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A prefabricated reinforced concrete U-shaped frame beam and its connecting steel frame

A technology of reinforced concrete and frame beams, which is applied to joists, girders, truss beams and other directions, can solve the problems of tying of stirrups, difficult to vibrate and compact concrete, poor close occlusal grip and other problems, and achieves broad application prospects, Good strength and stiffness, convenient construction effect

Active Publication Date: 2018-05-08
姚芳辉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and to solve the problem that the stirrups in the precast concrete beam shell provided in the prior art cannot be bound with the longitudinal bars in the beam and cannot form an integral steel skeleton, and the precast concrete beam shell cannot overcome the prefabricated shell The problem of stress cracking, the longitudinal reinforcement in the precast concrete beam shell cannot be closely occluded with the concrete, the problem of poor grip, the concrete is difficult to vibrate and compact during the construction of the precast concrete beam shell, and the quality of the concrete is defective. The connection and anchorage of the beam reinforcement at the frame beam-column joints provides a prefabricated reinforced concrete U-shaped frame beam and a simpler construction method for the prefabricated reinforced concrete U-shaped frame beam

Method used

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  • A prefabricated reinforced concrete U-shaped frame beam and its connecting steel frame
  • A prefabricated reinforced concrete U-shaped frame beam and its connecting steel frame
  • A prefabricated reinforced concrete U-shaped frame beam and its connecting steel frame

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Effect test

Embodiment 1

[0057] As shown in Figure 1(a) and Figure 1(b), a fabricated reinforced concrete U-shaped frame beam of the present invention includes a bottom plate 11 and a side plate 12, and the bottom plate 11 is equipped with bottom plate longitudinal reinforcement 13, which is a frame beam The first row of longitudinal reinforcement at the bottom, the longitudinal reinforcement 14 for torsional structure is arranged in the side plate 12, and the stirrups 15 are arranged around the beam, protruding from the top of the side plate 12. Thickness requirements. The longitudinal ribs 13 of the bottom plate protrude from both ends of the beam, and the first longitudinal rib from the right facing the end of the beam is longer than the other longitudinal ribs; the bottom plate 11 protrudes several reinforcement pins 16 inwards, so that the prefabricated U-shaped frame The beam can be reliably connected with the concrete in the post-pouring groove, and the integrity is good.

Embodiment 2

[0059] Such as figure 2 As shown, a prefabricated reinforced concrete U-shaped frame beam of the present invention is based on Embodiment 1, and the vertical intersection of the side plate 12 and the secondary beam is provided with a gap 17 for the secondary beam to pass through vertically. The plates 12 are disconnected and the longitudinal ribs 14 of the torsional structure remain connected. figure 2 The prefabricated reinforced concrete U-shaped frame beam is the main beam, and the secondary beam is placed on the main beam. The bottom of the main beam is lower than the bottom of the secondary beam, and the bottom plate 11 of the main beam is not broken. The width of the gap 17 can accommodate the insertion and removal of the secondary beam.

Embodiment 3

[0061] Such as Figure 3-6 Shown, a kind of mold of the present invention makes the prefabricated reinforced concrete U-shaped frame girder described in embodiment 1 and 2, and this mold comprises: outer mold 21, beam end outer baffle plate 23, U-shaped thin steel channel inner mold 22 , end mold U-shaped hoop 24, outer mold pull bar 25, sleeve pipe 26, U-shaped groove 27; described U-shaped thin steel channel inner mold 22, outer mold 21, beam end outer baffle plate 23 and end mold U-shaped hoop 24 are combined into an inverted U-shaped frame beam mold; the U-shaped thin steel channel inner mold 22 is filled with sand 42, and the particle diameter of the sand 42 is less than 5mm; the U-shaped thin steel channel inner mold 22 is vertically arranged on the outer periphery There are stirrups 15; the U-shaped groove 27 is embedded in the base layer 41 of the site corresponding to the position of the stirrups 15; the U-shaped thin steel channel inner mold 22 and the outer mold 21 ...

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Abstract

Belonging to the field of building materials and building construction technologies, the invention relates to a prefabricated reinforced concrete U-shaped frame beam and a construction method thereof. The prefabricated reinforced concrete U-shaped frame beam comprises a base plate (11) and side plates (12), and is characterized in that the base plate (11) is internally equipped with base plate longitudinal ribs (13), the side plates (12) are internally provided with anti-torsion structure longitudinal ribs (14), stirrups (15) are disposed around the beam, the base plate longitudinal ribs (13) stretch out of two ends of the beam, and in a direction over against a beam end, the first longitudinal rib from the right is longer than the other longitudinal ribs. The U-shaped frame beam provided by the invention can well form reliable connection with concrete in a post-poured groove, the integrality is good, the die is few and simple, and the construction is convenient. The U-shaped frame beam has very good strength and rigidity, does not crack in the lifting and transportation process. The base plate longitudinal ribs (13) stretching out from two ends of the U-shaped frame beam can be welded to a connection steel frame (50) at beam-column joints, thus reinforcing the anchoring performance of steel bars and also extending the anchoring length of steel bars. The prefabricated reinforced concrete U-shaped frame beam truly realizes assembly production, and has broad application prospect.

Description

technical field [0001] The invention relates to a beam structure in the construction field, and belongs to the technical field of building materials and building construction, in particular to an assembled reinforced concrete U-shaped frame beam and its connecting steel frame. Background technique [0002] Prefabricated concrete structures refer to concrete structures assembled by prefabricated concrete components through reliable connection methods, including assembled integral concrete structures, fully assembled concrete structures, etc. In construction engineering, it is referred to as prefabricated building; in structural engineering, it is referred to as prefabricated structure. Prefabricated components refer to concrete components prefabricated in factories or on site, such as beams, slabs, walls, columns, balconies, stairs, canopies, etc. [0003] Traditional housing construction technology has low production efficiency, slow construction speed, long construction pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/02E04G13/04
CPCE04C3/293E04G13/04
Inventor 姚伟华姚芳辉
Owner 姚芳辉
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