Inflatable isolation construction method at beam-column joint

Abstract

The application relates to the technical field of building construction, in particular to an inflatable isolation construction method at a beam-column joint, which utilizes a flexible sealing bag as the body of an isolation unit, so that after the column steel bars and the beam steel bars are bound, the body can be quickly installed at the isolation part position, the body can be extended into the beam bottom, the close sealing effect with the beam bottom is improved, the gas is filled into the inflation port, the flexible sealing bag is filled and compacted under the action of the gas and the flexibility of the flexible sealing bag itself, the gap formed between the steel bars and the formwork is filled and compacted, the isolation effect is improved, meanwhile, the installation difficulty of the isolation device is reduced, and the installation construction period of the isolation device is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to an inflatable isolation construction method for beam-column joints. Background Art

[0002] Beams and columns are the main force-transmitting components in the main structure of a house. To ensure the force transmission effect and safety of the force-transmitting components, designers usually require the use of concrete of different strengths at the beam and column positions to achieve the design concept of strong columns and weak beams. Therefore, during the construction of beam and column concrete pouring, the beam-column nodes need to be isolated, otherwise a large amount of concrete used for the columns will enter the beams.

[0003] At present, when constructing concrete of different strengths at beam-column joints, the reinforcement cages of beams and columns are tied before pouring the beams and columns, and then installed after tying the cages. At the same time, the reinforcement of the slab where the beams are located is also tied together. Figure 1 After the reinforcement and cage are tied, concrete will be poured, and finally the Figure 2 The beam-column structure shown in the figure. Due to the need to meet the strong column and weak beam design concept, the beam-column node position will be, for example: Figure 2 and Figure 3 As shown, before pouring concrete, isolation measures are taken for the beam-column joints where reinforcement bars, cages and placement have been completed, so as to save the consumption of high-strength concrete and meet construction requirements.

[0004] To this end, a large number of designs for concrete isolation devices of different strengths at beam-column joints and construction methods for concrete isolation of different strengths at beam-column joints have appeared in the prior art. For example: the concrete casting and molding isolation device of different strength grades at beam-column joints with patent application number 202010751951.8 includes a plurality of long strip isolation steel plates, a plurality of long strip dense steel wire brushes, a circular support rod and two gear sleeves; each long strip dense steel wire brush is fixed on the front end surface of the long strip isolation steel plate; a circular support rod through-hole is opened at the upper end of each long strip isolation steel plate, which is passed through the circular support rod through the through-hole and can rotate and slide along the circular support rod, but is relatively tightly assembled. The two ends of the circular support rod are respectively fixed in the two gear sleeves, which makes installation and disassembly convenient, can be recycled and reused, and effectively controls the flow of concrete of different strength grades.

[0005] Another example: The beam-column node concrete casting separator with patent number 202020178066.0 includes a separator body, and the separator body includes a steel base plate. Two clamping components are arranged in parallel on the steel base plate, and multiple sleeves arranged in parallel are installed between the two clamping components. The two ends of each sleeve are respectively placed in the two clamping components, and each sleeve is limited between the two clamping components. Multiple sealing rods for forming a dividing interface between concretes of different strengths at the beam-column node position are inserted in the separator body, and each sealing rod is passed through a corresponding sleeve in the two clamping components and is pressed and positioned by the two clamping components to prevent the concrete from flowing.

[0006] Another example: Patent No. 202121431658.X discloses an isolation device for pouring concrete of different strengths at the beam-column joint, which is composed of a clamping strip, a pad and a spacer between the clamping strip and the pad. A rotating handle is provided on the top of the spacer, and the spacer is composed of a partition column and a partition plate, and the partition plate is fixedly connected to the partition column; the bottom end of the partition column can be inserted into the pad and can rotate freely; it is convenient to disassemble and remove for reuse after the concrete pouring is completed, which improves convenience; the top end of the partition column can pass through the clamping strip, and the partition column and the clamping strip are locked and fixed to each other, so that during the concrete pouring process, the partition plate is not easy to flip over, which improves stability, and the pad structure is used at the bottom to avoid the partition columns swinging against each other, affecting the isolation effect; the device has a simple structure and is easy to use.

[0007] It can be seen that the above-mentioned isolation devices all have something in common, that is, they are all designed with partitions or strips, which makes it difficult to install them after the reinforcement and cage are tied; and the sealing after installation is not good, which still easily causes high-strength concrete at the beam-column node to slip into the beam template groove. Summary of the Invention

[0008] In order to solve the above technical problems existing in the prior art, the present invention provides an inflatable isolation construction method at beam-column nodes.

[0009] This is achieved specifically through the following technical solutions:

[0010] One of the purposes of the present invention is to provide a method for constructing an inflatable isolation structure at a beam-column joint, comprising the following steps:

[0011] S1: Tie the column reinforcement to the upper surface of the slab;

[0012] S2: Erect column formwork and scaffolding to the lower level of beams and slabs;

[0013] S3: Set up beam formwork, slab formwork and scaffolding, and tie beam reinforcement and slab reinforcement;

[0014] S4: An isolation portion is established at the beam-column joint position, and an inflatable isolation device is installed at the isolation portion; after the installation is completed, the main body is inflated using the inflatable device until the bottom and side edges of the main body are in close contact with the beam formwork, and then sealed using a sealing cover;

[0015] S5: pouring column concrete and vibrating it to make it dense; when the column concrete is initially set, opening the sealing cover to make the body shrink, taking out the body, and then pouring beam concrete and vibrating it to make it dense.

[0016] The inflatable isolation device is composed of several isolation units, each of which includes a main body, which is a flexible sealing bag and can be formed into a cylindrical shape after gas is blown into it; an inflation port is integrally formed at the top of the main body, and a sealing cover is provided on the inflation port.

[0017] This method uses a flexible sealing bag as the main body of the isolation unit, so that after the column reinforcement and beam reinforcement are tied, the main body can be quickly installed at the isolation position, so that the main body can be extended to the bottom of the beam, improving the sealing effect with the bottom of the beam, and then using the inflation port to blow gas into the flexible sealing bag. Under the action of gas and the flexibility of the flexible sealing bag itself, the gap between the steel bar and the formwork is filled tightly, thereby improving the isolation effect. At the same time, the difficulty of installing the isolation device is reduced and the installation construction period of the isolation device is shortened.

[0018] In the invention, a flexible sealing bag is used to make the body, so that the body is in a soft state before use. When it is used to isolate concrete of different strengths at the beam-column joint, it is more convenient to extend the bottom of the body into the bottom of the beam, so as to be close to the beam formwork and improve the bottom sealing. It can also reduce the difficulty of installing the isolation device. After the installation is completed, air is blown into the body through the inflation port using an inflation device to inflate the body, and through the extrusion of the gas, the body can cover the gap between the beam reinforcement and the formwork to improve the density. After the inflation is completed, it is sealed with a sealing cover to effectively prevent air leakage and reduce the sealing of the isolation.

[0019] The flexible sealing bag used in the present invention can be made of, but is not limited to, polyethylene, polystyrene and other materials.

[0020] In order to facilitate the installation of isolation units between beam reinforcements and ensure the height isolation requirements when pouring column concrete, it is preferred that the diameter of the flexible sealing bag is 1-4 cm, and the difference between the length of the flexible sealing bag and the height of the beam is ≥5 cm.

[0021] In order to improve the density and stability of the connection between the isolation units and ensure that they form a whole before inflation, preferably, a hook is provided on the left side of the body and a buckle is provided on the right side of the body; the hook can be inserted into the buckle.

[0022] In order to enable all isolation units installed at the same isolation position to be inflated simultaneously, thereby reducing the difficulty of the inflation process and improving construction efficiency, it is preferred that a connecting portion is provided on the top of the main body. The connecting portion is used to connect two adjacent isolation units, and the connecting portion can be matched with the inflation port for communication.

[0023] In order to enhance air tightness, preferably, a sealing cover is provided on the connecting portion.

[0024] To enhance the installation of the isolation unit on the beam reinforcement and ensure stable installation of the isolation unit bottom, preferably, the bottom of the main body is provided with a stabilizing ball, and the stabilizing ball is made of a flexible sealed bag. The isolation device also includes a backing plate for mounting the isolation unit, the backing plate having a stabilizing hole matching the stabilizing ball, into which the stabilizing ball can fall. More preferably, the backing plate is cast from concrete.

[0025] In order to facilitate the stable installation of the stabilizing ball and to achieve the purpose of filling the stabilizing hole as the inflation port is inflated, thereby making the bottom of the body and the pad tightly connected, preferably, the stabilizing ball includes a ball portion and a connecting tube, and the connecting tube is integrally formed and connected between the bottom of the body and the ball portion, and the connecting tube connects the body with the interior of the ball portion. More preferably, a booster ball is provided in the ball portion, and the booster ball can freely fall into the stabilizing hole. More preferably, the stabilizing hole includes an orifice and a hole bottom, and the diameter of the orifice is less than the diameter of the hole bottom; the orifice can allow the ball portion and the booster ball to fall freely.

[0026] Preferably, the hole bottom is a cube.

[0027] Compared with the prior art, the technical effects created by the present invention are embodied in:

[0028] The invention has a simple structure and low production cost, and the flexible sealing bag used can be used after being inflated and deflated, which improves the construction efficiency of the isolation treatment of the beam-column node and reduces the construction cost of the isolation treatment. The gap formed between the beam reinforcement and the template can be squeezed and filled densely under the action of the inflation of the flexible sealing bag, thereby improving the isolation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the reinforcement binding structure of the beam-column node.

[0030] Figure 2This is a schematic diagram of the overhead structure of pouring concrete slabs at beam-column joints.

[0031] Figure 3 for Figure 2 Schematic diagram of the cross-section structure with columns as the multi-axis.

[0032] Figure 4 The present invention provides a schematic structural diagram of an inflatable isolation device.

[0033] Figure 5 for Figure 4 Installation structure diagram.

[0034] Figure 6 for Figure 5 Schematic diagram of the inflatable balloon installation structure.

[0035] Figure 7 for Figure 4 Another structural diagram of an embodiment.

[0036] Figure 8 for Figure 7 Installation structure diagram.

[0037] Figure 9 for Figure 7 Another structural diagram of an embodiment.

[0038] Figure 10 Schematic diagram of the top view of the pad structure.

[0039] Figure 11 Schematic diagram of the cross-sectional structure of the pad.

[0040] Figure 12 for Figure 7 Schematic diagram of partial cross-section structure.

[0041] Figure 13 Create a process flow chart for this invention.

[0042] Figure 14 Apply photos for on-site construction.

[0043] 1-column 2-beam 3-plate surface 4-isolator 5-body 6-inflating port 7-sealing cover 8-rebar ring 9-beam main reinforcement 10-formwork 11-gap 12-pad 13-stabilizing ball 14-connecting part 15-stabilizing hole 13.1-connecting pipe 13.2-ball part 13.3-boosting ball 15.1-hole opening 15.2-hole bottom. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is further defined below in conjunction with the accompanying drawings and specific implementation methods, but the scope of protection required is not limited to the description.

[0045] like Figure 1As shown, during the construction process of beam 2 and column 1, the column reinforcement and beam reinforcement are usually tied after the formwork is completed, and then the concrete is poured to form the following Figure 2 and Figure 3 The concrete slab 3 structure shown in the figure; when pouring beams 2 and columns 1, it is usually necessary to use concrete of different strengths to achieve the construction design concept of strong columns and weak beams. Therefore, during the construction of beam-column concrete pouring, it is inevitable to face the problem of determining the position of the concrete node between the beam and the column, and then forming the beam-column node position. However, how to ensure that the beam-column node position is in a reasonable position to reduce the loss of high-strength concrete and reduce costs has become a focus of research by those skilled in the art. At present, the technical problem is to use isolation measures for isolation treatment, such as Figure 2 and Figure 3 As shown, the above purpose can be achieved by determining the beam-column node and forming an isolation part 4, and installing an isolation device at the position of the isolation part 4.

[0046] However, most existing isolation devices use plate-like structures, making them difficult to install within the beam reinforcement cage. Furthermore, they fail to provide a sealed barrier between the beam reinforcement and the formwork 10, resulting in a large amount of high-strength concrete flowing into the beam formwork, causing waste. Other methods employ multiple strip-like structures arranged in parallel, such as inserting steel bars. However, due to the poor sealing between the excessive number of steel bars, the sealing effect remains unsatisfactory.

[0047] In view of the many technical problems existing in the existing technology, the researchers combined long-term construction practice to introduce a flexible structure at the isolation position to prepare it, so that the flexible structure can not only meet the requirements of the gap between the extrusion deformation and sealing beam reinforcement and the formwork, but also reduce the difficulty of the isolation device installation and construction, and can also ensure the isolation requirements. Specifically: Figure 4 As shown, the inflatable isolation device is composed of a number of isolation units, each of which includes a main body 5, which is a flexible sealing bag and can form a cylindrical shape after gas is blown into it; an inflation port 6 is integrally formed at the top of the main body 5, and a sealing cover 7 is provided on the inflation port 6.

[0048] When in use, determine the position of the beam-column node and use it as the isolation part 4. Then, insert the bottom of the body 5 of the isolation unit through the gap between the beam reinforcement to the bottom of the beam, and press it tightly against the template 10 at the bottom of the beam. Install several bodies 5 side by side in the beam continuously. Figure 5 As shown, a gap 11 is formed between the body 5 and the template 10. Figure 6As shown, there are also many gaps 11 between the main bodies 5. After several main bodies 5 are installed side by side, the sealing cover 7 is opened and the inflation device is aligned with the inflation port 6 to inflate it. When it is inflated until it no longer expands, the inflation device is pulled out and the sealing cover 7 is used to seal it. The operation is repeated in sequence until all the main bodies 5 installed side by side are inflated, forming a complete isolation device for concrete of different strengths at the beam-column joint. Figure 5 and Figure 6 As shown, when the main body 5 is installed, its bottom is close to the beam reinforcement ring 8 away from the column, and the side near the top is also close to the reinforcement ring 8, and then under the action of the reinforcement ring 8 and the main reinforcement 9 of the beam, it is tightly fixed; at the same time, after inflation, the flexible sealing bag is inflated and squeezed to fill the gap 11, thereby improving the sealing and tightness of the isolation.

[0049] The invention creates an operation mode of using a flexible sealing bag as the main structure, first installing and then inflating, which greatly reduces the construction difficulty of installing the isolation device, improves the isolation effect, and reduces the construction cost. Figure 13 As shown, the invention is carried out according to the following construction method:

[0050] S1: Tie the column reinforcement to the upper surface of the slab;

[0051] S2: Erect column formwork and scaffolding to the lower level of beams and slabs;

[0052] S3: Set up beam formwork, slab formwork and scaffolding, and tie beam reinforcement and slab reinforcement;

[0053] S4: An isolation portion 4 is established at the beam-column node, and the inflatable isolation device is installed at the isolation portion 4. After the installation is completed, the main body 5 is inflated by the inflatable device until the bottom and side edges of the main body 5 are in close contact with the beam formwork, and then sealed with a sealing cover 7.

[0054] S5: pouring column concrete and vibrating it to make it dense; when the column concrete is initially set, opening the sealing cover 7 to make the body 5 shrink, taking out the body 5, and then pouring beam concrete and vibrating it to make it dense.

[0055] The material for preparing the flexible sealing bag in the invention can be any engineering plastic, polystyrene material, etc. in the prior art, as long as it meets the strength and flexibility requirements for isolation.

[0056] In some embodiments, the diameter of the flexible sealing bag is 1-4 cm, for example, 1 cm, 2 cm, 3 cm or 4 cm, which makes it easy to install between the main reinforcement 9 and the steel ring 8 of the beam, reducing the difficulty of installation. The difference between the length of the flexible sealing bag and the height of the beam is ≥ 5 cm, which can meet the height requirements of the column concrete pouring, prevent the concrete on one side of the column from flipping over from the top of the isolation device into the beam formwork, and improve the isolation effect; it can also avoid the phenomenon of each isolation unit diverging at the top, which leads to poor sealing and isolation effect. In a more excellent embodiment, a connecting strip that can connect adjacent isolation units is also provided between the tops of the main body 5. This helps to improve the isolation effect after installation and insertion, so that the above isolation devices located on the top of the board surface 3 form a whole.

[0057] In some embodiments, the left side of the body 5 is provided with a hook (not shown in the figure), and the right side of the body 5 is provided with a hook (not shown in the figure); the hook can be inserted into the hook (not shown in the figure). Figure 5 and Figure 6 and Figure 8 When installed between the main beam reinforcement 9 and the reinforcement ring 8, the two adjacent bodies 5 are connected as a whole, improving the stability of the isolation. After the bodies 5 are inflated, the hooks and buckles interact to squeeze each other in a row, forming a sealed isolation device, improving the sealing performance of the isolation. Furthermore, the mutual compression of the bodies 5 can fill the gaps 11 tightly, improving the isolation effect. Furthermore, the bodies 5, which utilize flexible sealing bags, are inserted and installed before inflation, reducing the difficulty of installing the isolation device.

[0058] like Figure 4 or as Figure 9 As shown, in some embodiments, a connecting portion 14 is provided at the top of the main body 5. This connecting portion 14 is used to connect the main bodies 5 of two adjacent isolation units. The connecting portion 14 can be coupled with the inflation port 6 to facilitate simultaneous inflation of the main bodies 5 installed side by side between the reinforcement ring 8 and the main beam reinforcement 9 during inflation of one isolation unit. This improves construction efficiency and ensures the stability of the isolation device installation. A sealing cap 7 is provided on the connecting portion 14 to facilitate sealing after inflation.

[0059] However, when using the isolation device created by the present invention, the researchers found that it still had the following technical problems:

[0060] like Figure 13As shown, after the main body 5 is inserted and installed between the steel ring 8 and the main reinforcement 9 of the beam, although the main body 5 can be inserted into the formwork 10 close to the bottom surface of the beam with the help of steel bars or rods, the bottom end of the main body 5 is not fixed on the formwork 10, causing the bottom of the main body 5 to be easily displaced during the inflation process, or even jump out of the steel ring 8, resulting in the bottom of the main body 5 being set up side by side. The tightness is not enough, and workers are required to use steel bars or rods to adjust the bottom position after inflation to achieve mutual extrusion; however, this increases the difficulty of installing the isolation device and the construction period is longer. In view of this, the researcher combined the structure of the concrete casting isolation device with different strengths at the beam-column node disclosed in the patent number 202121431658.X studied by the company in the early stage, and referred to the pad structure introduced at the bottom thereof. The pad 12 structure was introduced in the present invention, and the connection relationship between the pad 12 and the main body 5 was studied. The base plate 12 used is cast from concrete and has a circular hole formed in it. A post is provided at the bottom of the body 5 that can be inserted into the circular hole. This structure, when inserted into the circular hole, helps stabilize the bottom of the body 5. However, this approach still struggles to achieve a better technical effect. Therefore, the inventors of the present invention have further improved the design to address this technical issue.

[0061] Specific as Figure 7 and Figure 8 and Figure 9 and Figure 10 and Figure 11 and Figure 12 As shown, in some embodiments, a stabilizing ball 13 is provided at the bottom of the main body 5, and the stabilizing ball 3 is made of a flexible sealed bag; the isolation device also includes a pad 12 for mounting the isolation unit, and the pad 12 is provided with a stabilizing hole 15 that matches the stabilizing ball 13, and the stabilizing ball 13 can fall into the stabilizing hole 15. The stabilizing ball 13 includes a ball portion 13.2 and a connecting pipe 13.1. The connecting pipe 13.1 is integrally formed and connected between the bottom of the main body 5 and the ball portion 13.2, and the connecting pipe 13.1 connects the main body 5 with the interior of the ball portion 13.2. This structural setting enables the stabilizing ball 13 to be installed in the stabilizing hole 15 when the main body 5 is installed. Combined with the inflation operation process, the stabilizing ball 13 can be engaged in the stabilizing hole 15, thereby achieving the bottom fixing operation. At the same time, after the isolation operation and the column concrete pouring are completed, the stabilizing ball 13 can be deflated to shrink, which reduces the difficulty of removal and reduces the difficulty of construction. It can be seen that compared with the construction scheme of directly inserting the column into the circular hole on the pad 12, the difficulty of taking it out for recycling after the column concrete is poured is relatively low, and it also achieves the effect of fixing the bottom of the main body 5, avoiding the defect of bouncing during the inflation process and increasing the difficulty of construction.

[0062] like Figure 12 As shown, in this embodiment, a pressurizing ball 13.3 is provided inside the ball portion 13.2, and the pressurizing ball 13.3 can freely fall into the stabilizing hole 15. The force of the pressurizing ball 13.3 is fully utilized to bring it into the stabilizing hole 15. As the ball 13.2 is inflated, the air pressure pushes the ball 13.2 against the inner wall of the stabilizing hole 15, thereby improving the stability of the bottom installation of the body 5.

[0063] like Figure 11 As shown, in this embodiment, the stabilizing hole 15 includes an opening 15.1 and a bottom 15.2, with the diameter of the opening 15.1 being smaller than the diameter of the bottom 15.2. The opening 15.1 allows the ball 13.2 and the pressurizing ball 13.3 to freely fall into it. This facilitates the ball 13.2 entering the bottom 15.2 and then expanding to a size larger than the opening 15.1 after inflation. This effectively prevents the bottom of the body 5 from separating from the backing plate 12, and prevents the body 5 from bouncing and shifting during inflation. This improves the stability of the body 5 during installation and contributes to improved installation efficiency.

[0064] Other aspects not mentioned in the present invention may be implemented by referring to the prior art or common knowledge known to those skilled in the art. For example, the base plate 12 may be prepared by precast concrete; another example is the selection of an inflatable device; another example is the hole bottom 15.2 may be configured as a sphere, a cube, or other structure.

[0065] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A construction method for inflatable isolation at beam-column joints, characterized in that: The following steps are involved: S1: Tie the column reinforcement to the upper surface of the slab; S2: Erect column formwork and scaffolding to the lower level of beams and slabs; S3: Set up beam formwork, slab formwork and scaffolding, and tie beam reinforcement and slab reinforcement; S4: An isolation portion (4) is established at the beam-column node position, and an inflatable isolation device is installed at the isolation portion (4); the inflatable isolation device is composed of a plurality of isolation units, the isolation unit including a body (5), the body (5) being a flexible sealing bag, and the body (5) being able to form a cylindrical shape after being blown into gas; the top of the body (5) is integrally formed with an inflation port (6), and the inflation port (6) is provided with a sealing cover (7); the bottom of the body (5) is provided with a stabilizing ball (13), and the stabilizing ball (13) is made of a flexible sealing bag; the isolation device also includes a pad (12) for installing the isolation unit, the pad (12) is provided with a stabilizing hole (15) matching the stabilizing ball (13), and the stabilizing ball (13) can fall into the stabilizing hole (15); after the installation is completed, the body (5) is inflated with air by the inflatable device until the bottom and side edges of the body (5) are in close contact with the beam formwork, and the sealing cover (7) is used to seal the body; S5: pouring column concrete, vibrating and compacting it while pouring; when the column concrete is initially set, opening the sealing cover (7) to allow the body (5) to shrink, taking out the body (5), and then pouring beam concrete and vibrating and compacting it.

2. The inflatable isolation construction method at the beam-column joint according to claim 1 is characterized in that: The diameter of the flexible sealed bag is 1-4 cm, and the difference between the length of the flexible sealed bag and the height of the beam is ≥5 cm.

3. The inflatable isolation construction method at the beam-column joint according to claim 1 is characterized in that: The left side of the body (5) is provided with a hook, and the right side of the body (5) is provided with a hook buckle; the hook can be inserted into the hook buckle.

4. The inflatable isolation construction method at the beam-column joint according to claim 1 or 3, characterized in that: A connecting portion (14) is provided on the top of the body (5).

5. The inflatable isolation construction method at the beam-column joint as claimed in claim 4 is characterized in that: A sealing cover (7) is provided on the communication portion (14).

6. The inflatable isolation construction method at the beam-column joint according to claim 1, characterized in that: The stabilizing ball (13) comprises a ball portion (13.2) and a connecting tube (13.1), wherein the connecting tube (13.1) is integrally formed and connected between the bottom of the body (5) and the ball portion (13.2), and the connecting tube (13.1) connects the body (5) with the interior of the ball portion (13.2).

7. The inflatable isolation construction method at the beam-column joint as claimed in claim 6, characterized in that: A pressurized ball (13.3) is provided in the ball portion (13.2), and the pressurized ball (13.3) can freely fall into the stabilizing hole (15).

8. The inflatable isolation construction method at the beam-column joint as claimed in claim 7, characterized in that: The stabilizing hole (15) comprises an orifice (15.1) and a hole bottom (15.2), and the diameter of the orifice (15.1) is smaller than the diameter of the hole bottom (15.2); the orifice (15.1) is capable of allowing the ball portion (13.2) and the booster ball (13.3) to fall freely therein.

9. The inflatable isolation construction method at the beam-column joint as claimed in claim 8, characterized in that: The hole bottom (15.2) is in the shape of a cube.

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