Bent cap assembly type formwork capable of being integrally hoisted and disassembled in half range

Abstract

The utility model discloses a bent cap assembly type formwork capable of being integrally hoisted and detached in a half-range mode, which comprises a hoop triangular bracket, two half-range assembly type bottom formwork bodies and two half-range assembly type side formwork bodies, and the hoop triangular bracket is fixed at a set elevation position of a pier column through a steel bar and hooped on the pier column; the two half-range assembly type bottom formwork bodies are arranged on the hoop triangular bracket in a supported mode through unloading devices and integrally locked through bottom pull rods. The side mold frames are installed on the bottom mold frame, and upper pull rods are oppositely pulled and locked on the side mold frames on the two sides. According to the bent cap assembly type formwork, the assembly type formwork components are adopted, the universality and the utilization rate of the formwork are improved, the bent cap formwork can be locally and integrally mounted and dismounted, tedious sequential high-altitude mounting and dismounting of formwork single components in traditional construction are avoided, the high-altitude work amount of personnel is reduced, the high-altitude work risk is reduced, and the construction intelligence is improved; the operation efficiency of the hoisting equipment is improved, the construction efficiency is improved, and the construction cost of the bent cap is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bent cap mould frame, and specifically relates to a bent cap assembly type mould frame of half-width integral lifting and disassembly. BACKGROUND

[0002] In bridge engineering, the bent cap is a key bearing structure at the top of the pier column and plays an important role in transferring the upper load to the lower structure. At present, the bent cap construction mainly adopts two mainstream technologies, i.e. the hoop method and the through rod method. Although these two methods meet the engineering requirements to some extent, they still have significant technical limitations in key construction links such as mould frame installation and disassembly. The existing mainstream bent cap mould frame construction system is composed of combined steel, which has good bearing performance. However, the large weight and bulky volume of the combined steel system bring many challenges to high-altitude work. The existing bent cap mould frame construction system requires the connection and disconnection of each rod one by one. In the space-limited high-altitude working environment, workers have to spend a lot of time on tedious mould frame disassembly and assembly, which not only seriously affects the construction progress but also causes many safety hazards. With the continuous extension of the construction period, the project cost is also greatly increased. The traditional construction mode dominated by manual operation obviously cannot meet the high standards of construction efficiency, safety and economy in modern bridge engineering. In view of this situation, it is urgent to develop a bent cap assembly type mould frame which is easy to construct. SUMMARY

[0003] The utility model aims at the problems existing in the prior art and provides a bent cap assembly type mould frame of half-width integral lifting and disassembly. The bent cap assembly type mould frame of half-width integral lifting and disassembly adopts an assembly type formwork component, improves the versatility and utilization rate of the formwork, and can be locally and integrally installed and disassembled, thereby avoiding the tedious sequential high-altitude installation and disassembly of the formwork single component in traditional construction, reducing the amount of high-altitude work of personnel, reducing the risk of high-altitude work, improving the construction intelligence, improving the operation efficiency of hoisting equipment, improving the construction efficiency, and reducing the construction cost of the bent cap.

[0004] The utility model is implemented by the following technical scheme:

[0005] A bent cap assembly type mould frame of half-width integral lifting and disassembly, wherein the bent cap assembly type mould frame comprises a hoop triangular bracket, two half-width assembly type bottom mould frames and side mould frames, the hoop triangular bracket is fixed on the pier column at a set elevation position by a steel rod and is hooped on the pier column, the two half-width assembly type bottom mould frames are respectively supported on the hoop triangular bracket by unloading devices, and the two half-width assembly type bottom mould frames are integrally locked by a bottom pull rod; the side mould frames are installed on the bottom mould frames, and the opposite side mould frames are locked by upper pull rods.

[0006] Further preferably, the said hoop triangular bracket is composed of two half hoop triangular brackets, each of which comprises a hoop, an inclined rod, a vertical rod and an upper chord, the inclined rod being connected with the vertical rod and the upper chord in a triangular shape, the upper and lower ends of the vertical rod being connected with the hoop respectively, and the bottom end of the vertical rod being supported on a steel bar; the hoops of the two half hoop triangular brackets are connected in a ring shape by bolts for the hoop to be placed on the pier column.

[0007] Further preferably, a traction device is installed on the upper chord of the said hoop triangular bracket, and a slide rail is arranged on the upper chord. The traction device is a winch, and the steel wire rope of the winch is connected with a slide shoe or a bottom mold frame.

[0008] Further preferably, a pull rod is arranged between the bolt fastening point of the hoop at the upper end of the vertical rod and the upper chord. The pull rod is used to constrain the horizontal force generated during the pouring of the bent cap, so as to avoid the lateral instability of the hoop triangular bracket.

[0009] Further preferably, a dismounting device for adjusting the height of the bottom mold frame is arranged above the connecting node of the upper chord and the hoop. The dismounting device is a commonly used adjusting device in the construction industry, which can be purchased and installed for use.

[0010] Further preferably, the bottom mold frame comprises a main distribution beam, a secondary distribution beam and a bottom mold plate, the bottom of the main distribution beam is provided with a slide shoe which is slidingly installed on the slide rail of the upper chord, the secondary distribution beam is fixed on the main distribution beam, the bottom mold plate is installed on the secondary distribution beam, and a bottom pull rod is arranged between the two half-width assembled bottom mold frames.

[0011] Further preferably, the side mold frame comprises a side mold plate and a lateral moving device, the lateral moving device is fixedly installed on the bottom mold frame, the lateral moving device is connected with the back ledge of the side mold plate, the side mold plate is driven to move laterally to the designated position by the lateral moving device, the splicing of the side mold plate and the bottom mold plate is completed, and an upper pull rod is arranged between the side mold plates on both sides. The lateral moving device adopts an electric push rod which is installed on the secondary distribution beam or the bottom mold plate, and the piston rod of the electric push rod is connected with the back ledge of the side mold plate through an inclined support rod. The bottom elevation of the side mold plate is lower than the elevation of the bottom mold plate by more than 10 cm, so as to ensure that the side mold plate can be tightly spliced with the bottom mold plate.

[0012] Further preferably, the back ledge of the side mold plate and the secondary distribution beam of the bottom mold frame are provided with a pin box device, and the connection and fixation of the side mold plate and the bottom mold plate are completed by the pin box device. The pin box device adopts a sliding groove and pin shaft connection structure, the sliding groove is arranged on the secondary distribution beam, the bottom end of the back ledge of the side mold plate is slidingly installed in the sliding groove, the bottom ends of the sliding groove and the back ledge are respectively provided with pin holes, and a pin shaft is arranged in the pin holes to pin and fix the bottom ends of the sliding groove and the back ledge.

[0013] Further preferably, a safety guardrail is arranged on the outer periphery of the bottom mold frame to ensure the safety of the high-altitude operation of the bent cap.

[0014] The half-span integral hoisting and dismounting cap beam assembly type formwork has the following advantages:

[0015] 1. The half-span integral hoisting and dismounting cap beam assembly type formwork can adopt an assembly type formwork component, can be integrally assembled on the ground through a hoop triangular bracket, and can be integrally lowered from the pier top by using hoisting equipment, and is placed on a steel rod. The effective combination of the hoop and the steel rod solves the problems of high risk of installation and dismounting and difficulty in guaranteeing quality precision in the traditional high-altitude dispersed assembly of the hoop bracket.

[0016] 2. The bottom formwork can be pre-assembled on the ground and then hoisted and dismounted in half spans to the hoop triangular bracket, thereby avoiding high-altitude assembly operation of heavy combined steel and greatly reducing high-altitude operation time.

[0017] 3. The bottom formwork can be lowered in elevation through a hoop node place dismounting device, and the traction equipment on the hoop triangular bracket is started to move the sliding shoe, so that the frame body is separated and integrally hoisted away. Compared with the conventional construction method of installation and dismounting of formwork blocks and components, the hoisting work amount is reduced, the support dismounting efficiency is effectively improved, and the dismounting process is safe, efficient and controllable.

[0018] 4. The bottom formwork and the side formwork are connected into a truss structure through a horizontal movement device and a pin box device, forming a stable structure composed of formwork stringers, distribution beams, back strakes and upper connecting rods, and the high-altitude installation and dismounting of the traditional construction of the formwork single component are avoided, the high-altitude operation amount of personnel is reduced, and the high-altitude operation risk is reduced.

[0019] 5. The design side formwork and the bottom formwork adjustable connection node are suitable for the cap beam and the tie beam, and are suitable for cap beams and tie beams of different widths, thereby expanding the use range of the formwork. DETAILED DESCRIPTION

[0020] Figure 1 FIG. 1 is a structural schematic view of a half-span integral hoisting and dismounting cap beam assembly type formwork from a first perspective;

[0021] Figure 2 FIG. 2 is a structural schematic view of the half-span integral hoisting and dismounting cap beam assembly type formwork from a second perspective;

[0022] Figure 3 FIG. 3 is a structural schematic view of the half-span integral hoisting and dismounting cap beam assembly type formwork from a third perspective;

[0023] Figure 4 FIG. 4 is a schematic view of the installation structure of a hoop triangular bracket;

[0024] Figure 5 FIG. 5 is a structural schematic view of a bottom formwork;

[0025] The component names corresponding to the serial numbers in the figure are:

[0026] 1. Steel bar; 2. Clamping triangular bracket; 3. Bottom formwork frame; 4. Side formwork frame; 5. Safety guardrail; 20. Clamping rod; 21. Diagonal brace; 22. Vertical bar; 23. Top chord; 24. Traction device; 25. Slide rail; 26. Tie rod; 27. Bolt; 30. Main distribution beam; 31. Secondary distribution beam; 32. Bottom formwork; 33. Slipper; 34. Bottom tie rod; 35. Unloading device; 40. Side formwork; 41. Back rib; 42. Lateral moving device; 43. Top tie rod; 44. Pin box device. Detailed Implementation

[0027] The technical solutions of the invention will be clearly and completely described below with reference to the embodiments. The described embodiments are only a part of the present utility model, and not all of the embodiments.

[0028] Example 1

[0029] A type of prefabricated formwork for a cap beam that can be dismantled as a whole in half, comprising a clamping triangular bracket 2, two half-width prefabricated bottom formwork frames 3, and side formwork frames 4. The clamping triangular bracket 2 is fixed to the pier column at a set elevation position by steel bars 1 and clamps onto the pier column. The two half-width prefabricated bottom formwork frames 3 are respectively supported on the clamping triangular bracket 2 by unloading devices 35, and the two half-width prefabricated bottom formwork frames 3 are locked together by bottom tie rods 34. The side formwork frames 4 are installed on the bottom formwork frames 3, and the two side formwork frames 4 are locked together by upper tie rods 43.

[0030] The clamp triangular bracket 2 is composed of two half clamp triangular brackets assembled together. Each half clamp triangular bracket includes a clamp 20, a diagonal rod 21, a vertical rod 22, and an upper chord rod 23. The diagonal rod 21 is connected to the vertical rod 22 and the upper chord rod 23 in a triangular shape. The upper and lower ends of the vertical rod 22 are respectively connected to the clamp 20, and the bottom end of the vertical rod 22 is supported on the steel rod 1. The clamps 20 of the two half clamp triangular brackets are connected in a ring shape by bolts 27 for clamping onto the pier column.

[0031] A traction device 24 is installed on the upper chord 23 of the clamp triangular bracket 2, and a slide rail 25 is provided on the upper chord 23. The traction device 24 is a winch, and the wire rope of the winch is connected to the sliding shoe 33 or the bottom formwork frame 3.

[0032] A tie rod 26 is provided between the bolt fastening point of the clamp 20 at the upper end of the vertical rod 22 and the upper chord 23. The tie rod 26 is used to restrain the horizontal force generated during the pouring of the cap beam and to prevent the clamp triangular bracket from becoming laterally unstable.

[0033] A dropping device 35 for adjusting the height of the bottom mold frame 3 is provided above the connection node between the upper chord rod 23 and the clamp 20.

[0034] The bottom formwork frame 3 includes a main distribution beam 30, a secondary distribution beam 31, and a bottom formwork 32. The bottom of the main distribution beam 30 is provided with a sliding shoe 33, which is slidably installed on the slide rail 25 of the upper chord 23. The secondary distribution beam 31 is fixed on the main distribution beam 30, and the bottom formwork 32 is installed on the secondary distribution beam 31. A bottom tie rod 34 is provided between the two half-width assembled bottom formwork frames 3.

[0035] The side formwork frame 4 includes a side template 40 and a transverse moving device 42. The transverse moving device 42 is fixedly installed on the bottom formwork frame 3 and is connected to the back rib 41 of the side template 40. The side template 40 is driven by the transverse moving device 42 to move laterally to a designated position, completing the assembly of the side template 40 and the bottom formwork 32. Upper tie rods 43 are installed between the two side templates 40. The transverse moving device 42 is an electric push rod, which is installed on the secondary distribution beam 31 or the bottom template 32. The piston rod of the electric push rod is connected to the back rib of the side template through a diagonal brace. The bottom elevation of the side template is at least 3 cm lower than the elevation of the bottom template to ensure a tight assembly between the side template and the bottom template.

[0036] The secondary distribution beam 31 of the bottom formwork frame 3 and the back rib 41 of the side formwork 40 are equipped with pin box devices 44, which are used to connect and fix the side formwork 40 and the bottom formwork 32. The pin box device 44 adopts a sliding groove and pin connection structure. The sliding groove is set on the secondary distribution beam 31, and the bottom end of the back rib 41 of the side formwork 40 is slidably installed in the sliding groove. The bottom ends of the sliding groove and the back rib 41 are respectively provided with pin holes, and pins are inserted into the pin holes to pin and fix the bottom ends of the sliding groove and the back rib 41.

[0037] Safety guardrails 5 are installed on the outer periphery of the bottom formwork frame 3 to ensure the safety of high-altitude operations on the cap beam.

[0038] The construction of the prefabricated formwork for the cap beam includes the following steps:

[0039] S1. Reference Figure 1 , Figure 2 and Figure 4 The clamp triangular bracket 2 is pre-tightened on the ground, and the clamp triangular bracket 2 is fully mounted on the pier using hoisting equipment and fixed at the set elevation position of the pier by steel rod 1.

[0040] S2. Reference Figure 2 and Figure 5 The bottom formwork frame 3 is hoisted onto the clamping triangular bracket 2 using hoisting equipment. The elevation of the bottom formwork frame 3 is adjusted by the unloading device 35. The two half-width assembled bottom formwork frames 3 are locked together by the bottom tie rod 34.

[0041] S3. Reference Figure 3 , Figure 5After the reinforcement is tied, the side formwork 4 is hoisted onto the bottom formwork 3 using hoisting equipment. The horizontal moving equipment 42 is started to move the side formwork 40 into position. The side formwork 40 is spliced ​​with the bottom formwork 32 using the pin box device 44 node connection, and the upper tie rod 43 is locked to fix the side formwork 40. The cap beam concrete is then poured.

[0042] S4. After the cap beam concrete reaches the set age, the formwork is dismantled. First, the upper tie rod 43 is removed, the pin box device 44 is separated, and the connection between the side formwork 40 and the bottom formwork 32 is released. The horizontal moving equipment 42 is started to separate the side formwork 40 from the cap beam concrete. The side formwork 4 is then lifted off the bottom formwork 3 using hoisting equipment.

[0043] S5. Remove the bottom tie rod 34 of the bottom formwork frame 3, disconnect the connection between the two half-width prefabricated bottom formwork frames 3, lower the elevation of the bottom formwork frame 3 through the unloading device 35, and realize the separation of the bottom formwork 32 from the cap beam concrete; finally, start the traction device 24 on the clamp triangular bracket 2, pull the sliding shoe 33 at the bottom of the bottom formwork frame 3 on the slide rail 25, slide the bottom formwork frame 3 horizontally along the outside to outside the horizontal projection range of the cap beam, and use a crane to lift the half-width formwork frame as a whole away.

[0044] S6. Use hoisting equipment to suspend half of the clamp triangular bracket 2, and suspend the other half of the clamp triangular bracket 2 on the cap beam. Finally, loosen the clamp 20 bolts 27 and lift the two half of the clamp triangular bracket 2 and the steel bar 1 off the pier.

[0045] The above description is not intended to limit the present utility model, nor is the present utility model limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A prefabricated formwork for a cap beam that can be dismantled as a whole in half, characterized in that: The prefabricated formwork for the cap beam includes a clamp triangular bracket (2), two half-width prefabricated bottom formwork frames (3) and a side formwork frame (4). The clamp triangular bracket (2) is fixed to the pier column at the set elevation position by steel rods (1) and clamped to the pier column. The two half-width prefabricated bottom formwork frames (3) are respectively supported on the clamp triangular bracket (2) by unloading devices (35). The two half-width prefabricated bottom formwork frames (3) are locked together by bottom tie rods (34). The side formwork frame (4) is installed on the bottom formwork frame (3), and the two side formwork frames (4) are locked together by upper tie rods (43).

2. The prefabricated formwork for the cap beam that is dismantled in half as a whole according to claim 1, characterized in that: The clamp triangular bracket (2) is composed of two half clamp triangular brackets. The half clamp triangular bracket includes a clamp (20), a diagonal rod (21), a vertical rod (22), and an upper chord rod (23). The diagonal rod (21) is connected to the vertical rod (22) and the upper chord rod (23) in a triangular shape. The upper and lower ends of the vertical rod (22) are respectively connected to the clamp (20). The bottom end of the vertical rod (22) is supported on the steel rod (1). The clamps (20) of the two half clamp triangular brackets are connected in a ring shape by bolts (27) for clamping on the pier column.

3. The prefabricated formwork for the cap beam that is dismantled in half as a whole according to claim 2, characterized in that: A traction device (24) is installed on the upper chord (23) of the clamp triangular bracket (2), and a slide rail (25) is set on the upper chord (23).

4. The prefabricated formwork for the cap beam that is dismantled as a whole in half as described in claim 2, characterized in that: A tie rod (26) is provided between the bolt fastening point of the clamp (20) at the upper end of the vertical rod (22) and the upper chord (23).

5. The prefabricated formwork for the cap beam that is dismantled in half as a whole according to claim 2, characterized in that: A dropping device (35) for adjusting the height of the bottom mold frame (3) is provided above the connection node between the upper chord (23) and the clamp (20).

6. The prefabricated formwork for the cap beam that is dismantled in half as a whole according to claim 1, characterized in that: The bottom formwork frame (3) includes a main distribution beam (30), a secondary distribution beam (31), and a bottom template (32). The bottom of the main distribution beam (30) is provided with a sliding shoe (33), which is slidably installed on the slide rail (25) of the upper chord (23). The secondary distribution beam (31) is fixed on the main distribution beam (30), and the bottom template (32) is installed on the secondary distribution beam (31). A bottom tie rod (34) is provided between the two half-width assembled bottom formwork frames (3).

7. The prefabricated formwork for the cap beam that is dismantled in half as a whole according to claim 1, characterized in that: The side mold frame (4) includes a side template (40) and a horizontal moving device (42). The horizontal moving device (42) is fixedly installed on the bottom mold frame (3). The horizontal moving device (42) is connected to the back rib (41) of the side template (40). The side template (40) is driven to move laterally to the designated position by the horizontal moving device (42) to complete the splicing of the side template (40) and the bottom template (32). The two side templates (40) are provided with upper tie rods (43).

8. The prefabricated formwork for the cap beam that is dismantled in half as a whole according to claim 7, characterized in that: The secondary distribution beam (31) of the bottom formwork frame (3) and the back rib (41) of the side formwork (40) are equipped with pin box devices (44), and the side formwork (40) and the bottom formwork (32) are connected and fixed by the pin box devices.

9. The prefabricated formwork for split-span integral lifting and dismantling of cap beams according to any one of claims 1, 7, or 8, characterized in that: Safety guardrails (5) are provided on the outer periphery of the bottom mold frame (3).

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