CN217840128U - Concrete sleeve is adopted to reinforce bar-shaped foundation after load-bearing wall is unloaded - Google Patents
Concrete sleeve is adopted to reinforce bar-shaped foundation after load-bearing wall is unloaded Download PDFInfo
- Publication number
- CN217840128U CN217840128U CN202221642307.8U CN202221642307U CN217840128U CN 217840128 U CN217840128 U CN 217840128U CN 202221642307 U CN202221642307 U CN 202221642307U CN 217840128 U CN217840128 U CN 217840128U
- Authority
- CN
- China
- Prior art keywords
- foundation
- bearing wall
- concrete
- steel bars
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to an adopt the concrete cover to consolidate bar foundation after the off-load of bearing wall, including plus concrete cover, newly add basic bed course, anchor reinforcing bar, I-steel off-load roof beam, jack, reinforced concrete and connect the limit and step on the platform. The additional concrete sleeves are positioned on two sides of the strip-shaped foundation; longitudinal steel bars, transverse steel bars and stirrups are bound in the externally-added concrete sleeve; the longitudinal steel bars, the main bars of the transverse steel bars and the anchoring steel bars are welded together; the anchoring steel bars are implanted into the bearing wall or the original brick laying strip-shaped foundation; i-steel off-load roof beam both ends support with the jack, shift the load that the bearing wall receives to newly add reinforced concrete and connect the limit to step on the platform, on the retransmission gives newly adding basic bed course, the utility model discloses the most obvious advantage can improve foundation's intensity, rigidity and durability effectively.
Description
Technical Field
The utility model relates to an adopt concrete cover to consolidate bar basis after bearing wall off-load belongs to existing building antidetonation and consolidates technical field.
Background
At present, a large number of existing masonry structure buildings cannot meet the requirement for earthquake resistance, earthquake resistance reinforcement and transformation need to be carried out on the buildings, and particularly, the foundation part is relatively weak. The existing masonry structure earthquake-resistant reinforcement transformation aims at solving the problem of foundation reinforcement firstly, and the load of the whole building is transmitted to the foundation through the foundation, so that the earthquake-resistant reinforcement of the foundation has a great weight in the existing masonry structure earthquake-resistant reinforcement. Only if the foundation has enough strength, rigidity and durability, the safety and normal use of the whole building can be ensured. In order to improve the reinforcing effect, the stress-strain lag between the newly added part and the original foundation is eliminated or reduced, and the load-bearing wall is unloaded and then the concrete sleeve is used for reinforcing the strip foundation. The method is suitable for the existing masonry structure strip foundation when the foundation bearing capacity or the foundation basal area size do not meet the requirements.
SUMMERY OF THE UTILITY MODEL
The utility model provides an adopt the concrete cover to consolidate the bar basis after the off-load of bearing wall, mainly be in order to improve foundation's intensity, rigidity and durability, guarantee the safety and the normal use of whole building.
The technical scheme of the utility model as follows:
adopt the concrete cover to consolidate bar foundation after the off-load of bearing wall, including plus concrete cover, add basic bed course, anchor reinforcing bar, I-steel off-load roof beam, jack, reinforced concrete edge joint step platform, its characterized in that: the additional concrete sleeves are positioned on two sides of the strip-shaped foundation, when the foundation bears eccentric stress, the asymmetric widened strip-shaped foundation is adopted, and when the foundation bears central stress, the symmetric widened strip-shaped foundation is adopted; longitudinal steel bars, transverse steel bars and stirrups are bound in the additional concrete sleeve, and the longitudinal steel bars and the transverse steel bars are arranged in a mutually perpendicular and crossed mode; the main reinforcements of the longitudinal reinforcement and the transverse reinforcement and the anchoring reinforcement are welded together; the anchoring steel bars are embedded into the foundation every 400mm in the height direction from the bottom of the foundation to the bearing wall; the anchoring steel bars are implanted into the steel bar every 400mm along the horizontal direction; the depth of the anchoring steel bar implanted into the bearing wall or the original brick strip-shaped foundation is not less than 180mm; two ends of the I-shaped steel unloading beam penetrating through the bearing wall are supported by a jack and a steel wedge, and the load borne by the bearing wall is transferred to a newly-added reinforced concrete edge-connecting tread platform according to a certain proportion and then transferred to a newly-added foundation cushion layer; the I-steel unloading beam needs to be punched on the bearing wall in advance, and cement mortar is poured into the hole of the bearing wall for filling after the I-steel unloading beam penetrates through the bearing wall; the thickness of the newly added foundation cushion layer is consistent with that of the original foundation cushion layer, and the material of the newly added foundation cushion layer is the same as that of the original foundation cushion layer; the additional concrete sleeve is divided into separate sections every 1500-2000 mm in the horizontal direction, and construction can be carried out in batches, in sections or at intervals.
Further, the strength grade of the concrete of the additional concrete sleeve is not lower than C30.
Furthermore, the diameter of the longitudinal steel bar and the transverse steel bar of the external concrete sleeve is phi 12.
Furthermore, the anchoring steel bar is a steel bar with the diameter of phi 16, and hot rolled steel bars with the grade of HPB300 or HRB335 are adopted.
Furthermore, the stirrup is phi 6, and the distance is 150-200 mm.
Further, the minimum thickness of the additional concrete sleeve is not less than 200mm.
Furthermore, welding rods are adopted for welding between the main bars of the longitudinal steel bars and the transverse steel bars and the anchoring steel bars, and E50 series welding rods are adopted.
Furthermore, the I-steel unloading beams penetrating through the bearing wall are arranged on the bearing wall at intervals of 1500-3000 mm by drilling holes.
Furthermore, the strength grade of the reinforced concrete is not lower than C30, and the reinforced concrete is provided with phi 6 longitudinal steel bars, transverse steel bars and stirrups.
After the load-bearing wall is unloaded, the concrete sleeve is adopted to reinforce the strip-shaped foundation and the construction method thereof adopts the following steps:
the method comprises the following steps: and drilling holes on the bearing wall at intervals of 1500-3000 mm, wherein the sizes of the holes meet the design requirements.
Step two: and (4) roughening and cleaning the bearing wall and the original brick-laid strip-shaped foundation.
Step three: and paving a foundation with the same thickness and material as the original foundation cushion layer on the foundation of the widened part of the original foundation cushion layer, and tamping.
Step four: and (4) performing treatment of adding a new foundation mat layer on the tamped mat layer.
Step five: and pouring reinforced concrete edge-connected tread platforms on the newly added foundation cushion layer.
Step six: after the strength of the reinforced concrete joint tread platform completely meets the requirement, an I-shaped steel unloading beam is installed on the bearing wall, jacks are arranged at two ends of the I-shaped steel unloading beam, a steel wedge is used for wedging, and then the jacks are used for unloading.
Step seven: before binding reinforcing steel bars and pouring concrete outside the original brick strip-shaped foundation, a layer of high-strength-grade cement paste is paved or a concrete interface agent is coated to increase the binding force of the concrete foundation between a new structure and an old structure.
Step eight: and respectively punching holes on the bearing wall and the original brick strip-shaped foundation according to a design drawing, and implanting anchoring reinforcing steel bars.
Step nine: binding the longitudinal steel bars, the transverse steel bars and the stirrups, and welding the main bars of the longitudinal steel bars and the transverse steel bars and the anchoring steel bars together.
Step ten: and (4) before the additional concrete sleeve is poured, carrying out concrete pouring construction after the steel bar arrangement, the anchoring steel bar arrangement, the template support and the like are checked to be qualified.
Has the beneficial effects that:
the utility model discloses the most apparent advantage lies in bearing wall off-load after, adopts the concrete cover to consolidate the bar basis and carries out the seismic strengthening, can improve the intensity, rigidity and the durability on ground basis effectively, and construction cycle is short, safe and reliable. The method is particularly suitable for the seismic reinforcement of the strip foundation of the existing masonry structure when the bearing capacity of the foundation or the base area size of the foundation does not meet the requirement. If the technology is popularized and applied to the seismic strengthening of the old building, the economic benefit and the social benefit are obvious.
Drawings
FIG. 1 is a schematic plan view of a bar foundation reinforced by a concrete sleeve when a load-bearing wall is unloaded;
fig. 2 is a sectional view of fig. 1 through 1.
Fig. 3 is a cross-sectional view 2-2 of fig. 1.
In the figure, 1: adding a concrete sleeve; 2: newly adding a foundation pad layer; 3: an original foundation pad layer; 4: anchoring the reinforcing steel bars; 5: a load-bearing wall; 6: building a strip-shaped foundation by using original bricks; 7: i-shaped steel unloading beams; 8: a jack; 9: reinforced concrete edge-connecting tread platform.
Detailed Description
After the load-bearing wall is unloaded, the concrete sleeve is adopted to reinforce the strip foundation, as shown in figures 1-3, the concrete sleeve comprises an additional concrete sleeve 1, a newly-added foundation cushion layer 2, anchoring steel bars 4, an I-shaped steel unloading beam 7, a jack 8 and a reinforced concrete joint tread platform 9, and is characterized in that: the additional concrete sleeve 1 is positioned on two sides of the strip-shaped foundation, when the foundation bears eccentric compression, the asymmetric widened strip-shaped foundation is adopted, and when the foundation bears central compression, the symmetric widened strip-shaped foundation is adopted; longitudinal steel bars, transverse steel bars and stirrups are bound in the externally-added concrete sleeve 1, and the longitudinal steel bars and the transverse steel bars are arranged in a mutually perpendicular and crossed manner; the longitudinal steel bars, the main bars of the transverse steel bars and the anchoring steel bars 4 are welded together; the anchoring steel bars 4 are embedded into the foundation along the height direction from the bottom of the foundation to the bearing wall 5 every 400 mm; the anchoring steel bars 4 are implanted into the steel bar frame every 400mm along the horizontal direction; the depth of the anchoring steel bar 4 implanted into the bearing wall 5 or the original brick strip-shaped foundation 6 is not less than 180mm; the two ends of the I-shaped steel unloading beam 7 penetrating through the bearing wall 5 are supported by a jack 8 and a steel wedge, and the load borne by the bearing wall 5 is transferred to a newly-added reinforced concrete edge-connecting tread platform 9 according to a certain proportion and then transferred to a newly-added foundation cushion layer 2; the I-shaped steel unloading beam 7 needs to be punched on the bearing wall 5 in advance, and cement mortar is poured into holes of the bearing wall 5 for filling joints after the I-shaped steel unloading beam 7 penetrates through the bearing wall 5; the thickness of the newly added foundation cushion layer 2 is consistent with that of the original foundation cushion layer 3, and the material of the newly added foundation cushion layer 2 is the same as that of the original foundation cushion layer 3; the additional concrete sleeve 1 is divided into separate sections every 1500-2000 mm in the horizontal direction, and can be constructed in batches, in sections or at intervals.
Further, the strength grade of the concrete of the additional concrete sleeve 1 is not lower than C30.
Furthermore, the diameters of the longitudinal steel bars and the transverse steel bars of the additional concrete sleeve 1 are phi 12.
Furthermore, the diameter of the anchoring steel bar 4 is phi 16 steel bar, and hot rolled steel bar of HPB300 or HRB335 grade is adopted.
Furthermore, the stirrup is phi 6, and the distance is 150-200 mm.
Further, the minimum thickness of the additional concrete sleeve 1 is not less than 200mm.
Furthermore, welding rods are adopted for welding between the main bars of the longitudinal steel bars and the transverse steel bars and the anchoring steel bars 4, and E50 series welding rods are adopted.
Further, the I-shaped steel unloading beam 7 penetrating through the bearing wall 5 is provided with I-shaped steel unloading beams 7 in the way that holes are punched on the bearing wall 5 every 1500-3000 mm.
Furthermore, the strength grade of the reinforced concrete connecting tread platform 9 is not lower than C30, and the reinforced concrete connecting tread platform is provided with phi 6 longitudinal steel bars, transverse steel bars and stirrups.
After the load-bearing wall is unloaded, the concrete sleeve is adopted to reinforce the strip foundation and the construction method thereof adopts the following steps:
the method comprises the following steps: and (3) drilling holes on the bearing wall 5 at intervals of 1500-3000 mm, wherein the sizes of the holes meet the design requirements.
Step two: and (3) roughening and cleaning the bearing wall 5 and the original brick laying strip-shaped foundation 6.
Step three: and paving a foundation with the same thickness and material as the original foundation cushion layer 3 for the widened part of the original foundation cushion layer 3, and tamping.
Step four: on the tamped mat, a new base mat 2 is applied.
Step five: and pouring a reinforced concrete edge-connecting tread platform 9 on the newly-added foundation cushion layer 2.
Step six: after the strength of the reinforced concrete joint tread platform 9 completely meets the requirement, an I-shaped steel unloading beam 7 is installed on the bearing wall 5, jacks 8 are arranged at two ends of the I-shaped steel unloading beam 7, the I-shaped steel unloading beam is wedged tightly by using steel wedges, and then the jacks 8 are used for unloading.
Step seven: before binding reinforcing steel bars and pouring concrete outside the original brick laying strip-shaped foundation 6, a layer of high-strength-grade cement paste is paved or a concrete interface agent is coated to increase the binding force of the concrete foundation between a new structure and an old structure.
Step eight: and respectively punching holes on the bearing wall 5 and the original brick strip-shaped foundation 6 according to a design drawing, and implanting anchoring reinforcing steel bars 4.
Step nine: binding the longitudinal steel bars, the transverse steel bars and the stirrups, and welding the main steel bars of the longitudinal steel bars, the transverse steel bars and the anchoring steel bars 4 together.
Step ten: and (3) before the additional concrete sleeve 1 is poured, carrying out concrete pouring construction after the steel bar arrangement, the anchoring steel bar 4 arrangement, the template support and the like are checked to be qualified.
The above is a typical embodiment of the present invention, and the present invention is not limited thereto.
Claims (8)
1. Adopt the concrete sheath to consolidate bar basis after the off-load of bearing wall, its characterized in that: the concrete foundation comprises an additional concrete sleeve (1), a newly-added foundation cushion layer (2), anchoring steel bars (4), I-shaped steel unloading beams (7), jacks (8) and a reinforced concrete joint tread platform (9), wherein the additional concrete sleeve (1) is positioned on two sides of a bar foundation, when the foundation bears eccentric stress, the bar foundation is asymmetrically widened, and when the foundation bears central stress, the bar foundation is symmetrically widened; longitudinal steel bars, transverse steel bars and stirrups are bound in the externally-added concrete sleeve (1), and the longitudinal steel bars and the transverse steel bars are arranged in a mutually perpendicular and crossed manner; the longitudinal steel bars, the main bars of the transverse steel bars and the anchoring steel bars (4) are welded together; the anchoring steel bars (4) are embedded into the bearing wall (5) along the height direction from the bottom of the foundation every 400 mm; the anchoring steel bars (4) are implanted into the steel bar rack every 400mm along the horizontal direction; the depth of the anchoring steel bar (4) implanted into the bearing wall (5) or the original brick strip-shaped foundation (6) is not less than 180mm; two ends of an I-shaped steel unloading beam (7) penetrating through the bearing wall (5) are supported by a jack (8) and a steel wedge, the load borne by the bearing wall (5) is transferred to a newly-added reinforced concrete edge-connecting tread platform (9) according to a certain proportion, and then the load is transferred to a newly-added foundation cushion (2); the I-shaped steel unloading beam (7) needs to be punched on the bearing wall (5) in advance, and cement mortar is poured into the hole of the bearing wall (5) for filling after the I-shaped steel unloading beam (7) penetrates through the bearing wall (5); the thickness of the newly added foundation cushion layer (2) is consistent with that of the original foundation cushion layer (3), and the material of the newly added foundation cushion layer (2) is the same as that of the original foundation cushion layer (3); the additional concrete sleeve (1) is divided into separate sections every 1500-2000 mm in the horizontal direction, and construction can be carried out in batches, sections or intervals.
2. The strip foundation reinforced by the concrete sleeve after being unloaded according to the load-bearing wall of claim 1, which is characterized in that: the concrete strength grade of the additional concrete sleeve (1) is not lower than C30.
3. The load-bearing wall according to claim 1, wherein the concrete sleeve is used for reinforcing the strip foundation after being unloaded, and the concrete sleeve is characterized in that: the diameters of the longitudinal steel bars and the transverse steel bars of the additional concrete sleeve (1) are phi 12.
4. The load-bearing wall according to claim 1, wherein the concrete sleeve is used for reinforcing the strip foundation after being unloaded, and the concrete sleeve is characterized in that: the diameter of the anchoring steel bar (4) is phi 16 steel bar, and hot rolled steel bar of HPB300 or HRB335 grade is adopted.
5. The load-bearing wall according to claim 1, wherein the concrete sleeve is used for reinforcing the strip foundation after being unloaded, and the concrete sleeve is characterized in that: the stirrups adopt phi 6, and the distance between the stirrups is 150 mm-200 mm.
6. The load-bearing wall according to claim 1, wherein the concrete sleeve is used for reinforcing the strip foundation after being unloaded, and the concrete sleeve is characterized in that: the minimum thickness of the additional concrete sleeve (1) is not less than 200mm.
7. The load-bearing wall according to claim 1, wherein the concrete sleeve is used for reinforcing the strip foundation after being unloaded, and the concrete sleeve is characterized in that: the I-shaped steel unloading beams (7) penetrating through the bearing wall (5) are arranged on the bearing wall (5) at intervals of 1500-3000 mm by drilling holes.
8. The load-bearing wall according to claim 1, wherein the concrete sleeve is used for reinforcing the strip foundation after being unloaded, and the concrete sleeve is characterized in that: the strength grade of the concrete of the reinforced concrete edge-connecting tread platform (9) is not lower than C30, and the reinforced concrete edge-connecting tread platform is provided with phi 6 longitudinal steel bars, transverse steel bars and stirrups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221642307.8U CN217840128U (en) | 2022-06-28 | 2022-06-28 | Concrete sleeve is adopted to reinforce bar-shaped foundation after load-bearing wall is unloaded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221642307.8U CN217840128U (en) | 2022-06-28 | 2022-06-28 | Concrete sleeve is adopted to reinforce bar-shaped foundation after load-bearing wall is unloaded |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217840128U true CN217840128U (en) | 2022-11-18 |
Family
ID=84025671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221642307.8U Active CN217840128U (en) | 2022-06-28 | 2022-06-28 | Concrete sleeve is adopted to reinforce bar-shaped foundation after load-bearing wall is unloaded |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217840128U (en) |
-
2022
- 2022-06-28 CN CN202221642307.8U patent/CN217840128U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101831970A (en) | Integrally assembled wallboard wall and construction method thereof | |
| CN106930436B (en) | Reinforced concrete shear wall with built-in prestressed steel diagonal bracing | |
| CN113417300B (en) | Slope support system and construction method thereof | |
| CN110593080A (en) | Inter-support trestle system combined with inner support system and construction method | |
| CN110130534A (en) | A kind of novel energy-consumption precast shear wall and its processing installation method | |
| CN218061703U (en) | Concrete strip foundation reinforced by additional concrete sleeve | |
| CN217840128U (en) | Concrete sleeve is adopted to reinforce bar-shaped foundation after load-bearing wall is unloaded | |
| CN210636443U (en) | Tunnel top foundation pit reinforcing structure | |
| CN210315101U (en) | Prestressed EPS roadbed widening structure | |
| CN110206135B (en) | Stone masonry house foundation reinforcing structure and method | |
| CN111305182A (en) | Soft foundation reinforcement construction method | |
| CN114991555A (en) | Newly-added rib beam type variable cross-section wing plate reinforced independent foundation and construction method thereof | |
| CN114991557A (en) | Concrete strip foundation reinforced by additional concrete sleeve and construction method thereof | |
| CN216840803U (en) | Temporary support structure for replacing shear wall concrete | |
| CN108775086A (en) | The additional assembled integral beam-column node structure and construction method for being closed connection reinforcing bar | |
| CN206337566U (en) | Foundation ditch vertical prestressing anchor pole supporting construction | |
| CN218060474U (en) | Brick bar-shaped foundation reinforced by additional concrete sleeve | |
| CN115162434A (en) | Bar foundation reinforced by concrete sleeve after unloading of bearing wall and construction method thereof | |
| CN105888282B (en) | A kind of seismic reinforcing structure and method that big hole is opened for transformer station's masonry wall | |
| CN211621667U (en) | Tubular pile cushion cap girder steel rail mounted tower machine walking foundation structure | |
| CN113403936A (en) | Bracket-free rapid construction method for hollow pier partition plate of bridge | |
| CN115162433A (en) | Brick-built strip-shaped foundation reinforced by additional concrete sleeve and construction method thereof | |
| CN111173167A (en) | Method and structure for reinforcing shear wall by embedding high-strength self-stress concrete truss | |
| CN107354998B (en) | Foundation-free joint and construction method thereof | |
| CN217812665U (en) | Independent foundation is consolidated to newly-increased rib girder formula isopachous pterygoid lamina |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |