CN105672591A - Existing reinforced concrete plate type stair aseismatic reconstruction structure and construction technology - Google Patents
Existing reinforced concrete plate type stair aseismatic reconstruction structure and construction technology Download PDFInfo
- Publication number
- CN105672591A CN105672591A CN201610224451.2A CN201610224451A CN105672591A CN 105672591 A CN105672591 A CN 105672591A CN 201610224451 A CN201610224451 A CN 201610224451A CN 105672591 A CN105672591 A CN 105672591A
- Authority
- CN
- China
- Prior art keywords
- stair
- waist slab
- reinforcing bar
- concrete
- waist
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 43
- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 49
- 230000002787 reinforcement Effects 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 71
- 238000005461 lubrication Methods 0.000 claims description 23
- 239000000725 suspension Substances 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 230000000384 rearing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 9
- 230000009466 transformation Effects 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The invention discloses an existing reinforced concrete plate type stair aseismatic reconstruction structure and construction technology.The reconstruction structure comprises a stair stringer, a stair plate end, connecting reinforcement, a concrete cantilever slab and a lubricating pad; the stair plate end is the side, separating from the stair stringer after partial concrete is removed, of a stair plate, the connecting reinforcement is embedded to the stair stringer, and one end of the connecting reinforcement is exposed on the end face of the stair stringer and is adjacent to the stair plate end; the stair plate is internally poured with stair plate reinforcement which is exposed on the surface of the stair plate end, the exposed end of the stair plate reinforcement is staggered with the exposed end of the connecting reinforcement in a adjacent mode, the stair plate end is connected with the lubricating pad through multiple fasteners, the lubricating pad is in flexible connection with one end of the concrete cantilever slab, and the other end of the concrete cantilever slab is fixedly connected to the stair stringer; in the concrete cantilever slab, the connecting reinforcement and the stair plate reinforcement serve as reinforcement frameworks.According to the existing reinforced concrete plate type stair aseismatic reconstruction structure and construction technology, stairs can be reconstructed into a structure with sliding support aseismatic construction, and the influence on stair use is small in the reconstruction process.
Description
Technical field
The present invention relates to the realm of building construction, especially the board-like stair antidetonation reconstruction structure of existing reinforced concrete and construction technology.
Background technology
Stair, except having in normal use procedure except vertical transportation function, come interim in the natural disaster such as earthquake, fire, or important, also may be unique passway for escaping. But, in Wenchuan earthquakes in 2008, there is polytype destruction in cast-in-situ reinforced concrete slab formula stair, and in frame building structure, destruction than agent structure is even more serious, cannot play its due function. Major cause is, when conventional reinforced concrete frame structure designs, only stair load is applied to chassis body structure, ignores the interaction of stair and agent structure and influence each other; Stair design separately, only calculate bearing capacity, checking computations amount of deflection and crack, do not consider stair antidetonation and the disadvantageous effect to chassis body structure. But, in earthquake, stair can play similar " K " shape diagonal bracing effect in the frame, and the unitary side increasing skeleton construction to rigidity, shortening structure natural period of vibration, increases earthquake action suffered by structure. This kind of stair " K " shape diagonal bracing effect, also can increase local rigidity, causes the internal force closing on frame column to increase, and the asymmetric arrangement of stair also may make structure produce unexpected torsion. Under reciprocal horizontal earthquake action, the stair in skeleton construction bear axial reciprocating tension and compression, across in and apart from plate end, each 1/3 place's waist slab can bend up and down that downwarp, fracture or crack place concrete are squeezed broken etc. to be destroyed.
At present, for premature degradation in stair earthquake and the disadvantageous effect to chassis body structure, newly-built skeleton construction generally adopts the sliding support anti-seismic construction form invariably unexpected destruction of earthquake centre stair, eliminates stair to the disadvantageous effect of chassis body structure.
But existing skeleton construction stair still adopt the method for affixing steel plate or fibre reinforced plastics (FRP) sheet material to improve its antidetonation ability, prevent waist slab from destroying in advance in earthquake.But while this kind of method increases stair antidetonation ability, also its rigidity can be increased, its " K " shape diagonal brace effect is more obvious than before not reinforcing so that more greatly, practical structures (frame column especially closed on stair) has potentially dangerous for the computation model of primary structure design and practical structures difference.
How the old skeleton construction stair not having sliding support structure are transform as the structure possessing sliding support anti-seismic construction, it is a research direction.
Summary of the invention
The present invention proposes the board-like stair antidetonation reconstruction structure of existing reinforced concrete and construction technology, the old skeleton construction stair not having sliding support structure can be transform as the structure possessing sliding support anti-seismic construction, and stair are used impact less by transformation process simple and easyly.
The present invention is by the following technical solutions.
The board-like stair antidetonation reconstruction structure of existing reinforced concrete and construction technology, described reconstruction structure comprises stair beam, waist slab end, connection reinforcing bar, concrete suspension bridging piece and lubrication pad; Described waist slab end is the waist slab end that waist slab side is separated with stair beam after removing part concrete; Described connection reinforcing bar is planted in stair Liang Chu, and stair beam-ends face is exposed and adjacent with waist slab end in the one end connecting reinforcing bar; Having watered waist slab reinforcing bar in described waist slab, waist slab reinforcing bar exposes waist slab end surface, and the bared end of waist slab reinforcing bar interlocks adjacent with the bared end connecting reinforcing bar; Described waist slab end connects lubrication pad with some fastening pieces, and lubrication pad connects with one end of described concrete suspension bridging piece is soft, and the other end of concrete suspension bridging piece is fixed in stair Liang Chu; To connect reinforcing bar and the waist slab reinforcing bar Framework Of Steel Reinforcement as onsite concrete in concrete suspension bridging piece.
Described lubrication pad is polyfluortetraethylene plate.
It is screw with flat head that described waist slab end connects the fastening piece of lubrication pad, and the spacing of screw with flat head is within 200mm.
Described staggered adjacent waist slab reinforcing bar forms the Framework Of Steel Reinforcement of concrete suspension bridging piece with being connected reinforcing bar.
The construction technology of described reconstruction structure is divided into following step successively.
A1, the construction area delimiting waist slab end.
A2, the unnecessary concrete removing waist slab end, make waist slab be separated with stair beam, and waist slab reinforcing bar exposes and is in close proximity to stair beam end surface.
A3, in lower surface, waist slab end fixing lubrication pad;
A4, being implanted into connection reinforcing bar at stair beam, make one end of connection reinforcing bar expose stair beam-ends face and adjacent with waist slab end, the bared end of waist slab reinforcing bar interlocks adjacent with the bared end connecting reinforcing bar.
A5, set up template, casting concrete at waist slab reinforcing bar with all sides being connected the staggered adjacent area of reinforcing bar, staggered adjacent waist slab reinforcing bar be connected reinforcing bar as Framework Of Steel Reinforcement, formation of concrete cantilevered plate, completes to construct.
In steps A 1, waist slab end being divided into left side and right side, wherein side is first transformed as construction area, another side normal pass.
In steps A 5, when casting concrete, lubricate pad with covered rearing with plastic film and make it to isolate with pouring construction.
Described waist slab end is positioned at the lower end of waist slab.
In the present invention, only construct for the waist slab end of waist slab and stair beam connecting place, do not change stair overall structure, stair are after transformation, in earthquake, stair are consistent with one-piece construction actual loading situation and original design model, without the need to one-piece construction is re-started seismic resistance calculation, save cost.
In the present invention, described waist slab end connects lubrication pad with some fastening pieces, and lubrication pad connects with one end of described concrete suspension bridging piece is soft, and the other end of concrete suspension bridging piece is fixed in stair Liang Chu; This design makes improved waist slab lower surface be separated with agent structure, does not bear reciprocal tension and compression effect in earthquake, can from earthquake damage, for earthquake escape or rescue provide unobstructed passage.
In the present invention; owing to improved waist slab lower surface is separated with agent structure; earthquake is not born reciprocal tension and compression effect; therefore stair can be eliminated to one-piece construction disadvantageous effect; eliminate the unexpected torsion of structure that stair mal-distribution brings; the internal force being adjacent frame column under can not increasing earthquake action, waist slab can be protected, close on frame column, platform plate and ladder beam etc. from earthquake damage, reduce structure potentially dangerous.
In the present invention, when delimiting construction area, waist slab end being divided into left side and right side, wherein side is first transformed as construction area, another side normal pass; This design can allow waist slab still undertake by power with the half of original load bearing structure when constructing, thus ensure that stablizing in waist slab antidetonation transformation process, transformation can also be completed under the prerequisite not interrupting stair use, not easily because transformation engineering, owner's life is brought inconvenience.
In the present invention, inner reinforcing bar is retained when removing the concrete of waist slab end, former waist slab reinforcing bar is there is in the Framework Of Steel Reinforcement of concrete suspension bridging piece, make the load bearing structure of this reconstruction structure can continue to use the load bearing structure of original waist slab, reduce engineering design amount, and be conducive to reducing engineering materials cost.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail:
Accompanying drawing 1 is the schematic diagram of the present invention;
Accompanying drawing 2 is the partial enlargement schematic diagram of waist slab end in the present invention;
Accompanying drawing 3 is the cut-away illustration on the other direction of waist slab end in the present invention;
Accompanying drawing 4 is the schematic diagram at lubrication pad place in the present invention;
In figure: the left side of 1-waist slab end; The right side of 2-waist slab end; 3-waist slab end; 4-stair beam; The concrete that 5-waist slab end need to be removed; 6-waist slab reinforcing bar; Lower surface, 7-waist slab end; 8-fastening piece; 9-lubricates pad; 10-connects reinforcing bar; 11-concrete suspension bridging piece; 12-waist slab reinforcing bar.
Embodiment
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the board-like stair antidetonation reconstruction structure of existing reinforced concrete and construction technology, described reconstruction structure comprises stair beam 4, waist slab end 3, connection reinforcing bar 10, concrete suspension bridging piece 11 and lubrication pad 9; Described waist slab end 3 is the waist slab end that waist slab side is separated with stair beam 4 after removing part concrete; Described connection reinforcing bar 10 is planted in stair Liang4Chu, and stair beam-ends face is exposed and adjacent with waist slab end 3 in the one end connecting reinforcing bar 10; Waist slab reinforcing bar 6 has been watered in described waist slab, waist slab reinforcing bar 6,12 exposes surface, waist slab end 3, the bared end of waist slab reinforcing bar 6,12 interlocks adjacent with the bared end connecting reinforcing bar 10, described waist slab end 3 connects lubrication pad 9 with some fastening pieces 8, lubrication pad 9 connects with one end of described concrete suspension bridging piece 11 is soft, and the other end of concrete suspension bridging piece 11 is fixed in stair Liang4Chu; Concrete suspension bridging piece 11 pours into and connects reinforcing bar 10 and waist slab reinforcing bar 6,12, to connect reinforcing bar 10 and waist slab reinforcing bar 6,12 Framework Of Steel Reinforcement as onsite concrete in concrete suspension bridging piece 11.
Described lubrication pad 9 is polyfluortetraethylene plate.
It is screw with flat head that described waist slab end 3 connects the fastening piece 8 of lubrication pad 9, and the spacing of screw with flat head is within 200mm.
Described staggered adjacent waist slab reinforcing bar 6,12 forms the Framework Of Steel Reinforcement of concrete suspension bridging piece with being connected reinforcing bar 10.
The construction technology of described reconstruction structure is divided into following step successively.
A1, the construction area delimiting waist slab end.
A2, the unnecessary concrete 5 removing waist slab end 3 place, make waist slab be separated with stair beam, and waist slab reinforcing bar 6,12 exposes and is in close proximity to stair beam 4 surface.
A3, in lower surface, waist slab end 37 fixing lubrication pad 9;
A4, being implanted at stair beam 4 and connect reinforcing bar 10, make one end of connection reinforcing bar 10 expose stair beam 4 end face and adjacent with waist slab end 3, the bared end of waist slab reinforcing bar 6,12 interlocks adjacent with the bared end of connection reinforcing bar 10.
A5, interlock all sides of adjacent area of reinforcing bar 10 set up template, casting concrete at waist slab reinforcing bar 6,12 with being connected, staggered adjacent waist slab reinforcing bar 6,12 be connected reinforcing bar 10 as Framework Of Steel Reinforcement, formation of concrete cantilevered plate 11, completes to construct.
In steps A 1, waist slab end 3 being divided into left side 1 and right side 2, wherein side is first transformed as construction area, another side normal pass.
In steps A 5, when casting concrete, lubricate pad with covered rearing with plastic film and make it to isolate with pouring construction.
Described waist slab end is positioned at the lower end of waist slab.
Embodiment:
It is boundary by waist slab taking axis, it is divided into left side 1 and right side 2, selects wherein side first to transform, ensure another side normal pass. Waist slab end 3 is separated bottom described waist slab end 3 in the horizontal direction with stair beam 4, and part removes the concrete 5 of former waist slab end 3, retains reinforcing bar 6,12 bottom former waist slab end 3. Lower surface, sand-cement slurry levelling waist slab end 37 so that it is higher than described stair beam 4 upper surface 5mm. The screw with flat head 8 adopting spacing to be not more than 200mm is fixed the thick polyfluortetraethylene plate of 5mm 9 and is formed lubrication pad 9 in described waist slab end lower surface 7. Connection reinforcing bar 10 is holed and implants in described stair beam 4, jointly form Framework Of Steel Reinforcement with described former waist slab end reinforcing bar 6,12, and set up template casting concrete cantilevered plate 11. When building, described cantilevered plate 11 is isolated with described lubrication pad 9 employing plastics film, after described cantilevered plate 11 reaches regulation concrete strength, adopts same procedure to another side antidetonation transformation.
Claims (8)
1. the board-like stair antidetonation reconstruction structure of existing reinforced concrete and construction technology, it is characterised in that: described reconstruction structure comprises stair beam, waist slab end, connection reinforcing bar, concrete suspension bridging piece and lubrication pad; Described waist slab end is the waist slab end that waist slab side is separated with stair beam after removing part concrete; Described connection reinforcing bar is planted in stair Liang Chu, and stair beam-ends face is exposed and adjacent with waist slab end in the one end connecting reinforcing bar; Waist slab reinforcing bar has been watered in described waist slab, waist slab reinforcing bar exposes waist slab end surface, the bared end of waist slab reinforcing bar interlocks adjacent with the bared end connecting reinforcing bar, described waist slab end connects lubrication pad with some fastening pieces, lubrication pad connects with one end of described concrete suspension bridging piece is soft, and the other end of concrete suspension bridging piece is fixed in stair Liang Chu; To connect reinforcing bar and the waist slab reinforcing bar Framework Of Steel Reinforcement as onsite concrete in concrete suspension bridging piece.
2. the board-like stair antidetonation reconstruction structure of existing reinforced concrete according to claim 1 and construction technology, it is characterised in that: described lubrication pad is polyfluortetraethylene plate.
3. the board-like stair antidetonation reconstruction structure of existing reinforced concrete according to claim 1 and construction technology, it is characterised in that: it is screw with flat head that described waist slab end connects the fastening piece of lubrication pad, and the spacing of screw with flat head is within 200mm.
4. the board-like stair antidetonation reconstruction structure of existing reinforced concrete according to claim 1 and construction technology, it is characterised in that: described staggered adjacent waist slab reinforcing bar forms the Framework Of Steel Reinforcement of concrete suspension bridging piece with being connected reinforcing bar.
5. the board-like stair antidetonation reconstruction structure of existing reinforced concrete according to claim 1 and construction technology, it is characterised in that: the construction technology of described reconstruction structure is divided into following step successively;
A1, the construction area delimiting waist slab end;
A2, the unnecessary concrete removing waist slab end, make waist slab be separated with stair beam, and waist slab reinforcing bar exposes and is in close proximity to stair beam end surface;
A3, in lower surface, waist slab end fixing lubrication pad;
A4, being implanted into connection reinforcing bar at stair beam, make one end of connection reinforcing bar expose stair beam-ends face and adjacent with waist slab end, the bared end of waist slab reinforcing bar interlocks adjacent with the bared end connecting reinforcing bar;
A5, set up template, casting concrete at waist slab reinforcing bar with all sides being connected the staggered adjacent area of reinforcing bar, staggered adjacent waist slab reinforcing bar be connected reinforcing bar as Framework Of Steel Reinforcement, formation of concrete cantilevered plate, completes to construct.
6. the board-like stair antidetonation reconstruction structure of existing reinforced concrete according to claim 5 and construction technology, it is characterized in that: in steps A 1, waist slab end being divided into left side and right side, wherein side is first transformed as construction area, another side normal pass.
7. the board-like stair antidetonation reconstruction structure of existing reinforced concrete according to claim 5 and construction technology, it is characterised in that: in steps A 5, when casting concrete, lubricate pad with covered rearing with plastic film and make it to isolate with pouring construction.
8. the board-like stair antidetonation reconstruction structure of existing reinforced concrete according to claim 1 and construction technology, it is characterised in that: described waist slab end is positioned at the lower end of waist slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224451.2A CN105672591B (en) | 2016-04-12 | 2016-04-12 | Existing reinforced concrete cranked slab stairs antidetonation reconstruction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224451.2A CN105672591B (en) | 2016-04-12 | 2016-04-12 | Existing reinforced concrete cranked slab stairs antidetonation reconstruction structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105672591A true CN105672591A (en) | 2016-06-15 |
| CN105672591B CN105672591B (en) | 2018-01-12 |
Family
ID=56310108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610224451.2A Expired - Fee Related CN105672591B (en) | 2016-04-12 | 2016-04-12 | Existing reinforced concrete cranked slab stairs antidetonation reconstruction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105672591B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277937A (en) * | 2018-03-28 | 2018-07-13 | 中国地震局工程力学研究所 | A kind of reinforced concrete stairs seismic reinforcing structure and its remodeling method |
| CN113404322A (en) * | 2021-06-15 | 2021-09-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for transforming steel ladder into concrete ladder in high-rise concrete structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06220970A (en) * | 1993-01-27 | 1994-08-09 | Takenaka Komuten Co Ltd | Staircase device |
| CN102605909A (en) * | 2012-04-06 | 2012-07-25 | 北京工业大学 | Reinforced concrete platy stair with simple sliding support and construction method |
| CN203008257U (en) * | 2012-10-23 | 2013-06-19 | 新疆七星建设科技股份有限公司 | Sliding support of stair and concrete precast stair |
| CN103758299A (en) * | 2014-02-08 | 2014-04-30 | 江苏中南建筑产业集团有限责任公司 | Anti-seismic stairs with sliding support and construction method thereof |
| CN204456693U (en) * | 2014-12-19 | 2015-07-08 | 中国联合工程公司 | A kind of steel work stringer type stairway slidably hinged-support of deck type step plate |
| CN204753998U (en) * | 2015-04-18 | 2015-11-11 | 山西二建集团有限公司 | Antidetonation concrete stair node structure |
| CN205617686U (en) * | 2016-04-12 | 2016-10-05 | 福州大学 | Structure is reformed transform to existing reinforced concrete formula stair antidetonation |
-
2016
- 2016-04-12 CN CN201610224451.2A patent/CN105672591B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06220970A (en) * | 1993-01-27 | 1994-08-09 | Takenaka Komuten Co Ltd | Staircase device |
| CN102605909A (en) * | 2012-04-06 | 2012-07-25 | 北京工业大学 | Reinforced concrete platy stair with simple sliding support and construction method |
| CN203008257U (en) * | 2012-10-23 | 2013-06-19 | 新疆七星建设科技股份有限公司 | Sliding support of stair and concrete precast stair |
| CN103758299A (en) * | 2014-02-08 | 2014-04-30 | 江苏中南建筑产业集团有限责任公司 | Anti-seismic stairs with sliding support and construction method thereof |
| CN204456693U (en) * | 2014-12-19 | 2015-07-08 | 中国联合工程公司 | A kind of steel work stringer type stairway slidably hinged-support of deck type step plate |
| CN204753998U (en) * | 2015-04-18 | 2015-11-11 | 山西二建集团有限公司 | Antidetonation concrete stair node structure |
| CN205617686U (en) * | 2016-04-12 | 2016-10-05 | 福州大学 | Structure is reformed transform to existing reinforced concrete formula stair antidetonation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277937A (en) * | 2018-03-28 | 2018-07-13 | 中国地震局工程力学研究所 | A kind of reinforced concrete stairs seismic reinforcing structure and its remodeling method |
| CN113404322A (en) * | 2021-06-15 | 2021-09-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for transforming steel ladder into concrete ladder in high-rise concrete structure |
| CN113404322B (en) * | 2021-06-15 | 2023-05-09 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for reforming steel ladder into concrete stair in high-rise concrete structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105672591B (en) | 2018-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206570676U (en) | A kind of queen post Self-resetting power consumption bridge pier of the replaceable steel coupling beam of band | |
| CN106012809B (en) | Restorative procedure after a kind of steel fibrous composite material concrete combination column and its shake | |
| CN104278620B (en) | The ball of Self-resetting can enter formula winged and wave shock insulation pier stud | |
| CN105297617B (en) | Double-column type swinging shock-insulation bridge pier structure system | |
| CN108729344B (en) | A kind of two-columned pier construction waving shock insulation use in conjunction | |
| CN103362210B (en) | Prestress assembly frame structure | |
| CN110359633A (en) | A kind of concrete foot joint of the replaceable energy consumption connection component containing high ductility | |
| CN108660914B (en) | A kind of queen post using TMD glissando waves bridge pier structure | |
| CN206408514U (en) | A kind of queen post Self-resetting power consumption bridge pier of the anti-buckling steel plate wall of band | |
| CN105484152B (en) | A kind of bridge pier of additional mild steel damper and cushion cap attachment structure | |
| CN111501534A (en) | Assembled post-earthquake replaceable combined pier | |
| CN105332521A (en) | Seismic hardening additional damping and reinforcing frame connected with joint region | |
| CN103912072B (en) | A kind of built-in ladder lattice reinforcing bar that intersects fills wall and way | |
| CN108193792A (en) | A kind of novel replaceable waves energy consumption suspension column | |
| CN202390930U (en) | Vibration-absorbing and anti-collapsing support of staircase | |
| CN110835974A (en) | Tough steel column and construction and installation method thereof | |
| CN108978450A (en) | A kind of semi-integral bridge abutment connection structure and its construction method | |
| CN105672591A (en) | Existing reinforced concrete plate type stair aseismatic reconstruction structure and construction technology | |
| CN210622421U (en) | Building shock insulation support | |
| CN104631436A (en) | Method for improving integral type bridge abutment sustaining pile stress performance by H-shaped concrete pile | |
| CN106121144B (en) | A kind of spacing bearing of concrete staircase damping | |
| CN107795012A (en) | Active constraint formula cast in place frame bean column node system based on retarded adhesive prestressed technology | |
| CN102392422A (en) | Reinforcement structure of single-cable-plane cable-stayed bridge | |
| CN205617686U (en) | Structure is reformed transform to existing reinforced concrete formula stair antidetonation | |
| CN111074756A (en) | Damping and energy-consuming assembled type swing pier component and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |