本文選題：混凝土　切入點(diǎn)：橋梁工程　出處：《施工技術(shù)》2015年18期

【摘要】：通過對大體積混凝土溫度裂縫產(chǎn)生原因的分析,結(jié)合海工混凝土性能要求及廈漳跨海大橋工程特點(diǎn),研究海洋環(huán)境下大體積混凝土溫控關(guān)鍵技術(shù)。根據(jù)現(xiàn)場工況,對不同類型的海工大體積混凝土進(jìn)行溫控計算并制定相應(yīng)溫控措施,即優(yōu)化海工混凝土配合比、控制混凝土澆筑溫度、改善混凝土施工性能、通循環(huán)冷卻水對混凝土進(jìn)行內(nèi)部降溫、采取表面保溫保濕養(yǎng)護(hù)措施等。編制可操作性強(qiáng)的溫控施工方案以指導(dǎo)全橋大體積混凝土溫控施工,對主橋承臺、塔柱、引橋承臺等關(guān)鍵構(gòu)件進(jìn)行現(xiàn)場溫度監(jiān)控指導(dǎo),根據(jù)測溫結(jié)果及時調(diào)整溫控措施,有效控制海洋環(huán)境下混凝土有害溫度裂縫的產(chǎn)生。
[Abstract]:Based on the analysis of the causes of temperature cracks in mass concrete, combined with the performance requirements of marine concrete and the engineering characteristics of Xia-Zhang Bridge, the key technology of temperature control of mass concrete in marine environment is studied.According to the field working conditions, the temperature control calculation and the corresponding temperature control measures are made for different types of large volume concrete of sea engineering, that is, optimizing the mix ratio of marine concrete, controlling the pouring temperature of concrete, and improving the construction performance of concrete.The circulating cooling water is used to cool down the concrete, and the surface heat preservation and moisturizing measures are taken.To draw up a temperature control construction plan with strong maneuverability to guide the whole bridge mass concrete temperature control construction, to supervise and guide the key components such as the main bridge cap, tower column, approach bridge cap and so on, and to adjust the temperature control measures in time according to the temperature measurement results.Effectively control the occurrence of harmful temperature cracks in concrete under marine environment.
【作者單位】： 招商局重慶交通科研設(shè)計院有限公司;
【分類號】：U445.57

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 胡紅梅;王昊;沈雅雯;杜榮歸;鄭鉑q，

本文編號：1707709