Reinforcement method for soft foundation of new highway engineering

Abstract

The invention discloses a treatment method for strengthening soft foundations of newly-built highway engineering, which comprises the following steps: step 1, positioning on the foundation to be treated, and burying a row of prestressed pipe piles, and the distance between the prestressed pipe piles is set to 40 ‑80cm; set a row of prestressed pipe piles before the set prestressed pipe piles, and set the distance between the front and rear pipe piles to 50‑100cm; repeat the prestressed pipe piles in sequence, and the front and rear pipe piles are staggered; step 2, preparation Soil binder dilution, the soil binder dilution is evenly injected into different depths of the foundation through a dispersing injection device, so that the surrounding soil is bonded to each other; at the same time, tamping and leveling are carried out; step 3, laying graded on the leveled foundation A gravel cushion, and then lay a sand cushion to the port of the prestressed pipe pile; step 4, lay a steel grid frame above the port of the prestressed pipe pile, and then pour concrete to complete the reinforcement of the weak foundation. The invention effectively avoids foundation subsidence and ensures the smoothness and integrity of the road.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a treatment method for strengthening weak foundations of newly-built highway projects. Background technique [0002] With the rapid development of the economy, the rapid growth of traffic volume, the increasing demand for load capacity, the growth of large trucks and traffic volume have caused great challenges to today's highways, especially the current traffic demand, in order to ensure people's travel convenience , the construction of many roads is inevitably built on weak foundations. In order to ensure the service life of roads and the safety of driving vehicles, it is particularly important to reinforce weak foundations during the construction of roads. Nowadays, for the reinforcement of weak foundations, The soil replacement method, the drainage consolidation method and the deep mixing method are mainly used, but the soil replacement method has a large workload, w...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the economy, the rapid growth of traffic volume, the increasing demand for load capacity, the growth of large trucks and traffic volume have caused great challenges to today's highways, especially the current traffic demand, in order to ensure people's travel convenience , the construction of many roads is inevitably built on weak foundations. In order to ensure the service life of roads and the safety of driving vehicles, it is particularly important to reinforce weak foundations during the construction of roads. Nowadays, for the reinforcement of weak foundations, The soil replacement method, the drainage consolidation method and the deep mixing method are mainly used, but the soil replacement method has a large workload, while the drainage consolidation method has a poor reinforcement effect, and deep mixing requires a large power. more difficult

In order to ensure that the road bears a certain weight and pressure without sinking and cracking, the treatment of weak foundations remains to be studied

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