摘要
支撑轴力和变形是验证围护结构设计是否合理、施工期是否安全的重要依据，长期以来其现场的实测值和设计值始终存在很大的差异，使监控实际上处于失控的情况。为了提高设计水平，保证基坑的施工安全，使其处于完全有效的控制之中，通过试验研究，认为受长期荷载作用的混凝土支撑，必须考虑非荷载因素的影响，并提出了相应计算理论和计算方法。工程实例证明此理论是正确的，计算结果是合理的，并在上海正大广场围护结构现场试验中得到验证和肯定。
The support structure is generally composed of the piles, soil, and braces. A design theory and method for a reinforced concrete brace are proposed in the paper. That is based on a great number of the site tests. Some non-load factors effected on the behavior of brace are considered. How to measure the axial force and deformation of a brace is very important. Usually the measured values are differed widely with that of the design. The results show that the proposed theory and method are feasible.
出处
《土木工程学报》
EI
CSCD
北大核心
2000年第5期83-87,96,共6页
China Civil Engineering Journal
关键词
支护结构
轴力测试
混凝土支撑
围护结构
support structures measurement of axial force, concrete, non-load factors
