文档介绍：
桩板式抗滑挡墙地震响应的振动台试验
研究#
摘要:汶川地震路基震害调查表明,在顺层或堆积体边坡中的桩板式抗滑挡墙具有良好的抗
震表现。为了更好地了解该结构的抗震性能和优化抗震设计方法,本论文以大型振动台模型
试验为手段对其进行研究。振动台试验台面尺寸 6m×6m,模型缩尺比例 1∶10,模型箱尺
寸 m× m× m(长×宽×高),模型桩高 100cm,截面尺寸 12cm×9cm,嵌固深度 40cm,
模型边坡用配制土模拟,分层夯实填筑。为明确地震作用下桩板式抗滑挡墙的地震响应特性,
试验采用缩尺的卧龙台站实测地震波对模型激励。试验中,实测了桩背的土压力、桩身位移
和边坡岩土体加速度,研究了地震动参数对结构动力响应的影响,建议了桩板式抗滑挡墙设
计时地震综合影响系数的合理取值。试验结果有助于揭示该结构抗震机理,为其抗震设计提
供了可靠依据。
关键词:桩板式抗滑挡土墙;振动台试验;动力响应;抗震设计
中图分类号:TU 435
Reserch on seismic responses of anti-sliding sheet pile wall
from shaking table test
Abstract: From the investigation of seismic hazards of subgrade in Wenchuan earthquake, the
anti-sliding sheet pile wall has been proven to be an excellent aseismic structure in bedding for
deposit slopes. To understand the aseismic performance better and optimize aseismic design of the
structure, large shaking table test, therefore, was performed The shaking table is 6m by 6m, and
the similitude ratio of test model is 1:10. The internal size of the model box was ××,
and model piles with cross section of 12cm×9cm were 100cm high, and the embedded depth was
40 cm. The modelled slope was made of preparation materials, and filled pacted by using
layer by layer. To ascertain seismic response characteristics of the anti-sliding sheet pile wall,
acceleration histories recorded at the Wolong station in the Wenchuan earthquake were scaled and
used to excite the model. In the test, seismic earth pressures on the wall back, displacement of pile,
and accelerations in slope were measured, and the influences of ground motion parameters to
dynamic responses of structure were studied. In addition, reasonable values of seismic coefficient
are proposed for the structure. The results are helpful to reveal the aseismic mechanism and
provide reliable basis for aseismic design of anti-sliding sheet pile wall.
Keywords: anti-sliding sheet pile wall; shaking table test; seismic response; aseismic design
0 引言
[1]
[2]
需要说明的是,虽然同为桩板墙,应用