CN221219377U - Large-section conversion beam for staged construction - Google Patents

Large-section conversion beam for staged construction Download PDF

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Publication number
CN221219377U
CN221219377U CN202323187608.3U CN202323187608U CN221219377U CN 221219377 U CN221219377 U CN 221219377U CN 202323187608 U CN202323187608 U CN 202323187608U CN 221219377 U CN221219377 U CN 221219377U
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China
Prior art keywords
construction
section
conversion
conversion beam
section conversion
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Active
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CN202323187608.3U
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Chinese (zh)
Inventor
余超
王庆滨
周海鹰
王必军
臧龙
胡元生
郑贵元
彭怀民
胡佳
李耐霞
郝理
甘雨丰
罗发祥
张廷玉
王茜
邹晗轩
何伟
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China Railway Construction Rongcheng Development Co ltd
Mcc Ccid Urban Construction Chongqing Co ltd
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China Railway Construction Rongcheng Development Co ltd
Mcc Ccid Urban Construction Chongqing Co ltd
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Priority to CN202323187608.3U priority Critical patent/CN221219377U/en
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Abstract

The utility model relates to a large-section conversion beam for staged construction, which comprises a large-section conversion beam, wherein the large-section conversion beam is arranged at the joint of an upper shear wall and a lower frame structure, the large-section conversion beam comprises a plurality of conversion beams arranged along the length direction, and friction shear steel bars are reserved at the upper part of the conversion beam positioned at the lowest part. The structural design is flexible, the large-section conversion beam can be structurally divided according to the construction stage, and the integrity of the construction joint of the conversion beam is enhanced by reserving friction shear steel bars.

Description

Large-section conversion beam for staged construction
Technical Field
The utility model relates to the technical field of building structures, in particular to a large-section conversion beam for staged construction.
Background
In the field of building structures, the transfer beam serves as an important structure connecting the upper shear wall and the lower frame structure, and plays a key role in load transfer and transmission. Conventional transfer beams are typically cast at one time, however, this approach often suffers from a number of technical problems when handling large section transfer beams. 1) Binding the steel bars is complex: the steel bar binding work of the large-section conversion beam is quite complicated, the steel bar arrangement and binding require extremely high precision and technical requirements, and the construction time is prolonged and the construction quality is unstable easily. 2) The formwork supporting difficulty is high.
Because the large-section conversion beam is large in size, a large-sized formwork is required to be adopted for one-time pouring, the manufacturing and mounting difficulties of the formwork are increased, and meanwhile, the construction cost is increased. 3) The construction load is larger: the lower structural bottom plate bears a great amount of construction load in the construction stage, so that the lower structural bottom plate is increased in manufacturing cost.
Therefore, a new technical solution is needed to overcome these problems and achieve efficient construction and superior performance of the conversion beam.
Disclosure of utility model
In view of the above, the utility model provides a large-section conversion beam constructed in stages, which realizes efficient construction and superior performance of the conversion beam.
The utility model provides a large-section conversion beam for staged construction, which adopts the following technical scheme:
The utility model provides a large cross-section conversion roof beam of stage construction, includes the large cross-section conversion roof beam, the large cross-section conversion roof beam sets up in upper portion shear force wall and lower part frame construction junction, the large cross-section conversion roof beam includes a plurality of conversion roof beams that set up along length direction, is located the lower extreme conversion roof beam's upper portion is reserved has friction shear steel bar.
Optionally, the large-section conversion beam comprises a lower conversion beam and an upper conversion beam, a construction joint is formed at the joint of the lower conversion beam and the upper conversion beam, and friction shear steel bars are reserved at the construction joint.
Optionally, the friction shear steel bars are arranged in a transverse direction, the lower conversion beam is poured with concrete to form a concrete layer, and the friction shear steel bars are reserved in the concrete layer and extend out of the top of the concrete layer.
Optionally, the straight anchor length of the friction shear steel bar is more than or equal to LaE.
Optionally, the steel bar girder further comprises a U-shaped hoop, wherein the U-shaped hoop is fixedly arranged on the main steel bar of the large-section conversion beam.
Optionally, the cross-sectional shape of the large-section conversion beam is circular, elliptical or rectangular.
In summary, the present utility model includes at least one of the following beneficial technical effects: the structural design is flexible, the large-section conversion beam can be structurally divided according to the construction stage, and the integrity of the construction joint of the conversion beam is enhanced by reserving friction shear steel bars.
Drawings
Fig. 1 is a schematic diagram of a structure of a conversion beam according to an embodiment of the present utility model.
Reference numerals illustrate: 1. a large section transition beam; 2. a lower transfer beam; 3. an upper transfer beam; 4. friction shear steel bars; 5. a U-shaped hoop.
Detailed Description
The present utility model will be described in further detail with reference to fig. 1.
The embodiment of the utility model discloses a large-section conversion beam for staged construction.
Referring to fig. 1, a large-section conversion beam for staged construction includes a large-section conversion beam 1, the large-section conversion beam 1 is disposed at a junction of an upper shear wall and a lower frame structure, the large-section conversion beam 1 includes a plurality of conversion beams disposed along a length direction, and frictional shear steel bars 4 are reserved at an upper portion of a lowermost conversion beam. The structural design is flexible, the large-section conversion beam 1 can be structurally divided according to the construction stage, and the integrity of the construction joint of the conversion beam is enhanced by reserving friction shear steel bars 4.
The cross-sectional shape of the large-section conversion beam 1 can be adjusted according to actual needs to adapt to the requirements of different projects, and in this embodiment, the cross-sectional shape of the large-section conversion beam 1 is circular, elliptical or rectangular.
The structural division of the large-section conversion beam 1 comprises, but is not limited to, two parts, and can be subdivided into N parts according to the construction stage, wherein N is more than or equal to 2. In this embodiment, the large-section transfer beam 1 includes a lower transfer beam 2 and an upper transfer beam 3, and a joint between the lower transfer beam 2 and the upper transfer beam 3 forms a construction joint, where the frictional shear steel bars 4 are reserved. The friction shear steel bars 4 are arranged transversely, a concrete layer is formed after concrete is poured on the lower conversion beam 2, and the friction shear steel bars 4 are reserved on the concrete layer and extend out of the top of the concrete layer. After the pouring of the lower conversion beam 2 is completed, an independent beam structure is formed, and the lower conversion beam has the capability of independently bearing horizontal and vertical loads in a construction stage, so that more functions are exerted in the construction stage.
The conversion beam is completed in a staged construction mode, pouring of the lower conversion beam 2 is firstly carried out, friction shear steel bars 4 are reserved on the upper portion of the lower conversion beam 2, and the upper conversion beam 3 is poured timely to form the integral type large-section conversion beam 1.
The lower conversion beam 2 and the lower structure are integrated to jointly resist structural load, so that the overall stability of the structure is improved. The bearing capacity of the lower conversion beam 2 is fully utilized, the transmission of construction load to a lower-layer bottom plate is reduced, the influence on a lower-layer structure is reduced, the dead weight and the construction load of the upper conversion beam 3 are independently borne, and the investment is saved.
The straight anchor length of the friction shear steel bar 4 is more than or equal to LaE.
The steel bar frame is characterized by further comprising a U-shaped hoop 5, wherein the U-shaped hoop 5 is fixedly arranged on the main steel bar of the large-section conversion beam 1, and the U-shaped hoop 5 is used for fixing the position of the main steel bar of the large-section conversion beam 1 so that various steel bars in the large-section conversion beam 1 form the steel bar of the steel bar frame. The U-shaped hoop 5 improves the shearing resistance of the large-section conversion beam 1, improves the compressive strength of concrete, improves the ductility of the large-section conversion beam 1, improves the torsion resistance of the large-section conversion beam 1, improves the bond strength of concrete to steel bars, and limits the generation and propagation of concrete cracks.
Aiming at the problems of complex steel bar binding, high formwork supporting difficulty, high construction process requirement and high construction load of the traditional one-time pouring method, the structure of the large-section conversion beam 1 is divided according to the construction stage, the structure of the lower conversion beam 2 is poured to form an independent beam structure, the structural stress of the construction stage can be borne, the pouring of the upper conversion beam 3 is timely carried out, and finally the integral conversion beam is formed. The utility model can effectively reduce the influence of the construction load of the conversion beam on the lower structure, improve the construction efficiency, reduce the construction cost and ensure the stability and the safety of the structure.
The construction difficulty is reduced, the formwork supporting difficulty is reduced by a staged construction mode, and the construction process requirement is reduced, so that the construction difficulty and risk are reduced, and the construction of the large-section conversion beam 1 is more controllable and safer; the lower conversion beam 2 plays a role of a beam structure by adopting a staged construction method, and has the capability of independently bearing horizontal and vertical loads in a construction stage, so that more functions are played in the construction stage; investment is saved: the bearing capacity of the lower conversion beam 2 is fully utilized, the transmission of construction load to a lower-layer bottom plate is reduced, the influence on a lower-layer structure is reduced, and further the investment saving is realized.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (6)

1. The utility model provides a large-section conversion roof beam of stage construction which characterized in that: including big cross-section conversion roof beam (1), big cross-section conversion roof beam (1) set up in upper portion shear force wall and lower part frame construction junction, big cross-section conversion roof beam (1) are including a plurality of conversion roof beams that set up along length direction, are located the below the upper portion of conversion roof beam is reserved has friction shear steel bar (4).
2. The large section transfer beam of staged construction of claim 1, wherein: the large-section conversion beam (1) comprises a lower conversion beam (2) and an upper conversion beam (3), a construction joint is formed at the joint of the lower conversion beam (2) and the upper conversion beam (3), and friction shear steel bars (4) are reserved at the construction joint.
3. The large section transfer beam of staged construction of claim 2, wherein: the friction shear steel bars (4) are transversely arranged, concrete is poured on the lower conversion beam (2) to form a concrete layer, and the friction shear steel bars (4) are reserved on the concrete layer and extend out of the top of the concrete layer.
4. A large section transfer beam for staged construction as claimed in claim 3, wherein: the straight anchor length of the friction shear steel bar (4) is more than or equal to LaE.
5. The large section transfer beam of staged construction of claim 1, wherein: the steel bar bridge is characterized by further comprising a U-shaped hoop (5), wherein the U-shaped hoop (5) is fixedly arranged on the main steel bar of the large-section conversion beam (1).
6. The large section transfer beam of staged construction of claim 1, wherein: the cross section of the large-section conversion beam (1) is round, elliptic or rectangular.
CN202323187608.3U 2023-11-24 2023-11-24 Large-section conversion beam for staged construction Active CN221219377U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202323187608.3U CN221219377U (en) 2023-11-24 2023-11-24 Large-section conversion beam for staged construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202323187608.3U CN221219377U (en) 2023-11-24 2023-11-24 Large-section conversion beam for staged construction

Publications (1)

Publication Number Publication Date
CN221219377U true CN221219377U (en) 2024-06-25

Family

ID=91572678

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202323187608.3U Active CN221219377U (en) 2023-11-24 2023-11-24 Large-section conversion beam for staged construction

Country Status (1)

Country Link
CN (1) CN221219377U (en)

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