CN210105373U - Replacement, reinforcement and support device for concrete building shear wall - Google Patents
Replacement, reinforcement and support device for concrete building shear wall Download PDFInfo
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- CN210105373U CN210105373U CN201920072807.4U CN201920072807U CN210105373U CN 210105373 U CN210105373 U CN 210105373U CN 201920072807 U CN201920072807 U CN 201920072807U CN 210105373 U CN210105373 U CN 210105373U
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Abstract
The utility model provides a replacement, reinforcement and support device for a concrete building shear wall, which comprises a force bearing steel column, wherein the force bearing steel column is installed on an upper floor and a lower floor of a floor where the concrete shear wall to be replaced is located in a penetrating way, a prefabricated cross beam is installed on a shear wall above the upper floor, and a prefabricated bracket is installed on a shear wall below the lower floor; the upper end of the bearing steel column penetrates through the upper floor and is arranged at the lower bottom of the prefabricated cross beam, and the lower end of the bearing steel column penetrates through the lower floor and is arranged on the prefabricated bracket; and a jacking jack is also arranged between the prefabricated cross beam and the force bearing steel column. The utility model discloses only occupy the construction layer in the use, do not influence the construction and the use on other building layers, save construction period, the shear force wall after the replacement has the same function with the primary structure, and intensity also improves to some extent, does not have the potential safety hazard, can not reduce floor usable floor area simultaneously. The utility model discloses a but all parts repeated dismouting are used, device simple structure and easy to maintain have greatly saved engineering cost.
Description
Technical Field
The utility model belongs to the mechanical equipment field relates to building support reinforcement equipment, concretely relates to strutting arrangement is consolidated in replacement of concrete building shear force wall.
Background
High-rise buildings refer to houses with building height greater than 27 meters and non-single-storey plants, warehouses and other civil buildings with building height greater than 24 meters. A common urban high-rise residential building mostly adopts a shear wall structure, the shear wall is a main bearing structure in the building, and in the building engineering, the condition that the strength of concrete of the existing shear wall structure does not reach the standard or the bearing capacity is insufficient can be met, so that the structure needs to be reinforced. The commonly used reinforcing method includes a section enlarging method, a steel plate pasting reinforcing method, a concrete replacement reinforcing method and the like.
However, the problems of the different prior arts are obvious: the method of increasing the section reduces the use space of the building; although the steel plate sticking reinforcing method is quick in construction, the capacity of joint work of the stuck steel plate and the original wall is poor, and the reinforcing effect is influenced.
Although the concrete replacement reinforcement method can fundamentally solve the problem of the shear wall, the support arrangement of the method has high requirements on the construction technology, and the construction of an upper structure is influenced in the replacement reinforcement construction process, so that the construction period, the construction quality and the engineering cost are influenced.
Disclosure of Invention
Not enough to exist among the prior art, the utility model aims to provide a strutting arrangement is consolidated in replacement of concrete building shear force wall to solve the shear force wall among the prior art and replace that bearing structure is complicated and construction technical requirement is high, and then influences the problem of efficiency of construction and quality.
In order to solve the technical problem, the application adopts the following technical scheme:
a replacement, reinforcement and support device for a concrete building shear wall comprises a force bearing steel column, wherein the force bearing steel column penetrates through an upper floor and a lower floor of a floor where the concrete shear wall to be replaced is located,
a prefabricated cross beam is arranged on the shear wall above the upper floor, and a prefabricated bracket is arranged on the shear wall below the lower floor;
the upper end of the bearing steel column penetrates through the upper floor and is arranged at the lower bottom of the prefabricated cross beam, and the lower end of the bearing steel column penetrates through the lower floor and is arranged on the prefabricated bracket;
and a jacking jack is also arranged between the prefabricated cross beam and the force bearing steel column.
The utility model discloses still have following technical characteristic:
specifically, steel backing plates are arranged among the prefabricated cross beam, the jacking jack, the bearing steel column and the prefabricated bracket.
Specifically, the prefabricated cross beams are respectively arranged on two sides of the shear wall above the upper floor, and the prefabricated cross beams on the two sides of the shear wall above the upper floor are fixedly connected through a plurality of high-strength chemical bolts in a pre-tightening mode.
Specifically, the prefabricated brackets are correspondingly arranged on two sides of the shear wall below the lower floor, and each group of the prefabricated brackets is fixedly connected with a plurality of high-strength chemical bolts in a pre-tightening mode.
Specifically, the bearing steel columns are correspondingly arranged on two sides of the concrete shear wall to be replaced, and the bearing steel columns adjacent to each other on the same side are provided with a plurality of groups of stable inclined struts.
Specifically, the stable inclined struts are at least one group of steel rods which are arranged between the adjacent bearing steel columns in a crossed mode through bolts.
Specifically, all the jacking jacks on the multiple groups of bearing steel columns are connected to the synchronous hydraulic jacking system through hydraulic oil ways.
Specifically, the device further comprises a supporting steel column arranged below the connecting beam of the concrete shear wall to be replaced, a synchronous jack is further arranged between the supporting steel column and the connecting beam on the lower floor, and the synchronous jack is connected to a synchronous hydraulic jacking system through a hydraulic oil way.
Specifically, the device also comprises a plurality of stress sensors which are arranged on the upper floor slab, the lower floor slab, the shear wall above the upper floor slab, the shear wall below the lower floor slab, the connecting beam of the upper floor slab and the connecting beam of the lower floor slab.
Specifically, a sleeper is further arranged between the connecting beam of the lower floor and the synchronous jack.
Compared with the prior art, the utility model, profitable technological effect is:
the utility model (I) only occupies the construction layer in the using process, does not influence the construction and use of other building layers, saves the construction period of the whole building engineering, has the same function as the original structure of the replaced shear wall, improves the strength compared with the original design strength, has no potential safety hazard, and simultaneously can not reduce the use area of the structure;
(II) the utility model discloses an all bearing structure all can be installed repeatedly and use, and the installation all can be dismantled to the part, is convenient for replace vulnerable part, and device simple structure is and easy to maintain, has greatly saved engineering cost.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic left or right view of the structure of FIG. 1;
FIG. 3 is a schematic structural view of the present invention in the case of a shear wall replacement brace having coupling beams;
FIG. 4 is a cross-sectional structural schematic view of the coupling beam and supporting steel columns;
the meaning of the individual reference symbols in the figures is: 1-bearing steel column, 2-to-be-replaced concrete shear wall, 3-upper floor, 4-lower floor, 5-prefabricated beam, 6-prefabricated bracket, 7-jacking jack, 8-steel backing plate, 9-chemical bolt, 10-stable inclined strut, 11-synchronous hydraulic jacking system, 12-coupling beam, 13-supporting steel column, 14-synchronous jack, 15-stress sensor and 16-sleeper.
The following examples are provided to explain the present invention in further detail.
Detailed Description
Obey above-mentioned technical scheme, following the present utility model discloses a specific embodiment, it needs to explain that the utility model discloses do not confine following specific embodiment to, all fall into the protection scope of the utility model to the equivalent transform of doing on the basis of this application technical scheme. The present invention will be described in further detail with reference to examples.
Example 1:
in the embodiment, a concrete building shear wall replacement, reinforcement and support device is provided, as shown in fig. 1 to 2, a force bearing steel column 1 penetrates through an upper floor 3 and a lower floor 4 which are arranged on a floor where a concrete shear wall 2 to be replaced is located,
a prefabricated cross beam 5 is arranged on the shear wall above the upper floor 3, and a prefabricated bracket 6 is arranged on the shear wall below the lower floor 4;
the upper end of a bearing steel column 1 penetrates through an upper floor 3 and is arranged at the lower bottom of a prefabricated beam 5, and the lower end of the bearing steel column 1 penetrates through a lower floor 4 and is arranged on a prefabricated bracket 6;
and a jacking jack 7 is also arranged between the prefabricated beam 5 and the force bearing steel column 1.
As a specific scheme of this embodiment, steel backing plates 8 are installed between the prefabricated beam 5, the jacking jack 7, the force-bearing steel column 1 and the prefabricated bracket 6 of this embodiment.
As a specific scheme of this embodiment, the precast cross beams 5 of this embodiment are respectively installed on two sides of the shear wall above the upper floor 3, and the precast cross beams 5 on two sides of the shear wall above the upper floor 3 are pre-fastened and fixedly connected by a plurality of high-strength chemical bolts 9.
As a specific scheme of this embodiment, multiple groups of prefabricated brackets 6 are correspondingly installed on two sides of the shear wall below the lower floor 4, and each group of prefabricated brackets 6 is pre-fastened and fixedly connected by multiple high-strength chemical bolts 9.
As a specific scheme of this embodiment, in the force-bearing steel columns 1 of this embodiment, a plurality of groups are correspondingly disposed on two sides of the concrete shear wall 2 to be replaced, and a stable inclined strut 10 is installed between adjacent force-bearing steel columns 1 on the same side.
As a specific solution of this embodiment, the stabilizing brace 10 of this embodiment is at least one set of steel rods that are cross-mounted between adjacent force-bearing steel columns 1 through bolts.
As a specific scheme of this embodiment, all the jacking jacks 7 on the multiple groups of force-bearing steel columns 1 of this embodiment are connected to the synchronous hydraulic jacking system 11 through hydraulic oil paths.
As a specific solution of this embodiment, the concrete building shear wall replacement, reinforcement and support device of this embodiment further includes a plurality of stress sensors 15 installed on the floor slab of the upper floor 3, the floor slab of the lower floor 4, the shear wall above the upper floor 3, and the shear wall below the lower floor 4.
Example 2:
this embodiment shows a replacement reinforcing support device for a concrete building shear wall, and the support device at the position of the concrete shear wall 2 to be replaced is the same as that in embodiment 1.
As a specific scheme of this embodiment, the concrete building shear wall replacement reinforcing support device of this embodiment further includes a support steel column 13 installed below the coupling beam 12 of the to-be-replaced concrete shear wall 2 through the chemical bolt 9, a synchronous jack 14 is further installed between the support steel column 13 and the coupling beam 12 of the lower floor 4, and the synchronous jack 14 is connected to the synchronous hydraulic jacking system 11 through a hydraulic oil line.
As a specific solution of this embodiment, the concrete building shear wall replacement, reinforcement and support device of this embodiment further includes a plurality of stress sensors 15 mounted on the coupling beams 12 of the upper floor 3 and the lower floor 4.
As a specific scheme of this embodiment, a sleeper 16 is further installed between the coupling beam 12 and the synchronous jack 14 of the lower floor 4 of this embodiment.
The utility model discloses a strutting arrangement is consolidated in concrete construction shear force wall replacement's use goes on through following step:
the method comprises the following steps: installation the utility model discloses a support device
Punching holes at the bottom of the concrete shear wall of the original upper floor 3, installing prefabricated cross beams 5 with enough length, and fastening and installing the prefabricated cross beams 5 on the two sides through chemical bolts 9; punching holes in the top of the shear wall of the original lower floor 4, installing all prefabricated brackets 6 according to the density required by engineering design, and fastening and installing the corresponding prefabricated brackets 6 on the two sides of the shear wall through chemical bolts 9; the length of the precast beam 5 and the number of precast corbels 6 installed need to be sufficient to cover all the shear wall segments to be replaced. The floor of the upper floor 3 and the floor of the lower floor 4 are punched, the jacking jack 7 and the force bearing steel columns 1 are sequentially installed from top to bottom, a group of stable inclined struts 10 are installed between the adjacent force bearing steel columns 1 in a crossed mode, the stable inclined struts 10 are made of steel rods, and each group of stable inclined struts 10 are fixedly connected with each other and fixedly connected to the adjacent force bearing steel columns 1. All install steel backing plate 8 between prefabricated crossbeam 5, jacking jack 7, load steel post 1 and prefabricated bracket 6, the length of prefabricated crossbeam 5 will be enough to cover all shear wall sections that await replacing, and the density of prefabricated bracket 6, jacking jack 7 and the installation of load steel post 1 needs to be enough to cover all shear wall sections that await replacing and accord with the engineering design demand. All the jacking jacks 7 are connected to a synchronous hydraulic jacking system 11 through oil ways, and a plurality of stress sensors 15 are mounted on the floor slab of the upper floor 3, the floor slab of the lower floor 4, the shear wall above the upper floor 3 and the shear wall below the lower floor 4 according to engineering design and mechanical monitoring requirements. When the shear wall section needing to be replaced comprises connecting beams 12, supporting steel columns 13 with the density meeting the engineering design requirements are installed between the connecting beams 12 of the upper floor 3 and the lower floor 4 through chemical bolts 9, synchronous jacks 14 need to be installed between the supporting steel columns 13 and the connecting beams 12 of the lower floor 4, sleepers 16 need to be installed between the connecting beams 12 of the lower floor 4 and the synchronous jacks 14, and a plurality of stress sensors 15 are installed on the connecting beams 12 of the upper floor 3 and the lower floor 4;
step two: jacking in advance the utility model discloses a device ensures to support firm
After the stress sensor 15 is installed, synchronously jacking all the jacking jacks 7 by using the synchronous hydraulic jacking system 11, when the concrete shear wall 2 to be replaced contains the coupling beam 12, synchronously jacking all the jacking jacks 7 and all the synchronous jacks 14 by using the synchronous hydraulic jacking system 11, firstly, applying partial prestress on the jacking jacks 7 and (or) the synchronous jacks 14 to be 0.4-0.5 times of the designed jacking value, observing the data change of the stress sensor 15, continuously loading the jacking value to the engineering design requirement when the change is stable, strictly monitoring the deformation of beams and floors near the replaced shear wall in the processes of removing and pouring the concrete again, and ensuring the safety and reliability of the replacement engineering;
step three: chiseling out unqualified concrete shear wall section and treating old concrete shear wall section
After the jacking value reaches the engineering design requirement, chiseling the concrete shear wall 2 to be replaced by hydraulic power removing equipment according to the length of chiseling 800-1000 mm every time, cleaning up the surface of the reinforcing steel bar, chiseling 30mm more in the direction of the qualified shear wall section within the limit of obviously qualified and unqualified shear wall sections when chiseling the unqualified concrete shear wall section, and ensuring that the unqualified concrete shear wall section is chiseled completely. And (3) roughening the surface of the old concrete at the section interface of the new and old concrete shear wall to form a serrated raft shape, roughening the vertical interface, wherein the height difference of the rough surface of the new and old concrete is more than 5mm, cleaning up scum, wetting the new concrete by using clear water before pouring, painting the surface by using C30 concrete cement paste, and performing sectional treatment without leaving common cold joints on the interface of the new and old concrete of the shear wall. The method is characterized in that disturbance is possibly caused to the original steel bars in the process of removing unqualified concrete, the original steel bars are straightened, returned, derusted and the like before new concrete is poured, the steel bars with serious damage are replaced by binding and lapping, and the lapping length is larger than 50 d. The reading of the stress sensor 15 and the pressure value of the synchronous hydraulic jacking system 11 are strictly monitored in the process of chiseling out the unqualified concrete shear wall section, so that the effective support of the shear wall is ensured, and the deformation or stress of the building structure is within the engineering design allowable range;
step four: new concrete shear wall section pouring and supporting
Punching holes on the floor slabs of the upper floor 3 and the lower floor 4 as required, supporting a cast-in-place template at the chiseled shear wall section of the concrete shear wall 2 to be replaced, pouring a micro-expansion concrete grouting material with two strength levels higher than the design strength of the original concrete shear wall section into the template, and removing the template after curing according to standard curing conditions until the strength of the micro-expansion concrete grouting material reaches 80% of the engineering design strength. After the concrete of all shear wall sections all reached 100% of engineering design intensity, demolish the utility model discloses a strutting arrangement has accomplished promptly and has waited to replace 2 replacements of concrete shear wall.
Claims (10)
1. A replacement, reinforcement and support device for a concrete building shear wall is characterized by comprising a force bearing steel column (1), wherein the force bearing steel column (1) penetrates through an upper floor (3) and a lower floor (4) of a floor where a concrete shear wall (2) to be replaced is located,
a prefabricated cross beam (5) is installed on the shear wall above the upper floor (3), and a prefabricated bracket (6) is installed on the shear wall below the lower floor (4);
the upper end of the bearing steel column (1) penetrates through the upper floor (3) and is installed at the lower bottom of the prefabricated beam (5), and the lower end of the bearing steel column (1) penetrates through the lower floor (4) and is installed on the prefabricated bracket (6);
and a jacking jack (7) is also arranged between the prefabricated cross beam (5) and the force bearing steel column (1).
2. The concrete building shear wall replacement, reinforcement and support device according to claim 1, wherein steel backing plates (8) are installed among the prefabricated cross beam (5), the jacking jack (7), the bearing steel column (1) and the prefabricated bracket (6).
3. The concrete building shear wall replacement, reinforcement and support device according to claim 1, wherein the prefabricated cross beams (5) are respectively installed on two sides of the shear wall above the upper floor (3), and the prefabricated cross beams (5) on two sides of the shear wall above the upper floor (3) are fixedly fastened through a plurality of high-strength chemical bolts (9) in a pre-tightening mode.
4. The concrete building shear wall replacement, reinforcement and support device according to claim 1, wherein the prefabricated brackets (6) are correspondingly arranged on two sides of the shear wall below the lower floor (4) in multiple groups, and each group of the prefabricated brackets (6) is fixedly fastened through a plurality of high-strength chemical bolts (9).
5. The concrete building shear wall replacement, reinforcement and support device according to claim 1, wherein the force-bearing steel columns (1) are correspondingly arranged in multiple groups on two sides of the concrete shear wall (2) to be replaced, and a stable inclined strut (10) is installed between adjacent force-bearing steel columns (1) on the same side.
6. The concrete building shear wall replacement, reinforcement and support device according to claim 5, wherein the stabilizing diagonal braces (10) are at least one set of steel rods which are installed between the adjacent force bearing steel columns (1) in a crossed manner through bolts.
7. The concrete building shear wall replacement, reinforcement and support device according to claim 5, wherein all the jacking jacks (7) on the multiple groups of force-bearing steel columns (1) are connected to the synchronous hydraulic jacking system (11) through hydraulic oil paths.
8. The concrete building shear wall replacement, reinforcement and support device according to any one of claims 3 or 4, characterized in that the device further comprises a support steel column (13) installed below the connecting beam (12) of the concrete shear wall (2) to be replaced through the chemical bolt (9), a synchronous jack (14) is further installed between the support steel column (13) and the connecting beam (12) of the lower floor (4), and the synchronous jack (14) is connected to the synchronous hydraulic jacking system (11) through a hydraulic oil circuit.
9. The concrete building shear wall replacement, reinforcement and support device according to claim 8, characterized in that the device further comprises a plurality of stress sensors (15) mounted on the floor of the upper floor (3), the floor of the lower floor (4), the shear wall above the upper floor (3), the shear wall below the lower floor (4), the coupling beam (12) of the upper floor (3) and the coupling beam (12) of the lower floor (4).
10. The concrete building shear wall replacement, reinforcement and support device according to claim 8, wherein a sleeper (16) is further installed between the coupling beam (12) of the lower floor (4) and the synchronous jack (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920072807.4U CN210105373U (en) | 2019-01-16 | 2019-01-16 | Replacement, reinforcement and support device for concrete building shear wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920072807.4U CN210105373U (en) | 2019-01-16 | 2019-01-16 | Replacement, reinforcement and support device for concrete building shear wall |
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| Publication Number | Publication Date |
|---|---|
| CN210105373U true CN210105373U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920072807.4U Expired - Fee Related CN210105373U (en) | 2019-01-16 | 2019-01-16 | Replacement, reinforcement and support device for concrete building shear wall |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593720A (en) * | 2020-06-16 | 2021-04-02 | 山东筑峰建筑工程有限公司 | Shear wall replacement support system and application thereof |
| CN114908994A (en) * | 2022-06-02 | 2022-08-16 | 山东大学 | Box girder friction base-steel pipe column integral replacement bracket system and method |
-
2019
- 2019-01-16 CN CN201920072807.4U patent/CN210105373U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593720A (en) * | 2020-06-16 | 2021-04-02 | 山东筑峰建筑工程有限公司 | Shear wall replacement support system and application thereof |
| CN114908994A (en) * | 2022-06-02 | 2022-08-16 | 山东大学 | Box girder friction base-steel pipe column integral replacement bracket system and method |
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Granted publication date: 20200221 Termination date: 20220116 |