CN219505076U - Deformation coordination rotation system for I-beam pedestal by fold line pretensioning method - Google Patents
Deformation coordination rotation system for I-beam pedestal by fold line pretensioning method Download PDFInfo
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- CN219505076U CN219505076U CN202320275501.5U CN202320275501U CN219505076U CN 219505076 U CN219505076 U CN 219505076U CN 202320275501 U CN202320275501 U CN 202320275501U CN 219505076 U CN219505076 U CN 219505076U
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Abstract
The utility model provides a deformation coordination rotation system of an I-beam pedestal by a broken line pretensioning method, and belongs to the technical field of prestress tensioning of a prefabricated beam slab for bridge construction. The technical proposal is as follows: the beam forming device comprises a beam forming base, wherein a plurality of steel pipe piles are arranged at the lower part of the beam forming base, and stress beams are arranged at the upper part of the beam forming base; one side of the beam making base is provided with a tensioning pedestal, the tensioning pedestal comprises a pulling-resistant pile and a bearing pile which are formed by steel pipe piles, and the pulling-resistant pile and the bearing pile are provided with horizontal rods and vertical rods through a sliding system and a rotating system; an auxiliary rod parallel to the vertical rod is arranged above the beam making base, the auxiliary rod is connected with the vertical rod through a plurality of pull rods, the pull rods penetrate through the vertical rod and then are provided with a penetrating jack, and the stress beam is anchored on the auxiliary rod through a single-hole anchor. The beneficial effects of the utility model are as follows: the sliding system ensures that the design of the beam making pedestal has low requirements on foundation treatment; the tensioning pedestal rotating system and the sliding system are matched with each other, so that the influence of the base expansion creep on the tensioning end can be eliminated.
Description
Technical Field
The utility model relates to the technical field of prestress tensioning of a bridge construction precast beam slab, in particular to a deformation coordination rotation system of a broken line pretensioning I-beam pedestal.
Background
The pretensioned precast beam is developed rapidly in bridge construction, and has obvious advantages compared with the construction of the post-tensioned precast beam. The traditional pretensioning construction has relative limitations and also has certain defects; the stretching bench has certain destructiveness to the stretching bench structure due to the difference of stretching force transmission modes of the stretching bench.
The method for constructing the precast beam by the pretensioning method in the current construction is not more, and mainly comprises a tensioning pedestal which is relatively applicable to the pretensioned line tensioning and the broken line tensioning construction. The construction of the linear prestress pretensioned prefabricated hollow slab beam adopts a traditional gravity type pedestal. The gravity type pedestal has simple form and simple and clear stress direction, and the construction method is applied for many years and the process is relatively mature. In the whole pedestal tensioning process, tensioning force is transferred to the concrete at the lower part of the pedestal to form local eccentric pressure, and the stability of the whole tensioning pedestal is maintained relative to the soil pressure. The pretensioned gravity type pedestal construction is suitable for a good foundation section, geological conditions are key for determining the pedestal construction cost, in short, if the pile is positioned in a soft soil foundation section, the soil pressure approaches infinity because of severe geology, and even if the pedestal is constructed by using larger volume concrete, the pile cannot meet the beam field construction conditions. In the whole gravity type pedestal stress process, the eccentric load at the lower part of the pedestal has extremely high shearing property to the local part of the pedestal concrete, and the shearing resistance of the concrete structure is weak, so that shearing damage is easy to form under the action of a long time. When the tension is fixed, the tension pedestal can displace and roll under the action of long-time tension.
Therefore, in order to solve the problems that local eccentricity, displacement, side tilting and the like can occur in the design and use of the pretensioned construction precast beam tensioning pedestal, the deformation coordination rotation system of the broken line pretensioned I-beam pedestal is provided.
Disclosure of Invention
The utility model aims to provide a deformation coordination rotation system for a broken line pretensioning I-beam pedestal, which is simple to operate and effectively solves the problems of local eccentricity, large shearing damage and the like in the design and use of the original pretensioning construction precast beam pedestal.
The utility model is realized by the following measures:
the deformation coordination rotation system of the I-beam pedestal of the broken line pretensioning method is characterized by comprising a beam manufacturing base, wherein the lower part of the beam manufacturing base is provided with a plurality of steel pipe piles through a sliding system, and the upper part of the beam manufacturing base is provided with a stress beam;
the steel pipe pile pulling device comprises a beam making base, and is characterized in that a tensioning pedestal is arranged on one side of the beam making base and comprises a pulling-resistant pile and a bearing pile which are formed by the steel pipe piles, a horizontal rod is arranged on the pulling-resistant pile, a vertical rod is arranged on the bearing pile, and one end, far away from the pulling-resistant pile, of the horizontal rod is arranged on the vertical rod through a rotating system;
the beam making base top be provided with the parallel auxiliary rod of montant, auxiliary rod with the montant is connected through a plurality of pull rods that set up, the pull rod passes be provided with the punching jack behind the montant, the stress beam passes through the single hole ground tackle anchor on the auxiliary rod.
The utility model has the specific characteristics that:
the sliding system comprises a uplift pile sliding support, a bearing pile sliding support and a beam manufacturing base sliding support;
the anti-pulling pile sliding support comprises a steel plate cross support arranged in the upper end of the anti-pulling pile, a reserved hole is formed in the middle of the steel plate cross support, an H-shaped transverse distribution beam is arranged above the anti-pulling pile and used for transmitting and distributing tensile force born by the anchor, the lower part of the transverse distribution beam is connected with a horizontal rod through a sliding sheet, finish rolling straight thread steel bars are arranged on the transverse distribution beam in a penetrating mode, the anchor is used for anchoring the finish rolling straight thread steel bars, gaskets are arranged on the periphery of the finish rolling straight thread steel bars between the anchor and the transverse distribution beam and used for anchoring the finish rolling straight thread steel bars, local pressure on the lower part of the anchor is diffused, a pair of horizontal rods are arranged between the transverse distribution beam and the anti-pulling pile, and the anti-pulling pile sliding support is arranged on the upper part of the rear side of the horizontal rod and has two functions, so that on one hand, the anti-pulling pile can be connected with the horizontal rod; on the other hand can make the relative slip trend produces between the anti-floating pile with the horizon bar can eliminate completely the anti-floating pile receives the influence of horizontal shear force effect, finish rolling straight thread reinforcing bar lower extreme is provided with U type ground tackle after passing the preformed hole, U type ground tackle is used for the anchor finish rolling straight thread reinforcing bar, can make it have certain angular displacement simultaneously.
The anti-pulling pile is characterized in that a pair of arc-shaped sliding sheets A are arranged on the lower side face of the transverse distribution beam, a pair of arc-shaped sliding sheets B corresponding to the sliding sheets A are arranged at the upper end of the anti-pulling pile, horizontal rods are respectively arranged between the sliding sheets A and the sliding sheets B in a sliding mode, and the horizontal rods can slide relatively relative to the transverse distribution beam and the anti-pulling pile.
The bearing pile sliding support comprises a steel plate B arranged at the upper end of the bearing pile, wherein the steel plate B is used for filling concrete for sealing the bottom, filled concrete is arranged at the upper part of the steel plate B and used for local reinforcement of the bearing pile, the filled concrete is 50cm in height, a steel plate A is arranged at the upper part of the filled concrete and used for sealing the top of the filled concrete and used for supporting the bottom of a polytetrafluoroethylene sliding rubber support, the distance between the steel plate A and the top of the bearing pile is 3cm, a polytetrafluoroethylene sliding rubber support is arranged at the upper part of the steel plate A, the polytetrafluoroethylene sliding rubber support is provided with a vertical rod, the polytetrafluoroethylene sliding rubber support can enable the vertical rod and the bearing pile to slide relatively, a filling wood wedge block is arranged in a gap between the lower part of the polytetrafluoroethylene sliding rubber support and the bearing pile, and the filling wood wedge block can enable the polytetrafluoroethylene sliding rubber support to be always located at the center of the bearing pile;
the bearing pile sliding support is made of polytetrafluoroethylene sliding rubber, the lower portion of the support is embedded into the bearing pile during installation and located at the center of the section of the bearing pile, and the spare part of a gap between the periphery of the bearing pile and the bearing pile (steel pipe pile) is filled and fixed by wood wedge blocks. The device also has two functions, on one hand, the device is used for transmitting the vertical acting force of the vertical rod of the upper pedestal and transmitting the vertical force to the bearing pile for bearing; on the other hand, the relative sliding trend can be generated between the bearing pile and the vertical rod, and the influence of the horizontal shearing force on the bearing pile can be completely eliminated.
The beam making base sliding support comprises a plurality of hoops which are arranged on the periphery of the beam making base and correspond to the steel pipe piles, wherein each hoop comprises an upper U-shaped hoop plate and a lower U-shaped hoop plate, two sides of each hoop plate are respectively provided with an anchoring connecting plate, and the hoop plates on the same side are anchored through fastening bolts so as to connect the upper hoop plate and the lower hoop plate;
lanyards are arranged between the two sides of the anchoring connecting plate and the lower steel pipe pile and are used for connecting the anchor ear and the lower steel pipe pile, so that horizontal relative sliding can be generated between the anchor ear and the lower steel pipe pile;
the beam making base sliding support is arranged between the beam making base and the ground anchor (steel pipe pile), and mainly aims to solve the problem of horizontal relative displacement of the ground anchor caused by temperature deformation and compression deformation in the using and production process of the beam making base.
The rotating system comprises an arc-shaped steering flange plate and a spherical fixed support;
the end parts of a pair of horizontal rods far away from the sliding system are provided with arc steering flanges, the upper side and the lower side of each arc steering flange are respectively provided with a first connecting plate, one side of each vertical rod, which faces the sliding system, is provided with an arc steel box matched with each arc steering flange, the upper side and the lower side of each arc steel box are respectively provided with a second connecting plate matched with each first connecting plate, each first connecting plate and each second connecting plate are respectively provided with a plurality of mounting holes, nuts and bolts are connected through the mounting holes, and the specification model of each bolt is M24;
the arc steering flange plate is arranged between the horizontal rod and the vertical rod, and can be connected with the horizontal rod and the vertical rod on one hand so as to transfer horizontal axial force between the horizontal rod and the vertical rod; on the other hand, a certain amount of relative angular displacement can be generated between the vertical rod and the horizontal rod, and the influence of a large bending moment at the joint of the vertical rod and the horizontal rod can be eliminated. When the device is used, the relative angular displacement between the vertical rod and the vertical direction is reduced, the pre-deflection angular displacement (leftwards) can be set for the vertical rod, and thus, the relative angular position between the vertical rod and the horizontal rod can also be reduced;
the spherical fixed support is arranged at the joint of the vertical rod and the beam making base, and the support and the arc-shaped steering flange plate work together, so that the vertical rod can relatively rotate in a plane; when the vertical rod generates a rotation deflection angle, horizontal force can still be transmitted to the beam making base along the spherical fixed support, and the horizontal force transmission problem of the tensioning system is solved.
And a rubber backing plate is arranged on the periphery of the bolt between the first connecting plate and the second connecting plate.
I i elastic strips are arranged on the periphery of the bolt between the second connecting plate and the rubber backing plate and play a role in elastic expansion deformation together with the rubber backing plate;
a polytetrafluoroethylene rubber sliding sheet is arranged between the arc-shaped steering flange plate and the arc-shaped steel box, and the polytetrafluoroethylene rubber sliding sheet enables the arc-shaped steering flange plate and the arc-shaped steel box to mutually rotate;
the diameter of the mounting hole is larger than that of the bolt, so that the arc steering flange plate and the arc steel box can rotate mutually.
A plurality of pull ropes are arranged between one end of the horizontal rod, which is close to the uplift pile, and the vertical rod.
The construction method comprises the following steps:
s1, designing the size of a tensioning pedestal according to the field requirement, and driving piles at preset positions in advance according to a tensioning pedestal design drawing and a beam making pedestal layout drawing;
s2, carrying out factory prefabrication processing according to the tensioning pedestal design drawing, and carrying out assembly installation on site.
S3, installing a sliding system and a rotating system according to the design, and performing pre-deflection setting and test tensioning (tensioning through the center-penetrating jack) after the installation is completed.
S4, safely removing all parts of the device for recycling after construction is completed, and then reusing the device.
The beneficial effects of the utility model are as follows:
the utility model provides a deformation coordination rotation system of a broken line pretensioning method I-beam pedestal, which can effectively solve the problems of local eccentricity, large shearing damage and the like in the design and use of the original pretensioning method construction precast beam pedestal, and has the specific beneficial effects that: the tensioning pedestal rotating system and the sliding system are mutually matched, so that the influence of the base expansion creep on the tensioning end can be eliminated, the whole tensioning pedestal tensioning force is converted into the axial pressure of the base and the sliding block, the pedestal construction is simple, the construction period is shortened, and the material consumption is reduced.
In addition, all components and accessories that relate to in this patent all can recycle, and the effective economic benefits that improves of repetitious recycling component.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present utility model.
Fig. 2 is a schematic structural view of the relevant parts of the arc-shaped steering flange plate in the embodiment of the utility model.
Wherein, the reference numerals are as follows: 4. an arc-shaped steering flange plate; 5. a spherical fixed support; 25. i i spring strips; 26. a rubber backing plate; 27. a bolt; 28. an arc steel box; 29. a polytetrafluoroethylene rubber slip sheet; 30. a second connecting plate; 31. the first connecting plate is connected; 101. a vertical rod; 102. a pull rod; 103. an auxiliary rod; 104. stress beam; 105. pulling-resistant piles; 106. bearing pile; 107. a steel pipe pile; 108. a horizontal bar.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Referring to fig. 1-2, a deformation coordination rotation system of a broken line pretensioning I-beam pedestal comprises a beam making base 18, wherein a plurality of steel pipe piles 107 are arranged at the lower part of the beam making base 18 through a sliding system, and a stress beam 104 is arranged at the upper part of the beam making base 18;
a tensioning pedestal is arranged on one side of the beam making base 18, the tensioning pedestal comprises a pulling-resistant pile 105 and a bearing pile 106 which are formed by steel pipe piles 107, a horizontal rod 108 is arranged on the pulling-resistant pile 105, a vertical rod 101 is arranged on the bearing pile 106, and one end, far away from the pulling-resistant pile 105, of the horizontal rod 108 is arranged on the vertical rod 101 through a rotating system;
a secondary rod 103 parallel to the vertical rod 101 is arranged above the beam making base 18, the secondary rod 103 is connected with the vertical rod 101 through a plurality of arranged pull rods 102, a penetrating jack is arranged after the pull rods 102 penetrate through the vertical rod 101, and a stress beam 104 is anchored on the secondary rod 103 through a single-hole anchor.
The sliding system comprises a uplift pile sliding support, a bearing pile sliding support and a beam making base sliding support;
the anti-pulling pile sliding support comprises a steel plate cross support arranged in the upper end of the anti-pulling pile, a preformed hole is formed in the middle of the steel plate cross support, an H-shaped transverse distribution beam is arranged above the anti-pulling pile, the transverse distribution beam is used for transmitting the tensile force born by an anchor, the lower part of the transverse distribution beam is connected with a horizontal rod through a sliding sheet, a finish rolling straight thread steel bar is arranged through the transverse distribution beam, an anchor is arranged at the upper end of the finish rolling straight thread steel bar and used for anchoring the finish rolling straight thread steel bar, a gasket is arranged on the periphery of the finish rolling straight thread steel bar between the anchor and the transverse distribution beam and used for anchoring the finish rolling straight thread steel bar in cooperation with the anchor, a pair of horizontal rods are arranged between the transverse distribution beam and the anti-pulling pile, and the anti-pulling pile sliding support is arranged at the upper part of the anti-pulling pile at the rear side of the horizontal rod and has the functions of connecting the anti-pulling pile and the horizontal rod; on the other hand can make between anti-floating pile and the horizon bar produce the relative slip trend, can eliminate the anti-floating pile completely and receive the influence of horizontal shear force effect, be provided with U type ground tackle behind the preformed hole is passed to finish rolling straight screw bar lower extreme, U type ground tackle is used for anchoring finish rolling straight screw bar, can make it have certain angular displacement simultaneously.
The lower side of the transverse distribution beam is provided with a pair of arc-shaped sliding sheets A, the upper end of the uplift pile is provided with a pair of arc-shaped sliding sheets B corresponding to the sliding sheets A, horizontal rods are respectively arranged between the sliding sheets A and the sliding sheets B in a sliding manner, and the horizontal rods can slide relatively relative to the transverse distribution beam and the uplift pile.
The bearing pile sliding support comprises a steel plate B arranged at the upper end of the bearing pile, wherein the steel plate B is used for filling concrete for back sealing, filling concrete is arranged at the upper part of the steel plate B and used for local reinforcement of the bearing pile, the height of the filling concrete is 50cm, a steel plate A is arranged at the upper part of the filling concrete and used for top sealing of the filling concrete, and meanwhile, the steel plate A is also used for supporting the bottom of the polytetrafluoroethylene sliding rubber support, the distance between the steel plate A and the top of the bearing pile is 3cm, the upper part of the steel plate A is provided with the polytetrafluoroethylene sliding rubber support, a vertical rod is arranged on the polytetrafluoroethylene sliding rubber support, the polytetrafluoroethylene sliding rubber support can enable the vertical rod and the bearing pile to slide relatively, a filling wood wedge block is arranged in a gap between the lower part of the polytetrafluoroethylene sliding rubber support and the bearing pile, and the filling wood wedge block can enable the polytetrafluoroethylene sliding rubber support to be always positioned at the center of the bearing pile;
the bearing pile sliding support is a polytetrafluoroethylene sliding rubber support, the lower part of the support is embedded into the bearing pile during installation and is positioned at the center of the section of the bearing pile, and the periphery of the gap between the bearing pile and the bearing pile (steel pipe pile) is filled and fixed by adopting a wood wedge block. The device also has two functions, on one hand, the device is used for transmitting the vertical acting force of the vertical rod of the upper pedestal and transmitting the vertical force to the bearing pile for bearing; on the other hand, the relative sliding trend can be generated between the bearing pile and the vertical rod, and the influence of the horizontal shearing force on the bearing pile can be completely eliminated.
The girder-making base sliding support comprises a plurality of anchor clamps which are arranged on the periphery of the girder-making base and correspond to the steel pipe piles, wherein each anchor clamp comprises an upper anchor clamp plate and a lower anchor clamp plate which are U-shaped, two sides of each anchor clamp plate are respectively provided with an anchor connecting plate, and the anchor clamp plates on the same side are anchored through fastening bolts so as to connect the upper anchor clamp plate and the lower anchor clamp plate;
the lanyard is arranged between the two side anchoring connecting plates and the steel pipe pile below, and is used for connecting the anchor ear and the steel pipe pile below, so that horizontal relative sliding can be generated between the anchor connecting plates and the steel pipe pile below;
the device is characterized in that the beam making base sliding support is arranged between the beam making base and the ground anchor (steel pipe pile), and mainly aims to solve the problem of horizontal relative displacement of the ground anchor caused by temperature deformation and compression deformation in the use and production process of the beam making base.
The rotating system comprises an arc-shaped steering flange plate 4 and a spherical fixed support 5;
the ends of a pair of horizontal rods 108 far away from the sliding system are provided with arc-shaped steering flanges 4, the upper side and the lower side of each arc-shaped steering flange 4 are respectively provided with a first connecting plate 31, one side of each vertical rod 101 facing the sliding system is provided with an arc-shaped steel box 28 matched with each arc-shaped steering flange 4, the upper side and the lower side of each arc-shaped steel box 28 are respectively provided with a second connecting plate 30 matched with each first connecting plate 31, each first connecting plate 31 and each second connecting plate 30 are respectively provided with a plurality of mounting holes, nuts and bolts 27 are arranged to be connected through the mounting holes, and the specification model of each bolt 27 is M24;
the arc steering flange 4 is arranged between the horizontal rod 108 and the vertical rod 101, and can connect the horizontal rod 108 with the vertical rod 101 on one hand so as to transfer horizontal axial force between the two; on the other hand, a certain amount of relative angular displacement can be generated between the vertical rod 101 and the horizontal rod 108, and the influence of a large bending moment at the joint of the vertical rod 101 and the horizontal rod can be eliminated. In use, in order to reduce the relative angular displacement between the vertical rod 101 and the vertical direction, a pre-deflection angular displacement (leftwards) can be set for the vertical rod 101, so that the relative angular position between the vertical rod 101 and the horizontal rod 108 can be reduced;
the spherical fixed support 5 is arranged at the joint of the vertical rod 101 and the beam making base 18, and the support works together with the arc-shaped steering flange 4, so that the vertical rod 101 can relatively rotate in a plane; when the vertical rod 101 generates a rotation deflection angle, horizontal force can still be transmitted to the beam making base 18 along the spherical fixed support 5, so that the horizontal force transmission problem of the tensioning system is solved.
A rubber backing plate 26 is arranged on the periphery of the bolt 27 between the first connecting plate 31 and the second connecting plate 30.
I i elastic strips 25 are arranged on the periphery of the bolts between the second connecting plate 30 and the rubber backing plate 26, and play a role in elastic expansion deformation together with the rubber backing plate 26;
a polytetrafluoroethylene rubber sliding sheet 29 is arranged between the arc-shaped steering flange 4 and the arc-shaped steel box 28, and the polytetrafluoroethylene rubber sliding sheet 29 enables the arc-shaped steering flange 4 and the arc-shaped steel box 28 to mutually rotate;
the diameter of the mounting hole is larger than the diameter of the bolt 27, which further enables the arc-shaped steering flange 4 and the arc-shaped steel box 28 to rotate relative to each other.
A plurality of pull ropes are arranged between one end of the horizontal rod 108 close to the uplift pile 105 and the vertical rod 101.
The construction method comprises the following steps:
s1, designing the size of a tensioning pedestal according to field requirements, and driving piles at preset positions in advance according to a tensioning pedestal design drawing and a field beam manufacturing pedestal layout drawing;
s2, carrying out factory prefabrication processing according to the tensioning pedestal design drawing, and carrying out assembly installation on site.
S3, installing a sliding system and a rotating system according to the design, and performing pre-deflection setting and test tensioning (tensioning through a penetrating jack) after the installation is completed.
S4, safely removing all parts of the device for recycling after construction is completed, and then reusing the device.
The technical features of the present utility model that are not described in the present utility model may be implemented by or using the prior art, and are not described in detail herein, but the above description is not intended to limit the present utility model, and the present utility model is not limited to the above examples, but is also intended to be within the scope of the present utility model by those skilled in the art.
Claims (5)
1. The deformation coordination rotation system of the I-beam pedestal of the broken line pretensioning method is characterized by comprising a beam manufacturing base (18), wherein a plurality of steel pipe piles (107) are arranged at the lower part of the beam manufacturing base (18) through a sliding system, and stress beams (104) are arranged at the upper part of the beam manufacturing base (18);
a tensioning pedestal is arranged on one side of the beam making base (18), the tensioning pedestal comprises a pulling-resistant pile (105) and a bearing pile (106) which are formed by the steel pipe piles (107), a horizontal rod (108) is arranged on the pulling-resistant pile (105), a vertical rod (101) is arranged on the bearing pile (106), and one end, far away from the pulling-resistant pile (105), of the horizontal rod (108) is arranged on the vertical rod (101) through a rotating system;
the beam making base (18) top be provided with auxiliary rod (103) of montant (101) parallel, auxiliary rod (103) with montant (101) are connected through a plurality of pull rods (102) that set up, pull rod (102) are provided with the punching jack after passing montant (101), stress beam (104) are through single hole ground tackle anchor on auxiliary rod (103).
2. The system for coordinated rotation of deformation of a polyline pretensioning i-beam abutment according to claim 1, characterized in that it comprises an arc-shaped steering flange (4) and a spherical fixed support (5);
keep away from a pair of horizontal pole (108) tip of slide system is provided with arc steering flange (4), the upper and lower both sides of arc steering flange (4) all are provided with connecting plate one (31), the orientation of montant (101) one side of slide system be provided with arc steering flange (4) complex arc steel case (28), the upper and lower both sides of arc steel case (28) all be provided with connecting plate one (31) complex connecting plate two (30), connecting plate one (31) with all be provided with a plurality of mounting holes on connecting plate two (30), pass the mounting hole is provided with nut and bolt (27) and connects.
3. The system for coordinated rotation of deformation of a line pretensioning i-beam abutment according to claim 2, wherein a rubber backing plate (26) is provided on the periphery of said bolt (27) between said first connection plate (31) and said second connection plate (30).
4. The system for coordinated rotation of deformation of a broken line pretensioning i-beam abutment according to claim 3, characterized in that said bolt periphery between said second web (30) and said rubber backing plate (26) is provided with a ii-type spring strip (25);
a polytetrafluoroethylene rubber sliding sheet (29) is arranged between the arc steering flange plate (4) and the arc steel box (28);
the diameter of the mounting hole is larger than the diameter of the bolt (27).
5. The system according to claim 1, wherein a plurality of pull rope connections are provided between one end of the horizontal bar (108) adjacent to the uplift pile (105) and the vertical bar (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320275501.5U CN219505076U (en) | 2023-02-20 | 2023-02-20 | Deformation coordination rotation system for I-beam pedestal by fold line pretensioning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320275501.5U CN219505076U (en) | 2023-02-20 | 2023-02-20 | Deformation coordination rotation system for I-beam pedestal by fold line pretensioning method |
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| CN219505076U true CN219505076U (en) | 2023-08-11 |
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| CN202320275501.5U Active CN219505076U (en) | 2023-02-20 | 2023-02-20 | Deformation coordination rotation system for I-beam pedestal by fold line pretensioning method |
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| CN (1) | CN219505076U (en) |
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2023
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