Reset type suspended ceiling restraining piece with extension spring

Abstract

The invention provides a reset type suspended ceiling restraining piece with an extension spring. Comprising a fastener (3), an extension spring (4), a lifting ring screw (5-1), a lifting ring bolt (5-2) and a lifting ring nut (5-3), one end of the extension spring (4) is connected with the fastening piece (3) and the main keel (1) through the lifting ring nut (5-3) and the lifting ring of the lifting ring bolt (5-2), and the other end of the extension spring (4) is connected with the side keel (2) and the boundary through the lifting ring bolt (5-1) and is obliquely arranged at 30 degrees in the horizontal plane; and the web of the main keel (1) is nested in the web reserved space of the fastener (3). The extension spring component is additionally arranged, so that the node can absorb part of earthquake energy during an earthquake, and the impact on a suspended ceiling system is reduced; meanwhile, the extension spring is favorable for reducing the displacement of the side node, ensuring the stability of the side node and effectively reducing the shaking and deformation of the node, so that the node is prevented from being damaged; not only are the integrality and the structural shock resistance of the joint enhanced, but also the whole structure is more stable.

Description

Technical Field

[0001] The invention relates to the field of suspended ceiling restraints, and in particular to a reset type suspended ceiling restraint with a tension spring. Background Art

[0002] As an important non-structural system, the ceiling system is usually composed of keels, vertical supports and panels. It not only beautifies the indoor environment and hides the top pipelines, but also has the functions of heat preservation, heat insulation, sound insulation and fire prevention, which can improve the indoor comfort and safety. Therefore, the ceiling system is widely used in public buildings and civil buildings. Boundary conditions have a significant impact on the seismic performance of the ceiling. The traditional ceiling edge node structure is relatively simple. Initially, only the main keel was directly overlapped on the edge keel without any constraints, so the bearing capacity was low. When an earthquake occurs, the seismic motion is transmitted to the ceiling system through the amplification effect of the main structure of the building. The main keel of the ceiling can easily slide off the edge keel and be damaged. At the same time, the sliding main keel will cause the main keel-secondary keel node to move or be damaged significantly, which will cause the failure and collapse of the entire ceiling system. After the fasteners are attached, the seismic performance of the edge node is improved to a certain extent. However, since the ceiling system lacks an automatic reset function and cannot restore to its original position by itself, the residual deformation of the fasteners after the earthquake is too large, which will still cause the ceiling panels to fall and be damaged. In addition, the post-earthquake repair of the ceiling system is relatively inconvenient and costly, and the safety and economy of the system are not fully guaranteed.

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

[0004] The purpose of the invention is to provide a reset type ceiling restraint with a tension spring.

[0005] The present invention is achieved through the following technical solutions:

[0006] The present invention relates to a ceiling restraint with a tension spring reset type, 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;

[0007] 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;

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

[0009] One end of the tension spring 4 is connected to the main keel 1 and the fastener 3 through an eye bolt 5-2 and an eye nut 5-3, and the other end is connected to the side keel 2 through an eye screw 5-1, and is arranged obliquely at 30° in the horizontal plane;

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

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

[0012] Preferably, the flange member is provided with an outer row of screw holes 3-2 and an inner row of screw holes 3-3; the screws of the outer row of screw holes 3-2 are directly connected to the boundary, and the screws of 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 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 passing through its web slide groove 3-1.

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

[0015] Preferably, the number of the tension springs 4 is two, 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 restraint member and the main keel 1 and the side keel 2 mentioned above includes two stages:

[0017] (i) Only the tension spring 4 acts: When the acting force is small, the eyebolt 5-2 moves freely in the slide groove 3-1, and the acting force is entirely 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 represents the total load borne by the structure, F represents the tension borne by the tension spring, △X represents the deformation of the tension spring, and θ represents the angle between the spring and the side keel. One end of the tension spring is connected to the lifting ring of the eyebolt or eyenut, and the other end is connected to the side keel through the eye screw. The arrangement of the two tension springs is symmetrical about the main keel;

[0022] (ii) The stage of joint action of the fastener 3 and the tension spring 4: As the tension increases, the elongation of the tension spring 4 increases until it reaches the maximum elongation, and then 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] Where 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, △X max is the maximum stretch of the stretch spring 4, θ max is the maximum value of the angle formed by the tension spring 4 and the side keel 2, and the other symbols are the same as the above formula.

[0025] The present invention has the following advantages:

[0026] (1) This node is equipped with an eyebolt, an eyenut, and an eyescrew to connect the tension spring. The hooks at both ends of the spring are connected to the eyebolts respectively. When the main keel undergoes axial displacement, the eyebolt will slide along the slide groove. The angle of the spring changes with the position of the eyebolt 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.

[0027] (2) The present invention adds a tension spring component when assembling nodes, so that the nodes can absorb part of the earthquake 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 caused by an earthquake.

[0028] (3) When the present invention is used to assemble a node, 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, each component is connected by bolts or screws, which strengthens the integrity of the node and the structural seismic resistance, makes the structure more stable, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0030] Figure 2 It is a front view of the ceiling restraint of the present invention after being installed with the main keel and the side keel;

[0031] Figure 3 It is a top view of the ceiling restraint of the present invention after being installed with the main keel and the side keel;

[0032] Figure 4It is a detailed diagram of the holes that need to be opened before the ceiling restraint member and the main keel and the side keel are installed;

[0033] Figure 5 It is an exploded view of the tension spring and the connecting member of the ceiling restraint of the present invention;

[0034] Figure 6 It is a load-displacement monotonic loading curve diagram of the nodes after the ceiling restraint member of the present invention is installed with the main keel and the side keel;

[0035] Figure 7 It is a load-displacement hysteresis loading curve diagram of the nodes after the ceiling restraint member of the present invention is installed with the main keel and the side keel;

[0036] Figure annotation:

[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 slide groove; 3-2 is the outer row of screw holes; 3-3 is the inner row of screw holes, 5-1 is the eye screw, 5-2 is the eye bolt, 5-3 is the eye nut, 5-4 is the screw, and 5-5 is the bolt. DETAILED DESCRIPTION

[0038] The present invention is described in detail below in conjunction with specific embodiments. It should be noted that the following embodiments are only further descriptions of the present invention, but the protection scope of the present invention is not limited to the following embodiments.

[0039] Example

[0040] This embodiment relates to a reset type ceiling restraint with a tension spring, see Figure 2 , 3 As shown, it includes: 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;

[0041] 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;

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

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

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

[0045] like Figure 2 , Figure 3 As shown, it includes a longitudinally arranged main keel 1 and a transversely arranged side keel 2; 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 obliquely at 30° in the horizontal plane.

[0046] like Figure 4 As shown, the present invention has a bolt hole 1-1 on the web of the main keel 1, a bolt hole 2-1 (connected to the boundary), a screw hole 2-2 (connected to the eye screw) and a screw hole 2-3 (connected to the fastener) on the side keel 2, and a slide 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 eye bolt 5-2 and the eye nut 5-3 through the slide groove 3-1, and the other end is fixedly connected to the side keel 2 through the eye screw 5-1; the side keel 2 is connected to the boundary through the eye screw 5-1, the bolt 5-5, and the screw 5-4, and the fastener 3 is connected to the boundary through the screw 5-4.

[0048] The overall effect diagram of the ceiling restraint of the present invention installed in the ceiling system is shown in Figure 1 shown.

[0049] Figure 6 The load-displacement monotonic curve of the axial performance of the main keel-side keel node connected by the ceiling restraint of the invention. For the side node with the tension spring 4 in the present invention, after the loading starts, due to the small applied load, the eyebolt 5-2 does not reach the end of the slide groove 3-1, and the load is entirely borne by the tension spring 4. The node stiffness at this stage is equal to the sum of the stiffness of the two tension springs 4; as the load continues to increase, the eyebolt 5-2 collides with the fastener 3, the fastener 3 gradually deforms, the node load increases, and the load is borne by the tension spring 4 and the fastener 3 together. 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 is torn, and the load fluctuates. Compared with the side node structure without the tension spring 4 installed, under small displacement, the stiffness of the side node of the assembly of the present invention is significantly improved, the bearing capacity is improved, and the seismic performance of the structure is enhanced.

[0050] Figure 7The load-displacement hysteresis curve of the axial performance of the main keel-side keel node connected by the ceiling restraint of the invention is shown in FIG. It can be concluded that under the action of a small load, the tension spring 4 mainly plays a role, and the curve returns to the origin after unloading, indicating that the connection node can be restored to the initial position; when the load gradually increases, the displacement of the tension spring 4 also gradually increases. When the eyebolt 5-2 collides with the fastener 3, the fastener 3 begins to produce 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 generally speaking, the effect of enhancing the self-reset performance of the node can be achieved.

[0051] The main keel-side keel connection node formed by the ceiling restraint of the present invention after being installed with the main keel and the side keel, before the earthquake, the main keel-side keel connection node is in a normal working state, the main keel 1 and the side keel 2 are firmly connected to each other through the eye screw 5-1, the eye bolt 5-2, the eye nut 5-3, the tension spring 4 and other boundary constraints, the node is stable, the tension spring 4 is in the original position, and is not affected by external forces. When an earthquake occurs, the building structure will be affected by the ground vibration, generating horizontal or vertical earthquake effects, which will be transmitted to the main keel-side keel connection node, and the tension spring 4 allows the main side keel to deform to a certain extent under the action of the earthquake force. The tension spring 4 is elastic and can absorb and store external energy, so that the node produces elastic deformation within a certain range, enhances the node stiffness, and avoids damage. The tension spring 4 plays a shock-absorbing role when deformation occurs, and slows down the movement speed of the main keel 1 and the side keel 2 by gradually releasing the stored energy. This shock-absorbing effect helps to reduce the impact of the earthquake on the building structure and reduce the vibration amplitude, thereby improving the seismic performance of the overall 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 enables the ceiling system to recover quickly after an earthquake, reducing the possibility of permanent deformation of the structure.

[0052] The present invention provides a connection node formed by a ceiling restraint with a tension spring reset type and a main keel 1 and a side keel 2, and the installation method thereof is as follows:

[0053] Step 1: Reserve a hole 1-1 on the main keel 1, the diameter of which is consistent with the width of the short side of the fastener 3 slot;

[0054] Step 2: reserve reserved holes 2-1 connected to the borders on both sides of the side keel 2, reserve a lifting eye screw hole 2-2 in the middle of the side keel 2, and reserve two reserved holes 2-3 on the inner side opposite to the inner screw holes 3-3 of the fasteners;

[0055] Step 3: Place and install the main keel 1, the side keel 2, and the fastener 3 in the specified positions, and use the eye bolt 5-2 and the eye nut 5-3 to fix the fastener slide 3-1 to the position of the reserved hole 1-1 on the main keel 1;

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

[0057] Step 5: Align the inner screw holes 3-3 of the fasteners with the reserved screw holes 2-3 of the side keel 2, and fix them with screws 5-4. At the same time, use screws 5-4 to directly connect the outer screw holes 3-2 with the border.

[0058] The ceiling restraint with tension spring reset type involved in the present invention is provided with a lifting eye bolt connected to the tension spring, and the hooks at both ends of the spring are respectively connected to the lifting eye, when the main keel undergoes axial displacement, the lifting eye bolt will slide along the slide groove, and 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 the fatigue damage of the ceiling keel and extending its service life; the present invention adds a tension spring component, so that the node can absorb part of the earthquake 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 caused by an earthquake; when the present invention is used to assemble the node, 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, the fastener and the boundary, each component is directly or indirectly connected by bolts or screws, which strengthens the integrity of the node and the structural earthquake resistance, making the structure more stable and having good application prospects.

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

Claims

1. A reset type ceiling restraint with a tension spring, characterized in that: include: Fastener (3), tension spring (4), eye bolt (5-2), eye nut (5-3), eye screw (5-1); The fastener (3) is composed of a web with a T-shaped reserved space at the center and a flange extending from the end of the web; A sliding groove (3-1) is provided in the bending area of ​​the web of the fastener (3), and the eye bolt (5-2) and the eye nut (5-3) can pass through the sliding groove (3-1) for connection and slide up and down in the sliding groove (3-1); One end of the tension spring (4) is connected to the main keel (1) and the fastener (3) through an eye bolt (5-2), an eye nut (5-3), and the other end is connected to the side keel (2) and the boundary through an eye screw (5-1), and is arranged obliquely at 30° in a horizontal plane; The web of the main keel (1) is nested in the web reserved space of the fastener (3).

2. The reset type ceiling restraint with a tension spring according to claim 1, characterized in that: The flange member is arranged on one side of the top end of the web of the fastener (3).

3. The reset type ceiling restraint with a tension spring as claimed in claim 1, characterized in that: The flange member is provided with an outer row of screw holes (3-2) and an inner row of screw holes (3-3); the screws of the outer row of screw holes (3-2) are directly connected to the boundary, and the screws of the inner row of screw holes (3-3) are fixedly connected to the boundary through the side keel (2).

4. The reset type ceiling restraint with a tension spring as claimed in claim 1, characterized in that: The fastener (3) is fixedly connected to the reserved hole (1-1) of the main keel (1) and the main keel (1) by passing through its web slide groove (3-1) via an eye bolt (5-2) and an eye nut (5-3).

5. The reset type ceiling restraint with a tension spring as claimed in claim 1, characterized in that: One end of the tension spring (4) is connected to the main keel (1) and the fastener (3) via an eye bolt (5-2), an eye nut (5-3), and the other end is fixedly connected to the side keel (2) via an eye screw (5-1).

6. The reset type ceiling restraint with a tension spring as claimed in claim 1, characterized in that: The number of the tension springs (4) is two, which are symmetrically arranged on both sides of the web of the fastener (3).

7. The reset type ceiling restraint with a tension spring as claimed in claim 1, characterized in that: The calculation of the connection node stiffness K formed by the ceiling restraint member and the main keel (1) and the side keel (2) includes two stages: (i) Only the tension spring (4) acts: When the acting force is small, the eyebolt (5-2) moves freely in the slide groove (3-1), and the acting force is entirely borne by the tension spring (4). At this time, the stiffness of the node satisfies: in: In the formula, F 合 represents the total load borne by the structure, F represents the tensile force borne by the tension spring, △X represents the deformation of the tension spring, θ represents the angle between the spring and the side keel, one end of the tension spring (4) is connected to the eyebolt (5-2) or the eye of the eyenut (5-3), and the other end is connected to the side keel (2) through the eyebolt (5-1), and the two tension springs (4) are arranged symmetrically with respect to the main keel (1); (ii) The stage of the joint action of the fastener (3) and the tension spring (4): As the tension increases, the elongation of the tension spring (4) increases until it reaches the maximum elongation, and then the web of the fastener (3) begins to deform. Therefore, the stiffness calculation of the connection node needs to take into account the stiffness of the fastener. At this time, the stiffness of the node satisfies: Where 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, △X max is the maximum extension of the extension spring (4), θ max is the maximum value of the angle formed by the tension spring (4) and the side keel (2), and the other symbols are the same as those in the above formula.

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