Artificial filling island airport runway structure and construction method thereof

Abstract

The invention discloses an artificial filling island airport runway structure and a construction method thereof. The pavement structure is sequentially provided with a wearing layer, a geocell solidification layer, a geocell coral sand mattress layer and a long and short pile composite foundation layer from top to bottom. The geocell solidification layer is formed by filling a geocell with solidifiable cement coral sand; the geocell coral sand mattress layer is formed by filling and blow-filling coral sand in a geocell; coral sand dredger fill is used as a material, ordinary Portland cement and water are used as a curing agent, and the materials are mechanically stirred to form a flow-state curable mixture with certain fluidity. Compared with a traditional artificial island reef runway construction technology, the airport runway constructed through the method has the advantages of being small in post-construction settlement and differential settlement, low in construction cost, short in construction period, free of cracking of the runway surface, long in service life, high in blast damage resistance and the like.

Description

technical field [0001] The invention belongs to the field of pavement, in particular to an artificially filled island and reef airport runway structure and a construction method thereof. Background technique [0002] Building airports on islands and reefs requires a huge amount of work, high security requirements, and difficult maintenance. Under the influence of special marine environment and strong artificial activities, coral islands and reefs are facing more complicated and unpredictable problems of surface subsidence and deformation. [0003] Taking Meiji Island as an example, the island reef is located in the central and eastern waters of my country's Nansha Islands. It is formed by the growth and development of corals and is a typical calcareous island reef. The land reclamation project was completed in 2015, and the reef flat dredging material is mainly coral sand. The island reef airport project will be completed in the first half of 2016, and all indicators have ...

AI Technical Summary

Problems solved by technology

When the multi-wheel landing gear passes a certain point of the pavement structure, the wheels at a certain distance from each other will produce stress interference and superposition at a certain depth of the pavement, and the depth of dynamic load influence can exceed 10 m, resulting in difficult permanent deformation of the base layer. predict

Images