吉大《钢结构》在线作业二（Kyrgyzstan steel structure online homework two）.docVIP

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吉大《钢结构》在线作业二（Kyrgyzstan steel structure online homework two）.doc

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吉大《钢结构》在线作业二（Kyrgyzstan steel structure online homework two）

吉大《钢结构》在线作业二（Kyrgyzstan steel structure online homework two） Kyrgyzstan steel structure online homework two Total score: 100 test time: - test scores: 100 First, radio questions (10 questions, 40 points) Score: 40 1. the calculation of the tension member of the solid belly type has (). A. strength B. strength and overall stability C. intensity, local stability and overall stability D. strength and stiffness (slenderness ratio) The correct answer: D Full Score: 4 points: 4 2. the height of the roof truss is generally span. A. 1/7~1/8 B. 1/7~1/9 C. 1/6~1/8 D. 1/6~1/9 The correct answer: C Full Score: 4 points: 4 3. when the beam with fixed concentrated loads, the action points (should). A. set longitudinal stiffeners B. setting transverse stiffener C. reduces web width D. increases the flange thickness The correct answer: B Full Score: 4 points: 4 4., the main factors that affect the fatigue strength of steel do not include (). A. tectonic condition B. stress amplitude The number of repetitions of C. cyclic loading Static strength of D. steel The correct answer: D Full Score: 4 points: 4 5. purlin roof structure system defect is (). A. has poor integrity The B. roof is self important C. has poor seismic performance D. tectonic complex The correct answer: B Full Score: 4 points: 4 6. the important index to determine the design value of steel strength is (). A. yield point B. elastic limit C. proportional limit D. tensile strength The correct answer: A Full Score: 4 points: 4 7. the steel structure at low temperature selects steel in addition to strength, plasticity and cold bending performance index, but also needs () index. A. low temperature yield strength B. low temperature tensile strength C. low temperature impact toughness D. fatigue strength The correct answer: C Full Score: 4 points: 4 8. when the overall stability coefficient of the beam is b 0.6, the value of phi B instead of phi B is mainly due to (...). The local stability of the A. beam is affected The B.