CN210239291U - Ductility assembled buckling restrained steel shotcrete - Google Patents
Ductility assembled buckling restrained steel shotcrete Download PDFInfo
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- CN210239291U CN210239291U CN201920527730.5U CN201920527730U CN210239291U CN 210239291 U CN210239291 U CN 210239291U CN 201920527730 U CN201920527730 U CN 201920527730U CN 210239291 U CN210239291 U CN 210239291U
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Abstract
The utility model relates to a ductility assembled buckling restrained brace, including cross core, packing steel sheet and restraint steel sheet, the restraint steel sheet includes integrative inboard steel sheet and the downside steel sheet that sets up, the vertical board of cross core is connected and is wrapped up to inboard steel sheet, the downside steel sheet supports with the upper and lower terminal surface of the horizontal board of cross core and leans on, the downside steel sheet is formed with the extension clearance to the lateral surface extension portion of the horizontal board of cross core within a definite time, be equipped with the packing steel sheet in the extension clearance, the medial surface of packing the steel sheet supports with the lateral surface of the horizontal board of cross core and leans on, the upper and lower terminal surface of packing the steel sheet links together with the extension portion of downside steel sheet. The utility model has the advantages of ductility performance is good, and axial deformability is strong, and anti-seismic performance is good, and construction convenience easily assembles.
Description
Technical Field
The utility model belongs to the technical field of civil engineering structure antidetonation, concretely relates to ductility assembled buckling restrained steel shotcrete.
Background
The existing anti-buckling support is mainly focused on the research on the overall stability and hysteretic energy consumption performance of the anti-buckling support, and the ductility of the anti-buckling support is less involved. The destruction of current buckling restrained brace often takes place at the tip, leads to the biggest deflection of support less, ductility performance on the low side, and the peripheral restraint unit of current buckling restrained brace is the steel pipe that the mortar was filled mostly simultaneously, and the support of this type leads to pouring the quality to be difficult to control and makes the support performance decline because of the construction difficulty, and its dead weight is big, is unfavorable for the assembly construction on-the-spot. In addition, according to the strong earthquake investigation in recent years, strong aftershocks with long duration appear after the strong earthquake, and for the strong aftershocks with long duration, the core unit of the conventional buckling restrained brace may be broken due to insufficient maximum deformation, so that higher requirements are made on the ductility of the buckling restrained brace.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the problem that prior art exists, provide a ductility assembled buckling restrained brace, the axial bearing capacity and the axial rigidity of this support are provided by the core, and reach the effect that the multistage is surrendered through the restraint of restraint steel sheet to the core, and reach the effect of surrendering in succession through the trompil on the core, prevent that the tip of core from destroying, reach the effect that ductility performance is good, anti-seismic performance is good, axial deformability is strong, easily transport assembly and core are changed.
For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
the utility model provides a ductility assembled buckling restrained brace, includes the cross core, fills steel sheet and restraint steel sheet, the restraint steel sheet includes inboard steel sheet and downside steel sheet, the vertical board of cross core is connected and is wrapped up to inboard steel sheet, the upper and lower terminal surface of downside steel sheet and the horizontal board of cross core supports and leans on, the downside steel sheet is formed with the extension clearance to the lateral surface extension portion of the horizontal board of cross core within a definite time, be equipped with the filling steel sheet in the extension clearance, the medial surface of filling the steel sheet supports with the lateral surface of the horizontal board of cross core and leans on, the upper and lower terminal surface of filling the steel sheet links together with the extension portion of downside steel sheet.
Furthermore, a plurality of openings are formed in the vertical plate of the cross-shaped core plate, a plurality of bolt holes corresponding to the openings are formed in the inner side steel plate of the constraint steel plate, and the vertical plate and the inner side steel plate are fixedly connected together through the openings, the bolt holes and the corresponding bolts.
Furthermore, the length of the opening on the vertical plate is gradually reduced from two ends to the center.
Furthermore, the center of the vertical plate is provided with at least one opening, and the center of the inner side steel plate is provided with at least one bolt hole.
Furthermore, a plurality of corresponding matched screw holes are arranged on the extension part of the lower steel plate and the filling steel plate side by side and are fixedly connected together through corresponding high-strength bolts.
Furthermore, the outer side surface of the transverse plate of the cross-shaped core plate is an arc surface, and the arc surface is of a concave structure from two ends of the outer side surface of the transverse plate to the middle so as to ensure that the net section area in the middle of the cross-shaped core plate is the minimum.
Furthermore, one side that the filling steel plate leans on the lateral surface of the transverse plate is an arc surface, and the arc surface is matched with the arc surface of the lateral surface of the transverse plate, so that the filling steel plate is convenient to attach tightly.
Furthermore, the restraint steel plate also comprises an inner space, and stiffening ribs or filled concrete are arranged in the inner space.
Further, the distance between the constraint steel plate and the cross core plate is 1mm-2mm, and the distance between the filling steel plate and the cross core plate is 1mm-2 mm.
Furthermore, the cross core plate, the filling steel plate and the restraining steel plate are all made of steel materials.
The utility model has the advantages that:
1. the utility model discloses an trompil on the cross core and the effect of bolt hole and corresponding bolt on the restraint steel sheet restrict the deflection of the section of surging between the trompil on the cross core, reach the effect that the segmentation surged in succession to the biggest deformability and the ductility performance of support have been strengthened.
2. The utility model discloses a radian of the yield section on the cross core, the deformation of control cross core takes place in the centre of the yield section with surrender, reaches the effect that the fixed point surrendered, has prevented the tip destruction of support, makes the destruction of support concentrate and takes place certain local area.
3. The utility model discloses an all components of ductility assembled buckling restrained steel shotcrete are steel material, easily construction, and the core of support is easily changed after the earthquake takes place.
Drawings
FIG. 1 is a cross core structure diagram of the present invention;
FIG. 2 is a structural view of the steel filler sheet of the present invention;
FIG. 3 is a schematic view of the cross core plate and the filling steel plate according to the present invention;
FIG. 4a is a front view of the restraint steel plate of the present invention;
FIG. 4b is a rear view structural diagram of the restraining steel plate of the present invention;
FIG. 5 is a drawing showing the explosion structure of the restraint steel plate of the present invention;
FIG. 6 is a perspective view of the present invention;
fig. 7 is an axial view of the overall connection structure of the present invention.
The reference numbers in the figures illustrate: 1. cross core board, 11, vertical plate, 12, horizontal plate, 2, filling steel plate, 3, restraint steel plate, 31, inboard steel plate, 32, downside steel plate, 33, inner space, 34, outside steel plate, 35, upside steel plate, 4, high strength bolt, 5, trompil, 6, bolt hole, 7, bolt.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 7, a ductile fabricated buckling restrained brace comprises a cross core plate 1, a filling steel plate 2 and a restraining steel plate 3, wherein the restraining steel plate 3 comprises an inner steel plate 31 and a lower steel plate 32, the inner steel plate 31 is connected with and wraps a vertical plate 11 of the cross core plate 1, in this embodiment, the inner steel plate 31 and the lower steel plate 32 can be arranged into a whole, the inner steel plate 31 is connected with and wraps the vertical plate 11 of the cross core plate 1, or the restraining steel plate 3 is divided into the inner steel plate 31, the lower steel plate 32, the outer steel plate 34 and the upper steel plate 35, and are connected with each other to form a structure like a Chinese character 'chi', a full through groove is opened in the middle of the lower steel plate 32, the vertical plate 11 is inserted into the full through groove to directly abut against the upper steel plate 35, half through grooves are opened at two ends of the middle of the upper steel plate 35, inclined surfaces are arranged at two inner edges of two ends, thereby finally form inboard steel sheet 31 to the parcel structure of vertical plate 11, vertical plate 11 is as the vertical yield section of cross core 1, downside steel sheet 32 supports with the upper and lower terminal surface of the horizontal plate 12 of cross core 1 and leans on, and horizontal plate 12 is as the horizontal yield section of cross core 1, downside steel sheet 32 is formed with the extension clearance to the lateral surface extension part of the horizontal plate 12 of cross core 1 within a definite time, be equipped with in the extension clearance and pack steel sheet 2, the medial surface of packing steel sheet 2 supports with the lateral surface of the horizontal plate 12 of cross core 1 and leans on, the upper and lower terminal surface of packing steel sheet 2 links together with the extension part of downside steel sheet 32.
As shown in fig. 1, 5 and 7, a plurality of openings 5 are formed in the vertical plate 11 of the cross core plate 1, a plurality of bolt holes 6 corresponding to the openings 5 are formed in the inner steel plate 31 of the restraining steel plate 3, and the vertical plate 11 and the inner steel plate 31 are fixedly connected together through the openings 5, the bolt holes 6 and the corresponding bolts 7.
As shown in fig. 1, the length of the opening 5 of the vertical plate 11 decreases from the two ends to the center in order to expand the necking deformation from the middle to the ends in order, and in this embodiment, the width of the opening 5 of the vertical plate 11 is always larger than the diameter of the bolt hole 6 of the inner steel plate 31.
At least one opening 5 is arranged in the center of the vertical plate 11, in this embodiment, the opening 5 is a perfect circle hole, at least one bolt hole 6 is arranged in the center of the inner steel plate 31, in this embodiment, the bolt hole 6 is also a perfect circle hole, and the perfect circle bolt hole 6 and the perfect circle opening 5 are correspondingly matched.
As shown in fig. 6 and 7, the extended portion of the lower steel plate 32 and the filled steel plate 2 are provided with a plurality of correspondingly matched screw holes side by side and are fixedly connected together by corresponding high-strength bolts 4.
As shown in fig. 1, the outer side surface of the transverse plate 12 of the cross core plate 1 is an arc surface, and the arc surface is a structure in which two ends of the outer side surface of the transverse plate 12 are recessed towards the middle, so as to ensure that the net cross-sectional area in the middle of the cross core plate 1 is the minimum.
As shown in fig. 2 and 3, one side of the filler steel plate 2 abutting against the outer side surface of the transverse plate 12 is an arc surface, and the arc surface is matched with the arc surface of the outer side surface of the transverse plate 12 for facilitating abutting.
As shown in fig. 7, the constraining steel plate 3 further includes an inner space 33, in this embodiment, an inner steel plate 31, a lower steel plate 32, an outer steel plate 34 and an upper steel plate 35 are adjacently enclosed to form a tubular structure, the inner space 33 is formed in the tubular structure, a plurality of through holes are provided on the outer steel plate 34, and a stiffening rib or filled concrete is provided in the inner space 33.
The distance between the constraint steel plate 3 and the cross core plate 1 is 1mm-2mm, and the distance between the filling steel plate 2 and the cross core plate 1 is 1mm-2 mm.
The cross core plate 1, the filling steel plate 2 and the restraint steel plate 3 are all made of steel materials.
The principle of the utility model
One, work as the utility model discloses when supporting under the pulling force effect, the net cross sectional area at the positive middle cross-section of cross core 1 is minimum to make the axial deformation of support take place at first in the positive middle of the section of surging, when the pulling force increase, the necking down warp outwards expands in proper order, at last by the bolt hole 6 and the bolt 7 on the inboard steel sheet 31 on the restraint steel sheet 3 and the interact of trompil 5 of cross core, the whole section of surging of make full use of support reaches the effect that the multistage surged in succession, thereby improve and support holistic axial deformability and ductility performance.
Two, work as the utility model discloses when supporting under the pressure effect, the net cross sectional area of the positive middle cross-section of cross core 1 is minimum to make the axial compression of support take place at first in the middle two sections, because the effect and the left and right sides of upper and lower both sides restraint steel sheet 3 fill the restraint of steel sheet 2, and by the bolt hole 6 on the restraint steel sheet 31 and the interact of bolt 7 and the trompil 5 of cross core, the whole section of surrender that makes full use of supported reaches the effect that the multistage was surrendered.
Thirdly, due to the close fit of the bolt hole 6 and the bolt 7 in the middle of the inner steel plate 31 and the opening 5 in the middle of the vertical plate 11 of the cross core plate 1, the cross core plate 1 can be kept from sliding relative to the filling steel plate 2 in the normal use stage, when an earthquake occurs, each yield section on the cross core plate 1 is subjected to plastic deformation under the action of pressure or tension, the bolt hole 6 and the bolt 7 in the middle of the inner steel plate 31 of the restraint steel plate 3 and the opening 5 in the middle of the vertical plate 11 of the cross core plate 1 slide relative to each other, and the inner wall of the opening 5 in the middle of the non-center plays a role in limiting the bolt 7, so that the maximum deformation capacity and ductility of the support are improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The ductile assembled buckling-restrained steel brace is characterized by comprising a cross core plate (1), a filling steel plate (2) and a restraining steel plate (3), the restraint steel plate (3) comprises an inner steel plate (31) and a lower steel plate (32), the inner steel plate (31) is connected with and wraps the vertical plate (11) of the cross core plate (1), the lower steel plate (32) is abutted against the upper end surface and the lower end surface of the transverse plate (12) of the cross core plate (1), an extension gap is formed between the extension parts of the lower steel plate (32) towards the outer side surface of the transverse plate (12) of the cross core plate (1), a filling steel plate (2) is arranged in the extending gap, the inner side surface of the filling steel plate (2) is abutted against the outer side surface of the transverse plate (12) of the cross core plate (1), the upper end surface and the lower end surface of the filling steel plate (2) are connected with the extending part of the lower steel plate (32).
2. The ductile assembled buckling restrained steel brace according to claim 1, wherein a plurality of openings (5) are formed in the vertical plate (11) of the cross core plate (1), a plurality of bolt holes (6) corresponding to the openings (5) are formed in the inner steel plate (31) of the restraining steel plate (3), and the vertical plate (11) and the inner steel plate (31) are fixedly connected together through the openings (5), the bolt holes (6) and the corresponding bolts (7).
3. The ductile assembled buckling restrained steel brace according to claim 2, wherein the length of the opening (5) of the vertical plate (11) is gradually decreased from the two ends to the center.
4. The ductile assembled buckling restrained steel brace according to claim 2 or 3, wherein the vertical plate (11) is provided with at least one opening (5) at the center and the inner steel plate (31) is provided with at least one bolt hole (6) at the center.
5. The ductile fabricated buckling restrained steel brace according to claim 1, wherein the extension portion of the lower steel plate (32) and the filled steel plate (2) are provided with a plurality of correspondingly matched screw holes side by side and are fixedly connected together through corresponding high-strength bolts (4).
6. The ductile assembled buckling restrained steel brace according to claim 1, wherein the outer side surface of the transverse plate (12) of the cross core plate (1) is an arc surface, and the arc surface is a structure that two ends of the outer side surface of the transverse plate (12) are concave towards the middle so as to ensure that the net cross-sectional area in the middle of the cross core plate (1) is minimum.
7. The ductile assembled buckling restrained steel brace according to claim 5, wherein the side of the filler steel plate (2) abutting against the outer side surface of the transverse plate (12) is a cambered surface, and the cambered surface is matched with the cambered surface of the outer side surface of the transverse plate (12) to facilitate the tight fit.
8. The ductile fabricated buckling restrained steel brace as claimed in claim 1, wherein the restraining steel plate (3) further comprises an inner space (33), and the inner space (33) is provided with a stiffening rib or filled with concrete.
9. The ductile fabricated buckling restrained steel brace according to claim 1, wherein the distance between the restraining steel plate (3) and the cross core plate (1) is 1mm-2mm, and the distance between the filler steel plate (2) and the cross core plate (1) is 1mm-2 mm.
10. The ductile assembled buckling restrained steel brace according to claim 1, wherein the cross core plate (1), the filler steel plate (2) and the restraining steel plate (3) are all steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920527730.5U CN210239291U (en) | 2019-04-18 | 2019-04-18 | Ductility assembled buckling restrained steel shotcrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920527730.5U CN210239291U (en) | 2019-04-18 | 2019-04-18 | Ductility assembled buckling restrained steel shotcrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210239291U true CN210239291U (en) | 2020-04-03 |
Family
ID=69968910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920527730.5U Expired - Fee Related CN210239291U (en) | 2019-04-18 | 2019-04-18 | Ductility assembled buckling restrained steel shotcrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210239291U (en) |
-
2019
- 2019-04-18 CN CN201920527730.5U patent/CN210239291U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200403 Termination date: 20210418 |
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| CF01 | Termination of patent right due to non-payment of annual fee |