大跨越高压输电塔体系抗震问题的进一步研究

The high voltage system consisting of transmission lines and their supporting towers is an important lifeline engineering one. It is quite difficult to exactly compute its seismic response in the seismic design. In this project, the generally simplified model of aseicmic calculation of the transmission tower are presented and the equations of motion are derived. The shaking-table test is carried out to verify the reasonability of the proposed models. Moerover, the approach is established to estimate the damage of transmission tower system in the considerations of nonlinear and stable characteristics. A computer program compiled is used to calculate the seismic responses of high voltage transmission tower under the action of earthquake. And the limit span of lines that should be considered to be important in the seismic response of high voltage transmission tower is determined based on the analyses of earthquake responses of lots of transmission towers. The simplified method of aseicmic calculation is presented for the applicable design of transmission tower-lines coupled system.

进行大规模高压输电塔—导线耦联体系的动力试验和破坏试验；建立在动力荷载作用下考虑几何非线性影响的理论破坏模式，给出其计算公式和计算方法，编制相应的计算机程序；定量地给出高压输电塔动力计算需考虑导线影响的限值；提出可供工程应用的简化抗震设计方法。这些研究为减轻输电塔体系震害及制定有关的设计规程提供科学依据。..