The Affection Elements For Ensuring Designing Height Of River-crossing Bolds

This article bases on the characters of Hei Long Province's flood and combines a lot of facts in project. So this article analyses deeply in the method of ensur'my designing food rolume which is an important element to affect the "designimy height of bridge" It brings forward an "arverage optiminmy suiting line"method which is a bondage discommode series At the same time it puts forward a ensurmy principle for rough coefficient" and "fallimy flood proportion which are both suitable to HeiLongjiang province At last this article introduces the "three-days rainimy rolume" method. All the method hare been proved in project to improve the accuracy of designimy rolume of fold When they are used in practice they will also improve the accruing of any desighmy river-crossing bridge...