retaining walls

A method to ascertain airtightness of regulable refrigeratory, airtightness material selection and a way to made air retaining wall were discussed in this paper.

论述了气调库气密性确定方法,气密材料选择及气密层做法,介绍了用正压法检测气调库气密性具体程,并给了国内同气密性标准。

Counterfort retaining walls are optimized in the paper, using the optimum program, costs of different counterfort retaining wall parameters were calculated and based on the contrast analysis.

本文对扶壁式挡土墙进行优化计算,利用优化设计程序对同参数下截面状态和工程造价进行分析比较。