beam side forming unit of the beam-slab structure.

In this embodiment, it also includes removing the auxiliary beam side forming units 8 and removing the auxiliary beam bottom support units 7. Specifically, removing the sub-beam bottom support units 7 is to first remove several of the sub-beam bottom support units 7 to reserve the remaining sub-beam bottom support units 7 so that each concrete sub-beam 63 It is supported by the remaining one sub-beam bottom support unit 7. After another predetermined time, the remaining sub-beam bottom support unit 7 is removed.

It should be noted that, according to the three-dimensional schematic diagram (FIG. 7 to FIG. 10 and FIG. 12) described above, the drawing of the height-adjusting members 14 of the beam bottom supporting units 1 and the height-adjusting members 74 of the sub-beam bottom supporting units 7 are omitted.

Referring to FIG. 17, it should be noted that, in another form, each beam bottom support unit 1 includes a plurality of support frames, and each support frame is a single tube support rod 17 (three in the figure) Single tube support rod as an example). Each sub-beam bottom support unit 7 includes multiple sub-support frames, and each sub-support frame is a height-adjustable single-tube support bar 75 (in the drawings, two single-tube support bars are used as examples).

In summary, the beam-slab structure of the present invention can be quickly erected between the two columns 51 of the base 50, and after grouting to form the concrete main beam 62, the entire beam bottom support unit 1 of the beam-slab structure can be moved to the desired It is very convenient to use another base for constructing beams. Furthermore, the construction method of the present invention can first detach part of the beam bottom support unit 1 and use another part of the beam bottom support unit 1 remaining under the concrete main beam 62 to continue to support the solidified concrete main beam 62 and lift The utilization rate of the beam bottom support unit 1 and the auxiliary beam bottom support unit 7 can shorten the time required to construct the whole building and shorten the construction period, that is, save the labor and time of repeatedly re-erection of the beam bottom formwork and support frame, so it can indeed be achieved The purpose of the invention.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as This invention covers the patent.

2: Beam bottom support unit

11: Support frame

111: support rod

12: base group

121: Base

1210: Crossbar

122: base side

123: Recipients

124: Metal beam

127: connector

128: wooden block

129: Frame

13: Beam bottom formwork

131: Long side of bottom template

14: height adjustment

15: Floor formwork support

17: Single tube support rod

2: Beam side forming unit

21: Beam side formwork

22: Outer diagonal brace group

221: External diagonal brace

222: Outer vertical abutment

223: Outer diagonal piece

23: Back support group

231: Back support

30: Beam forming space

31: Main beam forming space

32: Forming space of auxiliary beam

50: Base

51: Upright

52: Floor template

53: Yan frame

61: Concrete floor slab

62: Concrete main beam

63: Concrete auxiliary beam

7: auxiliary beam bottom support unit

71: auxiliary support

72: Sub-base group

721: Base

723: Deputy recipient

727: Floor formwork support

73: Vice beam bottom formwork

74: height adjustment

75: single tube support rod

8: auxiliary beam side support unit

81: Vice beam side formwork

82: Vice outer diagonal brace group

821: Vice outer diagonal brace

822: Vice outer vertical piece

823: Vice outer diagonal piece

d1: main beam spacing

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is an incomplete cross-sectional schematic diagram illustrating an embodiment of the beam-slab structure of the present invention; FIG. 2 is a schematic perspective view illustrating the embodiment; 3 is a schematic perspective view illustrating a beam bottom support unit of this embodiment; 4 is a schematic cross-sectional view illustrating several support frames of this embodiment; FIG. 5 is a flowchart illustrating an embodiment of the construction method of the present invention, and the construction method is performed with the beam-slab structure; 6 to 10 are schematic perspective views illustrating the process performed by the embodiment of the construction method; 11 is a schematic cross-sectional view illustrating an embodiment of the construction method to set up a floor formwork supporting member and a floor formwork; 12 is a schematic perspective view illustrating an example of the construction method of pouring a concrete slurry; 13 is a schematic cross-sectional view of FIG. 12 along XIII-XXIII; and 14 is a partial schematic front view illustrating that the embodiment of the construction method reserves the beam bottom support unit to support a concrete main beam; 15 is a schematic plan view illustrating that each main beam reserves one beam bottom support unit, and each sub beam reserves one sub beam bottom support unit; 16 is a schematic partial cross-sectional view illustrating that the embodiment of the construction method is provided with a pair of beam bottom supporting units and a pair of beam side forming units; and 17 is a partial cross-sectional schematic diagram illustrating another form of the beam bottom support unit and the auxiliary beam bottom support unit of the present invention.

1: Beam bottom support unit

11: Support frame

111: support rod

12: base group

121: Base

1210: Crossbar

122: base side

123: Recipients

124: Metal beam

127: connector

128: wooden block

129: Frame

13: Beam bottom formwork

131: Long side of bottom template

2: Beam side forming unit

21: Beam side formwork

22: Outer diagonal brace group

221: External diagonal brace

222: Outer vertical abutment

223: Outer diagonal piece

23: Back support group

231: Back support

30: Beam forming space

Claims (9)

A beam-slab structure includes: a beam bottom support unit, including at least one support frame, a base group, including a base disposed on the support frame, and two resisting pieces, the resisting pieces are spaced from the The end of the base side of the base extends upward, and a beam bottom template is provided on the base of the base group and is located between and spaced from the resisting parts; and a beam side forming unit, It is detachably provided on both sides of the beam bottom formwork and defines a beam forming space together with the beam bottom formwork. The beam side forming unit includes: two spaced beam side formwork, each beam side formwork is detachably provided on the beam The bottom formwork has a bottom formwork on the long side and is spaced from the resisting parts, the beam side formwork and the beam bottom formwork jointly define the beam forming space, two outer diagonal brace groups, each outer diagonal brace group includes A plurality of outer diagonal braces, the outer diagonal braces of the outer diagonal brace group are disposed between one of the bearing members of the base group and the beam side formwork adjacent to the bearing member, each outer diagonal brace It includes an outer vertical abutment that detachably abuts the beam side form toward the side of the abutment, and an outer oblique abutment that extends obliquely downward from the outer vertical abutment and abuts the abutment , And two back support member groups, each back support member group includes a plurality of back support members, the back support members are connected between the outer vertical support members of one of the outer diagonal support group and the corresponding beam side formwork And extend in the same direction as the longitudinal direction of the beam side formwork. The beam-slab structure according to claim 1, wherein the base group of the beam bottom support unit further includes a plurality of metal beams disposed between the support frame and the base and used to support the base. The beam-slab structure according to claim 1, wherein the beam bottom support unit includes a plurality of support frames stacked in sequence, and the beam bottom support unit further includes a plurality of height-adjusting members, the beam bottom support unit The base group is arranged on the highest support frame, and the height-adjusting members are respectively connected to the bottom end of the support frame at the bottom, and jointly adjust the height of the beam bottom formwork. The beam-slab structure according to claim 1, wherein the beam bottom support unit includes a plurality of the support frames, and each support frame is a single tube support bar. A construction method, which is carried out with the beam-slab structure as described in claim 1, and includes: erection of four columns on a base, a predetermined main beam spacing between every two adjacent columns; and every two adjacent columns A plurality of the beam bottom support units are arranged between the uprights, and the beam bottom formwork of the beam bottom support units co-operates and extends from one of the uprights to the other upright; one beam is provided on each beam bottom support unit Side forming unit, the beam side formwork of the beam side forming units and the beam bottom formwork of the beam bottom supporting units between every two adjacent uprights jointly define a main beam forming space, the uprights and the adjacent The beam bottom formwork between the columns together cooperate to define a predetermined space of a floor slab; a plurality of upright floor formwork support members are provided on the resisting members of the base group of the beam bottom support units, and the floor formwork The top of the support A floor formwork corresponding to the predetermined space of the floor slab and the peripheral edge covering the top edge of the beam side formwork horizontally, the height of the floor formwork is higher than the height of the beam bottom formwork of the beam bottom support unit; on the floor formwork and the Bundling steel bars in the forming space of the main beam and pouring a concrete slurry, after the concrete slurry solidifies to form a concrete floor slab, and a plurality of concrete main beams surrounding the concrete floor slab; and removing the beam side forming units, moving In addition to the floor formwork, and the beam bottom support units are removed, the steps of removing the beam bottom support units are performed after the steps of removing the beam side forming units and the floor formwork are removed, and include the first move Except for several of these beam bottom support units, to reserve the remaining beam bottom support units, so that the concrete main beam between each two adjacent columns is supported by at least one beam bottom support unit, after a predetermined time, then Remove the remaining beam bottom support unit. The construction method as described in claim 5, wherein the base group of each beam bottom support unit is assembled on the top of a support frame, and the beam bottom formwork is fixedly arranged on the top of the base group, and then the The support frame is high at the top and another set of support frames is stacked underneath. Continue to stack a plurality of support frames until the beam bottom template reaches a predetermined height, and then install a plurality of height-adjusting members at the bottom end of the bottom support frame And adjust the height adjustment parts to adjust the precise height and level of the beam bottom formwork. The construction method as described in claim 6, wherein, before removing the beam bottom support units, the height adjustment pieces are first lowered to reduce the height of the support frames and the beam bottom formwork, so that The low beam bottom formwork is separated from the concrete main beams. The construction method as described in claim 5 further includes a secondary beam forming step, the secondary beam forming step includes: arranging a plurality of the two primary beam forming spaces between the two primary beam forming spaces The sub-beam bottom support unit, the sub-beam bottom support units cooperate to form a row that intersects the two main beam forming spaces, and each of the sub-beam bottom support units includes at least one sub-frame and one pair A base set and a pair of beam bottom formwork, the sub-base set includes a base provided on the auxiliary support frame, two auxiliary receiving parts respectively extending upward from the base, and a plurality of auxiliary floor formwork supports , The auxiliary beam bottom formwork is set on the base of the auxiliary base set, and is located between and spaced apart from the auxiliary bearing parts, the auxiliary floor formwork support members are from the auxiliary bearing parts Extend upward; and place a secondary beam side forming unit on each secondary beam bottom support unit, each secondary beam side forming unit includes two secondary beam side formwork, and two secondary outer diagonal bracing groups, each secondary beam side The formwork is detachably connected to the sub-beam bottom formwork, each pair of outer diagonal bracing groups includes a plurality of auxiliary outer diagonal bracing groups, and the auxiliary outer diagonal bracing of each pair of outer diagonal bracing groups is disposed in the sub-base group Between a pair of resisting pieces and the secondary beam side formwork adjacent to the secondary resisting piece, and includes a secondary external vertical resisting piece detachably abutting against the secondary beam side formwork, and a secondary external vertical resisting piece The sub-outer slanting pieces extending obliquely downward to abut against the sub-receiving piece, the sub-beam side formwork of the sub-beam side forming units and the sub-beam bottom formwork of the sub-beam bottom supporting units jointly define a sub-beam Forming space, and then binding steel bars in the forming space of the auxiliary beam and pouring the concrete slurry, and forming a concrete auxiliary beam after the concrete slurry is cured. The construction method according to claim 8, wherein each beam bottom support unit includes a plurality of the support frames, each support frame is a single tube support bar, and each sub-beam bottom support unit includes a plurality of the sub-support frames Each support frame is a single pipe support rod.

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