CN211923643U - Jacking device - Google Patents

Abstract

The utility model discloses a jacking device, including running through the deformed steel bar planting on the cylinder, the girder steel is installed to both sides around the deformed steel bar planting, through channel-section steel welded connection between the girder steel, is provided with the support steel pipe under both ends about the girder steel, is located to be equipped with the auto-lock cushion on the support steel pipe in the outside, is equipped with the jack on the inboard supporting steel plate, supports the bottom and the grade beam fixed connection of steel pipe, and the auto-lock cushion includes the supporting shoe of base and threaded mounting on the base. In this way, the utility model relates to a jacking device can ensure that the jacking process is stable, avoids causing structural damage, construction safe and reliable to the building.

Description

Jacking device

Technical Field

The utility model relates to a building jacking construction method field especially relates to a jacking device.

Background

The existing building jacking method is characterized in that after the jack finishes jacking of one stroke, cushion blocks are used for replacing the jack in batches, the weight of a building is supported by the cushion blocks, and the top surfaces of the cushion blocks cannot be in close contact with the bottom surface of a tray, so that the building can fall back to a certain extent after the jack is detached, and the cushion blocks are stressed unevenly in the falling back process, so that the building is easily structurally damaged, and certain loss is caused; on the other hand, when bottom concrete is poured, because a jack used in the prior art is not a mechanical self-locking structure, the weight of a building is supported only by self-locking of a hydraulic station, and when the jack leaks or is in power failure and other faults, the building can be directly damaged.

Disclosure of Invention

The utility model discloses the main technical problem who solves provides a jacking device, can ensure that the jacking process is stable, avoids causing structural damage, construction safe and reliable to the building.

In order to solve the technical problems, the invention adopts a technical scheme that: the jacking device comprises a plurality of deformed steel bars which penetrate through a cylinder body, steel beams are mounted on the front side and the rear side of each deformed steel bar, the steel beams are connected through channel steel welding, supporting steel pipes are arranged under the left end and the right end of each steel beam, self-locking cushion blocks are arranged on the supporting steel pipes located on the outer sides, jacks are arranged on the supporting steel plates on the inner sides, the bottoms of the supporting steel pipes are fixedly connected with the ground beams, and the self-locking cushion blocks comprise supporting blocks, wherein bases and threads are mounted on the supporting blocks on the bases.

In a preferred embodiment of the present invention, the column body, the steel beam and the channel steel are integrally formed as a pillar-holding beam by pouring the grouting material between the steel beam and the column body.

In a preferred embodiment of the present invention, the deformed steel bars are symmetrically inserted into the holes on the left and right sides of the cylinder and avoid the original bars in the cylinder.

In a preferred embodiment of the present invention, the number of the supporting steel pipes is 8, and the distance between two adjacent supporting steel pipes is set.

The utility model has the advantages that: the jacking device can ensure the stability of the jacking process, avoid structural damage to buildings and ensure safe and reliable construction.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a schematic structural view of a preferred embodiment of a jacking device of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of a portion of the structure of FIG. 1;

FIG. 4 is a schematic diagram of a construction process of a jacking construction method for correcting deviation of house reinforcement;

FIG. 5 is a schematic diagram of a construction process of a jacking construction method for correcting deviation of house reinforcement;

FIG. 6 is a schematic diagram of the construction process of the jacking construction method for correcting deviation of house reinforcement;

the parts in the drawings are numbered as follows: 1. the deformed steel bar planting device comprises a deformed steel bar planting device, 2, a steel beam, 3, channel steel, 4, a supporting steel pipe, 5, a self-locking cushion block, 51, a base, 52, a supporting block, 6, a jack, 7, a supporting cushion block, 8, a hole, 9, a column body, 10, a steel bar, 11 and a ground beam.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1 to 3, a jacking device, including a plurality of deformed steel bars 1 penetrating on a column body 9, steel beams 2 are installed on the front and back sides of the deformed steel bars 1, the steel beams 2 are connected by welding through channel steel 3, supporting steel pipes 4 are arranged under the left and right ends of the steel beams 2, self-locking cushion blocks 5 are arranged on the supporting steel pipes 4 positioned on the outer side, jacks 6 are arranged on the supporting steel plates 4 on the inner side, the bottom of the supporting steel pipes 4 is fixedly connected with a ground beam 11, and the self-locking cushion blocks 5 comprise a base 51 and supporting blocks 52 installed on the base by threads.

In addition, grouting materials are poured between the steel beam 2 and the column body 9, so that the column body 9, the steel beam 2 and the channel steel 3 form an integral column-holding beam.

In addition, the deformed steel bar planting 1 symmetrically penetrates through the holes 8 on the left side and the right side of the column body 9 and avoids the original steel bars 10 in the column body 9.

In addition, the number of the support steel pipes 4 is 8, and the two adjacent support steel pipes 4 are arranged at intervals.

A jacking construction method for house reinforcement and deviation rectification comprises the following steps:

as shown in fig. 4, the columns of the building are chiseled and perforated: detecting the position of original steel bars on the cylinder, avoiding the original steel bars of the cylinder during punching, symmetrically punching the holes on the left side and the right side of the cylinder, and then installing deformed steel bar planting bars in the holes;

as shown in fig. 1, the steel beam support is installed: the method comprises the following steps that steel beams are installed at the front end and the rear end of a deformed steel bar planting bar and are screwed down through nuts, concrete chiseling is conducted on the connecting portion of the deformed steel bar planting bar and the steel beams to increase the friction coefficient, the steel beams are leveled in the installation process, uneven stress in the jacking process is avoided, the steel beams are connected through channel steel welding, grouting materials are poured between the steel beams and the columns to enable the columns, the steel beams and the channel steel to form an integral column-embracing beam, eight supporting steel pipes are installed at the lower ends of the steel beams, the bottoms of the supporting steel pipes are connected with a ground beam through bolts, the contact surface between the bottoms of the supporting steel pipes and the ground beam is tightly filled with epoxy glue, the bottom stress is guaranteed to be even;

the column holding beam bears load when the house is lifted, so 2M 40 finish-rolled deformed steel bars are implanted through holes formed in the column, then the steel beam is erected, and meanwhile, the finish-rolled deformed steel bars penetrate through a web plate of the section steel beam and are screwed tightly. Two 32a channel steels are erected in the direction of vertical section steel and are welded with the bottom of the lower flange of a steel beam web plate to form a frame body. Pouring grouting material from the top to form the column holding beam with the enlarged cross section.

Fixing the column body at symmetrical positions around the column body by using 4M16 chemical anchor bolts, leveling the ground by using epoxy glue, and finally installing a supporting steel pipe. In order to ensure the stable position of the support steel pipe, the support steel pipe can be fixed through a limiting measure.

Chiseling column concrete, cutting off reinforcing steel bars: selecting the upper part area of the column body, chiseling the concrete in the area until the reinforcing steel bars are completely exposed, ensuring the double-side welding lap joint length of the reinforcing steel bars by the height of the chiseled concrete area, cutting the exposed reinforcing steel bars, temporarily reinforcing the periphery of the column body, and avoiding the left and right displacement in the jacking process;

the load of the transmission column is transferred to four jacks by preloading, and then the surface of the column is chiseled to expose the reinforcing steel bars and cut off. And finally chiseling off concrete in the column. And after the stand column is broken, immediately carrying away the cut reinforced concrete column block.

As shown in fig. 5, the jacking operation is performed: jacks are arranged on the four steel pipes on the inner side, the jacks are used for pre-stressing the steel beams upwards, displacement sensors are installed, a PLC synchronous jacking system is used for controlling the jacks to work, various parameters are recorded, information such as point position numbers, actual displacement, synchronous displacement, tonnage of each point position, total tonnage and the like is displayed, 4 jacks are controlled to lift synchronously, after the jacks lift a certain height, supporting cushion blocks 7 are installed between the self-locking cushion blocks and the steel beams, then the jacks synchronously descend to the initial positions, supporting cushion blocks are additionally arranged between the jacks and the steel beams, then the jacks continue to be lifted synchronously, and the steps are repeated until the column body is lifted to the required height;

the flatness of the bottom surface of the column-holding beam and the verticality of the side surface of the position where the limiting position is arranged are within 2 mm. The concrete strength of the column holding beam and the cushion block must meet the design requirements during jacking; whether the jack pressure is consistent with the jacking height or not needs to be closely checked in the jacking process. The pressure amplitude of the jack is controlled within 2MPa when the pressure of the jack rises and falls each time. Whether the limit is abnormal or not needs to be closely checked in the jacking process, and if the limit is abnormal, the limit is timely reinforced. The support cushion block reinforcement must be reinforced according to design requirements, and is generally replaced once per liter by one stroke.

Splicing main reinforcements in the column and pouring concrete: after jacking is completed, welding the two sides of the steel bar, installing a template, pouring grouting material, and removing the temporary support after the strength of the grouting material is reached;

as shown in fig. 6, the jacking device is removed, after the concrete pouring of the column body is completed, the section of the column body is increased, the steel bars are planted on the periphery of the column body, then the template is installed, the pouring is carried out, and the area of the bottom surface of the column body is increased.

Be different from prior art, the utility model discloses jacking device can ensure that the jacking process is stable, avoids causing structural damage, construction safe and reliable to the building.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (4)

1. The utility model provides a jacking device, its characterized in that, is including running through many deformed steel bars on the cylinder, the girder steel is installed to both sides around the deformed steel bar, through channel-section steel welded connection between the girder steel, be provided with the support steel pipe under both ends about the girder steel, be located and be equipped with the auto-lock cushion on the support steel pipe in the outside, be equipped with the jack on the inboard supporting steel plate, the bottom and the grade beam fixed connection of support steel pipe, the auto-lock cushion includes that base and screw thread install the supporting shoe on the base.

2. The jacking device of claim 1, wherein grouting material is poured between the steel beams and the column body so that the column body, the steel beams and the channel steel form an integral column-embracing beam.

3. The jacking device of claim 1, wherein the deformed steel bars are symmetrically inserted into the holes on the left and right sides of the column body and avoid the original steel bars in the column body.

4. The jacking device of claim 1, wherein the number of the support steel pipes is 8, and two adjacent support steel pipes are arranged at intervals.

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