CN205259072U - Hollow mound of railway formwork support system that binds - Google Patents
Hollow mound of railway formwork support system that binds Download PDFInfo
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- CN205259072U CN205259072U CN201521077838.7U CN201521077838U CN205259072U CN 205259072 U CN205259072 U CN 205259072U CN 201521077838 U CN201521077838 U CN 201521077838U CN 205259072 U CN205259072 U CN 205259072U
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- hollow pier
- positioning bar
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Abstract
The utility model belongs to a hollow mound of railway construction technical field adopts a large amount of scaffolds and heavy girder steel for overcoming when hollow mound binds the construction, causes the material extravagant, occupies a large amount of manpower equipment, has the problem of potential safety hazard, provides a hollow mound of railway formwork support system that binds. Including the hollow mound body, the pre -buried location muscle of hollow mound body inside of the top of, welded steel fabric piece on the muscle of location, install size and the same bamboo plywood of hollow mound body entrance to a cave size on the reinforcing bar net piece, be equipped with interim support between reinforcing bar net piece and the location muscle. The utility model discloses simple structure, the operation is light, materials are economized, and economical and practical mainly is applied to binding of hollow mound. Optimized the construction method that binds, the use artifical, material resource that has significantly reduced, operation rate of machinery also very improves, is showing to have improved the construction progress, reduces the construction cost of railway, for similar engineering has from now on accumulated the experience, has great reference value.
Description
Technical field
The utility model belongs to Railway Hollow pier technical field of construction, is specifically related to a kind of Railway Hollow pier formwork bracing system that binds.
Background technology
Hollow pier is widely applied in highway, railway engineering, and hollow pier is bound becomes the key that improves hollow pier construction efficiency. The conventional method that solves at present vertical load-bearing in construction has to be set up full hall formula scaffold and pre-buried I-steel and supports the method for setting up steel I-beam and construct. First method needs a large amount of scaffolds, not only causes a large amount of material amount wastes, and constructing operation inconvenience in small space, and after binding, material, because of the too small and inconvenient discharging in Jin Rendong hole, top, takies a large amount of manpowers and vertical transport equipment when construction; Although second method has solved the problem that uses a large amount of scaffolds, but exist heavy girder steel in small space, to be difficult to dismounting and the problem that transports, and breakneck situation while existing operating personnel to carry. So, find that a kind of can to save the light construction method that a large amount of scaffolds also need not heavy girder steel particularly important in hollow pier binds construction.
Summary of the invention
The utility model time adopts a large amount of scaffolds and heavy girder steel in order to overcome the hollow pier construction of binding, and causes waste of material, takies a large amount of manpowers and equipment, has even the problem of potential safety hazard, and a kind of Railway Hollow pier formwork bracing system that binds is provided.
The utility model is realized by following technical scheme: a kind of Railway Hollow pier formwork bracing system that binds, comprises hollow pier body, the pre-buried positioning bar of hollow pier body inside top, welded steel fabric sheet on positioning bar; On reinforced mesh, install the bamboo offset plate that size is identical with hollow pier body hole size; Between described reinforced mesh and positioning bar, be provided with temporary supporting.
Described positioning bar is a circle L-type bar dowel, when positioning bar is embedded in hollow pier body concrete, the pier shaft of hollow pier body is established retainer plate, described reinforced mesh and positioning bar single-sided welding, fusion length is the 10d of welded reinforcement diameter, the reinforced mesh that leaks outside is provided with corrosion resistant coating, and described temporary supporting is that the spacing of reinforcement of three diameters 20 is erected at short position, hole. Described bamboo offset plate and concrete joint synapsis are established sponge strip, and seam adhesive tape is bonding. The positioning bar protruded length of hollow pier body hole midline position is 25d, and the positioning bar protruded length of center line both sides, hollow pier body hole is 15d, and in Transducers Embedded in Concrete, L segment length is 35d; Lower floor's reinforcing bar of described reinforced mesh and the distance of positioning bar are 60mm, and the distance of reinforced mesh top bars and positioning bar is 40mm.
, as linkage section hoisting steel mesh piece good field fabrication is welded to connect with embedded bar to this place at the pre-buried circle L-type bar dowel of pier body inside top, the reinforced mesh of whole welding is as the stress system of bridge pier pallet template. On reinforced mesh, after installation form, reinforcing bar and the concrete of construction pallet, not only need not set up full hall scaffold, also saves and use a large amount of heavy steel I-beams, and operation is simple, convenient carrying, and operational security improves greatly.
The utility model feature is: hollow pier binds and locates the pre-buried L-type bar dowel being connected with reinforced mesh, easy to operate. Template stress system adopts welded steel fabric sheet, can gather materials on the spot or twice laid, and on-the-spot processing and fabricating is convenient. Reinforced mesh, template are installed fast and convenient, have accelerated site operation progress.
The beneficial effects of the utility model are that the utility model is simple in structure, operates light, materials province, economical and practical, is mainly used in binding of hollow pier. Simple reinforced mesh template system is efficiently as the support system of bridge pier top pallet, optimize the construction method that binds, greatly reduce use artificial, material resources, operation rate of machinery also greatly improves, significantly improve construction speed, the construction cost that reduces railway, for some reference has accumulated experience, has compared with restricted publication of international news and commentary entitled and is worth.
Brief description of the drawings
Fig. 1 is the utility model hollow pier body structure schematic diagram; Fig. 2 is the I-I cutaway view of Fig. 1; Fig. 3 is reinforced mesh finished figure; Fig. 4 is positioning bar schematic diagram; Fig. 5 is A structure enlarged drawing in Fig. 3; Fig. 6 be bridge pier bind formwork structure arrange schematic diagram; Fig. 7 is hollow pier top template layout drawing.
In figure: 1-hollow pier body; 2-positioning bar; 3-reinforced mesh; 3.1-lower floor reinforcing bar; 3.2-top bars; 4-bamboo offset plate.
Detailed description of the invention
By reference to the accompanying drawings the specific embodiment of the present invention is described further.
A kind of Railway Hollow pier formwork bracing system that binds, comprises hollow pier body 1, the pre-buried positioning bar 2 of hollow pier body 1 inside top, welded steel fabric sheet 3 on positioning bar 2; On reinforced mesh 3, install the bamboo offset plate 4 that size is identical with hollow pier body hole size; Between described reinforced mesh 3 and positioning bar 2, be provided with temporary supporting.
Described positioning bar 2 is a circle L-type bar dowel, when positioning bar 2 is embedded in hollow pier body concrete, the pier shaft of hollow pier body 1 is established retainer plate, described reinforced mesh 3 and positioning bar 2 single-sided weldings, fusion length is the 10d of welded reinforcement diameter, the reinforced mesh that leaks outside is provided with corrosion resistant coating, and described temporary supporting is that the spacing of reinforcement of three diameters 20 is erected at short position, hole. Described bamboo offset plate 4 is established sponge strip with concrete joint synapsis, and seam crossing adhesive tape is bonding. The positioning bar protruded length of hollow pier body hole midline position is 25d, and the positioning bar protruded length of center line both sides, hollow pier body hole is 15d, and in Transducers Embedded in Concrete, L segment length is 35d; Lower floor's reinforcing bar 3.1 of described reinforced mesh is 60mm with the distance of positioning bar, and reinforced mesh top bars 3.2 is 40mm with the distance of positioning bar.
Construction method is:
1. reinforced mesh design: according to the weight of upper tray armored concrete and concrete speed of perfusion, to the reinforced mesh design of binding. Calculate force analysis and calculate according to armoured concrete slab bottom reinforcement bars, select suitable reinforcing bar through calculating. When calculating, reinforced mesh determines one-way slabs or two-way slab computation model according to the ratio of the long limit of hollow parts shape and minor face. One-way slabs: the ratio of long limit and minor face is more than or equal to 2, and the moment of flexure of long span direction is negligible like this, is similar to and thinks that power only passes to long limit along short across direction, and plate is only supported at long side direction. Mainly a direction bending; Two-way slab: the stressed of two-way slab is the support that in two directions passes to four limits, and spatially two-way slab has better rigidity, mainly in both direction bending.
According to the rank of calculative determination reinforcing bar, spacing, for according to individual event Slab, short reinforcing bar is in bottom, long to reinforcing bar on top, be longly generally distributing reinforcement to reinforcing bar; According to two-way slab rebar model, short reinforcing bar or long all can be on top or bottom to reinforcing bar.
2. stopend calculates: bamboo offset plate is set on reinforced mesh, and size conforms to top, the hole size that binds. Top shutoff hole template is generally the cutting of semicircle+rectangle+semicircle bamboo offset plate and forms. Bamboo offset plate is that moment distribution method calculates according to general concrete end template, and template bearing is reinforced mesh upper reinforcement, the spacing that computation model span is this reinforcing bar.
3. embedded bar is made: two kinds of pre-buried L-type reinforcing bars, and protruded length is respectively 25d and 15d, and in Transducers Embedded in Concrete, L segment length is 35d. First taking hollow pier hole center line as reference position pre-buried center line positioning bar, then pre-buried L-type reinforcing bar is installed to both sides respectively, center line positioning bar protruded length 20d, be followed successively by and expose 15d reinforcing bar, other steel bar arrangement be followed successively by expose 15d, 25d reinforcing bar is alternately arranged, meet splice dispersed placement compressive region joint and be no more than 50% code requirement. Embedded bar corresponding to reinforced mesh lower floor reinforcing bar be apart from top 60mm, and embedded bar corresponding to reinforced mesh top bars is apart from top 40mm. Pre-buried L-type reinforcing bar in the time of pier shaft concrete construction. For preventing pier shaft reinforcing bar level and vertical mobile, one deck retainer plate is set. While noting embedded bar through inner formword, carry out shutoff, mortar leakage prevention.
4. template construct: first according to the bore hole size setting-out of hollow pier pier top, according to the cutting of lofting ruler little progress row bamboo offset plate. By assembled the bamboo offset plate of having reduced shutoff hole, ensure that concrete can not flow down from hole. Size is: be divided into two types of A, B, 2 A types are arc section, and 1 Type B is rectangular section, and thickness is not less than 1cm.
5. reinforced mesh is installed: be first uniformly distributed and be erected at short position, hole with the reinforcing bar of three diameters 20, as the temporary supporting of reinforced mesh. Utilize crane that reinforced mesh is directly winched to hollow pier place, first with tying up silk by reinforced mesh fixing and preliminary calibrating position fast. Reinforced mesh and embedded bar are welded, and first welded steel fabric sheet bottom reinforcement bars, and welding successively from the middle to both ends, adopt single welding, and fusion length is the 10d of welded reinforcement diameter. Extract temporary supporting out; After weld bond is cooling, brush corrosion resistant coating, and mend brush to falling paint part, guarantee the whole preservative treatments of exposed steel bar net sheet.
6. shutoff cavity template is installed: utilize transport vehicle that template is transported to scene, according to template model, 1 block of Type B plate of each pier 2 A templates of configuration. Both sides A type is first installed, then Type B is installed. When formwork, for preventing seam crossing spillage, template limit and concrete joint synapsis are pasted sponge strip, and seam is bonding by adhesive tape. In the time that span is more than or equal to 4m, floor slab formerecting is pressed code requirement arch camber, and springing height is span length 2/1000.
7. superstructure pallet top cap reinforcing bar and concrete construction: after tray portion reinforcing bar and template construction complete, casting concrete, concrete one-time-concreting completes, and in casting process, will check at any time reinforced mesh template system, control speed of perfusion, find that spillage will timely shutoff.
Claims (4)
1. the Railway Hollow pier formwork bracing system that binds, comprises hollow pier body (1), it is characterized in that: the pre-buried positioning bar of hollow pier body (1) inside top (2), the upper welded steel fabric sheet (3) of positioning bar (2); On reinforced mesh (3), install the bamboo offset plate (4) that size is identical with hollow pier body hole size; Between described reinforced mesh (3) and positioning bar (2), be provided with temporary supporting.
2. a kind of Railway Hollow pier according to claim 1 formwork bracing system that binds, it is characterized in that: described positioning bar (2) is a circle L-type bar dowel, when positioning bar (2) is embedded in hollow pier body concrete, the pier shaft of hollow pier body (1) is established retainer plate, described reinforced mesh (3) and positioning bar (2) single-sided welding, fusion length is the 10d of welded reinforcement diameter, the reinforced mesh that leaks outside is provided with corrosion resistant coating, and described temporary supporting (5) is that the spacing of reinforcement of three diameters 20 is erected at short position, hole.
3. a kind of Railway Hollow pier according to claim 1 formwork bracing system that binds, is characterized in that: described bamboo offset plate (4) is established sponge strip with concrete joint synapsis, and seam crossing adhesive tape is bonding.
4. a kind of Railway Hollow pier according to claim 1 formwork bracing system that binds, it is characterized in that: the positioning bar protruded length of hollow pier body hole midline position is 25d, the positioning bar protruded length of center line both sides, hollow pier body hole is 15d, and in Transducers Embedded in Concrete, L segment length is 35d; Lower floor's reinforcing bar (3.1) of described reinforced mesh is 60mm with the distance of positioning bar, and reinforced mesh top bars (3.2) is 40mm with the distance of positioning bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521077838.7U CN205259072U (en) | 2015-12-22 | 2015-12-22 | Hollow mound of railway formwork support system that binds |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521077838.7U CN205259072U (en) | 2015-12-22 | 2015-12-22 | Hollow mound of railway formwork support system that binds |
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| CN205259072U true CN205259072U (en) | 2016-05-25 |
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| CN201521077838.7U Active CN205259072U (en) | 2015-12-22 | 2015-12-22 | Hollow mound of railway formwork support system that binds |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299589A (en) * | 2017-07-11 | 2017-10-27 | 中铁大桥局集团第二工程有限公司 | A kind of precast beam supports the bed die system and its construction method of hollow pier pier cap |
| CN110468730A (en) * | 2019-09-11 | 2019-11-19 | 广东省水利水电第三工程局有限公司 | A kind of hollow pier binds construction technology |
| CN115110437A (en) * | 2022-08-12 | 2022-09-27 | 中国十九冶集团有限公司 | Construction method of bottom template of solid section of hollow thin-wall pier |
-
2015
- 2015-12-22 CN CN201521077838.7U patent/CN205259072U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299589A (en) * | 2017-07-11 | 2017-10-27 | 中铁大桥局集团第二工程有限公司 | A kind of precast beam supports the bed die system and its construction method of hollow pier pier cap |
| CN110468730A (en) * | 2019-09-11 | 2019-11-19 | 广东省水利水电第三工程局有限公司 | A kind of hollow pier binds construction technology |
| CN115110437A (en) * | 2022-08-12 | 2022-09-27 | 中国十九冶集团有限公司 | Construction method of bottom template of solid section of hollow thin-wall pier |
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