CN212295061U - Replaceable assembly type steel structure beam column energy consumption connecting key - Google Patents
Replaceable assembly type steel structure beam column energy consumption connecting key Download PDFInfo
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- CN212295061U CN212295061U CN202021577000.5U CN202021577000U CN212295061U CN 212295061 U CN212295061 U CN 212295061U CN 202021577000 U CN202021577000 U CN 202021577000U CN 212295061 U CN212295061 U CN 212295061U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 270
- 239000010959 steel Substances 0.000 title claims abstract description 270
- 238000005265 energy consumption Methods 0.000 title claims description 83
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 44
- 238000007493 shaping process Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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Abstract
The utility model discloses a replaceable assembly type steel structure beam column energy dissipation connecting key, which comprises a first connecting steel beam, a second connecting steel beam and two energy dissipation plates; the first connecting steel beam and the second connecting steel beam are horizontally arranged between the steel column component and the steel beam component, one end of the first connecting steel beam is fixed with the steel column component, the other end of the first connecting steel beam is hinged with one end of the second connecting steel beam, the other end of the second connecting steel beam is fixed with the steel beam component, and hinged shafts of the first connecting steel beam and the second connecting steel beam are horizontally arranged; the two energy dissipation plates are symmetrically arranged on the upper side and the lower side of the first connecting steel beam and the second connecting steel beam; two ends of the energy dissipation plate are detachably fixed with the first connecting steel beam and the second connecting steel beam respectively; the utility model forms a relatively weak area at the beam end of the joint area of the steel frame beam-connecting column through the mutually hinged connecting steel beams, thereby realizing the controllability of beam end shaping hinge; the energy dissipation plate can effectively absorb seismic capacity, avoids the steel structure beam column node from being damaged, improves the overall seismic performance of the structure, is convenient for post-seismic restoration, and has low restoration cost.
Description
Technical Field
The utility model belongs to the technical field of assembled steel construction connected node, in particular to removable assembled steel construction beam column power consumption connecting key.
Background
In the assembled steel frame structure, the structure not only needs to meet the basic bearing capacity requirement, but also meets the principles of 'strong shear and weak bending', 'strong column and weak beam' and 'strong node and weak member' in the seismic design so as to realize the seismic fortification target of 'no damage in small earthquake, repairable in middle earthquake and no fall in large earthquake'; the beam-column joint area of the assembly type steel frame structure has important significance on the whole bearing capacity and the anti-seismic performance of the structure and is a key area of the whole structure stress.
At present, the existing assembled steel frame structure beam column connection mode is various, but still has some outstanding problems: 1. when the beam is damaged, the beam end cannot form a plastic hinge, so that a strong column and a weak beam cannot be realized, and a node area cannot dissipate a large amount of energy so as to protect the main structure; 2. the problem of post-earthquake restoration is not considered during structural design, and the beam column joint area is hardly restored or needs to be detected and reinforced later at a high cost after being damaged.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the prior art, the utility model provides a removable assembled steel construction beam column power consumption connecting key to solve the regional unable dissipation energy of steel frame construction beam column connected node among the prior art, and restore the great technical problem of the degree of difficulty after shaking.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a replaceable assembly type steel structure beam column energy consumption connecting key, which is arranged at the beam end part of a steel frame structure beam column node area; the energy consumption connecting key comprises a first connecting steel beam, a second connecting steel beam and two energy consumption plates;
the first connecting steel beam and the second connecting steel beam are horizontally arranged between the steel column component and the steel beam component, one end of the first connecting steel beam is fixedly connected with the steel column component, the other end of the first connecting steel beam is hinged with one end of the second connecting steel beam, the other end of the second connecting steel beam is fixedly connected with the steel beam component, and a hinged shaft of the first connecting steel beam and the second connecting steel beam is horizontally arranged;
the two energy dissipation plates are horizontally arranged in parallel and symmetrically arranged on the upper side and the lower side of the first connecting steel beam and the second connecting steel beam; one end of the energy dissipation plate is detachably fixed with the first connecting steel beam, and the other end of the energy dissipation plate is detachably fixed with the second connecting steel beam.
Furthermore, the hinged ends of the first connecting steel beam and the second connecting steel beam are both arranged to be arc-shaped structures, hinged bolt holes are formed in the centers of the arc-shaped structures, and hinged bolts penetrate through the hinged bolt holes horizontally.
Further, first connection girder steel and second connection girder steel all adopt H shaped steel, the vertical setting of web of H shaped steel.
Furthermore, the energy consumption plate comprises a first connecting section, an energy consumption section and a second connecting section; the first connecting section and the second connecting section are respectively arranged at two ends of the energy consumption section, and the energy consumption section is arranged right opposite to a hinged shaft of the connecting steel beam; the first connecting section is detachably fixed with the flange plate of the first connecting steel beam, and the second connecting section is detachably fixed with the flange plate of the second connecting steel beam.
Furthermore, a plurality of strip-shaped holes are uniformly formed in the energy consumption section, and the long axis direction of each strip-shaped hole is consistent with the axis direction of the steel beam component.
Furthermore, the first connecting section is connected with the flange plate of the first connecting steel beam through bolts, and the second connecting section is connected with the flange plate of the second connecting steel beam through bolts.
Further, a plurality of transverse rib plates are arranged on the steel column component; the transverse rib plate is horizontally arranged and corresponds to the flange plate of the first connecting steel beam.
Furthermore, the first connecting steel beam and the steel column member are welded and fixed, and the second connecting steel beam and the steel beam member are welded and fixed.
Furthermore, the hinge bolt is a high-strength bolt.
Compared with the prior art, the beneficial effects of the utility model are that:
the replaceable assembly type steel structure beam column energy consumption connecting key of the utility model is characterized in that two connecting steel beams hinged with each other are arranged, so that a relatively weak area is formed at the beam end of a steel frame beam column joint area; when the steel beam member is damaged, the shaping hinge at the beam end is ensured to be arranged in the relatively weak area, and the controllability of the shaping hinge at the beam end is realized; the energy dissipation plates are arranged above and below the connecting steel beams, so that the energy dissipation plates can effectively absorb earthquake capacity, the beam-column joints of the steel frame structure are prevented from being damaged, and the overall earthquake resistance of the structure is improved; the energy dissipation plate is detachably connected with the connecting steel beam, so that the energy dissipation plate is detached and replaced, the post-earthquake restoration is facilitated, and the restoration and reinforcement cost is obviously reduced.
Furthermore, the hinged ends of the connecting steel beams are arranged to be of an arc-shaped structure, so that arc-shaped hinges are formed between the connecting steel beams, and the arc-shaped hinges can rotate and deform under the stress condition, so that the node areas of the beam columns are not damaged by shearing force, and the structural damage is reduced; the hinged end is arranged to be in the arc shape, so that the arc-shaped hinge can rotate conveniently, and stress concentration is avoided.
Furthermore, the connecting steel beam adopts H-shaped steel, the H-shaped steel has good integrity and can be reliably bonded with concrete so as to provide reliable support for the connecting key, the cost is lower, the processing difficulty is lower, and the construction is convenient.
Furthermore, the end part of the hinged shaft is a part which is mainly deformed when the energy consumption key is stressed, and the energy consumption section of the energy consumption plate is arranged right opposite to the hinged shaft, so that the energy consumption plate can better play the role of deformation energy consumption; simultaneously, with the energy consumption board setting in the top and bottom, when the hinge rotated, the energy consumption board took place to warp along the less strong thickness direction, compares and sets up the realization that can be better that warp along stronger width direction at both sides, and the energy consumption board is difficult for the unstability, and structural stability is higher.
Furthermore, the energy consumption section is provided with the plurality of strip-shaped holes, so that the energy consumption plate is weakened, the deformation capacity of the energy consumption plate is improved, the energy consumption capacity of the energy consumption connecting key is increased, the energy consumption connecting key is guaranteed to be damaged earlier than a steel beam member, and the steel beam member is protected.
Furthermore, the connection section of the energy dissipation plate is connected with the connection steel beam through the bolts, so that the energy dissipation plate is convenient to maintain and replace, and the energy dissipation plate is simple in structure and good in stability.
Furthermore, the transverse rib plates are arranged in the node areas of the steel column members, so that the steel column is locally reinforced, and the web instability of the steel column members can be prevented.
Furthermore, the hinge bolt is mainly sheared, and the hinge bolt is a high-strength bolt, so that reliable connection inside the connecting key is effectively guaranteed.
The replaceable assembly type steel structure beam column energy consumption connecting key has the advantages that the two connecting steel beams hinged with each other are adopted, the relatively weak area is formed at the hinged part of the connecting steel beams, the shaping hinge at the beam end is effectively controlled to be present in the relatively weak area, the controllability of the shaping hinge is realized, and the damage to the node area of the steel frame structure beam column is avoided; the upper and lower parts of the connecting steel beam are respectively provided with two energy dissipation plates, and the energy dissipation plates are provided with the strip-shaped holes, so that the energy dissipation plates are partially weakened, the deformation capacity of the energy dissipation plates is improved, a large amount of seismic energy can be absorbed, the beam-column structure is subjected to less seismic action, the beam-column member is protected, and the overall seismic performance of the structure is improved; the energy dissipation plate is fixed with the connecting steel beam through the bolts, is convenient to detach, has replaceability, is convenient to repair after shaking, and can obviously reduce the repair and reinforcement cost.
Drawings
Fig. 1 is a front view of a replaceable assembly type steel structure beam-column energy consumption connecting key according to the present invention;
fig. 2 is a top view of the replaceable assembly steel structure beam-column energy consumption connecting key according to the present invention;
fig. 3 is a cross-sectional view of a replaceable assembly steel structure beam-column energy consumption connecting key according to the present invention;
fig. 4 is an assembly plan view of the replaceable assembly type steel structure beam-column energy consumption connecting key according to the present invention;
fig. 5 is an assembly three-dimensional schematic view of a removable assembled steel structure beam column power consumption connecting key of the utility model.
The steel column comprises 1 a first connecting steel beam, 2 a second connecting steel beam, 3 energy dissipation plates, 4 hinge bolts, 5 fixing bolts, 6 transverse rib plates and 7 steel column members, wherein the steel column members are connected with the first connecting steel beam; 31 an upper energy consumption plate and 32 a lower energy consumption plate; 301 a first connection section, 302 a power consuming section, 303 a second connection section.
Detailed Description
In order to make the technical problem solved by the present invention, technical solution and beneficial effect are more clearly understood, and the following specific embodiments are right for the present invention to proceed further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in the attached drawings 1-5, the utility model provides a replaceable assembly type steel structure beam column energy consumption connecting key, which is arranged at the beam end part of the steel frame structure beam column joint area; the energy consumption connecting key comprises a first connecting steel beam 1, a second connecting steel beam 2, two energy consumption plates 3 and a plurality of transverse rib plates 6.
The first connecting steel beam 1 and the second connecting steel beam 2 are horizontally arranged between the steel column member 7 and the steel beam member, one end of the first connecting steel beam 1 is fixedly welded with the steel column member 7, the other end of the first connecting steel beam 1 is hinged with one end of the second connecting steel beam 2, and the other end of the second connecting steel beam 2 is fixedly welded with the steel beam member; the hinge shafts of the first connecting steel beam 1 and the second connecting steel beam 2 are horizontally arranged, and the first connecting steel beam 1 and the second connecting steel beam 2 are hinged to form a relatively weak area at the beam end, so that when a steel beam component is damaged, the shaping hinge of the beam end is ensured to be in the relatively weak area, the controllability of the shaping hinge of the beam end is realized, and the brittle failure of the beam column joint area of the steel frame structure is avoided.
The two energy dissipation plates 3 are horizontally arranged in parallel and symmetrically arranged on the upper side and the lower side of the first connecting steel beam 1 and the second connecting steel beam 2; the upper energy dissipation plate 31 is horizontally arranged on the upper sides of the first connecting steel beam 1 and the second connecting steel beam 2, one end of the upper energy dissipation plate 31 is detachably fixed with the upper flange of the first connecting steel beam 1, and the other end of the upper energy dissipation plate 31 is detachably fixed with the upper flange of the second connecting steel beam 2; the lower energy dissipation plate 32 is horizontally arranged at the lower sides of the first connecting steel beam 1 and the second connecting steel beam 2, one end of the lower energy dissipation plate 32 is detachably fixed with the lower flange of the first connecting steel beam 1, and the other end of the lower energy dissipation plate 32 is detachably fixed with the lower flange of the second connecting steel beam 2; the middle part of the energy dissipation plate 3 is provided with a deformation area, and the deformation area of the energy dissipation plate 3 is arranged corresponding to the hinged shaft of the connecting steel beam.
The energy consumption plate 3 comprises a first connecting section 301, an energy consumption section 302 and a second connecting section 303, the first connecting section 301 and the second connecting section 303 are respectively arranged at two ends of the energy consumption section 302, the energy consumption section 302 is a deformation area of the energy consumption plate 3, and the energy consumption section 302 is arranged right opposite to a hinge shaft connected with a steel beam; the first connecting section 301 and the flange plate of the first connecting steel beam 1 are detachably fixed through the fixing bolt 5, and the second connecting section 303 and the flange plate of the second connecting steel beam 2 are detachably fixed through the fixing bolt 5.
Evenly be provided with first bolt hole on the first linkage segment 301, be provided with the second bolt hole that corresponds with first bolt hole on the flange plate of first connecting girder steel 1, fixing bolt 5 runs through first bolt hole and second bolt hole in proper order, with the flange plate fixed connection of first linkage segment 301 and first connecting girder steel 1. Evenly be provided with the third bolt hole on the second linkage segment 303, be provided with the fourth bolt hole that corresponds with the third bolt hole on the flange plate of second connection girder steel 2, fixing bolt 5 runs through third bolt hole and fourth bolt hole in proper order, is connected second linkage segment 303 and second connection girder steel 2's flange plate fixed connection. The utility model discloses in, can dismantle the fixed with being connected the girder steel through fixing bolt with the power consumption board, the power consumption board of being convenient for is dismantled, has and shakes removable shape in back, is convenient for shake the back and restores, can obviously reduce and restore the reinforcement cost.
A plurality of strip-shaped holes are uniformly formed in the energy consumption section 302, and the long axis direction of each strip-shaped hole is consistent with the axis direction of the steel beam component; two energy dissipation plates 3 are arranged on the upper portion and the lower portion of the connecting steel beam respectively, and the strip-shaped holes are formed in the energy dissipation plates 3, so that the energy dissipation plates 3 are partially weakened, the deformation capacity of the energy dissipation plates 3 is improved, a large amount of seismic energy can be absorbed, the beam-column structure is subjected to less seismic action, the beam-column member is protected, and the overall seismic performance of the structure is improved.
The hinged ends of the first connecting steel beam 1 and the second connecting steel beam 2 are both arranged to be circular arc structures, a hinged bolt hole is formed in the center of each circular arc structure, a hinged bolt 4 horizontally penetrates through each hinged bolt hole, and the first connecting steel beam 1 and the second connecting steel beam 2 are hinged and fixed through the hinged bolts 4; preferably, the first connecting steel beam 1 and the second connecting steel beam 2 both adopt H-shaped steel, and a web plate of the H-shaped steel is vertically arranged; the hinge bolt 4 is a high-strength bolt.
The steel column member 7 is provided with a plurality of transverse rib plates 6, and the transverse rib plates 6 are horizontally arranged and are arranged corresponding to flange plates of the first connecting steel beam 1.
Principle of operation
The replaceable assembly type steel structure beam column energy consumption connecting key is characterized in that the connecting steel beam and the energy consumption plate are combined to form the energy consumption connecting key through the beam end part of the steel frame structure beam column joint area, and the two connecting steel beams which are hinged with each other are arranged to form a relatively weak area at the beam end part of the steel frame connecting beam column joint area; when the steel beam member is damaged, the shaping hinge at the beam end is ensured to be arranged in the relatively weak area, and the controllability of the shaping hinge at the beam end is realized; the energy consumption plates are arranged above and below the connecting steel beam, the hinge is rotationally deformed under the action of an earthquake, and the energy consumption section is deformed at the moment, so that energy consumption is realized; stress is mainly distributed on two sides of the opening of the energy consumption plate, along with the gradual increase of the stress, the energy consumption section of the energy consumption plate firstly enters a yield state, consumes a part of energy and continues to perform energy consumption deformation, and at the moment, the stress is gradually transferred to the weak part of the web plate; finally, the energy dissipation plates of the energy dissipation connecting keys are in a yield state, the energy dissipation plates can effectively absorb earthquake capacity, the beam-column joints of the steel frame structure are prevented from being damaged, and the overall earthquake resistance of the structure is improved; the energy dissipation plate is detachably connected with the connecting steel beam, so that the energy dissipation plate is detached and replaced, the post-earthquake restoration is facilitated, and the restoration and reinforcement cost is obviously reduced.
Examples
The embodiment provides a replaceable assembly type steel structure beam-column energy consumption connecting key which comprises a left connecting steel beam and a right connecting steel beam, wherein the left connecting steel beam and the right connecting steel beam are hinged and fixed through a hinge bolt; wherein, the connecting steel beam of the near post on the left side is shorter, and the connecting steel beam on the right side is approximately isometric with the post interval. Respectively cutting the 200-plus-400 mm positions of the hinged ends of the left connecting steel beam and the right connecting steel beam, cutting the upper flange and the lower flange of the left connecting steel beam and the right connecting steel beam, and cutting the web into an arc-shaped structure; and then, the corresponding positions of the web plate end parts of the left and right connecting steel beams are provided with hinged bolt holes, so that the upper and lower alignment of the left and right connecting steel beams is ensured when the two connecting steel beams are connected through the hinged bolt holes by utilizing the hinged bolts.
In the embodiment, energy-consuming steel plates are additionally arranged on the flange plates of the left connecting steel beam and the right connecting steel beam, and the energy-consuming steel plates and the flange plates of the connecting steel beams are detachably fixed through fixing bolts; the connecting structure comprises a web plate, a left connecting steel beam, a right connecting steel beam, a left connecting steel beam and a right; the left end and the right end of the energy-consuming steel plate are provided with bolt holes, the bolt holes are arranged in two rows, and each row is provided with three bolt holes; bolt holes in the energy consumption steel plate are arranged corresponding to bolt holes in the connecting steel beams, so that the energy consumption steel plate can be connected with the left steel beam and the right steel beam through bolts; and the middle part of the energy consumption steel plate is provided with a long-strip-shaped hole to weaken the energy consumption steel plate.
Assembly process
Firstly, welding the left end of a left connecting steel beam with a steel column member, and welding along the flange and the two sides of a web plate, thereby realizing the reliable connection of the beam-column member; and the right side is connected with the steel beam and the steel beam component in the same way.
Then, the hinge bolt holes of the left connecting steel beam are aligned with the hinge bolt holes of the right connecting steel beam, the hinge bolts penetrate through the hinge bolt holes, the nuts are screwed, and the left connecting steel beam and the right connecting steel beam are hinged.
Finally, the energy-consuming steel plate is arranged on the flange plates of the two connecting steel beams, screw holes on two sides of the energy-consuming steel plate are aligned, a bolt penetrates through the bolt, and a nut is screwed tightly; when the nut is fastened, the middle, the two sides and the opposite angles are sequentially fastened in a clockwise staged manner; generally, the two-stage fastening is carried out, wherein about 50% of torque is screwed in the first step; the second step screws 100% of the torque.
According to the fabricated steel structure energy dissipation connecting key, the hinge is arranged between the end parts of the left connecting steel beam and the right connecting steel beam, and the energy dissipation steel plates are additionally arranged above and below the hinge; the end parts of the left and right connecting steel beams are cut into circular arc structures, hinged bolt holes are formed in the end parts, and hinged connection is carried out through hinged bolts; the middle parts of the upper energy-consuming steel plate and the lower energy-consuming steel plate are provided with strip-shaped holes, bolt holes are reserved at two ends of the upper energy-consuming steel plate and the lower energy-consuming steel plate, and the energy-consuming steel plates are connected with the connecting steel beams through bolts; the left connecting steel beam and the right connecting steel beam are connected with the steel beam component and the steel column component through welding.
In order to fully exert the energy consumption performance of the energy consumption connecting key, the energy consumption connecting key is arranged at the beam end part of the beam column joint area; the two connecting steel beams are hinged, so that the hinged part is weaker than the whole steel beam component, and the shaping hinge of the steel beam is controlled to appear at the energy consumption part; the middle part of the energy consumption plate is weakened by opening a hole, so that the deformation capacity of the energy consumption plate is improved, the energy consumption capacity of the member can be improved, the energy consumption member is damaged earlier than the beam member, and the beam member is protected; the utility model has the advantages of good ductility, high bearing capacity, strong energy consumption capability, and being replaceable after the earthquake.
The above embodiment is only one of the embodiments that can realize the technical solution of the present invention, and the scope of the present invention is not limited only by the embodiment, but also includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention.
Claims (9)
1. A replaceable assembly type steel structure beam-column energy consumption connecting key is characterized in that the energy consumption connecting key is arranged at the beam end part of a steel frame structure beam-column joint area; the energy consumption connecting key comprises a first connecting steel beam (1), a second connecting steel beam (2) and two energy consumption plates (3);
the steel column structure is characterized in that a first connecting steel beam (1) and a second connecting steel beam (2) are horizontally arranged between a steel column component (7) and a steel beam component, one end of the first connecting steel beam (1) is fixedly connected with the steel column component (7), the other end of the first connecting steel beam is hinged with one end of the second connecting steel beam (2), the other end of the second connecting steel beam (2) is fixedly connected with the steel beam component, and a hinged shaft of the first connecting steel beam (1) and the second connecting steel beam (2) is horizontally arranged;
the two energy dissipation plates (3) are horizontally arranged in parallel and symmetrically arranged on the upper side and the lower side of the first connecting steel beam (1) and the second connecting steel beam (2); one end of the energy dissipation plate (3) is detachably fixed with the first connecting steel beam (1), and the other end of the energy dissipation plate is detachably fixed with the second connecting steel beam (2).
2. The replaceable assembly type steel structure beam-column energy consumption connecting key is characterized in that the hinged ends of the first connecting steel beam (1) and the second connecting steel beam (2) are both arranged to be in an arc-shaped structure, a hinged bolt hole is formed in the center of the arc-shaped structure, and a hinged bolt (4) penetrates through the hinged bolt hole horizontally.
3. The replaceable assembly type steel structure beam-column energy consumption connecting key is characterized in that the first connecting steel beam (1) and the second connecting steel beam (2) are both H-shaped steel, and a web plate of the H-shaped steel is vertically arranged.
4. The replaceable assembly type steel structure beam-column energy consumption connecting key is characterized in that the energy consumption plate (3) comprises a first connecting section (301), an energy consumption section (302) and a second connecting section (303); the first connecting section (301) and the second connecting section (303) are respectively arranged at two ends of the energy consumption section (302), and the energy consumption section (302) is arranged right opposite to a hinged shaft connected with the steel beam; the first connecting section (301) and the flange plate of the first connecting steel beam (1) are detachably fixed, and the second connecting section (303) and the flange plate of the second connecting steel beam (2) are detachably fixed.
5. The replaceable assembly type steel structure beam-column energy consumption connecting key is characterized in that a plurality of strip-shaped holes are uniformly formed in the energy consumption section (302), and the long axis direction of each strip-shaped hole is consistent with the axial direction of the steel beam component.
6. The replaceable assembly type steel structure beam-column energy consumption connecting key is characterized in that the first connecting section (301) is connected with the flange plate of the first connecting steel beam (1) through bolts, and the second connecting section (303) is connected with the flange plate of the second connecting steel beam (2) through bolts.
7. The replaceable assembly type steel structure beam-column energy consumption connecting key is characterized in that a plurality of transverse rib plates (6) are arranged on a steel column component (7); the transverse rib plate (6) is horizontally arranged and corresponds to the flange plate of the first connecting steel beam (1).
8. The replaceable assembly type steel structure beam-column energy consumption connection key as claimed in claim 1, wherein the first connection steel beam (1) and the steel column member (7) are welded and fixed, and the second connection steel beam (2) and the steel beam member are welded and fixed.
9. The replaceable assembly type steel structure beam-column energy consumption connecting key is characterized in that the hinge bolt (4) is a high-strength bolt.
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| CN111749335A (en) * | 2020-07-31 | 2020-10-09 | 西安建筑科技大学 | Assembled steel construction beam column power consumption connecting key |
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| CN111749335A (en) * | 2020-07-31 | 2020-10-09 | 西安建筑科技大学 | Assembled steel construction beam column power consumption connecting key |
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Assignee: Shaanxi Nitya New Materials Technology Co.,Ltd. Assignor: XIAN University OF ARCHITECTURE AND TECHNOLOG Contract record no.: X2021980012797 Denomination of utility model: A replaceable fabricated steel structure beam column energy dissipation connecting key Granted publication date: 20210105 License type: Common License Record date: 20211119 Assignee: CHINA RAILWAY FIRST GROUP CO.,LTD. CONSTRUCTION & INSTALLATION ENGINEERING CO.,LTD. Assignor: XIAN University OF ARCHITECTURE AND TECHNOLOG Contract record no.: X2021980012947 Denomination of utility model: A replaceable fabricated steel structure beam column energy dissipation connecting key Granted publication date: 20210105 License type: Common License Record date: 20211122 |
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Assignee: Shaanxi Nitya New Materials Technology Co.,Ltd. Assignor: XIAN University OF ARCHITECTURE AND TECHNOLOG Contract record no.: X2021980012797 Date of cancellation: 20240320 |
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Assignee: CHINA RAILWAY FIRST GROUP CO.,LTD. CONSTRUCTION & INSTALLATION ENGINEERING CO.,LTD. Assignor: XIAN University OF ARCHITECTURE AND TECHNOLOG Contract record no.: X2021980012947 Date of cancellation: 20240410 |
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| EC01 | Cancellation of recordation of patent licensing contract |