CN111350349B - Platform beam main reinforcement reinforcing construction method - Google Patents

Abstract

The invention provides a platform beam main reinforcement reinforcing construction method which comprises the following steps: 1) partially removing a template at the end part of the beam or forming a hole on the template at the end of the beam; the second step is that: processing a corresponding number of reinforcing ribs in advance according to the number of main ribs to be reinforced; 2) sequentially penetrating reinforcing ribs from the end heads of the beams, taking opposite tension screws arranged in the beams and used for reinforcing the locking side template as support bottoms, taking PVC pipes on the screws as sliding rollers, stretching in and hooking the ends of the reinforcing ribs from gaps between main beams by using hooks, lifting and pulling the guiding reinforcing ribs forwards, and pushing the reinforcing ribs to corresponding parts in the beams by simultaneously matching and forcibly front and back; 3) all reinforcing steel bars to be reinforced are penetrated one by one, the reinforcing steel bars are lifted and adjusted to corresponding height positions by using hooks, and binding and fixing are carried out by using iron wires; 4) the reinforcing ribs are used for reinforcing, the beam end template or the holes are sealed, and the next procedure is carried out after the inspection acceptance is passed.

Description

Platform beam main reinforcement reinforcing construction method

Technical Field

The invention belongs to the technical field of construction of platform beams in constructional engineering, and particularly relates to a platform beam main reinforcement reinforcing construction method.

Background

In the field of building construction, whether civil buildings or industrial buildings, reinforced concrete beams, slabs and columns are the most common structural main bodies. Particularly, in the metallurgical industry, for example, high-speed wires, bars, heating furnaces and the like are almost all reinforced concrete frame structures, the cross sections of platform beams and plates are large in size, reinforcing steel bars are dense, bolts and embedded parts are more, and a plurality of shear grooves, reserved holes and the like exist.

In construction, the operation is generally carried out according to working procedures and groups, reinforcing steel bar binding of the reinforcing steel bar operation groups is carried over after the templates are erected, and then the bolts are installed to embed the pieces and the reserved hole templates are erected. The binding of the beam plate reinforcing steel bars is often finished, the upper layer reinforcing steel bars are found to be dense when the bolts are installed or the shear groove hole templates are arranged, the upper layer reinforcing steel bars coincide with the bolts and the shear grooves, and the reinforcing steel bars are pried and stripped to achieve the purpose in common construction. However, sometimes, because the upper layer of steel bars are dense, the bolts and the shear grooves are grouped in rows (such as a rolling line heating furnace), the main bars cannot be forcibly adjusted and separated under the binding constraint of the beam stirrups, and the main bars of the cut beam cannot be connected in sections, so that the main bars can only be adjusted downwards and arranged into two layers or the reinforcing steel bars on the two sides of the bolt shear groove template meet the requirements. And the design change needs to add reinforcing bars in the constructed beam, and obviously, the workload is large if the beam plate reinforcing bars are dismantled, so that the time and labor are wasted, the cost is increased, and the construction period is delayed.

Disclosure of Invention

The invention aims to solve the technical problem that construction is inconvenient when the original main reinforcement needs to be cut off in a beam and the main reinforcement is reinforced by adopting the reinforcing ribs or is changed to increase the main reinforcement due to the conditions that the beam main reinforcement and the stirrups are densely arranged and the reserved holes are formed in the beam which are constructed firstly in the platform beam reinforcement construction in the prior art.

In order to solve the technical problems, the invention provides a novel reinforcing bar construction method, which comprises the following specific technical contents:

a platform beam main reinforcement construction method comprises the following steps:

the first step is as follows: partially removing a template at the end part of the beam or forming a hole on the template at the end of the beam;

the second step is that: processing a corresponding number of reinforcing ribs in advance according to the number of main ribs to be reinforced;

the third step: sequentially penetrating reinforcing ribs from the end heads of the beams, taking opposite tension screws arranged in the beams and used for reinforcing the locking side template as support bottoms, taking PVC pipes on the screws as sliding rollers, stretching in and hooking the ends of the reinforcing ribs from gaps between main beams by using hooks, lifting and pulling the guiding reinforcing ribs forwards, and pushing the reinforcing ribs to corresponding parts in the beams by simultaneously matching and forcibly front and back;

the fourth step: all reinforcing steel bars to be reinforced are penetrated one by one, the reinforcing steel bars are lifted and adjusted to corresponding height positions by using hooks, and binding and fixing are carried out by using iron wires;

the fifth step: and (4) finishing reinforcing the reinforcing ribs, sealing the beam end template or the holes, and performing the next procedure after the inspection acceptance is passed.

The method not only greatly reduces the labor intensity of workers and reduces the labor amount, but also does not need to demolish the template scaffold, the plate steel bars and the beam stirrups, is particularly suitable for beams with more shearing-resistant slot holes and bolts in rows, and adds the reinforcing ribs at the bottom or the side surface of the shearing-resistant slot template.

Detailed Description

The technical solution of the present invention is described in detail below: the construction concept of the invention is that reinforcing steel bars are penetrated from one end of a beam, the ends of the reinforcing steel bars are lifted by a hook to pull the bottoms of the split pulling rods in the matched beam, PVC pipes on the split pulling rods are used as sliding rollers, the reinforcing steel bars are penetrated from the beam end to move to corresponding positions in a translation manner, and then the reinforcing steel bars are lifted to a specified elevation by the hook to be fixed. The template and the constructed beam steel bar are not required to be damaged in the installation process of the reinforcing steel bar, and the problem frequently encountered in the existing construction is solved.

The implementation steps of the invention are described in detail by combining specific construction examples, and the specific construction operations are as follows:

the first step is as follows: and partially removing the template at the end part of the beam or forming a hole on the template at the end of the beam.

The second step is that: and the corresponding quantity of reinforcing ribs are processed in advance according to the quantity of the main reinforcing ribs required to be reinforced. Also can adopt the ligature overlap joint mode when roof beam reinforcing bar quantity is less, when roof beam length is greater than a whole reinforcing bar length, can adopt straight thread mechanical connection, the silk mouth that finishes of processing in advance, in the preceding reinforcing bar all penetrate the roof beam in the time connect in advance can.

The third step: penetrate the reinforcing bar from roof beam end or hole in proper order, utilize as holding in the palm the end to drawing the lead screw, PVC pipe on the lead screw is as the slip gyro wheel, catches on the reinforcing bar end with the couple from between the roof beam owner muscle, plays and draws the guide effect to the cooperation penetrates the propelling movement to corresponding position with the reinforcing bar from the end.

The fourth step: all the reinforcing steel bars needing to be reinforced are penetrated one by one, the reinforcing steel bars are lifted and adjusted to the corresponding height position by the hooks, and the reinforcing steel bars are bound and fixed by iron wires.

The fifth step: and (4) finishing reinforcing the reinforcing ribs, sealing the beam end template or the holes, and performing the next procedure after the inspection acceptance is passed.

The hook used in the construction is formed by bending the short steel bars, and is convenient to take on the construction site.

By analyzing the application construction example once, the implementation effect of the invention is as follows:

through actual construction measurement, for example, 2-4 reinforcing steel bars need to be reinforced by a platform beam with a cross section of 500mm x 1000mm and a length of 8-10 m. If the scaffold, the template, the beam stirrups and the plate reinforcements need to be dismantled, the beam is bound again, and then the template is closed, about 4-6 working days of labor are consumed, and the mechanical cost for hoisting the steel reinforcement template by a crane is not considered; if the method is adopted, the operation can be completed only by spending 3-4 workers in half a day (1-2 workers in total). The comparison shows that the cost can be saved by more than 50 percent, and the benefit is more considerable when the number of the beams needing to be reinforced is more.

Labor cost: 250 yuan/day (per current market price), beams are counted as one quantity.

Economic benefits are as follows: 250 yuan 1.5 yuan 375 yuan per day

If the technology is not adopted, a conventional vibration mode is adopted, so that the labor cost is generated:

labor cost: 250 yuan by 6 yuan (day) 1500 yuan.

The method has the advantages that the method has direct economic benefits of a single beam: 1500 + 375 is 1125 yuan.

The construction method has the advantages that the template, the scaffold and the beam slab steel bars do not need to be dismantled again, the damage to the constructed structure is reduced, the rework amount is small, the construction speed is accelerated, the installation and operation of the reinforcing steel bars are simple, the construction is convenient, the cost is relatively low, the protective reinforcement is realized, and the green environmental protection is embodied.

Claims (1)

1. A platform beam main reinforcement construction method comprises the following steps:

the first step is as follows: partially removing a template at the end part of the beam or forming a hole on the template at the end of the beam;

the second step is that: processing a corresponding number of reinforcing ribs in advance according to the number of main ribs to be reinforced;

the third step: sequentially penetrating reinforcing ribs from the end heads of the beams, taking opposite tension screws arranged in the beams and used for reinforcing the locking side template as support bottoms, taking PVC pipes on the screws as sliding rollers, stretching in and hooking the ends of the reinforcing ribs from gaps between main beams by using hooks, lifting and pulling the guiding reinforcing ribs forwards, and pushing the reinforcing ribs to corresponding parts in the beams by simultaneously matching and forcibly front and back;

the fourth step: all reinforcing steel bars to be reinforced are penetrated one by one, the reinforcing steel bars are lifted and adjusted to corresponding height positions by using hooks, and binding and fixing are carried out by using iron wires;

the fifth step: and (4) finishing reinforcing the reinforcing ribs, sealing the beam end template or the holes, and performing the next procedure after the inspection acceptance is passed.