A roadbed filling method of prefabricated concrete pipe joint reinforced light soil

Abstract

The invention discloses a roadbed filling method of prefabricated concrete pipe section reinforced light soil. The method includes the following steps that firstly, the heights and the sizes of the inner edges and the outer edges of the cross sections of concrete pipe sections required by different positions of a roadbed are determined; secondly, step-type excavation and grading are longitudinallyconducted on the non-light-soil roadbed; thirdly, a cushion layer is arranged on the first layer; fourthly, the pipe sections are bound, and ring beams and lateral baffles are arranged; fifthly, thelight soil is poured; sixthly, the pipe sections in the same outer edge size on the second layer are arranged in a staggered mode; seventhly, the light soil is poured to the second layer; and eighthly, the above steps are repeated until the preset light soil filling height is reached, impermeable geotechnical cloth is laid on the light soil, and a drainage system and a pavement structural layer are arranged on the light soil. The filling method accords with the assembly type architectural concept, the prefabricated concrete pipe sections have the effects of a reinforced net and a building template at the same time, construction is quick, and the requirements of different portions of the roadbed for strength can be met through adjustment of the sizes of the pipe sections; and the roadbed ishigh in integrity, and the bearing capacity of the roadbed is improved.

Description

technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to a roadbed filling method of prefabricated concrete pipe joints reinforced with lightweight soil. Background technique [0002] With the rapid development of the national economy, from the city to the mountainous area, from the coast to the inland, highways, urban expressways and other transportation methods have been widely constructed, but the post-construction subsidence of the subgrade is relatively large, the subsidence of the road surface is uneven, and the subgrade of high slopes is cracked. Problems such as collapse and bridge head jumping seriously affect the safety and comfort of driving. Roadbed filling is traditionally handled through subgrade foundation treatment and strict earthwork backfilling. However, due to the long distance of soil transportation, heavy soil mass and poor stability, the current roadbed filling effect is not ideal. Lightweight...

AI Technical Summary

Problems solved by technology

However, in practical application, the whole layer of light soil filling is generally required to be less than 1m in thickness per layer, and building formwork needs to be arranged, the construction progress is slow, and the integrity is poor; light soil reinforcement mostly adopts transverse reinforcement or The laying of steel mesh is expensive, easy to rust, and the integrity is not strong. For example, when the load is applied, it is easy to produce voids, and the influence of the internal reinforcement of the reinforced light soil road gene cannot be detected by radar

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