外包H型钢混凝土轴压短柱受力性能的研究.pdfVIP

外包H型钢混凝土轴压短柱受力性能研究 王晨霞 李斌 (内蒙古科技大学建筑与土木工程学院。内蒙古包头，014010) 摘要：通过9个外包H型钢混凝土组合短柱轴心受压性能的试验，对外包H型钢混凝七组合短柱的破j；!：模式和影响 其极限承载力的因素进行了研究。试验设计分别考虑了含钢率、钢系杆间距对构件性能的影响。试件截面尺寸为 凝土被压碎。横向系杆的设置加强了对混凝土的约束，系杆间距越小越能提高柱子的延性，但是在达到极限荷载 之前，系杆应力并未达到屈服。 关键词：H型钢；部分包裹组合柱；极限承载力 on theBehaviorof EncasedCom Columns Study Partially posite ectedtoAxial Subj Loads WrANGChen-xiaLlBin (SchoolofArchitectureandCivil Engineering,Inner MongoliaUniversityofScienceTechnology,Baotou014010，China) Abstract：Aseriesofstub-columnstests on encased stubcolumnsmade performedpartially composite withwelded H—sectionsteelwereconductedto failure andevaluate effectsonultimateload study pattern parameters capacity of test consistedof9stub columns．Theseries columns，theH．sectionsteeliSstifienedwithtransverselinkand the ofthesteel concreteis between section．Theofthecolumnswere0．8m．with poured flanges lengths x crosssectionsas200200mm．Theslenderness 4．Theinfluenceofsteel rectangular ratio(L／h)Was ratios．space oftransverseoncolumnbehaviorwasstudied．Theresults columnsWas link indicatethatfailureofall duetolocal ofthe withconcrete link the ofthe bucklingflangesalong crushing．Smallerspacingimprovesductilitycolumns； measurementsshowthatin didnotoccurbeforethe loadinthelinks． however,the generalyielding peak H-section