A casting mold for the end joint of a T-shaped simply supported beam

Abstract

The present invention discloses a casting mold for the end joint of a T-shaped simply supported beam, which includes a template assembly; a retractable support assembly is arranged on the end face of the template assembly facing away from the T-shaped casting area; when the support assembly is opened and pressed against the end of the T-shaped beam on one side of the end joint, the template assembly abuts against the end of the T-shaped beam on the other side of the end joint, and a T-shaped casting area is formed between the end of the T-shaped beam on this side; the template assembly includes a main template; the main template includes a U-shaped part, an extension part, and a sealing bottom part; bottom templates are arranged at the bottom ends of the U-shaped parts on both sides of the extension part, and side templates are arranged on both sides of the extension part. Through the structural settings of the main template, the bottom template, the side template, and the support assembly in the present invention, when the first support rod and the second support rod are opened and supported on the end face of the T-shaped beam on one side, a T-shaped casting area is formed between the main template, the bottom template, the side template and the end face of the T-shaped beam on the other side, realizing the casting of concrete in the end joint to lengthen the length of the T-shaped beam, reduce the width of the end joint or fill the spalled part.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering, and particularly relates to a casting mold for the end joint of a T-shaped simply supported beam. Background Art

[0002] Prefabrication and assembly is a common construction technology for the upper load-bearing structure of small and medium-span bridges. Factory prefabrication significantly improves the quality of components. The overall construction quality of the bridge is more restricted by the installation accuracy of prefabricated components and the concrete quality of cast-in-place components. Among them, during the bridge construction process, prefabricated and assembled simply supported beams usually include hollow slab beams, T-shaped beams, and box girders. The widely used one is the prefabricated and assembled T-shaped simply supported beam.

[0003] The cross-section of the T-shaped beam is in the form of a flange plate-web. During prefabrication and assembly, multiple T-shaped beams are connected horizontally, and their ends stand on the upper part of the pier to form a T-shaped simply supported beam. The structure of the T-shaped simply supported beam is as Figure 1 shown. When the error of prefabrication and assembly is large, the width deviation of the gap 01 between the end joints 0 of adjacent T-shaped beams is large. In order to ensure the strength of the prefabricated and assembled T-shaped simply supported beam, it is necessary to pour concrete into the end joint 01.

[0004] In addition, for many bridges using T-shaped simply supported beams, after many years, the concrete poured in the end joints between adjacent T-shaped beams spalls and holes and gaps appear. In order to ensure the stability of the bridge, it is necessary to pour and fill the concrete again at the position where the concrete in the end joint spalls.

[0005] Based on the above problems, the present application proposes a casting mold for the end joint of a T-shaped simply supported beam, which can not only pour concrete into the end joint of the prefabricated and assembled T-shaped simply supported beam to lengthen the length of the T-shaped beam and reduce the width of the end joint, but also pour and fill the concrete again at the position where the concrete between adjacent T-shaped beams in the existing bridge spalls. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a casting mold for the end joint of a T-shaped simply supported beam.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A casting mold for the end joint of a T-shaped simply supported beam includes a template assembly that can form a T-shaped casting area between the end of the T-shaped beam.

[0009] A retractable support assembly is arranged on the end face of the template assembly facing away from the T-shaped casting area;

[0010] When the support assembly expands and presses against the end of the T-shaped beam on one side of the end joint, the template assembly abuts against the end of the T-shaped beam on the other side of the end joint to form a T-shaped casting area between the end of the T-shaped beam on this side;

[0011] The template component includes a main template; the main template includes a U-shaped part, a middle part of the vertical end plate of the U-shaped part extends downward to form an extension part, and a bottom end of the extension part bends and extends inward to the U-shaped part to form a bottom sealing part;

[0012] Bottom templates are arranged at bottom ends of the U-shaped part on both sides of the extension part, and the bottom templates can block the bottom ends of the U-shaped part on both sides of the extension part;

[0013] Side templates are arranged on both sides of the extension part, and the side templates can block both side ends of the extension part and the bottom sealing part.

[0014] Preferably, the bottom template is rotatably connected to a bottom end of the vertical end plate in the U-shaped part;

[0015] The side template is rotatably connected to a side end of the extension part.

[0016] Preferably, a first support is arranged on an end face of the U-shaped part facing away from the T-shaped pouring area, and a threaded hole extending in a vertical direction is arranged on the first support;

[0017] A second support is arranged on an end face of the extension part facing away from the T-shaped pouring area, and a sliding hole extending in a vertical direction is arranged on the second support seat;

[0018] The support component includes a movable rod component, a first support rod, and a second support rod;

[0019] The movable rod component includes a threaded rod and a sliding rod, and a bottom end of the threaded rod is rotatably connected to the sliding rod;

[0020] One end of the second support rod is hinged to a bottom end of the sliding rod, and the other end of the second support rod is hinged to a bottom end of the first support rod;

[0021] The threaded rod is in threaded connection with the threaded hole, and the sliding rod is in sliding connection with the sliding hole; a top end of the first support rod is hinged to an outer end of the first support through a detachable pin shaft.

[0022] Preferably, the pin shaft, a hinge shaft between the first support rod and the second support rod, and a hinge shaft between the second support rod and the sliding rod are parallel to each other, perpendicular to the sliding rod, and parallel to an outer end face of the extension part.

[0023] Preferably, a first hinge seat for hinged connection with the first support rod is arranged at an outer end of the first support.

[0024] Preferably, a guide rod is vertically and fixedly arranged on an upper part of the sliding rod, and pressing rods extending vertically downward are symmetrically arranged at both ends of the guide rod;

[0025] Guide blocks are provided on the bottom formwork;

[0026] When the pressure rod presses down the guide block, the bottom formwork on the corresponding side can be rotated to seal the bottom end of the U-shaped part.

[0027] Preferably, two side formwork support plates are provided at the bottom end of the sliding rod; one end of the side formwork support plate is hinged to the sliding rod, and waist-shaped holes are provided at the other end of the side formwork support plate;

[0028] On both sides of the lower part of the end face of the extension part facing away from the T-shaped pouring area, third supports are symmetrically provided, and connecting columns extending in a direction perpendicular to the end face of the extension part are provided on the third supports;

[0029] The connecting columns are located in the waist-shaped holes;

[0030] When the side formwork support plate extends outwards, the side formwork can be fixed in a state of sealing the extension part and the side surface of the bottom seal.

[0031] Preferably, a second hinge seat for hinged connection with the side formwork support plate is provided at the bottom end of the sliding rod;

[0032] On the end face of the second hinge seat facing away from the extension part, a third hinge seat for hinged connection with the second support rod is provided.

[0033] The beneficial effects of the present invention are:

[0034] In the T-shaped simply supported beam end joint pouring mold of the present invention, through the structural settings of the main formwork, bottom formwork, side formwork, and support components, when the first support rod and the second support rod are opened and supported on one side of the T-shaped beam end face, a T-shaped pouring area is formed between the main formwork, bottom formwork, side formwork and the other side of the T-shaped beam end face, so as to realize the pouring of concrete in the end joint, to lengthen the length of the T-shaped beam, reduce the width of the end joint or fill the spalled part. The structure is simple and the operation is convenient. At the same time, the pouring mold of the present application can be reused. Description of the Drawings

[0035] The specification drawings forming a part of the present application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application.

[0036] Figure 1 It is a schematic structural diagram of a T-shaped simply supported beam in the background art;

[0037] Figure 2 It is a schematic three-dimensional structural diagram of the T-shaped simply supported beam end joint pouring mold of the present invention;

[0038] Figure 3It is a schematic structural diagram when the bottom formwork and side formwork in the T-shaped simply supported beam end joint pouring mold of the present invention seal the T-shaped pouring area;

[0039] Figure 4 It is a schematic structural diagram of the movable rod assembly in the present invention;

[0040] Figure 5 It is a schematic right view of the structural diagram of the main formwork in the present invention;

[0041] Figure 6 It is a schematic diagram of the rotation process of the bottom formwork in the present invention;

[0042] Figure 7 It is a schematic structural diagram when the support assembly in the present invention is opened;

[0043] Figure 8 It is a schematic structural diagram when the support assembly in the present invention is contracted;

[0044] Figure 9 It is a schematic structural diagram when the first support rod and the second support rod in the present invention are folded;

[0045] Among them,

[0046] 0 - T-shaped beam, 01 - end joint;

[0047] 1 - movable rod assembly, 101 - threaded rod, 102 - sliding rod, 103 - guide rod, 104 - pressing rod, 105 - second hinge seat, 106 - third hinge seat, 2 - first support rod, 201 - pin shaft, 3 - second support rod, 4 - side formwork support plate, 5 - kidney-shaped hole, 6 - T-shaped pouring area, 7 - side formwork, 8 - bottom formwork, 801 - guide block, 9 - main formwork, 901 - U-shaped part, 902 - extension part, 903 - sealing bottom part, 904 - first support, 9041 - threaded hole, 9042 - first hinge seat, 905 - second support, 9051 - sliding hole, 906 - third support, 9061 - connecting column. Detailed implementation manners

[0048] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] In the present invention, terms such as "upper", "lower", "bottom", "top", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relational terms determined for the convenience of describing the structural relationship of each component or element of the present invention and do not specifically refer to any component or element of the present invention, and should not be construed as a limitation to the present invention.

[0051] In the present invention, terms such as "connected" and "joined" should be understood in a broad sense, which may mean a fixed connection, an integral connection or a detachable connection; it may be directly connected or indirectly connected through an intermediate medium. For those related scientific research or technical personnel in the field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances and should not be construed as a limitation to the present invention.

[0052] The present invention will be further described below with reference to the drawings and embodiments.

[0053] As Figure 2-3 shown, a casting mold for the end joint of a T-shaped simply supported beam includes a template assembly that can form a T-shaped casting area 6 between the end of the T-shaped beam 0.

[0054] A retractable support assembly is provided on the end face of the template assembly facing away from the T-shaped casting area 6.

[0055] When the support assembly expands and presses against the end of the T-shaped beam 0 on one side of the end joint 01, the template assembly abuts against the end of the T-shaped beam 0 on the other side of the end joint 01 to form a T-shaped casting area 6 between the ends of the T-shaped beam 0 on this side, thereby realizing the fixation of the casting mold.

[0056] As Figure 5 shown, the template assembly includes a main template 9.

[0057] The main template 9 includes a U-shaped part 901. The middle of the vertical end plate of the U-shaped part 901 extends downward to form an extension part 902, and the bottom end of the extension part 902 bends and extends inward to the U-shaped part 901 to form a sealing bottom part 903.

[0058] Bottom templates 8 are provided at the bottom ends of both sides of the U-shaped part 901 on both sides of the extension part 902, and the bottom templates 8 can block the bottom ends of both sides of the U-shaped part 901 on both sides of the extension part 902.

[0059] On both sides of the extension part 902, side templates 7 are provided, and the side templates 7 can block both side ends of the extension part 902 and the bottom sealing part 903. Among them, for showing the structure, Figure 2 only the bottom template 8 and the side template 7 on one side are shown.

[0060] Preferably, the bottom template 8 is rotatably connected to the bottom end of the vertical end plate in the U-shaped part 901;

[0061] The side template 7 is rotatably connected to the side end of the extension part 902.

[0062] Preferably, a first support 904 is provided on the end face of the U-shaped part 901 facing away from the T-shaped pouring area 6, and a threaded hole 9041 extending in the vertical direction is provided on the first support 904;

[0063] A second support 905 is provided on the end face of the extension part 902 facing away from the T-shaped pouring area 6, and a sliding hole 9051 extending in the vertical direction is provided on the second support 905;

[0064] The support assembly includes a movable rod assembly 1, a first support rod 2, and a second support rod 3;

[0065] As Figure 4 shown, the movable rod assembly 1 includes a threaded rod 101 and a sliding rod 102, and the bottom end of the threaded rod 101 is rotatably connected to the sliding rod 102;

[0066] One end of the second support rod 3 is hinged to the bottom end of the sliding rod 102, and the other end of the second support rod 3 is hinged to the bottom end of the first support rod 2;

[0067] The threaded rod 101 is threadedly connected to the threaded hole 9041, and the sliding rod 102 is slidably connected to the sliding hole 9051; the top end of the first support rod 2 is hinged to the outer end of the first support 904 through a detachable pin 201.

[0068] Preferably, the pin 201, the hinge axis between the first support rod 2 and the second support rod 3, and the hinge axis between the second support rod 3 and the sliding rod 102 are parallel to each other, perpendicular to the sliding rod 102, and parallel to the outer end face of the extension part 902.

[0069] When the threaded rod 101 is rotated, the threaded rod 101 will drive the sliding rod 102 to move up and down along the sliding hole 9051. When the sliding rod 102 moves upward, it drives the second support rod 3 and the first support rod 2 to contract. When the sliding rod 102 moves downward, it drives the second support rod 3 and the first support rod 2 to open.

[0070] Preferably, a first hinge seat 9042 for hinged connection with the first support rod 2 is provided at the outer end of the first support 904.

[0071] Preferably, a guide rod 103 is vertically and fixedly provided at the upper part of the sliding rod 102, and pressing rods 104 extending vertically downward are symmetrically arranged at both ends of the guide rod 103;

[0072] A guide block 801 is provided on the bottom formwork 8;

[0073] When the pressing rod 104 presses down the guide block 801, the bottom formwork 8 on the corresponding side can be rotated to block the bottom end of the U-shaped part 901.

[0074] Specifically, an acute angle is formed between the guide block 801 and the end face of the bottom formwork 8. During the downward pressing of the pressing rod 104, the rotation schematic diagram of the bottom formwork 8 is as shown in Figure 6 shown;

[0075] Specifically, the hinge shaft between the top end of the first support rod 2 and the first support 904 is parallel to the guide rod 103.

[0076] When the threaded rod 101 is rotated to drive the sliding rod 102 to move downward along the sliding hole 9051, the pressing rod 104 presses down the guide block 801, prompting the bottom formwork 8 to rotate upward to block the bottom end of the U-shaped part 901; therefore, when the threaded rod 101 is rotated in the present application to open the second support rod 3 and the first support rod 2 to abut against the end of the T-shaped beam 0 on one side of the end joint 01 to fix the entire device, the bottom formwork 8 can be simultaneously rotated to the horizontal to block the bottom end of the U-shaped part 901, so as to form the T-shaped pouring area 6.

[0077] Preferably, two side formwork support plates 4 are provided at the bottom end of the sliding rod 102; one end of the side formwork support plate 4 is hinged to the sliding rod 102, and a waist-shaped hole 5 is provided at the other end of the side formwork support plate 4;

[0078] Third supports 906 are symmetrically arranged on both sides of the lower part of the end face of the extension part 902 facing away from the T-shaped pouring area 6, and connecting columns 9061 extending in a direction perpendicular to the end face of the extension part 902 are provided on the third supports 906;

[0079] The connecting column 9061 is located in the waist-shaped hole 5 to achieve hinged connection;

[0080] When the side formwork support plate 4 extends outwards, the side formwork 7 can be fixed in a state of blocking the extension part 902 and the side face of the bottom sealing part 903.

[0081] Specifically, the hinge shaft between the side formwork support plate 4 and the sliding rod 102 is parallel to the connecting shaft 9061.

[0082] When the threaded rod 101 is rotated to drive the sliding rod 102 to move downward along the sliding hole 9051, the waist-shaped hole 5 on the side formwork support plate 4 moves outward along the connecting shaft 9061, so as to abut against the hinged end of the side formwork 7, so as to fix the side formwork 7 in the state of abutting against the side surfaces of the plugging extension 902 and the bottom plugging part 903; therefore, when the threaded rod 101 is rotated in this application to open the second support rod 3 and the first support rod 2 to abut against the end of the T-shaped beam 0 on one side of the end joint 01 to fix the whole device, the fixing of the side formwork 7 can be synchronously realized to plug both sides of the extension 902 and the bottom plugging part 903, so as to form the T-shaped pouring area 6.

[0083] Therefore, when the threaded rod 101 is rotated in this application to open the second support rod 3 and the first support rod 2 to abut against the end of the T-shaped beam 0 on one side of the end joint 01 to fix the whole device, the bottom formwork 8 can be rotated to the horizontal to plug the bottom end of the U-shaped part 901, and the side formwork 7 can be fixed to plug both sides of the extension 902 and the bottom plugging part 903, so as to form the T-shaped pouring area 6.

[0084] Preferably, a second hinge seat 105 for hinged connection with the side formwork support plate 4 is arranged at the bottom end of the sliding rod 102;

[0085] A third hinge seat 106 for hinged connection with the second support rod 3 is arranged on the end face of the second hinge seat 105 facing away from the extension 902.

[0086] A pouring mold for the end joint of a T-shaped simply supported beam, and its specific implementation manner is as follows:

[0087] When the width of the end joint between two adjacent T-shaped beams 0 is too large, the concrete is poured by using the pouring mold of this application to lengthen the length of one side of the T-shaped beam 0:

[0088] Rotate the threaded rod 101 to drive the sliding rod 102 to move upward, so that the first support rod 2 and the second support rod 3 contract; then rotate the side formwork 7 to the state of plugging the side surfaces of the extension 902 and the bottom plugging part 903, and the bottom formwork 8 naturally hangs down under the action of gravity;

[0089] Then lower the mold to a proper position in the end joint 01, and rotate the threaded rod 101 to drive the sliding rod 102 to move downward, so that the first support rod 2 and the second support rod 3 open and press on the end face of one side of the T-shaped beam, as Figure 7As shown, while the pressure bar 104 presses down the guide block 801 to rotate the bottom template 8 to the horizontal to block the bottom end of the U-shaped part 901 (at this time, the inner end of the bottom template 8 abuts against the end face of the T-shaped beam), the waist-shaped hole 5 on the side template support plate 4 moves outward along the connecting shaft 9061 to abut against the hinged end of the side template 7, so as to fix the side template 7 in the state of abutting against the side faces of the blocking extension part 902 and the bottom sealing part 903 (at this time, the side template 7 abuts against the end face of the T-shaped beam). At this time, a T-shaped pouring area 6 is formed between the main template 9, the two bottom templates 8, the two side templates 7 and the end face of the T-shaped beam 0;

[0090] Pour concrete into the T-shaped pouring area 6;

[0091] After the concrete solidifies, tap the main template 9 to separate the bottom template 8 and the side template 7 from the concrete; then rotate the threaded rod 101 to drive the sliding rod 102 to move upward, so that the first support rod 2 and the second support rod 3 contract, as Figure 8 shown. At the same time, open the bottom template 8 and the side template 7; finally, remove the pin shaft 201, fold the first support rod 2 and the second support rod 3 and set them vertically, as Figure 9 shown, to leave a space;

[0092] Finally, take out the casting mold after the support assembly is contracted from the end joint 01.

[0093] When it is necessary to re-pour and fill the concrete at the position where the concrete has peeled off between adjacent T-shaped beams in the existing bridge, first pre-treat the concrete peeling area to facilitate the lowering of the casting mold of the present application. After the casting mold is lowered, pour the concrete into the T-shaped pouring area 6 in the same way.

[0094] At the same time, for T-shaped beams with different end face sizes and end joints 01 with different gap widths, casting molds of different size models can be designed to meet the concrete pouring operations of T-shaped beams with different sizes and end joints with different widths.

[0095] Although the specific embodiments of the present invention are described above in conjunction with the drawings, it is not a limitation to the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the present invention.

Claims

1. A casting mold for the end joint of a T-shaped simply supported beam, characterized in that, it includes a template assembly that can form a T-shaped casting area with the end of the T-shaped beam; a retractable support assembly is arranged on the end face of the template assembly facing away from the T-shaped casting area; when the support assembly expands and presses against the end of the T-shaped beam on one side of the end joint, the template assembly abuts against the end of the T-shaped beam on the other side of the end joint to form a T-shaped casting area between the end of the T-shaped beam on this side; the template assembly includes a main template; the main template includes a U-shaped part, a vertical end plate in the middle of the U-shaped part extends downward to form an extension part, and the bottom end of the extension part bends and extends inward to the U-shaped part to form a sealing bottom part; bottom templates are arranged at the bottom ends of the U-shaped parts on both sides of the extension part, and the bottom templates can block the bottom ends of the U-shaped parts on both sides of the extension part; side templates are arranged on both sides of the extension part, and the side templates can block both side ends of the extension part and the sealing bottom part; the bottom template is rotatably connected to the bottom end of the vertical end plate in the U-shaped part; the side template is rotatably connected to the side end of the extension part; a first support is arranged on the end face of the U-shaped part facing away from the T-shaped casting area, and a threaded hole extending in the vertical direction is arranged on the first support; a second support is arranged on the end face of the extension part facing away from the T-shaped casting area, and a sliding hole extending in the vertical direction is arranged on the second support; the support assembly includes a movable rod assembly, a first support rod, and a second support rod; the movable rod assembly includes a threaded rod and a sliding rod, and the bottom end of the threaded rod is rotatably connected to the sliding rod; one end of the second support rod is hinged to the bottom end of the sliding rod, and the other end of the second support rod is hinged to the bottom end of the first support rod; the threaded rod is threadedly connected to the threaded hole, and the sliding rod is slidably connected to the sliding hole; the top end of the first support rod is hinged to the outer end of the first support by a detachable pin shaft; the pin shaft, the hinge shaft between the first support rod and the second support rod, and the hinge shaft between the second support rod and the sliding rod are parallel to each other, perpendicular to the sliding rod, and parallel to the outer end face of the extension part; a guide rod is vertically and fixedly arranged on the upper part of the sliding rod, and pressing rods extending vertically downward are symmetrically arranged at both ends of the guide rod; a guide block is arranged on the bottom template; when the pressing rod presses down the guide block, it can make the corresponding side bottom template rotate to block the bottom end of the U-shaped part; two side template support plates are arranged at the bottom end of the sliding rod; one end of the side template support plate is hinged to the sliding rod, and a waist-shaped hole is arranged at the other end of the side template support plate; third supports are symmetrically arranged on both sides of the lower part of the end face of the extension part facing away from the T-shaped casting area, and connecting columns extending in a direction perpendicular to the end face of the extension part are arranged on the third supports; the connecting column is located in the waist-shaped hole; when the side template support plate extends outwards, it can fix the side template in the state of blocking the sides of the extension part and the sealing bottom part.

2. The casting mold for the end joint of a T-shaped simply supported beam according to claim 1, characterized in that, a first hinge seat for hinged connection with the first support rod is arranged at the outer end of the first support.

3. The T-shaped simply supported beam end joint pouring mold according to claim 1, characterized in that, a second hinge seat for hinged connection with the side formwork support plate is arranged at the bottom end of the sliding rod; a third hinge seat for hinged connection with the second support rod is arranged on the end face of the back extension part of the second hinge seat.

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