本文關(guān)鍵詞： 環(huán)境溫度 混凝土箱梁 溫度監(jiān)測 溫度裂縫 演化規(guī)律　出處：《硅酸鹽通報》2017年10期 　論文類型：期刊論文

【摘要】：通過考慮不同地域、季節(jié)、溫度時段大體積混凝土內(nèi)外溫差、表面與環(huán)境溫差,探討了32 m單箱單室預(yù)應(yīng)力混凝土箱梁的溫度場分布的變化以及兩類溫差的變化規(guī)律,采用midas軟件模擬了環(huán)境溫度變化在混凝土箱梁中產(chǎn)生的效應(yīng),初步探明了當(dāng)環(huán)境發(fā)生較大變化時兩類溫差的演變特性。研究結(jié)果表明,當(dāng)晝夜溫差大于10℃時,混凝土內(nèi)外溫差、表面與環(huán)境溫差可發(fā)生較顯著的變化。根據(jù)模擬結(jié)果,設(shè)計了基于環(huán)境條件變化特征的溫度測點(diǎn)設(shè)置方案,揭示了不同環(huán)境下混凝土箱梁的溫度場分布及演化規(guī)律。
[Abstract]:Considering different regions, seasons, temperature periods, internal and external temperature difference of mass concrete, surface and environment temperature difference, the variation of temperature field distribution of 32 m single box single chamber prestressed concrete box girder and the variation law of two kinds of temperature difference are discussed. The effect of ambient temperature change on concrete box girder is simulated by midas software, and the evolution characteristics of two kinds of temperature difference are preliminarily investigated when the environment changes greatly. The results show that when the temperature difference between day and night is greater than 10 鈩，

本文編號：1531619