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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,
,
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: 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
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: 2007- 03- 21; : 2007- 0 - 19
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40 23
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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
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