CN211171630U - Steel-wood composite structure box girder outer formwork - Google Patents
Steel-wood composite structure box girder outer formwork Download PDFInfo
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- CN211171630U CN211171630U CN201921244064.0U CN201921244064U CN211171630U CN 211171630 U CN211171630 U CN 211171630U CN 201921244064 U CN201921244064 U CN 201921244064U CN 211171630 U CN211171630 U CN 211171630U
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Abstract
The utility model discloses a steel-wood composite structure box girder outer template, which relates to the technical field of bridge engineering, and comprises a bottom template, a plurality of main distribution beams and a plurality of auxiliary distribution beams, wherein the main distribution beams are arranged in parallel along the bridge direction; the two side templates are respectively arranged on two sides of the bottom template and comprise a plurality of bottom beams and a plurality of top beams, and the bottom beams and the top beams are connected through a truss; two adjustment mechanism connect respectively in main distribution roof beam both ends to link to each other with the floorbar of both sides, adjustment mechanism includes main distribution roof beam regulation section, is equipped with the multiunit along the equidistant regulation hole that sets up of cross-bridge on the main distribution roof beam regulation section, and main distribution roof beam both ends and the one end that the floorbar is close to main distribution roof beam regulation section all are equipped with the locating hole that is used for fixed main distribution roof beam regulation section, and the locating hole passes through locating part fixed connection with the regulation hole. The utility model discloses, the installation is dismantled conveniently, and the width of adjustable die block board adapts to the case roof beam of different widths, improves the utilization ratio of exterior sheathing, practices thrift engineering cost.
Description
Technical Field
The utility model relates to a bridge engineering technical field, concretely relates to steel wood integrated configuration case roof beam exterior sheathing.
Background
In the construction of the cast-in-place box girder in the bridge engineering, prefabricated templates are adopted and are designed, manufactured and installed according to the size of the box girder. The appearance quality of the box girder is the visual embodiment of the quality of the concrete box girder, and the outer template is a main component for ensuring the accurate appearance size and the good and bad appearance quality of the box girder.
The existing box girder external template comprises a wing mold, a web mold and a bottom mold, wherein a split bolt is mostly adopted between the web mold and the bottom mold for reinforcement, and the lateral pressure of newly cast concrete is balanced, a large number of split bolt holes can be generated in the later stage, and certain influence is generated on the appearance quality of the box girder concrete after forming. In addition, because the size of the outer template is fixed, one outer template can only be used for pouring the box girder with a corresponding width, so that the turnover rate of the outer template is low, the material consumption is large, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a steel wood integrated configuration case roof beam exterior sheathing, the width of die block board is adjusted to the accessible to adapt to the case roof beam of different widths, improve the utilization ratio of case roof beam exterior sheathing.
In order to achieve the above purpose, the utility model adopts the technical proposal that: the utility model provides a steel wood integrated configuration case roof beam exterior sheathing which includes:
the bottom template comprises a plurality of main distribution beams which are arranged in parallel along the bridge direction;
the number of the side templates is two, the two side templates are respectively arranged on two sides of the bottom template, each side template comprises a plurality of bottom beams and a plurality of top beams, and the bottom beams and the top beams are connected through trusses;
the adjusting mechanisms are connected to two ends of the main distribution beam respectively and connected with the bottom beams on two sides, each adjusting mechanism comprises a main distribution beam adjusting section, a plurality of groups of adjusting holes are formed in the main distribution beam adjusting section and are arranged at equal intervals along the transverse bridge direction, positioning holes used for fixing the main distribution beam adjusting section are formed in two ends of the main distribution beam and one end, close to the main distribution beam adjusting section, of each bottom beam, and the positioning holes are fixedly connected with the adjusting holes through limiting parts.
On the basis of the technical scheme, the positioning hole is a screw hole, the limiting part is a first bolt, the adjusting hole is a screw hole or a waist-round hole, and the limiting part sequentially penetrates through the adjusting hole and the positioning hole and is in threaded connection with the nut.
On the basis of the technical scheme, the limiting part is respectively sleeved with a first steel base plate and a second steel base plate, the first steel base plate is located between the head of the limiting part and the adjusting section of the main distribution beam, and the second steel base plate is located between the nut and the main distribution beam or the bottom beam.
On the basis of the technical scheme, the main distribution beam comprises at least two main distribution beam standard sections, and the end parts of the two adjacent main distribution beam standard sections are fixedly connected back to back through second bolts (12).
On the basis of the technical scheme, the main distribution beams, the bottom beams and the main distribution beam adjusting sections are all channel steel with the same specification, the bottom beams and the adjacent main distribution beam standard sections are arranged on the same straight line in the transverse bridge direction, the opening directions of the bottom beams and the adjacent main distribution beam standard sections are the same, and the end parts of the main distribution beam adjusting sections are respectively connected with the main distribution beam standard sections and the bottom beams on the two sides of the main distribution beam adjusting sections back to back.
On the basis of the technical scheme, a plurality of first distribution beams are vertically arranged above the main distribution beams, and bottom formwork panels are fixed above the first distribution beams.
On the basis of the technical scheme, a plurality of secondary distribution beams are vertically arranged on one sides, far away from the bottom beam, of the top beams, and side formwork panels are fixed on one sides, far away from the top beams, of the secondary distribution beams.
On the basis of the technical scheme, the top beam comprises a horizontal section which is arranged corresponding to the box girder wing plate and is gradually reduced in height, a transition section which corresponds to the position between the box girder wing plate and the box girder web plate, and a vertical section which corresponds to the box girder web plate.
On the basis of the technical scheme, the side template panel is formed by bending a bamboo plywood at one time, and the cross section of the side template panel is of an arc structure consistent with the shape of the top beam.
On the basis of the technical scheme, the truss comprises a plurality of vertical web members and a plurality of diagonal web members, the vertical web members are arranged in parallel, and the diagonal web members are obliquely arranged between the adjacent vertical web members or between the vertical web members and the top beam.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model provides a steel wood integrated configuration case roof beam exterior sheathing, main distribution roof beam both ends are respectively through the floorbar of adjustment mechanism fixed connection both sides, and not only the installation is dismantled conveniently, still can adjust the case roof beam of the different width of width adaptation of floorbar, improves the utilization ratio of exterior sheathing, practices thrift engineering cost.
(2) The utility model provides a steel wood integrated configuration case roof beam exterior sheathing need not to set up the split bolt between two side formworks, at the in-process of pouring the case roof beam, newly-poured concrete's weight and the main distribution roof beam of lateral pressure accessible side formworks transmission to the die block, both can balance newly-poured concrete's weight and lateral pressure, make the template system reach static equilibrium state, still can guarantee the appearance quality of case roof beam.
Drawings
Fig. 1 is a schematic structural view of an outer formwork of a steel-wood composite structure box girder in an embodiment of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
fig. 3 is an enlarged schematic view of B in fig. 1.
In the figure: 1-main distribution beam, 11-main distribution beam standard section, 12-second bolt, 13-third steel backing plate, 2-bottom beam, 3-top beam, 31-horizontal section, 232-transition section, 33-vertical section, 4-truss, 41-vertical web member, 42-diagonal web member, 5-main distribution beam adjusting section, 51-adjusting hole, 52-limiting member, 53-second steel backing plate, 6-first distribution beam, 7-bottom formwork panel, 8-second distribution beam and 9-side formwork panel.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1-3, the present invention provides an embodiment of an external formwork for a steel-wood composite structure box girder, which includes a bottom formwork, a side formwork and an adjusting mechanism. The bottom template and the side templates are arranged on a beam bottom supporting structure, and the beam bottom supporting structure is arranged on a solid foundation.
The bottom formwork comprises a plurality of main distributing beams 1 which are arranged in parallel, and the main distributing beams 1 are arranged along the bridge direction. The number of the side templates is two, the two side templates are respectively arranged on two sides of the bottom template, and the two side templates are arranged along the transverse bridge direction. The sideforms comprise a plurality of bottom beams 2 and a plurality of top beams 3, the bottom beams 2 and the top beams 3 being fixedly connected by trusses 4. The plurality of bottom beams 2 and the plurality of top beams 3 are all arranged in parallel along the bridge direction.
The number of the adjusting mechanisms is two, the two adjusting mechanisms are respectively connected to two ends of the main distribution beam 1 and connected with the bottom beams 2 on two sides, each adjusting mechanism comprises a main distribution beam adjusting section 5, in order to quantitatively adjust the width of the bottom template, a plurality of groups of adjusting holes 51 are formed in the main distribution beam adjusting section 5 and are arranged at equal intervals along the transverse bridge direction, and each group is provided with at least two adjusting holes. Both ends of the main distribution beam 1 and one end of the bottom beam 2 close to the main distribution beam adjusting section 5 are provided with positioning holes for fixing the main distribution beam adjusting section 5, and the positioning holes are fixedly connected with the adjusting holes 51 through limiting parts 52. The length of the main distribution beam adjusting section 5 between the main distribution beam 1 and the bottom beam 2 is adjusted through the matching of the positioning holes on the main distribution beam 1 and the bottom beam 2 and different adjusting holes 51 on the main distribution beam adjusting section 5, and the width adjustment of the bottom template is realized.
According to the steel-wood composite structure box girder outer template, the two ends of the main distribution beam are fixedly connected with the bottom beams on the two sides through the adjusting mechanisms respectively, so that a wall-through split bolt reinforcing mode adopted by the existing box girder template is replaced, on one hand, the outer template is convenient to integrally install and disassemble, the width of the bottom template can be adjusted to adapt to box girders with different widths, the utilization rate of the outer template is improved, and the engineering cost is saved; on the other hand, in the process of symmetrically pouring the box girder, due to the symmetry of pouring the box girder concrete, the weight and the lateral pressure of the newly poured concrete can be transferred to the main distribution girder of the bottom template through the side template, so that the weight and the lateral pressure of the newly poured concrete can be balanced, the template system can reach a static balance state, and the appearance quality of the box girder can be ensured.
The positioning holes are screw holes, the limiting members 52 are first bolts, the adjusting holes 51 are screw holes or oval holes, and the limiting members 52 sequentially penetrate through the adjusting holes 51 and the positioning holes and are in threaded connection with nuts. When the adjusting hole 51 is a waist round hole along the length direction of the main distribution beam adjusting section 5, the two ends of the main distribution beam adjusting section 5 are respectively connected with the main distribution beam 1 and the bottom beam 2 at the two sides in a fine-tuning manner through limiting pieces arranged in the waist round holes at the two sides.
The limiting piece 52 is sleeved with a first steel backing plate and a second steel backing plate 53, the first steel backing plate is located between the head of the limiting piece 52 and the main distribution beam adjusting section 5, and the second steel backing plate 53 is located between the nut and the main distribution beam 1 or the bottom beam 2. The first and second steel shim plates 53 can enhance the fastening of the connection of the limiting member 52.
On the basis of the above embodiment, in the present embodiment, the main distribution beam 1 includes at least two main distribution beam standard sections 11, and the ends of the two adjacent main distribution beam standard sections 11 are fixedly connected back to back through the second bolts 12. And a third steel backing plate 13 is arranged between the fastening nut on the second bolt 12 and the standard section 11 of the main distribution beam. According to actual requirements, a plurality of main distribution beam standard sections 11 can be arranged to adapt to the width of the box beam.
The main distribution beam 1, the bottom beam 2 and the main distribution beam adjusting section 5 are channel steel with the same specification, and the openings of the channel steel are arranged towards the bridge direction. The floorbar 2 and the adjacent standard section 11 of the main distribution beam are arranged on the same straight line of the transverse bridge direction, the opening direction is the same, the length of the section 5 of the main distribution beam is smaller than that of the main distribution beam 1 and the floorbar 2, two ends of the section 5 of the main distribution beam are respectively connected with the standard section 11 of the main distribution beam and the floorbar 2 on two sides of the section in a back-to-back mode, namely, the opening of the channel steel of the section 5 of the main distribution beam is opposite to the opening direction of the main distribution beam 1 and the floorbar 2, so that the stability of the section 5 of the main distribution beam connected with the main distribution beam 1 and the floorbar 2 is enhanced.
A plurality of first secondary distribution beams 6 are vertically arranged above the plurality of main distribution beams 1, namely the first secondary distribution beams 6 are arranged along the transverse bridge direction, and the plurality of main distribution beams 1 and the plurality of first secondary distribution beams 6 form a framework system of the bottom formwork. A bottom formwork panel 7 is fixed above the first distributing beam 6. The bottom form panel 7 can be made of a bamboo plywood with the thickness of 15mm and is fixed on the first distribution beam 6 through steel nails. The first distribution beam 6 is made of square wood, and the specification and the arrangement distance of the first distribution beam are reasonably arranged according to stress analysis of the first distribution beam, so that the bottom formwork panel 7 is supported.
One side that a plurality of back timber 3 kept away from floorbar 2 is provided with a plurality of secondary distribution roof beams 8 perpendicularly, and secondary distribution roof beam 8 arranges along the horizontal bridge to promptly, and a plurality of back timber 3, floorbar 2 and truss 4 constitute the steel frame construction of side form, then steel frame construction and the secondary distribution roof beam 8 of its top form the reinforcement skeleton of side form. The side of the secondary distribution beam 8 remote from the header 3 is secured with sideform panels 9. The side formwork panel 9 is formed by bending a thin bamboo plywood and is fixed on the secondary distribution beam 8 through steel nails. Wherein, the secondary distribution beam 8 adopts the square timber, and its specification and the interval of arranging carry out rational arrangement according to its atress analysis, play the effect of supporting side form panel 9.
The top beam 3 is formed by bending a section steel material according to the sizes of the box girder wing plate and the box girder web plate, and can be made of square steel, round steel pipes or I-shaped steel. Top beam 3 includes the horizontal segment 31 that corresponds box girder pterygoid lamina setting and highly reduce gradually, and top beam 3 still includes the changeover portion 32 that corresponds the position between box girder pterygoid lamina and the box girder web, and top beam 3 still includes the vertical segment 33 that corresponds the box girder web setting.
The side template panel 9 is formed by bending a bamboo plywood at one time, and the section of the side template panel is of an arc structure with the shape consistent with that of the top beam 3. In order to ensure the bending effect of the side template panel 9, a bamboo plywood with the thickness of 8mm can be selected for bending. The side formwork panel 9 is formed by bending a whole bamboo rubber plate, so that the appearance quality of the arc chamfer of the concrete box girder is ensured, and the seams in the existing wood formwork construction are reduced.
The truss 4 includes a plurality of vertical web members 41 and a plurality of diagonal web members 42, the plurality of vertical web members 41 being arranged in parallel with each other, and the diagonal web members 42 being arranged obliquely between the adjacent vertical web members 41 or between the vertical web members 41 and the top beam 3. The vertical web members 41 and the diagonal web members 42 are made of section steel, and can be made of square steel, steel pipes or channel steel.
In the embodiment, according to the linear structure size of the cast-in-place box girder web plate, the width of the bottom plate and the bearing load of each part of the side template and the bottom template, stress analysis and calculation are performed, and under the condition that the requirements of strength, rigidity and stability of each part and convenience in processing are met, appropriate materials are selected to be processed, manufactured and molded in factories, so that each part of the side template and the bottom template is obtained. Wherein, the length of the bottom beam extending into the bottom template can be set to be 50cm so as to be convenient for connecting and fixing with the main distribution beam adjusting section.
In the process of pouring the box girder, because of the symmetry of the box girder concrete pouring, lateral pressure with equal size and symmetrical direction is respectively generated on lateral templates at two sides by webs at two sides of the box girder transverse bridge, when the lateral templates bear the lateral pressure, the lateral pressure can be sequentially transmitted to a main distribution beam of a bottom template by a lateral template panel, a secondary distribution beam 8 and a reinforced framework of the lateral templates, the weight and the lateral pressure of newly poured concrete are finally shared by the bottom beam and the main distribution beam, and an outer template system can reach a static balance state.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.
Claims (10)
1. The utility model provides a steel wood integrated configuration case roof beam exterior sheathing which characterized in that, it includes:
the bottom template comprises a plurality of main distribution beams (1) which are arranged in parallel along the bridge direction;
the number of the side templates is two, the two side templates are respectively arranged on two sides of the bottom template, each side template comprises a plurality of bottom beams (2) and a plurality of top beams (3), and the bottom beams (2) and the top beams (3) are connected through trusses (4);
adjustment mechanism, its quantity is two, connects respectively in main distribution roof beam (1) both ends to bottom girder (2) with both sides link to each other, adjustment mechanism includes main distribution roof beam regulation section (5), be equipped with multiunit along adjusting hole (51) of horizontal bridge to equidistant setting on main distribution roof beam regulation section (5), main distribution roof beam (1) both ends and bottom girder (2) are close to the one end that main distribution roof beam regulated section (5) and all are equipped with the locating hole that is used for fixed main distribution roof beam regulation section (5), the locating hole passes through locating part (52) fixed connection with adjusting hole (51).
2. The steel-wood composite structure box girder outer formwork of claim 1, wherein: the locating hole is the screw, and locating part (52) are first bolt, and regulation hole (51) are screw or waist round hole, locating part (52) pass regulation hole (51) and locating hole in proper order and with the nut spiro union.
3. The steel-wood composite structure box girder outer formwork of claim 2, wherein: the locating part (52) is gone up the cover respectively and is equipped with first steel backing plate and second steel backing plate (53), first steel backing plate is located between locating part (52) head and the main distribution roof beam regulation section (5), second steel backing plate (53) are located between nut and main distribution roof beam (1) or floorbar (2).
4. The steel-wood composite structure box girder outer formwork of claim 1, wherein: the main distribution beam (1) comprises at least two main distribution beam standard sections (11), and the end parts of the two adjacent main distribution beam standard sections (11) are fixedly connected back to back through second bolts (12).
5. The steel-wood composite structure box girder outer formwork of claim 4, wherein: the utility model discloses a bridge of distributing beam, including main distribution beam (1), floorbar (2) and main distribution beam regulation section (5), the channel-section steel that is the same specification is adjusted to main distribution beam (1), floorbar (2) and main distribution beam, floorbar (2) and adjacent main distribution beam standard section (11) set up on horizontal bridge same straight line and the opening direction is the same, the tip of main distribution beam regulation section (5) is connected back to back rather than main distribution beam standard section (11) and floorbar (2) of both sides respectively.
6. The steel-wood composite structure box girder outer formwork of claim 1, wherein: a plurality of first distributing beams (6) are vertically arranged above the main distributing beams (1), and bottom formwork panels (7) are fixed above the first distributing beams (6).
7. The steel-wood composite structure box girder outer formwork of claim 1, wherein: a plurality of one side that back timber (3) kept away from bottom girder (2) is provided with a plurality of secondary distribution roof beams (8) perpendicularly, one side that back timber (3) were kept away from in secondary distribution roof beam (8) is fixed with side form panel (9).
8. The steel-wood composite structure box girder outer formwork of claim 7, wherein: the top beam (3) comprises a horizontal section (31) which is arranged corresponding to a box beam wing plate and is gradually reduced in height, a transition section (32) which is arranged between the box beam wing plate and a box beam web plate, and a vertical section (33) which is arranged corresponding to the box beam web plate.
9. The steel-wood composite structure box girder outer formwork of claim 8, wherein: the side template panel (9) is formed by bending a bamboo rubber plate at one time, and the cross section of the side template panel is of an arc structure with the shape consistent with that of the top beam (3).
10. The steel-wood composite structure box girder outer formwork of claim 1, wherein: truss (4) include a plurality of web members (41) and a plurality of diagonal web members (42), a plurality of web members (41) parallel arrangement each other that stand, diagonal web member (42) slope set up in adjacent web member (41) or between web member (41) and back timber (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921244064.0U CN211171630U (en) | 2019-08-02 | 2019-08-02 | Steel-wood composite structure box girder outer formwork |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921244064.0U CN211171630U (en) | 2019-08-02 | 2019-08-02 | Steel-wood composite structure box girder outer formwork |
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| CN211171630U true CN211171630U (en) | 2020-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417218A (en) * | 2021-07-29 | 2021-09-21 | 中建八局第四建设有限公司 | Prestressed concrete half-inverted T-shaped invisible bent cap steel-wood combined template and construction method |
-
2019
- 2019-08-02 CN CN201921244064.0U patent/CN211171630U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417218A (en) * | 2021-07-29 | 2021-09-21 | 中建八局第四建设有限公司 | Prestressed concrete half-inverted T-shaped invisible bent cap steel-wood combined template and construction method |
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Address after: No. 197, Yingwu Avenue, Hanyang District, Wuhan, Hubei Province, 430000 Patentee after: Wuhan Zhiyuan Construction Group Co.,Ltd. Address before: 430050 5th to 6th floors, Building 12, Zhiyin International Tea City, Hanyang District, Wuhan City, Hubei Province Patentee before: Wuhan Zhiyuan Municipal Construction Engineering Co.,Ltd. |
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