A resetting type ceiling restraint with tension spring

Abstract

This invention provides a resetting type ceiling constraint component with a tension spring; comprising: a fastener (3), a tension spring (4), a lifting eye screw (5-1), a lifting eye bolt (5-2), and a lifting eye nut (5-3); one end of the tension spring (4) is connected to the fastener (3) and the main keel (1) through the lifting eye nut (5-3) and the lifting eye of the lifting eye bolt (5-2), and the other end is connected to the side keel (2) and the boundary through the lifting eye screw (5-1), and is arranged at a 30° angle in the horizontal plane; the web of the main keel (1) is nested in the reserved space of the web of the fastener (3). This invention adds a tension spring component, which enables the node to absorb part of the seismic energy during an earthquake, reducing the impact on the ceiling system; at the same time, the tension spring helps to reduce the displacement of the side node, ensure its stability, and effectively reduce the shaking and deformation of the node, thereby preventing its damage; this invention not only strengthens the integrity of the node and the seismic resistance of the structure, but also makes the overall structure more stable.

Description

Technical Field

[0001] This invention relates to the field of ceiling restraint components; and more particularly to a reset type ceiling restraint component with a tension spring. Background Technology

[0002] Ceiling systems, as an important non-structural system, typically consist of joists, vertical supports, and panels. They not only beautify the interior environment and conceal overhead pipes, but also provide thermal insulation, sound insulation, and fire resistance, enhancing indoor comfort and safety. Therefore, ceiling systems are widely used in both public and residential buildings. Boundary conditions significantly impact the seismic performance of ceilings. Traditional ceiling edge joints are relatively simple, initially consisting of the main joists directly overlapping the edge joists without any constraints, resulting in low load-bearing capacity. During an earthquake, the ground motion is amplified by the building's main structure and transmitted to the ceiling system. The main joists can easily slip off the edge joists and be damaged. Simultaneously, the slipped main joists can cause significant movement or damage to the main-secondary joist joints, potentially leading to the failure and collapse of the entire ceiling system. Adding fasteners improves the seismic performance of the edge joints to some extent. However, due to the lack of automatic reset function in the ceiling system, it cannot return to its original position on its own. After an earthquake, the residual deformation of the fasteners is too large, which may still cause the ceiling panels to fall and be damaged. Furthermore, the post-earthquake repair of the ceiling system is inconvenient and costly, and the safety and economy of the system are not fully guaranteed.

[0003] Therefore, in order to solve the above problems, there is an urgent need for a ceiling connection component to reduce the risk of damage to the connection point between the main keel and the edge keel during an earthquake, which is of great significance to engineering practice. Summary of the Invention

[0004] The purpose of this invention is to provide a reset type ceiling constraint member with a tension spring.

[0005] This invention is achieved through the following technical solution:

[0006] This invention relates to a ceiling restraint component with a tension spring return type, comprising: fastener 3, tension spring 4, eye bolt 5-1, eye bolt 5-2, and eye nut 5-3;

[0007] Among them, fastener 3 is composed of a web with a T-shaped reserved space in the center and a flange extending from the end of the web;

[0008] The bending area of ​​the web of fastener 3 is provided with a groove 3-1, and the eye bolt 5-2 and eye nut 5-3 can pass through the groove 3-1 for connection and slide up and down in the groove 3-1;

[0009] One end of the tension spring 4 is connected to the main keel 1 and fastener 3 via eye bolt 5-2, eye nut 5-3, and eye screw 5-1, and is arranged at a 30° angle in the horizontal plane.

[0010] The web of the main keel 1 can be nested precisely in the space reserved in the web of the fastener 3.

[0011] Preferably, the flange is disposed on one side of the top of the web of the fastener 3.

[0012] Preferably, the flange is provided with an outer row of screw holes 3-2 and an inner row of screw holes 3-3; the screws in the outer row of screw holes 3-2 are directly connected to the boundary, and the screws in the inner row of screw holes 3-3 are fixedly connected to the boundary through the side keel 2.

[0013] Preferably, the fastener 3 is fixedly connected to the main keel 1 and the main keel 1 by means of eye bolt 5-2 and eye nut 5-3 passing through its web groove 3-1.

[0014] Preferably, one end of the tension spring 4 is connected to the main keel 1 and fastener 3 via eye bolt 5-2, eye nut 5-3, and eye bolt 5-1, while the other end is fixedly connected to the side keel 2 via eye bolt 5-1.

[0015] Preferably, there are two tension springs 4, which are symmetrically arranged on both sides of the web of the fastener 3.

[0016] More preferably, the calculation of the stiffness K of the connection node formed by the ceiling constraint member and the main keel 1 and the edge keel 2 mentioned above includes two stages:

[0017] (I) Stage where only tension spring 4 is in action: When the force is small, the eye bolt 5-2 moves freely within the groove 3-1, and the entire force is borne by the tension spring 4. At this time, the stiffness of the node satisfies:

[0018]

[0019] in:

[0020]

[0021] In the formula, F 合 The total load borne by the structure is represented by F, the tensile force borne by the tension spring is represented by ΔX, the deformation of the tension spring is represented by θ, and the angle between the spring and the side keel is represented by θ. One end of the tension spring is connected to the eye of the eye bolt or eye nut, and the other end is connected to the side keel through the eye screw. The two tension springs are arranged symmetrically about the main keel.

[0022] (II) Stage of joint action of fastener 3 and tension spring 4: As the tension increases, the elongation of tension spring 4 increases until it reaches its maximum elongation. Subsequently, the web of the fastener begins to deform. Therefore, the stiffness calculation of the connection node needs to consider the stiffness of the fastener. At this time, the stiffness of the node satisfies:

[0023]

[0024] In the formula, E is the elastic modulus of the fastener web, A is the cross-sectional area of ​​the fastener web, L is the length of the fastener web, and ΔX max θ represents the maximum extension of spring 4. max This represents the maximum value of the angle formed by the tension spring 4 and the side keel 2; all other symbols are the same as in the above formula.

[0025] The present invention has the following advantages:

[0026] (1) This node is equipped with eye bolts, eye nuts, eye screws and tension springs. The hooks at both ends of the spring are connected to the eye bolts. When the main keel is axially displaced, the eye bolt will slide along the groove. The spring angle changes with the position of the eye bolt in the fastener groove in the horizontal plane, which can increase its ultimate deformation capacity. Therefore, it can reduce the fatigue damage of the ceiling keel and extend its service life.

[0027] (2) In this invention, a tension spring component is added to the assembly node, enabling the node to absorb some of the seismic energy during an earthquake, thereby reducing the impact on the ceiling system. At the same time, the good elastic recovery ability of the tension spring helps to reduce the displacement of the edge node, ensure its stability, and effectively reduce the shaking and deformation of the node, thereby preventing damage to the ceiling caused by excessive displacement due to earthquakes.

[0028] (3) When the present invention is used to assemble nodes, the main keel and the side keel, the main keel and the fastener, the side keel and the fastener, the side keel and the boundary, and the fastener and the boundary are all connected by bolts or screws, which strengthens the integrity of the node and the seismic resistance of the structure, making the structure more stable and having good application prospects. Attached Figure Description

[0029] Figure 1 This is an overall effect diagram of the ceiling restraint component installed in the ceiling system using the present invention;

[0030] Figure 2 This is a front view of the ceiling restraint component of the present invention after installation with the main keel and the edge keel;

[0031] Figure 3 This is a top view of the ceiling restraint component of the present invention after installation with the main keel and the edge keel;

[0032] Figure 4This is a detailed drawing of the holes that need to be drilled before installing the ceiling restraint components, main keel, and edge keel of this invention;

[0033] Figure 5 This is an exploded view of the tension spring and connecting parts of the ceiling constraint component of the present invention;

[0034] Figure 6 This is a monotonic loading curve of the load-displacement at the nodes of the ceiling constraint component and the main keel and the edge keel after installation of the present invention;

[0035] Figure 7 This is a load-displacement hysteresis loading curve of the joint between the ceiling constraint component and the main keel and the edge keel after installation of the present invention;

[0036] Attached image captions:

[0037] 1 is the main keel, 2 is the side keel, 3 is the fastener, 4 is the tension spring, 1-1 is the main keel bolt hole, 2-1 is the side keel bolt hole, 2-2 is the side keel screw hole, 2-3 is the side keel screw hole; 3-1 is the sliding groove; 3-2 is the outer row screw hole; 3-3 is the inner row screw hole, 5-1 is the eye bolt, 5-2 is the eye bolt, 5-3 is the eye nut, 5-4 is the screw, and 5-5 is the bolt. Detailed Implementation

[0038] The present invention will now be described in detail with reference to specific embodiments. It should be noted that the following embodiments are merely further illustrations of the present invention, but the scope of protection of the present invention is not limited to the following embodiments.

[0039] Example

[0040] This embodiment relates to a reset-type ceiling constraint component with a tension spring, see... Figure 2 , 3 As shown, it includes: fastener 3, tension spring 4, eye screw 5-1, eye bolt 5-2, eye nut 5-3;

[0041] Among them, fastener 3 is composed of a web with a T-shaped reserved space in the center and a flange extending from the end of the web;

[0042] The bending area of ​​the web of fastener 3 is provided with a groove 3-1, and the eye bolt 5-2 and eye nut 5-3 can pass through the groove 3-1 for connection and slide up and down in the groove 3-1;

[0043] One end of the tension spring 4 is connected to the main keel 1 and fastener 3 via eye bolt 5-2 and eye nut 5-3, and the other end is connected to the side keel 2 via eye screw 5-1, and is arranged at a 30° angle in the horizontal plane; the web of the main keel 1 can be nested in the space reserved in the web of the fastener 3.

[0044] After the reset type ceiling constraint with tension spring is connected to the main keel 1 and the side keel 2, a main keel-side keel connection node is formed. The main keel-side keel connection node is connected to the boundary by fastener 3 and multiple screws or bolts on the side keel 2.

[0045] like Figure 2 , Figure 3 As shown, it includes a main keel 1 arranged longitudinally and a side keel 2 arranged laterally; the main keel 1 and the side keel 2 are connected by fasteners 3 and tension springs 4, and the tension springs 4 are arranged at a 30° angle in the horizontal plane.

[0046] like Figure 4 As shown, the present invention has bolt holes 1-1 on the web of the main keel 1, bolt holes 2-1 (connected to the boundary), screw holes 2-2 (connected to the eye bolts) and screw holes 2-3 (connected to the fasteners) on the side keel 2, and a sliding groove 3-1, an outer row of screw holes 3-2 and an inner row of screw holes 3-3 on the fastener 3.

[0047] like Figure 5 As shown, one end of the tension spring 4-1 is connected to the main keel 1 through the lug 3-1 via the eye bolt 5-2 and eye nut 5-3, and the other end is fixedly connected to the side keel 2 via the eye screw 5-1; the side keel 2 is connected to the boundary via the eye screw 5-1, bolt 5-5, and screw 5-4, and the fastener 3 is connected to the boundary via the screw 5-4.

[0048] See the overall effect diagram of the ceiling restraint component of this invention installed in the ceiling system. Figure 1 As shown.

[0049] Figure 6 This is a load-displacement monotonic curve of the axial performance of the main keel-side keel node connected by the ceiling constraint component of the invention. For the side node with tension spring 4 in this invention, after the initial loading, due to the small applied load, the eye bolt 5-2 does not reach the end of the groove 3-1, and the entire load is borne by the tension spring 4. The node stiffness at this stage is equal to the sum of the stiffnesses of the two tension springs 4. As the load continues to increase, the eye bolt 5-2 collides with the fastener 3, and the fastener 3 gradually deforms, the node load increases, and the load is shared by the tension spring 4 and the fastener 3. At this time, the node stiffness is the sum of the tensile stiffness of the two tension springs 4 and the axial deformation stiffness of the fastener 3, until the load reaches the maximum shear bearing capacity of the web section of the main keel 1, the web section of the main keel 1 tears, and the load fluctuates. Compared with the side node structure without tension spring 4, under small displacements, the stiffness of the side node of the component of this invention is significantly improved, the bearing capacity is increased, and the seismic performance of the structure is enhanced.

[0050] Figure 7The figure shows the load-displacement hysteresis curves of the axial performance of the main keel-side keel node connected by the ceiling constraint component of the invention. It can be seen that under small loads, the tension spring 4 plays a major role, and the curve returns to the origin after unloading, indicating that the connection node can recover to its initial position. As the load gradually increases, the displacement of the tension spring 4 also gradually increases. When the lifting eye bolt 5-2 collides with the fastener 3, the fastener 3 begins to undergo plastic deformation, and the load is shared by the tension spring 4 and the fastener 3. After unloading, the residual displacement is very small, and overall, it can achieve the effect of enhancing the self-resetting performance of the node.

[0051] The main keel-side keel connection node formed after the ceiling constraint component of this invention is installed with the main keel and side keel is in normal working condition before an earthquake. The main keel 1 and side keel 2 are firmly connected to each other by eye bolts 5-1, eye bolts 5-2, eye nuts 5-3, tension springs 4, and other boundary constraints. The node is stable, and the tension spring 4 is in its original position, unaffected by external forces. When an earthquake occurs, the building structure is subjected to seismic motion, generating horizontal or vertical seismic forces. These seismic forces are transmitted to the main keel-side keel connection node. The tension spring 4 allows the main and side keels to deform to a certain extent under seismic forces. The tension spring 4 is elastic and can absorb and store external energy, allowing the node to undergo elastic deformation within a certain range, enhancing the node's stiffness and preventing damage. When the tension spring 4 deforms, it acts as a damper, gradually releasing the stored energy to slow the movement speed of the main keel 1 and side keel 2. This damping effect helps reduce the impact of earthquakes on the building structure, decreases the vibration amplitude, and thus improves the overall seismic performance of the structure. When the earthquake weakens or stops, the tension spring 4 will quickly return to its original position, restoring the main keel 1 and the side keel 2 to their initial state. This self-resetting ability allows the ceiling system to recover quickly after an earthquake, reducing the possibility of permanent structural deformation.

[0052] This invention provides a connection node between a ceiling constraint member with a tension spring return type and the main keel 1 and the edge keel 2, and its installation method is as follows:

[0053] Step 1: Make a hole 1-1 on the main keel 1, the diameter of which is the same as the width of the short side of the groove of the fastener 3;

[0054] Step 2: Reserve holes 2-1 for connection with the boundary on both sides of the side keel 2, reserve eye bolt holes 2-2 in the middle of the side keel 2, and reserve two reserved holes 2-3 on the inner side that are opposite to the screw holes 3-3 on the inner side of the fastener.

[0055] Step 3: Place and install the main keel 1, side keel 2, and fastener 3 in the specified positions. Use eye bolts 5-2 and eye nuts 5-3 to fix the fastener groove 3-1 to the reserved hole 1-1 position on the main keel 1.

[0056] Step 4: Bolt 5-5 passes through hole 2-1, and eye screw 5-1 passes through hole 2-2. Then, one end of tension spring 4 is connected to the eye on eye bolt 5-2 and eye nut 5-3, and the other end is connected to the eye on eye screw 5-1. Adjust tension spring 4 to be on the same horizontal plane to form the main keel-side keel connection node.

[0057] Step 5: Align the inner screw hole 3-3 of the fastener with the reserved screw hole 2-3 of the side keel 2, and fix it with screw 5-4. At the same time, use screw 5-4 to directly connect to the boundary through the outer screw hole 3-2.

[0058] The ceiling constraint component with tension spring return type involved in this invention is equipped with a tension spring connected to a lifting eye bolt. The hooks at both ends of the spring are connected to the lifting eye. When the main keel undergoes axial displacement, the lifting eye bolt slides along the slide groove. The spring angle changes with the position of the lifting eye bolt in the fastener slide groove in the horizontal plane, which can increase its ultimate deformation capacity, thereby reducing fatigue damage to the ceiling keel and extending its service life. The addition of the tension spring component allows the node to absorb some seismic energy during an earthquake, thereby reducing the impact on the ceiling system. At the same time, the good elastic recovery capacity of the tension spring helps to reduce the displacement of the edge node, ensure its stability, and effectively reduce the shaking and deformation of the node, thereby preventing damage to the ceiling caused by excessive displacement due to earthquakes. When used to assemble nodes, the main keel and edge keel, the main keel and fastener, the edge keel and fastener, the edge keel and boundary, and the fastener and boundary are all directly or indirectly connected by bolts or screws, which strengthens the integrity of the node and the seismic resistance of the structure, making the structure more stable and showing good application prospects.

[0059] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A return-type ceiling restraint with a tension spring, characterized by, Include: fastener (3), tension spring (4), eye bolt (5-2), eye nut (5-3), eye screw (5-1); Wherein, the fastener (3) is composed of a web with a T-shaped reserved space in the center and a flange extending from the end of the web; The bending area of the web of the fastener (3) is provided with a sliding groove (3-1), the eye bolt (5-2) and the eye nut (5-3) can be connected through the sliding groove (3-1) and slide up and down in the sliding groove (3-1); One end of the tension spring (4) is connected with the main keel (1) and the fastener (3) through the eye bolt (5-2) and the eye nut (5-3), and the other end is connected with the boundary through the eye screw (5-1) and the boundary, and is arranged at an angle of 30° in the horizontal plane; The web of the main keel (1) is nested in the reserved space of the web of the fastener (3); The flange is provided with outer row screw holes (3-2) and inner row screw holes (3-3); the screws of the outer row screw holes (3-2) are directly connected with the boundary, and the screws of the inner row screw holes (3-3) are fixedly connected with the boundary through the boundary keel (2); The calculation of the stiffness K of the connection joint composed of the main keel (1) and the boundary keel (2) includes two stages: (1) Only tension spring (4) action stage: when the force is small, the eye bolt (5-2) moves freely in the sliding groove (3-1), and the force is entirely borne by the tension spring (4), at this time the stiffness of the joint satisfies: ， Wherein: ， F = F + F 合 F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F + F F = F (2) Fastener (3) and tension spring (4) joint action stage: as the tension increases, the elongation of the tension spring (4) increases until the maximum elongation is reached, then the web of the fastener (3) begins to deform, so the stiffness of the connection joint needs to consider the stiffness of the fastener, at this time the stiffness of the joint satisfies: ， where E is the modulus of elasticity of the fastener web, A is the cross-sectional area of the fastener web, L is the length of the fastener web, AX max is the maximum tensile elongation of the tensile spring (4), θ max is the maximum value of the angle formed by the tensile spring (4) and the side keel (2), and the remaining symbols are the same as in the previous equation.

2. The return-to-davit restraint with tension spring of claim 1, wherein, The flange is arranged on one side of the top end of the web of the fastener (3).

3. The return-to-davit restraint with tension spring of claim 1, wherein, The fastener (3) is fixedly connected with the main keel (1) through the sliding groove (3-1) of the web of the fastener (3), the reserved hole (1-1) of the main keel (1) and the main keel (1) through the eye bolt (5-2) and the eye nut (5-3).

4. The return-to-davit restraint with tension spring of claim 1, wherein, One end of the tension spring (4) is connected with the main keel (1) and the fastener (3) through the eye bolt (5-2) and the eye nut (5-3), and the other end is fixedly connected with the boundary keel (2) through the eye screw (5-1).

5. The return-to-davit restraint with tension spring of claim 1 wherein, The number of the tension spring (4) is two, which are respectively arranged symmetrically on both sides of the web of the fastener (3).

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