CN219772687U - Symmetrical balance supporting structure of embedded pier - Google Patents
Symmetrical balance supporting structure of embedded pier Download PDFInfo
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- CN219772687U CN219772687U CN202321300268.8U CN202321300268U CN219772687U CN 219772687 U CN219772687 U CN 219772687U CN 202321300268 U CN202321300268 U CN 202321300268U CN 219772687 U CN219772687 U CN 219772687U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 238000009826 distribution Methods 0.000 claims abstract description 34
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 13
- 238000013461 design Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 6
- 238000012876 topography Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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Abstract
The utility model discloses a symmetrical balance supporting structure of an embedded pier, which is provided with an embedded steel box, an I-shaped distribution beam, a stiffening plate and an inward-shrinking support pad steel plate; the bottoms of cantilever ends at two sides of the I-shaped steel distribution beam are tightly contacted with the side surfaces of the pier column by using stiffening plates, and the I-shaped distribution beam is welded with the stiffening plates; the I-shaped distribution beam is arranged in and penetrates through the embedded steel box, and the vertical center line of the I-shaped distribution beam coincides with the axis of the pier column. The bridge pier is used as a basic carrier for supporting and transmitting the vertical load at the upper part, the carrier foundation is stable, the pressure-resistant structure and material characteristics of the concrete bridge pier are greatly exerted, the upper pressure-bearing limit is high, the clearance space is released, and the consumable is reduced.
Description
Technical Field
The utility model relates to the field of pier support, in particular to a symmetrical balance support structure of a pre-buried pier.
Background
With the deep development of the transportation industry in China, the bridge construction in mountain areas is increasingly increased, and the suspended construction is widely applied in the face of complex geological features in mountain areas. Meanwhile, suspended supporting structures are increasingly developed, and at present, two main supporting modes of suspended structures exist: floor-type supports and pre-buried type supports.
The floor type support is mainly composed of a bracket, a steel pipe upright post and a bailey frame. However, the support has the disadvantages of limited topography and topography, large manpower consumption, wide occupied area, interference with adjacent construction and the like, and the support has the advantages and disadvantages respectively although the support is gradually rich in types, and has weak comprehensive application capability; the steel pipe column support has the problems of easy deflection overrun, foundation treatment, easy generation of tensile stress cracking at the root and the like; the bailey frame is easy to generate lateral instability, stress concentration, difficult to meet the requirements of shearing bearing capacity and the like in the use process.
The embedded support is mainly composed of steel plate embedded parts, anchor hoops and the like. The steel plate embedded part is attached to the side face of the pier stud and welded with other section steel materials, so that a suspended structure between a single pier stud or a plurality of pier studs is supported, the requirement on the welding level is high, the supporting bearing capacity is low, the stability and the safety are poor, and the construction risk is high; the hoop support has the problems of imperfect design and theory, high manufacturing precision, large construction risk and the like.
Aiming at the problems and difficulties existing in various support structures, the improvement of a support structure system and the design of a support structure with strong comprehensive strength become urgent.
Disclosure of Invention
Therefore, in order to solve the above-mentioned shortcomings, the present utility model provides a symmetrical balance support structure of a pre-buried pier. The structure solves the problems of small rigidity, high sensitivity, easily overrun of stress strain, easily eccentric load generation, dependence on topography and geology, high consumption, high cost, low space utilization rate, construction risk when dealing with extreme topography and the like of the support structure between the bridge piers. This patent uses the pier as basic carrier, through set up pre-buried steel sheet box, I shape distribution beam, the stiffening plate that runs through the pier shaft on pier upper portion to with pier axis symmetry, whole balanced load transfer to the pier, with this support pier both sides unsettled structure. From mechanical angle analysis, the structure adopts high model shaped steel more, and calculation length is also less, and middle part and both ends cantilever all with pier shaft intensive contact, and bear symmetrical balanced load, so the local compression area that produces is bigger, and the deformation is littleer when bearing the load, and rigidity is bigger, and the sensitivity is low, and stress, strain, the eccentric load of production are difficult for surpassing the regulation restriction more. The structure and the pier body adopt the inward shrinking steel plate support pad, so that the generation of the pressed cracks can be greatly reduced, and the pier body can be protected more conveniently. The structure is arranged on the upper part of the pier body, so that the space under the bridge and the dependence on the topography and geology are released, the extreme geological topography of a mountain area can be more favorably coped with, and the space utilization rate, the overall stability and the safety of the pier column are improved.
The utility model is realized in such a way, and a symmetrical balance supporting structure of the embedded pier is constructed, which is characterized in that; the supporting structure is provided with an embedded steel box, an I-shaped distribution beam, a stiffening plate and an inward-shrinking support pad steel plate; the bottoms of cantilever ends at two sides of the I-shaped steel distribution beam are tightly contacted with the side surfaces of the pier column by using stiffening plates, and the I-shaped distribution beam is welded with the stiffening plates; the I-shaped distribution beam is arranged in and penetrates through the embedded steel box, and the vertical center line of the I-shaped distribution beam coincides with the axis of the pier column.
The symmetrical balance support structure of the embedded pier is characterized in that; the embedded steel box is of a cuboid steel box structure consisting of four thick steel plates, penetrates through the pier stud and is vertically and symmetrically placed on the central axis of the pier body.
The symmetrical balance support structure of the embedded pier is characterized in that; the inward shrinkage support pad steel plate is a steel plate positioned between the bottom of the I-shaped distribution beam and the embedded steel box, and plays roles in supporting the pad, preventing local overstress and protecting pier column concrete from extrusion damage.
The utility model has the following advantages:
(1) The bridge pier is used as a basic carrier for supporting and transmitting the vertical load at the upper part, the carrier foundation is stable, the pressure-resistant structure and material characteristics of the concrete bridge pier are greatly exerted, the upper pressure-bearing limit is high, the clearance space is released, and the consumable is reduced.
(2) The contact surface between the utility model and the pier is the cross section of the pier and the side surface of the pier body, the contact surface is larger, and the local bearing range is large. The vertical pressure of the cantilever ends at two sides is changed into lateral pressure after being transmitted by the stiffening plate, and the lateral pressure can be mutually offset; the vertical pressure can be transmitted to the ground along the pier body, and the design stress mode of the pier column type structure is met.
(3) The utility model adopts high-model section steel with small length, the cantilevers at the middle part and the two ends are in close contact with the pier body, the structural deformation generated when bearing load is smaller, the rigidity is larger, the structural sensitivity is low, and the generated stress, strain and eccentric load are less prone to exceeding the standard limit.
(4) The utility model adopts a supporting mode with symmetrical stress at two ends, can well maintain the stability of the structure and the pier body, greatly reduces the lateral bending moment and the tensile stress of the pier caused by asymmetric load, and improves the overall quality of the bridge.
(5) The utility model performs a plurality of details of filling and propping, closely contacts the structure with the pier body, has better load transmission effect, is beneficial to the transmission of pressure load by the pier, and is convenient for the installation and the dismantling before and after construction. The design of the shrinking steel plate is also more beneficial to the protection of the permanent structure.
(6) The utility model combines the section steel of different types and models in an embedded mode, designs a novel supporting structure of the embedded pier, enriches the types of the embedded supporting structure, provides a new thought for the suspended supporting structure, and has the advantages of simple installation, small material loss, good stability, small occupied area, small interference to adjacent construction and strong comprehensiveness.
Drawings
FIG. 1 is an overall layout of an pier stud embedment;
FIG. 2 is a side view of a pre-buried steel box and vertical stiffener;
FIG. 3 is a double-spliced I-steel connection diagram;
fig. 4 is a view of an inner pinch-off support pad steel plate.
Wherein: the embedded steel box 1, the I-shaped distribution beam 2, the stiffening plate 3, the inward shrinkage support pad steel plate 4, the pier column 5, the I-shaped girder 6 and the limiting block 7
Detailed Description
The following detailed description of the present utility model will provide clear and complete description of the technical solutions of embodiments of the present utility model, with reference to fig. 1-4, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a symmetrical balance support structure of an embedded pier through improvement, as shown in the figure; the supporting structure is provided with an embedded steel box 1, an I-shaped distribution beam 2, a stiffening plate 3 and an inward-shrinking support pad steel plate 4; the bottoms of cantilever ends at two sides of the I-shaped steel distribution beam 2 are tightly contacted with the side surfaces of the pier columns 5 by stiffening plates 3, and the I-shaped distribution beam 2 is welded with the stiffening plates 3; the I-shaped distribution beam 2 is arranged in and penetrates through the embedded steel box 1, and the vertical center line of the I-shaped distribution beam coincides with the axis of the pier column.
The embedded steel box 1 is of a cuboid steel box structure consisting of four thick steel plates, penetrates through the pier stud and is vertically and symmetrically placed on the central axis of the pier body.
The I-shaped distribution beam 2 is formed by welding I-steel with an additional stiffening plate, is internally arranged and penetrates through the inside of the embedded steel box, and the vertical center line of the I-shaped distribution beam is overlapped with the axis of the pier column.
The bottoms of cantilever ends at two sides of the I-steel distribution beam 2 are tightly contacted with the side surfaces of the pier column 5 by stiffening plates 3.
The inward shrinkage supporting pad steel plate 4 is a steel plate positioned between the bottom of the I-shaped distribution beam and the embedded steel box, and plays roles of supporting pad, preventing local overstress and protecting pier column concrete from extrusion damage.
The construction steps of the symmetrical balance support structure are as follows:
(1) And reasonably selecting the model of the section steel of each part, the welding line mode, the welding line width, the elevation of the pre-embedded position of the pier column and the like according to the supporting stress condition, and checking whether the stress of the pier column and the supporting structure meets the standard requirement.
(2) And (3) machining all parts of the structure according to the design requirement, and checking the quality of the section steel before machining to ensure that the machining is strictly carried out according to the design requirement.
(3) And installing an embedded steel box at the designed embedded elevation of the pier column by using hoisting equipment. In order to prevent the pier stud from generating eccentric load, the vertical axis of the embedded steel box needs to be coincident with the axis of the pier stud, the steel plate needs to be kept horizontal or vertical, and the concrete pier stud needs to be embedded into the end head of the steel plate vertically. The bottom needs to be leveled in advance before installation.
(4) And assembling and welding the support pad steel plate, the I-shaped distribution beam and the stiffening plate by using lifting equipment in sequence. The bottom of the I-shaped distribution beam needs to be leveled again before being installed, and the I-shaped distribution beam is symmetrically placed relative to the axis of the pier column. After the installation and adjustment of the I-shaped distribution beam are finished, the gap between the I-shaped distribution beam and the steel box is required to be filled tightly by steel bars, so that the I-shaped steel is ensured to be in a reliable and stable state, and the top filling depth is preferably larger than 20cm. In order to prevent the support cushion steel plate from damaging the pier column, the edge of the support cushion steel plate needs to be contracted by 10mm relative to the edge of the pier column; in order to enable the stiffening plate at the bottom of the cantilever end to smoothly transfer the load to the side surface of the pier column, the stiffening plate needs to be firmly abutted against the side surface of the pier column.
(5) Checking and accepting the supporting structure: checking whether the structure is constructed according to the design; checking whether the elevation of the embedded position meets the construction requirement; and checking whether levelness, verticality and welding seams meet requirements or not. And after the inspection is finished, the subsequent construction can be performed.
(6) The supporting force is loaded. The structure is a balanced supporting structure, and in order to ensure that the overall balance and safety of the structure and the bridge pier meet the standard requirements, the two sides of the I-shaped distribution beam are required to symmetrically bear the loads with the same size.
The advantage and beneficial effect of this patent are:
(1) The bridge pier is used as a basic carrier for supporting and transmitting the vertical load at the upper part, the carrier foundation is stable, the pressure-resistant structure and material characteristics of the concrete bridge pier are greatly exerted, the upper pressure-bearing limit is high, the clearance space is released, and the consumable is reduced.
(2) The contact surface between the utility model and the pier is the cross section of the pier and the side surface of the pier body, the contact surface is larger, and the local bearing range is large. The vertical pressure of the cantilever ends at two sides is changed into lateral pressure after being transmitted by the stiffening plate, and the lateral pressure can be mutually offset; the vertical pressure can be transmitted to the ground along the pier body, and the design stress mode of the pier column type structure is met.
(3) The utility model adopts high-model section steel with small length, the cantilevers at the middle part and the two ends are in close contact with the pier body, the structural deformation generated when bearing load is smaller, the rigidity is larger, the structural sensitivity is low, and the generated stress, strain and eccentric load are less prone to exceeding the standard limit.
(4) The utility model adopts a supporting mode with symmetrical stress at two ends, can well maintain the stability of the structure and the pier body, greatly reduces the lateral bending moment and the tensile stress of the pier caused by asymmetric load, and improves the overall quality of the bridge.
(5) The utility model performs a plurality of details of filling and propping, closely contacts the structure with the pier body, has better load transmission effect, is beneficial to the transmission of pressure load by the pier, and is convenient for the installation and the dismantling before and after construction. The design of the shrinking steel plate is also more beneficial to the protection of the permanent structure.
(6) The utility model combines the section steel of different types and models in an embedded mode, designs a novel supporting structure of the embedded pier, enriches the types of the embedded supporting structure, provides a new thought for the suspended supporting structure, and has the advantages of simple installation, small material loss, good stability, small occupied area, small interference to adjacent construction and strong comprehensiveness.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. A symmetrical balance support structure of an embedded pier is characterized in that; the supporting structure is provided with an embedded steel box, an I-shaped distribution beam, a stiffening plate and an inward-shrinking support pad steel plate; the bottoms of cantilever ends at two sides of the I-shaped steel distribution beam are tightly contacted with the side surfaces of the pier column by using stiffening plates, and the I-shaped distribution beam is welded with the stiffening plates; the I-shaped distribution beam is arranged in and penetrates through the embedded steel box, and the vertical center line of the I-shaped distribution beam coincides with the axis of the pier column.
2. The symmetrical balance support structure of a pre-buried pier according to claim 1, wherein; the embedded steel box is of a cuboid steel box structure consisting of four thick steel plates, penetrates through the pier stud and is vertically and symmetrically placed on the central axis of the pier body.
3. The symmetrical balance support structure of a pre-buried pier according to claim 1, wherein; the inward shrinkage support pad steel plate is a steel plate positioned between the bottom of the I-shaped distribution beam and the embedded steel box, and plays roles in supporting the pad, preventing local overstress and protecting pier column concrete from extrusion damage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321300268.8U CN219772687U (en) | 2023-05-26 | 2023-05-26 | Symmetrical balance supporting structure of embedded pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321300268.8U CN219772687U (en) | 2023-05-26 | 2023-05-26 | Symmetrical balance supporting structure of embedded pier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219772687U true CN219772687U (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321300268.8U Active CN219772687U (en) | 2023-05-26 | 2023-05-26 | Symmetrical balance supporting structure of embedded pier |
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| Country | Link |
|---|---|
| CN (1) | CN219772687U (en) |
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2023
- 2023-05-26 CN CN202321300268.8U patent/CN219772687U/en active Active
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