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Construction technology of interchange type bare concrete anti-collision guardrails

A technology of fair-faced concrete and anti-collision barriers, which is applied to bridge parts, bridges, buildings, etc., can solve the problems of uneven color and luster on the surface of anti-collision barriers, and achieve the effects of improving the overall perception quality, shortening the construction period, and reducing defect handling

Active Publication Date: 2016-07-13
CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a construction technique for intercommunicating fair-faced concrete anti-collision barriers. After selecting the concrete and determining the production process parameters and performance indicators of the concrete, the concrete is made on site according to the actual construction plan. Structural test, through the test to confirm the mix ratio of concrete, formwork system, construction technology, etc., and further optimize the process according to the test situation, determine the process steps of the formal construction of fair-faced concrete, so that the appearance and color of the poured anti-collision guardrail are consistent, Eliminate the uneven color of the surface of the concrete anti-collision guardrail in the past, and the defects that need to be processed and repaired later

Method used

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Embodiment 1

[0049] Specifically explain the construction technology of a kind of intercommunicating clear-water concrete anti-collision barrier provided by the present invention. What this embodiment provides is that the clear-water concrete for the anti-collision barrier is cast-in-situ when it is applied to the third bid section of the Longhai Road Expressway Project in Zhengzhou City The anti-collision barriers, the main line edge anti-collision barriers are SS-level, and the central anti-collision barriers are Sam-level, which are matched with SS-level and Sam-level guardrails respectively; the anti-collision level of the interchange ramp is SB-level. C30 concrete is used, and the net protective layer of the outermost reinforcement is 30mm. When the guardrail meets the main beam or the expansion joint of the retaining wall, set an expansion joint every 8m-10m at the non-expansion joint of the main beam, with a width of 2cm, fill the joint with asphalt hemp, and apply asphalt paste outs...

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Abstract

The invention relates to the technical field of building construction, in particular to a construction technology of interchange type bare concrete anti-collision guardrails.According to the construction technology of the interchange type bare concrete anti-collision guardrails, concrete template planning is reasonably performed, the template manufacturing and installation technology is improved, the release agent and concrete composition is selected, the concrete mixing and vibrating quality is improved, concrete demolding post-maintenance and protection are enhanced, and other means are adopted, so that the common quality problem of common concrete is eliminated, the overall appearance quality of bridge pier stud concrete is improved, the city appearance and city environment are beautified, and social benefits are improved.According to the construction technology, all construction procedures are improved, the construction scheme is optimized, concrete defects are reduced, the construction period is shortened, resources are saved, economic benefits are improved, and the popularization and application prospects are achieved.The interchange type bare concrete anti-collision guardrails are manufactured and installed, the formed anti-collision guardrails are consistent in color, and no obvious color aberration exists.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction technique for an intercommunicating fair-faced concrete anti-collision guardrail. Background technique [0002] At present, with the objective demand of green buildings, the continuous improvement of people's awareness of environmental protection, and the popular idea of ​​returning to nature, it is necessary to study a set of scientific, reasonable and feasible fair-faced concrete construction methods to eliminate the common quality problems of ordinary concrete and improve bridge quality. The overall perception quality of the anti-collision guardrail concrete can beautify the city appearance and urban environment, and improve social benefits. [0003] Chinese patent CN103215891A discloses a manufacturing process of bridge anti-collision guardrail expansion joints and deformation joints. The steps are: (1) The deformation joint steel plate is process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/10
CPCE01D19/10
Inventor 张俊锋王晓飞穆育茂张冠鑫汤雷涛陈贺宇
Owner CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD
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