CN215629274U - Light prefabricated section gate-type pier capping beam structure - Google Patents
Light prefabricated section gate-type pier capping beam structure Download PDFInfo
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- CN215629274U CN215629274U CN202121538310.0U CN202121538310U CN215629274U CN 215629274 U CN215629274 U CN 215629274U CN 202121538310 U CN202121538310 U CN 202121538310U CN 215629274 U CN215629274 U CN 215629274U
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- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000011065 in-situ storage Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000004567 concrete Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000007596 consolidation process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000009417 prefabrication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a light prefabricated split gate type pier capping beam structure, which comprises at least two capping beam prefabricated sections; each capping beam prefabricated section is in a T-shaped cross section; wing plates are arranged on the prefabricated sections of each bent cap; a vertical plate is arranged below each wing plate; the lower end of each vertical plate is provided with a height arc structure protruding downwards; between every two adjacent strip structures, flanges of two corresponding wing plates are fixedly connected through a UHPC material wet joint, and a plurality of cast-in-situ UHPC material diaphragm plates are fixedly connected between two corresponding vertical plates; the upper end of each cast-in-situ UHPC material diaphragm plate is connected with the corresponding wing plate and the corresponding UHPC material wet joint, and the lower end of each cast-in-situ UHPC material diaphragm plate is positioned above the combination position between the corresponding vertical plate and the corresponding height-variable arc structure. The utility model does not need welding, has little workload of reinforcing steel bars on site, only needs the flange top wet-joint hanging die and the diaphragm hanging die, and does not need a large amount of templates.
Description
Technical Field
The utility model relates to the technical field of capping beam construction, in particular to a lightweight prefabricated split gate type pier capping beam structure.
Background
With the acceleration of urbanization development, the construction requirements for rapidness, greenness and low influence in the bridge construction process are increasingly enhanced. The prefabrication and assembly technology of the bridge can be well adapted to the requirements in the aspect.
For urban elevated bridges for riding on ground roads, portal piers are usually adopted, and capping beams are the most basic and important component members in the portal pier structure. Because the construction is limited by the hoisting and mounting capacity on site, the existing engineering mostly adopts a steel bent cap form, and the cost is higher.
Therefore, how to make the gate-type pier capping beam not only meet the requirement of quick construction, but also have better economical efficiency becomes a technical problem which needs to be solved urgently by technicians in the field.
SUMMERY OF THE UTILITY MODEL
In view of the defects in the prior art, the utility model provides the light prefabricated split gate type pier capping beam structure, and the aims of no need of welding, less workload of on-site reinforcing steel bars, only need of a flange top wet joint hanging die and a diaphragm plate hanging die, no need of a large number of templates and obvious advantage in economy compared with a steel capping beam are achieved.
In order to achieve the purpose, the utility model discloses a light prefabricated split gate type pier capping beam structure which comprises at least two capping beam prefabricated sections.
The two or more than two precast sections of the bent cap are arranged in parallel along the width direction of the bent cap, and the two side surfaces of the two precast sections of the bent cap are connected to form a main structure of the bent cap;
each capping beam prefabricated section is of a strip structure with a T-shaped cross section and extends along the length direction of the capping beam;
two sides of each cover beam prefabricated section, which are close to the upper end face, extend along the horizontal direction to form wing plates; a vertical plate which is vertical to the wing plates and extends downwards is arranged below each wing plate;
the lower end of each vertical plate is provided with a height-variable arc structure protruding downwards in the middle of the side face formed by the length and the height of the bent cap;
the flanges of the two corresponding wing plates between every two adjacent strip-shaped structures are fixedly connected through a UHPC material wet joint, and a plurality of cast-in-situ UHPC material diaphragm plates are fixedly connected between the two corresponding vertical plates;
the upper end of each cast-in-place UHPC material diaphragm plate is connected with the corresponding wing plate and the corresponding UHPC material wet joint, and the lower end of each cast-in-place UHPC material diaphragm plate is located above the combination position between the corresponding vertical plate and the corresponding variable-height arc-shaped structure.
Preferably, each precast section of bent cap the riser, and corresponding the riser corresponds the middle part position of pterygoid lamina all is equipped with a plurality of vertical direction of edge and arranges, and follows the prestressing force steel strand that bent cap length direction extends.
Preferably, each precast section of bent cap in the height-variable arc structure and the riser, all be equipped with a plurality of edges the curvature radius direction of the lower terminal surface profile of precast section of bent cap arranges, and follows the prestressing force steel strand that the lower terminal surface profile of precast section of bent cap extends.
Preferably, cast-in-place C60 fiber concrete is filled between every two adjacent precast sections of the main structure of the cover beam close to the end part to form a beam end structure, and the beam end structure is connected with the top of the corresponding upright post.
More preferably, a mortar cushion layer is arranged between each beam end structure and the top of the corresponding upright column.
Preferably, the cross section of the part of each vertical plate, which is provided with the cast-in-place UHPC material diaphragm plate, is in an inverted trapezoid shape, and the width of the part, which is close to the upper end of the corresponding wing plate, is larger than the width of the part, which is close to the lower end of the corresponding wing plate.
More preferably, the cross-sectional area A of each of the risers having an inverted trapezoidal shape1＝1.705m2(ii) a The cross section area A of each corresponding transverse clapboard made of the cast-in-situ UHPC material2＝1.835m2。
Preferably, a plurality of cast-in-place support cushion blocks are arranged on the main body structure of the cover beam.
The utility model has the beneficial effects that:
the utility model adopts UHPC wet connection, does not need welding, has little workload of reinforcing steel bars on site, only needs flange top wet connection hanging die and diaphragm hanging die, does not need a large amount of templates, and has obvious advantage compared with steel cover beams in economy.
The prefabricated single piece has the size of 35x0.95x3.6m, the height of a supporting position is 2.6m, the weight is about 170t, the prefabricated single piece is more suitable for transportation and installation, and the full concrete prefabricated installation of the existing ultra-long door type capping beam with the thickness of more than 35.0m can be realized.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 shows a schematic structural view of a spliced capping beam according to an embodiment of the present invention.
Fig. 2 is a schematic structural view showing a height-variable arc structure protruding from the lower end of a riser according to an embodiment of the present invention.
Fig. 3 shows a schematic cross-sectional structure of two precast sections of the bent cap according to an embodiment of the present invention.
Fig. 4 shows a schematic side view of one end of the capping beam according to an embodiment of the present invention.
Fig. 5 is a schematic top view of one end of the cap beam according to an embodiment of the present invention.
Fig. 6 is a schematic cross-sectional structure diagram of the precast sections of the bent cAN _ SN provided with prestressed steel strands in the middle of the vertical plates and the wing plates in one embodiment of the utility model.
Fig. 7 is a schematic cross-sectional view illustrating the structure of the height-variable arc structure of the precast sections of the capping beam provided with prestressed steel strands according to an embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1 to 5, the lightweight prefabricated segmented gate pier capping beam structure comprises a minimum of two capping beam prefabricated sections 1.
The two or more than two bent cap prefabricated sections 1 are arranged in parallel along the width direction of the bent cap and connected with each other at two sides to form a main structure 5 of the bent cap;
each capping beam prefabricated section 1 is of a strip-shaped structure with a T-shaped cross section and extends along the length direction of the capping beam;
two sides of each bent cap precast section 1 close to the upper end surface extend along the horizontal direction to form wing plates 2; a vertical plate 3 which is vertical to the wing plates 2 and extends downwards is arranged below each wing plate 2;
the lower end of each vertical plate 3 is provided with a height-variable arc structure 4 which protrudes downwards in the middle of the side face formed by the length and the height of the corresponding bent cap;
between every two adjacent strip structures, the flanges of the two corresponding wing plates 2 are fixedly connected through a UHPC material wet joint 6, and a plurality of cast-in-situ UHPC material diaphragm plates 7 are fixedly connected between the two corresponding vertical plates 3;
the upper end of each cast-in-situ UHPC material diaphragm 7 is connected with the corresponding wing plate 2 and the corresponding UHPC material wet joint 6, and the lower end is positioned above the combination position between the corresponding vertical plate 3 and the corresponding height-variable arc-shaped structure 4.
As shown in fig. 6, in some embodiments, the riser 3 of each precast section 1 of the bent cap, and the middle position of the wing panel 2 corresponding to the corresponding riser 3, are provided with a plurality of prestressed steel strands 8 which are arranged in the vertical direction and extend along the length direction of the bent cap.
In some embodiments, as shown in fig. 7, the height-varying arc structures 4 and the risers 3 of each precast sections 1 of the bent cap are provided with a plurality of prestressed steel strands 8 arranged along the curvature radius direction of the profile of the lower end surface of the precast sections 1 of the bent cap and extending along the profile of the lower end surface of the precast sections 1 of the bent cap.
In some embodiments, the space between every two adjacent precast sections 1 of the cover beam at the position close to the end part of the main structure 5 of the cover beam is filled with cast-in-place C60 fiber concrete, and a beam end structure 9 is manufactured and is connected with the top of the corresponding upright post 10 through the beam end structure 9.
In some embodiments, a mortar cushion 11 is provided between each beam-end structure 9 and the top of the corresponding upright 10.
In some embodiments, the portion of each riser 3 provided with a cast-in-place UHPC material diaphragm 7 is inverted trapezoidal in cross-section, with the width of the upper end adjacent the respective wing 2 being greater than the width of the lower end.
In some embodiments, the cross-sectional area A of each inverted trapezoidal riser 31＝1.705m2(ii) a The cross-sectional area A of each corresponding cast-in-place UHPC material diaphragm 72＝1.835m2。
In some embodiments, the main structure 5 of the capping beam is provided with a plurality of cast in place abutment blocks 12.
In practical application, the utility model can select the following two construction technical schemes:
1 consolidation system mounting small box girder
The upright post bent cap forms a consolidation system firstly, and then the small box girder is installed, and the construction process is as follows:
prefabricating the segmented bent cap, wherein the prefabrication comprises a first batch of prestress; transporting and installing the roof beam in pieces, and grouting and connecting the corrugated pipes; connecting the → column top, and forming a consolidation system by adopting cast-in-place C60 fiber concrete; wet-jointing the flange and the diaphragm plate, adopting UHPC material, and adopting cast-in-situ C50 as a flange top supporting cushion block; → hoisting the small box girder, and tensioning the batch prestress in the process; → other subsequent processes.
2 Small box girder for simply supporting system installation
The upright post bent cap simply supports the system earlier, concreties after the installation trabecula, can improve the atress of stand and pile foundation, and the construction process is as follows:
prefabricating the segmented bent cap, wherein the prefabrication comprises a first batch of prestress; transporting and installing the divided capping beam, wherein the supporting structure comprises a rigid supporting structure support and is in a simply supported state, and a tensioning part is prestressed vertically; wet-jointing the flange and the diaphragm plate, adopting UHPC, supporting a cushion block at the top of the flange, and adopting cast-in-situ C50; and → hoisting the small box girder, and tensioning the batch prestress in the process. Connecting the top of the column through cast-in-place C60 fiber concrete, a column top mortar cushion layer and corrugated pipe grouting to form a consolidation system; → other subsequent processes.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A light prefabricated split gate type pier capping beam structure comprises at least two capping beam prefabricated sections (1); the bent cap is characterized in that more than two bent cap prefabricated sections (1) are arranged in parallel along the width direction of the bent cap, and the two sides of the bent cap are connected to form a main body structure (5) of the bent cap;
each capping beam prefabricated section (1) is of a strip structure with a T-shaped cross section and extends along the length direction of the capping beam;
two sides of each bent cap prefabricated section (1) close to the upper end face extend along the horizontal direction to form wing plates (2); a vertical plate (3) which is vertical to the wing plates (2) and extends downwards is arranged below each wing plate (2);
the lower end of each vertical plate (3) is provided with a height-variable arc structure (4) which protrudes downwards in the middle of the side face formed by the length and the height of the bent cap;
flanges of two corresponding wing plates (2) are fixedly connected between every two adjacent strip-shaped structures through UHPC material wet joints (6), and a plurality of cast-in-situ UHPC material diaphragm plates (7) are fixedly connected between two corresponding vertical plates (3);
the upper end of each cast-in-situ UHPC material diaphragm plate (7) is connected with the corresponding wing plate (2) and the corresponding UHPC material wet joint (6), and the lower end of each cast-in-situ UHPC material diaphragm plate is positioned above the combination position between the corresponding vertical plate (3) and the corresponding variable-height arc-shaped structure (4).
2. A lightweight prefabricated segmented gate pier capping beam structure according to claim 1, characterized in that the risers (3) of each capping precast segment (1) and the central portions of the flanges (2) corresponding to the respective risers (3) are provided with prestressed steel strands (8) arranged in the vertical direction and extending along the length of the capping beam.
3. A lightweight prefabricated segmented gate pier capping beam structure according to claim 1, wherein the variable height arc structures (4) and the risers (3) of each capping beam prefabricated section (1) are provided with prestressed steel strands (8) arranged along the radius of curvature of the profile of the lower end surface of the capping beam prefabricated section (1) and extending along the profile of the lower end surface of the capping beam prefabricated section (1).
4. A lightweight prefabricated segmented gate pier capping beam structure according to claim 1, characterized in that the space between every two adjacent capping beam prefabricated sections (1) near the end position of the main structure (5) of the capping beam is filled with cast-in-place C60 fiber concrete to form a beam end structure (9), and the beam end structure (9) is connected with the top of the corresponding upright column (10).
5. A lightweight prefabricated segmented gate pier capping beam structure according to claim 4, characterized in that a mortar cushion (11) is provided between each beam end structure (9) and the top of the corresponding column (10).
6. A lightweight prefabricated segmented gate pier capping beam structure according to claim 1, characterized in that the cross-section of the portion of each riser (3) where the cast-in-place UHPC material diaphragm (7) is located is inverted trapezoidal, the width of the upper end near the corresponding strake (2) being greater than the width of the lower end.
7. A lightweight prefabricated segmented gate pier capping beam structure according to claim 6, characterized in that the cross-sectional area A of each of the risers (3) having an inverted trapezoidal shape1＝1.705m2(ii) a The cross section area A of each corresponding transverse clapboard (7) made of the cast-in-situ UHPC material2＝1.835m2。
8. A lightweight prefabricated segmented gate pier capping beam structure according to claim 1, characterized in that a plurality of cast-in-place abutment blocks (12) are provided on the main structure (5) of the capping beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121538310.0U CN215629274U (en) | 2021-07-07 | 2021-07-07 | Light prefabricated section gate-type pier capping beam structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121538310.0U CN215629274U (en) | 2021-07-07 | 2021-07-07 | Light prefabricated section gate-type pier capping beam structure |
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| CN215629274U true CN215629274U (en) | 2022-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657867A (en) * | 2022-03-31 | 2022-06-24 | 山东省交通规划设计院集团有限公司 | Large-span articulated-rotating-consolidation steel bent cap and construction method |
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2021
- 2021-07-07 CN CN202121538310.0U patent/CN215629274U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657867A (en) * | 2022-03-31 | 2022-06-24 | 山东省交通规划设计院集团有限公司 | Large-span articulated-rotating-consolidation steel bent cap and construction method |
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