- 陳 思
2020年第6期
摘要
引用本文
摘?要:通過單因素控制變量試驗,研究了預應力筋張拉控制應力與分布情況對部分預應力混凝土疊合板底板變形與抗裂性能的影響。試驗結果表明,隨著張拉控制應力與預應力筋分布根數的增加,疊合板底板撓度降低,抗裂性能得到極大改善。當預應力筋張拉根數為7根時,張拉控制應力從0.4fptk遞增至0.7fptk,構件撓度降低了22.1%,裂縫最大寬度降低幅度可達50.0%。Abstract:Throughsinglevariable-controlledtest,theeffectsofthetensioncontrolstressandthedistributionofprestressedtendononthedeformationandcrackresistanceofpartiallyprestressedconcretecompositeslabswerestudied.Theresultsshowthatwiththeincreaseofthetensioncontrolstressandthenumberofprestressedtendons,thedeflectionofcompositeslabcanbedecreased,meanwhileitscrackresistanceisgreatlyimproved.Whenthenumberofprestressedtendonsis7,thetensioncontrolstressprogressivelyincreasesfrom0.4fptkto0.7fptk,andthedeflectionofcomponentsaredecreasedby22.1%,andthedecreasingrangeofmaximalbreadthofcrackisabletoreach50.0%.
陳思.部分預應力混凝土疊合板底板力學性能試驗研究[J]混凝土與水泥制品,2020(6):53-56.
CHEN S.Experimental Research on Mechanical Performance of Partially Prestressed Concrete Composite Slabs[J].China Concrete and Cement Products,2020(6):53-56.