Two-way deformation lightweight modular cover plate with reserved deformation for seismic trench

Abstract

This invention discloses a lightweight modular cover plate with pre-deformable bidirectional deformation for seismic isolation trenches, comprising: a base, disposed on structures on both sides of the width direction of the seismic isolation trench; and a cover plate assembly, disposed above the seismic isolation trench, hinged at both ends to the base, comprising a first rod, a second rod, and supporting rods. The first rod spans the seismic isolation trench and is telescopically connected to the second rod via a sleeve connection. The opposite ends of the first and second rods are respectively connected to the base. Multiple sets of supporting rods are arranged side by side along the length direction of the first rod, and the supporting rods are movably connected to the first rod. This application cleverly utilizes the unstable characteristics of parallelograms through the collaborative design of pin-hinged nodes and flexible cover plate assemblies. By linking the rods together, telescopic expansion between the rods is achieved, enabling bidirectional adaptive displacement of the cover plate in both horizontal and vertical directions. This design prevents upward tilting during earthquakes, posing a threat to personnel safety, and has strong load-bearing capacity, meeting the needs of pedestrian and vehicle passage.

Description

Technical Field

[0001] This invention relates to the technical field of seismic resistance in building engineering, and in particular to a lightweight modular cover plate with pre-deformation capacity for seismic isolation trenches. Background Technology

[0002] In the field of seismic resistance technology for building engineering, seismic isolation trenches are a key component of seismically isolated buildings. Their purpose is to accommodate the deformation of the seismically isolated building during an earthquake, preventing it from colliding with the foundation during an earthquake. A cover plate is generally installed on the top of the seismic isolation trench. Under normal use, the cover plate should possess a certain strength and rigidity; during an earthquake, the cover plate should deform along with the seismically isolated building.

[0003] Chinese utility model patent application number 202322978058.0 discloses a retractable seismic isolation joint cover device, including a telescopic component and connecting members. The connecting members include strips or displacement boxes. The connecting members are used to connect with building components on both sides of the seismic isolation joint. The telescopic component is disposed between two symmetrically arranged connecting members. When the retractable cover is not subjected to external force, the plane on which the telescopic component is located is a horizontal plane. The two ends of the telescopic component are rotatably connected to the two connecting members respectively. When the retractable cover is subjected to external force, the telescopic component rotates so that its plane is an inclined plane or a vertical plane. The telescopic component can extend and retract in both the length and width directions of its plane. The retractable seismic isolation joint cover device of this utility model can generate telescopic and rotational deformation in a horizontal plane, and can also generate telescopic and rotational deformation on an inclined plane outside the horizontal plane, so as to reduce the problem of the seismic isolation joint being blocked and unable to move freely due to the damage of the cover during an earthquake. The above-mentioned solution involves placing the cover plate between the two buildings. During an earthquake, the cover plate can expand and contract in the horizontal plane. Although this can solve the problem of the cover plate tilting upwards during an earthquake, the cover plate has poor load-bearing capacity and is not suitable for situations where people or vehicles pass through.

[0004] Chinese invention patent application number 202411644495.1 discloses a lifting and sliding type seismic isolation trench cover structure and its usage method. During an earthquake, the seismic isolation device impacts the lower end of the first rod and the front end of the optical axis, pushing the lower end of the first rod to move synchronously with the optical axis along the circular through-hole of the fixed linear bearing and the circular through-hole of the fixed frame. The X-shaped frame of the cross lifting mechanism gradually changes from a large angle to a small angle, driving the upper cover plate to lift upwards without detaching from the optical axis, thus realizing the displacement space required by the seismic isolation device under seismic force. While providing displacement space, it ensures that the cover plate will not fall into the seismic isolation trench, and will not affect the normal function of the seismic isolation device. It can meet the daily load-bearing requirements and can also maintain structural integrity and no damage after an earthquake. It can be reused multiple times after being manually reset, without the risk of falling into the seismic isolation trench. In contrast, the cover plate of the above solution will tilt upwards during an earthquake, threatening personnel safety, and has a low assembly rate and cumbersome installation.

[0005] To address the aforementioned issues, this application provides a lightweight modular cover plate with pre-deformable bidirectional deformation capacity for seismic isolation trenches. Summary of the Invention

[0006] This invention provides a lightweight modular cover plate with pre-deformable bidirectional deformation capacity for seismic isolation trenches, which solves the above-mentioned problems.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] The present invention relates to a lightweight modular cover plate for seismic isolation trenches with pre-deformation capacity and bidirectional deformation, comprising:

[0009] The base is set on the structure on both sides of the width of the seismic isolation trench;

[0010] The cover plate assembly, located above the seismic isolation trench, is hinged to the base at both ends and can adaptively deform in the plane under seismic action. It includes a first member, a second member, and a support member. The first member spans the seismic isolation trench and is telescopically connected to the second member by a sleeve. The opposite ends of the first and second members are respectively connected to the base. Multiple sets of support members are arranged side by side along the length of the first member, and the support members are movably connected to the first member. The connection has a deformation space along the length of the support member, and the support member can move within the allowable range of the deformation space.

[0011] The present invention provides a pre-deformable, bidirectional, lightweight modular cover plate for seismic isolation trenches. Furthermore, the base includes an angle steel fixed to the structure, and two ear plates are fixed on the same side of the angle steel. A connecting plate is hinged between the two ear plates by a pin, and the connecting plate is fixedly connected to the corresponding first or second rod.

[0012] The present invention provides a lightweight modular cover plate with pre-deformation capacity for the seismic isolation trench, and further, a deformation gap is provided between the connecting plate and the ear plate above it.

[0013] The present invention provides a lightweight modular cover plate with pre-deformable bidirectional deformation for seismic isolation trenches, wherein the deformation gap is 0.5~3 mm.

[0014] The present invention provides a lightweight modular cover plate for seismic isolation trenches with reserved deformation capacity and bidirectional deformation. Furthermore, L-shaped fasteners with openings facing the first member are fixed at both ends of the support rod along its length direction and on the bottom surface of the support rod. The first member has a straight ear plate on its side. The horizontal part of the L-shaped fastener is fastened to the bottom surface of the straight ear plate. A deformation space is provided between the cantilever end of the straight ear plate and the vertical part of the L-shaped fastener.

[0015] The present invention provides a lightweight modular cover plate with pre-deformation capacity for the seismic isolation trench. Furthermore, the second member is provided with multiple support members at intervals, the support members are movably connected to the second member, and there is a horizontal deformation space between the support members and the second member.

[0016] The present invention provides a lightweight modular cover plate with pre-deformation capacity for the seismic isolation trench. Furthermore, ropes are connected between adjacent support rods on the second rod, and ropes are connected between the support rods at the sleeve ends of the second rod and the first rod.

[0017] The present invention provides a pre-deformable, bidirectional, lightweight modular cover plate for seismic isolation trenches. Furthermore, the cover plate assembly also includes a steel cover plate disposed on the side of the second member. The steel cover plate covers the support member on the second member. The end of the steel cover plate near the base is provided with a folding plate, which is fastened to the side of the base away from the second member.

[0018] The present invention provides a lightweight modular cover plate with a pre-deformable bidirectional deformation capacity for the seismic isolation trench. Furthermore, the length of the cover plate assembly is at least three times the width of the seismic isolation trench, and the cover plate assembly has at least twice the width of the seismic isolation trench on one side of the seismic isolation trench.

[0019] The present invention provides a lightweight modular cover plate with a pre-deformable bidirectional deformation capacity for the seismic isolation trench. Furthermore, the first member spans the seismic isolation trench by at least one times the width of the seismic isolation trench.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This application utilizes the instability of parallelograms by designing a pin-hinged node and a flexible cover plate assembly in collaboration. Through the expansion and contraction and linkage between the members, the cover plate achieves bidirectional adaptive displacement in both horizontal and vertical directions. Seismic energy is absorbed through the deformation of the reserved isolation trench and the graded dissipation mechanism of the linkage movement of the members. The energy absorption rate is high, and the structure is not easily damaged due to displacement restriction during an earthquake.

[0022] 2. This application uses prefabricated cover plate units, which can be directly connected to the base pins on site. This modular installation results in a high assembly rate and facilitates on-site construction.

[0023] 3. During an earthquake, the risk of the cover plate tilting upwards is completely eliminated through a planar motion mechanism, ensuring the safety of personnel evacuation;

[0024] 4. Through the linkage between the rods, the expansion and contraction between the rods are realized, effectively controlling the deformation trajectory and displacement. With the cooperation of multiple sets of parallel support rods, the support rods act as secondary keels of the rods during normal use to meet the needs of people and vehicles passing through; during earthquakes, relative displacement occurs, coordinating with the deformation of the cover plate assembly.

[0025] 5. High-strength pins are used in conjunction with self-lubricating bearings to reduce the coefficient of friction, ensure in-plane rotation, and a deformation clearance is provided to enable minute out-of-plane rotation of the base and eliminate installation errors;

[0026] 6. High reliability during earthquakes: The reserved width of the seismic isolation trench ensures that the cover plate will not warp or deform during earthquakes by consuming the reserved deformation amount, thus ensuring that the cover plate does not threaten personnel safety during the evacuation process during earthquakes.

[0027] 7. This cover plate combines high seismic isolation efficiency, ease of construction, and environmental friendliness, and can be widely used in narrow walkways, flexible connections between seismic-isolated buildings and elevators, and connections between seismic-isolated buildings and the outdoors. This new cover plate provides an innovative solution for improving the seismic performance of infrastructure.

[0028] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a planar schematic diagram of the cover plate unit of the present invention;

[0030] Figure 2 for Figure 1 Sectional view of AA;

[0031] Figure 3 This is a schematic diagram showing the connection between the support rod and the first rod of the present invention;

[0032] Figure 4 This is a schematic diagram of the base structure of the present invention;

[0033] Figure 5 This is a deformed diagram of the cover plate unit of the present invention;

[0034] Figure 6 This is a deformation diagram of the multi-span cover plate unit of the present invention;

[0035] Figure 7 This is a schematic diagram of the connection structure between the second rod and the supporting rod of the present invention.

[0036] Figure label:

[0037] 1. Cover plate unit; 2. Base; 2.1 Angle steel; 2.2 Ear plate; 2.3 Pin; 2.4 Connecting plate; 2.5 Deformation gap; 2.6 Folding plate; 3. Cover plate assembly; 3.1 First rod; 3.2 Second rod; 3.3 Supporting rod; 3.4 Steel cover plate; 3.5 L-shaped fastener; 3.6 Straight ear plate; 3.7 Deformation space; 3.8 Rope; 4. Vibration isolation trench; 5. Friction pair; 6. U-shaped profile. Detailed Implementation

[0038] like Figures 1-7As shown, the present invention discloses a lightweight modular cover plate with reserved deformation capacity for seismic isolation trenches, comprising multiple sets of cover plate units 1 arranged along the length of the seismic isolation trench 4. Each set of cover plate units 1 includes a base 2 and a cover plate assembly 3. The base 2 is located on the structure on both sides of the width of the seismic isolation trench 4. The cover plate assembly 3 is a parallelogram structure and is located above the seismic isolation trench 4. Its two ends are respectively hinged to the base 2. During an earthquake, the cover plate assembly 3 can move in-plane to avoid the risk of the cover plate tilting up.

[0039] The cover plate assembly 3 includes a first rod 3.1, a second rod 3.2, a support rod 3.3, and a steel cover plate 3.4. In this embodiment, two first rods 3.1 are arranged in parallel. The first rod 3.1 spans the seismic isolation trench 4 and is telescopically connected to the second rod 3.2 by a sleeve. The opposite ends of the first rod 3.1 and the second rod 3.2 are respectively hinged to the base 2. Multiple sets of support rods 3.3 are arranged side by side along the length direction of the first rod 3.1. The support rods 3.3 are movably connected to the first rods 3.1. The connection has a deformation space 3.7 arranged along the length direction of the support rod 3.3. The support rod 3.3 can move within the allowable range of the deformation space 3.7, so that the support rod 3.3 can undergo relative displacement when moving in the plane of the cover plate assembly 3, thereby completing the in-plane movement of the cover plate assembly 3.

[0040] At both ends of the support rod 3.3 along its length, L-shaped fasteners 3.5 with openings facing the first rod 3.1 are fixed to the bottom surface of the support rod 3.3. The first rod 3.1 has a straight ear plate 3.6 on its side. The horizontal part of the L-shaped fastener 3.5 is fastened to the bottom surface of the straight ear plate 3.6. A deformation space 3.7 is provided between the cantilever end of the straight ear plate 3.6 and the vertical part of the L-shaped fastener 3.5.

[0041] Multiple support members 3.3 are spaced apart on the second member 3.2. The support members 3.3 serve as the secondary keel of the steel cover plate 3.4, mainly to improve the strength of the steel cover plate 3.4. The support members 3.3 are movably connected to the second member 3.2. Specifically, a U-shaped profile is fixed on the bottom surface of the support member, and the second member is fitted inside the U-shaped profile. There is a deformation space 3.7 between the second member and the U-shaped profile in the horizontal direction.

[0042] A rope 3.8 is connected between adjacent support rods 3.3 on the second rod 3.2, and a rope 3.8 is connected between the support rod 3.3 at the sleeve end of the second rod 3.2 and the first rod 3.1. In this embodiment, the rope 3.8 is connected to the side of the support rod 3.3, and its main function is to prevent the first rod 3.1 and the second rod 3.2 from separating by sleeve connection.

[0043] The base 2 includes an angle steel 2.1, and two ear plates 2.2 are fixedly installed on the same side of the angle steel 2.1. A connecting plate 2.4 is hinged between the two ear plates 2.2 by a pin 2.3. The connecting plate 2.4 is fixedly connected to the corresponding first rod 3.1 or second rod 3.2.

[0044] A deformation gap 2.5 is provided between the connecting plate 2.4 and the ear plate 2.2 above it. The deformation gap 2.5 is 0.5~3 mm. The deformation gap 2.5 is set to enable the base 2 to rotate slightly out of the plane and eliminate installation errors.

[0045] The steel cover plate 3.4 is placed on the support rod 3.3 on the second rod 3.2. The end of the steel cover plate 3.4 near the base 2 is provided with a folding plate 2.6. The folding plate 2.6 is fastened to the side of the angle steel 2.1 away from the second rod 3.2. The folding plate 2.6 and the angle steel 2.1 are connected by welding. When the cover plate assembly 3 moves in the plane, the position of the steel cover plate 3.4 remains unchanged. The steel cover plate 3.4 mainly flattens the cover plate structure and at the same time restrains the vertical deformation of the support rod that causes misalignment. Furthermore, the length of the cover plate assembly 3 is at least three times the width of the seismic isolation trench 4, and the cover plate assembly 3 is provided on one side of the seismic isolation trench 4 at least twice the width of the seismic isolation trench 4. The first member 3.1 spans the seismic isolation trench 4 at least once the width of the seismic isolation trench 4. In this embodiment of the application, the length of the cover plate assembly 3 is three times the width of the seismic isolation trench 4, the cover plate assembly 3 is provided on one side of the seismic isolation trench 4 at twice the width of the seismic isolation trench 4, and the first member 3.1 spans the seismic isolation trench 4 at once the width of the seismic isolation trench 4. With the above settings, the reliability during the earthquake is high, the width of the seismic isolation trench 4 is reserved, and the cover plate will not be warped or deformed during the earthquake by consuming the reserved deformation amount, thereby ensuring that the cover plate does not threaten the safety of personnel during the evacuation process during the earthquake.

[0046] Furthermore, a friction pair is provided at the contact point between the first rod and the ground. The friction pair can be set continuously or at intervals. The function of the friction pair 5 is to reduce the friction between the first rod 3.1 and the ground, so as to facilitate planar rotation. In the embodiment of this application, the friction pair 5 is a polytetrafluoroethylene plate, but it can also be other plates that reduce friction.

[0047] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A lightweight modular cover plate with pre-deformation capability for seismic isolation trenches, characterized in that: include: The base (2) is set on the structure on both sides of the width direction of the seismic isolation trench (4); The cover plate assembly (3) is located above the seismic isolation trench (4) and is hinged to the base (2) at both ends. It can adaptively deform in the plane under seismic action. It includes a first rod (3.1), a second rod (3.2) and a support rod (3.3). The first rod (3.1) spans the seismic isolation trench (4) and is telescopically connected to the second rod (3.2) by a sleeve. The opposite ends of the first rod (3.1) and the second rod (3.2) are respectively connected to the base (2). The support rod (3.3) is arranged in multiple sets along the length direction of the first rod (3.1) and is movably connected to the first rod (3.1). The connection has a deformation space (3.7) arranged along the length direction of the support rod (3.3). The support rod (3.3) can move within the allowable range of the deformation space (3.7). At both ends of the support rod (3.3) along its length, L-shaped fasteners (3.5) with openings facing the first rod (3.1) are fixed to the bottom surface of the support rod (3.3). The first rod (3.1) has a straight ear plate (3.6) on its side. The horizontal part of the L-shaped fastener (3.5) is fastened to the bottom surface of the straight ear plate (3.6). A deformation space (3.7) is provided between the cantilever end of the straight ear plate (3.6) and the vertical part of the L-shaped fastener (3.5). The second rod (3.2) is provided with multiple support rods (3.3) at intervals. The support rods (3.3) are movably connected to the second rods (3.2). A U-shaped profile (6) is fixed to the bottom surface of the support rod (3.3). The second rod (3.2) is fitted inside the U-shaped profile (6), and there is a deformation space (3.7) between the second rod (3.2) and the U-shaped profile (6) in the horizontal direction. The first member (3.1) spans the isolation trench (4) by at least one times the width of the isolation trench (4).

2. The pre-strained bi-directional deformation lightweight modular cover slab for seismic trench of claim 1, wherein, The base (2) includes an angle steel (2.1) fixed to the structure. Two ear plates (2.2) are fixed on the same side of the angle steel (2.1). A connecting plate (2.4) is hinged between the two ear plates (2.2) by a pin (2.3). The connecting plate (2.4) is fixedly connected to the corresponding first rod (3.1) or second rod (3.2).

3. The pre-strained bi-directional deformation lightweight modular cover slab for seismic trench of claim 2, characterized in that, A deformation gap (2.5) is provided between the connecting plate (2.4) and the ear plate (2.2) above it.

4. The pre-strained bi-directional deformation lightweight modular cover slab for seismic trench of claim 3, characterized in that, The deformation gap (2.5) is 0.5~3 mm.

5. The pre-strained bi-directional deformation lightweight modular deck for seismic trench of claim 1, wherein, A rope (3.8) is connected between adjacent support members (3.3) on the second member (3.2), and a rope (3.8) is connected between the support member (3.3) at the sleeve end of the second member (3.2) and the first member (3.1).

6. The pre-strained bi-directional deformation lightweight modular deck for seismic trench of claim 1, wherein, The cover plate assembly (3) further includes a steel cover plate (3.4) disposed on the side of the second rod (3.2). The steel cover plate (3.4) covers the support rod (3.3) on the second rod (3.2). The end of the steel cover plate (3.4) near the base (2) is provided with a folding plate (2.6). The folding plate (2.6) is fastened to the side of the base (2) away from the second rod (3.2).

7. The pre-deformable, lightweight modular cover plate with reserved deformation capacity for seismic isolation trenches according to any one of claims 1-6, characterized in that, The length of the cover plate assembly (3) is at least three times the width of the seismic isolation trench (4), and the cover plate assembly (3) is provided on one side of the seismic isolation trench (4) at least twice the width of the seismic isolation trench (4).

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