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국회도서관 홈으로 정보검색 소장정보 검색
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결과 내 검색 동의어 포함

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초록보기

 The approach slab is an installation which reinforces a road pavement by securing a flatness of the pavement with a bracket installed back of the abutment. This bracket allows to adjust a layer level difference between the earthwork and the bridge. In mountain valleys and rivers, as part of the geography, vertical alignment consists of artificial tunnels and bridges in the process of installation of such structures due to the lower pavement is comprised of various forms of support. Especially, the damage of the approach slab caused by a differential settlement at the backfill where the bridge and the earthwork are connected is considered as an important problem in terms of service level and of maintenance and management.

The existing concrete approach slab is executed by using same amount of steel for all the different slab of different length. This reduces flatness of the pavement because the pavement will be influenced by a differential settlement easily and because of the lack of bearing capacity when the simple beam moves due to a settlement of backfill. Because of the structural contradictions of a existing approach slab, the introduction of a structural design concept that can overcome these contradictions is necessary.

For this reason, in this study, the structure analysis is used to establish an improved method to secure a flatness of the connected point between an approach slab and a buffer slab. This method will allow reduction of maintenance and management cost and also structural stability.

In this paper, a design method for improving flatness of the connection point and structural stability according to different length of concrete approach slab will be presented based on a results of study. Also, the documents related this subject published in countries all over the world are used as a reference. The flatness of pavement related with an approach slab on the backfill of the abutment is the most problematic issue in road-using. This study that takes first step to resolve such problem suggests to execute verification and research of applicability continually.

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