基础隔震层钢螺旋弹簧软碰撞限位试验研究-世界地震工程.PDF

23 4 Vol. 23, No. 4 2007 12 W ORLD EARTHQUAKE ENGINEERING Dec. , 2007 : 1007- 6069( 2007) 04- 0039-05 韩 淼 李仙华 杜红凯 ( , 100044) : 3, 9, , : ; ; ; : P315 : A E xperim en t on lim iting disp lacem en t of steel sp iral spring soft-collision for a base isolating layer HAN-m iao LIX ian-hua DU Hong-kai ( Schoo l ofC ivil Engineering and T raffic Eng ineering, Beijing University of CivilEng ineering and A rchitecture, Beijing 100044, China ) Abs tract: The expermi entalmodel of lmi iting d isplacement of base isolation soft-collision and three k inds of steel spiral spring buffers are designed and made. The testing mechanical characteristics of a buffer are given. N ine kinds ofmodel tests on a shak ing table have been performed. The expermi ent data are analyzed, and the influence of soft-collision buffer. s parameters on structural response is clarified. A t last the optmi ized soft-collision test work caseswh ich are suitable for this isolated expermi entalmodel are obtained. K ey w ord s: base isolation; soft-collision; steel sp iral spring buffers; model test 1 , , , , , , , , , , , , , , [ 1]/ 0, , , , , , , / 0 : 2007- 03- 21; : 2007- 0 - 19 : (KM200510016005), , : ( 1969- ), , , . 40 23 , : ( 1) ; ( 2) ; ( 3) , / 0, 2 2. 1 1100@ 1200mm, 1, 0. 5m 1 m 1 = 1190kg, m 2 = 953kgK 2 = 67. 56N /mm, 0. 2K 2 N = 0. 02, 500/ 300= 1. 67mm 2 0. 065s 2. 2 , , 40mm, 105 mm, 50mm k 1 = 157. 9N /mm, , K 1 = 631165N /mm 0. 366s 1