工业安全与环保
工業安全與環保
공업안전여배보
INDUSTRIAL SAFETY AND ENVIRONMENTAL PROTECTION
2015年
8期
1-3
,共3页
朱超祁%王琦%李为腾%邵行%王新
硃超祁%王琦%李為騰%邵行%王新
주초기%왕기%리위등%소행%왕신
拱架%U型约束混凝土%深部软岩巷道%有限元分析
拱架%U型約束混凝土%深部軟巖巷道%有限元分析
공가%U형약속혼응토%심부연암항도%유한원분석
arch centering%U-type confined concrete%deep soft rock roadway%finite element analysis
为研究封板厚度与混凝土强度对矿用U型约束砼拱架的影响规律,设计了U型约束砼短柱轴压模拟方案。从短柱破坏形态、应力应变曲线、极限承载力等方面进行对比分析,结果表明,封板厚度、混凝土强度均对试件应力应变曲线基本特征、弹性模量无明显影响,但提高混凝土强度、增加封板厚度可以提高试件弹性极限值与极限承载力。
為研究封闆厚度與混凝土彊度對礦用U型約束砼拱架的影響規律,設計瞭U型約束砼短柱軸壓模擬方案。從短柱破壞形態、應力應變麯線、極限承載力等方麵進行對比分析,結果錶明,封闆厚度、混凝土彊度均對試件應力應變麯線基本特徵、彈性模量無明顯影響,但提高混凝土彊度、增加封闆厚度可以提高試件彈性極限值與極限承載力。
위연구봉판후도여혼응토강도대광용U형약속동공가적영향규률,설계료U형약속동단주축압모의방안。종단주파배형태、응력응변곡선、겁한승재력등방면진행대비분석,결과표명,봉판후도、혼응토강도균대시건응력응변곡선기본특정、탄성모량무명현영향,단제고혼응토강도、증가봉판후도가이제고시건탄성겁한치여겁한승재력。
In order to study the influence of sealing plate and concrete on the latest invented U -type confined concrete arch centering ,a series of axial compression numeric simulation scheme of U-type confined concrete short columns is de-signed ,by which the failure mode ,stress-strain curve ,ultimate bearing capacity are researched .The study result shows that the thickness of sealing plate and strength of concrete have no influence on basic characteristics of stress-strain curve and modulus of elasticity ,but increasing the strength of concrete and the thickness of sealing plate can improve the elastic limit and ultimate bearing capacity .