Aerial corridor lifting and reinforcing device
By designing an air corridor lifting and reinforcement device, multiple rear reinforcement points are connected into a complete structure using the stress distribution beam and legs, which solves the problems of excessive load bearing and uneven force dispersion of a single reinforcement point, improves the stability and bearing capacity of the structure, and reduces construction risks.
Patent Information
- Application Number
- CN202422508563.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-10-16
AI Technical Summary
During the overall lifting of the steel structure corridor, the independent setting of multiple rear reinforcement points causes a single reinforcement point to bear the self-weight load and lift reaction force too high, and the stress is unevenly distributed, increasing construction risks.
A lifting and reinforcement device for air corridors is designed, including a stress distribution beam and a leg welded below. The leg is composed of several short columns arranged at intervals and is fixed to the main building structure through the rear embedded parts, and is connected to the fully penetrated welding.
By connecting multiple rear reinforcement points into a complete structural system, the stability and load-bearing capacity of the structure are improved, and the self-weight load of the corridor truss is uniformly transmitted and the reaction force is increased, reducing construction risks.
Smart Images
Figure CN223003811U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, and particularly relates to an air corridor lifting and strengthening device. Background Technique
[0002] In the field of steel structures, the application of steel truss corridors has become increasingly popular in recent years, mainly due to the increasing demand for large-span and high-altitude connection structures in modern architecture. With the acceleration of the urbanization process, the construction scale of large public buildings, transportation hubs, and urban complexes has been continuously expanding, posing higher requirements for the corridor structures connecting different buildings or floors. The overall lifting of steel structure corridors is a relatively complete construction technology. As a force-transferring member, the lifting structure needs to transfer the reaction force received during lifting to the main structure. When the main structure is insufficient in bearing capacity during the lifting stage and needs to be strengthened, the post-strengthening support method is usually adopted to disperse the lifting reaction force and enhance the bearing capacity and integrity of the space frame. When the overall lifting of the steel structure corridor is carried out on a complex main structure, multiple post-strengthenings at multiple positions are required to disperse the force and transfer it to the main frame structure to meet the force requirements. However, multiple post-strengthenings are independently arranged, which easily leads to too high self-weight load and lifting reaction force borne by a single post-strengthening, and the multiple post-strengthening positions are scattered, which easily causes uneven force dispersion and increases the construction risk during the corridor lifting construction process. Content of the Utility Model
[0003] The purpose of the utility model is to provide an air corridor lifting and strengthening device in view of the deficiencies of the prior art.
[0004] The technical solution of the utility model is an air corridor lifting and strengthening device, which includes a force distribution beam for supporting the corridor truss and legs welded below the distribution beam. The legs are composed of several short columns arranged at intervals, and the legs are fixed to the main building structure through post-embedded parts.
[0005] Preferably, the post-embedded parts include a first post-embedded part fixed on the concrete column of the main building structure and a second post-embedded part fixed on the concrete slab of the main building structure. The second post-embedded part is fixed to the concrete slab in the form of a hoop.
[0006] Preferably, the second post-embedded part includes two steel plates that embrace the upper and lower parts of the concrete slab, and the two steel plates are fixed to the concrete slab through tension bolts.
[0007] Preferably, the first post-embedded part is fixed to the upper part of the concrete column through chemical anchor bolts.
[0008] Preferably, the outriggers include a front outrigger welded to the first post-embedded part and a rear outrigger welded to the second post-embedded part, and stiffening plates are arranged on opposite sides at the lower end of the rear outrigger.
[0009] Preferably, the distribution beams include a front distribution beam welded to the top of the front outrigger and a rear distribution beam welded to the top of the rear outrigger, and the corridor truss is connected and fixed to the front distribution beam and the rear distribution beam through clamping plates.
[0010] Preferably, a clamping groove adapted to the lower chord of the corridor truss is formed at the bottom of the clamping plate, and after the corridor truss is assembled and positioned, the lower chord of the corridor truss is clamped in the clamping groove.
[0011] Preferably, the distribution beams and the outriggers, and the outriggers and the post-embedded parts are all connected by full penetration welding.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] (1) By providing a force distribution beam, the force distribution beam is connected to the post-embedded part through several short columns welded below it, so that the concrete columns and concrete slabs at multiple post-embedded part layout points can be effectively connected together, that is, multiple scattered post-reinforcement points are connected together to form a complete structural system, thereby improving the structural stability, enhancing the overall bearing capacity of the reinforcement device, and being able to evenly transfer the self-weight load of the corridor truss and the lifting reaction force to the scattered concrete columns and concrete slabs, increasing the load stability of the structural slab surface.
[0014] (2) By adopting chemical anchor bolts for post-reinforcement bonding, the connection strength between the first post-embedded part and the concrete column can be ensured.
[0015] (3) By fixing the second post-embedded part on the concrete slab in the form of a hoop, not only can the connection strength between the second post-embedded part and the concrete slab be ensured, but also the concrete slab can be reinforced; since the bottom steel plate of the second post-embedded part is fixed at the bottom of the concrete slab by the construction method of punching and hoisting, compared with the prior art of installing the steel plate by scaffolding under the concrete slab, this punching and hoisting construction has accurate positioning, simple operation and reduced construction cost, especially being conducive to the hoop construction of the post-embedded part of the concrete slab with a very high floor height.
[0016] (4) By arranging a clamping plate between the lower chord of the corridor truss and the distribution beam, the lower chord of the corridor truss can be connected and fixed to the distribution beam, and it can also be used as a temporary support during installation to ensure the stability of the positioning, installation and welding of the corridor truss.
[0017] (5) The distribution beams and the outriggers, and the outriggers and the post-embedded parts are all connected by full penetration welding, ensuring that the connection is firm and gapless.
[0018] ⑹ By setting up the aerial corridor lifting and strengthening device, the stability during the lifting of the corridor is ensured, and the construction safety is further improved. Description of the Drawings
[0019] Figure 1 is the layout schematic diagram of the aerial corridor lifting and strengthening device of the present utility model;
[0020] Figure 2 is Figure 1 the schematic cross-sectional view A-A in
[0021] Figure 3 is Figure 2 the structural schematic diagram of the clamping plate in
[0022] Figure 4 is the layout schematic diagram of the post-embedded parts of the present utility model;
[0023] Figure 5 is the structural schematic diagram of the first post-embedded part;
[0024] Figure 6 is the top view of the connection between the second post-embedded part and the short column;
[0025] Figure 7 is Figure 6 the schematic diagram from another angle;
[0026] Figure 8 is Figure 6 the schematic diagram from yet another angle.
[0027] Description of the Main Component Symbols:
[0028] Corridor truss 1; distribution beam 2; front distribution beam 21; rear distribution beam 22; leg 3; front leg 31; rear leg 32; post-embedded part 4; first post-embedded part 41; second post-embedded part 42; main building structure 5; concrete column 51; concrete slab 52; chemical anchor bolt 6; tie bolt 7; stiffening plate 8; clamping plate 9; clamping groove 91. Detailed Embodiment
[0029] The present utility model will be further described in detail below with reference to the drawings:
[0030] The technical solution of the present utility model is an aerial corridor lifting and strengthening device, which includes a force distribution beam 2 for supporting the corridor truss 1 and legs 3 welded below the distribution beam 2. The legs 3 are composed of several short columns arranged at intervals, and the legs 3 are fixed to the main building structure 5 through post-embedded parts 4. By setting a force distribution beam 1 at the position affecting the primary lifting, the legs 3 welded below the force distribution beam 2 are tightly connected to the post-embedded parts 4 to achieve stable support of the structure, thereby providing the required site for the subsequent assembly of the corridor truss, the installation of the lifting platform, lifting equipment, etc.; since the connection between the distribution beam 2 and the legs 3 and the connection between the legs 3 and the post-embedded parts 4 both adopt full penetration welding methods, the firmness of the connection is ensured without gaps. The aerial corridor lifting and strengthening device provided by the present utility model can effectively connect the concrete columns and concrete slabs at multiple post-embedded part layout points through the setting of the force distribution beam, that is, connect multiple scattered post-strengthening points together to form a complete structural system, thereby improving the stability of the structure, enhancing the overall bearing capacity of the strengthening device, and being able to evenly transfer the self-weight load of the corridor truss and the lifting reaction force to the scattered concrete columns and concrete slabs, increasing the load stability of the structural slab surface.
[0031] Please refer to Figures 4 to 8 As shown, the post-embedded part 4 includes a first post-embedded part 41 fixed on the concrete column 51 of the main building structure 5 and a second post-embedded part 42 fixed on the concrete slab 52 of the main building structure 5.
[0032] The first post-embedded part 41 is fixed on the upper part of the concrete column 51 through chemical anchor bolts 6, and chemical anchor bolts 6 are used for post-strengthening bonding to ensure the connection strength between the first post-embedded part 41 and the concrete column 51.
[0033] The second post-embedded part 42 is fixed to the concrete slab 52 in the form of a hoop. Specifically, the second post-embedded part 42 includes two steel plates held on the upper and lower parts of the concrete slab 52, and the two steel plates are fixed to the concrete slab 52 through tension bolts 7. By fixing the second post-embedded part to the concrete slab in the form of a hoop, not only can the connection strength between the second post-embedded part and the concrete slab be ensured, but also the concrete slab can be strengthened.
[0034] It is worth noting that the second post-embedded part is fixed to the concrete slab in the form of a hoop. During the construction process, only precise holes need to be drilled in the upper part of the concrete slab. After passing the steel wire rope through the holes, the bolts and steel plates assembled below the concrete slab are lifted as a whole and moved up to the bottom of the concrete slab. After the bolts pass through the concrete slab and its upper steel plate in sequence, nuts are used to lock and fix the upper part of the bolts; compared with the prior art of installing the bottom steel plate by scaffolding below the concrete slab, the above-mentioned drilling and hoisting method is convenient for construction, simple to operate, and especially convenient for the construction of the post-embedded part hoop on the concrete slab with a very high storey height.
[0035] In this embodiment, based on the actual situation of the engineering construction site, the concrete column 51 and the beam-slab 52 are selected as the layout points for the post-embedded parts after reinforcement. According to the calculation, the chemical anchor bolt specifications (Table 1) and the characteristic value of bearing capacity (Table 2), 18 M24 chemical anchor bolts as shown in Figure 5 are selected for fixing the first post-embedded part 41. The buried plate has a specification of 500×400×20 and is made of Q235B. Layout, positioning and drilling are carried out according to the positions of the hanging points on the concrete column and the corridor truss, and post-embedded reinforcement bonding with chemical anchor bolts is adopted to ensure the connection strength between the first post-embedded part 41 and the concrete column 51.
[0036] Table 1 Hilti HVA Chemical Anchor Bolt Models
[0037]
[0038] Table 2 Characteristic Value of Bearing Capacity of Chemical Anchor Bolts Characteristic value of bearing capacity: Concrete C20 / 25–f ck,cube =25N / mm 2 and the anchor bolt HAS 5.8
[0039]
[0040] The second post-embedded part 42 is fixed by multiple M30 tension bolts. The bolts are 4.8-grade ordinary bolts, and double nuts are used at the upper part. The bolt length is 1500 mm. The second post-embedded part 42 includes two steel plates with a specification of 1100*600*30 and is made of Q235B. Layout and positioning are carried out on the concrete slab according to the positions of the hanging points on the concrete slab and the corridor truss, and drilling is carried out on the concrete slab. The second post-embedded part 42 is fixed on the concrete slab in the form of a hoop, as shown in Figures 6 to 8 and steel plates are wrapped around both the upper and lower parts of the concrete slab and fixed by the tension bolts 7.
[0041] Please refer to the figure shown. The support leg 3 includes a front support leg 31 welded to the first post-embedded part 41 and a rear support leg 32 welded to the second post-embedded part 42. Stiffening plates 8 are arranged on the opposite sides at the lower end of the rear support leg 32, and the stiffening plates 8 are used to increase the lateral restraint and support to improve the overall performance of the structure.
[0042] Please refer to Figure 1 shown. The distribution beam 2 includes a front distribution beam 21 welded to the top of the front support leg 31 and a rear distribution beam 22 welded above the rear support leg 32. The corridor truss 1 is connected and fixed to the front distribution beam 21 and the rear distribution beam 22 through the clamping plate 9; by fixing the front distribution beam 21 and the rear distribution beam 22 at the bottom of the corridor truss 1, the self-weight load and the lifting reaction force on the corridor truss 1 are transmitted to the concrete column 51 and the concrete slab 52 of the main building structure 5, thus ensuring the stability and safety of the entire building structure.
[0043] As shown in Figure 3As shown in the figure, a card slot 91 adapted to the lower chord of the corridor truss 1 is provided at the bottom of the card plate 9. After the corridor truss 1 is assembled and positioned, the lower chord of the corridor truss 1 is clamped in the card slot 91. The card slot 91 is used to connect and fix the lower chord of the corridor truss 1 to the distribution beam 2. The function of the card plate 9 is to serve as a temporary support during installation to ensure the stability of the positioning, installation and welding of the corridor truss. The card plate 9 is fixed by 10mm double-sided fillet welds.
[0044] The construction process of the aerial corridor reinforcement device provided by the present utility model is as follows: before the aerial corridor is lifted, the force distribution beam 2 is pre-installed, and the distribution beam 2 is connected to the main building structure 5 through the post-embedded parts 4. The specific construction steps of the aerial corridor reinforcement device are as follows:
[0045] First, accurately drill holes in the concrete column 51 and the concrete slab 52, and fix the first post-embedded part 41 and the second post-embedded part 42 respectively to ensure firmness and accuracy. Among them, the first post-embedded part 41 is fixed to the concrete column 51 by chemical anchor bolts; the second post-embedded part 42 is fixed to the concrete slab 52 in the form of a hoop. Specifically, after the corresponding positions of the two sides of the concrete slab 52 are drilled, a steel plate is placed at the hole position of the concrete slab 52 and a simple operation frame is erected. After the steel wire rope on the operation frame passes through the hole, the assembled bolts and steel plates below the concrete slab 52 are lifted as a whole and moved up to the bottom of the concrete slab 52. After the bolts pass through the concrete slab and the upper steel plate in sequence, nuts are used to lock and fix the upper part of the bolts.
[0046] Subsequently, the legs 3 of the force distribution beam are tightly connected to the post-embedded parts 4 by full penetration welding to achieve stable support of the structure. The legs are composed of several short columns. Among them, the front leg 31 is welded to the first post-embedded part 41, the rear leg 32 is welded to the second post-embedded part 42, and stiffening plates 8 are welded to the opposite sides at the lower end of the rear leg 32. The thickness of the stiffening plates 8 is 12mm, and they are connected to the structure by fillet welds with a weld leg size of 7mm.
[0047] Then, with the help of a tower crane, the distribution beam 2 is hoisted to the predetermined position for accurate installation; during the installation process, the distribution beam 2 and the legs 3 adopt the full penetration welding process to ensure that the connection is firm and gapless; among them, the front distribution beam 21 is welded to the top of the front leg 31, and the rear distribution beam 22 is welded to the top of the rear leg 32, thereby connecting the concrete columns and concrete slabs at multiple post-embedded part layout points together, that is, connecting multiple scattered post-reinforcement points together to form a complete structural system, thereby improving the stability of the structure and enhancing the overall bearing capacity of the reinforcement device.
[0048] After the force distribution beam 2 is installed, the pre-assembly work of the prefabricated section of the corridor truss 1 is carried out above it. The lower chord of the corridor truss 1 is connected and fixed to the distribution beam 2 through the clamping plate 9. After the assembly and positioning of the corridor truss 1 are completed, the lower chord of the corridor truss 1 is connected and fixed to the distribution beam 2 by using the card slot 91 provided on the clamping plate 9. The function of the clamping plate 9 is to serve as a temporary support during installation to ensure the stability of the truss positioning, installation and welding. The clamping plate 9 is fixed by using 10mm double-sided fillet welds.
[0049] The effective setting of the force distribution beam 2 connects multiple post-embedded parts 4 layout points together to form a complete structural system, thereby improving the structural stability, enhancing the overall bearing capacity of the reinforcement device, and being able to evenly transfer the self-weight load of the corridor truss and the lifting reaction force to the scattered concrete columns and concrete slabs, increasing the load stability of the structural slab surface.
[0050] The above are only the preferred embodiments of the present invention. All equivalent changes and modifications made according to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.
Claims
1. An aerial corridor lifting and reinforcement device, characterized in that: It includes a force distribution beam for supporting the corridor truss and a support leg welded under the distribution beam, the support leg is composed of a number of short columns arranged at intervals, and the support leg is fixed to the main building structure through a rear embedded part.
2. The aerial corridor lifting and reinforcement device according to claim 1 is characterized in that: The rear embedding member includes a first rear embedding member fixed on the concrete column of the main building structure and a second rear embedding member fixed on the concrete slab of the main building structure, wherein the second rear embedding member is fixed to the concrete slab in the form of a hoop.
3. The aerial corridor lifting and reinforcement device according to claim 2 is characterized in that: The second post-embedded component includes two steel plates embraced at the upper and lower parts of the concrete slab, and the two steel plates are fixed to the concrete slab by tension bolts.
4. The aerial corridor lifting and reinforcement device according to claim 2 is characterized in that: The first post-embedded component is fixed to the upper part of the concrete column by chemical anchor bolts.
5. The aerial corridor lifting and reinforcement device according to claim 2 is characterized in that: The supporting legs include a front supporting leg welded to the first rear embedded part and a rear supporting leg welded to the second rear embedded part, and stiffening plates are arranged on opposite sides of the lower end of the rear supporting legs.
6. The aerial corridor lifting and reinforcement device according to claim 5 is characterized in that: The distribution beam comprises a front distribution beam welded on the top of the front support leg and a rear distribution beam welded on the top of the rear support leg, and the corridor truss is connected and fixed to the front distribution beam and the rear distribution beam through a clamping plate.
7. The aerial corridor lifting and reinforcement device according to claim 6 is characterized in that: A slot matching the lower chord of the corridor truss is provided at the bottom of the clamping plate. After the corridor truss is assembled and positioned, the lower chord of the corridor truss is clamped in the slot.
8. The aerial corridor lifting and reinforcement device according to claim 1 is characterized in that: The distribution beam and the supporting legs, and the supporting legs and the rear embedded parts are connected by full penetration welding.