Construction method for hanging part of anti-collision guardrail on expressway

Abstract

The invention relates to a construction method for a hanging part of an anti-collision guardrail on an expressway. The construction method comprises the steps that (1) a total station is pre-used to accurately set out the inner side line of the hanging part of the anti-collision guardrail; (2) a ground anchor steel bar is buried on a top plate of a prefabricated box girder, and is fastened with a bottom reinforcing steel tube and an inclined strut steel tube by using a fastener connecting manner, so as to stabilize an inner side template; (3) an outer side template is taken in place by using auxiliary hoisting equipment; (4) a mortar band, which is 2.4cm in height and 5cm in width, is built on the inner side of the inner side template before the inner side template is mounted; and (5), after the templates of the anti-collision guardrail are mounted, a mixer truck is used to be matched with a gantry crane to hoist concrete into the templates, and an immersion vibrator is used to vibrate the concrete, so as to guarantee that the concrete is solid, the color and the lustre are uniform after the templates are detached, and the linearity is attractive. The templates of the anti-collision guardrail disclosed by the invention are simple in structures, materials are ordinary, the processing is convenient, and the cost is lower.

Description

technical field [0001] The invention belongs to the field of building construction, and relates to the construction of an anti-collision guardrail of an expressway, in particular to a construction method for the suspended part of the anti-collision guardrail of an expressway. Background technique [0002] During the construction of the anti-collision guardrail of highway bridges, there are three methods used in traditional construction techniques to fix the formwork of the anti-collision guardrail: 1. External scaffolding for fixed support; 2. Drill holes on the beam and use expansion bolts to fix the outer triangular bracket for formwork support; 3. 1. Use the bottom tie rod to weld on the steel bar of the anti-collision barrier as the support positioning of the formwork. [0003] The first method is used when the bridge height is low, and the cost is relatively high. If the bridge height is high, the use cost will be high; the second method needs to drill holes on the brid...

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Problems solved by technology

[0003] The first method is used when the bridge height is low, and the cost is relatively high. If the bridge height is high, the use cost will be high; the second method needs to drill holes on the bridge, which will affect the appearance of the bridge. impact, the construction is difficult and the cost is not small; although the cost of the third method is not large, the formwork tie rods cannot be reused, the level of the formwork is not easy to control, and the installation is difficult

[0004] Through searching, no published patent documents related to the application of the present invention have been found

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