CN204571131U - A kind of expanded metal lath reinforced steel concrete staircase structure - Google Patents
A kind of expanded metal lath reinforced steel concrete staircase structure Download PDFInfo
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- CN204571131U CN204571131U CN201520097911.0U CN201520097911U CN204571131U CN 204571131 U CN204571131 U CN 204571131U CN 201520097911 U CN201520097911 U CN 201520097911U CN 204571131 U CN204571131 U CN 204571131U
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- expanded metal
- metal lath
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- concrete
- staircase structure
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Abstract
The utility model discloses a kind of expanded metal lath reinforced steel concrete staircase structure, it belongs to construction work reinforcing technique field.Its also colligation of being tiled by expanded metal lath, at stair soffit, can not only provide good effect of contraction to concrete, can also prevent too early the coming off of concrete, improves the method for stair bearing capacity and ductility.Concrete operating procedure comprises: the cutting of concrete dabbing, fixing pin and brush coating, expanded metal lath, the installation of expanded metal lath, the smearing of High Performance Mortar.Adopt the utility model effectively can improve supporting capacity and the ductility of stair, improve concrete duty.
Description
Technical field
The utility model relates to a kind of concrete staircase ruggedized construction, and especially a kind of expanded metal lath reinforced steel concrete staircase structure, belongs to construction work reinforcing technique field.
Background technology
In reinforced concrete stairs field of reinforcement, more have increasing section reinforcing method, adhesivebonded bar (steel plate) reinforcing method, the anchor of application at present paste steel reinforcing method, the composite material reinforced method of besides adhibit the fiber and gauze wire cloth method etc.But, such as increase strengthened section method, reinforcement by sticking of sheets etc. and all have that difficulty of construction is large, corrosion resistance and poor durability, change structure shape, costly and increase the shortcomings such as deadweight; And fibrous composite also shows obvious fragility under seismic loading, make component damage more unexpected.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of expanded metal lath ruggedized construction improving reinforced concrete stairs bearing capacity and ductility, to improve the working condition of reinforced concrete stairs lower concrete.
For solving the problems of the technologies described above, the technical scheme that the utility model ruggedized construction adopts is as follows: a kind of expanded metal lath reinforced steel concrete staircase structure, its key technology is: it is formed around reinforced concrete stairs bottom surface by expanded metal lath, it comprises expanded metal lath, at the bottom surface place of stair, tiling is arranged described expanded metal lath, and half space bottom surface of tiling along stair stringer direction is until extend to body of wall position, at described stair lower corners place, wide 100mm ~ 200mm expanded metal lath press strip is respectively set, wide 100mm ~ 200mm expanded metal lath press strip is respectively arranged in described half space both sides, the pin through expanded metal lath is implanted at described stair soffit, described expanded metal lath is fixed by tied silk and pin colligation, described expanded metal lath outer setting has screed.
Preferably, described expanded metal lath thickness d is 0.5mm ~ 2mm, size of mesh opening long-pitch
t bfor 12.5mm ~ 50mm, short pitch
t lfor 8mm ~ 18mm.
Preferably, described high performance composite mortar layer thickness is 15mm ~ 30mm.
Preferably, described pin spacing is not more than 200mm.
Preferably, on described expanded metal lath, the colligation spacing of tied silk is identical with pin spacing, is not more than 200mm.
Described screed (6) is high performance composite mortar layer.
The construction method of above-mentioned expanded metal lath reinforced steel concrete stair, its step is as follows:
1) former reinforced concrete stairs is reinforced position dabbing process, dabbing degree of depth 5mm ~ 10mm, with the dust on hair-dryer cleaning surface, guarantee that concrete surface is solid, free from admixture; Implant pin at stair lower concrete, pin adopts inorganic anchoring adhesive anchoring;
2) carbon fiber primer host and curing compound are pressed the proportions of 3:1, brush the concrete surface after dabbing uniformly;
3) after the drying of carbon fiber primer, expanded metal lath is laid in the bottom of former reinforced concrete stairs, strikes and pound expanded metal lath and make it be close to concrete surface, by tied silk, expanded metal lath and pin colligation are fixed;
4) high performance composite mortar is spread upon uniformly the outside of expanded metal lath, and repeatedly pressurizes and smear, ensure bubble-free in high performance composite mortar and with former concrete close contact.
In described step 4), the compound method of high performance composite mortar is; The medium sand that carbon fiber face glue, portland cement and 0.25mm sieve aperture sieve is carried out stirring and form thick paste, the ratio of weight and number of portland cement and medium sand gets 1:2.
The beneficial effect adopting technique scheme to produce is:
1. protected effect is good: the utility model is from confined concrete concept, by being firmly fixed on the expanded metal lath of reinforced concrete stairs bottom side, good effect of contraction can not only be provided to reinforced concrete stairs lower concrete, too early the coming off of concrete can also be prevented, improve bearing capacity and the ductility of stair;
2. construction simple, be easy to install, do not need Large Construction facility: be, by tied silk, expanded metal lath is fixed on stair soffit in work progress, and can cut randomly according to scantling, can be completed by common laborer, there is the features such as simple to operate, convenient and quick construction;
3. there is good decay resistance and endurance quality: because the density of high performance composite mortar is high, effectively resist the various acid of building, the corrosion of salt pair stair, do not need the antirust maintenance that steel bonding method adopts, save fund.
4. on the outward appearance of structure and shape impact little: expanded metal lath high performance composite mortar reinforced steel concrete staircase structure, high performance composite mortar is thinner, generally only has 15 ~ 30mm, does not substantially increase deadweight and physical dimension;
5. good in economic efficiency, low price, the utility model is applied in bottom stair, successful and can not improve construction costs significantly;
6., compared with ordinary steel silk screen, this expanded metal lath has ductility and the toughness of higher tensile strength, better cracking resistance and Geng Gao.Given this, with expanded metal lath composite mortar, reinforced concrete stairs is reinforced, prevent too early the coming off of reinforced concrete stairs lower concrete in seismic process, the bearing capacity of reinforcing steel bar concrete staircase and ductility, improve test specimen energy dissipation capacity.
Accompanying drawing explanation
Fig. 1 is the using state structural representation of the utility model at reinforced concrete stairs;
Fig. 2 is reinforced concrete stairs lower node using state structural representation in Fig. 1;
Fig. 3 is node using state structural representation on reinforced concrete stairs in Fig. 1;
Fig. 4 is the using state structural representation of the utility model at reinforced concrete stairs half space;
Fig. 5 is the schematic diagram of expanded metal lath;
1. former reinforced concrete stairs, 2. expanded metal laths, 3. expanded metal lath press strip, 4. pin, 5. tied silk, 6. high performance composite mortar layer, 7. half space in figure.
Detailed description of the invention
Below by drawings and Examples, technical solutions of the utility model are described in further detail.
See accompanying drawing 1-5, this expanded metal lath reinforced steel concrete staircase structure, it is formed around reinforced concrete stairs bottom surface by expanded metal lath, it comprises expanded metal lath 2, at the bottom surface place of stair 1, tiling is arranged described expanded metal lath 2, and half space 7 bottom surface of tiling along stair stringer direction extends to body of wall position, at described stair 1 lower corners place, wide 100mm ~ 200mm expanded metal lath press strip 3 is respectively set, wide 100mm ~ 200mm expanded metal lath press strip 3 is respectively also arranged in described half space 7 both sides, the pin 4 through expanded metal lath 2 is implanted in described stair 7 bottom surface, described expanded metal lath 2 is fixed by tied silk 5 and pin 4 colligation, described expanded metal lath 2 outer setting has high performance composite mortar layer 6.High performance composite mortar preparation method in high performance composite mortar layer is: carried out by the medium sand that carbon fiber face glue, portland cement and 0.25mm sieve aperture sieve stirring formation thick paste (the such as desirable 1:1 of the ratio of weight and number of carbon fiber face glue, portland cement, the ratio of weight and number of portland cement and medium sand gets 1:2).This high performance composite mortar and carbon fiber face glue adopt commercially available Related product also can.
Described expanded metal lath 2 thickness d is 0.5mm ~ 2mm, size of mesh opening long-pitch
t bfor 12.5mm ~ 50mm, short pitch
t lfor 8mm ~ 18mm.Described high performance composite mortar layer 6 thickness is 15mm ~ 30mm.
The construction sequence of above-mentioned ruggedized construction is as follows:
1. dabbing
Former reinforced concrete stairs 1 is reinforced position dabbing process, dabbing degree of depth 5mm ~ 10mm, with the dust on hair-dryer cleaning surface, guarantee that concrete surface is solid, free from admixture.
2. fixing pin and rinse glue
Implant pin 4 at concrete surface, pin adopts inorganic anchoring adhesive anchoring; Subsequently carbon fiber primer host and curing compound are pressed the proportions of 3:1, brush the concrete surface after dabbing uniformly.Carbon fiber primer is divided into A, B two type, and wherein A is host, and B is curing compound, is paired during purchase.
3. the cutting of expanded metal lath
According to the length of the overall length determination expanded metal lath 2 of stair, stair stringer, half space.
4. the installation of expanded metal lath
Expanded metal lath 2 is bent into stair soffit shape and is laid in its bottom surface, strike and pound expanded metal lath 2 and make it be close to concrete surface, arrange expanded metal lath press strip 3 in bending place, expanded metal lath 2 and pin 4 colligation are fixed by tied silk 5, colligation spacing is less than 200mm.
5. outside, smear high performance composite mortar
The medium sand that carbon fiber face glue, Portland cement and 0.25mm sieve aperture sieve is carried out stirring and form thick paste, the ratio of cement and sand gets 1:2, forms high performance composite mortar after uniform stirring; The high performance composite mortar made is spread upon uniformly the outside of expanded metal lath, thickness is 15 ~ 30mm, and repeatedly pressurizes and smear, ensure bubble-free in high performance composite mortar and with former concrete close contact.Carbon fiber face glue adopts commercially available prod.
The utility model by expanded metal lath tiling and colligation at stair soffit, good effect of contraction can not only be provided to concrete, too early the coming off of concrete can also be prevented, improve the method for stair bearing capacity and ductility.
The above, be only wherein a kind of embodiment of the present utility model, also pin can be welded with expanded metal lath.Every above embodiment is made according to the utility model technical spirit any amendment, change or equivalent structure change, the protection domain of technical solutions of the utility model all should be belonged to.
Claims (6)
1. an expanded metal lath reinforced steel concrete staircase structure, it is characterized in that: it is formed around reinforced concrete stairs bottom surface by expanded metal lath, it comprises expanded metal lath (2), at the bottom surface place of stair (1), tiling is arranged described expanded metal lath (2), and half space (7) bottom surface of tiling along stair stringer direction is until extend to body of wall position, at described stair (1) lower corners place, wide 100mm ~ 200mm expanded metal lath press strip (3) is respectively set, wide 100mm ~ 200mm expanded metal lath press strip (3) is respectively arranged in described half space (7) both sides, the pin (4) through expanded metal lath (2) is implanted in described stair (7) bottom surface, described expanded metal lath (2) is fixed by tied silk (5) and pin (4) colligation, described expanded metal lath (2) outer setting has screed (6).
2. require described expanded metal lath reinforced steel concrete staircase structure according to right 1, it is characterized in that: described expanded metal lath (2) thickness d is 0.5mm ~ 2mm, size of mesh opening long-pitch
t bfor 12.5mm ~ 50mm, short pitch
t lfor 8mm ~ 18mm.
3. require described expanded metal lath reinforced steel concrete staircase structure according to right 1, it is characterized in that: described high performance composite mortar layer (6) thickness is 15mm ~ 30mm.
4. require described expanded metal lath reinforced steel concrete staircase structure according to right 1, it is characterized in that: described pin spacing is not more than 200mm.
5. require described expanded metal lath reinforced steel concrete staircase structure according to right 1, it is characterized in that: the colligation spacing of the upper tied silk (5) of described expanded metal lath (2) is identical with pin spacing, is not more than 200mm.
6. require described expanded metal lath reinforced steel concrete staircase structure according to right 1, it is characterized in that: described screed (6) is high performance composite mortar layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520097911.0U CN204571131U (en) | 2015-02-11 | 2015-02-11 | A kind of expanded metal lath reinforced steel concrete staircase structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520097911.0U CN204571131U (en) | 2015-02-11 | 2015-02-11 | A kind of expanded metal lath reinforced steel concrete staircase structure |
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| CN204571131U true CN204571131U (en) | 2015-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594577A (en) * | 2015-02-11 | 2015-05-06 | 石家庄经济学院 | Steel plate net reinforced reinforcement concrete stair structure and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594577A (en) * | 2015-02-11 | 2015-05-06 | 石家庄经济学院 | Steel plate net reinforced reinforcement concrete stair structure and construction method |
| CN104594577B (en) * | 2015-02-11 | 2018-06-26 | 石家庄经济学院 | A kind of expanded metal lath reinforced steel concrete staircase structure and construction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20190211 |