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Construction technology of prestress sleeper

A construction technology and prestressing technology, applied to tracks, manufacturing tools, roads, etc., can solve problems such as inability to meet construction requirements

Inactive Publication Date: 2017-05-10
中铁(德阳)建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Prestressed sleepers are one kind of sleepers, and the production methods (also called construction methods in factories) adopted by prestressed sleepers with different structures are also different. At present, the prestressed sleeper orders received by our company are suitable for the southwest region. The sleeper used, this sleeper adopts a new structure (transverse perforation is opened on the original sleeper), and the design and construction require that the surface and interior of the sleeper have no micro-cracks, and the structure and performance of the sleeper produced by different construction techniques are not the same , the existing concrete construction technology cannot meet the construction requirements of sleepers with new structures (especially internal and surface microcracks), therefore, it is necessary to develop a special construction method for prestressed sleepers with transverse perforations to adapt to Production

Method used

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Embodiment Construction

[0024] The present invention will be described in further detail below by means of specific embodiments:

[0025] The basic implementation is as follows:

[0026] A construction technique for a prestressed sleeper, comprising the following construction process:

[0027] Steel mold installation: clean the steel mold first, then apply release agent on the formwork, such as release agent, etc., pre-install the casing in the steel mold, and at the same time, set and prestress in the direction perpendicular to the side of the steel mold The transverse perforation of the sleeper corresponds to the through hole;

[0028] Manufacture and installation of prestressed steel wires: the coiled prestressed steel wires are cut according to the construction drawings and then braided into steel wire bundles, and then the steel wire bundles are pier-headed, and the steel wire bundles after pier head processing are installed into the steel mold. The concrete on the supporting plate at the tens...

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PUM

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Abstract

The invention specifically discloses a construction technology of a prestress sleeper. The construction technology comprises the steps of steel mould production and installation, prestressed wire production and installation, wire tendon stretching and drawing, parts production and installation, concrete filling, concrete vibration, edge cutting, tooling unloading and pool-putting, steel mould pool-discharging, stress relaxing, overturning and demolding, wire tendon cutting off and finished product repairing. The brand-new construction technology is designed aiming at the prestress sleeper suitable for the western area, not only can the structure of the sleeper reach the requirement, but also hair-cracking of the inner part and the surface of the sleeper can be effectively and completely eradicated, and thus the apparent mass of the sleeper is improved.

Description

technical field [0001] The invention relates to the technical field of concrete construction, in particular to a construction technique of a prestressed sleeper. Background technique [0002] At present, most of the sleepers used in my country's projects are of standard structure, but because of the differences in regional environment and geological structure, such as the differences in temperature, humidity and geological structure between the south and the north of my country, the sleepers used in some areas are not the same. standard structure. [0003] Prestressed sleepers are one kind of sleepers, and the production methods (also called construction methods in factories) adopted by prestressed sleepers with different structures are also different. At present, the prestressed sleeper orders received by our company are suitable for the southwest region. The sleeper used, this sleeper adopts a new structure (transverse perforation is opened on the original sleeper), and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B23/04B28B1/08B28B1/10E01B3/34
CPCB28B1/08B28B1/10B28B23/04E01B3/34
Inventor 孙镇秦中杰向首屹
Owner 中铁(德阳)建设工程有限公司
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