装配叠合式单舱管廊模型振动台试验研究
引用文献：
杨艳敏 李子根 李永庆 徐冉. 装配叠合式单舱管廊模型振动台试验研究[J]. 建筑结构，2023，48（13）：28-34.
YANG Yanmin LI Zigen LI Yongqing XU Ran. Shaking table test research on assembled composite single-cabin pipe gallery model[J]. Building Structure，2023,48（13）：28-34.
摘要：为研究一种装配叠合式单舱管廊结构的抗震性能，基于模型试验相似理论，设计4个管廊模型进行振动台试验，研究不同腋角高度、配筋率以及场地条件对其结构抗震性能的影响。综合分析管廊结构在单向水平地震激励下加速度、层间位移和钢筋应变等动力响应规律。结果表明，在一定范围内增大腋角高度能降低地震对管廊结构的影响，在地震波峰值加速度为0.8g时，层间位移峰值降低41%～55%;相对于全黏土场地，含有可液化砂土夹层的黏土场地对管廊具有一定的减震作用，在El Centro波激励下，管廊侧墙与上腋角交点位置钢筋应变峰值最小降低19.58%;在一定配筋率范围内，提高配筋率能降低管廊的钢筋应变，增大配筋率后，管廊侧墙与上腋角交点位置的钢筋应变峰值相比小配筋率管廊最大降幅达69.01%,利于结构整体抗震；在不同类型地震波激励下，随着其峰值加速度的增大，管廊的层间位移峰值增长特征不同，在Kobe波激励下层间位移峰值增速最大、El Centro波次之、汶川波最小。
关键词：装配叠合式管廊；振动台试验；场地条件；动力响应；
基金：吉林省科技厅重点研发项目(20200403071SF)；国家应急管理部安全事故防治科技项目(jilin-0001-2018AQ)；吉林省教育厅“十三五”科学技术项目(JJKH20200281KJ)。
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[3] PATIL M,CHOUDHURY D,RANJITH P G,et al.Behavior of shallow tunnel in soft soil under seismic conditions[J].Tunnelling and Underground Space Technology,2018,82(12):30-38.
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[7] 杜盼辉.非均匀场地中综合管廊的地震响应特点[D].哈尔滨：哈尔滨工业大学，2017.
[8] 施有志，柴建峰，林树枝，等.地下综合管廊边界条件对地震动力响应影响数值分析[J].吉林大学学报(地球科学版),2018,48(1):213-225.
[9] 仉文岗，韩亮，陈志雄，等.双仓综合管廊抗震性能模型试验研究[J].岩土工程学报，2020,42(1):100-108.
[10] BATHURST R J,ZARNANI S,GASKIN A.Shaking table testing of geofoam seismic buffers[J].Soil Dynamics and Earthquake Engineering,2007,27(4):324-332.
[11] 江学良，牛家永，杨慧，等.下伏隧道层状岩质边坡地震响应特性的大型振动台试验研究[J].应用力学学报，2018,35(4):762-768,931.
[12] 史晓军，陈隽，李杰.非一致地震激励地下综合管廊振动台模型试验研究(Ⅰ)——试验方法[J].地震工程与工程振动，2010,30(1):147-154.
[13] 马险峰，成博，宋晴雯，等.济南市地铁车站模型振动台试验研究[J].建筑结构，2018,48(S2):198-204.
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Shaking table test research on assembled composite single-cabin pipe gallery model
Abstract: In order to study the seismic performance of an assembled composite single-cabin pipe gallery structure, four pipe gallery models were designed to carry out shaking table tests based on the similarity theory of model tests. The influences of different axillary angle heights, reinforcement ratios and site conditions on the seismic performance of the structure were studied. The dynamic response laws of the pipe gallery structure, such as acceleration, interlayer displacement and reinforcement strain, were comprehensively analyzed under unidirectional horizontal seismic excitation. The results show that increasing the height of axillary angle within a certain range can reduce the influence of earthquake on the pipe gallery structure. When the peak acceleration of seismic wave is 0.8g, the peak value of interlayer displacement decreases by 41%～55%. Compared with the whole clay field, the clay field with the interlayer of liquefied sand has a certain damping effect on the pipe gallery. Under the excitation of El Centro wave, the peak value of reinforcement strain at the intersection of the side wall and the upper axillary angle of the pipe gallery with a minimum reduction of 19.58%. In a certain range of reinforcement ratio, the increase of reinforcement ratio can reduce the steel bars strain of pipe gallery. When the increase of reinforcement ratio, the maximum reduction of the peak value of steel bar strain at the intersection of the side wall and the upper axillary angle of the pipe gallery is 69.01%, which is conducive to the seismic resistance of the whole structure. Under the excitation of different types of seismic waves, with the increase of peak acceleration, the peak growth characteristics of interlayer displacement of the pipe gallery were different, and the peak growth rate of interlayer displacement was the largest under Kobe wave excitation, followed by El Centro wave and Wenchuan wave.
Keywords: assembled composite pipe gallery; shaking table test; site condition; dynamic response
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