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Preparation method of assembly type precast concrete member

A prefabricated concrete and prefabricated technology, which is applied in the preparation of prefabricated prefabricated concrete components and the prefabrication of prefabricated concrete culvert segments, can solve the problems of poor contact between the connecting surface and easy cracking of the concrete at the contact surface, and achieve high manufacturing efficiency , easy pouring quality, convenient assembly and construction

Active Publication Date: 2015-06-17
JSTI GRP CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of prefabricated prefabricated concrete components, which can solve the problems of the existing prefabricated culvert segments that the connection surface is not densely contacted, and the concrete at the contact surface is easy to crack.

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  • Preparation method of assembly type precast concrete member
  • Preparation method of assembly type precast concrete member
  • Preparation method of assembly type precast concrete member

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] The invention intends to prefabricate concrete pipes and culverts by vibrating pipe maker method, and adopts the method of vertical layered pouring of culvert sections to improve the problems of undense connection surfaces of sections and reduce cracking of concrete at contact surfaces. Firstly, the construction preparation work of steel formwork, steel backing ring, steel backing ring and concrete cap is completed in the processing plant, and then prefabricated in the factory according to the following steps.

[0020] to combine Figure 1 to Figure 3 , step 1: bury half of the steel spacer 4 in the concrete floor, place the concrete square cap 5 flatly on top of it, align the center of the steel spacer 3 with the center of the steel spacer 4, place the center of the steel spacer 3 Apply release agent on top; place the steel inner mold 2 coated with r...

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Abstract

The invention discloses a preparation method of an assembly type precast concrete culvert. The method comprises the steps as follows: when casting is performed in a vertical direction, the top (a contact surface) of a former precast concrete section is used as a bottom template of an assembly type precast concrete culvert section; when the strength of a precast concrete member reaches 70% of the design strength, two precast concrete sections are hoisted by a hoisting machine, the former section is shifted from the bottom and stored, the later section is transferred to an original position of the former section at the same time, the casting of a next section proceeds, and the circulation is continued; concrete of each section is cast in layers; and fiber concrete are arranged on both the bottom layer and the top layer. According to the method, the prepared precast concrete member can enable connection surfaces between every two adjacent sections to be closely contacted, so that cracking of concrete of contact surfaces among sections of the assembly type precast concrete culvert is prevented and reduced.

Description

technical field [0001] The invention belongs to the technical field of waterproofing of underground culverts in water conservancy projects, and in particular relates to a preparation method of assembled prefabricated concrete components, in particular to the prefabrication of assembled concrete culvert segments. Background technique [0002] At present, many existing culvert constructions are still formed by pouring concrete on site, which requires a lot of manpower, material resources and steel formwork, and the construction cost is very high; site pouring is greatly affected by the climate, and the construction quality is difficult to control; High strength, long construction period. In recent years, prefabricated culverts, as a structural form widely used in urban culverts, can achieve high-quality, modular, standardized and large-scale production, and have the advantages of high production efficiency, less environmental impact, and cost savings. . However, the general ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B21/04
Inventor 张建东刘朵李勇许鹏张帆
Owner JSTI GRP CO LTD
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