顾德强
（上海电子工程设计研究院有限公司，上海200023）

[摘要] 混凝土收缩和温度变形是工程结构上不容忽视的问题，现行《混凝土结构设计规范》(GB50010)的主导处理方法还是限制混凝土结构的伸缩缝间距，而用户的要求或为结构设计上的便利，实际工程往往突破了规范的限值。目前对伸缩缝间距超过规范标准的情况，处理方法基本上都是着力于抵抗变形或减小混凝土材料的收缩。本文提出一种新的方法—一单柱双梁法，此方法着眼点不是如何延长伸缩缝的间距，而是在规范规定的伸缩缝允许间距范围内，通过在限定的部位释放掉混凝土的收缩应力和温度应力，以达到控制结构的收缩和温度变形，方法简单，作用可靠。
[关键词] 混凝土收缩 温度变形 伸缩缝 单柱双梁

Probe into handling method of constringency of out of length concrete structure
Gu Deqiang
(Shanghai Electronics Engineering Design & Research Institute Co., Ltd, Shanghai 200023, China)

Abstract: The shrinkage and temperature deformation of concrete is a problem can't be ignored in construction, the main method of active《Code for design of concrete structures》(GB50010)  is limiting the space of contractility joint. But in practice of construction, the limitation of technical code is always exceeded because of the demand of customers or convenience in design. Most adopted measures for this situation are concentrated on resisting the deformation or reducing the shrinkage of concrete. A new method-one column with two beams method was proposed to avoid to extend the space of contractility joint but to release the shrinkage stress and temperature stress ingiven place of concrete. In the application of this method, the shrinkage of structure and temperature deformation can be controlled simply and reliably.
Keywords: shrinkage of concrete; temperature deformation; contractilityjoint; one column with two beams