阅读说明：本技术 一种法兰装置用于结构预留洞口施工方法 (Construction method of flange device for structure reserved hole ) 是由 侯春明 张萍 任志平 张兴志 杜福祥 戴超 武雄飞 赵云鹏 马靖华 刘旭冉 赵长 于 2019-09-28 设计创作，主要内容包括：本发明公开一种法兰装置用于结构预留洞口施工方法,主要是利用法兰装置以对预留洞口进行施工,施工过程中包括了测量定位、法兰装置安装以及使用等步骤。相比现有技术中的吊模,本案中的法兰装置利用法兰盖和法兰筒的结合直接起到了楼板结构的支撑作用,在后期对预留洞口进行封堵时,不需要再楼板下搭设任何操作平台,仅需要将法兰盖固定连接在法兰筒上并利用二次结构混凝土进行封闭即可,施工起来非常简单,相比吊模施工的成本非常更低。(The invention discloses a construction method of a flange device for a reserved hole of a structure, which is mainly used for constructing the reserved hole by utilizing the flange device, and comprises the steps of measuring and positioning, mounting and using the flange device and the like in the construction process. Compare the mould that hangs among the prior art, the flange device in the present case utilizes the combination of a flange lid and a flange section of thick bamboo to directly play floor structure's supporting role, when the later stage carries out the shutoff to the reservation entrance to a cave, need not set up any operation platform under the floor again, only need with flange lid fixed connection on a flange section of thick bamboo and utilize secondary structure concrete to seal can, it is very simple to construct, compares the cost of hanging the mould construction very much lower.)

1. A flange device is used for a construction method of a structure reserved hole, a super high-rise building comprises a floor slab with cast-in-place concrete (1) and a steel structure arranged on the floor slab, and the process of the construction of the floor slab comprises the steps of finishing the installation of a profiled steel sheet (7) required by the steel structure and finishing the binding of a steel bar (8) of the floor slab structure; the method is characterized in that: the method for reserving the hole in the structure of the floor slab comprises the following construction steps:

s1: after the profiled steel plates (7) are installed on the steel structure and the floor slab reinforcing steel bars (8) are bound, performing on-site measurement paying-off on the reserved holes on the plane of the floor slab to obtain the plane positions of all the reserved holes; selecting the specification of the flange device according to the structural thickness of the floor slab;

s2: the flange device in the S1 comprises a flange cylinder (4) and a flange cover (6); the flange cylinder (4) is of a hollow structure, and the upper end opening and the lower end of the flange cylinder (4) are both open; the flange cover (6) is fixedly connected with the upper end of the flange barrel (4) in a detachable connection mode; the flange cover (6) is connected with the flange cylinder (4) and then can seal the upper port of the flange cylinder (4);

s3: cutting a profiled steel sheet (7) and a reinforcing steel bar (8) of the floor slab structure at the reserved hole to finish the installation of the flange cylinder (4); the upper end surface of the flange cylinder (4) is lower than the structural elevation of the upper plate surface of the floor slab, and the lower port of the flange cylinder (4) exceeds or is flush with the structural elevation of the lower plate surface of the floor slab;

s4: arranging side templates (10) along the radial direction of the flange cylinder (4), arranging a horizontal bottom template (9) at the bottom of each side template (10), fixing the side templates (10) and the bottom template (9), and sealing the side templates (10) and the bottom template (9) in a combined manner to form a cavity (3) for secondary casting of concrete (1); the side surface and the bottom of the cavity (3) are closed, and the flange cover (6) can freely enter and exit above the cavity (3); pouring the floor slab concrete (1) for the first time, wherein the concrete (1) is not poured in the cavity (3);

s5: after the floor concrete (1) is poured for the first time, the hoisting operation can be carried out through the reserved hole, after the hoisting operation is finished, the side formwork (10) and the bottom formwork (9) are detached, the concrete (1) is poured into the cavity (3), and the flange device concrete (1) is poured for the second time.

2. The method for constructing the reserved hole of the structure by using the flange device according to claim 1, wherein the method comprises the following steps: and in the step S4, the structural elevation of the bottom template (9) from the lower plate surface of the floor slab is 50mm to 80 mm.

3. The method for constructing the reserved hole of the structure by using the flange device as claimed in claim 2, wherein the method comprises the following steps: a stop block (5) is welded on the outer wall of the flange barrel (4) in the construction step S2, and the bottom formwork (9) is supported by the stop block (5) in the construction step S4.

4. A method for constructing a structural reserved hole by using a flange device according to claim 3, wherein the method comprises the following steps: the structure elevation of face under dog (5) apart from the floor 50mm to 80 mm.

5. A method for constructing a reserved hole of a structure by using a flange device according to any one of claims 1 to 4, wherein the method comprises the following steps: in the construction step S4, when the floor concrete (1) is first poured, the upper end of the flange tube (4) is closed by the flange cover (6).

6. A method for constructing a reserved hole of a structure by using a flange device according to any one of claims 1 to 5, wherein the method comprises the following steps: in the construction step S2, the flange cover (6) is bolted to the flange cylinder (4), and nuts (2) of the bolts are tack-welded to the flange cylinder (4) in advance before the construction step S5.

Technical Field

The invention belongs to the technical field of super high-rise building construction, and particularly relates to a construction method of a flange device for a structure reserved hole.

Background

With the development of modern economy and the continuous progress of building science and technology, the sight bridge corridor designed among super high-rise buildings continuously emerges, and the bottom of the corridor is mostly provided with a light high-strength aluminum plate curtain wall system. Limited by construction technology, the aluminum plate curtain wall system needs to reserve an opening (the diameter of the reserved opening is 165mm generally) in the corridor floor structure for hoisting and lifting the aluminum plate curtain wall. And the reserved hole needs to be sealed after the hoisting is finished.

Disclosure of Invention

The invention aims to provide a construction method for a flange device used for a structure reserved hole, which achieves the purposes of simple construction, finishing the later stage sealing of the reserved hole without erecting a supporting scaffold, reducing the construction difficulty and saving the construction cost by changing the construction process and applying the flange device to the construction of a super high-rise building.

The technical scheme of the invention is as follows: a flange device is used for a construction method of a structure reserved hole, a super high-rise building comprises a floor slab with cast-in-place concrete and a steel structure arranged on the floor slab, and the structural construction process of the floor slab comprises the steps of completing the installation of profiled steel plates required by the steel structure and completing the reinforcement binding of the floor slab structure; reserving the hole in the structure of the floor slab comprises the following construction steps:

s1: after the installation of the profiled steel sheet of the steel structure and the binding of the reinforcing steel bars of the floor slab are finished, carrying out on-site measurement and paying-off on the reserved holes on the plane of the floor slab to obtain the plane positions of all the reserved holes; selecting the specification of the flange device according to the structural thickness of the floor slab;

s2: the flange device in the S1 comprises a flange cylinder and a flange cover; the flange cylinder is of a hollow structure, and the upper end opening and the lower two ends of the flange cylinder are both open; the flange cover is fixedly connected with the upper end of the flange barrel in a detachable connection mode; the flange cover is connected with the flange cylinder and then can seal the upper port of the flange cylinder;

s3: cutting a profiled steel sheet and a steel bar of the floor slab structure at the reserved hole to finish the installation of the flange cylinder; the upper end surface of the flange cylinder is lower than the structural elevation of the upper plate surface of the floor slab, and the lower port of the flange cylinder exceeds or is flush with the structural elevation of the lower plate surface of the floor slab;

s4: arranging a side template along the radial direction of the flange cylinder, arranging a horizontal bottom template at the bottom of the side template, fixing the side template and the bottom template, and combining and sealing the side template and the bottom template to form a cavity for secondary concrete pouring; the side surface and the bottom of the cavity are closed, and the flange cover can freely enter and exit above the cavity; pouring the floor slab concrete for the first time, wherein concrete is not poured in the cavity at the moment;

s5: after the floor concrete is poured for the first time, the hoisting operation can be carried out through the reserved hole, after the hoisting operation is finished, the side templates and the bottom template are detached, the concrete is poured into the cavity, and the concrete of the flange device is poured for the second time.

Further: and in the step S4, the structural elevation of the bottom template away from the lower plate surface of the floor slab is 50mm to 80 mm.

Further: and in the construction step S2, a stopper is welded on the outer wall of the flange barrel, and in the construction step S4, the bottom formwork is supported by the stopper.

Further: the structure elevation of face under the dog distance floor 50mm to 80 mm.

Further: in the construction step S4, when the floor slab concrete is cast for the first time, the upper port of the flange cylinder is closed by the flange cover.

Further: the flange cover is bolted to the flange cylinder in the construction step S2, and nuts of the bolts are tack-welded to the flange cylinder in advance before the construction step S5.

The beneficial effect of this scheme: the invention provides a construction method for a structure reserved hole by using a flange device. Compare the mould that hangs among the prior art, the flange device in the present case utilizes the combination of a flange lid and a flange section of thick bamboo to directly play floor structure's supporting role, when the later stage carries out the shutoff to the reservation entrance to a cave, need not set up any operation platform under the floor again, only need with flange lid fixed connection on a flange section of thick bamboo and utilize secondary structure concrete to seal can, it is very simple to construct, compares the cost of hanging the mould construction very much lower. Moreover, the flange cover and the flange barrel can be sealed by the rubber pad after being connected, so that the flange device in the scheme also has a good waterproof effect, and the later-stage seam repair construction hole in the scheme also can have a good waterproof effect.

Drawings

FIG. 1 is a schematic view of a flange cylinder mounting structure according to the present invention;

FIG. 2 is a schematic view of a mounting structure of the flange cover according to the present invention;

figure 3 is a schematic plan view of the flange apparatus of the present invention installed in a floor structure.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1, fig. 2 and fig. 3, the construction method of the flange device for the structure reserved hole disclosed by the invention specifically comprises the following construction steps, and the construction method is described by taking a floor slab with the thickness of 120mm as an example:

s1: after the installation of the profiled steel sheet 7 of the steel structure and the binding of the floor slab reinforcing steel bars 8 are finished, performing on-site measurement and paying-off on the reserved holes on the plane of the floor slab to obtain the plane positions of all the reserved holes;

s2, selecting the specification of the flange device according to the thickness of the floor slab structure;

the structure of the flange in the scheme is shown in figure 2: the flange device comprises a flange cylinder 4 and a flange cover 6, the flange cylinder 4 is of a hollow structure, and an upper end opening and a lower end opening of the flange cylinder 4 are both open; the flange cover 6 and the flange barrel 4 are coaxially arranged, the flange cover 6 is fixedly connected with the upper end of the flange barrel 4 in a detachable connection mode, and meanwhile the flange cover 6 seals the upper end opening of the flange barrel 4.

The cross section of the flange cylinder 4 can be circular, triangular or even polygonal; in the implementation process, the flange cylinder 4 is only a steel wire rope which is hollow and can be hoisted, and the specific shape of the cross section of the flange cylinder 4 is not limited in the scheme.

In the scheme, as shown in fig. 2 and 3, the flange cylinder 4 and the flange cover 6 are connected by bolts, and a rubber pad is additionally arranged between the flange cylinder 4 and the flange cover 6 to perform complete sealing; for the selection of the flange specification, the size of the cross section of the flange cylinder 4 is selected according to the construction requirements of hoisting the aluminum plate curtain wall; in the scheme, a flange cylinder 4 with a cylinder body length of 120mm and a flange cover 6 with a thickness of 20mm are selected, and after the flange cylinder 4 and the flange cover 6 are fixedly and hermetically connected, the flange device is 140mm thick plus a rubber pad along the axial length of the flange cylinder 4; in practice, the thickness of the rubber pad can be generally considered to be within 5 mm; a hexagon bolt with the diameter of 12mm and an M12 nut 2 are selected in the scheme.

S3: cutting a profiled steel sheet 7 and a reinforcing steel bar 8 at a reserved hole to finish the installation of the flange cylinder 4, wherein the upper end face of the flange cylinder 4 is required to be lower than the structural elevation of the upper plate surface of the floor slab, and the lower end opening of the flange cylinder 4 is beyond or flush with the structural elevation of the lower plate surface of the floor slab; the outer wall of the flange cylinder 4 is welded and fixed with the profiled steel sheet 7, and the welding seam of the flange cylinder 4 and the profiled steel sheet 7 is sealed, and structural glue or full weld can be adopted for sealing and sealing so as to prevent slurry leakage in the later concrete pouring 1 process; the steel bars 8 can be separated from, abutted against or fixedly connected with the outer wall of the flange cylinder 4, and except for special conditions, the steel bars 8 generally cannot penetrate through the side wall of the flange cylinder 4;

s4: in order to facilitate formwork erecting and shaping of the primary concrete 1, in the optimized embodiment, a welding stop block 5 is additionally arranged on the outer wall of the flange cylinder 4; as shown in fig. 1, the position of the stopper 5 in the axial direction of the flange cylinder 4 is set as required by the height of the first cast concrete 1. In the present case, adopt twice to pour and install the flange device. The floor concrete 1 is poured for the first time, and the flange device concrete 1 is poured for the second time.

The first pouring process of the floor concrete 1: a side template 10 is arranged along the radial direction of the flange cylinder 4, and a horizontal bottom template 9 is arranged at the bottom of the side template 10; the bottom template 9 is supported by the stop blocks 5, and the bottom template 9 can also be supported by additionally arranging support irons on the steel bars 8 or the profiled steel sheets 7. The bottom template 9 is supported by the stop block 5; the side templates 10 and the bottom template 9 form a cavity 3 for secondary pouring of concrete 1, the side surface and the bottom of the cavity 3 are closed, and the flange cover 6 can freely enter and exit above the cavity 3; the distance between the bottom template 9 and the floor bottom elevation is reserved for 50mm to 80mm, and the distance between the bottom template 9 and the floor bottom elevation is reserved for 50mm in the optimized embodiment; after the steps are completed, the floor slab concrete 1 is poured for the first time;

it should be noted that: when the floor slab concrete 1 is poured for the first time, a flange cover 6 can be arranged on the flange barrel 4 to prevent the concrete 1 from entering the flange barrel 4;

after the floor slab concrete 1 is poured for the first time, the side templates 10 and the bottom template 9 are removed, and the flange cover 6 is fixedly and hermetically arranged at the upper end of the flange barrel 4 through bolts and rubber pads; after the flange cover 6 is installed, the upper disc surface of the flange cover 6 is required to be lower than the structural elevation of the upper disc surface of the floor slab; and after the flange cover 6 is installed, pouring concrete 1 into the cavity 3, and pouring the concrete 1 of the flange device for the second time.

In the scheme, the time period from the first pouring of the concrete 1 of the floor slab to the second pouring of the concrete 1 of the flange device is the time period for hoisting the aluminum plate curtain wall, and after the second pouring of the concrete 1 of the flange device is completed, the flange device is permanently embedded in the floor slab and is not detached any more. Of course, if other construction requirements exist in the later period, the concrete 1 on the flange cover 6 can be chiseled to open the flange device, and the flange device can be utilized according to the requirements.

The above description is only exemplary of the present invention and should not be taken as limiting, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.