Roadbed concrete guard bar reuse construction method

Abstract

The invention relates to a roadbed concrete guard bar reuse construction method, and belongs to the field of traffic safety protection. The roadbed concrete guard bar reuse construction method includes the following steps: (1) producing concrete precast blocks; (2) assembling the concrete precast blocks, and forming a temporary guard bar; (3) longitudinally disconnecting the concrete precast blocks while demounting the guard bar, and then transferring the concrete precast blocks for use; and (4) arranging the concrete precast blocks as a roadbed guard bar for reuse. The roadbed concrete guard bar reuse construction method is simple and reasonable, is short in construction period, can effectively allow reuse of the roadbed concrete guard bar, can reduce the cost and simplify the construction for reconstruction and extension projects, can simplify a construction manner, and satisfies the project construction idea of resource saving and environment protection.

Description

technical field [0001] The invention relates to a construction method for reusing roadbed concrete guardrails, and belongs to the field of traffic safety protection. Background technique [0002] In recent years, my country's expressway construction has developed rapidly. The completion and operation of expressways have greatly facilitated the travel of the masses and the economic development of various places along the way. However, with the rapid growth of my country's economy and the vigorous development of road transportation, the traffic volume has increased rapidly, especially the increase in large and heavy-duty vehicles, which directly led to the increase in the frequency and load of road transportation facilities. Many expressways built in the early days have been According to incomplete statistics, about 30,000 kilometers of expressways built before 2004 have entered the stage of reconstruction and expansion. [0003] At present, the "passage protection" policy is ...

AI Technical Summary

Problems solved by technology

Temporary guardrails are divided into prefabricated and on-site pouring. The anchoring force of the prefabricated concrete guardrail foundation is insufficient, resulting in low protective performance of the guardrail, poor protection for large vehicles, and insufficient safety protection capabilities; the concrete foundation of the concrete guardrail in the middle of the cast-in-place subgrade is firmly connected It can achieve high protection performance, but the construction method is relatively complicated, and it is not convenient for on-site construction under the condition of "guarantee", and the dismantling after installation is usually destructive demolition, which cannot be reused

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