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One-step molding method of vase-shaped columnar pier for urban viaduct bridges

A viaduct, vase-shaped technology, applied in the direction of erecting/assembling bridges, bridges, bridge parts, etc., to achieve the effects of simple and convenient operation, improved appearance quality, and high strength

Inactive Publication Date: 2010-09-29
CHINA FIRST METALLURGICAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to our accumulated experience and analysis, although there are several layers of steel bars on the top of the pier, after the steel bars are installed proficiently, they can be installed very quickly and can be completely installed before the initial setting of the concrete.

Method used

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  • One-step molding method of vase-shaped columnar pier for urban viaduct bridges
  • One-step molding method of vase-shaped columnar pier for urban viaduct bridges
  • One-step molding method of vase-shaped columnar pier for urban viaduct bridges

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Embodiment Construction

[0023] The bridge pier described in the present invention is the vase-shaped column pier of the urban viaduct currently used, which is divided into figure 1 The city viaduct shown is a vase-shaped column with double piers and figure 2 The single pier of the city viaduct shown in vase-shaped columns. Regardless of whether it is a double pier or a single pier, the structure is as follows: from bottom to top, there are standard section 1, variable section section 2 and support pad stone 3.

[0024] The method provided by the invention is to use a novel formwork to realize the one-time molding construction of the above-mentioned bridge piers. The structure of this template is as follows image 3 and Figure 4 As shown: there are caps 4, mortar formwork 6, and bridge pier steel molds 7, which are distributed from bottom to top. The profile of the pier steel form 7 is identical to that of the vase-shaped column-type pier of the urban viaduct that needs to be constructed. Evenl...

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Abstract

The invention relates to a one-step molding method of a vase-shaped columnar pier for a urban viaduct bridges, comprising the following steps of: embedding reinforcing ribs (5) according to the height of a mortar template (6) before pouring concrete in a bearing platform (4); building the mortar template on the bearing platform (4), coating wrapping the reinforcing ribs (5) in the mortar template and then placing a pier steel mould (7) on the mortar template after the bearing platform (4) and the mortar template (6) reach the strength of 5MPa; in the process of pouring the concrete to the pier steel mould, and when pouring the concrete to the position 0.8-1.2 meters far away from the pier top, starting to install a pier top reinforcing rib net (8), and then continuously pouring the concrete; finally to finish accomplishing the one-step molding construction of the pier. The invention avoids the defects generated by two-step pouring in the traditional method and has the advantages of simple and convenient construction, safety and reliability, rapid construction and low expense.

Description

technical field [0001] The invention relates to the field of bridge piers, in particular to a one-time molding method for vase-shaped column piers of urban viaducts. Background technique [0002] In recent years, the piers designed in Shanghai, Guangzhou and other cities have been designed with vase-shaped column piers (see figure 1 ) mainly, because of its beautiful appearance, vase-shaped column piers can be seen everywhere in the country, but after a closer look, it is found that there are appearance defects such as wrong platforms, inconsistent concrete colors, and poor overall linearity. The vase-shaped column piers have the same height and form of the variable section section, but the height of the standard section is different. The height difference of the same type of pier is not a whole centimeter, but the mantissa of the height difference is millimeters, so it is inconvenient to customize a whole set of general templates. The common part is customized according t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/02
Inventor 邵正东尹传斌李少辉吴宗庆王春兰
Owner CHINA FIRST METALLURGICAL GROUP
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