High-grade concrete intercepting system for beam-column joint core area and construction method

Abstract

The application provides a high-grade concrete intercepting system for a beam-column joint core area, which comprises a concrete intercepting mesh, which is fixed between the bottom and the top of beam reinforcement in the beam-column joint core area by binding in use; a leakage prevention device, which comprises a first side plate, a second side plate and a bottom plate, the thickness of the first side plate being suitable for the thickness of the concrete cover outside the beam reinforcement, the bottom plate being a flexible bottom plate, the first side plate and / or the second side plate being provided with a vertical passage for the flexible bottom plate to pass through, a pulling rod being connected to the flexible bottom plate, and the flexible bottom plate being pulled in the vertical passage through the pulling rod; and the top of the two side plates being connected through a connecting assembly. The high-grade concrete intercepting system for a beam-column joint core area and the construction method thereof are suitable for the interception of the concrete cover of beam reinforcement with different cross-sectional sizes and can intercept high and low grade concrete of a beam-column joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building construction, in particular to a high-grade concrete interception system for beam-column joint core area and a construction method. BACKGROUND

[0002] According to the design and specification requirements, when the column concrete strength is higher than the floor beam slab, the concrete strength of 50N / mm 2 is the first level, and when the column concrete strength grade is higher than the beam slab concrete strength grade by no more than one level, the concrete at the beam-column joint can be poured together with the beam slab, and when it exceeds one level, the concrete strength grade of the beam-column joint core area is the same as the frame column of the current floor. The concrete of the beam-column joint core area needs to be poured twice during construction, first pouring the column and then pouring the beam. However, due to the dense reinforcement of the beam-column joint, the complex node, and the small construction space, the interception of high and low grade concrete at the beam-column joint has been a long-standing technical problem for construction.

[0003] The current traditional industry method for intercepting high-strength concrete at the beam-column joint is the socket plate interception construction process. This process requires customizing socket plates for the frame beam section size and the transverse spacing of the longitudinal stress reinforcement at the interception position in advance according to the design drawings. This process is not suitable for complex and variable beam sections, and it cannot guarantee that the high-strength column concrete mortar will flow into the beam through the gap in the protection layer. SUMMARY

[0004] In view of the above, the present application provides a high-grade concrete interception system for the beam-column joint core area and a construction method, which is suitable for the interception of the beam reinforcement concrete protection layer of different section sizes and can intercept high and low grade concrete at the beam-column joint.

[0005] To achieve the above purpose, the technical solution adopted by the present application is to provide a high-grade concrete interception system for the beam-column joint core area, which comprises:

[0006] A concrete interception mesh is fixed between the bottom and top of the beam reinforcement in the beam-column joint core area during use.

[0007] A leakage prevention device includes a first side plate, a second side plate, and a bottom plate with a thickness suitable for the thickness of the concrete protection layer outside the beam reinforcement. The bottom plate is a flexible bottom plate, the first side plate and / or the second side plate is provided with a vertical passage for the flexible bottom plate to pass through, and the flexible bottom plate is connected with a pulling rod for pulling the flexible bottom plate in the vertical passage. The top of the side plates on both sides is connected by a connecting assembly.

[0008] Preferably, the connecting assembly comprises a gear plate connected to the first side plate and provided with a tooth surface, a gear matched with the gear plate, and a translator connected to the second side plate and located above the gear plate, and the gear is rotatably mounted at one end of the translator away from the second side plate.

[0009] Preferably, the translator is coaxially provided with the gears on both sides and provided with openings coaxial with the gears on both sides, bearings are mounted in the gears, and a rocker is connected between the openings and the bearings on both sides.

[0010] Preferably, the translator is provided with a hanging frame for hanging the gear plate.

[0011] Preferably, the concrete intercepting mesh gradually approaches the beam-column joint core area from the bottom to the top of the beam reinforcement.

[0012] Preferably, the angle between the concrete intercepting mesh and the bottom formwork surface of the beam reinforcement is 45°.

[0013] The present application provides a construction method of a beam-column joint core area high-grade concrete intercepting system, comprising the following steps:

[0014] The concrete intercepting mesh is fixed between the bottom and the top of the beam reinforcement in the beam-column joint core area;

[0015] The first side plate and the second side plate of the anti-seepage device are fixed at the position of the concrete protection layer on the two side walls of the beam reinforcement, and then the flexible bottom plate is pushed out of the vertical channel through the pull rod, so that the bottom plate is laid at the position of the concrete protection layer at the bottom of the beam reinforcement;

[0016] The concrete in the beam-column joint core area in the concrete intercepting mesh is poured;

[0017] Before the initial setting of the concrete in the beam-column joint core area, the flexible bottom plate is pulled out of the vertical channel through the pull rod, the anti-seepage device is removed, and the concrete intercepting mesh is removed;

[0018] The beam slab concrete is poured.

[0019] The construction method of the beam-column joint core area high-grade concrete intercepting system is further improved in that the connecting assembly comprises a gear plate connected to the first side plate and provided with a tooth surface, a gear matched with the gear plate, and a translator connected to the second side plate and located above the gear plate, and the gear is rotatably mounted at one end of the translator away from the second side plate; before the anti-seepage device is installed, the position of the gear on the translator on the gear plate is adjusted according to the cross section of the beam reinforcement.

[0020] The beneficial effect of the present application is that the beam-column joint core area high-grade concrete intercepting system and construction method of the present application can intercept the high-grade concrete in the beam reinforcement in the beam-column joint core area by binding and fixing the concrete intercepting mesh between the bottom and top of the beam reinforcement in the beam-column joint core area; the first side plate and the second side plate of the anti-seepage device are fixed at the position of the concrete cover on the two side walls of the beam reinforcement, and the bottom plate is arranged at the position of the concrete cover at the bottom of the beam reinforcement, so that the high-grade concrete of the concrete cover outside the beam reinforcement in the beam-column joint core area can be intercepted, and the position of the gear on the translation piece on the gear plate can make the anti-seepage device suitable for the interception of the concrete cover of the beam reinforcement with different cross-sectional sizes. The beam-column joint core area high-grade concrete intercepting system and construction method of the present application is suitable for the interception of the concrete cover of the beam reinforcement with different cross-sectional sizes, and can intercept the high and low grade concrete of the beam-column joint. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0022] Figure 1 is a structural schematic view of the concrete intercepting mesh of the beam-column joint core area high-grade concrete intercepting system of the present application installed on the beam reinforcement.

[0023] Figure 2 is a structural schematic view of the anti-seepage device of the beam-column joint core area high-grade concrete intercepting system of the present application.

[0024] Figure 3 is a structural schematic view of the pull rod and flexible plate connection of the beam-column joint core area high-grade concrete intercepting system of the present application.

[0025] Figure 4 is a structural schematic view of the first side plate and gear plate of the beam-column joint core area high-grade concrete intercepting system of the present application.

[0026] Figure 5 is a structural schematic view of the rocker of the beam-column joint core area high-grade concrete intercepting system of the present application.

[0027] Figure 6 is a structural schematic view of the gear of the beam-column joint core area high-grade concrete intercepting system of the present application.

[0028] The correspondence between the reference signs and the components is as follows:

[0029] 1-concrete intercepting mesh; 2-beam reinforcement; 3-beam-column joint core area; 4-first side plate; 5-second side plate; 6-bottom plate; 7-pulling rod; 8-gear plate; 9-translation piece; 10-gear; 11-rocker; 12-hanging frame. DETAILED DESCRIPTION

[0030] For the purpose of facilitating the understanding of the present application, the following will be described in conjunction with the accompanying drawings and examples.

[0031] Referring to Figures 1 to 6 , the present application provides a beam-column joint core area high-grade concrete intercepting system, comprising a concrete intercepting mesh 1 and a leakage prevention device. Wherein:

[0032] The concrete intercepting mesh 1 is used to be fixed between the bottom and the top of the beam reinforcement 2 in the beam-column joint core area 3, the bottom of the concrete intercepting mesh 1 is fixed on the bottom of the beam reinforcement 2, the concrete intercepting mesh 1 is fixed on the top of the beam reinforcement 2, and the width of the concrete intercepting mesh 1 is adapted to the width of the beam reinforcement 2. The concrete intercepting mesh 1 can intercept the high-grade concrete in the beam reinforcement 2 in the beam-column joint core area 3.

[0033] As shown in Figure 2 and Figure 4 , the leakage prevention device comprises a first side plate 4, a second side plate 5 and a bottom plate 6 with a thickness adapted to the thickness of the concrete protection layer outside the beam reinforcement, the bottom plate 6 is a flexible bottom plate 6, the first side plate 4 and / or the second side plate 5 is provided with a vertical passage for the flexible bottom plate 6 to pass through, the flexible bottom plate 6 is connected with a pulling rod 7, and the flexible bottom plate 6 is pulled in the vertical passage through the pulling rod 7; the top of the two side plates is connected through a connecting assembly.

[0034] Specifically, as shown in Figure 3 , the flexible bottom plate 6 comprises a first section bottom plate formed between the first side plate 4 and the second side plate 5 and a second section side plate accommodated in the vertical passage of the first side plate 4 and / or the second side plate 5 and connected with the pulling rod 7, and the first section bottom plate and the second section side plate of the flexible bottom plate 6 are at right angles. The flexible bottom plate 6 can only be longitudinally deformed and moved, and cannot be horizontally translated. The pulling rod 7 is pulled to drive the second section side plate of the flexible bottom plate 6 to move up and down and thus control the first section bottom plate.

[0035] The first side plate 4 and the second side plate 5 are fixed to the position of the concrete protection layer on the two side walls of the beam steel bar 2, can block the gap of the beam side protection layer, and avoid the concrete mortar flowing in through the beam side protection layer. The second section side plate of the flexible bottom plate 6 is controlled to extend downward in the vertical channel by the pushing and pulling rod 7, the first section bottom plate of the flexible bottom plate 6 is fixed to the position of the concrete protection layer at the bottom of the beam steel bar 2, so as to block the gap of the beam bottom protection layer and avoid the leakage of the beam bottom mortar. Therefore, the anti-seepage device can play an intercepting role on the high-grade concrete of the concrete protection layer outside the beam steel bar in the beam-column joint core area. And the flexible bottom plate 6 controlled by the pulling rod 7 can control the length of the first section bottom plate, so as to be suitable for the interception of the concrete protection layer of the beam steel bar with different sizes of sections.

[0036] As a preferred embodiment, as shown in Figure 2 , the connecting assembly comprises a gear plate 8 connected to the first side plate 4 and provided with a tooth surface on the surface, a gear 10 matched with the gear plate 8, and a translation piece 9 connected to the second side plate 5 and located above the gear plate 8. The gear 10 is rotatably installed at one end of the translation piece 9 away from the second side plate 5.

[0037] As a preferred embodiment, as shown in Figure 2 , Figure 5 , Figure 6 , coaxial gears 10 are arranged on both sides of the translation piece 9, and the coaxial gears 10 are provided with an opening. Bearings are installed in the gears 10, and the opening is connected with the bearings on both sides. A rocker 11 is arranged between the opening and the bearings. The rocker 11 controls the movement of the gear 10 on the gear plate 8, so as to control the distance between the first side plate 4 and the second side plate 5, and adapt to the interception of the concrete protection layer of the beam steel bar with different sizes of sections.

[0038] As a preferred embodiment, a hanging frame 12 for hanging the gear plate 8 is arranged on the translation piece 9. The hanging frame 12 can hold the gear plate 8 and fix the gear plate 8.

[0039] As a preferred embodiment, as shown in Figure 2 , the concrete interception mesh 1 gradually approaches the beam-column joint core area 3 from the bottom to the top of the beam steel bar 2.

[0040] As a preferred embodiment, the angle between the concrete interception mesh 1 and the bottom form plate surface of the beam steel bar 2 is 45°.

[0041] The present application provides a construction method of a beam-column joint core area high-grade concrete interception system, comprising the following steps:

[0042] Structural beam steel bar 2 binding → concrete interception mesh 1 binding → structural beam side mold closing and reinforcing → anti-seepage device installation → beam-column joint core area 3 high-grade concrete pouring → taking out the anti-seepage device → beam plate low-grade concrete pouring → film coating and water spraying maintenance

[0043] (1) Structure beam 2 steel bar binding: according to the beam reinforcement requirements of design drawings, and according to the relevant requirements of construction specification, complete the structure beam steel bar binding.

[0044] (2) Concrete intercepting mesh 1 binding: after the beam plate steel bar binding of the intercepting part is completed, install the concrete intercepting mesh 1 at the position 500 mm away from the column edge, so that the concrete intercepting mesh 1 is gradually close to the beam column node core area 3 from the bottom to the top of the beam steel bar 2 and the angle between the concrete intercepting mesh 1 and the bottom formwork surface of the beam steel bar 2 is 45°. The concrete intercepting mesh 1 is temporarily fixed on the bottom and top of the beam steel bar 2 by binding wire.

[0045] (3) Structure beam side form closing and reinforcement: the structure beam side form is closed according to the requirements of construction specification, and the side form plate reinforcement work is completed.

[0046] (4) Anti-seepage device installation: according to the size of the beam section, adjust the position of the gear 10 on the gear plate 8 on the translation part 9, fix the first side plate 4 and the second side plate 5 of the anti-seepage device at the position of the concrete protection layer on the two side walls of the beam steel bar 2, and then push the flexible bottom plate 6 out of the vertical channel through the pull rod 7, so that the bottom plate 6 is laid at the position of the concrete protection layer at the bottom of the beam steel bar.

[0047] (5) Beam column node core area 3 high-grade concrete pouring: according to the concrete strength requirements of construction drawings, complete the beam column node core area 3 high-grade concrete pouring, and pour to the top of the column, and fully vibrate the concrete.

[0048] (6) Take out the anti-seepage device: before the initial setting of the concrete in the beam column node core area 3, pull out the flexible bottom plate 6 from the vertical channel through the pull rod 7, take out the anti-seepage device, and remove the concrete intercepting mesh 1.

[0049] (7) Beam plate concrete pouring: according to the requirements of design drawings, pour the beam plate concrete, and strengthen the vibration at the position of the beam plate node core area 3 to avoid the generation of construction cold joints.

[0050] (8) Film spraying and water curing: after the completion of the concrete pouring, carry out the film spraying and water curing in time.

[0051] The high-grade concrete intercepting system of the beam-column joint core area of the application can intercept the high-grade concrete in the beam reinforcement in the beam-column joint core area by binding and fixing the concrete intercepting net between the bottom and top of the beam reinforcement in the beam-column joint core area; the first side plate and the second side plate of the anti-leakage device are fixed at the position of the concrete cover on the two side walls of the beam reinforcement, and the bottom plate is arranged at the position of the concrete cover at the bottom of the beam reinforcement, so that the high-grade concrete in the concrete cover outside the beam reinforcement in the beam-column joint core area can be intercepted, and the position of the gear on the translation member on the gear plate can make the anti-leakage device suitable for the interception of the concrete cover of the beam reinforcement with different cross-sectional sizes. The high-grade concrete intercepting system of the beam-column joint core area of the application and the construction method thereof are suitable for the interception of the concrete cover of the beam reinforcement with different cross-sectional sizes, and can intercept the high-grade and low-grade concrete of the beam-column joint.

[0052] The above description is only the preferred embodiment of the application, and does not limit the application in any form. Although the application has been disclosed as above, it is not intended to limit the application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the application, and any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the application are still within the scope of the technical solution of the application.

Claims

1. A high-grade concrete interception system for the core area of ​​a beam-column joint, characterized in that, include: Concrete interception mesh is used to tie and fix it between the bottom and top of the beam reinforcement in the core area of ​​the beam-column joint; A leak-proof device includes a first side plate, a second side plate, and a bottom plate, the thickness of which is suitable for the thickness of the concrete cover layer outside the beam reinforcement. The bottom plate is a flexible bottom plate. The first side plate and / or the second side plate are provided with vertical channels for the flexible bottom plate to pass through. A pull rod is connected to the flexible bottom plate, and the flexible bottom plate is pulled out through the vertical channels by the pull rod. The tops of the two side plates are connected by a connecting assembly. The connecting assembly includes a gear plate connected to a first side plate and having teeth on its surface, a gear that meshes with the gear plate, and a translation member connected to a second side plate and located above the gear plate. The gear is rotatably mounted on the end of the translation member away from the second side plate.

2. The high-grade concrete interception system in the core area of ​​the beam-column joint as described in claim 1, characterized in that, The translation component has gears coaxially arranged on both sides and has openings coaxial with the gears on both sides. Bearings are installed inside the gears, and rocker arms are connected between the openings and the bearings on both sides.

3. The high-grade concrete interception system in the core area of ​​the beam-column joint as described in claim 1, characterized in that, The translation component is provided with a hanging frame for suspending the gear plate.

4. The high-grade concrete interception system in the core area of ​​the beam-column joint as described in claim 1, characterized in that, The concrete interception mesh gradually approaches the core area of ​​the beam-column joint from the bottom to the top of the beam reinforcement.

5. The high-grade concrete interception system in the core area of ​​the beam-column joint as described in claim 1, characterized in that, The angle between the concrete intercepting mesh and the bottom formwork surface of the beam reinforcement is 45°.

6. A method for intercepting high-grade concrete in the core area of ​​a beam-column joint, characterized in that, include: Provide a high-grade concrete interception system for the core area of ​​beam-column joints as described in any one of claims 1 to 5; The concrete mesh is tied and fixed between the bottom and top of the beam reinforcement. The first and second side plates of the anti-seepage device are fixed to the concrete protective layer on both sides of the beam reinforcement. Then, the flexible bottom plate is pushed out of the vertical channel by the pull rod so that the bottom plate is laid at the position of the concrete protective layer at the bottom of the beam reinforcement. Concrete was poured in the core area of ​​the beam-column joints within the concrete interception mesh. Before the concrete in the core area of ​​the beam-column joint initially sets, the flexible base plate is pulled out of the vertical channel by the pull rod, the anti-seepage device is removed, and the concrete interception mesh is dismantled. Pour concrete for the beams and slabs.

7. The method for intercepting high-grade concrete in the core area of ​​a beam-column joint as described in claim 6, characterized in that, The connecting assembly includes a gear plate connected to the first side plate and having a toothed surface, a gear that meshes with the gear plate, and a translation member connected to the second side plate and located above the gear plate. The gear is rotatably mounted on the end of the translation member away from the second side plate. Before the anti-leakage device is installed, the position of the gear on the gear plate on the translation member is adjusted according to the cross-section of the beam reinforcement.

Images