CN216864836U - Cast-in-place section template of boundary span handing-over mound department - Google Patents
Cast-in-place section template of boundary span handing-over mound department Download PDFInfo
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- CN216864836U CN216864836U CN202123064702.0U CN202123064702U CN216864836U CN 216864836 U CN216864836 U CN 216864836U CN 202123064702 U CN202123064702 U CN 202123064702U CN 216864836 U CN216864836 U CN 216864836U
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- 238000010276 construction Methods 0.000 claims abstract description 21
- 238000009415 formwork Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000009417 prefabrication Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a cast-in-place section template at a side-span connecting pier, which comprises a beam gap supporting template with the same shape as the cross section of a box girder structure, wherein the beam gap supporting template is a plate-shaped piece with the same thickness as the width of a beam gap at the connecting pier and sequentially comprises a rectangular top plate area, a middle rectangular area, a middle trapezoidal area and a bottom rectangular area from top to bottom. The rectangular top plate area is provided with a top plate permanent prestressed structure preformed hole and a preformed notch template; two sides of the middle rectangular area are respectively provided with a prestress tensioning position reserved hole and a tensioning reserved notch template; two manholes are formed in the middle rectangular area and the middle trapezoidal area, and the manhole formwork penetrates through the cast-in-place beam at the joint pier in thickness; a manhole channel preformed hole, a manhole channel preformed groove template and a limiter preformed groove template are arranged on the beam seam supporting template below the manhole; the bottom rectangular area is provided with a bottom plate prestress tensioning reserved notch and a reserved notch template. The utility model has the advantages of good prefabrication quality, simple installation and disassembly, short construction time and small operation risk.
Description
Technical Field
The utility model relates to the technical field of construction methods of highway and railway bridge structures, in particular to a cast-in-place section template at a side span connecting pier of a support-free continuous rigid frame bridge.
Background
The continuous rigid frame bridge without support is a new bridge type developed in recent years, and compared with the traditional continuous beam (rigid frame) side pier provided with movable supports, the side pier adopts a pier-beam consolidation mode. In order to better adapt to the longitudinal telescopic deformation of the temperature load main beam, the side pier adopts a double-support thin-wall pier with smaller thrust rigidity, and the main beam is only fixedly connected with one thin-wall column. Through the research on related bridges at home and abroad, the continuous rigid frame without the support has the main characteristics that: (1) the support is not arranged, the support damage is avoided, the cost is saved, the later maintenance cost is low, and the line shutdown caused by the support replacement is avoided; (2) the anti-seismic performance is good, the horizontal force can be uniformly distributed on each pier during earthquake, and the continuous girder bridge needs to be provided with braking piers or special anti-seismic supports; (3) the pier beams are directly connected in a fixed mode, lines are continuous and bright, the whole is coordinated, and the landscape effect is good.
If the form of the equal-span continuous rigid structure is adopted, the span of the edge span is consistent with the middle main span. The side span straight line section of the continuous rigid frame is generally constructed by cast-in-place of a support, when the construction is carried out by a conventional method, the input amount of the side span cast-in-place support is very large, and particularly when the pier is high or is positioned in the water area environment such as the sea, the safety risk is high, the construction speed is influenced, and the construction quality is difficult to guarantee.
In order to avoid the adverse factors of the process, engineers propose a construction method for changing the side span cast-in-place section into a hanging basket cantilever construction, a temporary supporting device is arranged at a beam seam between the first side span cast-in-place section and the second side span cast-in-place section, two adjacent side span cast-in-place sections are pulled into a whole by means of temporary high-strength thread thick steel bars, a temporary cable tower is arranged on the temporary supporting device, temporary auxiliary steel ropes are utilized to carry out the staged cantilever construction of the side span cantilever section, and permanent web steel ropes and permanent bottom plate steel ropes are tensioned to enable the side span cantilever section and the middle pier cantilever side span section to be folded. The method has the advantages of good construction quality, low cost, short construction period, good economic benefit and social benefit and the like, and particularly has strong competitiveness in the construction of the deep-water high-pier continuous rigid frame.
SUMMERY OF THE UTILITY MODEL
In order to at least partially overcome the problems in the prior art and match with a construction process of changing a side-span cast-in-place section into a hanging basket cantilever, the utility model provides a cast-in-place section template at a side-span joint pier so as to solve the problem of difficulty in construction at the side-span joint pier in the prior art.
The beam seam temporary beam seam supporting template needs to overcome the following problems:
(1) the beam gap space is narrow, for example, the beam gap of a 3 x 70m rigid frame connecting pier is only 6.4cm, and the beam gap of a 2 x 70mT rigid frame connecting pier is only 8.4cm, so that the difficulty in mounting and dismounting the support is high.
(2) The beam gap support needs to bear the axial force generated by the permanent prestress tension after the temporary prestress tension and in the construction process.
(3) The number of the reserved holes and the reserved notches is large, and the form is complicated.
In order to solve the technical problem, the utility model provides a cast-in-place section template at a side span connecting pier, which is characterized in that: include and support the template with the roof beam seam that box girder construction section appearance is the same, be equipped with a plurality of reservation mouths and manholes on the roof beam seam supports the template, the installation can the dismantlement reserve notch template in the reservation mouth, reserve the detachable manhole template in the manhole.
Adopt glue, interim nail and so on connected mode to link to each other between reservation notch template and the roof beam seam supporting template to demolish in the later stage.
Further, the beam seam supporting template is a plate-shaped part with the thickness being the same as the width of the beam seam at the connecting pier, and sequentially comprises a rectangular top plate area, a middle rectangular area, a middle trapezoidal area and a bottom rectangular area from bottom to bottom.
Furthermore, four reserved ports are arranged in a rectangular top plate area at the top of the beam seam supporting template and serve as a top plate permanent prestressed structure reserved hole, and a top prestressed tensioning reserved notch template with the thickness larger than that of the beam seam supporting template is arranged in the top plate permanent prestressed structure reserved hole.
Furthermore, two sides of a rectangular area in the middle of the upper portion of the beam gap supporting template are respectively provided with a reserved opening serving as a pre-stressed tensioning position reserved hole, and a pre-stressed tensioning reserved notch template which is detachable and is larger than the beam gap supporting template in thickness is arranged in the pre-stressed tensioning position reserved hole.
Furthermore, the middle rectangular area and the middle trapezoidal area on the beam gap supporting template are provided with two manholes, and the thickness of the manhole template penetrates through the cast-in-place beam at the joint pier.
Furthermore, a man-passing channel preformed hole is formed in the beam seam supporting template below the manhole, and a man-passing channel preformed groove template and a limiter preformed groove template which are larger than the beam seam supporting template in thickness are arranged in the man-passing channel preformed hole.
Furthermore, a bottom plate prestress tensioning reserved notch is formed in a bottom rectangular area below the passenger passage reserved hole, and a bottom plate prestress reserved notch template which is detachable and is larger than the beam seam supporting template in thickness is arranged on the bottom plate prestress tensioning reserved notch.
Furthermore, the two sides of the rectangular top plate area of the beam seam supporting template are provided with flange plates which are temporarily additionally arranged, and the flange plates are foam plates.
Further, the beam seam supporting template is made of a Visa board or a steel plate.
The utility model has the following beneficial effects:
the cast-in-place section formwork at the side span connecting pier solves the problems that the quality is not guaranteed, the demolition period is long, the high-altitude operation risk is high and the like in the traditional method, and has the advantages of being good in prefabrication quality, simple to install and demolish, short in construction time, small in operation risk and the like.
Drawings
FIG. 1 is a longitudinal sectional view of a cast-in-place pier anchoring structure at an intersection pier.
FIG. 2 is a cross-sectional view of an anchoring structure of a cast-in-place section at an intersection pier.
FIG. 3 is a schematic view of the preformed holes and notches.
FIG. 4 is a schematic view of a beam slot template.
FIG. 5 is a schematic axial view of a cast-in-place section formwork in an embodiment of the utility model.
FIG. 6 is an elevation view of a cast-in-place section form in an embodiment of the utility model.
1-beam joint at the joint pier, 2-temporary prestressed cable, 3-prestressed twisted steel, 4-joint pier, 5-permanent prestressed beam, 6-temporary prestressed beam, 7-manhole, 8-limiter reserved notch, 9-top plate permanent prestressed structure reserved hole, 10-prestressed tensioning position reserved hole, 11-temporary prestressed structure reserved hole, 12-man-passing channel reserved hole, 13-bottom plate prestressed tensioning reserved notch, 14-beam joint supporting template, 15-top prestressed tensioning reserved notch template, 16-prestressed tensioning reserved notch template, 17-manhole template, 18-limiter reserved notch template, 19-man-passing channel reserved notch template, 20-bottom plate prestressed reserved notch template, 21-temporary zero block, 22-side pier temporary cantilever section and 23-middle pier suspension casting section.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In order to make the purpose and technical solutions of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the accompanying drawings and engineering cases, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 6, the utility model discloses a cast-in-place section formwork at a side span joint pier, which comprises a beam gap supporting formwork 14 with the same shape as the cross section of a box girder structure, wherein the beam gap supporting formwork 14 is provided with a plurality of reserved openings and manholes 7, detachable reserved notch formworks are installed in the reserved openings, and detachable manhole formworks 17 are reserved in the manholes 7;
the beam seam supporting template 14 is a plate-shaped part with the thickness same as the width of the beam seam 1 at the position of the connecting pier, and sequentially comprises a rectangular top plate area, a middle rectangular area, a middle trapezoidal area and a bottom rectangular area from top to bottom.
Four reserved ports are arranged in a rectangular top plate area at the top of the beam seam supporting template 14 and serve as a top plate permanent prestressed structure reserved hole 9, and a top prestressed tensioning reserved notch template 15 with the thickness larger than that of the beam seam supporting template 14 is arranged in the top plate permanent prestressed structure reserved hole 9.
Two sides of the rectangular area in the middle of the upper part of the beam gap supporting template 14 are respectively provided with a reserved opening as a reserved hole 10 of a prestress tensioning position, and a detachable prestress tensioning reserved notch template 16 with the thickness larger than that of the beam gap supporting template 14 is arranged in the reserved hole 10 of the prestress tensioning position.
Two manholes 7 are arranged in the middle rectangular area and the middle trapezoidal area on the beam gap supporting template 14, and the thickness of the manhole template 17 penetrates through the cast-in-place beam at the joint pier.
Be equipped with manway preformed hole 12 on the roof beam seam support die plate 14 of manhole 7 below, cross manway preformed hole 12 below and set up stopper preformed notch 8 and a plurality of interim prestressed structure preformed hole 11, cross manway preformed hole 12 and be equipped with the manway preformed groove template 19 that crosses that thickness is greater than roof beam seam support die plate 14, set up stopper preformed groove template 18 in the stopper preformed notch 8.
A bottom plate prestress tensioning reserved notch 13 is arranged in a bottom rectangular area below the passenger passage reserved hole 12, and a bottom plate prestress reserved notch template 20 which is detachable and is thicker than the beam seam supporting template 14 is arranged on the bottom plate prestress tensioning reserved notch 13.
And flange templates which are temporarily additionally arranged are arranged on two sides of the rectangular top plate area of the beam seam supporting template 14, and the flange templates are foam plates.
The beam seam supporting template 14 is made of a Visa board or a steel plate, the thickness of the beam seam supporting template is equal to that of a beam seam at the position of the connecting pier and is about 6.4 cm.
As shown in FIG. 1, the method of the present invention is as follows:
step 1, when the bridge is constructed to the side span connecting pier, firstly constructing the connecting piers 4 at two sides, and manufacturing a beam joint supporting template 14 according to the end shape of the box girder and the construction requirement;
step 2, manufacturing a bottom template of the cast-in-place area on the top of the connecting pier 4 by adopting a wood template;
step 3, mounting the beam seam supporting template 14 on a bottom template through a temporary support, and well mounting a manhole template 17 and reserved notch templates in each reserved port;
step 4, manufacturing a side template of the cast-in-place area by adopting a wood template, and placing foam with the same thickness as that of the beam gap supporting template 14 at the flange of the beam gap 1 at the connecting pier 4 as a flange template;
The cast-in-place section template of side span handing-over mound department that this embodiment provided has solved traditional method quality and should not guarantee, demolishs the cycle length, and the big scheduling problem of high altitude construction risk has that the prefabrication is of high quality, and the installation is demolishd simply, and construction time is short, operation risk advantage such as little.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope defined by the appended claims.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the utility model. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (9)
1. The utility model provides a cast-in-place section template of mound department is handed over to side span which characterized in that: include and support the template with the roof beam seam that box girder construction section appearance is the same, be equipped with a plurality of reservation mouths and manholes on the roof beam seam supports the template, the installation can the dismantlement reserve notch template in the reservation mouth, reserve the detachable manhole template in the manhole.
2. The cast-in-place section formwork of claim 1, wherein: the beam seam supporting template is a plate-shaped part with the same thickness as the width of a beam seam at the position of the connecting pier, and sequentially comprises a rectangular top plate area, a middle rectangular area, a middle trapezoidal area and a bottom rectangular area from top to bottom.
3. The cast-in-place section formwork of claim 2, wherein: the rectangular top plate area at the top of the beam seam supporting template is provided with four reserved ports as a top plate permanent prestressed structure reserved hole, and a top prestressed tensioning reserved notch template with the thickness larger than that of the beam seam supporting template is arranged in the top plate permanent prestressed structure reserved hole.
4. The cast-in-place section formwork of claim 2, wherein: two sides of a rectangular area in the middle of the upper portion of the beam gap supporting template are respectively provided with a reserved opening serving as a reserved hole in a prestress tensioning position, and a detachable prestress tensioning reserved notch template with the thickness larger than that of the beam gap supporting template is arranged in the reserved hole in the prestress tensioning position.
5. The cast-in-place section formwork of claim 2, wherein: the beam gap supporting template is provided with two manholes in a middle rectangular area and a middle trapezoidal area, and the thickness of the manhole template penetrates through the cast-in-place beam at the joint pier.
6. The cast-in-place section formwork of claim 5, wherein: the beam seam supporting template below the manhole is provided with a man-passing channel preformed hole, and the man-passing channel preformed hole is provided with a man-passing channel preformed groove template and a limiter preformed groove template, wherein the thickness of the man-passing channel preformed hole is larger than that of the beam seam supporting template.
7. The cast-in-place section formwork of claim 6, wherein: the bottom rectangular area below the passenger passage preformed hole is provided with a bottom plate prestress tensioning preformed notch, and the bottom plate prestress tensioning preformed notch is provided with a bottom plate prestress preformed notch template which is detachable and is thicker than the beam seam supporting template.
8. The cast-in-place section formwork of claim 6, wherein: and two sides of the rectangular top plate area of the beam seam supporting template are provided with flange plates which are temporarily additionally arranged, and the flange plates are foam plates.
9. A cast-in-place section formwork as claimed in any one of claims 1 to 8, wherein: the beam seam supporting template is made of a Visa plate or a steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123064702.0U CN216864836U (en) | 2021-12-08 | 2021-12-08 | Cast-in-place section template of boundary span handing-over mound department |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123064702.0U CN216864836U (en) | 2021-12-08 | 2021-12-08 | Cast-in-place section template of boundary span handing-over mound department |
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| Publication Number | Publication Date |
|---|---|
| CN216864836U true CN216864836U (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123064702.0U Expired - Fee Related CN216864836U (en) | 2021-12-08 | 2021-12-08 | Cast-in-place section template of boundary span handing-over mound department |
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| Country | Link |
|---|---|
| CN (1) | CN216864836U (en) |
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2021
- 2021-12-08 CN CN202123064702.0U patent/CN216864836U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220701 |
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| CF01 | Termination of patent right due to non-payment of annual fee |