振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2014年
5期
46-52,81
,共8页
王博%白国良%刘林%代慧娟
王博%白國良%劉林%代慧娟
왕박%백국량%류림%대혜연
型钢混凝土框排架混合结构%弹塑性地震反应%变形性能%损伤演化%薄弱部位%抗震防线
型鋼混凝土框排架混閤結構%彈塑性地震反應%變形性能%損傷縯化%薄弱部位%抗震防線
형강혼응토광배가혼합결구%탄소성지진반응%변형성능%손상연화%박약부위%항진방선
SRC frame-bent hybrid structure%elastic-plastic seismic response%deformation performance%damage evolution%weak parts%anti-seismic lines
型钢混凝土框排架混合结构是一种新型的火电厂主厂房结构体系，合理的剪力墙布置能够使该类结构实现三道抗震防线。采用ABAQUS有限元软件进行8度小震、中震、大震以及9度大震下的弹塑性地震反应分析，获得结构在不同强度地震下的基底剪力、整体侧移、层间侧移角以及结构构件的损伤演化特性。研究结果表明：强震作用下剪力墙首先出现损伤破坏，可以起到第一道抗震防线的作用，有效提高了结构的抗震能力；随着地震作用的增强，结构薄弱部位由煤斗层到运转层再到底部两层下移，且整体侧移曲线由弯剪型向剪切型转变；整体结构的变形性能较好，能够满足“大震不倒”的抗震设防需求。最后，通过计算分析提出适用于不同烈度、不同场地类别下的剪力墙布置数量与抗震构造措施，可供工程设计参考。
型鋼混凝土框排架混閤結構是一種新型的火電廠主廠房結構體繫，閤理的剪力牆佈置能夠使該類結構實現三道抗震防線。採用ABAQUS有限元軟件進行8度小震、中震、大震以及9度大震下的彈塑性地震反應分析，穫得結構在不同彊度地震下的基底剪力、整體側移、層間側移角以及結構構件的損傷縯化特性。研究結果錶明：彊震作用下剪力牆首先齣現損傷破壞，可以起到第一道抗震防線的作用，有效提高瞭結構的抗震能力；隨著地震作用的增彊，結構薄弱部位由煤鬥層到運轉層再到底部兩層下移，且整體側移麯線由彎剪型嚮剪切型轉變；整體結構的變形性能較好，能夠滿足“大震不倒”的抗震設防需求。最後，通過計算分析提齣適用于不同烈度、不同場地類彆下的剪力牆佈置數量與抗震構造措施，可供工程設計參攷。
형강혼응토광배가혼합결구시일충신형적화전엄주엄방결구체계，합리적전력장포치능구사해류결구실현삼도항진방선。채용ABAQUS유한원연건진행8도소진、중진、대진이급9도대진하적탄소성지진반응분석，획득결구재불동강도지진하적기저전력、정체측이、층간측이각이급결구구건적손상연화특성。연구결과표명：강진작용하전력장수선출현손상파배，가이기도제일도항진방선적작용，유효제고료결구적항진능력；수착지진작용적증강，결구박약부위유매두층도운전층재도저부량층하이，차정체측이곡선유만전형향전절형전변；정체결구적변형성능교호，능구만족“대진불도”적항진설방수구。최후，통과계산분석제출괄용우불동열도、불동장지유별하적전력장포치수량여항진구조조시，가공공정설계삼고。
SRC (shapes reinforced concrete)frame-bent hybrid structure is a new type of main building system for thermal power plants,and a reasonable arrangement of shear walls can make the structure have three anti-seismic lines. ABAQUS finite element software was used to analyze the elastic-plastic seismic response of the structure under 8 degree minor earthquake,moderate earthquake and major earthquake as well as 9 degree major earthquake,to acquire the base shear,lateral displacement,inter-story drift and damage evolutionary character of the structure under different earthquake intensities.The results showed that the shear wall is damaged firstly under strong earthquake,it forms the first anti-seismic line,and this can enhance the earthquake resistance of the structure effectively;as the earthquake intensity increases,the weak part of the structure moves down from coal hopper floor to operation floor and to bottom two stories, and the lateral displacement curve is shifting from shear-moment-type toward shear-type;the deformation performance of the whole structure is well,it can make the structure meet the requirement of no collapse under severe earthquake. Finally,the reasonable arrangement and seismic tectonic measure of shear walls under different earthquake intensities and different site categories were suggested through numerical analysis,they could be referencial to engineering designs.
