论文部分内容阅读
许多结构中用轻质混凝土代替正常的重量混凝土,是经济的、有益的。由于上部结构的恒载轻了20～30％,所以这种经济性一般反映在基础设计中。节约多少的程度取决于:(a)支配上部结构设计类型的工地条件;(b)轻集料的可用性和价格;(c)高强钢的价格(如果是预应力混凝土)可以用来抵消由于徐变和收缩引
It is economical and beneficial to use lightweight concrete instead of normal weight concrete in many structures. Since the overhead load is 20 to 30% lighter, this economy is generally reflected in the basic design. The degree of savings depends on: (a) site conditions that govern the superstructure design type; (b) the availability and price of light aggregate; (c) the price of high strength steel (if prestressed concrete) Change and shrink cited