CN210032723U - Ancient building timber structure bucket arch is from restoring to throne power consumption connected node - Google Patents
Ancient building timber structure bucket arch is from restoring to throne power consumption connected node Download PDFInfo
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- CN210032723U CN210032723U CN201920655783.5U CN201920655783U CN210032723U CN 210032723 U CN210032723 U CN 210032723U CN 201920655783 U CN201920655783 U CN 201920655783U CN 210032723 U CN210032723 U CN 210032723U
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- 238000005265 energy consumption Methods 0.000 claims abstract description 24
- 239000002023 wood Substances 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 239000003822 epoxy resin Substances 0.000 claims description 24
- 229920000647 polyepoxide Polymers 0.000 claims description 24
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- 239000000956 alloy Substances 0.000 claims description 4
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Abstract
The utility model discloses an ancient building timber structure bucket arch is from restoring to throne power consumption connected node can adopt this connected node to carry out bucket arch and consolidate when carrying out the maintenance of falling the shelf or local jacking maintenance to ancient building. The method comprises the steps of slotting (holes) in hidden positions of a large bucket and a flat square timber, and connecting the large bucket and the flat square timber by adopting SMA screw rods and rivet nuts instead of traditional wood tenon-mortise connection to form a bucket arch self-resetting energy consumption connecting node. The utility model can improve the energy consumption capability of the bucket arch big bucket and flat plate square column connecting node, and reduce the residual deformation of the big bucket and flat plate square column connecting node through the hyperelastic characteristic of SMA, thereby realizing bucket arch self-resetting after the strong shock effect; according to the method, the appearance of the bucket arch of the historic building wood structure is not changed, only necessary holes are formed in a hidden position, the connection can not only strengthen rotation constraint on the bucket, but also has small influence on the stress performance of other parts in the bucket arch.
Description
Technical Field
The utility model relates to an ancient building timber structure bucket arch is from restoring to throne power consumption connected node can consolidate the bucket arch when ancient building frame maintenance or local jacking maintenance. By adopting the connection, the bucket arch has self-resetting performance by applying pretensioning strain to the SMA screw rod on the premise of not constraining the bucket arch to rotate, and the energy consumption enhancement effect of the connection between the bucket arch big bucket and the flat plate balk is realized. Belongs to the field of ancient building reinforcement.
Background
The structure function of ancient building timber structure bucket arch includes provides certain restoring force and plays the energy consumption cushioning effect for the structure, and the bucket arch layer makes whole structure have good anti-seismic performance. In the traditional bucket arch manufacturing process, the bucket arch and the flat board purlin are connected through the wood tenons, and the wood tenons are easy to break and damage due to the fact that the ultimate strength of the wood tenons is low and the service life of the wood tenons is long, and the wood tenons are easy to damage under the reciprocating action of earthquakes. In addition, according to the requirements of the technical specification for maintaining and reinforcing the ancient wooden building structure (GB50165-92), the maintenance and reinforcement of the ancient wooden building structure must follow the principle of not changing the original state of the cultural relic, so that a bucket arch lossless or slightly-damaged reinforcement scheme needs to be proposed.
At present, the method for seismic reinforcement of dougong mainly comprises the following steps:
(1) penetrating self-tapping screw inclined nails through the large bucket and the flat plate purlin to enhance the connection between the large bucket and the flat plate purlin;
(2) local jacking is adopted for bucket arch with seriously damaged parts such as a big bucket and a scattered bucket, and the original damaged parts are replaced.
The bucket arch reinforcing methods listed above all can play a role in improving the bucket arch anti-seismic performance, but in the method (1), as self-tapping screws penetrate through the big bucket, obvious screw holes exist on the outer side surface of the big bucket; in the method (2), because the new part is adopted to replace the old damaged part, although the new part is subjected to 'old' treatment, the actual effect still has obvious color difference. The reinforcement methods change the appearance of the bucket arch to a greater extent, cannot meet the principle of not changing the original state of the cultural relic, and cannot carry out scientific and effective repair on the bucket arch.
In view of this, there is a need for a non-destructive or slightly-damaged reinforcement method for a wooden bucket arch of an ancient building, which can provide a self-resetting property for the bucket arch without changing the appearance of the bucket arch, and can reduce the energy consumption and avoid the bucket arch from being seriously damaged under the action of a strong shock.
SUMMERY OF THE UTILITY MODEL
In order to overcome above-mentioned prior art's defect and not enough, the utility model aims to provide an ancient building timber structure bucket arch that adopts the SMA screw rod to connect is from restoring to throne power consumption connected node, the utility model is suitable for a consolidate the bucket arch when ancient building frame maintenance or local jacking maintenance. The utility model can improve the energy consumption capability of the bucket arch big bucket and flat plate purlin connecting node to a certain extent, and reduce the residual deformation of the big bucket and flat plate purlin connecting node through the superelasticity characteristic of the SMA material, thereby realizing the self-resetting of the bucket arch after the strong shock effect; on the other hand, the method does not change the appearance of the bucket arch of the ancient architecture wood structure, only necessary local hole opening is carried out on the bucket arch, the connection can not only strengthen the rotation constraint of the bucket, but also has little influence on the stress performance of other parts in the bucket arch.
The utility model discloses the technical scheme who adopts as follows:
the utility model provides an ancient architecture wood structure bucket arch self-resetting energy consumption connecting node, which comprises a flat board square column, a big bucket, a rivet nut, an epoxy resin bonding layer, an SMA screw rod, a steel backing plate, a centripetal joint bearing and an upper nut, wherein the big bucket is arranged above the flat board square column; the upper surface of the big bucket is provided with a square groove, a steel base plate is pre-embedded in the groove of the big bucket, and vertical through holes are pre-drilled in the centers of the big bucket and the steel base plate; arranging a rivet nut embedding hole on the surface of the flat square column, and injecting epoxy resin binder into a square groove arranged in the center of the big bucket and the embedding hole of the flat square column; a radial spherical plain bearing is arranged above the steel base plate; the bottom of the SMA screw is connected and screwed with a rivet nut, the upper part of the SMA screw sequentially passes through a vertical through hole in the big bucket, a steel backing plate and a radial spherical plain bearing, and the big bucket is firmly connected with the flat plate balk by screwing the upper nut on the SMA screw.
Preferably, an epoxy resin adhesive layer is formed by an epoxy resin adhesive injected between the embedding hole of the flat square column and the hexagonal rivet nut, and the epoxy resin adhesive layer formed after curing is adhered to the outer wall of the hexagonal rivet nut and is adhered to the inner wall of the flat square column.
Preferably, the rivet nut is a Q235 or Q345 steel component, the height of the rivet nut is 15-25mm, the thickness of the rivet nut is 1-2mm, and the inner diameter of the rivet nut is 10-20 mm; the thickness of the epoxy resin bonding layer is 3 mm; the depth of an embedded hole on the surface of the flat purlin is 15-25mm, and the diameter of the hole is more than or equal to 7-8 mm.
Preferably, the square groove on the upper surface of the big bucket is 5mm deep, and the length and the width of the square groove are 50mm respectively; the square steel backing plate 6 is made of Q235 or Q345 steel components, the length and the width of the steel backing plate are respectively 50mm, and the thickness of the steel backing plate is 5 mm; the thickness of the epoxy resin bonding layer is 1 mm; the diameter of the vertical through hole inside the big bucket and inside the steel backing plate is more than or equal to 20 mm.
Preferably, the SMA screw is made of common alloy materials such as nickel titanium or copper-aluminum-beryllium, and the diameter of the screw is 10mm-20 mm; the radial spherical plain bearing is made of stainless steel 4Cr13, and the diameter of the inner ring of the radial spherical plain bearing is more than or equal to 20 mm.
Preferably, the upper nut above the SMA screw is a Q235 or Q345 steel component, the upper nut is 5mm high, 1-2mm thick and 10-20mm in inner diameter.
The SMA screw rod of the utility model is used for firmly connecting the big bucket and the flat square column, plays a role in dissipating seismic energy, and can provide a return moment for the bucket arch under the action of the earthquake; the rivet nut and the epoxy resin bonding layer are arranged in an embedding hole on the surface of the flat plate purlin; the steel backing plate and the radial spherical plain bearing are both arranged in the square groove on the upper surface of the big bucket and are used for exerting pretension stress in the SMA screw rod and simultaneously not influencing the rotational freedom degree of the big bucket; the upper nut is arranged in the square groove on the surface of the big bucket, and is screwed during construction, so that the upper nut and the outer ring of the radial spherical plain bearing are mutually extruded, and the application of the pretension stress of the SMA screw is realized.
The utility model has the advantages that:
the utility model discloses ancient building timber structure bucket arch is applicable to the ancient building and falls the maintenance or when local jacking maintenance, carries out the normal position to serious askew sudden strain or rotten ageing bucket arch of dying and consolidates. The appearance of the bucket arch is not changed by the self-resetting energy-consumption connecting node after the reinforcing construction is finished, and the requirement that the maintenance and the reinforcement of the ancient building wood structure must comply with the principle of not changing the original state of the cultural relic in the technical Specification for maintaining and reinforcing the ancient building wood structure (GB50165-92) is met. When adopting this connected node to consolidate bucket arch, do not destroy the historical geomorphology of ancient building and build the characteristic to the construction is easy and simple to handle, and is less to each part stress state influence of bucket arch, and the bucket arch structural layer after the reinforcement continues to exert good shock insulation shock attenuation effect.
This ancient building timber structure bucket arch is from restoring to throne power consumption connected node adopts SMA screw rod to replace traditional wood tenon connection dull and stereotyped balk and big fill, and traditional wood is made and is made the technical requirement and all open the fourth of twelve earthly branches mouth in advance at dull and stereotyped balk top surface and big fill bottom surface, inserts two components of wood tenon connection again, realizes the power consumption through extrusion and friction between wood tenon and the fourth of twelve earthly branches mouth. The self-resetting energy-consumption connecting node adopts the SMA screw rod as a main energy-consumption component, and the phase change between the martensite phase and the austenite phase of the shape memory alloy material during loading and unloading is utilized to dissipate seismic energy. Compare tenon fourth of twelve earthly branches friction power consumption, the SMA screw rod power consumption is more, can effectively alleviate earthquake to ancient building timber structure's destruction.
In addition, the bucket arch structure layer and the large roof supported by the bucket arch structure layer have very large mass, and huge inertia force can be generated under seismic excitation, so that a connecting node between the bucket and the flat plate balk has large shearing force, the SMA material has high strength and high rigidity, the shearing resistance bearing capacity and the side rigidity resistance of a semi-rigid node between the bucket and the flat plate balk can be greatly improved, the node is in an elastic stage under the action of small earthquake, compared with the traditional wood tenon connecting node, the interlayer side shift of the bucket arch layer is obviously reduced, and the bucket arch layer does not need to be repaired or replaced after the earthquake.
When the temperature T is higher than the austenite phase transformation finishing temperature AfWhen the SMA is in an austenite phase, the self-reset energy consumption connecting node can generate stress-induced martensite phase transformation under the action of medium shock or large shock, and the material is transformed into a stress-induced martensite phase; when the external force is unloaded, the material is subjected to austenite phase change, the material is converted into an austenite phase, and almost no residual deformation exists in the material, the process is called as a super-elastic effect, the self-resetting energy consumption connecting node can achieve the unique effect of self-resetting of the bucket arch, and the residual deformation of the bucket arch after the earthquake is obviously reduced.
The historic building wood structure bucket arch self-resetting energy consumption connecting node adopting the SMA screw rod only adopts components such as a rivet nut, epoxy resin, the SMA screw rod, a steel base plate, a stainless steel radial spherical plain bearing, a high-strength nut and the like, and the materials of the components are not easy to corrode and age.
After the bucket arch adopting the self-resetting energy-consumption connecting node is subjected to the action of multiple earthquake damages, the node can generate fatigue aging and other phenomena under repeated action, the SMA screw rod needs to be replaced, so that when secondary reinforcement is carried out, the local part of the bucket arch to be secondarily reinforced can be jacked, the new SMA screw rod is used for replacing the old screw rod, and the self-resetting and energy-consumption effects can be continuously exerted after the reinforcement of the node between the big bucket and the flat plate balk is completed.
The ancient building timber structure bucket arch self-resetting energy consumption connecting node adopting the SMA screw rod is characterized in that an upper nut above the SMA screw rod is screwed to be tightly extruded with an outer ring of a radial spherical plain bearing, so that pretension stress is applied to the SMA screw rod, construction torque when the nut is screwed is changed, and pretension stress with different sizes is applied to the interior of the SMA screw rod. In addition, the performance of the connecting node is stable, and the pretensioning stress in the SMA screw rod is basically kept unchanged during normal work.
The utility model provides an ancient building timber structure bucket arch reinforcing method can consolidate the bucket arch when the maintenance of ancient building frame or local jacking maintenance, adopts this connection can be under the unrestraint bucket arch pivoted prerequisite, through exerting the prestretching strain to the SMA screw rod, makes the bucket arch have from the performance of restoring to the throne, realizes the power consumption reinforcing effect of being connected between bucket arch big fill and the dull and stereotyped square timber. The utility model provides an adopt ancient building timber structure bucket arch of SMA screw rod connection to reset power consumption connected node has following advantage:
1) the reinforcing method does not change the appearance of the wooden bucket arch of the ancient building, only needs to carry out necessary local hole opening, and does not damage the historical appearance and the construction characteristics of the ancient building.
2) This connection can strengthen the rotation restraint to big fill, and is less to other part atress performance's in the bucket arch influence moreover, and the bucket arch structural layer after the reinforcement continues to exert good shock insulation and shock absorption effect.
3) Compare traditional tenon connection, SMA screw rod can dissipate more seismic energy in this connected node, has bigger anti shearing bearing capacity and anti side rigidity, and the level of bucket arch moves when can effectively reducing the earthquake, alleviates the earthquake to the destruction of ancient building timber structure.
4) The connection node is in an elastic stage under the action of small earthquake, and does not need to be repaired or replaced after the earthquake.
5) Stress induced martensite phase transformation can occur on the SMA screw rod in the self-reset energy consumption connecting node under the action of medium shock or large shock; when the external force is unloaded, the material is subjected to austenite phase change, the residual deformation of the screw rod is small, the bucket arch self-resetting effect can be achieved, and the residual deformation of the bucket arch after the earthquake is obviously reduced.
6) The connection node is convenient to construct and simple in structure, and the node material is not easy to corrode or age.
7) After the bucket arch adopting the self-resetting energy-consumption connecting node is subjected to the action of multiple earthquake damages, the connecting node has the phenomena of fatigue aging and the like, the secondary reinforcement of the connecting node is operable, and the construction process is simple.
8) The performance of the connecting node is stable, and the pretensioning stress in the SMA screw rod is basically kept unchanged during normal work.
Drawings
FIG. 1 is a cross-sectional view of a bucket arch reinforcement node according to an embodiment of the present invention;
FIG. 2 is a schematic view of a connection structure of the SMA screw and the hopper in the embodiment of the present invention;
fig. 3 is a schematic view of a connection structure of the SMA screw and the flat purlin in the embodiment of the present invention;
FIG. 4 is a schematic perspective view of a bucket arch reinforcement node according to an embodiment of the present invention;
FIG. 5 is a perspective view of the reinforcing node and a schematic view of the relationship with the big bucket space in the embodiment of the present invention;
fig. 6 is a schematic perspective view of the connection between the reinforced big bucket and the flat purlin in the embodiment of the present invention;
fig. 7 is a graph comparing the hysteretic curves of the bucket and the flat purlin node in the embodiment of the present invention when the SMA screw connection is adopted and the wood tenon connection is adopted in the conventional process.
The reference numerals in the drawings mean: 1-flat plate balk, 2-rivet nut, 3-epoxy resin bonding layer, 4-SMA screw, 5-big bucket, 6-square steel backing plate, 7-radial spherical plain bearing, 8-upper nut and A-SMA self-resetting energy dissipation node.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses an ancient building timber structure bucket arch is from restoring to throne power consumption connected node, including dull and stereotyped purlin 1, fill 5, rivet nut 2, epoxy tie coat 3, SMA screw rod 4, steel backing plate 6, radial spherical plain bearing 7, upper nut 8. Wherein, the big bucket 5 is arranged above the flat plate balk 1; a square groove is formed in the upper surface of the big bucket 5, a steel base plate 6 is pre-embedded in the groove of the big bucket 5, and vertical through holes are pre-drilled in the centers of the big bucket 5 and the steel base plate 6; arranging a rivet nut 2 embedding hole on the surface of a flat square column 1, injecting epoxy resin adhesive into a square groove arranged in the center of a large bucket 5 and an embedding hole of the flat square column 1, and curing to form an adhesive layer, wherein an epoxy resin adhesive layer 3 is formed between the embedding hole of the flat square column 1 and the hexagonal rivet nut 2; a radial spherical plain bearing 7 is arranged above the steel base plate 6; the lower part of the SMA screw rod 4 is screwed with the rivet nut 2, and the upper part of the SMA screw rod sequentially passes through a vertical through hole in the big bucket 5, a steel base plate 6 and a radial spherical plain bearing 7; the upper nut 8 above the SMA screw rod 4 is screwed to apply pretension stress to the screw rod 4, and the large bucket 5 is firmly connected with the flat plate purlin 1.
As shown in figure 2, a radial spherical plain bearing 7 is arranged on the upper surface of a steel base plate 6, an outer ring of the radial spherical plain bearing is in close contact with the steel base plate, and an inner ring can rotate around a shaft so as not to restrict the rotational freedom degree of the bucket.
As shown in fig. 3, the lower part of the SMA screw 4 is connected in the rivet nut 2 by screw thread, and the bonding layer 3 formed after solidification is bonded to the outer wall of the rivet nut 2 and is bonded to the inner wall of the flat plate balk 1.
Fig. 4 shows the bucket arch reinforcing node three-dimensional schematic diagram including the upper nut 8, the radial spherical plain bearing 7, the steel base plate 6, the SMA screw rod 4 and the rivet nut 2 in the embodiment of the present invention.
As shown in fig. 5, the utility model discloses an ancient building timber structure bucket arch is from restoring to throne the connection method of power consumption connected node specifically includes following step:
step 1: when the rivet nut 2 is firmly connected with the flat plate balk 1 through the epoxy resin bonding layer 3, a buried hole is formed in the surface of the flat plate balk 1, the hexagonal rivet nut 2 is buried in advance, epoxy resin bonding agent is injected into the buried hole, and the bonding layer 3 is formed after curing.
In one embodiment, the rivet nut 2 is made of Q235 or Q345 steel components, the rivet nut 2 is 15-25mm high, 1-2mm thick and 10-20mm in inner diameter; the thickness of the epoxy resin bonding layer is 3 mm; the depth of an embedded hole on the surface of the flat purlin 1 is 15-25mm, and the diameter of the hole is more than or equal to 7-8 mm.
Step 2: a square groove is formed in the upper surface of the big bucket 5, a square steel base plate 6 is embedded in the square groove, epoxy resin binder needs to be injected between the steel base plate and the square groove, and a bonding layer is formed after curing.
In one embodiment, the square groove on the upper surface of the large bucket 5 is 5mm deep and 50mm long and wide, respectively; the square steel backing plate 6 is made of Q235 or Q345 steel components, and the length and the width of the steel backing plate 6 are respectively 50mm and the thickness is 5 mm; the thickness of the epoxy resin bonding layer is 1 mm.
And step 3: pre-drilling a vertical through hole in the centers of the big hopper 5 and the steel base plate 6 through a percussion drill;
in one embodiment, the diameter of the vertical through holes inside the big bucket 5 and inside the steel shim plate 6 is greater than or equal to 20 mm.
And 4, step 4: the lower part of the SMA screw rod 4 is screwed with the rivet nut 2, the upper part of the SMA screw rod passes through the steel backing plate 6 and the radial spherical plain bearing 7, the outer ring of the radial spherical plain bearing 7 is tightly contacted with the steel backing plate 6, and the inner ring can rotate around a shaft so as not to restrict the rotational freedom degree of the big bucket 5.
In one embodiment, the SMA screw 4 is made of a common alloy material such as nickel titanium or copper-aluminum-beryllium, and the diameter of the screw 4 is 10mm-20 mm; the material of the radial spherical plain bearing 7 is stainless steel 4Cr13, and the diameter of the inner ring of the radial spherical plain bearing 7 is more than or equal to 20 mm.
And 5: the upper nut 8 above the SMA screw rod 4 is screwed to apply pretension stress, the magnitude of the pretension stress can be adjusted, and the prestress loss in the reinforcing process is small. The stress of the SMA screw rod 4 is larger than the elastic limit stress thereof so as to exert the super-elastic performance of the SMA material.
In one embodiment, the upper nut 8 above the SMA screw rod 4 is made of a Q235 or Q345 steel component, and the upper nut 8 is 5mm high, 1-2mm thick and 10-20mm in inner diameter.
As shown in fig. 6, the connection node can be adopted to perform bucket arch reinforcement when the ancient building is subjected to frame falling maintenance or local jacking maintenance, the appearance of the bucket arch is not changed by the self-resetting energy-consumption connection node a after the reinforcement construction is completed, the residual deformation of the connection node of the big bucket 5 and the flat board purlin 1 is reduced, and the bucket arch self-resetting after the strong earthquake effect is realized.
Exert 10kN invariable vertical load at the fill upper surface, carry out the reciprocal pseudo-static force loading test of level low week, the hysteresis curve contrast picture through tenon and SMA screw rod connected node between bucket arch and the dull and stereotyped arch is seen in figure 7, and the node that adopts SMA screw rod to connect has good from the reset performance, compares its power consumption ability of tenon node stronger, and limit bearing capacity has improved 100%, demonstrates the utility model provides a from reset power consumption node have excellent anti-seismic performance and power consumption ability.
The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The ancient building wood structure bucket arch self-resetting energy-consumption connecting node is characterized by comprising a flat plate purlin (1), a big bucket (5), a rivet nut (2), an epoxy resin bonding layer (3), an SMA screw rod (4), a steel backing plate (6), a radial spherical plain bearing (7) and an upper nut (8), wherein the big bucket (5) is arranged above the flat plate purlin (1), a square groove is formed in the upper surface of the big bucket (5), and the steel backing plate (6) is embedded in the groove of the big bucket (5); vertical through holes are pre-drilled in the centers of the big hopper (5) and the steel base plate (6); a rivet nut (2) embedding hole is formed in the surface of the flat square column (1), and an epoxy resin binder is injected into a square groove formed in the center of the large bucket (5) and the embedding hole of the flat square column (1); a radial spherical plain bearing (7) is arranged above the steel base plate (6); the bottom of the SMA screw rod (4) is connected with the rivet nut (2) and screwed tightly, the upper part of the SMA screw rod sequentially penetrates through a vertical through hole in the big bucket (5), a steel base plate (6) and a radial spherical plain bearing (7), and the big bucket (5) is firmly connected with the flat square column (1) by screwing the upper nut (8) on the SMA screw rod (4).
2. The historic building wood structure bucket arch self-resetting energy consumption connecting node according to claim 1, wherein an epoxy resin bonding layer (3) is formed by an epoxy resin bonding agent injected between an embedding hole of a flat board purlin (1) and a hexagonal rivet nut (2), and the epoxy resin bonding layer formed after curing is bonded on the outer wall of the rivet nut and is bonded with the inner wall of the flat board purlin.
3. The historic building wood structure bucket arch self-resetting energy consumption connecting node according to claim 1, wherein the rivet nut (2) is a Q235 or Q345 steel component, the height of the rivet nut (2) is 15-25mm, the thickness of the rivet nut is 1-2mm, and the inner diameter of the rivet nut is 10-20 mm; the thickness of the epoxy resin bonding layer (3) is 3 mm; the depth of an embedded hole on the surface of the flat purlin (1) is 15-25mm, and the diameter of the hole is more than or equal to 7-8 mm.
4. The historic building wood structure bucket arch self-resetting energy consumption connecting node according to claim 1, wherein a square groove on the upper surface of the bucket (5) is 5mm deep and 50mm long and wide respectively; the square steel base plate (6) adopts Q235 or Q345 steel components, and the length and the width of the steel base plate (6) are respectively 50mm and the thickness is 5 mm; the thickness of the epoxy resin bonding layer is 1 mm; the diameter of the vertical through hole inside the big bucket (5) and inside the steel backing plate (6) is more than or equal to 20 mm.
5. The historic building wood structure bucket arch self-resetting energy dissipation connection node according to claim 1, wherein the SMA screw rod (4) is made of common alloy materials such as nickel titanium or copper-aluminum-beryllium, and the diameter of the screw rod (4) is 10mm-20 mm; the material of the radial spherical plain bearing (7) is stainless steel 4Cr13, and the diameter of the inner ring of the radial spherical plain bearing (7) is more than or equal to 20 mm.
6. The historic building wood structure bucket arch self-resetting energy consumption connecting node according to claim 1, wherein an upper nut (8) above the SMA screw rod (4) is a Q235 or Q345 steel component, the upper nut (8) is 5mm high, 1-2mm thick and 10-20mm in inner diameter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920655783.5U CN210032723U (en) | 2019-05-09 | 2019-05-09 | Ancient building timber structure bucket arch is from restoring to throne power consumption connected node |
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| CN201920655783.5U CN210032723U (en) | 2019-05-09 | 2019-05-09 | Ancient building timber structure bucket arch is from restoring to throne power consumption connected node |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972856A (en) * | 2019-05-09 | 2019-07-05 | 西安建筑科技大学 | A kind of historic building structure bucket arch Self-resetting energy consumption connecting node and connection method |
| CN111636628A (en) * | 2020-06-17 | 2020-09-08 | 坤茂建设集团有限公司 | Cornice bucket arch of concrete steel structure and construction method thereof |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972856A (en) * | 2019-05-09 | 2019-07-05 | 西安建筑科技大学 | A kind of historic building structure bucket arch Self-resetting energy consumption connecting node and connection method |
| CN109972856B (en) * | 2019-05-09 | 2024-05-14 | 西安建筑科技大学 | Ancient building wood structure bucket arch self-resetting energy consumption connection node and connection method |
| CN111636628A (en) * | 2020-06-17 | 2020-09-08 | 坤茂建设集团有限公司 | Cornice bucket arch of concrete steel structure and construction method thereof |
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