unsupported height

This paper makes analysis of one disputable clause in the Technical Specification for High-rise Building with Concrete Structure——the unbraced length of the hoop reinforcement should be no longer than 300mm,and it also gives a reasonable explanation.

文章对《高层建筑混凝土结构技术规程》(JG J3-2002)中的一个有争议的条文(箍筋的无支长度不应大于300m m)进行了分析,并给出了一个较合理答案。

The main parameters of the hydraulic support,such as working resistance,setting load and support height are analyzed.

对该类支架的工作阻力、初撑力、支护高度等主要参数进行了分析计算。