Fabricated bent cap construction support

Abstract

The utility model provides an assembly type bent cap construction support, which belongs to the field of bridge engineering bent cap construction, and comprises a main truss, a height adjusting piece, a bent cap template support frame, a bent cap, a steel pipe upright post support and a concrete strip-shaped foundation, and the lower end of the main truss is connected with the concrete strip-shaped foundation through the steel pipe upright post support; the lower end of the steel pipe stand column support is connected with the concrete strip-shaped foundation through a flange plate, and the upper end of the steel pipe stand column support is detachably connected with the main truss through a flange plate. The lower end of the height adjusting piece is connected with the main truss, and the upper end is connected with the bent cap formwork supporting frame. And the cover beam is arranged on the cover beam template support frame on the main truss. According to the utility model, the height adjusting piece is arranged, so that the cover beam is convenient to unload, the cover beam is more convenient to dismount, and the turnover use is easy. The steel pipe stand column support and the main truss can be transported to a construction site to be installed after being machined in a backfield, the safety coefficient of site construction is high, and work efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the field of bridge engineering cap beam construction, and particularly relates to an assembled cap beam construction bracket. Background Art

[0002] Due to environmental constraints, bridge cap beam construction often requires the erection of supports, upon which the cap beam formwork is erected. In the past, pin-type or hoop-type supports were often used, particularly for large bridges, due to the large cap beam structure, long cantilever lengths, and high concrete volume.

[0003] However, for piers with rectangular cross-sections, if the hoop method is used, the hoop body should be a flexible hoop without circumferential reinforcement. For large cap beams, sufficient bolts are required to ensure pre-tension, so the hoop body height is large, making on-site construction difficult. Due to the non-cylindrical hoop, the hoop is subjected to uneven force in both direction and bolt stress, posing a greater construction safety risk. The construction cost is also high. If the pin rod method is used, the position and specifications of the pin rods must be designed according to the cross-sectional dimensions of the pier body and the volume of the cap beam, which is greatly affected by the pier body and cap beam structure. Pre-buried cavities must be reserved in advance at the pier body pin rod positions, which has a certain impact on the cross-sectional force and appearance of the pier body. Traditional full-floor floor-standing brackets have very high requirements for foundation bearing capacity and foundation settlement, and require a long construction period, a large investment in manpower and material resources, and high construction costs.

[0004] To this end, a prefabricated cap beam construction bracket is provided, which has high safety, requires less materials, is quick to install and disassemble, and is convenient for turnover. Utility Model Content

[0005] In order to overcome the problems of inconvenient installation and high cost of existing construction supports, the present invention provides an assembled cap beam construction support. A flange is provided at the bottom of the web of the main truss of the present invention, which is connected to the flange at the top of the steel pipe column by bolts, making installation and disassembly more convenient and quick. The cap beam formwork support frame of the present invention is connected to the steel pipe column support through a height adjustment member, which facilitates the removal of the cap beam, making the removal of the cap beam more convenient and easy to use. The steel pipe column support and the main truss of the present invention can be processed separately in the back field and then transported to the construction site for installation. The on-site construction has a high safety factor and fast work efficiency.

[0006] The technical solution adopted by this utility model is:

[0007] An assembled cap beam construction support comprises a main truss, a height adjustment member, a cap beam formwork support frame, a cap beam, a steel pipe column support frame and a concrete strip foundation, wherein the lower end of the main truss is connected to the concrete strip foundation via the steel pipe column support frame; the lower end of the steel pipe column support frame is connected to the concrete strip foundation via a flange, and the upper end of the steel pipe column support frame is detachably connected to the main truss via a flange; the lower end of the height adjustment member is connected to the main truss, and the upper end is connected to the cap beam formwork support frame; the cap beam is arranged on the cap beam formwork support frame on the main truss.

[0008] The height adjustment member is a sand cylinder structure, which includes an upper pressure-bearing cylinder and a lower pressure-bearing cylinder. The lower end of the upper pressure-bearing cylinder is located in the lower pressure-bearing cylinder. The lower pressure-bearing cylinder below the lower end surface of the upper pressure-bearing cylinder is filled with sand, and switches are correspondingly provided on both sides of the lower part of the lower pressure-bearing cylinder.

[0009] The switch comprises a sand hole arranged on the lower side wall of the lower pressure-bearing cylinder, a nut and a bolt arranged outside the sand hole, and the nut is tightened on the side wall of the lower pressure-bearing cylinder and is coaxial with the sand hole.

[0010] The cap beam is a cubic frame.

[0011] The steel pipe column bracket includes a steel pipe column, a parallel joint and a diagonal brace. There are multiple steel pipe columns, and two adjacent steel pipe columns are connected horizontally by parallel joints and diagonal braces; the longitudinal sections of the steel pipe columns are connected by flanges and bolts.

[0012] The main truss comprises two single trusses and tie rods. The two single trusses are arranged in parallel, respectively placed on both sides of the cap beam, and connected by the tie rods.

[0013] The single truss comprises an upper chord, a lower chord and a web tie rod. The upper chord and the lower chord are arranged in parallel up and down and are connected by the web tie rod.

[0014] The length of the upper chord is greater than that of the lower chord.

[0015] The tie rods are made of precision-rolled threaded steel bars.

[0016] Beneficial effects of the utility model:

[0017] The utility model improves the safety of cap beam construction, reduces the input of temporary materials for cap beam construction, and improves the work efficiency of cap beam construction.

[0018] In the utility model, the two single trusses of the main truss are fixed to the pier body by pulling the tension rods, which greatly increases the stability of the main truss. When dismantling, it is only necessary to manually pull out the tension rods, which is convenient and quick.

[0019] In the utility model, a flange is provided at the bottom of the web of the main truss, which is connected to the flange at the top of the steel pipe column by bolts, so that installation and disassembly are convenient and quick.

[0020] The cover beam template support frame of the utility model is connected to the steel pipe column support through a height adjustment member, which is convenient for unloading the cover beam, making the removal of the cover beam more convenient and easy to use.

[0021] The steel pipe column bracket and the main truss in the utility model can be processed separately in the back field and then transported to the construction site for installation. The on-site construction has a high safety factor and fast work efficiency.

[0022] The utility model has a simple structure, is easy to install and disassemble manually, has reasonable and clear force, has strong overall stability, and greatly improves the efficiency of cap beam construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the front elevation of the present utility model.

[0025] Figure 2 A side elevation diagram of the present invention.

[0026] Figure 3 It is a structural diagram of the sand barrel.

[0027] Figure 4 It is a schematic diagram of the single truss structure in the main truss.

[0028] Figure 5 It is a schematic diagram of the flange structure.

[0029] Figure 6 It is a schematic diagram of the concrete strip foundation structure.

[0030] In the figure, the accompanying drawings are marked as follows:

[0031] 1. Concrete strip foundation; 2. Steel pipe column; 3. Main truss; 4. Height adjustment piece; 5. Fastening bolts; 6. Cap beam; 7. Tie rod; 8. Flat joint; 9. Diagonal brace; 10. Flange; 11. Upper chord; 12. Lower chord; 13. Web tie rod; 14. Upper pressure tube; 15. Lower pressure tube; 16. Switch. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are 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.

[0033] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes, relative sizes, and positional relationships of the various regions and layers shown in the figures are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0034] Example 1:

[0035] In order to overcome the problems of inconvenient installation and high cost of existing construction brackets, the utility model provides Figures 1-6 The illustrated embodiment shows an assembled cap beam construction support. A flange is provided at the bottom of the web of the main truss of the utility model, which is connected to the flange at the top of the steel pipe column by bolts, making installation and disassembly more convenient and quick. The cap beam formwork support frame of the utility model is connected to the steel pipe column support through a height adjustment member 4, which facilitates the removal of the cap beam, making the removal of the cap beam more convenient and easy to use. After the steel pipe column support and the main truss of the utility model are processed separately in the back field, they are transported to the construction site for installation. The on-site construction has a high safety factor and fast work efficiency.

[0036] A prefabricated cap beam construction support comprises a main truss 3, a height adjustment member 4, a cap beam formwork support frame 5, a cap beam 6, a steel pipe column support and a concrete strip foundation 1, wherein the lower end of the main truss 3 is connected to the concrete strip foundation 1 via the steel pipe column support; the lower end of the steel pipe column support is connected to the concrete strip foundation 1 via a flange 10, and the upper end of the steel pipe column support is detachably connected to the main truss 3 via the flange 10; the lower end of the height adjustment member 4 is connected to the main truss 3, and the upper end is connected to the cap beam formwork support frame 5; the cap beam 6 is arranged on the cap beam formwork support frame 5 on the main truss 3.

[0037] like Figure 1 and Figure 2As shown, the cap beam formwork support frame 5 of the present invention is connected to the steel pipe column support through the height adjustment member 4, which facilitates the removal of the cap beam 6, making the removal of the cap beam 6 more convenient and easy to use. The steel pipe column support and the main truss piece 3 of the present invention can be processed separately in the back-end and transported to the construction site for installation, which has a high safety factor and fast work efficiency.

[0038] In the present invention, the concrete strip foundation 1 can be prefabricated in advance on site. Based on the size of the cap beam 6, the horizontal spacing between the steel pipe columns 2 and the height of the embedded steel pipes in the bottom section of the concrete strip foundation 1 are determined. The concrete strip foundation 1 is then prefabricated on site. A flange 10 is provided on the top of the steel pipes in the bottom section of the concrete strip foundation 1 and connected to the steel pipe columns 2 via a flange. The present invention allows for prefabrication and installation in advance, effectively improving work efficiency.

[0039] In the present invention, the concrete strip foundation 1 acts directly on the pier cap, and there is no influence of foundation settlement on the cap beam 6, thereby increasing the structural safety and stability during the construction process.

[0040] In the present invention, a flange 10 is provided at the bottom of the web of the main truss 3 and is connected to the flange 10 at the top of the steel pipe column 2 by bolts, so that installation and disassembly are convenient and quick.

[0041] In the present invention, the cap beam formwork support frame 5 (the cap beam formwork support frame 5 includes a transverse distribution beam and a longitudinal load-bearing beam) is connected to the assembled steel pipe column bracket through a height adjustment member 4, which facilitates the unloading of the cap beam 6, making the dismantling of the cap beam 6 more convenient and easy to rotate and use.

[0042] The steel pipe column bracket and main truss 3 in the utility model are processed separately in the back field and transported to the construction site for installation. The on-site construction has a high safety factor and fast work efficiency. The utility model has a simple structure, is easy to install and disassemble manually, has reasonable and clear force, and has strong overall stability, which greatly improves the construction efficiency of the cap beam 6.

[0043] Example 2:

[0044] Based on Example 1, in this embodiment, preferably, the height adjustment member 4 is a sand cylinder structure, and the sand cylinder structure includes an upper pressure cylinder 14 and a lower pressure cylinder 15. The lower end of the upper pressure cylinder 14 is located in the lower pressure cylinder 15, and the lower pressure cylinder 15 below the lower end surface of the upper pressure cylinder 14 is filled with sand. Switches 16 are correspondingly provided on both sides of the lower part of the lower pressure cylinder 15.

[0045] Preferably, the switch 16 includes a sand hole provided on the lower side wall of the lower pressure-bearing cylinder 15, a nut and a bolt provided outside the sand hole, and the nut is tightened on the side wall of the lower pressure-bearing cylinder 15 and is coaxial with the sand hole.

[0046] In the present utility model, Figure 3 As shown, the sand cylinder structure includes an upper pressure cylinder 14 and a lower pressure cylinder 15 with different diameters, and the upper pressure cylinder 14 and the lower pressure cylinder 15 partially overlap; the upper pressure cylinder 14 is a concrete structure, and the lower pressure cylinder 15 is filled with sand. When it is necessary to adjust the height, turn on the corresponding switch to release the sand, that is, unscrew the nut on the lower side wall of the lower pressure cylinder 15, so that the sand in the lower pressure cylinder 15 slowly flows out from the sand hole under the pressure of the upper pressure cylinder 14. After it is lowered to the required position, stop releasing the sand and continue to tighten the nut on the lower side wall of the lower pressure cylinder 15. In this way, the entire support remains stable after the height is lowered.

[0047] Preferably, the cap beam 6 is a cubic frame.

[0048] Preferably, the steel pipe column bracket includes a steel pipe column 2, a flat joint 8 and a diagonal brace 9. There are multiple steel pipe columns 2, and two adjacent steel pipe columns 2 are connected horizontally through a flat joint 8 and a diagonal brace 9; the longitudinal sections of the steel pipe columns 2 are connected through flanges 10 and bolts.

[0049] In the present invention, the main truss 3 and the steel pipe column 2 are detachably connected by a flange 10; the height adjustment member 4 and the steel pipe column 2 are detachably connected; the parallel joint 8 and the diagonal brace 9 are detachably connected to the steel pipe column 5.

[0050] Preferably, the main truss 3 includes two single trusses and a tension rod 7 . The two single trusses are arranged in parallel, respectively placed on both sides of the cap beam 6 , and connected by the tension rod 7 .

[0051] Preferably, the tie rod 7 is made of precision-rolled threaded steel.

[0052] In the present invention, the two single trusses of the main truss 3 are fixed to the pier body by pulling the tension rod 7, which greatly increases the stability of the main truss 3. When dismantling, it is only necessary to manually pull out the tension rod, which is convenient and quick.

[0053] The main truss 3 uses high-quality rolled threaded steel bars as tie rods 7, which increases the lateral structural stability of the cap beam 6 bracket and meets the requirements of large-scale bridge cap 6 construction.

[0054] Preferably, the single truss includes an upper chord 11 , a lower chord 12 and a web tie rod 13 . The upper chord 11 and the lower chord 12 are arranged in parallel up and down, and are connected by the web tie rod 13 .

[0055] Preferably, the length of the upper chord 11 is greater than that of the lower chord 12 .

[0056] In the present utility model, Figure 4As shown, the single truss includes a top chord 11, a bottom chord 12, and a web tie 13. The top chord 11 and bottom chord 12 are arranged parallel to each other and connected by the web tie 13. The two ends on the same side of the top chord 11 and bottom chord 12 are connected by a connecting diagonal rod. The single truss is an isosceles trapezoidal shape. The angle between the top chord 11 and the horizontal plane is calculated in advance according to site requirements, and the dimensions of the top chord 11, bottom chord 12, and web tie 13 are determined based on the calculation results. The web tie 13 is arranged perpendicular to the top chord 11 and bottom chord 12. X-shaped tension rods are installed within the rectangular frame formed by the web tie 13, the top chord 11, and the bottom chord 12 to enhance the overall strength of the single truss.

[0057] like Figure 5 As shown, the flange 10 includes a flange steel plate and a flange stiffener. The flange steel plate is annularly sleeved on the steel pipe pile, and the flange stiffeners are evenly distributed on the flange steel plate, thereby improving the connection strength of the flange steel plate.

[0058] like Figure 6 As shown, a steel pipe is pre-buried on the concrete strip foundation 1, and a flange 10 is sleeved on the pre-buried steel pipe. The flange 10 is detachably connected to the bottom of each steel pipe column 2 of the steel pipe column bracket, which is convenient for installation and disassembly and easy for assembly.

[0059] The working process of this utility model is as follows:

[0060] Before use, the concrete strip foundation 1, steel pipe column bracket and main truss 3 are processed separately in the back field, and then the steel pipe column 2 on the steel pipe column bracket is connected to the concrete strip foundation 1 through the flange 10 according to the design size. After determining the height of the cap beam 6, the main truss 3 and the steel pipe column 2 are connected through the flange 10 to provide vertical force for the cap beam 6 construction bracket to prevent the cap beam 6 bracket from sinking; finally, the cap beam formwork support system (transverse distribution beam, longitudinal load-bearing beam) 5 is installed through the height adjustment part 4, assembled into the cap beam 6 construction bracket, and the cap beam 5 construction is carried out.

[0061] During the construction process, the cap beam formwork support frame 5 (the cap beam formwork support frame 5 includes a transverse distribution beam and a longitudinal load-bearing beam) is used to provide a working platform for the pouring of the cap beam 6. The steel pipe column support is used to ensure the force stability and structural safety of the cap beam 6 and the cap beam formwork support frame 5 when they are dropped through the height adjustment member 4 during the pouring construction of the cap beam 6.

[0062] After the construction is completed, after the concrete pouring of the cap beam 6 is completed and the conditions for demolding are met, the cap beam formwork support frame 5 is dropped through the height adjustment member 4, and is removed in sequence from top to bottom and moved to the next cap beam 6 construction site.

[0063] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0064] It should also be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0065] The above examples are merely illustrative of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention falls within the scope of protection of the present invention. The device structures and method steps not described in detail in the present invention are prior art and will not be further described in the present invention.

Claims

1. An assembled cap beam construction support, characterized by: It comprises a main truss (3), a height adjustment member (4), a cap beam formwork support frame (5), a cap beam (6), a steel pipe column support and a concrete strip foundation (1), wherein the lower end of the main truss (3) is connected to the concrete strip foundation (1) through the steel pipe column support; the lower end of the steel pipe column support is connected to the concrete strip foundation (1) through a flange (10), and the upper end of the steel pipe column support is detachably connected to the main truss (3) through the flange (10); the lower end of the height adjustment member (4) is connected to the main truss (3), and the upper end is connected to the cap beam formwork support frame (5); the cap beam (6) is arranged on the cap beam formwork support frame (5) on the main truss (3).

2. The assembled cap beam construction support according to claim 1, characterized in that: The height adjustment member (4) is a sand cylinder structure, which includes an upper pressure cylinder (14) and a lower pressure cylinder (15). The lower end of the upper pressure cylinder (14) is located in the lower pressure cylinder (15). The lower pressure cylinder (15) below the lower end surface of the upper pressure cylinder (14) is filled with sand. Switches (16) are correspondingly provided on both sides of the lower part of the lower pressure cylinder (15).

3. The assembled cap beam construction support according to claim 2, characterized in that: The switch (16) comprises a sand hole provided on the lower side wall of the lower pressure-bearing cylinder (15), a nut and a bolt provided outside the sand hole, and the nut is tightened on the side wall of the lower pressure-bearing cylinder (15) and is coaxial with the sand hole.

4. The assembled cap beam construction support according to claim 1, characterized in that: The cap beam (6) is a cubic frame.

5. The assembled cap beam construction support according to claim 1, characterized in that: The steel pipe column bracket comprises a steel pipe column (2), a flat joint (8) and a diagonal brace (9). There are multiple steel pipe columns (2), and two adjacent steel pipe columns (2) are connected horizontally by a flat joint (8) and a diagonal brace (9); the longitudinal sections of the steel pipe columns (2) are connected by flanges (10) and bolts.

6. The assembled cap beam construction support according to claim 1, characterized in that: The main truss (3) comprises two single trusses and a tension rod (7). The two single trusses are arranged in parallel, respectively placed on both sides of the cap beam (6), and connected by the tension rod (7).

7. The assembled cap beam construction support according to claim 6, characterized in that: The single truss comprises an upper chord (11), a lower chord (12) and a web tie rod (13); the upper chord (11) and the lower chord (12) are arranged parallel to each other and are connected via the web tie rod (13).

8. The assembled cap beam construction support according to claim 7, characterized in that: The length of the upper chord (11) is greater than that of the lower chord (12).

9. The assembled cap beam construction support according to claim 7, characterized in that: The tie rod (7) is a finish-rolled threaded steel bar.

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