실내모형시험을 통한 내재해형 온실 파이프 줄기초의극한인발저항력 산정식 개발

Abstract

Damage caused by meteorological disasters in domestic greenhouses is increasing. Since 2007, Ministry of Agriculture, Food and Rural Affairs, andRural Development Administration have been offering the design standards and specifications for disaster-resistant greenhouse. In a single-typegreenhouse specifications, continuous pipe foundations are used to increase the uplift capacity. However, there is no content on the evaluation methodof the ultimate uplift capacity. In this study, the uplift capacity characteristic according to the shape of the continuous pipe foundation was analyzedfor the prediction of the ultimate uplift capacity. The ultimate uplift capacity was measured through laboratory model test. The ultimate uplift capacitywas analyzed by installing continuous pipe foundations with different relative density, continuous pipe diameter, rafter spacing, and unit of rafters. Atheoretical equation for the ultimate uplift capacity of continuous pipe foundation was proposed, considering existing theoretical equations for stripfootings, pipelines, and piles. The uplift capacity calculated using estimation equation was compared with experimental values for verification, showedthe highest correlation with the model test results, and produced the smallest error. Allowable ultimate uplift capacity of continuous pipe foundationcan be estimated by taking into account an appropriate safety factor