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Title |
Behavior of Floating Base Plate by Stress Delivery Mechanism
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Keywords |
부양형 팽이기초 ; 탑-베이스 팽이기초 ; 지지력 ; 침하량 ; 응력분산각 Floating base plate ; Top-base foundation ; Bearing capacity ; Settlement ; Stress dispersion angle |
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Abstract |
Up to now, common studies of top base have concentrated upon bearing capacity and settlement by in-situ loading test in Japan and Korea. But most of all preceding study for top base must analyze how to deliver overburden loading on bottom of foundation. Therefore, in this study, the stress delivery mechanism of Top-Base Foundation developed in Japan and Floating Top Base developed in Korea is investigated through numerical analysis and laboratory model test. Analyzing the load delivery mechanism of top base, it was found that the division rate of load reduction of top base for overburden load was largest in peripheral skin friction between the top base and the crushed stone. Further, total stress dispersion angle of Top-Base Foundation including internal stress dispersion effect of top base was 41.8° and total stress dispersion angle of Floating Top Base was 44.5°.
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