阅读说明：本技术 一种可拆支撑的装配式叠合楼板及其施工方法 (Detachable-support assembled composite floor slab and construction method thereof ) 是由 谭刚 刘亚东 马海英 赵辉 于 2019-11-18 设计创作，主要内容包括：本发明公开了一种可拆支撑的装配式叠合楼板及其施工方法,其中,可拆支撑的装配式叠合楼板包括：预制底板与设置在预制底板上的若干支墩,若干支墩设置在预制底板的同一端面上；至少两根钢棒,钢棒与对应的支墩远离所述预制底板的端面可拆卸连接；支撑杆,支撑杆与钢棒连接；预制底板内设有底部钢筋网,预制底板所在平面平行于底部钢筋网所在平面,及其施工方法。本发明的预制底板上安装了钢棒,并将钢棒与支撑杆连接,从而增大了结构的有效计算高度,进而提高了可拆支撑的装配式叠合楼板的抗弯刚度,避免可拆支撑的装配式叠合楼板的开裂,在施工过程中无需架设支撑构件,以达到减少施工措施量与装配成本的目的。(The invention discloses a detachable supported assembled composite floor slab and a construction method thereof, wherein the detachable supported assembled composite floor slab comprises: the prefabricated bottom plate and a plurality of buttresses arranged on the prefabricated bottom plate are arranged on the same end surface of the prefabricated bottom plate; the steel bars are detachably connected with the end surfaces, far away from the prefabricated bottom plate, of the corresponding buttresses; the supporting rod is connected with the steel bar; the prefabricated bottom plate is internally provided with a bottom reinforcing mesh, and the plane of the prefabricated bottom plate is parallel to the plane of the bottom reinforcing mesh. According to the invention, the steel bar is arranged on the prefabricated bottom plate and connected with the support rod, so that the effective calculation height of the structure is increased, the bending rigidity of the assembly type composite floor slab supported detachably is improved, the cracking of the assembly type composite floor slab supported detachably is avoided, and a support member is not required to be erected in the construction process, so that the purposes of reducing the construction measure amount and the assembly cost are achieved.)

1. A fabricated composite floor slab with detachable support, comprising:

the prefabricated bottom plate and a plurality of buttresses arranged on the prefabricated bottom plate are arranged on the same end surface of the prefabricated bottom plate;

the steel bars are detachably connected with the end surfaces, far away from the prefabricated bottom plate, of the corresponding buttresses;

the supporting rod is connected with the steel bar;

and a bottom reinforcing mesh is arranged in the prefabricated bottom plate, and the plane of the prefabricated bottom plate is parallel to the plane of the bottom reinforcing mesh.

2. The removably supportable, modular floor slab of claim 1, wherein:

the steel bar is detachably connected with the supporting rod.

3. The removably supportable, assembled, composite floor slab of claim 2, wherein:

the steel bar is connected with the support rod through a right-angle fastener.

4. The removably supportable, modular floor slab of claim 1, wherein:

the plurality of buttresses are arranged on the prefabricated bottom plate in a matrix manner, the plurality of buttresses are arranged in n rows and m columns, each buttress in each row is arranged along the length direction of the prefabricated bottom plate, and each buttress in each column is arranged along the width direction of the prefabricated bottom plate;

the steel bars are arranged in a one-to-one correspondence manner with the buttresses;

the bracing piece is n, every on every line the rod iron that the buttress corresponds all with same root the bracing piece is connected.

5. The removably supportable, modular floor slab of claim 1, wherein:

the buttresses are arranged at intervals.

6. The removably supportable, modular floor slab of claim 1, wherein:

the end face, far away from the prefabricated bottom plate, of the buttress is provided with a counter bore, and the steel bar is in threaded connection with the counter bore.

7. The removably supportable, modular floor slab of claim 1, wherein:

the support rod is a steel pipe internally filled with dense cement mortar.

8. A method of constructing a detachably supported modular floor slab as claimed in any one of claims 1 to 7, comprising the steps of:

s10: placing all the assembly type composite floor slabs which are detachably supported on the main beam or the supporting piece at the end part of the wall body in parallel;

s20: arranging pipelines between the buttresses;

s30: connecting the steel bar with the buttress, and then connecting the support bar with the corresponding steel bar;

s40: and pouring concrete to the designed elevation, and detaching the steel bar from the buttress after the strength of the cast-in-place concrete reaches 80% of the designed strength.

9. The removably supportable, assembled, composite floor slab of claim 8, wherein:

the end face, far away from the prefabricated bottom plate, of the buttress is provided with a counter bore, and the steel bar is in threaded connection with the counter bore;

step S50 is also included after step S40: and filling the counter bores on the buttresses with mortar or concrete.

Technical Field

The invention relates to the field of buildings, in particular to a detachable and supported assembled composite floor slab and a construction method thereof.

Background

The floor slab in the fabricated building mostly adopts the composite floor slab, and the composite floor slab has higher installation efficiency compared with a cast-in-place floor slab. However, the composite floor slab is a semi-finished product, and a scaffold needs to be erected on the site as a support member, so that the construction measure amount and the assembly cost are increased, and the construction period is longer.

The Chinese patent application CN201510202803.X discloses a composite floor slab and a construction method thereof, wherein a hoisting truss web member is adopted to hoist the composite floor slab to a required position, then a scaffold is additionally arranged below the composite floor slab to serve as a supporting member, then relevant members such as the hoisting truss web member are removed and poured, and relevant steps such as additionally arranging the supporting member are involved in the construction process, so that the construction steps and the assembly cost are increased.

Disclosure of Invention

The invention aims to provide a detachable and supported assembled composite floor slab and a construction method thereof, which reduce the construction measure amount and the assembly cost.

The technical scheme provided by the invention is as follows:

a removably supported, fabricated composite floor slab, comprising: the prefabricated bottom plate and a plurality of buttresses arranged on the prefabricated bottom plate are arranged on the same end surface of the prefabricated bottom plate; the steel bars are detachably connected with the end surfaces, far away from the prefabricated bottom plate, of the corresponding buttresses; the supporting rod is connected with the steel bar; and a bottom reinforcing mesh is arranged in the prefabricated bottom plate, and the plane of the prefabricated bottom plate is parallel to the plane of the bottom reinforcing mesh.

In the structure, because the assembled coincide floor of removable support is in the work progress, the rod iron has been installed on the prefabricated bottom plate, and be connected the rod iron with the bracing piece, thereby the effective calculation height of the assembled coincide floor of removable support has been increased, and then the bending rigidity of the assembled coincide floor of removable support has been improved, the deformation of the assembled coincide floor of removable support has been reduced, the fracture of the assembled coincide floor of removable support has been avoided, need not to erect supporting member in the work progress, thereby reach the purpose that reduces construction measure volume and assembly cost.

Preferably, the steel bar is detachably connected with the support rod.

Preferably, the steel bar is connected with the support rod through a right-angle fastener.

In the structure, the right-angle fastener is used for connecting the steel bar and the supporting rod, and the steel bar and the supporting rod can be conveniently mounted and dismounted.

Preferably, the buttresses are arranged on the prefabricated bottom plate in a matrix manner, the buttresses are arranged in n rows and m columns, each buttress in each row is arranged along the length direction of the prefabricated bottom plate, and each buttress in each column is arranged along the width direction of the prefabricated bottom plate; the steel bars are arranged in a one-to-one correspondence manner with the buttresses; the bracing piece is n, every on every line the rod iron that the buttress corresponds all with same root the bracing piece is connected.

Preferably, the buttresses are arranged at intervals.

Preferably, a counter bore is formed in the end face, far away from the prefabricated bottom plate, of the buttress, and the steel bar is in threaded connection with the counter bore.

Preferably, the support rod is a steel pipe internally filled with dense cement mortar.

In the structure, the bottom steel bar net in the buttress and the prefabricated bottom plate forms a truss type stress system so as to achieve the purpose of not needing a supporting member when pouring the detachable and supported assembled composite floor slab.

A construction method of the assembly type composite floor slab with the detachable support comprises the following steps: s10: placing all the assembly type composite floor slabs which are detachably supported on the main beam or the supporting piece at the end part of the wall body in parallel; s20: arranging pipelines between the buttresses; s30: connecting the steel bar with the buttress, and then connecting the support bar with the corresponding steel bar; s40: and pouring concrete to the designed elevation, and detaching the steel bar from the buttress after the strength of the cast-in-place concrete reaches 80% of the designed strength.

Preferably, a counter bore is formed in the end face, away from the prefabricated bottom plate, of the buttress, and the steel bar is in threaded connection with the counter bore; step S50 is also included after step S40: and filling the counter bores on the buttresses with mortar or concrete.

The detachable supported assembled composite floor slab and the construction method thereof provided by the invention can bring the following beneficial effects:

when the assembly type composite floor slab with the detachable support is actually constructed, the steel bars are increased by effective calculation height, so that the bending rigidity of the whole floor slab is improved, supporting members are omitted from erection in the construction process, and the purposes of reducing construction measure quantity and assembly cost are achieved.

Drawings

The above features, technical characteristics, advantages and realization of the detachably supported assembled composite floor slab and the construction method thereof will be further described in a clearly understandable way with reference to the accompanying drawings.

FIG. 1 is a perspective view of a removably supported modular floor slab;

FIG. 2 is a top plan view of a removably supported modular floor slab;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a partial enlarged view of the steel bar and the support rod;

fig. 6 is a partially enlarged view of the junction of the steel bar and the support rod.

The reference numbers illustrate:

1-prefabricated bottom plate, 2-bottom reinforcing mesh, 3-buttress, 4-steel bar, 5-support rod and 6-right-angle fastener.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product.

[ example 1 ]

As shown in fig. 1 to 4, example 1 discloses a specific implementation of a detachable supported fabricated composite floor slab, which includes: prefabricated bottom plate 1, 16 buttresses 3, 16 rod irons 4, 2 bracing pieces 5 of setting on prefabricated bottom plate 1, in this embodiment, bracing piece 5 is the steel pipe of the interior dense cement mortar of irritating.

As shown in fig. 1, 16 piers 3 are all arranged on the upper end surface of the prefabricated base plate 1, a bottom mesh reinforcement 2 is arranged in the prefabricated base plate 1, and the plane of the prefabricated base plate 1 is parallel to the plane of the bottom mesh reinforcement 2. And each buttress 3 is connected with a steel bar 4 in a threaded manner, and the steel bar 4 is connected with the end surface of the corresponding buttress 3 far away from the prefabricated bottom plate 1. Wherein, the bottom reinforcing mesh 2 can be made of common reinforcing steel bars, prestressed thread reinforcing steel bars, stress-relieving steel wires or steel strands and the like.

As shown in fig. 2, 16 buttresses 3 are arranged on prefabricated base plate 1 in a matrix, 16 buttresses 3 are arranged in 2 rows and 8 columns, the buttresses 3 are arranged at intervals, each buttress 3 on each row is arranged along the length direction (horizontal direction in fig. 2) of prefabricated base plate 1, and each buttress 3 on each column is arranged along the width direction (vertical direction in fig. 2) of prefabricated base plate 1. The steel bars 4 corresponding to 8 buttresses 3 on each row are connected with the same support rod 5.

Specifically, as shown in fig. 3 and 4, the connection form between the buttress 3 and the steel bar 4 is as follows: the middle position of the end face of the buttress 3, which is far away from the prefabricated bottom plate 1, is provided with a counter bore, and the steel bar 4 is in threaded connection with the counter bore on the corresponding buttress 3.

The embodiment also discloses a construction method of the detachable-support assembled composite floor slab, which comprises the following steps:

s10: and placing all the detachable supported assembled composite floor slabs on the main beam in parallel.

S20: between the piers 3, pipelines are arranged.

S30: the steel bar 4 is screwed into the counter bore on the buttress 3 so that the steel bar 4 is in threaded connection with the buttress 3, and then the support bar is connected with the corresponding steel bar 4.

S40: and pouring concrete to the designed elevation, wherein the height of the designed elevation is consistent with the height of the end face, far away from the prefabricated bottom plate 1, of the buttress 3, and after the strength of the cast-in-place concrete reaches 80% of the designed strength, the steel bar 4 is detached from the buttress 3.

[ example 2 ]

As shown in fig. 1 to 6, example 2 discloses another embodiment of a detachably supported fabricated composite floor slab, which includes:

the prefabricated bottom plate comprises a prefabricated bottom plate 1, 16 buttresses 3 arranged on the prefabricated bottom plate 1, 16 steel bars 4 and 2 support rods 5. In this embodiment, the support rod 5 is a steel pipe filled with dense cement mortar.

In other embodiments, the support rod 5 may also be a solid steel tube, which is not described herein.

As shown in fig. 1, 16 piers 3 are all arranged on the upper end surface of the prefabricated base plate 1, a bottom mesh reinforcement 2 is arranged in the prefabricated base plate 1, and the plane of the prefabricated base plate 1 is parallel to the plane of the bottom mesh reinforcement 2. And each buttress 3 is connected with a steel bar 4 in a threaded manner, and the steel bar 4 is connected with the end surface of the corresponding buttress 3 far away from the prefabricated bottom plate 1. Wherein, the bottom reinforcing mesh 2 can be made of common reinforcing steel bars, prestressed thread reinforcing steel bars, stress-relieving steel wires or steel strands and the like.

As shown in fig. 2, 16 buttresses 3 are arranged on prefabricated base plate 1 in a matrix, 16 buttresses 3 are arranged in 2 rows and 8 columns, the buttresses 3 are arranged at intervals, each buttress 3 on each row is arranged along the length direction (horizontal direction in fig. 2) of prefabricated base plate 1, and each buttress 3 on each column is arranged along the width direction (vertical direction in fig. 2) of prefabricated base plate 1. The corresponding rod iron 4 of 8 buttress 3 on every row all can be dismantled with same root bracing piece 5 and be connected, and is specific, as shown in fig. 5 and 6, rod iron 4 can be dismantled through right angle fastener 6 with bracing piece 5 and be connected.

Specifically, as shown in fig. 3 and 4, the connection form between the buttress 3 and the steel bar 4 is as follows: the middle position of the end face of the buttress 3, which is far away from the prefabricated bottom plate 1, is provided with a counter bore, and the steel bar 4 is in threaded connection with the counter bore on the corresponding buttress 3.

The embodiment also discloses another construction method of the assembly type composite floor slab with the detachable support, which comprises the following steps:

s10: and placing all the detachable supported assembled composite floor slabs on the main beam in parallel.

S20: between the piers 3, pipelines are arranged.

S30: and the steel bar 4 is screwed into the counter bore on the buttress 3, so that the steel bar 4 is in threaded connection with the buttress 3, and then the support bar is connected with the corresponding steel bar 4 through the right-angle fastener 6.

S40: and pouring concrete to the designed elevation, wherein the height of the designed elevation is consistent with the height of the end face, far away from the prefabricated bottom plate 1, of the buttress 3, and after the strength of the cast-in-place concrete reaches 80% of the designed strength, the steel bar 4 is detached from the buttress 3.

S40: and filling the counter bores on the buttresses 3 with mortar or concrete.

In other embodiments, the detachably supported fabricated composite floor slab may be placed on the supporting member at the end of the wall body, and the construction method is the same as that described above; the number of the piers 3 is not limited to the above example, and is determined according to actual conditions, and will not be described herein.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.