CN211074037U - Box girder template - Google Patents
Box girder template Download PDFInfo
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- CN211074037U CN211074037U CN201920820141.6U CN201920820141U CN211074037U CN 211074037 U CN211074037 U CN 211074037U CN 201920820141 U CN201920820141 U CN 201920820141U CN 211074037 U CN211074037 U CN 211074037U
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- box girder
- girder template
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- 238000010276 construction Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000011374 ultra-high-performance concrete Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a case beam form board, including external mold (1), centre form (2), self-supporting system (3), centre form (2) set up in inside external mold (1), self-supporting system (3) support external mold (1), external mold (1) includes two side forms and a die block, two the side form sets up respectively in the die block both sides, is the opening form that makes progress, two the side form with the die block is integral connection. A case roof beam template be applicable to the precast engineering of same series of different span case roof beams, save the template quantity, realize millimeter level intellectuality camber adjustment in advance.
Description
Technical Field
The utility model relates to a bridge construction field, concretely relates to case roof beam template.
Background
The prefabricated box girder template has the advantages of high precision, simple structure, free integral scaling, easy demoulding and simple operation, can be integrally hoisted or dragged to the girder-making platform, and has the advantages of high precision, simple structure, free integral scaling, easy demoulding and simple operation, and can be integrally hoisted or dragged to the girder-making platform.
The existing prefabricated box girder template is generally divided into four parts, namely a bottom die, a side die, an inner die and an end die. The side mold support adopts a hydraulic support, the inner mold can be installed and demolded by a hydraulic rod, the bottom mold is laid on the longitudinal beam, and the longitudinal beam is arranged on the surface of a design pedestal with enough rigidity.
In the prior art, the adjustable template is mainly used for adjusting the size of the cross section of the box girder, and the longitudinal adjustment of the box girder template is less involved. Meanwhile, in the traditional method, the box girder side mold is connected with the bottom mold through bolts and screws, so that the precision is low, and the arrangement is greatly influenced by the terrain.
The patent CN201811239948 discloses a railway ultrahigh-performance concrete box girder template and a construction method, wherein the template is longitudinally divided into a multi-section girder section template, the girder section template comprises an outer mold, an inner mold is arranged in the outer mold, and two longitudinal ends of the girder section template are end molds; the external mold and the end mold are in an integral form and are erected on the beam-making pedestal; the centre form is for assembling the form, and is fixed with the end mould through shaped steel and bolt, including interior top mould, flat mould and both sides mould down, passes through interior angle mould transition between interior top mould and the both sides mould and between flat mould and the both sides mould down.
The outer mold and the end mold are integral. But the problem that the fluidity of the ultra-high performance concrete material is low and the workability is poor is mainly solved by not longitudinally adjusting the box girder template, and the problem that the ultra-high performance concrete has large shrinkage and cracks are generated when the ultra-high performance concrete is applied to a large-volume closed box section is solved.
The box girder template which is needed at present has the characteristics of strong product integrity, high usability, high standardization degree, easy realization of different span construction and reduction of limitation of a prefabricated site.
Disclosure of Invention
The utility model discloses a solve among the prior art case roof beam side form and pass through the bolt and the screw rod is associative with the die block, its precision is less, settle and receive the topography influence great, the precast engineering construction of different span case roof beams is loaded down with trivial details, the problem that the template quantity is big provides a case roof beam template, and its product wholeness is strong, and the ease for use is high, and standardization level is high, easily realizes different span constructions, reduces prefabricated place restriction, has solved above-mentioned problem.
The utility model provides a new case roof beam template, including external mold, centre form, the self-supporting system, the centre form sets up inside the external mold, and the self-supporting system supports the external mold, and the external mold includes two side forms and a die block, and the both sides mould sets up respectively in the die block both sides, is the opening form that makes progress, and both sides form and die block are integral connection.
The outer mold is an integral stainless steel template with the same cross section and different longitudinal lengths, the inner mold is designed according to the actual size of the box girder, and the longitudinal lengths of the inner mold and the outer mold are consistent.
A case roof beam template, as preferred mode, the external mold includes two external mold beam-ends sections and at least one external mold flexible segment, external mold beam-ends section and external mold flexible segment are the integral of compriseing both sides mould and die block, the flexible segment of external mold is longitudinal connection end to end in proper order, the flexible segment outside of external mold at both ends is connected with two external mold beam-ends sections respectively.
The span-medium section range is a telescopic section, and the beam end and variable section range is a beam end section. Two ends are provided with beam end sections, and the middle is provided with a plurality of telescopic sections, wherein the length of each telescopic section is 1 m. The span of the box girder is adjusted by increasing and reducing a plurality of telescopic sections, and the span adjusting range is 20-40 m.
A case roof beam template, as preferred mode, the self-supporting system includes side form support system and rigid base, side form support system sets up in side form orthographic projection position, rigid base sets up at the die block lower extreme.
A case roof beam template, as preferred mode, rigid base and side form support system solidify.
A case roof beam template, as preferred mode, side form support system includes four at least hydraulic stems, and two a set of four hydraulic stems set up respectively in the horizontal both ends side form edge of a wing position of external mold, two hydraulic stems slant cross arrangement.
A case roof beam template, as preferred mode, rigid base includes crossbeam and jack, the crossbeam transversely sets up in the die block lower extreme, the jack evenly transversely sets up in the crossbeam lower extreme.
The rigid base saves the construction area and the condition limitation of the construction site.
A case roof beam template, as preferred mode, crossbeam horizontal length is more than or equal to external mold horizontal length, the hydraulic stem lower extreme sets up on the crossbeam, every line of jack sets up five.
The transverse beam has high transverse rigidity (such as a steel truss beam), and the transverse length of the transverse beam exceeds that of the outer die, so that the hydraulic rod is conveniently fixed on the rigid base.
A case roof beam template, as preferred mode, the crossbeam sets up in beam-ends festival section and flexible festival section both ends.
A case roof beam template, as preferred mode, external mold bottom surface position is provided with stop device.
A case roof beam template, as preferred mode, be provided with automatic control device on the support system.
The jack is synchronously jacked when the beam bottom is reversely arched, and the oil pressure is controlled through the displacement sensor.
A case roof beam template, as preferred mode, the centre form includes two centre form beam-ends festival section and the flexible festival section of at least one centre form, the flexible festival section of centre form is longitudinal joint end to end in proper order, the flexible festival section outside of centre form at both ends is connected with two centre form beam-ends festival sections respectively.
The utility model discloses beneficial effect as follows:
(1) the construction time and the land area are saved, and the method is suitable for the prefabrication engineering of the same series of box girders with different spans;
(2) the using amount of the template is saved, and a reinforced concrete strip foundation below the traditional template does not need to be additionally manufactured, so that the self-supporting system of the utility model is directly supported on the treated ground;
(3) and millimeter-scale intelligent pre-camber adjustment is realized.
Drawings
FIG. 1 is a schematic view of the box girder template as a whole;
FIG. 2 is a schematic view of an outer mold section of a box girder mold plate;
FIG. 3 is a schematic view of an inner mold segment of a box girder template;
FIG. 4 is a schematic view of a self-supporting system of the box girder template;
FIG. 5 is a schematic view of a rigid base of the box girder template;
fig. 6 is a schematic view of a box girder template side-form supporting system.
Reference numerals:
1. an outer mold; 11. an outer mold beam end segment; 12. an outer mold telescopic section; 2. an inner mold; 21. an inner mould beam end segment; 22. an inner mold telescoping segment; 3. a self-supporting system; 31. a rigid base; 311. a cross beam; 312. a jack; 32. a side form support system; 321. a hydraulic rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
As shown in fig. 1, the box girder template comprises an outer mold 1, an inner mold 2 and a self-supporting system 3, wherein the outer mold 1 comprises two side molds and a bottom mold, the two side molds are respectively arranged on two sides of the bottom mold and are in an upward opening shape, the two side molds and the bottom mold are integrally connected, the inner mold 2 is arranged inside the outer mold 1, and the self-supporting system 3 supports the outer mold 1.
As shown in fig. 2, the outer mold 1 includes two outer mold beam end sections 11 and at least one outer mold telescopic section 12, the outer mold telescopic sections 12 are sequentially connected end to end in a longitudinal direction, and the outer sides of the outer mold telescopic sections 12 at both ends are respectively connected with the two outer mold beam end sections 11.
As shown in fig. 3, the inner mold 2 includes two inner mold beam end segments 21 and at least one inner mold telescopic segment 22, the inner mold telescopic segments 22 are sequentially longitudinally connected end to end, and the outer sides of the inner mold telescopic segments 22 at both ends are respectively connected with the two inner mold beam end segments 21.
The span-medium section range is a telescopic section, and the beam end and variable section range is a beam end section. Two ends are provided with beam end sections, and the middle is provided with a plurality of telescopic sections, wherein the length of each telescopic section is 1 m. The span of the box girder is adjusted by increasing and reducing a plurality of telescopic sections, and the span adjusting range is 20-30 m.
As shown in FIG. 3, the self-supporting system 3 comprises a side mold supporting system 32 and a rigid base 31, wherein the side mold supporting system 32 is arranged at the orthographic projection position of the side mold, and the rigid base 31 is arranged at the lower end of the bottom mold.
As shown in fig. 5, the rigid base 31 includes a cross beam 311 and a jack 312, the cross beam 311 is transversely disposed at the lower end of the bottom mold, and the jack 312 is uniformly transversely disposed at the lower end of the cross beam 311. The transverse length of the cross beam 311 is larger than or equal to that of the outer die 1, the lower end of the hydraulic rod 321 is arranged on the cross beam 311, and five jacks 312 are arranged in each row. The cross beam 311 is arranged at two ends of the outer mold beam end section 11 and the outer mold telescopic section 12. Two transverse steel beams are transversely welded below each section of the formwork, and the cross beams 311 are longitudinally connected through steel member welding or bolts. A row of jacks 312 are arranged below each cross beam 311, and steel plates are required to be padded below the jacks 312. The integral external mold 1 and the cross beam 311 are welded firmly without a gap.
As shown in fig. 6, the side mold supporting system 32 includes at least four hydraulic rods 321, two of the four hydraulic rods 321 are in a group, and are respectively disposed at the side mold flanges at the two lateral ends of the external mold 1, and the two hydraulic cylinders are disposed in an oblique cross manner.
The bottom surface of the external mold 1 is provided with a limiting device.
The beam end section and the telescopic section are provided with transverse limiting blocks on the bottom surfaces, and the transverse limiting blocks are buckled with the limiting blocks arranged on the ground to limit the transverse displacement of the beam end section or the telescopic section.
An automatic control device is arranged on the self-supporting system 3. And inputting the bottom-of-beam anti-arch curve by using a human-computer control interface in the synchronous jacking system, calculating a target jacking amount value of each row of longitudinal jacks, and then controlling the bottom-of-beam jacks to jack up to the target value synchronously to form the bottom-of-beam anti-arch curve.
The joints of the segments are externally connected through bolts, then the joints are welded on the inside, and then the inner surfaces are polished and coated with release agents. The method for decomposing each segment comprises the steps of detaching the bolts and cutting the welding seams. And when the telescopic segment is moved, the gantry crane is adopted to hoist the segment.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A box girder template is characterized in that: including external mold (1), centre form (2), self-supporting system (3), centre form (2) set up in inside external mold (1), self-supporting system (3) support external mold (1), external mold (1) includes two side forms and a die block, two the side form sets up respectively in the die block both sides, is upwards opening form, two the side form with the die block is integral connection.
2. A box girder template according to claim 1, wherein: the outer die (1) comprises two outer die beam end sections (11) and at least one outer die telescopic section (12), the outer die beam end sections (11) and the outer die telescopic section (12) are all an end die and two, the side die and the bottom die form an integral body, the outer die telescopic sections (12) are sequentially longitudinally connected end to end, and the outer sides of the outer die telescopic sections (12) are respectively connected with the outer die beam end sections (11).
3. A box girder template according to claim 2, wherein: self-supporting system (3) include side form support system (32) and rigid base (31), side form support system (32) set up side form orthographic projection position, rigid base (31) set up the die block lower extreme.
4. A box girder template according to claim 3, wherein: the side die supporting system (32) comprises at least four hydraulic rods (321), four hydraulic rods (321) are in a group, two hydraulic rods (321) are respectively arranged at the transverse two ends of the outer die (1) and the flange positions of the side die, and the two hydraulic rods (321) are arranged in a crossed mode in an inclined mode.
5. A box girder template according to claim 4, wherein: rigid base (31) include crossbeam (311) and jack (312), crossbeam (311) transversely set up in the die block lower extreme, jack (312) evenly transversely set up in crossbeam (311) lower extreme.
6. A box girder template according to claim 5, wherein: the transverse length of the cross beam (311) is larger than or equal to that of the outer die (1), the lower end of the hydraulic rod (321) is arranged on the cross beam (311), and five jacks (312) are arranged in each row.
7. A box girder template according to claim 5, wherein: the cross beams (311) are arranged at the two longitudinal ends of the outer die beam end section (11) and the outer die telescopic section (12).
8. A box girder template according to any one of claims 1 to 7, wherein: and a limiting device is arranged at the bottom surface of the outer die (1).
9. A box girder template according to claim 8, wherein: an automatic control device is arranged on the self-supporting system (3).
10. A box girder template according to claim 9, wherein: the inner die (2) comprises two inner die beam end sections (21) and at least one inner die telescopic section (22), the inner die telescopic sections (22) are sequentially longitudinally connected end to end, and the outer sides of the inner die telescopic sections (22) at the two ends are respectively connected with the two inner die beam end sections (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920820141.6U CN211074037U (en) | 2019-06-03 | 2019-06-03 | Box girder template |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920820141.6U CN211074037U (en) | 2019-06-03 | 2019-06-03 | Box girder template |
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| Publication Number | Publication Date |
|---|---|
| CN211074037U true CN211074037U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920820141.6U Active CN211074037U (en) | 2019-06-03 | 2019-06-03 | Box girder template |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110091420A (en) * | 2019-06-03 | 2019-08-06 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of box girder formwork |
-
2019
- 2019-06-03 CN CN201920820141.6U patent/CN211074037U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110091420A (en) * | 2019-06-03 | 2019-08-06 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of box girder formwork |
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