CN216515761U - Shock insulation structure for existing building strip-shaped foundation - Google Patents
Shock insulation structure for existing building strip-shaped foundation Download PDFInfo
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- CN216515761U CN216515761U CN202123246679.7U CN202123246679U CN216515761U CN 216515761 U CN216515761 U CN 216515761U CN 202123246679 U CN202123246679 U CN 202123246679U CN 216515761 U CN216515761 U CN 216515761U
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Abstract
The utility model relates to the technical field of existing building reinforcement engineering, in particular to a seismic isolation structure for a strip foundation of an existing building. The two side walls of the original strip-shaped foundation of the seismic isolation structure are provided with bar planting steps. The bar planting steps are arranged in a ladder shape along the height direction of the original bar-shaped foundation. Vertical embedded bars are arranged on the embedded bar steps. The bottom of the original strip-shaped foundation is provided with a transverse planting bar. The reinforced foundation is connected with the original strip-shaped foundation through the bar planting step. The top of the original strip-shaped foundation is provided with a first connecting layer. The bottom of the upper pillar is provided with a second connecting layer. And a shock insulation cavity for mounting a shock insulation support is arranged between the first connecting layer and the second connecting layer. The bottom of the vibration isolation support is embedded in the first connecting layer. The top of the seismic isolation support is embedded in the second connecting layer. The seismic isolation structure optimizes and reinforces the strip foundations in the existing building, further constructs a foundation seismic isolation structure for the strip foundations of the existing building, and improves the seismic isolation and seismic resistance of the existing building foundation.
Description
Technical Field
The utility model relates to the technical field of existing building reinforcement engineering, in particular to a seismic isolation structure for a strip foundation of an existing building.
Background
The building seismic isolation structure is generally designed with a seismic isolation layer at the beginning of construction. The shock insulation support in the shock insulation layer absorbs the impact energy of the seismic waves, so that the impact of the seismic waves on the building is reduced, the purpose of reducing the deformation of the building structure is achieved, the impact energy is limited to be further transmitted to the upper structure of the building, and the shock resistance of the whole building structure is improved.
At present, a great number of brick-concrete structure buildings exist in the existing buildings, wherein earthquake fortification is not considered, or the target of earthquake fortification is lower although the earthquake fortification is considered, and the earthquake functionality is not considered in the week. Such buildings are difficult to withstand the impact of seismic waves in strong earthquakes. Particularly for buildings with higher requirements in earthquakes, such as hospitals, museums, schools and schools, and lifeline engineering. In order to ensure safe use and proper building functions of the buildings, earthquake resistance identification and reinforcement are required.
When the existing building is reinforced and isolated, in order to improve the isolation performance of the building, isolation supports are additionally arranged between layers to form an interlayer isolation structure for absorbing vibration energy. However, seismic energy is often transferred up through the foundation of existing buildings. Therefore, there is a need for optimization and reinforcement on a building basis. The strip foundation of the existing building refers to a foundation form that the length of the foundation of the existing building is far larger than the width of the foundation. For example, it is suitable for the strip foundation of a reinforced concrete frame structure or the strip foundation of a reinforced concrete shear wall structure. In order to further improve the shock insulation and shock resistance of the existing structure, the strip-shaped foundation needs to be further optimized and reinforced.
In summary, how to provide a seismic isolation structure in the process of implementing seismic reinforcement on an existing building to optimize and reinforce a strip-shaped foundation in the existing building, so as to construct a foundation seismic isolation structure of the existing building and improve the seismic isolation and seismic resistance of the foundation of the existing building becomes a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to provide a shock insulation structure for optimizing and reinforcing a strip foundation in an existing building in the process of implementing seismic reinforcement on the existing building, so that a foundation shock insulation structure of the existing building is constructed, and the shock insulation and seismic performance of the foundation of the existing building is improved.
In order to achieve the purpose, the utility model adopts the following scheme: the seismic isolation structure for the existing building strip foundation comprises an original strip foundation, an upper support column connected with an upper building structure, a reinforced foundation and a seismic isolation support;
the reinforcing steel bar structure is characterized in that rib planting steps are arranged on the left side wall and the right side wall of the original bar-shaped foundation respectively, the rib planting steps are arranged in a step shape along the height direction of the original bar-shaped foundation, vertical rib planting is arranged on the rib planting steps, transverse rib planting is arranged at the bottom of the original bar-shaped foundation, the reinforcing foundation is connected with the original bar-shaped foundation through the rib planting steps, and the connecting ends of the vertical rib planting and the transverse rib planting are connected with the reinforcing foundation formed by concrete pouring;
a first connecting layer is arranged at the top of the original strip foundation, a second connecting layer is arranged at the bottom of the upper support, and a shock insulation cavity for mounting a shock insulation support is arranged between the first connecting layer and the second connecting layer;
the bottom of the vibration isolation support is embedded in the first connecting layer, and the top of the vibration isolation support is embedded in the second connecting layer.
Preferably, the bar planting steps on the two sides of the original bar-shaped foundation are symmetrically arranged along the center line of the original bar-shaped foundation. So set up, make full use of is located the space of former bar foundation both sides, when having enlarged the bottom sprag area on former bar foundation, has guaranteed the stress balance on original bar foundation, and then has improved the stability of shock insulation structure self.
Preferably, the first connecting layer and the second connecting layer are both secondary concrete pouring structures, a first embedded plate is embedded in the second connecting layer, a second embedded plate is embedded in the first connecting layer, and anchor bars are arranged at the head end of the first embedded plate and the tail end of the second embedded plate. So set up, accomplish the installation of first pre-buried board and second pre-buried board respectively through the secondary concreting on the upper prop of existing building and former bar form basis in advance, reduced the construction degree of difficulty that founds the shock insulation layer on the basis of existing building, secondary concrete placement structure has guaranteed the joint strength between pre-buried board and the existing building.
Preferably, the surface of the bar planting step is provided with a chiseling layer, the chiseling layer is provided with dents, and the dents are arranged in parallel. So set up, the chisel hair layer on the bar planting step is used for improving the joint strength between reinforcement basis and the original strip shape basis, and the indenture of arranging parallel to each other is used for further increasing the area of contact between original strip shape basis and the reinforcement basis, and the concrete of pouring after being convenient for contacts with the lateral wall on original strip shape basis fully, and then is favorable to improving foundation structure's bulk rigidity.
As preferred, the shock insulation support includes roof, bottom plate and shock insulation pad, and the roof passes through the connecting piece and links to each other with first pre-buried board, and the bottom plate passes through the connecting piece and links to each other with the pre-buried board of second, and the head end of shock insulation pad is provided with first shrouding, and the tail end of shock insulation pad is provided with the second shrouding, and first shrouding links to each other with the roof, and the second shrouding links to each other with the bottom plate, has the lead core in the shock insulation pad, and the head end of lead core links to each other with first shrouding, and the tail end of lead core links to each other with the second shrouding. So set up, be convenient for installation constructor installs the shock insulation support in the shock insulation chamber, the lead core in the shock insulation support has improved the damping performance of support, except can bearing existing building structure's gravity and horizontal force, the hysteresis damped plastic deformation that the lead core produced can also further absorb energy to provide horizontal restoring force for the shock insulation pad.
Preferably, the shock insulation pad comprises a steel plate and a rubber pad, the steel plate and the rubber pad are sequentially stacked to form a buffering structure, and through holes for the lead to pass through are formed in the steel plate and the rubber pad. So set up, steel sheet and the range upon range of buffer structure of rubber pad have further promoted the anti shear behavior of shock insulation pad, and then have promoted the ability of the anti transverse load of reinforcing back building, the lead core in the cooperation shock insulation pad, the plastic deformation absorbed energy of the hysteresis damping that the lead core produced to provide the horizontal restoring force for the shock insulation pad.
Preferably, the first embedded plate and the second embedded plate are both provided with threaded holes for screwing the connecting piece, the connecting piece is provided with a threaded section matched with the threaded holes, the threaded section is positioned at the head end of the connecting piece, and the tail end of the threaded section is provided with an extension section. So set up, be favorable to further improving the installation effectiveness, and then improved the whole body efficiency of construction of isolation structure.
Preferably, waist-shaped holes for the connecting pieces to pass through are formed in the top plate and the bottom plate. So set up, kidney type hole is used for adjusting the relative position between shock insulation pad and the existing building foundation when the installation, and then has improved the mounted position precision of isolation bearing.
Compared with the prior art, the seismic isolation structure for the strip foundation of the existing building provided by the utility model has the following substantive characteristics and progresses:
1. according to the seismic isolation structure for the strip foundation of the existing building, the bar-planting steps are arranged on the two side walls of the original strip foundation and are connected with the reinforced foundation through the vertical bar planting, the bottom of the original strip foundation is connected with the reinforced foundation through the transverse bar planting, the supporting area of the original strip foundation on the upper building structure is enlarged, the strip foundation in the existing building is optimized and reinforced, and the seismic isolation and seismic resistance performance of the existing building is improved;
2. this a shock insulation structure for existing building bar foundation has the shock insulation chamber that supplies the installation of shock insulation support between last pillar and the former bar foundation, during the bottom embedding of shock insulation support and the first articulamentum that the bar foundation links to each other, during the top embedding of shock insulation support and the second articulamentum that the last pillar links to each other, establish the basic shock insulation structure of existing building, be favorable to further improving the joint strength of shock insulation support respectively with last pillar and former bar foundation, and then promoted the stability of shock insulation structure.
Drawings
FIG. 1 is a schematic structural diagram of a seismic isolation structure for a strip foundation of an existing building according to an embodiment of the utility model;
fig. 2 is a schematic view showing an internal structure of a seismic isolation structure for an existing building strip foundation of fig. 1.
Reference numerals: the structure comprises a raw strip-shaped foundation 1, a reinforced foundation 2, a vertical embedded bar 3, a first embedded plate 4, a top plate 5, a first sealing plate 6, a shock insulation pad 7, a lead core 8, a second sealing plate 9, a bottom plate 10, a second embedded plate 11, a connecting piece 12, an anchor bar 13, an upper support column 14, a connecting layer 15, a transverse embedded bar 16 and an embedded bar step 17.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings.
A seismic isolation structure for a strip foundation of an existing building, as shown in fig. 1-2, is used for optimizing and reinforcing the strip foundation of the existing building in the process of implementing seismic reinforcement on the existing building. The two side walls of the original strip-shaped foundation 1 are provided with bar planting steps 17. The bar planting step 17 is connected with the reinforced foundation 2 by using the vertical bar planting 3. The bottom of the original strip-shaped foundation 1 is connected with the reinforcing foundation 2 through the transverse embedded bars 16, so that the supporting area of the original strip-shaped foundation 1 on an upper building structure is enlarged, the strip-shaped foundation in the existing building is optimized and reinforced, and the shock insulation and anti-seismic performance of the existing building is improved. In addition, the both ends of isolation bearing all imbed the articulamentum 15 in, link to each other with former strip foundation 1 and last pillar 14 through articulamentum 15 respectively, construct the basic isolation structure of existing building, are favorable to further improving isolation bearing respectively with last pillar 14 and former strip foundation 1's joint strength, and then have promoted isolation structure's stability.
As shown in fig. 2, a seismic isolation structure for a strip foundation of an existing building includes an original strip foundation 1, an upper column 14 connected to an upper building structure, a reinforcing foundation 2, and a seismic isolation support. The left side wall and the right side wall of the original strip foundation 1 are both provided with bar planting steps 17. The bar planting steps 17 are arranged in a ladder shape along the height direction of the original bar-shaped foundation 1. The bar planting step 17 is provided with a vertical bar planting 3. The bottom of the original strip foundation 1 is provided with a transverse planting bar 16. The reinforced foundation 2 is connected with the original strip-shaped foundation 1 through the bar planting step 17. The link of vertical bar planting 3 and the link of horizontal bar planting 16 all link to each other with the reinforcement basis 2 that concrete placement formed. Wherein, vertical bar 3 and horizontal bar 16 can all select for use the bar planting.
The top of the original strip foundation 1 is provided with a first connection layer. The bottom of the upper pillars 14 is provided with a second connection layer. And a shock insulation cavity for mounting a shock insulation support is arranged between the first connecting layer and the second connecting layer. The bottom of the vibration isolation support is embedded in the first connecting layer. The top of the seismic isolation support is embedded in the second connecting layer.
Wherein, first articulamentum and second articulamentum are secondary concrete placement structure. The first embedded plate 4 is embedded in the second connecting layer. And a second embedded plate 11 is embedded in the first connecting layer. And anchor bars 13 are arranged at the head end of the first embedded plate 4 and the tail end of the second embedded plate 11. So set up, accomplish the installation of first pre-buried board 4 and second pre-buried board 11 respectively through secondary concreting on the last pillar 14 of existing building and original strip form basis in advance, reduced the construction degree of difficulty of constructing the shock insulation layer on the basis of existing building, secondary concrete placement structure has guaranteed the joint strength between pre-buried board and the existing building.
As shown in fig. 2, the seismic isolation mount includes a top plate 5, a bottom plate 10, and a seismic isolation pad 7. The top plate 5 is connected with the first embedded plate 4 through a connecting piece 12. The base plate 10 is connected with a second embedded plate 11 through a connecting piece 12. The head end of the shock insulation pad 7 is provided with a first sealing plate 6. The tail end of the shock insulation pad 7 is provided with a second sealing plate 9. A first closure plate 6 is attached to the top plate 5. The second closure plate 9 is attached to the base plate 10. The shock insulation pad 7 is internally provided with a lead core 8. The head end of the lead 8 is connected to the first sealing plate 6. The end of the lead 8 is connected to a second closure plate 9. So set up, be convenient for installation constructor installs the isolation bearing in the isolation chamber, the lead 8 in the isolation bearing has improved the damping performance of support, except can bearing existing building structure's gravity and horizontal force, the hysteresis damped plastic deformation of lead 8 production can also further absorbed energy to provide horizontal restoring force for shock insulation pad 7.
For example, threaded holes for screwing the connecting pieces 12 are formed in the first embedded plate 4 and the second embedded plate 11. As shown in fig. 1, the connector 12 has a threaded section that mates with the threaded bore. The threaded section is located at the head end of the connector 12. The tail end of the thread section is provided with an extension section. So set up, be favorable to further improving the installation effectiveness, and then improved the whole body efficiency of construction of isolation structure.
Waist-shaped holes for the connecting pieces 12 to pass through are arranged on the top plate 5 and the bottom plate 10. So set up, kidney type hole is used for adjusting the relative position between shock insulation pad 7 and the existing building foundation when the installation, and then has improved the mounted position precision of isolation bearing.
As shown in fig. 2, the bar-planting steps 17 on both sides of the original bar-shaped foundation 1 are symmetrically arranged along the center line of the original bar-shaped foundation 1. So set up, make full use of is located the space of former bar foundation 1 both sides, when having enlarged the bottom sprag area of former bar foundation 1, has guaranteed the atress balance of original bar foundation, and then has improved the stability of shock insulation structure self.
The surface of the bar planting step 17 is provided with a scabbling layer. The burr layer has an indentation. The dents are arranged in parallel. So set up, the chisel hair layer on the bar planting step 17 is used for improving the joint strength between reinforcement basis 2 and the former bar form basis 1. The mutually parallel arranged dents are used for further increasing the contact area between the original strip-shaped foundation 1 and the reinforced foundation 2, so that the later poured concrete is in full contact with the side wall of the original strip-shaped foundation 1, and the integral rigidity of the foundation structure is improved.
In order to further improve the seismic isolation performance of the seismic isolation structure, the seismic isolation cushion 7 comprises a steel plate and a rubber cushion. The steel plate and the rubber pad are sequentially stacked to form a buffer structure, and through holes for the lead cores 8 to penetrate are formed in the steel plate and the rubber pad. So set up, steel sheet and the range upon range of buffer structure of rubber pad have further promoted the anti shear property of shock insulation pad 7, and then have promoted the ability of the anti transverse load of reinforcing back building. In cooperation with the lead core 8 in the vibration isolation pad 7, the hysteresis damping plastic deformation generated by the lead core 8 absorbs energy and provides horizontal restoring force for the vibration isolation pad 7.
When the seismic isolation structure for the strip-shaped foundation of the existing building is used, the strip-shaped foundation bearing heavy load can be a reinforced foundation with two widened sides, and the width of the reinforced foundation is further widened on the structure of the reinforced foundation. If the upper building structure is an eccentric load structure, a reinforcing foundation with a single-side widened part can be arranged on one side of the original strip-shaped foundation. Moreover, when the original strip-shaped foundation is limited by the adjacent building foundation, a reinforcing foundation structure with one side widened can be selected.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the utility model.
Claims (8)
1. A shock insulation structure for a strip foundation of an existing building is characterized by comprising an original strip foundation, an upper support column connected with an upper building structure, a reinforced foundation and a shock insulation support;
the reinforcing steel bar structure is characterized in that rib planting steps are arranged on the left side wall and the right side wall of the original bar-shaped foundation respectively, the rib planting steps are arranged in a step shape along the height direction of the original bar-shaped foundation, vertical rib planting is arranged on the rib planting steps, transverse rib planting is arranged at the bottom of the original bar-shaped foundation, the reinforcing foundation is connected with the original bar-shaped foundation through the rib planting steps, and the connecting ends of the vertical rib planting and the transverse rib planting are connected with the reinforcing foundation formed by concrete pouring;
a first connecting layer is arranged at the top of the original strip foundation, a second connecting layer is arranged at the bottom of the upper support, and a shock insulation cavity for mounting a shock insulation support is arranged between the first connecting layer and the second connecting layer;
the bottom of the vibration isolation support is embedded in the first connecting layer, and the top of the vibration isolation support is embedded in the second connecting layer.
2. The seismic isolation structure for the existing building strip foundation as claimed in claim 1, wherein the bar-planting steps on both sides of the original strip foundation are symmetrically arranged along the center line of the original strip foundation.
3. The seismic isolation structure for the existing building strip foundation of claim 1, wherein the first connecting layer and the second connecting layer are both secondary concrete pouring structures, a first embedded plate is embedded in the second connecting layer, a second embedded plate is embedded in the first connecting layer, and anchor bars are arranged at the head end of the first embedded plate and the tail end of the second embedded plate.
4. The seismic isolation structure for the existing building strip foundation as claimed in claim 1 or 2, wherein the surface of the bar-planting step is provided with a chiseling layer, the chiseling layer is provided with dents, and the dents are arranged in parallel with each other.
5. The seismic isolation structure for the existing building bar-shaped foundation according to claim 3, wherein the seismic isolation support comprises a top plate, a bottom plate and a seismic isolation cushion, the top plate is connected with a first embedded plate through a connecting piece, the bottom plate is connected with a second embedded plate through a connecting piece, a first sealing plate is arranged at the head end of the seismic isolation cushion, a second sealing plate is arranged at the tail end of the seismic isolation cushion, the first sealing plate is connected with the top plate, the second sealing plate is connected with the bottom plate, a lead core is arranged in the seismic isolation cushion, the head end of the lead core is connected with the first sealing plate, and the tail end of the lead core is connected with the second sealing plate.
6. The seismic isolation structure for the existing building strip foundation as claimed in claim 5, wherein the seismic isolation cushion comprises a steel plate and a rubber cushion, the steel plate and the rubber cushion are sequentially stacked to form a buffer structure, and through holes for lead cores to pass through are formed in the steel plate and the rubber cushion.
7. The seismic isolation structure for the existing building strip foundation as claimed in claim 5, wherein the first embedded plate and the second embedded plate are provided with threaded holes for screwing the connecting pieces, the connecting pieces are provided with threaded sections matched with the threaded holes, the threaded sections are positioned at the head ends of the connecting pieces, and the tail ends of the threaded sections are provided with extension sections.
8. A seismic isolation structure for a strip foundation of an existing building as claimed in claim 7, wherein waist-shaped holes for connecting pieces to pass through are formed in both the top plate and the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123246679.7U CN216515761U (en) | 2021-12-22 | 2021-12-22 | Shock insulation structure for existing building strip-shaped foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123246679.7U CN216515761U (en) | 2021-12-22 | 2021-12-22 | Shock insulation structure for existing building strip-shaped foundation |
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| Publication Number | Publication Date |
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| CN216515761U true CN216515761U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123246679.7U Active CN216515761U (en) | 2021-12-22 | 2021-12-22 | Shock insulation structure for existing building strip-shaped foundation |
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- 2021-12-22 CN CN202123246679.7U patent/CN216515761U/en active Active
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