An end formwork suitable for small-radius T-beams

Abstract

An end form plate suitable for small radius T beam is composed of a lower fixed form plate, an upper horizontal angle adjustment form plate, an upper transverse slope angle adjustment form plate, an upper width adjustment form plate and a side fixed form plate; the whole end form plate is located inside the envelope of the bottom form plate, the side form plate, the wing form plate and the side form plate; the lower fixed form plate is provided with a tensioning anchor hole and is vertically fixed with the bottom form plate and the side form plate to meet the tensioning requirement; the upper horizontal angle adjustment form plate can be rotated with the lower fixed form plate; the upper transverse slope angle adjustment form plate is bolted with the upper horizontal angle adjustment form plate through an arc-shaped notch to adjust the upper transverse slope angle of the end form plate; the upper width adjustment form plate is bolted with the upper transverse slope angle adjustment form plate through a rectangular notch; the upper width adjustment form plate and the side fixed form plate are hinged; and the side fixed form plate is bolted with the side form plate through a rectangular notch to compensate the length change caused by the rotation of the end form plate; the technology solves multiple adjustment requirements of the end form plate of the small radius T beam.

Description

Technical Field

[0001] This invention relates to the field of formwork technology for bridge construction, and more specifically to an end formwork adapted to small-radius T-beams. Technical Background

[0002] Small-radius curves on highway ramp bridges are generally constructed using small-span continuous beams or steel beams. However, for special structures crossing rivers or roads, and considering factors such as cost and construction period, large-span, small-radius precast concrete simply supported beam structures are designed and erected. The conventional approach for the ends of precast T-beams is to align them with the beam's axis, with a rectangular top slab and a fixed-size end formwork. However, the rectangular beam structure on small curves causes interference between the flanges of the preceding and following spans, preventing complete beam placement and resulting in sawtooth-shaped joints that negatively impact aesthetics, bridge deck construction, and load-bearing capacity. Small curves are accompanied by large cross slopes, with constantly changing flange cross slopes, making fixed-size end formwork unsuitable. To address this issue, an end formwork adapted for small-radius T-beams is proposed. Summary of the Invention

[0003] To address this issue, an end formwork adapted for small-radius T-beams is proposed. The end formwork is separated from the hinged joint between the wing formwork and the side formwork, and the upper part is rotated horizontally to make the beam end face trapezoidal. The end formwork is designed as a modular assembly structure, allowing for adjustment according to the cross slope. The technical solution is:

[0004] An end formwork adapted to small-radius T-beams includes a lower fixed formwork, an upper horizontal angle adjustment formwork, an upper cross slope angle adjustment formwork, an upper width adjustment formwork, and an edge fixed formwork.

[0005] Preferably, the end mold is located entirely within the envelope of the bottom mold, side mold, wing mold, and edge mold.

[0006] Preferably, the lower fixed template is provided with tensioning anchor holes, and the panel of the lower fixed template is vertically fixed to the panels of the bottom mold and the side mold.

[0007] Preferably, the upper positioning hole of the upper horizontal angle adjustment template and the lower positioning hole of the lower fixed template are connected by a horizontal angle adjustment positioning bolt, which can realize the horizontal angle rotation of the upper horizontal angle adjustment template.

[0008] Preferably, the upper transverse slope angle adjustment template and the upper horizontal angle adjustment template are connected and fixed by nuts to the horizontal angle adjustment template fixing studs through arc-shaped slots, so that the upper part of the end mold can be adjusted with the transverse slope angle of the wing mold.

[0009] Preferably, the upper width adjustment template and the side fixing template are hinged, with a pivot in the middle of the hinge; the upper width adjustment template and the upper cross slope angle adjustment template are fixed to the width adjustment template fixing studs by nuts through straight slots; the side fixing template and the side mold are fixed to each other by side fixing template positioning bolts through rectangular slots. The above movable connections can compensate for the length change caused by the rotation of the upper part of the end mold.

[0010] Beneficial effects

[0011] The T-beam end formwork is located entirely within the envelope of the bottom formwork, side formwork, wing formwork, and edge formwork, and is assembled in sections, allowing for flexible adjustment on small curve sections and making it highly adaptable.

[0012] The end mold is divided into upper and lower sections. The lower fixed template is perpendicular to the side mold and bottom mold to meet the tensioning requirements, while the upper movable template is connected by slots to meet the angle changes and posture adjustments of top rotation, cross slope, etc.

[0013] The upper width adjustment template and the edge fixing template are hinged, and the upper cross slope angle adjustment template is connected by a slot, which can compensate for the change in the length of the top of the end mold caused by the rotation of the upper part of the end mold. Attached Figure Description

[0014] Figure 1 Front view of the end model

[0015] Figure 2 Front view after end mold installation

[0016] Figure 3 Top view after end mold installation

[0017] Among them: 1. Bottom mold; 2. Side mold; 3. Wing mold; 4. End mold; 4-1. Lower fixed template; 4-11. Tensioning anchor hole; 4-12. Lower positioning hole; 4-2. Upper horizontal angle adjustment template; 4-21. Upper positioning hole; 4-22. Horizontal angle adjustment template fixing stud; 4-3. Upper cross slope angle adjustment template; 4-31. Arc-shaped groove; 4-32. Straight groove; 4-4. Upper width adjustment template; 4-41. Width adjustment template fixing stud; 4-5. Side fixed template; 4-51. Straight groove; 4-6. Rotating shaft; 4-7. Horizontal angle adjustment positioning bolt; 4-8. Side fixed template positioning bolt; 5. Side mold. Specific Implementation

[0018] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0019] Taking an end formwork adapted to a small-radius T-beam as an example, the specific implementation of this end formwork is illustrated: An end formwork adapted to a small-radius T-beam consists of a lower fixed formwork 4-1, an upper horizontal angle adjustment formwork 4-2, an upper cross slope angle adjustment formwork 4-3, an upper width adjustment formwork 4-4, and an edge fixed formwork 4-5. (See...) Figure 1 .

[0020] The end mold 4 is entirely contained within the envelope of the bottom mold 1, side mold 2, wing mold 3, and edge mold 5. (See...) Figure 2 .

[0021] The lower fixed template 4-1 is provided with multiple tension anchor holes 4-11. The lower fixed template 4-1 is connected to the upper horizontal angle adjusting template 4-2 by horizontal angle adjusting positioning bolts 4-7, which can rotate horizontally (see...). Figure 3 The mating surfaces of the lower fixed template 4-1 and the upper horizontal angle adjusting template 4-2 are on the same horizontal plane as the hinge positions of the side mold 2 and the wing mold 3 (see...). Figure 2 ).

[0022] The upper transverse slope angle adjustment template 4-3 has two arc-shaped slots 4-31; the upper horizontal angle adjustment template 4-2 is welded with a horizontal angle adjustment template fixing stud 4-22; the upper transverse slope angle adjustment template 4-3 and the upper horizontal angle adjustment template 4-2 are connected and fixed by nuts through the slots 4-31 and the horizontal angle adjustment template fixing stud 4-22; the upper transverse slope angle adjustment template 4-3 can move appropriately within the slots; the lower edge of the upper transverse slope angle adjustment template 4-3 is attached to the wing mold 3; thus, the upper part of the end mold adjusts with the transverse slope angle of the wing mold 3 (see...). Figure 2 ).

[0023] The panel of the lower fixed template 4-1 is vertically fixed to the panels of the bottom mold 1 and the side mold 2; the upper horizontal angle adjustment template 4-2, the upper cross slope angle adjustment template 4-3, the upper width adjustment template 4-4, and the side fixed template 4-5 can rotate horizontally and adjust with the cross slope. The upper width adjustment template 4-4 and the side fixed template 4-5 are hinged, with a pivot 4-6 in the middle of the hinge; the upper width adjustment template 4-4 and the upper cross slope angle adjustment template 4-3 are connected to the width adjustment template fixing stud 4-41 through a straight slot 4-32 using nuts; the side fixed template 4-5 and the side mold 5 are connected through a rectangular slot 4-51 using side fixed template positioning bolts 4-8. These movable connections can compensate for the length change caused by the rotation of the upper part of the end mold 4 (see...). Figure 3 ).

Claims

1. An end formwork adapted to small-radius T-beams, characterized in that: The end mold consists of a lower fixed template (4-1), an upper horizontal angle adjustment template (4-2), an upper cross slope angle adjustment template (4-3), an upper width adjustment template (4-4), and an edge fixed template (4-5).

2. The end formwork for a small-radius T-beam according to claim 1, characterized in that: The end mold (4) is located inside the envelope of the bottom mold (1), side mold (2), wing mold (3), and edge mold (5).

3. The end formwork adapted to small-radius T-beams according to claim 1, characterized in that: The lower fixed template (4-1) is provided with tensioning anchor holes (4-11), and the panel of the lower fixed template (4-1) is vertically fixed to the panels of the bottom mold (1) and the side mold (2).

4. The end formwork for a small-radius T-beam according to claim 1, characterized in that: The upper positioning hole (4-21) of the upper horizontal angle adjustment template (4-2) and the lower positioning hole (4-12) of the lower fixed template (4-1) are connected by the horizontal angle adjustment positioning bolt (4-7), which can realize the horizontal angle rotation of the upper horizontal angle adjustment template (4-2).

5. An end formwork adapted to small-radius T-beams according to claim 1, characterized in that: The upper transverse slope angle adjustment template (4-3) and the upper horizontal angle adjustment template (4-2) are connected and fixed by nuts through the arc-shaped slot (4-31) and the horizontal angle adjustment template fixing stud (4-22), so that the upper part of the end mold (4) can be adjusted with the transverse slope angle of the wing mold (3).

6. The end formwork for adapting to small-radius T-beams according to claim 1, characterized in that: The upper width adjustment template (4-4) and the side fixing template (4-5) are hinged, with a pivot (4-6) in the middle of the hinge; the upper width adjustment template (4-4) and the upper cross slope angle adjustment template (4-3) are connected and fixed with the width adjustment template fixing stud (4-41) through the straight groove (4-32) using nuts; the side fixing template (4-5) and the side mold (5) are connected and fixed with the side fixing template positioning bolt (4-8) through the rectangular groove (4-51). The above movable connection can compensate for the length change caused by the upper rotation of the end mold (4).

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