Bridge bent cap safety construction device

Abstract

The application discloses a bridge bent cap safety construction device, which comprises a plurality of hoop pieces connected in sequence and a closed operation table connected to the hoop pieces in a detachable mode, and the two ends of the closed operation table are hung on two adjacent hoop pieces, so that the joint of the two adjacent hoop pieces is located in the region of the closed operation table, the hoop pieces can be locked by the operator conveniently, the operator is located in the closed operation table, the height measurement during the hoop installation process is facilitated, and the unloading block can be adjusted conveniently, the safety and convenience of the operator during construction are improved, the problem that no reliable operation platform can be provided for the hoop construction when the support method cannot be adopted due to insufficient bearing capacity of the foundation during the bridge bent cap construction is solved, and reliable safety technical support is provided for the hoop construction.

Description

Technical Field

[0001] This invention relates to the field of bridge construction, and in particular to a safe construction device for bridge cap beams. Background Technology

[0002] The cap beam is placed horizontally between the piers to connect the piers into a whole to support the superstructure and transfer all the load to the substructure. Common methods in the construction of bridge cap beams and tie beams include full-span scaffolding, reduced scaffolding, clamping, or through-steel bar method.

[0003] The full-span scaffolding method and the partial scaffolding method have high requirements for the foundation and usually require foundation treatment. They are often used when the piers are relatively short. For high piers, the through-core steel bar method and the clamp method are often used. Because the piers are densely reinforced, the through-core steel bar method usually damages the main reinforcement or causes the reinforcement to shift. The clamp method uses the friction between the clamp and the pier to support the superstructure. However, because the clamp requires tightening the bolts and adjusting the elevation of the upper steel scaffolding, there is usually no reliable operating platform, which makes it more dangerous.

[0004] Currently, there is a lack of design for personnel operating platforms in the clamping method of construction, which makes it difficult to install and dismantle the clamps. It also makes it difficult to measure the elevation and adjust the unloading blocks on the clamp brackets during the clamping process. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a safe construction device for bridge cap beams, providing a safe and reliable detachable operating platform for clamp construction, thereby solving the problem of the lack of a safe operating platform for construction personnel using the clamp method for high pier cap beams, and facilitating the installation of clamps and the placement and adjustment of the upper unloading blocks.

[0006] This invention is achieved through the following technical solution:

[0007] A safety construction device for bridge cap beams includes an enclosed operating platform and multiple clamping plates;

[0008] The multiple clamping plates are connected end to end in sequence to form a circumferentially closed clamping body. The clamping body can be fixed to the outer wall of the pier by friction. The enclosed operating platform is detachably connected to the two adjacent clamping plates through a hook-and-connect device. The enclosed operating platform is used to support construction personnel and construction equipment.

[0009] Preferably, the clamping plate has an arc-shaped structure, and two adjacent clamping plates are pre-connected by a fastening device. The diameter of the clamping body formed by the pre-connection of multiple clamping plates is larger than the diameter of the pier column.

[0010] Preferably, the clamp plate has brackets at both ends, one end of the bracket is connected to the end of the clamp plate, and the other end extends outward along the radial direction of the pier column. The brackets of two adjacent clamp plates are connected by a fastening device.

[0011] Preferably, the mounting device includes a slot and a plate. The slot is formed on the outer wall of the clamping plate, and the plate is disposed at the upper end of the enclosed operating table. The plate can be inserted into the slot.

[0012] Preferably, the width of the slot is greater than the width of the insert plate.

[0013] Preferably, a fixing plate is provided on the outer wall of the clamping plate, and the two sides of the fixing plate are fixedly connected to the clamping plate, with the slot located between the fixing plate and the clamping plate.

[0014] Preferably, the clamp plate has brackets at both ends, and slots are provided at both ends of the clamp plate, with the two slots located between the two brackets.

[0015] Preferably, the enclosed operating platform is a hanging basket with an open top.

[0016] Preferably, the bottom of the hanging basket is covered with a walkway slab, and the walkway slab is provided with friction texture.

[0017] Preferably, the clamp body is provided with a load-bearing block.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] This invention provides a safe construction device for bridge cap beams, comprising a clamping component formed by sequentially connecting multiple clamping plates end to end, and a closed operating platform detachably connected to the clamping component. The two ends of the closed operating platform are hooked onto adjacent clamping plates, ensuring the joint between adjacent clamping plates is located within the closed operating platform area. This facilitates the operator's locking of the clamping plates. Simultaneously, the operator, positioned within the closed operating platform, can easily measure the elevation during clamping installation and adjust the unloading blocks. This construction device improves the safety and convenience of the operator, solving the problems of insufficient foundation bearing capacity in bridge cap beam construction when using the scaffolding method and the lack of a reliable operating platform when using clamping construction, thus providing reliable safety technical support for clamping construction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the clamp bracket of the present invention;

[0021] Figure 2 This is a top view of the clamp bracket of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the hanging basket of the present invention.

[0023] In the diagram: 1-First clamp plate, 2-Second clamp plate, 3-First hanging basket, 4-Second hanging basket, 5-Lifting lug, 6-Slot, 7-Insertion plate, 8-Corner, 9-High-strength bolt, 10-Inner vertical reinforcement, 11-Inner horizontal reinforcement, 12-Bottom radial support, 13-Bottom horizontal support, 14-Outer vertical enclosure, 15-Outer horizontal enclosure, 16-Diagonal tie. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These descriptions are intended to explain the invention and not to limit it.

[0025] See Figure 1-3 A safety construction device for bridge cap beams includes an enclosed operating platform and multiple clamping plates; the multiple clamping plates are connected end to end in sequence to form a circumferentially enclosed clamping body, which can be fixed to the outer wall of the pier by friction. The enclosed operating platform is connected to the clamping body and is used to support construction personnel and construction equipment.

[0026] The clamping plate has an arc-shaped structure, and its curvature matches the outer wall of the pier. Adjacent clamping plates are pre-connected by a fastening device. The diameter of the clamping body formed by the pre-connection of multiple clamping plates is larger than the diameter of the pier it encircles, which makes it easy to put the clamping body on the upper end of the pier. The upper end of the clamping body is provided with a load-bearing block, and the top of the load-bearing block is used to support the steel formwork support system.

[0027] The clamp plate has brackets 8 at both ends. One end of the bracket is connected to the end of the clamp plate, and the other end extends outward along the radial direction of the pier. The brackets of two adjacent clamp plates are connected by a fastening device, which is a high-strength bolt 9. The bracket has multiple bolt holes, and the high-strength bolt 9 passes through the bolt holes to connect two adjacent clamp plates.

[0028] In this embodiment, there are two clamping plates, namely the first clamping plate 1 and the second clamping plate 2. The two clamping plates have the same structure and are symmetrically arranged along their center. They are connected as a whole by high-strength bolts 9 and surround the pier column. The pressure provided by tightening the bolts creates a vertical frictional force between the pier column and the clamping plate to balance the load of the superstructure.

[0029] The enclosed operating platform is detachably connected to the outer wall of the clamp plate via a hook-on device. The hook-on method facilitates the assembly and disassembly of the enclosed operating platform and the clamp plate. The hook-on device includes a slot 6 and an insert plate 7. The slot 6 is formed on the outer wall of the clamp plate, and the insert plate 7 is located at the upper end of the enclosed operating platform. The insert plate 7 can be inserted into the slot to realize the connection between the enclosed operating platform and the clamp plate.

[0030] A fixing plate is provided on the outer wall of the clamp plate. The two sides of the fixing plate are fixedly connected to the clamp plate. A gap is provided between the fixing plate and the clamp plate, which serves as a slot 6. The insert plate 7 has an n-shaped structure. One end of the insert plate is fixedly connected to the upper end of the enclosed operating platform, and the other end is inserted into the slot. The width of the slot is greater than the width of the insert plate 7. When the clamp plate is fitted onto the pier in the pre-connected state, the two adjacent clamp plates are locked with high-strength bolts. At this time, the clamp plate will be displaced, and the insert plate 7 can move in the slot, which facilitates the tightening and unloading of the high-strength bolts 9. The hanging basket can be easily removed after installation.

[0031] In this embodiment, the fixing plate is a channel steel, and the two sides of the channel steel are fixed to the clamping plate by welding. Both ends of the clamping plate are provided with slots and located between the two brackets 8. The upper end of the enclosed operating platform is provided with two insert plates 7. The two insert plates are respectively fixed in the slots of the two adjacent clamping plates. At this time, the connection of the two adjacent clamping plates is located in the enclosed operating platform, which makes it convenient for the staff to lock the two clamping plates in the enclosed operating platform.

[0032] The enclosed operating platform is a top-opening hanging basket with a fan-shaped frame structure. Its inner wall includes multiple inner horizontal steel bars 11 arranged from top to bottom. The two ends of the multiple inner horizontal steel bars 11 are connected to the inner vertical steel bars 10 to form a protective inner wall. The insert plate is welded to the upper end of the protective inner wall. The protective inner wall mainly bears the load of the operating platform. The outer wall of the hanging basket includes multiple outer horizontal protective members 15 arranged from top to bottom. The multiple outer horizontal protective members 15 are welded and fixed to multiple outer vertical protective members 14 to form a protective outer wall. The two ends of the protective inner wall and the protective outer wall are connected by multiple diagonal tie members 16. The multiple diagonal tie members are arranged at intervals from top to bottom. The two ends of the diagonal tie members are welded to the two ends of the protective inner wall and the protective outer wall, respectively. The bottom of the hanging basket is formed by welding multiple bottom radial support members 12 and bottom horizontal support members 13. The bottom radial support members 12 are arranged radially, and the bottom horizontal support members are arranged circumferentially. The bottom edge of the hanging basket is welded and fixed to the lower end of the inner wall and the outer wall.

[0033] The bottom of the hanging basket is covered with a walkway slab, which has a friction texture to prevent slipping and improve the safety of operators walking. The clamp plate is equipped with lifting lugs 5 for easy lifting.

[0034] In this embodiment, there are two hanging baskets, namely the first hanging basket 3 and the second hanging basket 4. Each of the first and second hanging baskets can accommodate at least one person. Before construction, the first and second clamping plates are pre-connected using high-strength bolts 9, with appropriate gaps between the clamping plates to ensure that the clamps can be fitted onto the pier from the top. Before hoisting, construction workers enter the first and second hanging baskets 3 and 4. During hoisting, construction workers can use a prism to assist surveyors below in determining the clamping elevation. Once the clamping body reaches the specified elevation, construction workers promptly tighten the high-strength bolts 9. After all high-strength bolts 9 are tightened, the clamping plate is then tightened. Unloading blocks are placed on the legs and precisely adjusted to the design elevation with the help of surveyors. Then, the longitudinal beams are hoisted onto the unloading blocks. After the longitudinal beams are stable, the transverse beams are arranged. After the above procedures are checked and confirmed to be correct, the bottom formwork and side formwork of the cap beam can be installed and the construction of the cap beam can be completed. After the cap beam solidifies, the unloading blocks are unloaded. The formwork, transverse beams, longitudinal beams, clamps and hanging baskets are removed in sequence and reused in the next clamp body. Lifting lug 5 lifts the clamp and hanging basket as a whole when the clamp is installed or removed. The position is close to the corbel, which makes it convenient for the construction personnel to release the hook from the operating platform. Lifting lugs are also set on the hanging basket. The hanging basket lifting lugs are located at the four corners of a single hanging basket, which is conducive to the stability and firmness of the hoisting.

[0035] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A bridge bent safety construction device, characterized in that, The closed operating platform and the plurality of hoop pieces are connected in sequence to form a hoop body which can be fixed on the outer wall of the pier column by friction. The closed operating platform is detachably connected with the adjacent two hoop pieces by a hanging device. The hoop pieces are in arc structure and are pre-connected by a fastening device. The diameter of the hoop body formed by the plurality of hoop pieces is greater than the diameter of the pier column. The two ends of the hoop piece are provided with corbels.

2. The bridge bent cap safety construction device according to claim 1, characterized in that, The two ends of the hoop piece are provided with corbels.

3. The bridge bent cap safety construction device according to claim 1, characterized in that, The width of the slot is greater than the width of the insert plate.

4. The bridge bent cap safety construction device according to claim 1, characterized in that, The outer wall of the hoop piece is provided with a fixed plate.

5. The bridge bent cap safety construction device according to claim 1, characterized in that, The two ends of the hoop piece are provided with corbels.

6. The bridge bent cap safety construction device according to claim 5, characterized in that, The bottom of the hanging basket is paved with a walkway plate.

7. The bridge bent cap safety construction device according to claim 1, characterized in that, The hoop body is provided with unloading blocks. The closed operating platform is a hanging basket with an open top. The bottom of the hanging basket is paved with a walkway plate. The hoop body is provided with unloading blocks.

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