CAJ | 학술논문

大跨度缆索承重桥梁桥塔模型试验研究多采用大比例节段模型为研究对象，但该节段模型无法完整反映索塔的整体受力机理。文章采用1∶10大比例全模型，对马鞍山长江大桥右叉斜拉桥的拱形索塔进行试验研究，解决了模型试验设计中的恒载补偿设计、拱塔环向预应力加载和斜拉索张拉模拟等关键技术问题；采用等应变原理设计拱塔模型，并模拟了斜拉索拱塔的受力特性。研究结果表明，除个别点位外，试验结果与有限元数值模拟结果的误差不超过15％。该研究对马鞍山长江大桥右叉斜拉桥以及类似工程的设计和施工均具有借鉴作用。
대과도람색승중교량교탑모형시험연구다채용대비례절단모형위연구대상，단해절단모형무법완정반영색탑적정체수력궤리。문장채용1∶10대비례전모형，대마안산장강대교우차사랍교적공형색탑진행시험연구，해결료모형시험설계중적항재보상설계、공탑배향예응력가재화사랍색장랍모의등관건기술문제；채용등응변원리설계공탑모형，병모의료사랍색공탑적수력특성。연구결과표명，제개별점위외，시험결과여유한원수치모의결과적오차불초과15％。해연구대마안산장강대교우차사랍교이급유사공정적설계화시공균구유차감작용。
Large‐scale sectional model is commonly adopted in the pylon test research on long‐span ca‐ble supported bridges , w hereas sectional pylon model can not reflect and describe the mechanical mechanism of w hole pylon .In this paper ,the full‐size model at the scale of 1∶10 is used for the test research on the arch pylon of cable‐stayed bridge of Ma’anshan Yangtze River Bridge .Several key technical problems of full‐size model test research are solved ,such as dead load compensation ,loading method of circumferential reinforcement ,and the simulation of cable tension .T he equal strain princi‐ple is used to design the arch pylon model ,and the mechanical performance of bridge pylon is accu‐rately demonstrated .The research result shows that the error between the test results and the finite element numerical simulation results is not more than 15% except several points .The study is valua‐ble for the design and construction of Ma’anshan Yangtze River Bridge and other similar bridges .