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本文先介绍国外学者在发展特大跨斜张桥的构思中所遇到的两大难题及其对策:对主梁跟部压力过大与悬桥半跨主梁太长,均用加设地锚来解决。而作者则将不用地锚也能解决问题的经济安全办法陈述于后,以供比较选用。
This paper first introduces the two major problems that foreign scholars encountered in the development of the concept of large span diagonal tension bridge and its countermeasures: the pressure on the heel and heel is too large and the suspension bridge half-span is too long, . The author will not be able to solve the problem of the anchor and the economic security measures described later for comparison.