摘要
本文结合佛子岭连拱坝(以下简称佛坝)13#垛的裂缝观测资料探讨裂缝开合度的统计模型并用该模型对铅直缝(施工运行期产生的裂缝)和纵缝(人工设置缝)进行统计分析.通过对水压分量K_H、温度分量K_T以及时效分量Kθ的分解,得到裂缝开合度的变化规律及其裂缝产生和扩展的最不利荷载组合,以及裂缝随水位、温度变化的"驻点".从而可进行大坝的安全监控.
In this paper, statistical models of opening-closing degrees of cracks are worked out on the basis of the crack observation data of Foziling Multi-arch Dam The proposed statistical models are used to analyze vertical cracks (developed in the period of construction and operation)and longitudinal joints.Through the resolution of water pressure (K_H), temperature (K_T) and time effect (K_θ), the variation regulavity of opening-closing degrees of cracks and the most unfavour-able load combination which will cause the creation ned development of cracks have been obtained. Further more, the 'halt point' has also been obtained, which change. with water level and temperature. These results can be applied to the monitoring of Foziling Malti-arch Dam.
出处
《大坝观测与土工测试》
北大核心
1989年第1期3-9,共7页
Dam Observation and Geotechnical Tests
