CN115450125A - High pier capping beam integrated construction platform installing and dismantling method - Google Patents

Abstract

The invention discloses a method for installing and dismantling a high pier-cover-beam integrated construction platform, belonging to the technical field of cover-beam construction, comprising the following steps: S1, leveling the ground at the bottom of a pier column; S2, installing a platform lifting device; S3, construction work platform S4, hoop installation; S5, platform lifting device removal; S6, cover beam construction; S7, platform lifting device reinstallation; S8, hoop removal; S9, construction work platform removal; S10, platform lifting device to dismantle. The installation and disassembly method of the high-pier-cover-beam integrated platform of the present invention ensures that the operating personnel are in a relatively safe position during the entire installation and disassembly process, and the safety is guaranteed. The installation quality and installation and disassembly speed of the construction work platform reduce the engineering cost.

Description

A method for installing and dismantling an integrated construction platform of high pier cover and beam

technical field

The invention belongs to the technical field of cover beam construction, and more specifically relates to a method for installing and dismantling a high pier cover beam integrated construction platform.

Background technique

As an important component of the bridge structure to support, distribute and transmit the load of the superstructure, the cap beam plays a role of connecting the preceding and the following in the entire bridge structure. The hoop method and the bracket method are two construction methods that are widely used in the current cap beam construction technology.

The hoop method is to install the hoop at the appropriate position on the pier column. After the hoop is installed, install the load-bearing beam, distribution beam, combined steel formwork, personnel operation pedal and safety guardrail in sequence. After the installation is completed, use it as a cover Work platform for beam construction. During the installation process of the entire construction work platform, limited by the construction process, the personnel operating pedals and safety guardrails need to be installed after the load-bearing beams and distribution beams are installed. There is a greater risk of falling from high places and being hit by objects when working without safety measures, especially when the cover beam is relatively high, this risk is more prominent. At the same time, during the installation of the high pier cover beam construction work platform, due to the high height of the cover beam, it is affected by various factors such as weather, machinery, and the psychological state of the operators, so the installation quality and installation speed of the construction work platform have to be limited. To a certain extent, it also increases the risk of working at heights.

The support method is to use steel pipes to set up a support, and a cover beam construction work platform is set up on the support. The construction of the bracket method generally has higher requirements on the bearing capacity of the foundation, and the treatment of the foundation requires more manpower and material resources. If the foundation is not handled properly, it may cause the support to sink as a whole or unevenly, which will seriously affect the construction safety and quality of the cover beam; Preloading to eliminate inelastic deformation and elastic deformation requires a lot of labor, manpower, and material resources, and the project cost is relatively high.

Contents of the invention

Aiming at the defects of the prior art, the purpose of the present invention is to provide a method for installing and dismantling an integrated platform of high pier and cover beams, which aims to solve the problems of high risk of high-altitude operations, low installation quality, and speed of disassembly and assembly during the construction process of existing high pier and cover beams. Slow and high engineering cost.

In order to achieve the above object, the present invention provides a method for installing and dismantling a high pier-cover-beam integrated construction platform, comprising the following steps:

S1. Level the ground at the bottom of the pier column;

S2. Installation of the platform lifting device: the platform lifting device includes a top load-bearing beam, a bottom load-bearing beam and an electric hoist. The electric hoist is installed on the top load-bearing beam for the top load-bearing beam and the bottom load-bearing beam respectively The connection and disassembly of the load-bearing beam and the hoop;

The top load-bearing beam is stably hoisted and fixed on the upper end of the pier column by the spreader, and the bottom load-bearing beam is connected with the top load-bearing beam through an electric hoist and is located on the ground at the bottom of the pier column;

S3. Assembly of the construction work platform: the construction work platform includes a main load-bearing beam horizontally placed on the bottom load-bearing beam, the length directions of the bottom load-bearing beam and the main load-bearing beam are perpendicular to each other, and the main load-bearing beam A distribution beam is connected between them, the distribution beam is located above the main load-bearing beam, and a personnel operation pedal is fixed above the distribution beam, and safety guardrails are provided around the personnel operation pedal;

S4. Hoop installation: The construction work platform is raised to the design elevation through the platform lifting device, the hoop is raised to the design elevation through the electric hoist, the hoop corbel is attached to the lower end surface of the main load-bearing beam and is tightly fixed to the outer wall of the pier column for Support construction work platform;

S5. Removal of the platform lifting device: the bottom load-bearing beam is lowered to the ground by the electric hoist and removed, and the top load-bearing beam is removed by the spreader;

S6. Covering beam construction: build the bottom formwork of the cover beam, and complete the construction of the cover beam;

S7. Reinstallation of the platform lifting device: the top load-bearing beam is placed on the top of the cover beam through the spreader, and the top load-bearing beam lifts the bottom load-bearing beam to the bottom of the construction work platform through the electric hoist;

S8. Removal of the hoop: transport the operator to the hoop removal position by the climbing car, and after the hoop is removed, lower the hoop to the ground through the electric hoist;

S9. Removal of the construction operation platform: the operator lowers the construction operation platform to the ground through the platform lifting device, and removes the main load-bearing beam, distribution beam, personnel operation pedal and safety guardrail;

S10. Re-removal of the platform lifting device: the operator removes the bottom load-bearing beam, uses a climbing vehicle to transport the operator to the removal position, removes the electric hoist and the top load-bearing beam, and uses a spreader to remove the removed electric hoist and the top load-bearing beam. Transport the load-bearing beam to the ground; repeat steps S1-S10 to complete the construction of the next cover beam.

Further, the four corners of the top load-bearing beam and the two ends of the bottom load-bearing beam are provided with lifting rings for installing electric hoists, and a detachable hanging plate is provided in the middle of the top load-bearing beam, and the detachable hanging plate is connected for The electric hoist with the hoop disassembled.

Furthermore, the S7 is specifically: after the detachable hanging plate is removed, the top load-bearing beam is placed on the top of the cover beam through a spreader, and one side of the top load-bearing beam is connected by an electric hoist and a hoop for removal of the hoop Lower to the ground; the other side of the top load-bearing beam is connected to the bottom load-bearing beam through two electric hoists to support the construction work platform when the hoop is removed.

Further, the step S3 includes:

S31. Install the main load-bearing beam: the main load-bearing beam is located on the bottom load-bearing beam and placed perpendicular to the length direction of the bottom load-bearing beam; distribution beams are evenly distributed on the main load-bearing beam, and the distribution beam is fixedly arranged vertically to the length direction of the main load-bearing beam;

S32. Fixed personnel operation pedal: the personnel operation pedal is fixed on the distribution beam;

S33. Installation of safety guardrails: fix safety guardrails around the personnel operation pedal.

Furthermore, the top load-bearing beam is king-shaped, and the bottom load-bearing beam is straight-shaped.

Furthermore, the top load-bearing beam cannot be placed stably due to the support pad stone or embedded parts on the top of the cover beam, and the top load-bearing beam can be replaced by two bottom load-bearing beams arranged in parallel.

Generally speaking, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

1. Through the platform lifting device, the installation and dismantling of the construction work platform can be carried out on the ground, and after the installation is completed, it can be lifted to the design elevation; the hoop can be installed and dismantled by the climbing car and the lifting device. During the whole installation and dismantling process, the operators are always in a relatively safe position, and the safety is guaranteed, which greatly reduces the risk of working at heights during the installation of the cover beam construction work platform;

2. In addition, the installation of the construction work platform on the ground can reduce the influence of various factors such as weather, machinery, and psychological conditions of the operators on the installation quality and installation and disassembly speed of the construction work platform, and improve the installation quality and installation and disassembly speed;

3. Moreover, the requirements for the bearing capacity of the foundation are small, and only the ground at the bottom of the pier column needs to be simply leveled, which saves manpower and material resources, and reduces the engineering cost.

Description of drawings

Fig. 1 is the structural representation of platform lifting device of the present invention;

Fig. 2 is the installation sketch map of construction operation platform of the present invention;

Fig. 3 is a schematic diagram of dismantling the construction work platform of the present invention.

The structures corresponding to the numbers in the drawings are: 1-top load-bearing beam, 2-detachable hanging plate, 3-hanging ring, 4-bottom load-bearing beam, 5-electric hoist, 6-construction work platform, 7-clamp hoop, 8-main load-bearing beam, 9-distribution beam, 10-safety guardrail, 11-personnel operation pedal, 12-cover beam base form, 13-pier column, 14-cover beam.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to Fig. 1 to Fig. 3, the present invention provides a method for installing and dismantling an integrated construction platform of high piers and cap beams, comprising the following steps:

S1, leveling the ground at the bottom of the pier column 13;

S2. Installation of platform lifting device: platform lifting device includes top load-bearing beam 1, bottom load-bearing beam 4 and electric hoist 5, electric hoist 5 is installed on top load-bearing beam 1, output end of electric hoist and bottom load-bearing beam 4, hoop 7 connection, used for the disassembly and assembly of the bottom load-bearing beam 4 and the hoop 7; the specific installation steps are: the top load-bearing beam 1 is stably hoisted on the upper end surface of the pier column 13 by the spreader and fixed, and the bottom load-bearing beam 4 is passed through the electric hoist 5 It is connected with the top load-bearing beam 1 and is located on the ground at the bottom of the pier column 13. In this embodiment, the top load-bearing beam 1 is king-shaped, and the bottom load-bearing beam 4 is in-line shape, and one top load-bearing beam corresponds to two bottom load-bearing beams.

S3. Assembly of the construction work platform: the construction work platform 6 includes a main load-bearing beam 8 placed horizontally on the bottom load-bearing beam 4, the length directions of the bottom load-bearing beam 4 and the main load-bearing beam 8 are perpendicular to each other, and the main load-bearing beams 8 pass through The distribution beam 9 is connected, and a personnel operation pedal 11 is fixed above the distribution beam 9, and a safety guardrail 10 is provided around the personnel operation pedal 11, and bolts, welding or other fixing measures are taken to form a whole; the specific assembly sequence is:

S31. Install the main load-bearing beam: the main load-bearing beam 8 is located on the bottom load-bearing beam 4 and placed perpendicular to the length direction of the bottom load-bearing beam 4; the distribution beam 9 is evenly distributed on the main load-bearing beam 8, and the distribution beam 9 is fixed vertically to the length direction of the main load-bearing beam 8 set up;

S32. Fixing the personnel operation pedal: the personnel operation pedal 11 is fixed on the distribution beam by means of welding or bolts;

S33. Installation of the safety guardrail: the personnel operation pedal 11 fixes the safety guardrail 10 by means of welding, bolts, etc.;

S4. Hoop installation: the construction work platform 6 is raised to the design elevation through the electric hoist 5, and the hoop 7 is also raised to the design elevation through the electric hoist 5, and the hoop corbel and the lower end surface of the main load-bearing beam 8 are attached and merged with the pier column 13 The outer wall is tightly fixed to support the construction work platform;

S5. Removal of the platform lifting device: the bottom load-bearing beam 4 is lowered to the ground by the electric hoist 5 and removed, and the top load-bearing beam 1 is removed by the spreader;

S6, cover beam construction; build cover beam bottom mold 12, finish cover beam 14 construction;

S7. Reinstallation of the platform lifting device; the top load-bearing beam 1 is placed on the top of the cover beam 14 through the spreader, and the top load-bearing beam 1 lifts the bottom load-bearing beam 4 to the bottom of the construction work platform 6 through the electric hoist 5;

S8. Removal of the hoop: transport the operator to the hoop removal position by the climbing car, and after the hoop is removed, lower the hoop to the ground through the electric hoist;

S9. Removal of the construction operation platform: the operator lowers the construction operation platform to the ground through the platform lifting device, and removes the main load-bearing beam, distribution beam, personnel operation pedal and safety guardrail;

S10. Re-removal of the platform lifting device: the operator removes the bottom load-bearing beam, uses a climbing vehicle to transport the operator to the removal position, removes the electric hoist and the top load-bearing beam, and uses a spreader to remove the removed electric hoist and the top load-bearing beam. Transport the load-bearing beam to the ground; repeat steps S1-S10 to complete the construction of the next cover beam.

In order to facilitate the disassembly and assembly of the electric hoist 5, the four corners of the top load-bearing beam 1 and the two ends of the bottom load-bearing beam 4 are all provided with lifting rings 3 for installing the electric hoist 5. The position is adjusted, so a detachable hanging plate 2 is provided in the middle of the top load-bearing beam 1, and the detachable hanging plate 2 is connected to the electric hoist used for the disassembly and assembly of the hoop 7, so the corresponding step S7 in this embodiment is specifically: After the hanging plate 2 is removed, the top load-bearing beam 1 is placed on the top of the cover beam 14 through a spreader, and one side of the top load-bearing beam 1 is connected by the electric hoist 5 and the hoop 7, which is used to remove the hoop 7 and lower it to the ground; The other side of the load-bearing beam 1 is connected to the bottom load-bearing beam 4 through two electric hoists 5 to support the construction work platform when the hoop is removed; The beam cannot be placed stably, the top load-bearing beam 1 can be replaced by two bottom load-bearing beams 4 arranged in parallel, and the direction of the lifting ring 3 is downward, as shown in Figure 3 .

The installation and disassembly method of the high pier cover beam integrated construction platform provided by the present invention, before installation, the ground at the bottom of the pier column is leveled, and then the entire construction platform is assembled on the flat ground, and then the entire construction operation platform is lifted by the platform lifting device to the design level and fixed with hoops. After the installation of the construction work platform is completed, the cover beam construction is carried out. After the construction of the cover beam is completed, the entire construction work platform is lowered to the ground at the bottom of the pier by using the platform lifting device again, and then the construction work platform is removed. During the whole installation and disassembly process, the operators are in a relatively safe environment. The location is safe and secure, which greatly reduces the risk of high-altitude operation during the installation of the cover beam construction work platform, and also greatly improves the installation quality and speed of installation and disassembly of the construction work platform, reducing time, manpower and material resources, etc. Cost input reduces engineering costs.

It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.

Claims (6)

1. A high pier capping beam integrated construction platform mounting and dismounting method is characterized by comprising the following steps:

s1, leveling the ground at the bottom of the pier stud;

s2, mounting a platform lifting device: the platform lifting device comprises a top bearing beam, a bottom bearing beam and an electric hoist, wherein the electric hoist is arranged on the top bearing beam and is used for connecting, dismounting and mounting the top bearing beam with the bottom bearing beam and the hoop respectively;

the top bearing beam is stably hung on the upper end surface of the pier stud through a hanger and is fixed, and the bottom bearing beam is connected with the top bearing beam through an electric hoist and is positioned on the ground at the bottom of the pier stud;

s3, assembling the construction operation platform: the construction operation platform comprises a main bearing beam horizontally placed on a bottom bearing beam, the length directions of the bottom bearing beam and the main bearing beam are mutually vertical, a distribution beam is connected between the main bearing beams and positioned above the main bearing beam, a personnel operation pedal is fixed above the distribution beam, and safety guardrails are arranged around the personnel operation pedal;

s4, hoop installation: the construction operation platform is lifted to a designed elevation through the platform lifting device, the hoop is lifted to the designed elevation through the electric hoist, and the hoop bracket is attached to the lower end face of the main bearing beam and tightly held and fixed with the outer wall of the pier column to support the construction operation platform;

s5, dismantling the platform lifting device: the bottom bearing beam is lowered to the ground through the electric hoist to be dismantled, and the top bearing beam is dismantled through the lifting appliance;

s6, bent cap construction: building a bent cap bottom die to complete bent cap construction;

s7, reinstallation of the platform lifting device: the top bearing beam is placed on the top of the cover beam through a lifting appliance, and the bottom bearing beam is lifted by the top bearing beam through an electric hoist to drag the bottom of the construction operation platform;

s8, removing the hoop: transporting the operating personnel to the hoop dismounting position through the climbing vehicle, and descending the hoop to the ground through the electric hoist after dismounting the hoop;

s9, dismantling the construction operation platform: an operator lowers the construction operation platform to the ground through the platform lifting device, and removes the main bearing beam, the distribution beam, the personnel operation pedal and the safety barrier;

s10, dismantling the platform lifting device again: an operator removes the bottom bearing beam, transports the operator to a removal position by adopting a climbing vehicle to remove the electric hoist and the top bearing beam, and transports the removed electric hoist and the top bearing beam to the ground by adopting a lifting appliance; and repeating the steps S1-S10 to finish the construction of the next bent cap.

2. The method for assembling and disassembling the high pier capping beam integrated construction platform according to claim 1, characterized in that: the top load-bearing beam four corners with end spandrel girder both ends all are equipped with the rings that are used for installing electric block, be equipped with in the middle of the top load-bearing beam and dismantle the link plate, can dismantle the link plate connection and be used for the electric block of staple bolt dismouting.

3. The method for assembling and disassembling the high pier capping beam integrated construction platform according to claim 2, wherein the step S7 is specifically as follows: after the detachable hanging plate is detached, the top bearing beam is placed on the top of the cover beam through a lifting appliance, and one side of the top bearing beam is connected with the hoop through an electric hoist and used for the hoop to be detached and descend to the ground; the other side of the top bearing beam is connected with the bottom bearing beam through two electric hoists and used for supporting the construction operation platform when the hoop is detached.

4. The method for installing and dismantling the high pier capping beam integrated construction platform according to claim 1, wherein the step S3 comprises:

s31, mounting a main bearing beam: the main bearing beam is positioned on the bottom bearing beam and is arranged vertical to the length direction of the bottom bearing beam; the main bearing beam is uniformly distributed with distribution beams which are fixedly arranged perpendicular to the length direction of the main bearing beam;

s32, fixing a personnel operating pedal: the personnel operation pedal is fixed on the distribution beam;

s33, installation of the safety barrier: safety guardrails are fixed around the personnel operation pedal.

5. The method for assembling and disassembling the high pier capping beam integrated construction platform according to claim 1, characterized in that: the top bearing beam is in a shape like the Chinese character 'wang', and the bottom bearing beam is in a shape like a straight line.

6. The method for assembling and disassembling the high pier capping beam integrated construction platform according to claim 3, characterized in that: the top bearing beam can not be stably placed due to the fact that the top of the cover beam is provided with the support cushion stone or the embedded part, and the top bearing beam can be replaced by the two bottom bearing beams which are arranged in parallel.

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