CN109736450B - Multifunctional node locking device for monitoring and enhancing structural stability - Google Patents
Multifunctional node locking device for monitoring and enhancing structural stability Download PDFInfo
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- CN109736450B CN109736450B CN201910103991.9A CN201910103991A CN109736450B CN 109736450 B CN109736450 B CN 109736450B CN 201910103991 A CN201910103991 A CN 201910103991A CN 109736450 B CN109736450 B CN 109736450B
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Abstract
The invention relates to a multifunctional node locking device for monitoring and enhancing structural stability, wherein a sleeve or a sleeve disc, a sensor and a supporting element are additionally arranged in a node area formed by the intersection and connection of a plurality of rod pieces. The two ends of the sleeve are locked and buckled on the rod pieces on the two sides of the node, and the periphery of the sleeve disc is locked and buckled on the rod pieces on the periphery of the space node, so that the rod pieces and the sleeve or the sleeve disc are stressed together. When the structure begins to be unstable, the deformation of the node is caused to increase rapidly, and after the deformation exceeds a certain range, a sensor arranged below the node is triggered to send out an early warning signal; meanwhile, the node and the sleeve or the sleeve disc are integrally stressed to generate internal force redistribution, so that the purpose of preventing or delaying structural instability is achieved. The clearance between the sleeve and the rod piece outside the plane is reduced, and the rigidity and the stability of the structure outside the plane can be enhanced. The multifunctional joint lock catch is detachable, so that the multifunctional joint lock catch is convenient to install in a newly-built structure, is suitable for being additionally arranged in a reinforced structure, and can be used for temporarily enhancing the structural stability in construction.
Description
Technical Field
The invention relates to the field of structural health monitoring and stability control, in particular to a multifunctional node locking device for monitoring and enhancing structural stability.
Background
The structural health monitoring refers to the real-time monitoring of structural components and the identification of structural damage, and the observed value is an important basis for structural maintenance. In addition, in the design and use of the current steel structure, the stability becomes a control factor, particularly, a complete structure is not formed in the construction and installation stages of the steel structure, the stability and the bearing capacity do not reach the design values, and safety accidents are most likely to happen, so that the instability monitoring of the steel structure is paid attention by scholars at home and abroad, and a certain progress is made. As a branch of structural health monitoring, steel structure instability monitoring takes deformation displacement of a member or a node as a monitoring object, thereby monitoring the stable state of the member or the node. At present, the device applicable to the structural instability health monitoring only considers sending out early warning, but cannot further limit the occurrence of instability so as to realize control.
At present, steel structure instability monitoring devices mainly comprise the following devices, wherein the dynamic displacement method research of monitoring a tall building by using a GPS (global positioning system) published by quiet jade in engineering survey in 1997, the establishment and application of a GPS engineering structure monitoring system published by Rong in 1999 in academic newspaper of surveying and mapping of liberty military, and the construction measurement of a Tiger gate pier, a tower and an anchor GPS published by Cen Ming Shen in 1999 in university of southwest traffic report indicate that the deformation of the tall building can be detected by using the GPS monitoring system, and the method has the advantages of higher precision and larger range, but is easily interfered by surrounding random signals. The 'Beijing university gym steel roof construction simulation and monitoring' published in the 'report on civil engineering of Qian Jia Ru in 2009,' long-span steel structure construction loading health monitoring and simulation analysis 'published in the' spatial structure 'of Wang Xili in 2012, and' Strain health monitoring and calculation simulation analysis 'published in the' report on civil engineering of China swimming center steel structure construction unloading process and operation period 'in the' report on civil engineering of 2012 are all reasonably arranged in the large-span steel roof truss to monitor the structural construction loading process and operation period so as to carry out structural health monitoring, and provide reference and reference for the later measurement point arrangement of the same kind of engineering; further, the researchers propose that the instability deformation of the reticulated shell structure or the welded hollow node ball is monitored through an acoustic emission device and the like, but certain difficulty may exist in measurement.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing a multifunctional node locking device for monitoring and enhancing structural stability.
The purpose of the invention can be realized by the following technical scheme:
the invention firstly provides a multifunctional node locking device for monitoring and enhancing the structural stability, a sleeve, a sensor and a supporting element are additionally arranged in a node area formed by the intersection and the connection of two rod pieces,
the two ends of the sleeve are locked on the two rod pieces at the two sides of the node by the supporting elements, so that the rod pieces and the sleeve are stressed together, the rod pieces penetrate through the supporting elements of the sleeve, the supporting elements and the rod pieces are connected in a sliding contact manner, the supporting elements of the sleeve are allowed to slide along the axial direction of the rod pieces,
a sensor is arranged in the sleeve and is positioned below the node, when the structure begins to be unstable, the deformation of the node is caused to be rapidly increased, and after the deformation exceeds a certain range, the node is contacted with the sensor to send out an early warning signal; meanwhile, the node and the sleeve are stressed integrally, so that internal force redistribution occurs, and the purpose of preventing or delaying structural instability is achieved.
Furthermore, the supporting element adopts a positioning bolt, the sleeve and the rod piece are fixed through the positioning bolt, the positioning bolt penetrates through a screw hole in the sleeve, the end part of the smooth bolt is connected with the rod piece in a sliding contact mode, the positioning bolt allows the rod piece and the sleeve to generate axial relative displacement of the rod piece, but limits the lateral displacement of the rod piece, and therefore common stress of the rod piece and the sleeve is achieved.
Furthermore, the supporting element adopts a limiting disc, a baffle plate and a connecting bolt, the rod piece penetrates through the limiting disc, the baffle plate is welded with the inner side surface of the end part of the sleeve, and the limiting disc and the baffle plate are fixed through the connecting bolt; the limiting disc is connected with the rod piece in a sliding contact mode, the rod piece and the sleeve are allowed to axially and relatively displace by the limiting disc, and lateral displacement of the rod piece is limited, so that the rod piece and the sleeve are stressed together.
Furthermore, the sleeve is a hollow section component such as an elliptical tube, a circular tube, a rectangular tube or a square tube.
Further, the sleeve adopts assembled, lattice formula component, the sleeve passes through otic placode or angle steel and connecting bolt is fixed by the channel-section steel that two sections cross-sections are the same, wherein, welded connection forms the welding seam between otic placode and the channel-section steel, pass through positioning bolt and be connected between angle steel and the channel-section steel.
Furthermore, the number of the sleeves is two, two independent sleeves are arranged on two sides of the node respectively, the two rod pieces penetrate through one sleeve respectively, and the two sleeves are connected through the profile steel connecting piece to form integral cooperative stress.
Based on the popularization and application of the multifunctional node locking device for monitoring and enhancing the structural stability to the three-dimensional space nodes, the invention also provides another multifunctional node locking device for monitoring and enhancing the structural stability, a sleeve disc, a sensor and a supporting element are additionally arranged in a node area formed by the intersection and the connection of a plurality of rod pieces, the periphery of the sleeve disc is locked and locked on all the rod pieces at the periphery of the nodes by the supporting element, so that the common stress of the rod pieces and the sleeve disc is realized, the rod pieces penetrate through the supporting element of the sleeve disc, the connection between the supporting element and the rod pieces is sliding contact connection, the supporting element of the sleeve disc is allowed to slide along the axial direction of the rod pieces, the sensor is arranged in the sleeve disc, the sensor is positioned below the nodes, when the structure is unstable, the deformation of the nodes is rapidly increased, and after the deformation exceeds a certain range, sending out an early warning signal; meanwhile, the node and the sleeve plate are stressed integrally, so that internal force redistribution occurs, and the purpose of preventing or delaying structural instability is achieved.
The multifunctional node locking device for monitoring and enhancing the structural stability is a flat reticulated shell structure space node, so that the multifunctional locking device can be extended to be applied to monitoring collapse of the flat reticulated shell structure space node and jump instability of the flat shell.
Furthermore, the supporting element adopts a limiting disc and a connecting bolt, the rod piece penetrates through the limiting disc, and the limiting disc and the side wall plate of the sleeve disc are fixed through the connecting bolt; the connection between the limiting disc and the rod piece is sliding contact connection, the limiting disc allows the rod piece and the sleeve disc to generate axial relative displacement of the rod piece, but limits the lateral displacement of the rod piece, thereby realizing the common stress of the rod piece and the sleeve disc,
the side wall plate and the bottom plate of the sleeve plate can be appropriately perforated, so that the deformation of the rod pieces and the nodes can be conveniently and directly observed, and the installation, the maintenance and the overhaul are convenient.
Furthermore, the rod, the sleeve or the sleeve disc can be made of a metal material or an alloy material with good ductility and toughness, such as a building structural steel material or an aluminum alloy material, and the sleeve or the sleeve disc can be made of a material with high strength, good toughness and good transparency, such as a polycarbonate plate, an epoxy resin-based glass fiber reinforced composite material and the like, so that the deformation state of the rod and the node can be observed conveniently.
Furthermore, a limiting rod is arranged at the node to more effectively limit the deformation of the node and trigger the early warning signal of the sensor in time. On one hand, the displacement limit value of the node can be reduced, the jumping instability is avoided from occurring before the early warning of the sensor, and on the other hand, the bearing capacity and the rigidity of the structure can be improved after the bottom of the limiting rod is contacted with the sleeve or the sleeve disc, so that the deformation of the node is further limited.
Further, the rod piece can be an I-shaped cross section, and by reducing the gap between the sensor below the node and the rod piece, greater rigidity can be provided in the node locking action section, and the out-of-plane bending rigidity of the node is improved, so that the out-of-plane stability of the node is improved.
The working principle of the invention is as follows:
the invention discloses a multifunctional node locking device for monitoring and enhancing structural stability, which mainly comprises nodes and rod pieces for bearing loads, a sleeve or a sleeve disc for restraining the deformation of the nodes, a sensor and a supporting element. The sensor device is arranged below the node, when the structure begins to be unstable, the deformation of the node is caused to be rapidly increased, and after the deformation exceeds a certain range, the node is contacted with the sensor in the sleeve or the sleeve disc part to send out an early warning signal; meanwhile, the node and the sleeve or the sleeve disc part are stressed integrally, so that internal force redistribution occurs, and the purpose of preventing or delaying structural instability is achieved. And a limiting rod can be arranged between the node and the sensor, so that the displacement limit value of the node can be reduced, and the bearing capacity and rigidity of the structure can be improved after the bottom of the limiting rod is contacted with the sleeve or the sleeve disc, and the deformation of the node is further limited. Moreover, the sleeve or the sleeve disc can adopt an assembled component or a lattice component, and the multifunctional node lock catch is easy to install and disassemble, so that the multifunctional node lock catch is convenient to install in a new structure, is suitable for being additionally arranged in a reinforced structure, and can be used for temporarily enhancing the stability in the plane of the structure or outside the plane in construction.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the function is powerful and unique: not only carry out health monitoring to steel construction node deformation, can also restrict the development that the node warp, improve the bearing capacity, realize control.
2. The application range is wide: in the portal rigid frame or the light roof truss, the method can be applied to ridge nodes, beam-column nodes and beam-beam splicing nodes; in a single layer mesh structure, it is applicable not only to the top nodes, but also to other critical or relatively weak nodes.
3. The method is convenient to install in a newly-built structure, is suitable for being additionally arranged in a reinforced structure, and can be used for temporarily enhancing the stability in the plane or outside the plane of the structure in construction.
4. Safe and reliable: the structure is simple, easy to manufacture, not easy to damage and capable of being used for a long time.
The invention can not only send out early warning signals, but also provide restraint to limit the node deformation within a certain range, thereby improving the stable bearing capacity of the structure. Utilize multi-functional node hasp detachable characteristic, both be convenient for install in newly-built structure, also be suitable for to add in reinforced structure, still can be used to strengthen structural stability temporarily in the construction.
Drawings
Fig. 1 is a schematic view of a main view structure of a multifunctional node locking device capable of monitoring and controlling in embodiment 1;
fig. 2 is a schematic top view of the multifunctional node locking device capable of monitoring and controlling in embodiment 1;
FIG. 3 is a schematic side view of the multifunctional node locking device capable of monitoring and controlling in embodiment 1;
FIG. 4 is a schematic side view of the multifunctional node locking device capable of monitoring and controlling in embodiment 2;
FIG. 5 is a schematic side view of the multifunctional node locking device capable of monitoring and controlling in embodiment 3;
FIG. 6 is a schematic view showing out-of-plane instability and monitoring of the rod member for restraining the H-shaped or H-shaped cross section in example 4;
FIG. 7 is a schematic view showing a stopper rod provided between a node and a sensor in embodiment 5;
fig. 8 is a schematic view of a main view structure of the multifunctional node locking device capable of monitoring and controlling in embodiment 6;
FIG. 9 is a schematic top view of the multifunctional node locking device capable of monitoring and controlling in embodiment 6;
FIG. 10 is a schematic sectional view taken along the line A-A in FIG. 9;
fig. 11 is a schematic view of a main view structure of a multifunctional node locking device capable of monitoring and controlling in embodiment 7;
fig. 12 is a schematic top view of the multifunctional node locking device capable of monitoring and controlling in embodiment 7.
1. Node, 2, member, 3, sleeve, 3b, sleeve disc, 4, sensor, 5, positioning bolt, 6, spacing disc, 7, baffle, 8, connecting bolt, 9, welding seam, 10, otic placode, 11, angle steel, 12, gag lever post, 13, connecting plate, 14, shaped steel connecting piece.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
Refer to fig. 1, 2, 3.
A multifunctional node locking device for monitoring and enhancing structural stability is characterized in that a sleeve 3, a sensor 4 and a supporting element are additionally arranged in a node 1 area formed by the intersection and connection of two rod pieces 2,
the two ends of the sleeve 3 are locked on the two rod pieces 2 at the two sides of the node 1 by using supporting elements, so that the rod pieces 2 and the sleeve 3 are stressed together, the rod pieces 2 penetrate through the supporting elements of the sleeve 3, the connection between the supporting elements and the rod pieces 2 is a sliding contact connection, the supporting elements of the sleeve 3 are allowed to slide along the axial direction of the rod pieces 2,
a sensor 4 is arranged in the sleeve 3, the sensor 4 is positioned below the node 1, when the structure begins to be unstable, the deformation of the node 1 is caused to increase rapidly, and after the deformation exceeds a certain range, the node 1 is contacted with the sensor 4 to send out an early warning signal; meanwhile, the node 1 and the sleeve 3 are stressed integrally, so that internal force redistribution occurs, and the purpose of preventing or delaying structural instability is achieved.
The node mainly bears vertical load, and the sleeve provides restraint to keep the deformation of the node within a certain range, so that the internal force redistribution can be generated after the node is stressed and deformed, the bearing capacity of the node is improved, and the structural instability is prevented or restrained;
in this embodiment, the supporting element adopts a positioning bolt 5, the sleeve 3 and the rod member 2 are fixed by the positioning bolt 5, the positioning bolt 5 passes through a screw hole on the sleeve 3, the smooth bolt end part is connected with the rod member 2 in a sliding contact manner, the positioning bolt 5 allows the rod member 2 and the sleeve 3 to generate axial relative displacement of the rod member 2, but limits the lateral displacement of the rod member 2, so that the rod member 2 and the sleeve 3 are stressed together.
In this embodiment, the sleeve 3 is a hollow section member such as an elliptical tube, a circular tube, a rectangular tube, or a square tube.
In this embodiment, the rod 2 is a circular tube, a square tube or a rectangular tube.
Example 2
Refer to fig. 1, 2, 4.
A multifunctional node locking device for monitoring and enhancing structural stability is characterized in that a sleeve 3, a sensor 4 and a supporting element are additionally arranged in a node 1 area formed by the intersection and connection of two rod pieces 2,
the two ends of the sleeve 3 are locked and buckled on the two rod pieces 2 on the two sides of the node 1 through supporting elements, so that the rod pieces 2 and the sleeve 3 are stressed together, the rod pieces 2 penetrate through the supporting elements of the sleeve 3, the supporting elements are connected with the rod pieces 2 in a sliding contact mode, the supporting elements of the sleeve 3 are allowed to slide along the axial direction of the rod pieces 2, a sensor 4 is arranged in the sleeve 3, the sensor 4 is located below the node 1, when the structure begins to be unstable, the deformation of the node 1 is caused to increase rapidly, and after the deformation exceeds a certain range, the node 1 is in contact with the sensor 4 to send out an early warning signal; meanwhile, the node 1 and the sleeve 3 are stressed integrally, so that internal force redistribution occurs, and the purpose of preventing or delaying structural instability is achieved.
In this embodiment, the supporting element adopts a limiting disc 6, a baffle 7 and a connecting bolt 8, the rod 2 penetrates through the limiting disc 6, the baffle 7 is welded with the inner side surface of the end part of the sleeve 3, and the limiting disc 6 and the baffle 7 are fixed through the connecting bolt 8; the limiting disc 6 is in sliding contact connection with the rod piece 2, the limiting disc 6 allows the rod piece 2 and the sleeve 3 to generate axial relative displacement of the rod piece 2, but limits the rod piece 2 to generate lateral displacement, and therefore the rod piece 2 and the sleeve 3 are stressed together.
In this embodiment, the sleeve 3 has a rectangular or square cross section. The clearance between the rod piece 2 and the sleeve 3 is larger in upper and lower clearance and smaller in left and right clearance, so that construction and installation are facilitated.
In this embodiment, the rod 2 is a circular tube, a square tube or a rectangular tube.
Example 3
Refer to fig. 1, 2, 5.
A multifunctional node locking device for monitoring and enhancing structural stability is characterized in that a sleeve 3, a sensor 4 and a supporting element are additionally arranged in a node 1 area formed by two rod pieces 2 in an intersecting connection mode, two ends of the sleeve 3 are locked and locked on the two rod pieces 2 on two sides of the node 1 through the supporting element, so that the rod pieces 2 and the sleeve 3 are stressed together, the rod pieces 2 penetrate through the supporting element of the sleeve 3, the supporting element is connected with the rod pieces 2 in a sliding contact mode, the supporting element of the sleeve 3 is allowed to slide axially along the rod pieces 2, the sensor 4 is arranged in the sleeve 3, the sensor 4 is located below the node 1, when the structure begins to be unstable, the deformation of the node 1 is caused to increase rapidly, and after the deformation exceeds a certain range, the node 1 is in contact with the sensor 4, and an early warning signal is sent; meanwhile, the node 1 and the sleeve 3 are stressed integrally, so that internal force redistribution occurs, and the purpose of preventing or delaying structural instability is achieved.
In the installation use, consider that some structures need extra reinforcement at the construction stage, some structures may need local reinforcement because of later stage user demand, can become the form that can dismantle the change with node hasp design.
Therefore, in this embodiment, the sleeve 3 is an assembled or lattice member, and the sleeve 3 is fixed to the connecting bolt 8 through the ear plate 10 by two sections of channel steel with the same cross section, so as to be easily installed and disassembled, wherein the ear plate 10 is welded to the channel steel to form a weld 9.
In this embodiment, the rod 2 is a circular tube, a square tube or a rectangular tube.
Example 4
Refer to fig. 1, 2, 6.
A multifunctional node locking device for monitoring and enhancing structural stability is characterized in that a sleeve 3, a sensor 4 and a supporting element are additionally arranged in a node 1 area formed by two rod pieces 2 in an intersecting connection mode, two ends of the sleeve 3 are locked and locked on the two rod pieces 2 on two sides of the node 1 through the supporting element, so that the rod pieces 2 and the sleeve 3 are stressed together, the rod pieces 2 penetrate through the supporting element of the sleeve 3, the supporting element is connected with the rod pieces 2 in a sliding contact mode, the supporting element of the sleeve 3 is allowed to slide axially along the rod pieces 2, the sensor 4 is arranged in the sleeve 3, the sensor 4 is located below the node 1, when the structure begins to be unstable, the deformation of the node 1 is caused to increase rapidly, and after the deformation exceeds a certain range, the node 1 is in contact with the sensor 4, and an early warning signal is sent; meanwhile, the node 1 and the sleeve 3 are stressed integrally, so that internal force redistribution occurs, and the purpose of preventing or delaying structural instability is achieved.
In this embodiment, the sleeve 3 is an assembled or lattice member, and the sleeve 3 is fixed to the connecting bolt 8 through the angle steel 11 by two sections of channel steels with the same cross section, so that the sleeve is easy to mount and dismount, wherein the angle steel 11 is connected to the channel steels through the positioning bolt 5.
In this embodiment, the rod member 2 has an i-shaped or H-shaped cross section, and by reducing the gap between the sensor below the node and the rod member, a greater stiffness can be provided in the node lock action section, and the out-of-plane bending stiffness of the node region is improved, thereby increasing the out-of-plane stability of the structure.
Example 5
Refer to fig. 7.
On the basis of any one of embodiments 1 to 4, a limiting rod 12 can be arranged at the node 1 to more effectively limit the deformation of the node and trigger the early warning signal of the sensor in time. On one hand, the displacement limit value of the node can be reduced, the jumping instability is avoided from occurring before the early warning of the sensor, and on the other hand, the bearing capacity and the rigidity of the structure can be improved after the bottom of the limiting rod is contacted with the sleeve or the sleeve disc, so that the deformation of the node is further limited.
Example 6
Refer to fig. 8, 9, 10.
A multifunctional node locking device for monitoring and enhancing structural stability is characterized in that a sleeve disk 3b, a sensor 4 and a supporting element are additionally arranged in a node 1 area formed by a plurality of rod pieces 2 in an intersecting connection mode, the periphery of the sleeve disk 3b is locked on all the rod pieces 2 on the periphery of the node 1 through the supporting element, so that the rod pieces 2 and the sleeve disk 3b are stressed together, the rod pieces 2 penetrate through the supporting element of the sleeve disk 3b, the supporting element is connected with the rod pieces 2 in a sliding contact mode, the supporting element of the sleeve disk 3b is allowed to slide along the rod pieces 2 in the axial direction, the sensor 4 is arranged in the sleeve disk 3b, the sensor 4 is located below the node 1, when the structure begins to be unstable, the deformation of the node 1 is caused to increase rapidly, and after the deformation exceeds a certain range, the node 1 is in contact with the sensor 4, and an early; meanwhile, the node 1 and the sleeve disc 3b are stressed integrally, so that internal force redistribution occurs, and the purpose of preventing or delaying structural instability is achieved.
In this embodiment, the supporting element adopts a limiting disc 6 and a connecting bolt 8, the rod 2 penetrates through the limiting disc 6, and the limiting disc 6 and the side wall plate of the sleeve disc 3b are fixed through the connecting bolt 8; the connection between the limiting disc 6 and the rod piece 2 is sliding contact connection, the limiting disc 6 allows the rod piece 2 and the sleeve disc 3b to generate axial relative displacement of the rod piece 2, but limits the lateral displacement of the rod piece 2, thereby realizing the common stress of the rod piece 2 and the sleeve disc 3b,
the side wall plate and the bottom plate of the sleeve plate 3b can be appropriately perforated, so that the deformation of the rod pieces and the nodes can be conveniently and directly observed, and the installation, the maintenance and the overhaul are convenient.
The present embodiment is a spatial node of a flat reticulated shell structure, and therefore, the multifunctional locking device of the present invention can be extended to be applied to monitoring collapse of the spatial node of the flat reticulated shell structure and jump instability of the flat reticulated shell.
Example 7
Refer to fig. 11 and 12.
In this embodiment, the rod members 2 have an i-shaped cross section, the two rod members 2 are respectively welded to connecting plates 13, the two connecting plates 13 are connected by connecting bolts 8, and the sensor 4 is disposed below the connecting plates 13.
In the present embodiment, the connection plate 13 corresponds to the node in the above embodiment. In this embodiment, the number of the sleeves 3 may be two, two independent sleeves 3 are respectively arranged on two side members of the node, two rod members respectively penetrate through one sleeve 3, and the two sleeves 3 are connected by a profile steel connecting piece 14 to form an integral cooperative stress, so that the sleeve is easy to mount and dismount.
In the above embodiments, the rod 2, the sleeve 3 or the sleeve 3b may be made of a ductile and tough metal material or alloy material, such as a building structural steel material or an aluminum alloy material, and the sleeve 3 or the sleeve 3b may also be made of a material with high strength, good toughness and good transparency, such as a pamm polycarbonate plate, an epoxy resin-based glass fiber reinforced composite material, etc., so as to facilitate observation of the deformation state of the rod and the node.
The working principle in the above embodiment is as follows:
the invention relates to a multifunctional node locking device for monitoring and enhancing structural stability, which mainly comprises nodes and rod pieces for bearing load, a sleeve or a sleeve disc for restraining the deformation of the nodes, a sensor and a supporting element. The sensor is arranged below the node, when the structure begins to be unstable, the deformation of the node is caused to increase rapidly, and after the deformation exceeds a certain range, the sensor arranged below the node is triggered to send out an early warning signal; meanwhile, the node and the sleeve or the sleeve disc are integrally stressed to generate internal force redistribution, so that the purpose of preventing or delaying structural instability is achieved. And can through set up a gag lever post between node and sensor, can reduce node displacement limit value on the one hand, on the other hand can improve structure bearing capacity and rigidity after gag lever post bottom and sleeve or set dish contact, further restricts the node and warp. Moreover, the sleeve or the sleeve disc can adopt an assembled component or a lattice component, and the multifunctional node lock catch is easy to install and disassemble, so that the multifunctional node lock catch is convenient to install in a new structure, is suitable for being additionally arranged in a reinforced structure, and can be used for temporarily enhancing the stability in the plane of the structure or outside the plane in construction.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (8)
1. A multifunctional node locking device for monitoring and enhancing structural stability is characterized in that a sleeve (3), a sensor (4) and a supporting element are additionally arranged in a node (1) area formed by the intersection and connection of two rod pieces (2),
the two ends of the sleeve (3) are locked and buckled on the two rod pieces (2) at the two sides of the node (1) by using supporting elements, so that the rod pieces (2) and the sleeve (3) are stressed together, the rod pieces (2) penetrate through the supporting elements of the sleeve (3), the connection between the supporting elements and the rod pieces (2) is sliding contact connection, and the supporting elements of the sleeve (3) are allowed to slide along the axial direction of the rod pieces (2),
a sensor (4) is arranged in the sleeve (3), the sensor (4) is positioned below the node (1), when the structure begins to be unstable, the deformation of the node (1) is caused to increase rapidly, and after the deformation exceeds a certain range, the node (1) is contacted with the sensor (4) to send out an early warning signal; meanwhile, the node (1) and the sleeve (3) are stressed integrally to generate internal force redistribution, so that the purpose of preventing or delaying structural instability is achieved;
the limiting rod (12) is arranged at the node (1), so that on one hand, the displacement limit value of the node can be reduced, the jumping instability is avoided before the early warning of the sensor, on the other hand, the bearing capacity and the rigidity of the structure can be improved after the bottom of the limiting rod is contacted with the sleeve, and the deformation of the node is further limited;
the two sleeves (3) are arranged, the two independent sleeves (3) are arranged on the two sides of the node (1), the two rod pieces penetrate through the sleeves (3) respectively, and the two sleeves (3) are connected through a profile steel connecting piece (14) to form integral cooperative stress.
2. A multifunctional joint locking device for monitoring and enhancing structural stability as claimed in claim 1, wherein said supporting member employs a positioning bolt (5), the sleeve (3) and the rod member (2) are fixed by the positioning bolt (5), said positioning bolt (5) passes through a screw hole on the sleeve (3), the smooth bolt end is connected with the rod member (2) in sliding contact, said positioning bolt (5) allows the rod member (2) and the sleeve (3) to move axially relative to each other, but limits the rod member (2) from moving laterally, thereby realizing the common stress of the rod member (2) and the sleeve (3).
3. The multifunctional node locking device for monitoring and enhancing structural stability as claimed in claim 1, wherein the supporting element is a limiting disc (6), a baffle plate (7) and a connecting bolt (8), the rod (2) passes through the limiting disc (6), the baffle plate (7) is welded with the inner side surface of the end part of the sleeve (3), and the limiting disc (6) and the baffle plate (7) are fixed through the connecting bolt (8); spacing dish (6) with be connected for sliding contact between member (2) and connect, member (2) axial relative displacement takes place for spacing dish (6) and sleeve (3), but restriction member (2) take place lateral displacement to realize member (2) and sleeve (3) atress jointly.
4. A multifunctional nodal locking device for monitoring and enhancing structural stability, according to claim 1, wherein said sleeve (3) is an elliptical, circular or rectangular tube.
5. The multifunctional node locking device for monitoring and enhancing the structural stability as claimed in claim 1, wherein the sleeve (3) is an assembled or lattice component, the sleeve (3) is fixed with a connecting bolt (8) through an ear plate (10) or an angle steel (11) by two sections of channel steel with the same cross section, wherein the ear plate (10) is connected with the channel steel in a welding manner to form a welding seam (9), and the angle steel (11) is connected with the channel steel through a positioning bolt (5).
6. A multifunctional node locking device for monitoring and enhancing structural stability is characterized in that a sleeve disc (3b), a sensor (4) and a supporting element are additionally arranged in a node (1) area formed by the connection of a plurality of rod pieces (2),
the periphery of the sleeve disk (3b) is locked on all the rods (2) at the periphery of the node (1) by using supporting elements, so that the rods (2) and the sleeve disk (3b) are stressed together, the rods (2) penetrate through the supporting elements of the sleeve disk (3b), the connection between the supporting elements and the rods (2) is a sliding contact connection, and the supporting elements of the sleeve disk (3b) are allowed to slide along the axial direction of the rods (2),
a sensor (4) is arranged in the sleeve disc (3b), the sensor (4) is positioned below the node (1), when the structure begins to be unstable, the deformation of the node (1) is caused to increase rapidly, and after the deformation exceeds a certain range, the node (1) is contacted with the sensor (4) to send out an early warning signal; meanwhile, the node (1) and the sleeve disc (3b) are integrally stressed to generate internal force redistribution, so that the purpose of preventing or delaying structural instability is achieved;
the limiting rod (12) is arranged at the node (1), so that on one hand, the displacement limit value of the node can be reduced, the jumping instability is avoided before the early warning of the sensor, on the other hand, the bearing capacity and the rigidity of the structure can be improved after the bottom of the limiting rod is contacted with the sleeve disc, and the deformation of the node is further limited.
7. A multifunctional node locking device for monitoring and enhancing structural stability as claimed in claim 6, wherein the supporting element is a limiting disc (6) and a connecting bolt (8), the rod (2) passes through the limiting disc (6), and the limiting disc (6) and the side wall plate of the sleeve disc (3b) are fixed through the connecting bolt (8); the connection between the limiting disc (6) and the rod piece (2) is sliding contact connection, the limiting disc (6) allows the rod piece (2) and the sleeve disc (3b) to generate axial relative displacement of the rod piece (2), but limits the lateral displacement of the rod piece (2), so that the rod piece (2) and the sleeve disc (3b) are stressed together,
the side wall plate and the bottom plate of the sleeve plate (3b) are provided with holes, so that the deformation of the rod pieces and the nodes can be directly observed conveniently, and the installation, maintenance and overhaul are facilitated.
8. A multifunctional joint locking device for monitoring and enhancing structural stability as claimed in claim 1 or 6, wherein the rod member (2), the sleeve (3) or the sleeve disk (3b) is made of metal material or alloy material.
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