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Safety construction method of cast-in-place reinforced concrete crash barrier

A technology of reinforced concrete and anti-collision guardrails, which is applied to bridge parts, erection/assembly of bridges, bridges, etc., can solve problems such as large overturning risks, achieve the effect of enhancing anti-overturning ability and ensuring construction safety

Inactive Publication Date: 2018-11-13
WISDRI ENG & RES INC LTD +1
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  • Abstract
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  • Application Information

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Problems solved by technology

In the existing construction, the hanging basket is suspended on the cantilever beam of the self-propelled trolley, and the construction method of the hanging basket has a large risk of overturning

Method used

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  • Safety construction method of cast-in-place reinforced concrete crash barrier
  • Safety construction method of cast-in-place reinforced concrete crash barrier

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] see figure 1 and figure 2 , a kind of safe construction method of cast-in-place reinforced concrete anti-collision guardrail, it comprises the steps:

[0024] When the cast-in-place concrete box girder 6 is laid with roof reinforcement, lug-shaped pre-embedded reinforcement 4 is installed on the web of the box girder along the direction of the bridge; Length, to reduce the amount of pre-embedded steel bars while ensuring convenient construction;

[0025] After the box girder roof 8 is poured, the pre-embedded steel bar 4 is closely combined with the concrete, and the part higher than the...

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Abstract

The invention discloses a safety construction method of a cast-in-place reinforced concrete crash barrier. The method includes the following steps that when top plate reinforcing steel bars are arranged on a cast-in-place concrete box girder, lifting-lug-shaped embedded reinforcing steel bars are installed in the position of a box girder web in the bridge direction; after a box girder top plate ispoured, the embedded reinforcing steel bars are tightly combined with concrete, and the portions, higher than the concrete, of the embedded reinforcing steel bars are each in a lifting lug shape; a hanging basket is connected with a self-propelled trolley through a cantilever beam; the self-propelled trolley moves in the bridge direction, and after the self-propelled trolley walks to a preset construction position, a steel rope on a trolley tail of the self-propelled trolley is connected with the embedded reinforcing steel bar closest to the self-propelled trolley and fixed through an anti-separation clamp; and a worker enters the hanging basket to conduct construction operation. The overturning risk of the hanging basket can be reduced when a formwork on the outer side of the crash barrier is installed and detached.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a safe construction method of cast-in-place reinforced concrete anti-collision barriers. Background technique [0002] Cast-in-situ concrete box girder is a common form of bridge. The construction process steps of its anti-collision guardrail are erecting steel skeleton-supporting formwork-pouring concrete-removing formwork. Among them, the installation and removal of the outer formwork of the guardrail requires workers to operate on the outside of the bridge. And this operation needs to use the hanging basket as the worker's operating platform. In the existing construction, the hanging basket is suspended on the cantilever beam of the self-propelled trolley, and the construction method of the hanging basket has a large risk of overturning. Contents of the invention [0003] The object of the present invention is to provide a safe construction method fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/10E01D21/00
CPCE01D19/103E01D21/00
Inventor 王君
Owner WISDRI ENG & RES INC LTD
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