US20150159369A1

US20150159369A1 - Energy-dissipating junction assembly and shockproof structure using the same

Info

Publication number: US20150159369A1
Application number: US14/300,518
Authority: US
Inventors: Sheng-Jin Chen; Ching-Yuan Huang
Original assignee: China Steel Corp
Current assignee: China Steel Corp
Priority date: 2013-12-10
Filing date: 2014-06-10
Publication date: 2015-06-11
Also published as: JP2015113703A; TW201522808A; TWI509167B

Abstract

An energy-dissipating junction assembly includes a junction plate and a plurality of bolts. The junction plate includes two junction sections and an energy-dissipating section. The two junction sections are used to connect a structure body. The energy-dissipating section is located between the two junction sections and has a plurality of slots, wherein each slot has a length. The bolts are separately disposed at each slot of the energy-dissipating section, so as to connect the energy-dissipating section to the structure body. Each bolt has a head portion, and an external diameter of each head portion is smaller than the length of each slot. The disclosure can convert external force (such as acting force of earthquakes or typhoons) acting on the structure body into uniform tensile force and pressure, so as to avoid generation of stress concentration to damage the structure body.

Description

FIELD

The disclosure relates to an energy-dissipating shockproof structure, more particular to an energy-dissipating junction assembly and a shockproof structure using the same.

BACKGROUND

It is known that constructional steel structures or steel bridge columns (beams) often collapsed or are damaged because of being hit by earthquakes or typhoons, leading to difficult restoration.
FIG. 1 illustrates a schematic view for a known steel bridge column (beam) structure subjected to horizontal earthquake force. FIG. 2 illustrates a bending moment diagram for a known steel bridge column (beam) structure subjected to horizontal earthquake force. With reference to FIG. 1 and FIG. 2, when a known is steel bridge column (beam) structure 60 is subjected to the horizontal earthquake force, a great acting bending moment may be generated at a bottom of a steel bridge column 61, leading to generation of flexural deformation and local buckling of the steel bridge column 61, so that the steel bridge column 61 breaks, and an anchorage part of the steel bridge column 61 is deeply buried underground; and therefore, it is also difficult to detect damage conditions of the steel bridge column 61 after earthquakes. Furthermore, the steel bridge column 61 only can generate a mechanical conventional plastic hinge in an ideal state, and therefore, its shockproof capability is also limited.
In addition, a reason for damages of the known constructional steel structure often lies in that acting force of earthquakes concentrates at a beam-column joint area, leading to breakage or collapse of the structure.
Damages of the foregoing structure may cause severe disasters and substantial property losses. Therefore, it is necessary to provide an energy-dissipating junction assembly and a shockproof structure to solve the foregoing problems.

SUMMARY OF THE INVENTION

In accordance with one aspect of the present disclosure, an energy-dissipating junction assembly includes a junction plate and a plurality of bolts. The junction plate includes two junction sections and an energy-dissipating section. The two junction sections are used to connect a structure body. The energy-dissipating section is located between the two junction sections and has a plurality of slots. Each slot has a length. The bolts are separately disposed at each slot of the energy-dissipating section, so as to connect the energy-dissipating section to the structure body. Each bolt has a head portion, and an external diameter of each head portion is smaller than the length of each slot.
In accordance with another aspect of the present disclosure, a shockproof structure includes a structure body and an energy-dissipating junction assembly. The structure body has a selected energy-dissipating area. The energy-dissipating junction assembly includes a junction plate and a plurality of bolts. The junction plate includes two junction sections and an energy-dissipating section. The two junction sections are connected to the selected energy-dissipating area of the structure body. The energy-dissipating section is located between the two junction sections and has a plurality of slots. Each slot has a length. The bolts are separately disposed at each slot of the energy-dissipating section, so as to connect the energy-dissipating section to the selected energy-dissipating area. Each bolt has a head portion, and an external diameter of each head portion is smaller than the length of each slot.
The energy-dissipating junction assembly of the present disclosure can convert external force (such as acting force of earthquakes or typhoons) acting on the structure body into uniform tensile force and pressure, so as to avoid generation of stress concentration to damage the structure body. In addition, with a constraint role played by the bolts on the energy-dissipating section of the junction plate, out-of-plane deformation of the structure body can be inhibited.

BRIEF DESCRIPTION OF THE DRAWINGS

Aspects of the present disclosure are understood from the following detailed description when read with the accompanying figures. It is emphasized that, in accordance with the standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or reduced for clarity of discussion.

FIG. 1 illustrates a schematic view for a known steel bridge column (beam) structure subjected to horizontal earthquake force.

FIG. 2 illustrates a bending moment diagram for a known steel bridge column (beam) structure subjected to horizontal earthquake force.

FIG. 3 illustrates a perspective view of an energy-dissipating junction assembly in accordance with a first embodiment of the present disclosure.

FIG. 4 illustrates a top view of a junction plate in accordance with a first embodiment of the present disclosure.

FIG. 5 illustrates a schematic view of an energy-dissipating junction assembly in connection to a structure body in accordance with a first embodiment of the present disclosure.

FIG. 6 illustrates a perspective view of an energy-dissipating junction assembly in accordance with a second embodiment of the present disclosure.

FIG. 7 illustrates a perspective view of an energy-dissipating junction assembly in accordance with a third embodiment of the present disclosure.

FIG. 8 illustrates a perspective view of an energy-dissipating junction assembly in accordance with a fourth embodiment of the present disclosure.

FIG. 9 illustrates a schematic view of a shockproof structure in accordance with a first embodiment of the present disclosure.

FIG. 10 shows a bending moment strength distribution of a shockproof structure in accordance with a first embodiment of the present disclosure.

FIG. 11 illustrates a schematic view of a shockproof structure in accordance with a second embodiment of the present disclosure.

FIG. 12 illustrates a schematic view of a shockproof structure in accordance with a third embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

It is to be understood that the following disclosure provides many different embodiments or examples, for implementing different features of various embodiments. Specific examples of components and arrangements are described below to simplify the present disclosure. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided so that this description will be thorough and complete, and will fully convey the present disclosure to those of ordinary skill in the art. It will be apparent, however, that one or more embodiments may be practiced without these specific details.
In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It will be understood that singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms; such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
FIG. 3 illustrates a perspective view of an energy-dissipating junction assembly in accordance with a first embodiment of the present disclosure. FIG. 4 illustrates a top view of a junction plate in accordance with a first embodiment of the present disclosure. FIG. 5 illustrates a schematic view of an energy-dissipating junction assembly in connection to a structure body in accordance with a first embodiment of the present disclosure.
Referring to FIGS. 3, 4, and 5, an energy-dissipating junction assembly 10 in accordance with the first embodiment of the present disclosure includes a junction plate 12, a plurality of junction bolts 14, and a plurality of bolts 16.
The junction plate 12 includes two junction sections 122 and an energy-dissipating section 124. The two junction sections 122 are used to connect a structure body 50, and the structure body 50 is selected from one of the following: a steel beam, a steel column, a building, a bridge, a bridge column, and a combination of at least two of the foregoing. In this embodiment, the junction plate 12 is a steel plate, and each junction section 122 has a plurality of circular junction holes 122H.
The energy-dissipating section 124 is located between the two junction sections 122. The area of the energy-dissipating section 124 is greater than that of each junction section 122, and the energy-dissipating section 124 has a plurality of slots 124H. In some embodiments, the area of the energy-dissipating section 124 may be smaller than that of each junction section 122.
In this embodiment, the slots 124H are arranged regularly, and the size of each slot 124H is the same. Furthermore, the size of each slot 124H is greater than that of each circular junction hole 122H; and preferably, a spacing G2 between the slots 124H is greater than a spacing G1 between the circular junction holes 122H.
In this embodiment, each slot 124H is a long slot, and therefore, each slot 124H has a length L and a width W. Preferably, the length L of each slot 124H is greater than a diameter D of each circular junction hole 122H, and the width W of each slot 124H is greater than or equal to the diameter D of each circular junction hole 122H.
The junction bolts 14 are separately disposed at each circular junction hole 122H of each junction section 122, so as to connect each junction section 122 to the structure body 50. In this embodiment, the number of the junction bolts 14 on each junction section 122 is the same.
The bolts 16 are separately disposed at each slot 124H of the energy-dissipating section 124, so as to connect the energy-dissipating section 124 to the structure body 50. In this embodiment, each bolt 16 has a head portion 162; and an external diameter d of each head portion 162 is smaller than the length L of each slot 124H, but is greater than the width W of each slot 124H. With a constraint role played by the bolts 16 on the energy-dissipating section 124 of the junction plate 12, out-of-plane deformation of the structure body 50 can be inhibited. In addition, the head portion 162 of each bolt 16 can be a nut.
The energy-dissipating junction assembly 10 of the present disclosure can convert external force (such as acting force of earthquakes or typhoons) acting on the structure body 50 into uniform tensile force and pressure, so as to avoid generation of stress concentration to damage the structure body 50.
FIG. 6 illustrates a perspective view of an energy-dissipating junction assembly in accordance with a second embodiment of the present disclosure.
Referring to FIGS. 3 and 6, structural features of an energy-dissipating junction assembly in accordance with the second embodiment of the present disclosure are basically the same as those of the first embodiment, and a difference therebetween only lies in that the length L of each slot 124H is greater than or equal to twice of the external diameter 2 d of each head portion 162 of each bolt 16, so that each slot 124H can be disposed with a plurality of bolts 16.
FIG. 7 illustrates a perspective view of an energy-dissipating junction assembly in accordance with a third embodiment of the present disclosure.
Referring to FIGS. 3, 4, and 7, structural features of an energy-dissipating junction assembly in accordance with the third embodiment of the present disclosure are basically the same as those of the first embodiment, and a difference therebetween only lies in that the two junction sections 122 omit to form the circular junction holes 122H and omit to use the junction bolts 14, and the two junction sections 122 are connected to the structure body 50 in a welding manner
FIG. 8 illustrates a perspective view of an energy-dissipating junction assembly in accordance with a fourth embodiment of the present disclosure.
Referring to FIGS. 7 and 8, structural features of an energy-dissipating junction assembly in accordance with the fourth embodiment of the present disclosure are basically the same as those of the third embodiment, and a difference therebetween only lies in that the length L of each slot 124H is greater than or equal to twice of the external diameter 2 d of each head portion 162 of each bolt 16, so that each slot 124H can be disposed with a plurality of bolts 16.
FIG. 9 illustrates a schematic view of a shockproof structure in accordance with a first embodiment of the present disclosure.
As shown in FIG. 9, a shockproof structure 20 in accordance with the first embodiment of the present disclosure includes a structure body 22 and an energy-dissipating junction assembly 24.
In this embodiment, the structure body 22 is a bridge column, and the structure body 22 has a selected energy-dissipating area 22A. The size of the selected energy-dissipating area 22A is determined according to a shockproof demand, and the strength of the selected energy-dissipating area 22A is designed to be a little lower than the acting force generated by earthquakes.
The energy-dissipating junction assembly 24 includes a junction plate 25, a plurality of junction bolts 26, and a plurality of bolts 27.
The junction plate 25 includes two junction sections 252 and an energy-dissipating section 254. The two junction sections 252 are connected to the selected energy-dissipating area 22A of the structure body 22. In this embodiment, the area of each junction section 252 is the same, and each junction section 252 has a plurality of circular junction holes 252H; preferably, the number of the circular junction holes 252H of each junction section 252 is the same, and a spacing G1 between the circular junction holes 252H is also the same. The energy-dissipating section 254 is located between the two junction sections 252. The area of the energy-dissipating section 254 is greater than that of each junction section 252, and the energy-dissipating section 254 has a plurality of slots 254H.
In this embodiment, the slots 254H are arranged regularly, and the size of each slot 254H is the same. In addition, the size of each slot 254H is greater than that of each circular junction hole 252H; and preferably, a spacing G2 between the slots 254H is greater than a spacing G1 between the circular junction holes 252H. Furthermore, in this embodiment, each slot 254H is a long slot, and therefore, each slot 124H has a length L and a width W. Preferably, the length L of each slot 254H is greater than a diameter D of each circular junction holes 252H, and the width W of each slot 254H is greater than or equal to the diameter D of each circular junction hole 252H.
The junction bolts 26 are separately disposed at each circular junction hole 252H of each junction section 252, so as to connect each junction section 252 to the selected energy-dissipating area 22A. In some embodiments, each junction section 252 may be connected to the selected energy-dissipating area 22A in a welding manner.
The bolts 27 are separately disposed at each slot 254H of the energy-dissipating section 254, so as to connect the energy-dissipating section 254 to the selected energy-dissipating area 22A. In this embodiment, each bolt 27 has a head portion 272; and an external diameter d of each head portion 272 is smaller than the length L of each slot 254H. With a constraint role played by the bolt 27 on the energy-dissipating section 254 of the junction plate 25, out-of-plane deformation of the selected energy-dissipating area 22A can be inhibited.
FIG. 10 shows a bending moment strength distribution of a shockproof structure in accordance with a first embodiment of the present disclosure.
It is proved by a result in FIG. 10 that the bending moment caused by horizontal earthquake force on the shockproof structure 20 can be effectively and uniformly transmitted by the junction plate 25, and most of earthquake energy is dissipated by the energy-dissipating section 254 of the junction plate 25.
FIG. 11 illustrates a schematic view of a shockproof structure in accordance with a second embodiment of the present disclosure.
As shown in FIG. 11, structural features of a shockproof structure in accordance with the second embodiment of the present disclosure are basically the same as those of the first embodiment, and a difference therebetween only lies in that the structure body 22 is a combination of a steel beam 22S and a box-type steel column 22B. The selected energy-dissipating area 22A is a beam-column joint area, and the energy-dissipating junction assembly 24 is disposed at the beam-column joint area.
FIG. 12 illustrates a schematic view of a shockproof structure in accordance with a third embodiment of the present disclosure.
As shown in FIG. 12, structural features of a shockproof structure in accordance with the third embodiment of the present disclosure are basically the same as those of the second embodiment, and a difference therebetween only lies in that the structure body 22 is a combination of the steel beam 22S and an H-type steel column 22H.
Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, and composition of matter, means, methods and steps described in the specification. As those skilled in the art will readily appreciate form the present disclosure, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present disclosure.
Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, and compositions of matter, means, methods or steps. In addition, each claim constitutes a separate embodiment, and the combination of various claims and embodiments are within the scope of the invention.

Claims

What is claimed is:

1. An energy-dissipating junction assembly, comprising:

a junction plate including two junction sections and an energy-dissipating section, wherein the two junction sections are used to connect a structure body; the energy-dissipating section is located between the two junction sections and has a plurality of slots; and each slot has a length; and

a plurality of bolts separately disposed at each slot of the energy-dissipating section for connecting the energy-dissipating section to the structure body, wherein each bolt has a head portion, and an external diameter of each head portion is smaller than the length of each slot.

2. The energy-dissipating junction assembly of claim 1, wherein the structure body is selected from one of the following: a steel beam, a steel column, a building, a bridge, a bridge column, and a combination of at least two of the foregoing.

3. The energy-dissipating junction assembly of claim 1, wherein the two junction sections of the junction plate are connected to the structure body in a welding manner.

4. The energy-dissipating junction assembly of claim 1, further comprising a plurality of junction bolts, wherein each junction section has a plurality of circular junction holes, and the junction bolts are separately disposed at each circular junction hole for connecting each junction section to the structure body.

5. The energy-dissipating junction assembly of claim 4, wherein the number of the junction bolts on each junction section is the same.

6. The energy-dissipating junction assembly of claim 4, wherein the length of each slot is greater than a diameter of each circular junction hole.

7. The energy-dissipating junction assembly of claim 4, wherein each slot has a width, and the width of each slot is greater than or equal to a diameter of each circular junction hole.

8. The energy-dissipating junction assembly of claim 4, wherein a spacing between the slots is greater than a spacing between the circular junction holes.

9. The energy-dissipating junction assembly of claim 4, wherein the size of each slot is greater than that of each circular junction hole.

10. The energy-dissipating junction assembly of claim 1, wherein the size of each slot is the same.

11. The energy-dissipating junction assembly of claim 1, wherein the slots are arranged regularly.

12. The energy-dissipating junction assembly of claim 1, wherein the length of each slot is greater than or equal to twice of the external diameter of each head portion.

13. The energy-dissipating junction assembly of claim 12, wherein each slot is disposed with a plurality of bolts.

14. The energy-dissipating junction assembly of claim 1, wherein the area of the energy-dissipating section is greater than that of each junction section.

15. A shockproof structure, comprising:

a structure body having a selected energy-dissipating area; and

an energy-dissipating junction assembly, comprising:

a junction plate including two junction sections and an energy-dissipating section, wherein the two junction sections are connected to the selected energy-dissipating area of the structure body; the energy-dissipating section is located between the two junction sections and has a plurality of slots; and each slot has a length; and

a plurality of bolts separately disposed at each slot of the energy-dissipating section for connecting the energy-dissipating section to the selected energy-dissipating area, wherein each bolt has a head portion, and an external diameter of each head portion is smaller than the length of each slot.

16. The shockproof structure of claim 15, wherein the structure body is selected from one of the following: a steel beam, a steel column, a building, a bridge, a bridge column, and a combination of at least two of the foregoing.

17. The shockproof structure of claim 16, wherein the selected energy-dissipating area is a beam-column joint area.

18. The shockproof structure of claim 15, further comprising a plurality of junction bolts, wherein each junction section has a plurality of circular junction holes, and the junction bolts are separately disposed at each circular junction hole for connecting each junction section to the selected energy-dissipating area.

19. The shockproof structure of claim 18, wherein the length of each slot is greater than a diameter of each circular junction hole.

20. The shockproof structure of claim 18, wherein a spacing between the slots is greater than a spacing between the circular junction holes.

21. The shockproof structure of claim 15, wherein the length of each slot is greater than or equal to twice of the external diameter of each head portion.

22. The shockproof structure of claim 21, wherein each slot is disposed with a plurality of bolts.

23. The shockproof structure of claim 15, wherein the area of the energy-dissipating section is greater than that of each junction section.