Airfield pavement structure with box-type shock-isolation foundation

Abstract

The invention relates to an airfield pavement structure with a box-type shock-isolation foundation. The structure consists of a surface layer and a base layer, wherein the surface layer is a concrete pavement, directly bears the loads of airplanes and is positioned above the base layer; the base layer is the box-type shock-isolation foundation, has the effect of bearing loads and is positioned below the surface layer; the box-type shock-isolation foundation is placed on a foundation; and the concrete pavement is arranged on the box-type shock-isolation foundation. The concrete pavement is made of the common cement and asphalt concrete for the airfield pavement; the box-type shock-isolation foundation consists of a top board, an outer wall, a transverse wall, a longitudinal wall, a bottom board and a shock-isolation support; the bottom board is arranged on the foundation; the outer wall, the transverse wall and the longitudinal wall are divided into an upper part and a lower part, the lower part and the bottom board are poured into a whole, and the upper part and the top board are poured into a whole; and both parts are connected by the shock-isolation support. The airfield pavement structure is a novel airfield pavement structure suitable for complicated foundations such as mountainous areas, mollisol and the like, has strong capacity of adjusting differential settlement of the foundation and reduces foundation treatment difficulty; and the shock-isolation structure can maintain the normal using function of the airfield pavement under the earthquake action.

Description

(1) Technical field: [0001] The invention relates to an airport pavement structure, in particular to a box-type seismic isolation foundation airport pavement structure, which belongs to the technical field of basic structures and materials in road traffic engineering. (2) Background technology [0002] With the rapid development of my country's air transport industry, some coastal cities have built airports on weak foundations, such as Zhuhai Airport. The soil layers in the field are staggered and highly variable. bit close to the surface. With the vigorous development of regional aircraft by the country, regional airlines have also begun to build their route network, mainly concentrated in the southwest, northwest, Xinjiang and other places with complex terrain, landform and geological background conditions, such as Kunming Xiaoshao Airport, where karst is developed, Caves and funnels are dotted all over. At present, the development direction of airport construction sites ...

AI Technical Summary

Problems solved by technology

Weak foundations generally cannot meet the high standard requirements for foundation deformation of airport runways, so large-area and deep foundation treatment is required for the foundation; (2) High filling problems for airport construction in mountainous areas

The flight areas of airports in mountainous areas in the west generally require high filling and deep excavation, and the amount of earth and stone works is huge. For example, the maximum filling height of Lincang Airport reaches 52m, and that of Jiuzhai Huanglong Airport in Sichuan even reaches 100 meters. The foundation and filling stability problems are prominent, and the new Relatively frequent tectonic activities, poor regional crustal stability, and low seismic safety of the site

(3) Construction of offshore airports

However, for airports built on foundations with complex engineering geology, such as Shanghai Pudong International Airport (Phase I), Zhuhai Airport, Ningbo Airport, and Sichuan Panzhihua Airport, it is relatively difficult to meet these strict settlement control indicators during the operation period. Difficult, in order to meet this standard, large-volume foundation treatment is required, and from engineering examples, the settlement of the airport after several years of operation mostly exceeds the design settlement

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