Template applicable to structural changes of inner cavities of different types of segmental beams

Abstract

The invention relates to the technical field of segmental beam construction, in particular to a formwork applicable to structural changes of inner cavities of different types of segmental beams, which comprises a segmental beam, a segmental beam inner cavity is arranged in the segmental beam, a support frame body is arranged in the segmental beam inner cavity, an upper top plate frame is arranged above the support frame body, and a lower top plate frame is arranged above the upper top plate frame. The two sides of the upper top plate frame are symmetrically connected with upper chamfering frames, a first lower positioning frame is arranged at the bottom of the supporting frame body, second lower positioning frames are symmetrically arranged on the two sides of the first lower positioning frame, and lower chamfering frames are connected between the second lower positioning frames and the upper chamfering frames respectively. According to the formwork suitable for different types of segment beam inner cavity structure changes, the inner cavity formwork is adjusted in a sliding shrinkage mode, so that the inner cavity formwork forms cavity structures of various sizes, and the common quality problems of splicing seam slab staggering, slurry leakage and the like caused by the fact that an attaching block formwork is added are solved.

Description

Technical Field

[0001] The invention relates to the technical field of segmental beam construction, in particular to a template applicable to changes in the inner cavity structure of different types of segmental beams. Background Art

[0002] Segmental beams are a type of prefabricated component widely used in bridge construction. The entire bridge beam is divided into multiple segments according to a certain length. These segments are prefabricated in a factory and then transported to the construction site. These segments are installed in place one by one using lifting equipment and connected through wet or dry joints to form a continuous overall structure.

[0003] During the construction of existing highway segmental beams, in order to meet different design requirements, such as reducing dead weight, increasing rigidity, improving stress performance, and saving materials, the web structure dimensions of the segmental beams will continue to narrow from the span edge to the mid-span, thereby causing the inner cavity space of the beam segment to continue to expand. Conventional prefabricated segmental cavity formwork adapts to the changes in the inner cavity space by continuously adding block formwork. This method will lead to an increasing number of joints in the inner cavity formwork, which in turn makes the segmental cavity prone to common quality problems such as misaligned joints and leakage. Summary of the Invention

[0004] The purpose of the present invention is to provide a template that can be adapted to the changes in the inner cavity structure of different types of segmental beams, so as to solve the problem raised in the above background technology that the structural dimensions of the web of the segmental beams in the current market will continue to narrow from the span edge to the mid-span, thereby causing the inner cavity space of the beam segment to continue to increase. Conventional prefabricated segmental inner cavity templates adapt to the changes in the inner cavity space by continuously adding block templates. This method will lead to an increasing number of joints in the inner cavity templates, which will in turn lead to common quality problems such as misaligned joints and leakage in the segmental cavity.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a template applicable to different types of segmental beam cavity structures, comprising a segmental beam, a segmental beam cavity is provided in the segmental beam, a support frame is provided in the segmental beam cavity, an upper top plate frame is provided above the support frame, and upper chamfer frames are symmetrically connected to the upper top plate frame on both sides, a first lower positioning frame is provided at the bottom of the support frame, and a second lower positioning frame is symmetrically provided on both sides of the first lower positioning frame, and lower chamfer frames are respectively connected between the second lower positioning frame and the upper chamfer frame, and the upper chamfer The outer sides of the angle frame, upper top plate frame, lower chamfer frame, first lower positioning frame and second lower positioning frame are respectively fixed with the upper chamfer template, upper top plate template, lower chamfer template, second lower template and first lower template, one end of the upper chamfer frame and both ends of the lower chamfer frame are respectively fixed with special-shaped support strips, and the other end of the upper chamfer frame, both ends of the upper top plate frame and the end of the second lower positioning frame close to the lower chamfer frame are respectively provided with movable grooves, the two ends of the upper chamfer template and the lower chamfer template are respectively arc-shaped structures, and the special-shaped support strips are arranged at the movable grooves.

[0006] Preferably, the upper chamfering frame is an L-shaped structure, and hinges that are rotated by latches are fixed between the inner parts of the two ends of the upper chamfering frame and the upper top plate frame and the lower chamfering frame.

[0007] Preferably, a hinged member rotated by a latch is also fixed between the other end of the lower chamfering frame and the second lower positioning frame.

[0008] Preferably, the arc-shaped structures at both ends of the upper chamfer template and the lower chamfer template have the pin of the hinge as the center, and the arc-shaped portion of the upper chamfer template contacts and cooperates with the end of the upper top plate template, and the arc-shaped portion of the lower chamfer template contacts and cooperates with the end of the upper chamfer template and the first lower template respectively.

[0009] Preferably, an upper mounting frame is fixed to the upper end of the support frame body by welding, and the upper mounting frame is welded and fixed to the upper top plate frame.

[0010] Preferably, a lifting hydraulic cylinder is installed at the lower end of the support frame through bolts, connecting frames are symmetrically welded on both sides of the fixed end of the lifting hydraulic cylinder, and double-headed hydraulic cylinders are respectively fixed through the connecting frames.

[0011] Preferably, both ends of the double-headed hydraulic cylinder are fixed with lower movable frames by bolts respectively, and the lower end of the lower movable frame is fixed with a second lower mounting frame by welding, and the second lower mounting frame is welded and fixed to the second lower positioning frame.

[0012] Preferably, the movable end at the bottom of the lifting hydraulic cylinder is fixed with a first lower mounting frame by bolts, and the first lower mounting frame is fixed to the first lower positioning frame by welding.

[0013] Preferably, extension adjustment hydraulic cylinders are respectively provided between the two sides of the upper mounting frame and the longitudinal portion of the upper chamfering frame.

[0014] Preferably, both ends of the extension adjustment hydraulic cylinder are rotatably connected to U-shaped positioning seats through an insert rod, and the U-shaped positioning seats are respectively welded and fixed to the upper mounting frame and the upper chamfering frame.

[0015] Compared with the prior art, the present invention has the following advantages: the template, which can adapt to the varying internal structure of different types of segmental beams, uses a sliding and retracting method to adjust the internal template, allowing the internal template to form cavity structures of various sizes, thereby resolving common quality issues such as misaligned joints and grout leakage caused by adding patch templates. The template, which can adapt to the varying internal structure of different types of segmental beams, has curved structures on both sides of the upper and lower chamfer templates, and movable grooves at both ends of the upper top plate frame and the lower positioning frame for movable limiting of the chamfered area, ensuring a smooth and flat chamfered structure, thereby ensuring the quality of the segmental beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of a template structure applicable to changes in the inner cavity structure of different types of segment beams of the present invention;

[0017] Figure 2 This invention is a template that can be used to change the inner cavity structure of different types of segment beams Figure 1 A in the middle is an enlarged structural diagram;

[0018] Figure 3 This is a schematic diagram of the rising structure of the second lower template of a template applicable to different types of segment beam inner cavity structures of the present invention;

[0019] Figure 4 This is a side view of a template applicable to different types of segment beam inner cavity structure changes of the present invention;

[0020] Figure 5 This is a schematic diagram of an upper chamfer template adjustment structure of a template that is applicable to changes in the inner cavity structure of different types of segment beams of the present invention;

[0021] Figure 6 This is a schematic diagram of the staggered matching structure of the second lower template and the first lower template of a template that can be applied to changes in the inner cavity structure of different types of segment beams of the present invention.

[0022] In the figure: 1. Segmental beam; 101. Inner cavity of segmental beam; 2. Upper chamfering frame; 201. Upper chamfering formwork; 3. Upper top plate frame; 301. Upper top plate formwork; 4. Support frame; 401. Upper mounting frame; 402. First lower mounting frame; 403. Lower movable frame; 404. Second lower mounting frame; 5. Hinge; 6. Extension adjustment hydraulic cylinder; 601. U-shaped positioning seat; 7. Lower chamfering frame; 701. Lower chamfering formwork; 8. Lifting hydraulic cylinder; 801. Connecting frame; 9. First lower positioning frame; 901. Second lower formwork; 10. Second lower positioning frame; 1001. First lower formwork; 11. Double-head hydraulic cylinder; 12. Special-shaped support bar; 13. Movable groove. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-6The present invention provides a technical solution: a template that can be used for changes in the inner cavity structure of different types of segmental beams, including a segmental beam 1, a segmental beam inner cavity 101 is provided in the segmental beam 1, a support frame body 4 is provided in the segmental beam inner cavity 101, and an upper top plate frame 3 is provided above the support frame body 4, an upper mounting frame 401 is fixed to the upper end of the support frame body 4 by welding, and the upper mounting frame 401 is welded and fixed to the upper top plate frame 3, this structural support frame body 4 is used for positioning processing of various components in the segmental beam inner cavity 101, and the position of the template relative to the segmental beam 1 can be adjusted by moving the support frame body 4 relative to the segmental beam 1, and the upper top plate frame 3 provides reliable support and positioning processing for the upper top plate template 301, so that the upper chamfer frame 2 can be expanded and contracted under the positioning of the upper top plate frame 3. , thereby adjusting the angle of the upper chamfer template 201 to ensure that the size of the webs on both sides changes, a lifting hydraulic cylinder 8 is installed at the lower end of the support frame 4 by bolts, and a connecting frame 801 is symmetrically welded on both sides of the fixed end of the lifting hydraulic cylinder 8, and a double-headed hydraulic cylinder 11 is respectively fixed through the connecting frame 801. This structure can be used to install and position the double-headed hydraulic cylinder 11 through the lifting hydraulic cylinder 8. The lifting hydraulic cylinder 8, the double-headed hydraulic cylinder 11 and the extension adjustment hydraulic cylinder 6 are hydraulically driven for telescopic operation, and the upper top plate frame 3 is symmetrically connected to the upper chamfer frame 2 on both sides, and a first lower positioning frame 9 is provided at the bottom of the support frame 4, and a second lower positioning frame 10 is symmetrically provided on both sides of the first lower positioning frame 9, and the second lower positioning frame 10 is respectively connected to the upper chamfer frame 2. The lower chamfer frame 7, the two ends of the double-headed hydraulic cylinder 11 are respectively fixed with the lower movable frame 403 by bolts, and the lower end of the lower movable frame 403 is fixed with the second lower mounting frame 404 by welding, and the second lower mounting frame 404 is welded and fixed to the second lower positioning frame 10. This structure can drive the lower movable frames 403 on both sides to move in opposite directions through the double-headed hydraulic cylinder 11, thereby driving the second lower positioning frame 10 to move through the second lower mounting frame 404, so that the template at the bottom position can be slidably adjusted to the position, and the bottom movable end of the lifting hydraulic cylinder 8 is fixed with the first lower mounting frame 402 by bolts, and the first lower mounting frame 402 is welded and fixed to the first lower positioning frame 9. This structure can adjust the height position of the first lower positioning frame 9 through the lifting hydraulic cylinder 8. When the plate 901 is flush with the bottom of the first lower template 1001, the size of the segment beam cavity 101 is the largest. When the second lower template 901 is located above the first lower template 1001, the first lower template 1001 can move toward the middle to adapt to the adjustment of the position of the lower chamfer frame 7. When the second lower template 901 is located above the second lower mounting frame 404, the first lower templates 1001 can be closed to minimize the size of the segment beam cavity 101. The upper chamfer template 201, the upper top plate template 301, the lower chamfer template 701, the second lower template 901 and the first lower template 1001 are fixed to the outer sides of the upper chamfer frame 2, the upper top plate frame 3, the lower chamfer frame 7, the first lower positioning frame 9 and the second lower positioning frame 10 respectively. The upper chamfer frame 2 is an L-shaped structure.The inner parts of the two ends of the upper chamfer frame 2 and the upper top plate frame 3 and the lower chamfer frame 7 are fixed with hinges 5 that are rotated by pins. In this structure, the upper chamfer frame 2 and the lower chamfer frame 7 are rotated at various angles under the positioning of the hinges 5. The upper chamfer frame 2 is driven and adjusted by the extension adjustment hydraulic cylinder 6. One end of the upper chamfer frame 2 and the two ends of the lower chamfer frame 7 are respectively fixed with special-shaped support strips 12. The other end of the lower chamfer frame 7 and the second lower positioning frame 10 are also fixed with hinges 5 that are rotated by pins. This structure can make the lower chamfer The frame 7 is adaptively adjusted in angle by adjusting the position of the upper chamfer frame 2 and the second lower positioning frame 10, and the other end of the upper chamfer frame 2, the two ends of the upper top plate frame 3 and the end of the second lower positioning frame 10 close to the lower chamfer frame 7 are respectively provided with a movable groove 13, and the two ends of the upper chamfer template 201 and the lower chamfer template 701 are respectively arc-shaped structures, and the special-shaped support bar 12 is provided at the movable groove 13, the arc-shaped structures at both ends of the upper chamfer template 201 and the lower chamfer template 701 are centered on the pin of the hinge 5, and the arc-shaped part of the upper chamfer template 201 is aligned with the arc-shaped part of the lower chamfer template 701. The end of the upper top plate template 301 is in contact with each other, and the arc-shaped part of the lower chamfer template 701 is in contact with the end of the upper chamfer template 201 and the first lower template 1001 respectively. This structure allows the arc structure of the upper chamfer template 201 to be rotated and adjusted with the pin of the hinge 5 as the center, so as to realize the expansion and contraction of the upper chamfer template 201. The arc-shaped structure of the lower chamfer template 701 is also rotated and adjusted with the pin of the hinge 5 at the corresponding position as the center, and the templates are relatively tightly closed, effectively avoiding the quality of the joint misalignment and leakage. To address this issue, extension adjustment hydraulic cylinders 6 are installed between the longitudinal portion of the upper chamfer frame 2 and the upper mounting frame 401 on both sides. This structure allows the extension adjustment hydraulic cylinders 6 to control the angle of the upper chamfer frame 2. The ends of the extension adjustment hydraulic cylinders 6 are rotatably connected to U-shaped positioning seats 601 via plug rods. The U-shaped positioning seats 601 are welded to the upper mounting frame 401 and the upper chamfer frame 2, respectively. This structure allows the U-shaped positioning seats 601 to rotate and adjust both ends of the extension adjustment hydraulic cylinder 6 so that the extension adjustment hydraulic cylinder 6 can adapt to the angle of the upper chamfer frame 2.

[0025] Working principle: When using the template that can be applied to different types of segmental beam cavity structure changes, first, when the segmental beam 1 is prefabricated, the support frame 4 is positioned at the segmental beam cavity 101, and the upper mounting frame 401 firmly supports the upper top plate frame 3 to ensure the accurate position of the upper top plate template 301. By extending the hydraulic cylinder 6 to adjust the angle of the upper chamfer frame 2, the upper chamfer template 201 is rotated with the pin of the hinge 5 at the corresponding position as the center of the circle, ensuring that the upper chamfer template 201 is always in close contact with the upper top plate template 301. The movable groove 13 provides a movable space for the arc-shaped part of the upper chamfer template 201, and the special-shaped support bar 12 is used to enhance the arc-shaped structural strength of the upper chamfer template 201. The U-shaped positioning seat 601 allows the extension adjustment hydraulic cylinder 6 to adapt to the angle of the upper chamfer frame 2. After the angle of the upper chamfer frame 2 is adjusted, the position of the bottom template is adjusted according to the size of the inner cavity 101 of the segment beam. The lifting hydraulic cylinder 8 drives the first lower mounting frame 402 to rise and fall, and drives the first lower positioning frame 9 to rise and fall synchronously. When the second lower template 901 is aligned with the first lower template 1001, Normally, the position of the lower movable frame 403 is adjusted by the double-headed hydraulic cylinder 11, and the second lower positioning frame 10 is synchronously driven to move by the second lower mounting frame 404 to ensure that the second lower template 901 is tightly fitted with the first lower template 1001. When the second lower template 901 is located above the first lower template 1001, the second lower template 901 and the first lower template 1001 are misaligned. At this time, the position of the first lower template 1001 is adjusted to achieve a gradually reduced spacing between the first lower templates 1001, and the second lower template 901 is located on the second lower mounting frame. 404, the first lower formwork 1001 can be completely closed, and the lower chamfer frame 7 is adaptively adjusted with the adjustment of the upper chamfer frame 2 and the second lower positioning frame 10, ensuring that a relatively smooth structure is formed between the first lower formwork 1001, the lower chamfer formwork 701, the upper chamfer formwork 201, and the upper top plate formwork 301. The staggered structure between the first lower formwork 1001 and the second lower formwork 901 can effectively reduce the impact on the quality of the segment beam 1. The connecting frame 801 is used for the reliable positioning processing of the lifting hydraulic cylinder 8, thereby completing a series of tasks.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A template applicable to different types of segmental beam inner cavity structure changes, comprising a segmental beam (1), wherein the segmental beam (1) is provided with a segmental beam inner cavity (101), characterized in that: A support frame (4) is provided in the inner cavity (101) of the segment beam, and an upper top plate frame (3) is provided above the support frame (4), and upper chamfer frames (2) are symmetrically connected on both sides of the upper top plate frame (3), a first lower positioning frame (9) is provided at the bottom of the support frame (4), and second lower positioning frames (10) are symmetrically provided on both sides of the first lower positioning frame (9), and lower chamfer frames (7) are respectively connected between the second lower positioning frame (10) and the upper chamfer frame (2), and upper chamfer frames (2) are respectively fixed on the outer sides of the upper chamfer frame (2), the upper top plate frame (3), the lower chamfer frame (7), the first lower positioning frame (9) and the second lower positioning frame (10). A corner template (201), an upper top plate template (301), a lower chamfer template (701), a second lower template (901) and a first lower template (1001); one end of the upper chamfer frame (2) and both ends of the lower chamfer frame (7) are respectively fixed with a special-shaped support strip (12); and the other end of the upper chamfer frame (2), both ends of the upper top plate frame (3) and one end of the second lower positioning frame (10) close to the lower chamfer frame (7) are respectively provided with a movable groove (13); both ends of the upper chamfer template (201) and the lower chamfer template (701) are respectively arc-shaped structures, and the special-shaped support strip (12) is arranged at the movable groove (13).

2. A template applicable to different types of segment beam inner cavity structure changes according to claim 1, characterized in that: The upper chamfering frame (2) is an L-shaped structure, and hinged parts (5) that rotate via latches are fixed between the inner parts of the two ends of the upper chamfering frame (2) and the upper top plate frame (3) and the lower chamfering frame (7).

3. A template applicable to different types of segment beam inner cavity structure changes according to claim 2, characterized in that: A hinged member (5) is also fixed between the other end of the lower chamfering frame (7) and the second lower positioning frame (10) and is rotated by means of a latch.

4. A template applicable to different types of segment beam inner cavity structure changes according to claim 3, characterized in that: The arc-shaped structures at both ends of the upper chamfered template (201) and the lower chamfered template (701) have the pin of the hinge (5) as the center of the circle, and the arc-shaped portion of the upper chamfered template (201) contacts and cooperates with the end of the upper top plate template (301), and the arc-shaped portion of the lower chamfered template (701) contacts and cooperates with the ends of the upper chamfered template (201) and the first lower template (1001), respectively.

5. The template applicable to different types of segment beam inner cavity structure changes according to claim 1, characterized in that: An upper mounting frame (401) is fixed to the upper end of the support frame body (4) by welding, and the upper mounting frame (401) is fixed to the upper top plate frame (3) by welding.

6. The template applicable to different types of segment beam inner cavity structure changes according to claim 1, characterized in that: A lifting hydraulic cylinder (8) is installed at the lower end of the support frame (4) by means of bolts, and connecting frames (801) are symmetrically welded on both sides of the fixed end of the lifting hydraulic cylinder (8), and double-headed hydraulic cylinders (11) are respectively penetrated and fixed in the connecting frames (801).

7. A template applicable to different types of segment beam inner cavity structure changes according to claim 6, characterized in that: The two ends of the double-head hydraulic cylinder (11) are respectively fixed with a lower movable frame (403) by bolts, and the lower end of the lower movable frame (403) is fixed with a second lower mounting frame (404) by welding, and the second lower mounting frame (404) is fixed to the second lower positioning frame (10) by welding.

8. The template applicable to different types of segment beam inner cavity structures according to claim 6, characterized in that: The bottom movable end of the lifting hydraulic cylinder (8) is fixed with a first lower mounting frame (402) by means of bolts, and the first lower mounting frame (402) is fixed to the first lower positioning frame (9) by welding.

9. The template applicable to different types of segment beam inner cavity structure changes according to claim 5, characterized in that: Extension adjustment hydraulic cylinders (6) are respectively provided between the longitudinal portions of the upper chamfering frame (2) and the two sides of the upper mounting frame (401).

10. A template applicable to different types of segment beam inner cavity structure changes according to claim 9, characterized in that: The two ends of the extension adjustment hydraulic cylinder (6) are rotatably connected to a U-shaped positioning seat (601) via an insertion rod, and the U-shaped positioning seat (601) is respectively welded and fixed to the upper mounting frame (401) and the upper chamfering frame (2).

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