CN109914267B

CN109914267B - Prefabricated upright post lifting appliance structure

Info

Publication number: CN109914267B
Application number: CN201910328081.0A
Authority: CN
Inventors: 王云龙; 张涛; 闫兴非; 周良; 甘露; 陈玮
Original assignee: Shanghai Urban Construction Design Research Institute Group Co Ltd
Current assignee: Shanghai Urban Construction Design Research Institute Group Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2024-03-26
Anticipated expiration: 2039-04-23
Also published as: CN109914267A

Abstract

The invention discloses a prefabricated upright post lifting tool structure which comprises an upright post body, wherein a bearing and pulling fine turn threaded steel bar and an embedded anchor are embedded in the upright post body, a bearing plate, a lifting point anchor and a steel structure lifting ring are arranged on the upright post body, a steel sleeve is embedded outside the bearing and pulling fine turn threaded steel bar, the bearing and pulling fine turn threaded steel bar in the lifting tool structure is used as a permanent stress steel bar of the structure after the upright post lifting is completed, and even the connection mechanical property of an upright post cover beam can be improved in a mode of adopting the bearing and pulling fine turn threaded steel bar. During the construction of the transverse sectional assembled bent cap, the bearing and pulling fine turn screw thread reinforcing steel bars can be used as anchoring reinforcing steel bars of the shoulder pole beam. The bearing plate, the hanging point anchor and the steel structure hanging ring are repeatedly used when different upright posts are hung. The lifting appliance structure can reduce the use cost of construction materials.

Description

Prefabricated upright post lifting appliance structure

Technical Field

The invention relates to the technical field of bridge construction, in particular to a prefabricated bridge member lifting appliance.

Background

In the construction and production process of an assembled bridge structure, the problem of hoisting of prefabricated components needs to be solved. Considering the existing prefabricated bridge components, the prefabricated bridge components have the characteristic of large hoisting weight; if ordinary steel bars are adopted, a large number of steel bars need to be embedded as lifting appliances, and if prestressed steel strands are adopted, the steel strands are bent into a U shape generally, and P-shaped anchorage devices are embedded. After the lifting devices are lifted, the exposed structure part is usually required to be cut off, the subsequent construction requirements are met, a plurality of steel strand surplus materials are produced, and the waste of materials is caused.

Those skilled in the art are directed to solving the above-mentioned technical drawbacks.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention proposes a lifting appliance for anchoring by pre-embedding the twisted steel bars with fine turns, which can continue to serve as permanently stressed steel bars after the lifting is completed, and improve the stress on the top of the upright by tensioning.

In order to achieve the technical purpose, the invention provides a prefabricated upright lifting appliance structure which comprises an upright body, wherein a bearing fine turn threaded steel bar and an embedded anchor are embedded in the upright body, a bearing plate, a lifting point anchor and a steel structure lifting ring are arranged on the upright body, and a steel sleeve is embedded outside the bearing fine turn threaded steel bar.

Preferably, for the upright post body structure with small weight, the common reinforcing steel bar is suitable for replacing the bearing fine turn screw thread reinforcing steel bar, so that the construction cost is reduced.

Preferably, for the upright post body structure with particularly large weight, the prestressed steel strand is suitable for replacing the threaded steel bar with the bearing fine turn, so that the lifting capacity of the lifting appliance is improved.

Preferably, the steel sleeve is pre-embedded outside the bearing and pulling fine turn deformed bar, so that the fine turn deformed bar is incompletely connected with the upright post body when being used as a lifting appliance, the fine turn deformed bar is stretched after the assembly of the capping beam is completed, and the pre-stressing force is applied, so that the mechanical property state of the connection between the upright post and the capping beam is further improved.

Preferably, in the construction process of transversely sectionally assembling the bent cap, the bearing and pulling fine turn screw-thread steel bars are used as anchor steel bars of the shoulder pole beam, so that the use of the anchor steel bars of the shoulder pole beam is reduced.

The invention has the beneficial effects that:

(1) The bearing plate, the hanging point anchor and the steel structure hanging ring can be reused when different upright posts are hoisted after being dismantled.

(2) The tension-bearing fine turn screw-thread steel bar can be used as a vertical steel bar for connecting a post bent cap structure for subsequent construction, and can also be used for tensioning prestress after the post bent cap construction is completed, so that the mechanical property of the post bent cap connection is improved.

(3) The fine turn twisted steel has high tensile and compressive design strength and is suitable for being used as a hanging point of a heavy-weight member.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of a first step of the present invention in engineering construction;

FIG. 3 is a second schematic diagram of the steps of the present invention used in engineering construction;

FIG. 4 is a schematic diagram of a third step of the present invention in engineering construction;

FIG. 5 is a schematic diagram showing a fourth step of the present invention in engineering construction;

in the figure: the steel pile comprises a column body 1, a bearing fine turn screw thread reinforcing steel bar 2, a pre-embedded anchor, a bearing plate 4, a lifting point anchor 5, a steel structure lifting ring 6, a steel sleeve 7, a shoulder pole beam 8, a cover beam edge section 9, a cover beam middle section 10 and a permanent anchor 11.

Detailed Description

The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.

Examples:

as shown in fig. 1, a prefabricated upright lifting appliance structure comprises an upright body 1, wherein a bearing and pulling fine turn deformed bar 2 and an embedded anchor 3 are embedded in the upright body 1, a bearing plate 4, a lifting point anchor 5 and a steel structure lifting ring 6 are installed on the upright body 1, and a steel sleeve 7 is embedded outside the bearing and pulling fine turn deformed bar 2.

Specifically, the bearing and pulling fine turn deformed bar 2 can be used as a vertical bar for permanently stressed structural connection of the cover beam of the upright post body 1 for completing subsequent construction.

Specifically, the tension-bearing fine turn deformed bar 2 can stretch and pre-stress after finishing the construction of the capping beam of the upright post body 1, so that the connection mechanical property of the upright post capping beam is improved.

Specifically, the tension bearing fine turn twisted steel bar 2 can be applied to shoulder pole beam anchoring steel bars for transverse sectional assembly bent cap construction.

Specifically, the bearing plate 4, the suspension point anchor 5 and the steel structure hanging ring 6 can be reused when different upright post bodies 1 are hoisted.

Specifically, the tension-bearing fine turn twisted steel 2 can be replaced by a common steel bar or a prestressed steel strand.

As shown in fig. 2-5, a prefabricated upright lifting appliance structure comprises the following steps in engineering construction:

step one: referring to fig. 2, the hanging points are pre-buried when the upright post body 1 is prefabricated, and the components of the bearing fine turn deformed bar 2, the pre-buried anchor 3 and the steel sleeve 7 are pre-buried;

step two: referring to fig. 3, a vertical column body 1 is hoisted, and a bearing plate 4, a hoisting point anchor 5 and a steel structure hoisting ring 6 are installed to form a complete hoisting tool, so that hoisting is completed;

step three: referring to fig. 4, the capping beam construction, the bearing plate 4, the hanging point anchor 5 and the steel structure hanging ring 6 assembly are removed, the capping beam middle section 10 is hoisted, and the tension refined turn twisted steel bar 2 is used as an anchor point for the sectional capping beam assembly shoulder pole beam 8, so that the sectional capping beam assembly is completed;

step four: referring to fig. 5, after the construction of the prestressed construction and the construction of the capping beam are completed, the tension bearing fine turn deformed bar 2 is tensioned, the prestressed is applied, the permanent anchor 11 is installed, grouting is performed in the steel pipe sleeve 7, and the durability of the bearing fine turn deformed bar 2 is improved.

When the upright post body 1 is prefabricated, the bearing and pulling refined turn screw thread reinforcing steel bars 2 and the embedded anchors 3 are embedded, and when the upright post body 1 is maintained and needs to be hoisted, the bearing plate 4, the hoisting point anchors 5 and the steel structure hoisting rings 6 are installed to complete the hoisting tool assembly, so that the structure hoisting is completed. During hoisting, the lifting hook of the crane can be arranged on the steel structure lifting ring 6, and the gravity of the upright post body 1 sequentially passes through the embedded anchor 3, the bearing fine turn screw steel bar 2, the lifting point anchor 5, the bearing plate 4 and the steel structure lifting ring 6 to finish internal force transmission. After the installation is completed, the bearing plate 4, the hanging point anchor 5 and the steel structure hanging ring 6 are removed, the removed part can be reused, and the lifting appliance structure which is not removed can be used as a connecting steel bar of the upright post and the capping beam, so that the connection between the capping beam and the upright post is enhanced.

As a transformation of the embodiment of the patent, the size of the bearing plate can be adjusted according to actual needs, so long as the requirement of bearing capacity can be met.

As a transformation of the embodiment of the patent, the specific structure of the steel structure hanging ring can be adjusted according to the needs, including structural form, specific size and the like, and can be connected with the bearing plate 4 in various connection forms such as welding, anchor bolt connection and the like, so long as the requirement of tensile bearing capacity can be met.

As a variation of the embodiment of the present patent, different numbers and sizes of the tie-rod fine turn deformed bars 2 can be set according to different weights of the structure.

The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. The utility model provides a prefabricated stand hoist structure, includes stand body (1), its characterized in that: the vertical column body (1) is pre-embedded with a bearing fine turn screw thread reinforcing steel bar (2) and a pre-embedded anchor (3), the vertical column body (1) is provided with a bearing plate (4), a hanging point anchor (5) and a steel structure hanging ring (6), and a steel sleeve (7) is pre-embedded outside the bearing fine turn screw thread reinforcing steel bar (2);

the bearing fine turn deformed bar (2) is used as a vertical bar for permanently stressed connection of a cover beam structure of the upright post body (1) for completing subsequent construction;

the bearing plate (4), the lifting point anchor (5) and the steel structure lifting ring (6) are repeatedly used when different upright post bodies (1) are lifted;

the tension-bearing fine turn twisted steel (2) is a common steel or a prestressed steel strand.

2. The prefabricated stud hanger structure of claim 1, wherein: after the construction of the vertical column body (1) bent cap is completed, the tension prestress of the vertical column bent cap is improved by the tension fine turn twisted steel bar (2).

3. The prefabricated stud hanger structure of claim 1, wherein: the tension bearing fine turn twisted steel bar (2) is applied to shoulder pole beam anchoring steel bars for construction of transverse sectional assembly bent cap.