Floor connection structure

Abstract

The utility model relates to a floor connecting structure belongs to the building engineering technical field, include: steel roof beam and steel plate structure, the second flange of steel roof beam is provided with deformation mechanism between steel plate structure, the steel plate structure is supported and is through the plastic deformation of itself and dissipates a large number of seismic energy, protects steel roof beam and floor and does not take place serious damage, as the first safety guarantee, the first flange of steel roof beam is provided with limit mechanism between steel plate structure, prevents the deformation amplitude too big, as the second safety guarantee, the steel plate structure includes steel plate, material is low alloy high strength structural steel, and a plurality of parallelly connected steel plate is equipped with the anti-seismic joint, and the sealing mechanism is provided at the anti-seismic joint. The utility model discloses reasonable structure design, through setting limit mechanism, deformation mechanism, solved the floor connecting structure of existing in the recovery after the earthquake, due to the damage of steel roof beam, and some need to replace the whole, thereby increased the repair cost and the difficulty of building after the disaster problem.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, and in particular relates to a floor slab connection structure. Background Technology

[0002] In the field of modern construction engineering, steel frame structures are widely used in various types of buildings, especially factories and large-span buildings, due to their advantages such as high strength, light weight and fast construction speed. As an important component of steel frame structures, floor slabs not only bear the transmission of vertical loads, but also coordinate the work of each frame column under horizontal loads. The performance of its connection structure is directly related to the safety and stability of the entire structure.

[0003] Traditional floor slab connection methods, such as the bolted-welded hybrid connection or the all-bolted connection commonly used in steel frame structures, often suffer irreversible damage when subjected to dynamic loads from natural disasters such as earthquakes and strong winds, after undergoing significant deformation. This damage can manifest as weld cracking, bolt damage, or connection breakage. During post-earthquake recovery, the damaged steel plate beams sometimes require complete replacement, increasing the cost and difficulty of post-disaster building repairs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a floor slab connection structure suitable for floor slab connections in recoverable structures.

[0005] A floor slab connection structure includes: a steel beam and a steel plate structure. A deformation mechanism is provided between the second flange of the steel beam and the steel plate structure to support the steel plate structure and dissipate a large amount of seismic energy through its own plastic deformation, thus protecting the steel beam and the floor slab from serious damage, serving as the first safety guarantee. A limit mechanism is provided between the first flange of the steel beam and the steel plate structure to prevent excessive deformation, serving as the second safety guarantee.

[0006] The steel plate structure includes steel plates made of low-alloy high-strength structural steel, and seismic joints are provided between multiple parallel steel plates.

[0007] A sealing mechanism is provided at the seismic joint.

[0008] The sealing mechanism includes a sealing plate with downward protrusions on both sides to form downward protrusions; a sealing groove is provided on the steel plate, and the protrusions on both sides of the sealing plate cooperate with the sealing groove.

[0009] The compressive and shear strength of the closed plate is significantly less than that of the steel plate.

[0010] The inner wall of each sealing groove is provided with a sealing strip.

[0011] Multiple deformation mechanisms are arranged along the length of the steel beam and symmetrically positioned on both sides of the steel beam; each deformation mechanism includes an arc-shaped energy-dissipating shear plate, the upper end of which is connected to the steel plate structure and the lower end of which is connected to the second flange of the steel beam.

[0012] The energy-consuming shear plate is made of low yield point steel.

[0013] The limiting mechanism includes a fixed plate, the lower surface of which is fixedly connected to the steel beam, and a lower limiting block fixedly connected to the upper surface of the fixed plate; multiple lower limiting blocks are arranged along the length of the steel beam; an upper limiting block is movably inserted into the lower limiting block, and the upper surface of the upper limiting block is fixedly connected to the steel plate structure; under normal conditions, there is a gap between the upper limiting block and the lower limiting block; when the plastic deformation of the deformation mechanism reaches a preset threshold, the upper limiting block and the lower limiting block are precisely fitted and contacted.

[0014] The lower limit block is shaped like a frustum, and an inverted frustum-shaped groove is provided inside the lower limit block. The upper limit block is also shaped like an inverted frustum, which matches the shape of the inverted frustum groove.

[0015] By employing the above technical solution, this utility model application has at least the following beneficial effects:

[0016] This utility model presents a floor slab connection structure with a reasonable design. By incorporating limiting and deformation mechanisms, it solves the problem that existing floor slab connection structures often require complete replacement of damaged steel beams during post-earthquake recovery, increasing the cost and difficulty of post-disaster building repairs. Specifically, the deformation mechanism supports the first and second steel plates. During an earthquake, the deformation mechanism bears the force at the connection between the steel beam and the steel plate structure, deforming to prevent damage to the steel beam and steel plate structure itself, serving as an initial safety guarantee. After the earthquake, multiple deformation mechanisms can be removed and replaced with new ones, eliminating the need to replace steel beams or plates, thus facilitating the restoration of the original structure and saving costs.

[0017] This invention is applicable to floor slab connections in recoverable structures. The sealing mechanism effectively seals the seismic joint between the first and second steel plates. The interlocking convex and concave fit enhances the sealing contact area, effectively preventing rainwater, dust, and other impurities from seeping into the structure through the seismic joint, thus avoiding corrosion of the steel beams and connecting components. When the plastic deformation of the energy-dissipating shear plate reaches a preset threshold, the inverted frustum-shaped upper limit block and the inverted frustum-shaped groove of the lower limit block of the limiting mechanism precisely engage, utilizing their geometric compatibility to restrict further relative displacement between the steel plate structure and the steel beam. This limiting effect prevents structural instability caused by excessive deformation of the deformation mechanism, providing secondary safety assurance for the main structure. Attached Figure Description

[0018] Figure 1A schematic diagram of a floor slab connection structure provided by this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A;

[0020] Figure 3 A schematic diagram of the deformation mechanism in the floor slab connection structure provided in this embodiment of the utility model;

[0021] Figure 4 A side view of the floor slab connection structure provided in an embodiment of this utility model;

[0022] Figure 5 An exploded view of the floor slab connection structure provided in an embodiment of this utility model;

[0023] in:

[0024] 1-Steel beam, 2-First steel plate, 3-Second steel plate, 4-Seismic joint, 5-Sealing mechanism, 501-Sealing plate, 502-Sealing strip, 503-First bolt, 6-Deformation mechanism, 601-Energy-dissipating shear plate, 602-Upper mounting plate, 603-Lower mounting plate, 604-Second bolt, 7-Limiting mechanism, 701-Fixing plate, 702-Lower limit block, 703-Upper limit block. Detailed Implementation

[0025] To better explain and facilitate understanding of this utility model, the technical solution and effects of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1-5 As shown, this embodiment provides a floor slab connection structure, including a steel beam 1 and a steel plate structure connected thereto. The steel beam 1 is an I-beam made of Q390 steel. A limit mechanism 7 is provided between the upper flange of the steel beam 1 and the steel plate structure to prevent excessive deformation. A deformation mechanism 6 is provided between the lower flange of the steel beam 1 and the steel plate structure. The deformation mechanism 6 supports the first steel plate 2 and the second steel plate 3 and dissipates a large amount of seismic energy through its own plastic deformation, protecting the steel beam 1 and the floor slab from serious damage.

[0027] The steel plate structure comprises two steel plates arranged in parallel, specifically a first steel plate 2 and a second steel plate 3, both made of Q345B low-alloy high-strength structural steel. An anti-seismic joint 4 is provided between the first steel plate 2 and the second steel plate 3.

[0028] Furthermore, a sealing mechanism 5 is provided at the seismic joint 4 to seal the seismic joint 4. Specifically, the sealing mechanism 5 includes a sealing plate 501, the sealing plate 501 having significantly lower compressive and shear strength than the steel plate; the sealing plate 501 has downward protrusions on both sides to form downward protrusions; sealing grooves are formed on the first steel plate 2 and the second steel plate 3, and sealing strips 502 are fixedly connected to the inner walls of the sealing grooves. The protrusions on both sides of the sealing plate 501 cooperate with the sealing grooves, embedding into the interior of the sealing grooves and fitting against the sealing strips 502 to increase the sealing performance between the sealing plate 501 and the first steel plate 2 and the second steel plate 3. The sealing plate 501 is connected to the first steel plate 2 and the second steel plate 3 by a first bolt 503, thereby sealing the seismic joint 4. In case of damage, it can be disassembled using the first bolt 503. In daily use, the sealing mechanism 5 can prevent rainwater from dripping down from the seismic joint 4. During an earthquake, the compressive and shear strength of the sealing plate 501 is much smaller than that of the steel plate, so the sealing plate 501 will be damaged first, allowing displacement between the first steel plate 2 and the second steel plate 3 to dissipate seismic energy.

[0029] In this embodiment, the sealing plate 501 is made of polyvinyl chloride.

[0030] Furthermore, multiple deformation mechanisms 6 are arranged symmetrically on both sides of the steel beam 1 along its length and connected to the lower flange of the I-beam. Through their own plastic deformation, they dissipate a large amount of seismic energy, protecting the steel beam 1 and the floor slab from severe damage. Specifically, the deformation mechanism 6 includes an arc-shaped energy-dissipating shear plate 601, which is used to withstand the shear force of the earthquake. An upper mounting plate 602 is fixedly connected to the upper end of the energy-dissipating shear plate 601, and the energy-dissipating shear plate 601 is connected to the first steel plate 2 or the second steel plate 3 through the upper mounting plate 602; a lower mounting plate 603 is fixedly connected to the lower end of the energy-dissipating shear plate 601, and the energy-dissipating shear plate 601 is connected to the lower flange of the steel beam 1 through the lower mounting plate 603. In daily use, the deformation mechanism 6 is used to provide support force. The energy-dissipating shear plate 601 is made of low yield point steel, such as LY100 steel. This steel has a low yield strength and can undergo plastic deformation first under seismic action. It protects the main structure through plastic energy dissipation and can also provide a certain support force in daily use.

[0031] Furthermore, a second bolt 604 is installed on the upper mounting plate 602 to connect the upper mounting plate 602 to the first steel plate 2 or the second steel plate 3; a second bolt 604 is installed on the lower mounting plate 603 to connect the lower mounting plate 603 to the steel beam 1. When replacement is required, the second bolt 604 can be removed to remove and replace the energy-consuming shear plate 601.

[0032] In daily use, during an earthquake, the deformation mechanism 6 bears the force at the connection between the steel beam 1 and the steel plate, and the deformation mechanism 6 deforms, so that the steel beam 1 and the steel plate body are not damaged. After an earthquake, multiple deformation mechanisms 6 can be removed and replaced with new deformation mechanisms 6 without replacing the steel beam 1 or the steel plate structure, thus facilitating the restoration of the original structure and saving costs.

[0033] Furthermore, the limiting mechanism 7 includes a fixed plate 701, the lower surface of which is fixedly connected to the steel beam 1, and a plurality of lower limiting blocks 702 are fixedly connected to the upper surface of the fixed plate 701. The plurality of lower limiting blocks 702 are arranged along the length direction of the steel beam 1. An upper limiting block 703 is movably inserted into the lower limiting block 702, and the upper surface of the upper limiting block 703 is fixedly connected to the first steel plate 2. Under normal conditions, there is a certain gap between the upper limiting block 703 and the lower limiting block 702. When the deformation degree of the deformation mechanism 6 is too large, the upper limiting block 703 comes into contact with the lower limiting block 702, indicating that when the deformation of the energy-consuming shear plate 601 reaches the gap value, the limiting mechanism 7 limits further deformation to protect the safety of the main structure.

[0034] The lower limit block 702 is shaped like a frustum, and an inverted frustum-shaped groove is formed inside the lower limit block 702. The upper limit block 703 is shaped like an inverted frustum, and the shape of the upper limit block 703 matches the shape of the inverted frustum groove. At the same time, the height of the upper limit block 703 is higher than the inverted frustum-shaped groove, so that the upper limit block 703 and the lower limit block 702 do not contact each other.

[0035] The working principle of the above-mentioned floor slab connection structure is as follows:

[0036] The steel plate structure formed by the first steel plate 2 and the second steel plate 3 serves as the core load-bearing component of the floor slab, relying on the steel beam 1 to transfer vertical loads; the deformation mechanism 6 at this time undertakes the main support function, providing stable vertical support force for the connection node between the steel plate structure and the steel beam 1, and ensuring the overall load-bearing performance of the floor slab.

[0037] The sealing mechanism 5 effectively seals the seismic joint 4 between the first steel plate 2 and the second steel plate 3. The protrusions on both sides of the sealing plate 501 are inserted into the sealing strips 502 on the inner walls of the first steel plate 2 and the second steel plate 3, and the sealing contact area is enhanced by the concave-convex fit. At the same time, the first bolt 503 connects and fixes the sealing plate 501 to the first steel plate 2 and the second steel plate 3 by thread, further improving the sealing performance. This can effectively prevent rainwater, dust and other impurities from seeping into the interior of the structure from the seismic joint 4, and avoid corrosion of the steel beam 1 and connecting parts.

[0038] When encountering dynamic loads from natural disasters such as earthquakes, the load is transferred to the deformation mechanism 6 through the first steel plate 2, the second steel plate 3, and the steel beam 1. At this time, the energy-dissipating shear plate 601 becomes the core of the load and will enter the plastic deformation stage first under the load, absorbing and dissipating a large amount of seismic energy through shear plastic deformation. During this process, the steel beam 1 and the steel plate structure, due to their higher yield strength compared to the deformation mechanism 6, remain in an elastic working state, avoiding irreversible damage.

[0039] When the plastic deformation of the energy-consuming shear plate 601 reaches a preset threshold, the inverted frustum-shaped upper limit block 703 and the inverted frustum-shaped groove of the lower limit block 702 precisely engage and contact, using their geometric compatibility to limit further relative displacement between the first steel plate 2, the second steel plate 3, and the steel beam 1. The limiting effect of the upper limit block 703 and the lower limit block 702 in the limiting mechanism 7 can prevent structural instability caused by excessive deformation of the deformation mechanism 6, providing secondary safety assurance for the main structure.

[0040] The core components that need to be replaced after the earthquake are the energy-consuming shear plate 601 of the deformation mechanism 6 and the sealing plate 501 of the sealing mechanism 5. The steel beam 1, the steel plate structure and the limiting mechanism 7 can continue to be used because they were not damaged.

[0041] By removing the second bolt 604 from the upper mounting plate 602 and lower mounting plate 603 of the deformation mechanism 6, the failed energy-dissipating shear plate 601 can be quickly removed. After replacing it with a new component of the same specification and retightening the second bolt 604, the support and energy-dissipating functions can be restored. At the same time, by removing the first bolt 503 connecting the sealing plate 501 and the steel plate structure, replacing the sealing plate 501, and re-inserting the sealing strip 502, the sealing performance of the seismic joint 4 can be restored.

[0042] After replacing the energy-consuming shear plate 601 and the sealing plate 501, the entire floor slab connection structure is restored to its initial working state. There is no need to replace or repair the main components such as steel beam 1 and steel plate structure, which greatly reduces repair costs and construction time.

Claims

1. A floor slab connection structure, characterized in that, include: The steel beam and steel plate structure includes a deformation mechanism between the second flange of the steel beam and the steel plate structure. This mechanism supports the steel plate structure and dissipates a large amount of seismic energy through its own plastic deformation, protecting the steel beam and floor slab from serious damage, serving as the first safety guarantee. A limit mechanism is also provided between the first flange of the steel beam and the steel plate structure to prevent excessive deformation, serving as the second safety guarantee.

2. The floor slab connection structure according to claim 1, characterized in that: The steel plate structure includes steel plates made of low-alloy high-strength structural steel, and seismic joints are provided between multiple parallel steel plates.

3. The floor slab connection structure according to claim 2, characterized in that: A sealing mechanism is provided at the seismic joint.

4. A floor slab connection structure according to claim 3, characterized in that: The sealing mechanism includes a sealing plate with downward protrusions on both sides to form downward protrusions; a sealing groove is provided on the steel plate, and the protrusions on both sides of the sealing plate cooperate with the sealing groove.

5. A floor slab connection structure according to claim 4, characterized in that: The compressive and shear strength of the closed plate is less than that of the steel plate.

6. A floor slab connection structure according to claim 4, characterized in that: The inner wall of each sealing groove is provided with a sealing strip.

7. A floor slab connection structure according to claim 1, characterized in that: Multiple deformation mechanisms are arranged along the length of the steel beam and symmetrically positioned on both sides of the steel beam; each deformation mechanism includes an arc-shaped energy-dissipating shear plate, the upper end of which is connected to the steel plate structure and the lower end of which is connected to the second flange of the steel beam.

8. A floor slab connection structure according to claim 7, characterized in that: The energy-consuming shear plate is made of low yield point steel.

9. A floor slab connection structure according to claim 1, characterized in that: The limiting mechanism includes a fixed plate, the lower surface of which is fixedly connected to the steel beam, and a lower limiting block fixedly connected to the upper surface of the fixed plate; multiple lower limiting blocks are arranged along the length of the steel beam; an upper limiting block is movably inserted into the lower limiting block, and the upper surface of the upper limiting block is fixedly connected to the steel plate structure; under normal conditions, there is a gap between the upper limiting block and the lower limiting block; when the plastic deformation of the deformation mechanism reaches a preset threshold, the upper limiting block and the lower limiting block are precisely fitted and contacted.

10. A floor slab connection structure according to claim 9, characterized in that: The lower limit block is shaped like a frustum, and an inverted frustum-shaped groove is provided inside the lower limit block. The upper limit block is also shaped like an inverted frustum, which matches the shape of the inverted frustum groove.

Images