摘要
我国近10年来在地震区相继建成了一批钢筋混凝土圆筒承重的电视发射塔。为第11届亚运会修建的北京中央电视塔就是其中之一。该塔自圆筒的塔身、悬于其上的塔楼和混凝土与钢制成的天线塔杆所组成,它的总高度超过400m。为了研究电视塔结构的动力性能,在常遇地震作用下的反应,和在罕遇强烈地震作用下可能出现的破坏形态,依据该电视塔的结构原型按相似律准则制做了一个8m高的电视塔结构模型,在大型振动台上进行了系列的试验研究。 从试验中得到了电视塔结构的动力性能,和在强烈地震作用下电视塔的破坏机理与形态。试验结果为该电视塔的抗震设计提供了依据。
A number of R.C. television towers have been constructed in the seismicregions of China during recent years. The CCTV Transmission Tower is com-posed of a shaft, overhanging on which are a viewing room, several equipmentrooms, and a steel antenna pole. Total height of the Tower is over 400m. Inorder to investigate the dynamic characteristics, response to the earthquakesfrequently occurred and damage to the Tower in strong earthquakes accidental-ly occurred, a 8 m- high test model was made based on the principle of simu-lation, and a series of experiments had been done on a large-scale shaking ta-ble. The experimental results reveal the earthquake performance, damage mech-anism and patterns of the Tower under earthquakes of high intensities. Theresults also provide a basis for the seismic design of the Tower.
出处
《土木工程学报》
EI
CSCD
北大核心
1992年第4期1-14,共14页
China Civil Engineering Journal
基金
国家自然科学基金
