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A kind of prefabrication method of hollow beam and slab integral casting

A technology of hollow beams and bottom plates, which is applied in the direction of manufacturing tools, ceramic molding mandrels, ceramic molding machines, etc., can solve the problems of long construction period and many procedures, and achieve the effect of improving pouring efficiency and reducing procedures

Active Publication Date: 2022-07-29
湖南省湘西公路桥梁建设有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that after demoulding, it is necessary to construct end-capping concrete to seal the end of the slab girder, and it is necessary to wait for the sealing concrete to completely solidify before it can be put into use. There are many procedures and a long construction period

Method used

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  • A kind of prefabrication method of hollow beam and slab integral casting
  • A kind of prefabrication method of hollow beam and slab integral casting
  • A kind of prefabrication method of hollow beam and slab integral casting

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Embodiment 1

[0044] The embodiment of the present application discloses a method for prefabricating a hollow beam-slab integral casting, comprising the following steps:

[0045] Step 1, refer to figure 1 and figure 2 , clean the base 1. In this embodiment, the base 1 is a concrete mold. First, rinse the dust and rust on the base, clean it, and then apply the release agent on the base 1, generally 2 to 3 times, and apply Brush evenly to prevent the base 1 from adhering to the beam body, causing damage to the base 1.

[0046] Step 2: Make and install the steel reinforcement frame 2 of the bottom plate. The grade and diameter of the steel bars are made in strict accordance with the requirements of the design documents. The steel bars are connected by welding. The main steel bar and other welded steel bars are double-sided welding. The welding quality is strictly in accordance with the specification requirements. Finally, according to the design drawings, install the steel frame 2 of the bo...

Embodiment 2

[0057] refer to Figure 4 and Figure 5 , the difference between this embodiment and the embodiment is: the positioning rod 7 and the core mold positioning seat 5 are provided with two groups along the width direction of the hollow beam plate, and the two positioning rods 7 are commonly worn on both ends of the same anti-floating plate 10 , the anti-floating plate 10 can slide along the axial direction of the positioning rod 7 . A locking nut 14 is threaded on the positioning rod 7, and the anti-floating plate 10 is located between the locking nut 14 and the foam core mold 13. When the locking nut 14 is tightened, the locking nut 14 can press the anti-floating plate 10 against the on the foam core mold 13 . Two reinforcing bar positioning seats 12 are also provided on the corresponding top plate steel bar frame 11 , and the reinforcing bar positioning seats 12 are inserted and matched with the positioning rods 7 in one-to-one correspondence. By arranging two sets of positio...

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Abstract

The present application relates to a method for prefabrication of hollow beams and slabs, which belongs to the field of bridge construction. The steel skeleton of the bottom plate is installed on the pedestal; Step 3, install the template, fix the template on the base, and make the template surround the steel skeleton of the bottom plate; Step 4, pour the concrete bottom plate, so that the concrete is filled into the steel skeleton of the bottom plate to form a concrete bottom plate; Step 5, install the foam mandrel, install the foam mandrel on the concrete base plate, and fix it with anti-floating parts; step 6, pour the concrete side plate, pour the concrete symmetrically and balancedly on both sides of the foam mandrel until it reaches the beam surface Elevation; Step 7, pouring the concrete roof, first install the roof reinforcement skeleton on the foam mandrel, and then pour the concrete. The present application has the effect of reducing the whole casting prefabrication process of hollow beams and slabs and improving the casting efficiency.

Description

technical field [0001] The present application relates to the field of bridge construction, and in particular, to a method for prefabricating hollow beams and slabs. Background technique [0002] With the continuous development of the national economy, the role and status of highway transportation in the national economy has become more and more prominent. As the hub of highway transportation, the bridge has also been greatly developed. The upper part of medium and small span bridges mostly adopts prestressed and non-prestressed hollow beam-slab assembly structure. The hollow beam-slab structure is simple. It has the characteristics of convenient prefabrication, simple process, economical use of materials, easy factory and standardized production, convenient transportation and hoisting, and wide adaptability. [0003] At present, the inner shape of the hollow beam slab is a chamfered rectangle, similar to a small box girder. Due to the small internal size, if a steel inner...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B7/30B28B7/38B28B13/02B28B23/02
CPCB28B13/02B28B23/022B28B7/30B28B7/384
Inventor 许可骄彭新林杨竹林伟田正钦
Owner 湖南省湘西公路桥梁建设有限公司
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