한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2010년도 춘계 학술발표회
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- Pages.666-672
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- 2010
실내평가기법에 의한 새로운 격자지보재의 하중지지력 평가
Load Bearing Capacity Evaluation of New Lattice Girder by Laboratory Test Techniques
- Choi, Young-Nam (Dept. of Civil Engineering, Dongguk University-Seoul) ;
- Kim, Dong-Gyou (Korea Institute of Construction Technology) ;
- Bae, Gyu-Jin (Korea Institute of Construction Technology) ;
- Jang, Yeon-Soo (Dept. of Civil Environment Engineering, Dongguk University-Seoul)
- 발행 : 2010.03.25
초록
Load bearing capacity of new lattice girder has been evaluated with optimized spider for lattice girder utilized in the construction of tunnels. This newly developed lattice girder is different from existing lattice girder as its design is associated with existing spider with newly developed 2 types of form. The spacing of lattice girder's spider is linked with the weight and it decides the unit cost and construction therefore, different spacing of the developed spider has been produced to evaluate the measurement of load bearing capacity. As the result of the tests by producing the spacing of spider as 0cm and 4cm for developed lattice girder-2, the load bearing capacity of 0cm with spacing of 21%, and 4cm with 25% of increase when they are compared with the existing lattice girder, and the weight of specimen was decreased. As the result of the tests by producing the spacing of 1cm and 6cm for developed lattice girder-3, the spacing of 1cm with 42%, and the spacing of 6cm with 11% of increase which presented higher load bearing capacity in all newly developed forms, and there was a certain degree of increase in weight in case of 1cm of spacing. The result of evaluation regarding on the displacement by applying the evaluation method suggested by the German Railroad administration, the entire specimens were found to satisfy all the evaluation standard suggested by the administration.