CN105822023A - Prefabricated shear-resistant connecting part for rammed-earth wall, molding method of prefabricated shear-resistant connecting part and rammed-earth wall - Google Patents
Prefabricated shear-resistant connecting part for rammed-earth wall, molding method of prefabricated shear-resistant connecting part and rammed-earth wall Download PDFInfo
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- CN105822023A CN105822023A CN201610305676.0A CN201610305676A CN105822023A CN 105822023 A CN105822023 A CN 105822023A CN 201610305676 A CN201610305676 A CN 201610305676A CN 105822023 A CN105822023 A CN 105822023A
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- prefabricated
- shear connector
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- prefabricated shear
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a prefabricated shear-resistant connecting part for a rammed-earth wall, a molding method of the prefabricated shear-resistant connecting part and the rammed-earth wall. The prefabricated shear-resistant connecting part is composed of a built-in steel bar framework and wrapping concrete, and the built-in steel bar framework is composed of a vertical framework portion and multiple layers of transverse framework portions; an annular groove is formed in the portion, corresponding to the portion between every two adjacent layers of the transverse framework portions, of the exterior of the wrapping concrete. The molding method of the prefabricated shear-resistant connecting part comprises the steps that 1, the prefabricated built-in steel bar framework is welded; 2, the built-in steel bar framework is put into a formwork and fixed; 3, the formwork is fixed and checked; 4, the concrete is poured; 5, curing is conducted. The rammed-earth wall is composed of multiple layers of vertically-arranged concrete, and multiple prefabricated shear-resistant connecting parts are arranged on each layered portion. The prefabricated shear-resistant connecting part enhances the shear strength among rammed-earth wall layers, improves the wall integrality and solves the wall cracking problem; the rammed-earth wall has the high shear resistance and the good integrality.
Description
Technical field
The invention belongs to construction wall construction applications, particularly to being applicable to the prefabricated shear connector of loam wall, the molding construction method of this shear connector and using the loam wall structure of this shear connector.
Background technology
Rammed earth construction builds one of green building type as energy-saving and environmental protection, extensively it is built in the areas such as the vast Fujian of China, northwest, Xinjiang, due to China as natural disaster than one of more serious country, the phenomenon that the rammed earth body of wall shear-carrying capacity that loam wall system causes due to the reason such as geological process, Lack of support is not enough and ftractures is serious, and the shear-carrying capacity how improving loam wall structure becomes one important directions of rammed earth construction improved performance.
Generally for the shear behavior improving loam wall interlayer, loam wall structure can arrange some prismatic cylindrical horizontal shear connectors in the work progress of rammed earth at horizontal gap, but the adhesion between these prismatic horizontal shear connector and levels rammed earths is less, and effect is the most notable.Meanwhile, traditional building method shearing strength is low, anchorage zone scope is little and the around defect such as rammed earth material gmatjpdumamics difference.
Summary of the invention
The present invention solves technical problem present in known technology and provide a kind of and be applicable to the prefabricated shear connector of loam wall, its molding construction method and loam wall.This prefabricated shear connector can strengthen the shearing strength between loam wall layering, improve wall integrity, the problem reducing wall crazing；Loam wall has higher shear behavior and has preferable globality.
The present invention solves that technical problem is adopted the technical scheme that present in known technology:
A kind of prefabricated shear connector being applicable to loam wall, it is characterized in that: prefabricated shear connector is precast concrete, it is made up of built-in framework of steel reinforcement and external wrapping concrete two parts, described built-in framework of steel reinforcement is welded by vertical skeleton part and multilamellar horizontal skeleton part and constitutes, the horizontal skeleton of multilamellar is from top to bottom arranged by spacing, and vertical skeleton is arranged on the center of the horizontal skeleton of multilamellar；Position between the horizontal skeleton of two-layer corresponding to arbitrary neighborhood of the outside of external wrapping concrete is equipped with annular recess, and annular recess forms the occlusal crib being connected with rammed earth.
Preferred: every layer of horizontal skeleton is constituted by the many reinforcing bars radially arranged centered by vertical skeleton.
Preferred: every layer of horizontal skeleton is all for the bar-mat reinforcement structure being made up of crisscross reinforcing bar.
Preferred: vertical skeleton uses spiral.
Preferred: it is round pie or side's pie that external wrapping concrete corresponds partly to the position of every layer of horizontal skeleton.
The forming method of a kind of prefabricated shear connector being applicable to loam wall, it is characterised in that include following forming step:
S1 welds prefabricated built-in framework of steel reinforcement；
Prefabricated built-in framework of steel reinforcement is put in template by S2, template uses steel form, template is made up of two points, left and right template alignment, the die cavity consistent with the shape after pouring shear connector molding is formed after two points of template alignment, built-in framework of steel reinforcement is placed in the centre of die cavity, bottom spacer is set in the lower section of built-in framework of steel reinforcement, and one layer or the multilamellar sidepiece spacer arranged up and down are set at the periphery of built-in framework of steel reinforcement, built-in framework of steel reinforcement is formed fixing, the wherein consistency of thickness of thickness and the bottom external wrapping concrete after pouring shear connector molding of bottom spacer；
Template is fixed by the bolt that S3 uses punching block supporting, and checks whether the sidepiece spacer being arranged in punching block is firmly fixed built-in framework of steel reinforcement；
S4 above-mentioned steps completes casting concrete in the die cavity of backward punching block, fully to vibrate in casting process, it is to avoid leakage is shaken phenomenon；
After S5 pours, every day sprinkles water maintenance, and maintenance reaches form removal after 28 days, prefabricated shear connector molding.
A kind of loam wall, loam wall is made up of multilamellar rammed earth setting up and down, it is characterized in that: be equipped with multiple above-mentioned prefabricated shear connector arranged by spacing at each layering position of loam wall, in the top half embedment upper strata rammed earth of prefabricated shear connector, in the latter half embedment lower floor rammed earth of prefabricated connector, the annular recess on prefabricated shearing-resistant member is connected with the rammed earth formation of corresponding position.
Preferred: in every layer of rammed earth of loam wall, position near middle part is laid with multiple prefabricated shear connector along the vertical direction.
The present invention has the advantage that with good effect:
This prefabricated shear connector, centre arranges built-in framework of steel reinforcement, bearing capacity can be effectively improved, simultaneously, built-in framework of steel reinforcement is played a protective role by the external wrapping concrete outside built-in framework of steel reinforcement, built-in framework of steel reinforcement and external wrapping concrete act on jointly, ensure that prefabricated shear connector has higher intensity and ductility, the annular recess on prefabricated shear connector surface adds the gmatjpdumamics between itself and rammed earth material, prefabricated shear connector is arranged in the layered position of loam wall, the globality of loam wall structure can be increased substantially, shear-carrying capacity, prevent the aspect performances such as delamination.When there being bigger vertical uniform load q, prefabricated shear connector can connect each layer rammed earth layer, improves the shear-carrying capacity of whole body of wall simultaneously, reaches to prevent the purpose of loam wall structural deterioration.Use the loam wall of this prefabricated shear connector, owing to there being the effect of prefabricated shear connector at layered position, therefore there is higher shear behavior and reached preferable globality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the prefabricated shear connector of the present invention；
Fig. 2 is the A-A profile of Fig. 1；
Fig. 3 is the B-B profile of Fig. 1；
Fig. 4 is the structural representation of loam wall of the present invention.
In figure: 1, built-in framework of steel reinforcement；1-1, vertical skeleton part；1-2, horizontal skeleton part；2, external wrapping concrete；3, annular recess；1 ', loam wall；1-1 ', layering position.
Detailed description of the invention
For the summary of the invention of the present invention, feature and effect can be further appreciated that, hereby enumerate following example, and it be as follows to coordinate accompanying drawing to describe in detail:
A kind of prefabricated shear connector being applicable to loam wall, refers to Fig. 1-4, and prefabricated shear connector is precast concrete, and it is made up of built-in framework of steel reinforcement 1 and external wrapping concrete 2 two parts.Described built-in framework of steel reinforcement is welded by vertical skeleton part 1-1 and multilamellar horizontal skeleton part 1-2 and constitutes, the horizontal skeleton of multilamellar is from top to bottom arranged by spacing, vertical skeleton is arranged on the center of the horizontal skeleton of multilamellar, and the centre of i.e. every layer horizontal skeleton is all formed with vertical skeleton and is connected.Position between the horizontal skeleton of two-layer corresponding to arbitrary neighborhood of the outside of external wrapping concrete is equipped with annular recess 3, annular recess forms the occlusal crib being connected with rammed earth, the shape of above-mentioned annular recess is unrestricted, as long as formed the groove of Guan Bi along one week, annular recess can use common circular ring or side's circulus etc..
In said structure, the preferable the following two kinds of version of every layer of horizontal skeleton:
The first structure: every layer of horizontal skeleton is constituted by the many reinforcing bars radially arranged centered by vertical skeleton, the horizontal framing structure being made up of four reinforcing bars in such as accompanying drawing 2.
The second structure: every layer of horizontal skeleton is all for the bar-mat reinforcement structure being made up of crisscross reinforcing bar.This horizontal framing structure is the most not shown.
In said structure, described vertical skeleton preferably employs spiral.
In said structure, as long as horizontal for correspondence skeleton is all wrapped by the position that external wrapping concrete corresponds partly to every layer of horizontal skeleton, its concrete shape is unrestricted, and in the present invention, external wrapping concrete corresponds partly to the position of every layer of horizontal skeleton and preferably employs round pie or side's pie.
A kind of forming method of the prefabricated shear connector being applicable to loam wall, including following forming step:
S1 welds prefabricated built-in framework of steel reinforcement；
Prefabricated built-in framework of steel reinforcement is put in template by S2, template uses steel form, template is made up of two points, left and right template alignment, the die cavity consistent with the shape after pouring shear connector molding is formed after two points of template alignment, built-in framework of steel reinforcement is placed in the centre of die cavity, bottom spacer is set in the lower section of built-in framework of steel reinforcement, and one layer or the multilamellar sidepiece spacer arranged up and down are set at the periphery of built-in framework of steel reinforcement, built-in framework of steel reinforcement is formed fixing, so, can avoid in follow-up concreting process, built-in framework of steel reinforcement moves and off-center position in the horizontal direction, the wherein consistency of thickness of thickness and the bottom external wrapping concrete after pouring shear connector molding of bottom spacer；
Template is fixed by the bolt that S3 uses punching block supporting, concrete, two points of templates is fixed together, and checks whether the sidepiece spacer being arranged in punching block is firmly fixed built-in framework of steel reinforcement；
S4 above-mentioned steps completes casting concrete in the die cavity of backward punching block, fully to vibrate in casting process, it is to avoid leakage is shaken phenomenon；
After S5 pours, every day sprinkles water maintenance, and maintenance reaches form removal after 28 days, prefabricated shear connector molding.
A kind of loam wall, refer to Fig. 4, loam wall 1 ' is made up of multilamellar rammed earth setting up and down, it is equipped with multiple above-mentioned prefabricated shear connector arranged by spacing at each layering portion 1-1 ' of loam wall, in the top half embedment upper strata rammed earth of prefabricated shear connector, in the latter half embedment lower floor rammed earth of prefabricated connector, the annular recess on prefabricated shearing-resistant member is connected with the rammed earth formation of corresponding position.
In above-mentioned loam wall structure, in every layer of rammed earth of loam wall, position near middle part is laid with multiple prefabricated shear connector further along the vertical direction.
Above-mentioned prefabricated shear connector apply to loam wall structure use following construction process:
1. building ground floor soil layer, when needing, places prefabricated shear connector in centre position；
2. the prefabricated shear connector between ground floor and second layer rammed earth is placed, it is ensured that it is identical that prefabricated shear connector is embedded to length between two-layer；
3. building second layer soil layer, when needing also exist for, places prefabricated shear connector in centre position；
4. above second step and the 3rd step are repeated, until reaching loam wall design height.
Present invention efficiently solves the problem that at loam wall layering, shear resistance is not enough, the features such as construction technology is simple, cheap, practical, this prefabricated shear connector can be widely applied in various rammed earth construction.
Claims (8)
1. the prefabricated shear connector being applicable to loam wall, it is characterized in that: prefabricated shear connector is precast concrete, it is made up of built-in framework of steel reinforcement and external wrapping concrete two parts, described built-in framework of steel reinforcement is welded by vertical skeleton part and multilamellar horizontal skeleton part and constitutes, the horizontal skeleton of multilamellar is from top to bottom arranged by spacing, and vertical skeleton is arranged on the center of the horizontal skeleton of multilamellar；Position between the horizontal skeleton of two-layer corresponding to arbitrary neighborhood of the outside of external wrapping concrete is equipped with annular recess, and annular recess forms the occlusal crib being connected with rammed earth.
The prefabricated shear connector being applicable to loam wall the most according to claim 1, it is characterised in that: every layer of horizontal skeleton is constituted by the many reinforcing bars radially arranged centered by vertical skeleton.
The prefabricated shear connector being applicable to loam wall the most according to claim 1, it is characterised in that: every layer of horizontal skeleton is all for the bar-mat reinforcement structure being made up of crisscross reinforcing bar.
The prefabricated shear connector being applicable to loam wall the most according to claim 1, it is characterised in that: vertical skeleton uses spiral.
The prefabricated shear connector being applicable to loam wall the most according to claim 1, it is characterised in that: it is round pie or side's pie that external wrapping concrete corresponds partly to the position of every layer of horizontal skeleton.
6. the forming method of the prefabricated shear connector being applicable to loam wall, it is characterised in that include following forming step:
S1 welds prefabricated built-in framework of steel reinforcement；
Prefabricated built-in framework of steel reinforcement is put in template by S2, template uses steel form, template is made up of two points, left and right template alignment, the die cavity consistent with the shape after pouring shear connector molding is formed after two points of template alignment, built-in framework of steel reinforcement is placed in the centre of die cavity, bottom spacer is set in the lower section of built-in framework of steel reinforcement, and one layer or the multilamellar sidepiece spacer arranged up and down are set at the periphery of built-in framework of steel reinforcement, built-in framework of steel reinforcement is formed fixing, the wherein consistency of thickness of thickness and the bottom external wrapping concrete after pouring shear connector molding of bottom spacer；
Template is fixed by the bolt that S3 uses punching block supporting, and checks whether the sidepiece spacer being arranged in punching block is firmly fixed built-in framework of steel reinforcement；
S4 above-mentioned steps completes casting concrete in the die cavity of backward punching block, fully to vibrate in casting process, it is to avoid leakage is shaken phenomenon；
After S5 pours, every day sprinkles water maintenance, and maintenance reaches form removal after 28 days, prefabricated shear connector molding.
7. a loam wall, loam wall is made up of multilamellar rammed earth setting up and down, it is characterized in that: be equipped with multiple arbitrary described prefabricated shear connector of claim 1-5 arranged by spacing at each layering position of loam wall, in the top half embedment upper strata rammed earth of prefabricated shear connector, in the latter half embedment lower floor rammed earth of prefabricated connector, the annular recess on prefabricated shearing-resistant member is connected with the rammed earth formation of corresponding position.
Loam wall the most according to claim 7, it is characterised in that: uniform near the position at middle part along the vertical direction in every layer of rammed earth of loam wall bury multiple prefabricated shear connector underground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305676.0A CN105822023B (en) | 2016-05-09 | 2016-05-09 | Suitable for the prefabricated shear connector, its forming method and loam wall of loam wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305676.0A CN105822023B (en) | 2016-05-09 | 2016-05-09 | Suitable for the prefabricated shear connector, its forming method and loam wall of loam wall |
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| Publication Number | Publication Date |
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| CN105822023A true CN105822023A (en) | 2016-08-03 |
| CN105822023B CN105822023B (en) | 2018-04-17 |
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| CN201610305676.0A Expired - Fee Related CN105822023B (en) | 2016-05-09 | 2016-05-09 | Suitable for the prefabricated shear connector, its forming method and loam wall of loam wall |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677384A (en) * | 2016-12-23 | 2017-05-17 | 天津城建大学 | Cross-shaped prefabricated shear connector, forming method thereof and loam wall |
| CN106677381A (en) * | 2017-01-18 | 2017-05-17 | 天津城建大学 | Metal connector for improving integrity of rammed-earth wall structure and rammed-earth wall structure |
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| CN205777103U (en) * | 2016-05-09 | 2016-12-07 | 天津城建大学 | It is applicable to prefabricated shear connector and the loam wall of loam wall |
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2016
- 2016-05-09 CN CN201610305676.0A patent/CN105822023B/en not_active Expired - Fee Related
Patent Citations (8)
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| CA2267218C (en) * | 1996-10-03 | 2002-03-19 | Wasi Tri Pramono | Integrated armor system |
| CN1289017A (en) * | 1999-09-16 | 2001-03-28 | 先进企业株式会社 | Prefabricated hollow concrete structural member |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677384A (en) * | 2016-12-23 | 2017-05-17 | 天津城建大学 | Cross-shaped prefabricated shear connector, forming method thereof and loam wall |
| CN106677381A (en) * | 2017-01-18 | 2017-05-17 | 天津城建大学 | Metal connector for improving integrity of rammed-earth wall structure and rammed-earth wall structure |
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| CN105822023B (en) | 2018-04-17 |
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