合肥工业大学学报（自然科学版）
閤肥工業大學學報（自然科學版）
합비공업대학학보（자연과학판）
JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE)
2015年
4期
508-512
,共5页
预压装配式框架%低周反复荷载%静力弹塑性分析%破坏机制%抗震性能
預壓裝配式框架%低週反複荷載%靜力彈塑性分析%破壞機製%抗震性能
예압장배식광가%저주반복하재%정력탄소성분석%파배궤제%항진성능
post-tensioned precast frame%low-cycle loading%nonlinear static analysis%failure mecha-nism%seismic performance
为了进一步了解预压装配式框架的地震反应特征，在1榀单跨3层预压装配式混凝土框架在低周反复荷载作用下的试验基础上，文章采用S A P2000程序对其进行静力弹塑性分析，了解预压装配式混凝土框架的受力性能、变形能力和框架的破坏机制。试验研究表明：在水平和竖向荷载共同作用下，框架梁端负弯矩叠加区首先出现塑性铰，加载后期梁端塑性铰发生充分转动；框架层间极限位移角为1／42～1／67时，承载能力没有出现明显下降。理论分析表明：预压装配式预应力混凝土框架在基本烈度地震作用下，仍能保持弹性状态；罕遇地震下框架最大层间位移角出现在1层，为1／43，与试验值较为接近，小于规范规定的限值1／50。预压装配式混凝土框架具有较好的抗震性能。
為瞭進一步瞭解預壓裝配式框架的地震反應特徵，在1榀單跨3層預壓裝配式混凝土框架在低週反複荷載作用下的試驗基礎上，文章採用S A P2000程序對其進行靜力彈塑性分析，瞭解預壓裝配式混凝土框架的受力性能、變形能力和框架的破壞機製。試驗研究錶明：在水平和豎嚮荷載共同作用下，框架樑耑負彎矩疊加區首先齣現塑性鉸，加載後期樑耑塑性鉸髮生充分轉動；框架層間極限位移角為1／42～1／67時，承載能力沒有齣現明顯下降。理論分析錶明：預壓裝配式預應力混凝土框架在基本烈度地震作用下，仍能保持彈性狀態；罕遇地震下框架最大層間位移角齣現在1層，為1／43，與試驗值較為接近，小于規範規定的限值1／50。預壓裝配式混凝土框架具有較好的抗震性能。
위료진일보료해예압장배식광가적지진반응특정，재1품단과3층예압장배식혼응토광가재저주반복하재작용하적시험기출상，문장채용S A P2000정서대기진행정력탄소성분석，료해예압장배식혼응토광가적수력성능、변형능력화광가적파배궤제。시험연구표명：재수평화수향하재공동작용하，광가량단부만구첩가구수선출현소성교，가재후기량단소성교발생충분전동；광가층간겁한위이각위1／42～1／67시，승재능력몰유출현명현하강。이론분석표명：예압장배식예응력혼응토광가재기본열도지진작용하，잉능보지탄성상태；한우지진하광가최대층간위이각출현재1층，위1／43，여시험치교위접근，소우규범규정적한치1／50。예압장배식혼응토광가구유교호적항진성능。
Based on the low‐cycle loading experiment of a specimen of three‐story prestressed fabricated con‐crete frame ,the load‐bearing capacity ,the deformation performance and the failure mechanism of the frame are investigated by using SAP2000 to make nonlinear static analysis .The experimental results show that the plastic hinge first appears at the negative moment superposed zone of the frame beam ends under both horizon ‐tal load and vertical load ,during the late period of loading the plastic hinge of beam ends can rotate sufficient‐ly and when the ultimate story drifts angle is between 1/42~1/67 ,the carrying capacity of the frame does not degrade obviously .The theoretical analysis indicates that the prestressed fabricated concrete frame can still keep elastic when suffered from earthquake with basic intensity ,and when suffered from rare earthquake ,the largest story drift angle appears at the first story reaching 1/43 ,which is close to the experimental value and is smaller than the limit value in the code .All these show that the prestressed prefabricated concrete frame has excellent seismic performance .
