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顧德強(qiáng)
（上海電子工程設(shè)計(jì)研究院有限公司，上海200023）

[摘要] 混凝土收縮和溫度變形是工程結(jié)構(gòu)上不容忽視的問(wèn)題，現(xiàn)行《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》(GB50010)的主導(dǎo)處理方法還是限制混凝土結(jié)構(gòu)的伸縮縫間距，而用戶的要求或?yàn)榻Y(jié)構(gòu)設(shè)計(jì)上的便利，實(shí)際工程往往突破了規(guī)范的限值。目前對(duì)伸縮縫間距超過(guò)規(guī)范標(biāo)準(zhǔn)的情況，處理方法基本上都是著力于抵抗變形或減小混凝土材料的收縮。本文提出一種新的方法—一單柱雙梁法，此方法著眼點(diǎn)不是如何延長(zhǎng)伸縮縫的間距，而是在規(guī)范規(guī)定的伸縮縫允許間距范圍內(nèi)，通過(guò)在限定的部位釋放掉混凝土的收縮應(yīng)力和溫度應(yīng)力，以達(dá)到控制結(jié)構(gòu)的收縮和溫度變形，方法簡(jiǎn)單，作用可靠。
[關(guān)鍵詞] 混凝土收縮 溫度變形 伸縮縫 單柱雙梁

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