New Jersey guard bar structure convenient to disassemble and construction method

Abstract

The invention provides a New Jersey guard bar structure convenient to disassemble and a construction method. The New Jersey guard bar structure comprises a precast box beam and a guard bar rebar skeleton. The construction method comprises the steps that construction are arranged; measuring and setting-out are conducted; pre-embedded rebars arrangement is conducted; a sulphur mortar area is poured;rebars are machined and mounted; templates are mounted; concrete is poured; template disassembling and curing are conducted; a mortar protection layer is poured; blocks are connected; and when disassembling is conducted, firstly, a mortar protection layer is crushed, then the sulphur mortar area and the guard bar rebar skeleton are cut off, after nuts among the blocks, steel fasteners and pre-embedded screw rods on the top surface are disassembled, the blocks are hung away one by one, tools are picked up, and field is cleaned.According to the New Jersey guard bar structure convenient to disassemble and the construction method, the technology is reasonable, construction of the New Jersey guard bar with a cast-in-situ structure is simple, in the premise of not reducing the protection effectof the guard bar, the New Jersey guard bar structure convenient to disassemble is adopted, use of large-scale disassembling equipment is avoided, disassembling difficulty is lowered, fast disassembling of the cast-in-situ guard bar is achieved, thus the disassembling efficiency is improved, meanwhile the condition of concrete crushed-block splashing is reduced, and traffic safety is not influenced.

Description

technical field [0001] The invention relates to the technical field of guardrail construction, in particular to an easily dismantled New Jersey guardrail structure and a construction method. Background technique [0002] New Jersey concrete guardrail is a wall-type guardrail with a certain cross-sectional shape, which is widely used in traffic safety projects of various grades of highways in China. Among them, in the reconstruction and expansion projects of expressways, the New Jersey guardrails temporarily used during traffic transitions are generally prefabricated and placed on hard shoulders, and the safety protection is obviously insufficient. In parts with high protection requirements such as bridges, roadbeds and water-facing sections, etc. Generally, the New Jersey guardrail with cast-in-place structure is adopted. [0003] After the cast-in-place structure of the New Jersey guardrail is used, the driveway needs to be closed for concrete crushing, cutting of the conn...

AI Technical Summary

Problems solved by technology

[0003] After the cast-in-place structure of the New Jersey guardrail is used, the driveway needs to be closed for concrete crushing, cutting of the connecting steel bars, and final slag removal to complete the demolition of the guardrail. However, the construction of the cast-in-place structure of the New Jersey guardrail is time-consuming and laborious, and large-scale demolition equipment is required for demolition , there are problems of high demolition difficulty and low demolition efficiency, and the splash of broken concrete blocks will affect driving safety

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