Bridge double-Y special-shaped pier body supporting device and construction method thereof

Abstract

The invention relates to a bridge double-Y special-shaped pier body supporting device and a construction method thereof.The bridge double-Y special-shaped pier body supporting device comprises a threaded steel pull rod, a first wedge-shaped cushion block, a transverse back ridge and a disc buckle supporting frame, and the disc buckle supporting frame is supported below a formwork support of a double-Y special-shaped pier body; the deformed steel bar pull rod transversely penetrates through two outer side face formworks of the formwork support, a plurality of first wedge-shaped cushion blocks are arranged on the outer side face formworks, the inclined faces of the first wedge-shaped cushion blocks abut against the two outer side face formworks of the formwork support respectively, and the side faces, away from the outer side face formworks, of the first wedge-shaped cushion blocks are locking faces. Transverse back ridges are arranged on the locking face of the first wedge-shaped cushion block, the two ends of the deformed steel bar pull rod penetrate through the two corresponding transverse back ridges respectively, and locking nuts which abut against the transverse back ridges are arranged at the two ends of the deformed steel bar pull rod respectively. Through in-vitro and in-vivo supporting of the double-Y special-shaped pier, the supporting structure achieves the purposes of high efficiency, safety, high quality and convenient construction.

Description

Technical Field

[0001] The present invention relates to the technical field related to bridge construction, and in particular to a double-Y special-shaped pier support device for a bridge and a construction method thereof. Background Art

[0002] With the acceleration of urbanization and the continuous growth of traffic demand, bridge engineering, as an important part of the urban transportation system, is also constantly innovating and developing its design and construction technology. As a novel and creative bridge structure, the double Y-shaped pier has been widely used in municipal highway bridge projects due to its unique shape and good force-bearing performance. Due to its high strength and corrosion resistance, the fine-rolled rebar can withstand various complex stresses and environmental conditions, ensuring the stability and safety of the supporting structure, and has been increasingly used in the construction support system of urban bridge special piers. However, traditional standard section piers can no longer meet the construction requirements of urban bridges. In order to ensure that the structural safety and linear control of bridge special piers meet the design requirements during the construction, it is necessary to conduct in-depth and systematic research on the construction support system technology of bridge special piers. Summary of the invention

[0003] In order to solve one or more technical problems existing in the prior art, the present invention provides a double-Y special-shaped pier support device for a bridge and a construction method thereof.

[0004] The technical solution of the present invention for solving the above-mentioned technical problems is as follows: A double Y-shaped special-shaped pier body support device for a bridge, comprising a threaded steel tie rod, a first wedge-shaped pad, a transverse back rib and a disc-shaped support frame, wherein the disc-shaped support frame is supported under the formwork support of the double Y-shaped special-shaped pier body; the threaded steel tie rod passes horizontally through the two outer side formworks of the formwork support, and the outer side formworks are provided with a plurality of first wedge-shaped pads, and the inclined surfaces of the first wedge-shaped pads are respectively abutted against the two outer side formworks of the formwork support, and the side surface of the first wedge-shaped pad facing away from the outer side formworks is a locking surface, and a transverse back rib is provided on the locking surface of the first wedge-shaped pad, and the two ends of the threaded steel tie rod respectively pass through the corresponding two transverse back ribs, and the two ends of the threaded steel tie rod are respectively provided with locking nuts for tightening the transverse back ribs.

[0005] The beneficial effects of the present invention are as follows: the bridge double Y-shaped pier body support device of the present invention achieves the purpose of efficient, safe, high-quality and convenient construction through the external and internal support of the double Y-shaped pier. The support device of the present invention is divided into internal fine-rolled threaded steel tension support + external socket-type buckle bracket support, which can not only avoid the problem of template dislocation caused by excessive local stress during the pouring of concrete for the double Y-shaped pier body, but also can well control the linearity of the pier body, making the construction more convenient and safer.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the outer side template is provided with multiple rows of first wedge-shaped pads along the up and down direction, each row of first wedge-shaped pads includes multiple first wedge-shaped pads arranged in sequence and spaced apart along the front and rear direction, and a group of transverse back ribs are provided on the locking surface of each row of first wedge-shaped pads.

[0008] Furthermore, the end of the threaded steel tie rod passes through a group of transverse back ribs between two adjacent first wedge-shaped pads in each row of first wedge-shaped pads.

[0009] Furthermore, each set of transverse back ribs is penetrated by at least two threaded steel tie rods.

[0010] Furthermore, the two outer side surface templates of the double Y-shaped pier body are provided with a plurality of vertically inclined limiting back ribs, and each limiting back rib is provided with at least two first wedge-shaped pads.

[0011] Furthermore, a jack for increasing the pre-tightening force is provided between the transverse back rib and the locking nut; and a plastic corrugated pipe for passing the threaded steel rod is pre-embedded in the formwork support of the double Y-shaped pier body.

[0012] Furthermore, the first wedge-shaped pad includes a locking plate and a tic-tac-toe block, the tic-tac-toe block is welded by multiple metal plates, one end of the tic-tac-toe block is welded to one side of the locking plate, and the other end of the tic-tac-toe block is tilted to serve as the inclined surface of the first wedge-shaped pad, and the other side surface of the locking plate serves as the locking surface of the first wedge-shaped pad.

[0013] Furthermore, the buckle support frame includes a first buckle frame, a second buckle frame and a third buckle frame. The first buckle frame and the second buckle frame are respectively supported on two outer side surface templates of the double Y-shaped pier body, and the third buckle frame is supported under the template at the intersection of the two Y-shaped structures of the double Y-shaped pier body.

[0014] Furthermore, the first buckle frame, the second buckle frame and the third buckle frame all include vertical support rods, the upper ends of the vertical support rods are provided with U-shaped brackets, and the U-shaped brackets are provided with second wedge-shaped pads, and the inclined surface of the second wedge-shaped pads is supported on the outer side surface formwork of the double Y-shaped pier body and the intersection formwork below the intersection of the two Y-shaped structures.

[0015] A construction method for the above-mentioned double-Y special-shaped pier body support device of the bridge includes the following steps: pouring a cushion layer after the site is leveled, setting up a buckle support frame on the cushion layer, using the buckle support frame to set up the junction template of the two Y-shaped structures of the double-Y special-shaped pier body, the outer side template and the inner side template, and tying steel bars; pre-embedding a plastic corrugated pipe on the template and steel bars of the double-Y special-shaped pier body, inserting a threaded steel tie rod into the plastic corrugated pipe, making the two ends of the threaded steel tie rod pass through the outer side template of the double-Y special-shaped pier body respectively, and setting a first wedge-shaped pad and a transverse back rib, and then tightening and fixing it by a locking nut.

[0016] The beneficial effects of the present invention are as follows: the construction method of the present invention is fixed on the formwork frame of the double Y-shaped pier column through a fastening system, and uses fine-rolled threaded steel (threaded steel tie rods), I-beam back ribs, wedge-shaped pads, gaskets, and nuts to form a pull on both sides of the pier column, thereby ensuring the construction safety of the structure, effectively improving work efficiency, and achieving the effects of convenient construction, simple disassembly, and reduced material and labor waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the double Y-shaped pier support device of the bridge of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0019] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB;

[0020] Figure 4 This is a schematic diagram of the main structure of the threaded steel tie rod of the present invention in use;

[0021] Figure 5 It is a side view structural schematic diagram of the threaded steel tie rod of the present invention in use state;

[0022] Figure 6 It is a schematic diagram of the connection structure of the threaded steel tie rod of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the vertical support rod of the present invention in use state;

[0024] Figure 8 It is a schematic diagram of the main structure of the first wedge-shaped pad of the present invention;

[0025] Fig. 9 It is a schematic diagram of the top structure of the first wedge-shaped pad of the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Threaded steel tie rod; 2. First wedge-shaped pad; 21. Locking plate; 22. T-shaped block; 3. Horizontal back rib;

[0028] 4. Plate buckle support frame; 41. First plate buckle frame; 42. Second plate buckle frame; 43. Third plate buckle frame; 44. Vertical support rod; 45. U-shaped support; 46. Second wedge-shaped pad; 47. Railing;

[0029] 5. Formwork support; 51. External side formwork; 52. Joint formwork; 6. Locking nut; 61. Gasket; 7. Limiting back rib; 8. Jack. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] like Figures 1 to 9 As shown, a bridge double Y-shaped pier body supporting device of this embodiment includes a threaded steel tie rod 1, a first wedge-shaped pad 2, a transverse back rib 3 and a buckle support frame 4, wherein the buckle support frame 4 is supported below the formwork support 5 of the double Y-shaped pier body, that is, supported below the template 52 at the intersection of the two Y-shaped structures and below the two outer side templates 51 of the double Y-shaped pier body; the threaded steel tie rod 1 transversely passes through the two outer side templates 51 of the double Y-shaped pier body, and the outer side templates 51 are provided with a plurality of first wedge-shaped pads 2, the inclined surfaces of the first wedge-shaped pads 2 respectively abut against the corresponding outer side templates 51 of the double Y-shaped pier body, the side of the first wedge-shaped pad 2 facing away from the outer side template 51 is a locking surface, and the locking surface of the first wedge-shaped pad 2 is provided with a transverse back rib 3, the two ends of the threaded steel tie rod 1 respectively pass through the corresponding two transverse back ribs 3, and the two ends of the threaded steel tie rod 1 are respectively provided with locking nuts 6 for tightening the transverse back ribs 3.

[0032] Specifically, in order to facilitate the construction operation, a railing 47 can also be provided on the top peripheral side of the buckle support frame 4.

[0033] like Figure 1 , Figure 4 and Figure 5 As shown, the outer side surface template 51 of this embodiment is provided with multiple rows of first wedge-shaped pads 2 along the up and down directions, each row of first wedge-shaped pads 2 includes multiple first wedge-shaped pads 2 arranged in sequence along the front and back directions, and a group of transverse back ribs 3 are provided on the locking surface of each row of first wedge-shaped pads 2.

[0034] like Figure 5 As shown, the end of the threaded steel tie rod 1 of this embodiment passes through a group of transverse back ribs 3 between two adjacent first wedge-shaped pads 2 in each row of first wedge-shaped pads 2.

[0035] like Figure 5 As shown, each group of transverse back ribs 3 of this embodiment is penetrated by at least two threaded steel tie rods 1.

[0036] like Figure 5 As shown, the two outer side surface templates 51 of the double Y-shaped pier body of this embodiment are provided with a plurality of vertically inclined limiting back ribs 7, and each limiting back rib 7 is provided with at least two first wedge-shaped pads 2.

[0037] like Figure 6 As shown, a jack 8 for increasing the pre-tightening force is also provided between the transverse back rib 3 and the locking nut 6 of this embodiment, and a gasket 61 is additionally provided between the locking nut 6 and the jack 8; a plastic corrugated pipe for the threaded steel tie rod 1 to be passed through is pre-embedded in the formwork support 5 of the double Y-shaped pier body. In this embodiment, before everything is ready and the concrete is poured, the fine-rolled threaded steel inside and outside the body is tightened by applying a 10% pre-tightening force in advance by the jack. I-beam connecting beams, I-beam limiting back ribs and the first wedge block are arranged on the side formworks of the oblique outer sides of both sides of the main pier to ensure that the fine-rolled threaded steel is in full contact with the gasket and the jack and provides sufficient strength and rigidity, and will be removed after the concrete pouring of the double Y-shaped pier is completed and reaches the design strength.

[0038] like Figure 6 , Figure 8 and Fig. 9 As shown, the first wedge-shaped pad 2 of the present embodiment includes a locking plate 21 and a tic-tac-toe block 22. The tic-tac-toe block 22 is welded by multiple metal plates. One end of the tic-tac-toe block 22 is welded to one side of the locking plate 21, and the other end of the tic-tac-toe block 22 is tilted to serve as the inclined surface of the first wedge-shaped pad 2. The other side surface of the locking plate 21 serves as the locking surface of the first wedge-shaped pad 2.

[0039] like Figure 1 to Figure 3 As shown, the buckle support frame 4 of this embodiment includes a first buckle frame 41, a second buckle frame 42 and a third buckle frame 43, wherein the first buckle frame 41 and the second buckle frame 42 are respectively supported on two outer side surface formworks 51 of the double Y-shaped pier body, and the third buckle frame 43 is supported below the formwork 52 at the intersection of the two Y-shaped structures of the double Y-shaped pier body.

[0040] like Figure 1 to Figure 3 , Figure 7 As shown, the first buckle frame 41, the second buckle frame 42 and the third buckle frame 43 of this embodiment all include a vertical support rod 44, and the upper end of the vertical support rod 44 is provided with a U-shaped bracket 45, and the U-shaped bracket 45 is provided with a second wedge-shaped pad 46, and the inclined surface of the second wedge-shaped pad 46 is supported on the outer side template 51 of the double Y-shaped special-shaped pier body and the intersection template 52 below the intersection of the two Y-shaped structures. Among them, the structure of the second wedge-shaped pad 46 is the same as that of the first wedge-shaped pad 2.

[0041] The transverse back ribs 3 and the limiting back ribs 7 of this embodiment are both made of I-beams.

[0042] The bridge double Y-shaped pier body support device of this embodiment achieves the purpose of efficient, safe, high-quality and convenient construction through the external and internal support of the double Y-shaped pier. The support device of this embodiment is divided into internal fine-rolled threaded steel tension support + external socket-type buckle bracket support, which can not only avoid the problem of template dislocation caused by excessive local stress during the pouring of concrete for the double Y-shaped pier body, but also can well control the linearity of the pier body, making construction more convenient and safer.

[0043] The present embodiment also provides a construction method for the above-mentioned double Y-shaped special-shaped pier body support device of the bridge, comprising the following steps: pouring a cushion layer after leveling the site, setting up a buckle support frame 4 on the cushion layer, setting up the junction template 52, the outer side template 51 and the inner side template of the two Y-shaped structures of the double Y-shaped pier body by relying on the buckle support frame 4, and tying the steel bars; pre-embedding a plastic corrugated pipe on the template and steel bars of the double Y-shaped pier body, inserting a threaded steel tie rod 1 into the plastic corrugated pipe, making the two ends of the threaded steel tie rod 1 pass through the outer side template 51 of the double Y-shaped pier body respectively, and setting a first wedge-shaped pad 2 and a transverse back rib 3, and then tightening and fixing them by a locking nut 6.

[0044] The construction method of this embodiment is fixed on the formwork frame of the double Y-shaped pier through a fastening system, and uses high-quality rolled threaded steel (threaded steel tie rods), I-beam back ribs, wedge-shaped pads, gaskets, and nuts to form tension on both sides of the pier, thereby ensuring the construction safety of the structure, effectively improving work efficiency, and achieving the effects of convenient construction, simple disassembly, and reduced waste of materials and labor.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A double Y-shaped bridge pier support device, characterized in that: It includes a threaded steel tie rod, a first wedge-shaped pad, a transverse back rib and a buckle support frame, the buckle support frame is supported under the formwork support of the double Y-shaped pier body; the threaded steel tie rod passes horizontally through the two outer side formworks of the formwork support, and a plurality of first wedge-shaped pads are provided on the outer side formworks, the inclined surfaces of the first wedge-shaped pads respectively abut against the two outer side formworks of the formwork support, the side of the first wedge-shaped pad away from the outer side formworks is a locking surface, and a transverse back rib is provided on the locking surface of the first wedge-shaped pad, the two ends of the threaded steel tie rod respectively pass through the corresponding two transverse back ribs, and the two ends of the threaded steel tie rod are respectively provided with locking nuts for tightening the transverse back ribs.

2. According to claim 1, a double Y-shaped bridge pier support device is characterized in that: The outer side template is provided with multiple rows of first wedge-shaped pads along the up and down direction, each row of first wedge-shaped pads includes multiple first wedge-shaped pads arranged in sequence and spaced apart along the front and rear direction, and a group of transverse back ribs are provided on the locking surface of each row of first wedge-shaped pads.

3. According to claim 2, a double Y-shaped bridge pier support device is characterized in that: The end of the threaded steel tie rod passes through a group of transverse back ribs between two adjacent first wedge-shaped pads in each row of first wedge-shaped pads.

4. According to claim 2, a double Y-shaped bridge pier support device is characterized in that: At least two threaded steel tie rods are passed through each set of transverse back ribs.

5. According to claim 1, a double Y-shaped bridge pier support device is characterized in that: The two outer side surface templates of the double Y-shaped pier body are both provided with a plurality of vertically inclined limiting back ribs, and each limiting back rib is provided with at least two first wedge-shaped pads.

6. A double Y-shaped bridge pier support device according to claim 1, characterized in that: A jack for increasing the pre-tightening force is also provided between the transverse back rib and the locking nut; a plastic corrugated pipe for threaded steel tie rods to be passed through is pre-embedded in the formwork support of the double Y-shaped pier body.

7. A double Y-shaped bridge pier support device according to claim 1, characterized in that: The first wedge-shaped pad includes a locking plate and a tic-tac-toe block. The tic-tac-toe block is welded by multiple metal plates. One end of the tic-tac-toe block is welded to one side of the locking plate, and the other end of the tic-tac-toe block is arranged at an angle to serve as the inclined surface of the first wedge-shaped pad. The other side surface of the locking plate serves as the locking surface of the first wedge-shaped pad.

8. The double Y-shaped bridge pier support device according to claim 1, characterized in that: The buckle support frame includes a first buckle frame, a second buckle frame and a third buckle frame. The first buckle frame and the second buckle frame are respectively supported on the two outer side templates of the double Y-shaped pier body, and the third buckle frame is supported under the template at the intersection of the two Y-shaped structures of the double Y-shaped pier body.

9. A double Y-shaped bridge pier support device according to claim 8, characterized in that: The first, second and third disc-locking frames all include vertical support rods, each of which has a U-shaped bracket at its upper end, a second wedge-shaped pad inside the U-shaped bracket, and an inclined surface of the second wedge-shaped pad supported on the outer side surface formwork of the double Y-shaped pier body and the intersection formwork below the intersection of the two Y-shaped structures.

10. A construction method for the double-Y special-shaped bridge pier support device according to any one of claims 1 to 9, characterized in that: The following steps are involved: After the site is leveled, the cushion layer is poured, and a buckle support frame is set up on the cushion layer. The junction formwork, outer side formwork and inner side formwork of the two Y-shaped structures of the double Y special-shaped pier body are set up by relying on the buckle support frame, and the steel bars are tied; plastic corrugated pipes are embedded in the formwork and steel bars of the double Y special-shaped pier body, and threaded steel rods are inserted into the plastic corrugated pipes. The two ends of the threaded steel rods are respectively passed through the outer side formwork of the double Y special-shaped pier body, and the first wedge-shaped pad and transverse back ribs are set, and then tightened and fixed by locking nuts.

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