后浇带设置对多跨框架结构温度应力的影响分析  

Analysis of the Influence of Post-Cast Strip on the Temperature Stress of Multi-Span Frame Structure

作　　者：白玉星 周朋飞 张宏涛 汤佳菲 

机构地区：[1]北方工业大学土木工程学院,北京100144 [2]中国航发北京航空材料研究院,北京100089

出　　处：《北方工业大学学报》2017年第5期100-104,139,共6页Journal of North China University of Technology

摘　　要：多跨钢混框架结构经常会遇到温度裂缝的问题,若没有采取有效的控制措施,裂缝将对建筑物的耐久性甚至安全造成一定影响.工程多采用设置后浇带以减少温度应力的不利影响,本文基于静力平衡法分析了后浇带设置对多跨框架结构温度应力的影响,得出对于100米超长混凝土结构承受季节降温15℃时最佳后浇带设置条数为1条.Temperature cracks often occur in multi-span reinforced concrete frame structure,and the cracks will impair the durability and even the safety of buildings if no effective measures are taken.Setting post-cast strip is a common measure to reduce adverse effects in civil engineering.This paper analyses the effect of the setting of post-cast strip on the temperature stress of multispan frame structure,and concludes that the optimal number of post-cast strip of 100 meters superlong concrete structure is one when the temperature seasonally goes down to 15 degrees centigrade.

关 键 词：后浇带 温度应力 收缩 多跨框架结构 

分 类 号：TU323[建筑科学—结构工程]