Comprehensive treatment method and structural design for disaster of side beams of cantilevered structures of buildings

Abstract

The present invention discloses a comprehensive disaster control method for the side beams of a cantilevered structure of a house and a structural structure. The structural structure includes a cantilevered beam, a side beam and a balcony floor. A railing is provided on the top of the existing side beam. A counter-beam is formed by a reinforced concrete structure at the inner root of the railing, and a steel structure is provided in combination. The steel structure is connected to the counter-beam by a first anchor rod, and the steel structure is connected to the existing cantilever beam by a second anchor rod. In this way, the existing side beams are reinforced in advance without disturbing the existing side beams. After the new structure on the composite reinforcement plays a role, the disaster defects of the existing side beam structure are comprehensively controlled, both symptomatically and fundamentally. This is not only safer and more reliable, but also greatly reduces the requirements for supporting and unloading the cantilever structure area, effectively reduces the control cost and compresses the construction period. The present invention not only reinforces the side beams of the cantilever structure, but also effectively eliminates the hidden dangers of disasters caused by leakage of the cantilever structure.

Description

Technical Field

[0001] The present invention relates to the field of construction technology, and in particular to a comprehensive disaster management method for side beams of a cantilevered structure of a house and a structural structure. Background Art

[0002] The side beam areas of cantilevered structures in balconies of modern high-rise buildings and corridors in public places such as schools and hospitals are commonly subject to deterioration of the steel structure due to leakage and disrepair. This not only endangers the safety of the cantilevered structure area, but also the deteriorated side beam structure of the cantilevered structure can easily crack, loosen, and fall, posing a serious threat to public safety.

[0003] To this end, the side beam area needs to be reinforced. The current reinforcement technology for dealing with the hidden dangers of cantilever structure side beam disasters is to unload the cantilever structure area before construction, then remove the balcony guardrails and the corroded parts of the side beam concrete, and remove the rust layer of the steel bars to the original metal color. Then tie the steel bar formwork and re-pour the concrete. Or, chisel out the deteriorated part of the concrete, grind the rust layer of the steel bars to the original metal color, repair it with epoxy resin mortar, and then reinforce it by wrapping steel or carbon fiber. The above approach is still acceptable for low-rise buildings, but it is extremely difficult to construct for high-rise buildings, and the comprehensive remediation cost is expensive, and durability is difficult to guarantee. Therefore, it is necessary to find another way to develop a method and structure that is simpler, more efficient, and easier to implement to deal with the deterioration of cantilever structure side beam disasters. Summary of the Invention

[0004] In view of this, the present invention aims to address the deficiencies in the existing technology, and its main purpose is to provide a comprehensive method and structural structure for managing disasters in the side beams of a cantilevered structure of a house, which can effectively solve the problems of construction difficulties and high remediation costs in the existing technology for reinforcing the side beam area.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A structural structure for comprehensive disaster management of side beams of a cantilevered structure of a house, comprising two existing cantilevered beams arranged in parallel at intervals, an existing side beam connecting the outer ends of the two existing cantilevered beams, and a balcony floor connecting the existing cantilevered beams and the existing side beams, wherein a railing is provided on the top of the existing side beam, and an inverted beam is formed with a reinforced concrete structure at the inner root of the railing, and the two ends of the inverted beam are respectively connected to the two existing cantilevered beams, and a steel cage is provided in the inverted beam, and the steel cage is connected to a first anchor rod, and the first anchor rod passes through the balcony floor from top to bottom, and a steel structure is bonded to the bottom of the balcony floor, and the steel structure is fixedly connected to the first anchor rod, and both ends of the steel structure are connected to a second anchor rod, and the second anchor rod is obliquely implanted in the corresponding existing cantilevered beam; a repair body is formed at the bottom of the existing side beam, and the repair body is formed and connected to the steel structure.

[0007] As a preferred solution, a first through hole is formed through the upper and lower surfaces of the balcony floor, and a second through hole is opened on the steel structure, and the second through hole is directly connected to the first through hole; the first anchor rod includes a first hook and a bolt, the upper end of the first hook hooks the steel cage, and the bolt is welded and fixed to the lower end of the first hook, and the lower end of the bolt passes through the first through hole and the second through hole from top to bottom in sequence and is screwed and fixed with a nut. The structure is simple, the construction is convenient, and the connection is stable.

[0008] As a preferred solution, the second anchor rod is a bent steel bar, one end of which is welded to the steel structure by double-sided welding, and the welding length is greater than or equal to ten times the diameter of the bent steel bar. The other end of the bent steel bar is obliquely implanted into the existing cantilever beam, with a simple structure, convenient construction and a stable connection.

[0009] As a preferred solution, the steel structure is a flat plate structure, which is bonded to the bottom of the balcony floor by using steel structure adhesive.

[0010] As a preferred solution, the thickness of the steel structure is equal to or greater than 5.0 mm, and the width is equal to or greater than 80 mm.

[0011] As a preferred solution, the steel structure is an angle steel, which includes a horizontal part and a vertical part that are integrally connected. The horizontal part is bonded to the bottom of the balcony floor by steel structure adhesive, and the vertical part is located on the inner side of the existing side beam and buried in the repair body. A plurality of second hooks are welded on the vertical part. The plurality of second hooks are arranged along the length direction of the repair body and are connected in series by a plurality of main bars. The plurality of main bars and the plurality of second hooks are all buried in the repair body to better repair the existing side beams that are severely corroded and deteriorated, so that the repaired side beams are more stable.

[0012] As a preferred solution, the second hook is fixed to the side of the vertical portion by double-sided welding, and the welding length is greater than or equal to ten times the diameter of the second hook, so that the second hook is firmly and reliably connected to the vertical portion.

[0013] As a preferred solution, the thickness of the horizontal portion is equal to or greater than 5.0 mm, and the width is equal to or greater than 80 mm; the thickness of the vertical portion is equal to or greater than 5.0 mm, and the width is equal to or greater than 80 mm, so as to ensure the structural strength of the angle steel.

[0014] A comprehensive method for managing disasters of side beams of a cantilevered structure of a house comprises the following steps:

[0015] (1) Reinforced concrete is poured into the railing on the side beam of the cantilever structure of the house that needs to be treated to form an inverted beam. The two ends of the main reinforcement of the steel cage in the inverted beam are anchored on the beam surface corresponding to the existing cantilever beam. The construction joint between the inverted beam and the balcony floor is treated with multiple waterproof sealing treatments. The inverted beam is equipped with a first anchor rod, which passes through the balcony floor downward; the base surface of the reinforced concrete structure inverted beam and the balcony floor is roughened, and a self-healing crack penetrating crystallization waterproof coating or water-expanding sealing material is used to prevent water leakage and seal the joint;

[0016] (2) A steel structure for reinforcing the balcony floor is set at the bottom of the balcony floor corresponding to the counter-beam added to the balcony. The steel structure is fixed to the bottom of the balcony floor with steel structure adhesive, and the first anchor rod is fixedly connected to the steel structure, and the second anchor rods at both ends of the steel structure are respectively obliquely implanted into the corresponding existing cantilever beams;

[0017] (3) The corroded and deteriorated structure of the existing side beam is chiseled off to the solid body, and the rust layer of the steel bar is removed to the original metal color. Then the existing side beam is repaired with polymer mortar to form a repaired body.

[0018] As a preferred solution, the steel structure is an angle steel, which includes a horizontal part and a vertical part that are integrally connected. The horizontal part is bonded to the bottom of the balcony floor by steel structure adhesive, and the vertical part is located on the inner side of the existing side beam and buried in the repair body. A plurality of second hooks are welded on the vertical part. The plurality of second hooks are arranged along the length direction of the repair body and are connected in series by a plurality of main bars. The plurality of main bars and the plurality of second hooks are all buried in the repair body.

[0019] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0020] By forming an inverted beam with a reinforced concrete structure at the inner root of the railing and coordinating it with a steel structure, the steel structure is connected to the inverted beam through a first anchor rod, and the steel structure is connected to the existing cantilever beam through a second anchor rod. In this way, the existing side beams are reinforced in advance without disturbing the existing side beams. After the new structure on the composite reinforcement plays a role, the catastrophic defects of the existing side beam structure are comprehensively treated, both symptomatically and fundamentally. This is not only safer and more reliable, but also greatly reduces the requirements for supporting and unloading the cantilever structure area, effectively reducing the management cost and shortening the construction period. The present invention not only reinforces the side beams of the cantilever structure, but also effectively eliminates the hidden dangers of disasters caused by leakage of the cantilever structure.

[0021] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a structural schematic diagram of the first preferred embodiment of the present invention;

[0023] Figure 2 is a partial cross-sectional view of a first preferred embodiment of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a second preferred embodiment of the present invention;

[0025] Figure 4 It is a structural schematic diagram of a third preferred embodiment of the present invention;

[0026] Figure 5 1 is a schematic structural diagram of a fourth preferred embodiment of the present invention;

[0027] Figure 6 1 is a schematic structural diagram of a fifth preferred embodiment of the present invention;

[0028] Figure 7 It is a structural diagram of the sixth preferred embodiment of the present invention.

[0029] Description of the accompanying drawings:

[0030] 11. Both cantilever beams 12. Both side beams

[0031] 13. Balcony floor 14. Railing

[0032] 101, first through hole 20, reverse beam

[0033] 21. Steel cage 22. Open drainage ditch

[0034] 23. Self-healing waterproof coating 24. Sealant

[0035] 30. First anchor rod 31. First hook bar

[0036] 32. Bolt 33. Nut

[0037] 40. Steel structure 41. Horizontal part

[0038] 42, vertical portion 50, second anchor rod

[0039] 60. Restoration

[0040] 61. Penetrating crystallizing waterproof coating or water-expanding sealing material

[0041] 71. Steel structure adhesive 72. Stainless steel guardrail

[0042] 73. Second hook reinforcement 74. Main reinforcement

[0043] 75. Stainless steel fence 76. Stainless steel fence. DETAILED DESCRIPTION

[0044] Please refer to Figure 1 and Figure 2 As shown, it shows the specific structure of the first preferred embodiment of the present invention, including two existing cantilever beams 11 arranged in parallel at intervals, an existing side beam 12 connecting the outer ends of the two existing cantilever beams 11, and a balcony floor 13 connecting the existing cantilever beams 11 and the existing side beams 12, and a railing 14 is provided on the top of the existing side beam 12.

[0045] The inner root of the railing 14 is formed with a reverse beam 20 with a reinforced concrete structure. The two ends of the reverse beam 20 are respectively connected to the two existing cantilever beams 11. A steel cage 21 is provided in the reverse beam 20. The steel cage 21 is connected to a first anchor rod 30. The first anchor rod 30 passes through the balcony floor 13 from top to bottom, and a steel structure 40 is bonded to the bottom of the balcony floor 13. The steel structure 40 is fixedly connected to the first anchor rod 30. Both ends of the steel structure 40 are connected to a second anchor rod 50. The second anchor rod 50 is obliquely implanted in the corresponding existing cantilever beam 11; a restoration 60 is formed at the bottom of the existing side beam 12, and the restoration 60 is formed and connected to the steel structure 40.

[0046] The balcony floor 13 has a first through-hole 101 formed through the upper and lower surfaces. The steel structure 40 has a second through-hole (not shown) that is directly connected to the first through-hole 101. The first anchor rod 30 includes a first hook 31 and a bolt 32. The upper end of the first hook 31 hooks the steel cage 21, and the bolt 32 is welded to the lower end of the first hook 31. The lower end of the bolt 32 passes through the first through-hole 101 and the second through-hole from top to bottom and is screwed and fixed with a nut 33. In this embodiment, the diameter of the first hook 31 is 12 mm, and the bolt 32 is an M10 high-strength bolt. The bolt 32 is welded to the first hook 31 using a double-sided welding method, and the welding length is greater than or equal to ten times the diameter of the first hook 31.

[0047] The steel structure 40 is a flat plate structure, which is bonded to the bottom of the balcony floor 13 by means of a steel structure adhesive 71. The thickness of the steel structure 40 is equal to or greater than 5.0 mm, and the width is equal to or greater than 80 mm. The surface of the steel structure 40 is coated with an anti-corrosion and anti-rust coating. Before bonding, the base surface of the balcony floor 13 needs to be chiseled until the structure is solid and flat, and then treated with a high degree of cleanliness, and then the steel structure adhesive 71 is applied to bond the steel structure 40 to the bottom of the balcony floor 13.

[0048] The second anchor rod 50 is a bent steel bar, one end of which is welded to the steel structure 40 by double-sided welding, and the welding length is greater than or equal to ten times the diameter of the bent steel bar. The other end of the bent steel bar is obliquely implanted into the existing cantilever beam 11, and the length of the oblique anchor implantation is greater than or equal to ten times the diameter of the bent steel bar. The diameter of the bent steel bar is 8.0 mm.

[0049] In addition, a 100mm wide open drainage ditch 22 is reserved at the inner root of the inverted beam 20, and a stainless steel guardrail 72 is provided on the top of the inverted beam 20. The stainless steel guardrail 72 is fixedly connected to the steel cage 21 and is located on the inner side of the railing 14; and, the inverted beam 20 is provided with a 1.2mm thick self-healing waterproof coating 23, and the top inner corner of the inverted beam 20 is embedded with CL high-performance adhesive sealant 24 to achieve better waterproof performance.

[0050] The present invention also discloses a comprehensive method for managing disasters of the side beams of a cantilevered structure of a building, comprising the following steps:

[0051] (1) Reinforced concrete is poured into the railing 14 on the side beam of the cantilever structure of the house to be treated to form an inverted beam 20. The two ends of the main reinforcement of the steel cage 21 in the inverted beam 20 are anchored on the corresponding beam surface of the existing cantilever beam 11. The construction joint between the inverted beam 20 and the balcony floor 13 is treated with multiple waterproof sealing treatments. The inverted beam 20 is equipped with a first anchor rod 30, which passes downward through the balcony floor 13.

[0052] (2) A steel structure 40 for reinforcing the balcony floor 13 is provided at the bottom of the balcony floor 13 corresponding to the counter-beam 20 added to the balcony. The steel structure 40 is bonded and fixed to the bottom of the balcony floor 13 with a steel structure adhesive 71, and the first anchor rod 30 is fixedly connected to the steel structure 40, and the second anchor rods 50 at both ends of the steel structure 40 are respectively obliquely implanted into the corresponding existing cantilever beam 11; the base surface of the reinforced concrete structure counter-beam and the balcony floor 13 is roughened, and a self-healing crack penetrating crystallization waterproof coating or water-expanding sealing material 61 is used to prevent water leakage and seal.

[0053] (3) The corroded and deteriorated structure of the existing side beam 12 is removed by chiseling to the solid body, and the rust layer of the steel bar is removed to the original metal color. Then, the existing side beam is repaired with polymer mortar to form a repair body 60. The rust layer of the steel bar is removed using a special laser rust removal equipment.

[0054] (4) After the balcony reinforcement is completed, the railing 14 is raised in accordance with the mandatory provisions of the balcony guardrail construction standards.

[0055] Please refer to Figure 3 As shown, it shows the specific structure of the second preferred embodiment of the present invention. This embodiment is aimed at repairing the existing side beam 12 that has been severely corroded and deteriorated. The specific structure of this embodiment is basically the same as that of the first preferred embodiment, except that:

[0056] In this embodiment, the steel structure 40 is an angle steel, comprising a horizontal portion 41 and a vertical portion 42 integrally formed and connected. The horizontal portion 41 is bonded to the bottom of the balcony floor 13 using a steel structural adhesive 71. The vertical portion 42 is located inside the existing edge beam 12 and is embedded in the repair body 60. A plurality of second hooks 73 are welded to the vertical portion 42. These second hooks 73 are arranged along the length of the repair body 60 and connected in series by a plurality of main bars 74. The plurality of main bars 74 and the plurality of second hooks 73 are all embedded in the repair body 60. The horizontal portion 41 has a thickness equal to or greater than 5.0 mm and a width equal to or greater than 80 mm; the vertical portion 42 has a thickness equal to or greater than 5.0 mm and a width equal to or greater than 80 mm. The second hooks 73 are welded to the side of the vertical portion 42 using double-sided welding, with the weld length being greater than or equal to ten times the diameter of the second hook 73. Furthermore, the diameter of the second hook rib 73 is 8 mm, and there are two main ribs 74 , each of which has a diameter of 12 mm.

[0057] Please refer to Figure 4 As shown, it shows the specific structure of the third preferred embodiment of the present invention. The specific structure of this embodiment is basically the same as the specific structure of the aforementioned first preferred embodiment, except that:

[0058] In this embodiment, a stainless steel fence 75 is provided on the top of the reverse beam 20. The stainless steel fence 75 is tilted and fixed to the inner side of the railing 14. The installation angle of the stainless steel fence 75 is greater than or equal to 60°.

[0059] Please refer to Figure 5 As shown, it shows the specific structure of the fourth preferred embodiment of the present invention. The specific structure of this embodiment is basically the same as the specific structure of the aforementioned second preferred embodiment, except that:

[0060] In this embodiment, a stainless steel fence 76 is provided on the top of the reverse beam 20. The stainless steel fence 76 is tilted and fixed to the inner side of the railing 14. The installation angle of the stainless steel fence 76 is greater than or equal to 60 degrees.

[0061] Please refer to Figure 6 As shown, it shows the specific structure of the fifth preferred embodiment of the present invention. The specific structure of this embodiment is basically the same as the specific structure of the first preferred embodiment mentioned above, except that:

[0062] The top of the inverted beam 20 does not have a stainless steel guardrail 72 , and the stainless steel guardrail 72 is disposed on the top of the railing 14 .

[0063] Please refer to Figure 7 As shown, it shows the specific structure of the sixth preferred embodiment of the present invention. The specific structure of this embodiment is basically the same as the specific structure of the aforementioned second preferred embodiment, except that:

[0064] The top of the inverted beam 20 does not have a stainless steel guardrail 72 , and the stainless steel guardrail 72 is disposed on the top of the railing 14 .

[0065] The design focus of the present invention is: by forming an inverted beam with a reinforced concrete structure at the inner root of the railing, and coordinating with a steel structure, the steel structure is connected to the inverted beam through a first anchor rod, and the steel structure is connected to the existing cantilever beam through a second anchor rod. In this way, without disturbing the existing side beams, the existing side beams are reinforced in advance. After the new structure on the composite reinforcement plays a role, the catastrophic defects of the existing side beam structure are comprehensively treated. This is not only safer and more reliable, but also greatly reduces the requirements for supporting and unloading the cantilever structure area, effectively reducing the management cost and shortening the construction period. The present invention not only reinforces the side beams of the cantilever structure, but also effectively eliminates the hidden dangers of disasters caused by leakage of the cantilever structure.

[0066] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A structure for comprehensive disaster management of cantilevered side beams of a building, comprising two existing cantilevered beams spaced parallel to each other, an existing side beam connecting the outer ends of the two existing cantilevered beams, and a balcony floor connecting the existing cantilevered beams and the existing side beams, wherein a railing is provided on the top of the existing side beams; and characterized in that: The inner root of the railing is formed with an inverted beam with a reinforced concrete structure, and the two ends of the inverted beam are respectively connected to the two existing cantilever beams. There is a steel cage in the inverted beam, and the steel cage is connected to a first anchor rod. The first anchor rod passes through the balcony floor from top to bottom, and the bottom of the balcony floor is bonded with a steel structure, which is fixedly connected to the first anchor rod, and both ends of the steel structure are connected to the second anchor rod, and the second anchor rod is obliquely implanted in the corresponding existing cantilever beam; the bottom of the existing side beam is formed with a repair body, and the repair body is formed and connected to the steel structure; the upper and lower surfaces of the balcony floor are penetrated by a first through hole, and the steel structure is provided with a second through hole, and the second through hole is aligned with the first through hole For connection; the first anchor rod includes a first hook and a bolt, the upper end of the first hook hooks the steel cage, the bolt is welded and fixed to the lower end of the first hook, and the lower end of the bolt passes through the first through hole and the second through hole in sequence from top to bottom and is screwed and fixed with a nut; the steel structure is an angle steel, which includes a horizontal part and a vertical part that are integrally formed and connected, the horizontal part is bonded to the bottom of the balcony floor by steel structure adhesive, the vertical part is located on the inner side of the existing side beam and is buried in the repair body, and a plurality of second hooks are welded on the vertical part, the plurality of second hooks are arranged along the length direction of the repair body and are connected in series by a plurality of main bars, and the plurality of main bars and the plurality of second hooks are all buried in the repair body.

2. The structure for comprehensive disaster management of the side beam of a cantilevered structure of a house according to claim 1 is characterized by: The second anchor rod is a bent steel bar, one end of which is welded to the steel structure by double-sided welding. The welding length is greater than or equal to ten times the diameter of the bent steel bar, and the other end of the bent steel bar is obliquely implanted into the existing cantilever beam.

3. The structure for comprehensive disaster management of the cantilevered side beam of a building according to claim 1 is characterized by: The steel structure is a flat plate structure, which is bonded to the bottom of the balcony floor by means of steel structure adhesive.

4. The structure for comprehensive disaster management of the cantilevered side beam of a building according to claim 3 is characterized by: The steel structure has a thickness equal to or greater than 5.0 mm and a width equal to or greater than 80 mm.

5. The structure for comprehensive disaster management of the cantilevered side beam of a building according to claim 1 is characterized by: The second hook bar is fixed to the side surface of the vertical portion by double-sided welding, and the welding length is greater than or equal to ten times the diameter of the second hook bar.

6. The structure for comprehensive disaster management of the cantilevered side beam of a building according to claim 1 is characterized by: The thickness of the horizontal portion is equal to or greater than 5.0 mm, and the width is equal to or greater than 80 mm; the thickness of the vertical portion is equal to or greater than 5.0 mm, and the width is equal to or greater than 80 mm.

7. A comprehensive method for managing disasters in the cantilevered side beams of a building, characterized by: The comprehensive disaster management structure for the side beams of a cantilevered structure of a house according to any one of claims 1 to 6 includes the following steps: (1) Reinforced concrete is poured into the guardrail on the side beam of the cantilever structure of the house that needs to be treated to form an inverted beam. The two ends of the main reinforcement of the steel cage in the inverted beam are anchored on the beam surface corresponding to the existing cantilever beam. The construction joint between the inverted beam and the balcony floor is treated with multiple waterproof sealing treatments. The inverted beam is equipped with a first anchor rod, which passes through the balcony floor downward; the base surface of the reinforced concrete structure inverted beam and the balcony floor is roughened, and a self-healing crack penetrating crystallization waterproof coating or water-expanding sealing material is used to prevent water leakage and seal the joint; (2) A steel structure for reinforcing the balcony floor is set at the bottom of the balcony floor corresponding to the counter-beam added to the balcony. The steel structure is fixed to the bottom of the balcony floor with steel structure adhesive, and the first anchor rod is fixedly connected to the steel structure, and the second anchor rods at both ends of the steel structure are respectively obliquely implanted into the corresponding existing cantilever beams; (3) The corroded and deteriorated structure of the existing side beam is chiseled off to the solid body, and the rust layer of the steel bar is removed to the original metal color. Then the existing side beam is repaired with polymer mortar to form a repaired body.

8. The comprehensive disaster treatment method for the side beams of a cantilevered structure of a building according to claim 7 is characterized by: The steel structure is an angle steel, which includes a horizontal part and a vertical part that are integrally formed and connected. The horizontal part is bonded to the bottom of the balcony floor by steel structure adhesive, and the vertical part is located on the inner side of the existing side beam and buried in the repair body. A plurality of second hooks are welded on the vertical part. The plurality of second hooks are arranged along the length direction of the repair body and are connected in series by a plurality of main bars. The plurality of main bars and the plurality of second hooks are all buried in the repair body.

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