正交通过滑坡体的桥梁墩基地震动力响应振动台试验研究

doi:10.13722/j.cnki.jrme.2021.0175

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摘要桥梁建设中时常会遇到地震、滑坡等地质灾害问题，鉴于此，本文进行1∶100相似比振动台试验模拟桥梁结构正交通过滑坡地区桥墩结构的动力响应特征。在满足相似规律前提下，输入不同加速度幅值的地震波作为基底激励，监测桥墩处加速度、应变和土压力3项动力响应参数。通过对桥墩处的加速度、应变和土压力的动力响应分析，得到如下结论：(1) 桥墩处测点应变峰值表现为坡面途径处测点应变峰值最小，并且同一桥墩不同位置在地震波作用下，受到地震波影响大小各不相同，表现为上端振动响应更加剧烈。(2) 桥墩处加速度和土压力峰值的大小与加载地震波强度呈正相关。(3) 前后桥墩处加速度和应变峰值相关系数都大于0.8，相关性极强，证明在模型试验中桥墩间距的选择符合桥梁设计要求，可以为桥梁工程建设提供参考。(4) 桥墩处应变换算得到桥墩在地震波作用下，会有一定的蠕动变形，表现为桥墩顶端变形最大，底端变形最小，在实际工程中，应结合这一特点选择抗震材料的使用。(5) 滑带材料滤波作用相比滑体和基岩材料较强，表现为位于滑带中的测点振动响应较弱。

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关键词 ：边坡工程, 振动台试验, 滑坡, 地震, 桥墩结构, 相关性, 动力响应。

Abstract：Geological hazards such as earthquakes and landslides are often encountered in bridge construction. Therefore，a 1∶100 similar ratio shaking table test is carried out to simulate the dynamic response characteristics of pier structure in the area where the bridge structure is passing through the landslide. Under the premise of satisfying the similar law，the seismic waves with different acceleration amplitudes are input as the basement excitation.Additionally，the three dynamic response parameters of acceleration, strain and earth pressure at the bridge piers are monitored. By analyzing the dynamic response of acceleration，strain and earth pressure at the bridge pier，the following conclusions are obtained：(1) The peak strain at the measuring point at the pier shows that the peak strain at the measuring point on the slope path is the smallest. Furthermore，different locations of the same pier are affected by seismic waves，which shows that the vibration response of the upper end is more intense，showing that the vibration response of the upper end is more intense. (2) The magnitudes of acceleration and peak earth pressure at the bridge piers are positively correlated with the intensity of the loaded seismic waves. (3) The correlation coefficients of acceleration and strain peaks at both the front and rear piers are greater than 0.8，with very strong correlation. This indicates that the selection of pier spacing in the model test meets the bridge design requirements and can provide a reference for bridge engineering construction. (4) According to the strain conversion at the pier，the pier will have a certain creep deformation under the action of seismic wave. The top deformation of the pier is the largest and the bottom deformation is the smallest. In practical engineering，the use of seismic materials should be selected in combination with this feature. (5) The filtering effect of the sliding zone material is stronger than that of the sliding body and bedrock material，which is reflected by the weaker vibration response of the measurement points located in the slip zone.

Key words： slope engineering shaking table test landslide earthquake bridge pier structure correlation dynamic response

引用本文:

吴红刚1，2，任建凯1，2，张永谋2，雷浩1，2. 正交通过滑坡体的桥梁墩基地震动力响应振动台试验研究[J]. 岩石力学与工程学报, 2021, 40(S2): 3443-3454.
WU Honggang1，REN Jiankai1，2，ZHANG Yongmou2，LEI Hao1，2. Shaking table test study on seismic dynamic response of bridge pier foundation passing through landslide body orthogonally#br#. , 2021, 40(S2): 3443-3454.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2021.0175 或 https://rockmech.whrsm.ac.cn/CN/Y2021/V40/IS2/3443

[1]	张俊. 三峡库区万州区滑坡灾害风险评估研究[硕士学位论文][D]. 中国地质大学，2016.(ZHANG Jun. Landslide Risk Assessment Wanzhou Country, Three Gorges Reservoir [M. S. Thesis][D]. China University of Geology，2016.(in Chinese))
[2]	陈颖骐. 斜坡区桥梁地基灾变风险评估与控制[硕士学位论文][D]. 重庆：重庆交通大学，2015.(CHEN Yingqi. Assessment and control of catastrophe risk of bridge foundation in slope area[M. S. Thesis][D]. Chongqing：Chongqing Jiaotong University，2015.(in Chinese))
[3]	张开. 滑坡国内外研究概况的综述[J]. 科技创新导报，2012，(4)：102-103.(ZHANG Kai. Summary of the research situation of landslides at home and abroad[J]. Science and Technology Innovation Herald，2012，(4)：102-103.(in Chinese))
[4]	晏长根，李为，赵珍祥，等. 郑家湾滑坡体蠕变对上跨桥梁的影响分析[J]. 工程地质学报，2017，25(2)：416-423.(YAN Changgen，LI Wei，ZHAO Zhenxiang，et al. Analysis of the influence of Zhengjiawan landslide body creep on the upper span bridge[J]. Journal of Engineering Geology，2017，25(2)：416-423.(in Chinese))
[5]	蒋正宣. 川藏铁路康定—昌都段滑坡堰塞湖减灾对策及桥梁施工新技术研究[硕士学位论文][D]. 成都：西南交通大学，2017.(JIANG Zhengxuan. Research on disaster mitigation countermeasures and new bridge construction technology of landslide dammed lake in Kangding—Changdu section of Sichuan—Tibet Railway[M. S. Thesis][D]. Chengdu：Southwest Jiaotong University，2017.(in Chinese))
[6]	唐洪祥，康建辉，旃鹏. 桥梁路段的古滑坡稳定性分析及设计处治措施[J]. 公路交通科技：应用技术版，2018，14(3)：131-133.(TANG Hongxiang，KANG Jianhui，ZHAN Peng. Stability analysis of ancient landslides in bridge sections and design treatment measures[J]. Highway and Transportation Science and Technology：Applied Technology，2018，14(3)：131-133.(in Chinese))
[7]	刘闯，冯忠居，张福强，等. 地震作用下特大型桥梁嵌岩桩基础动力响应[J]. 交通运输工程学报，2018，18(4)：53-62.(LIU Chuang，FENG Zhongju，ZHANG Fuqiang，et al. Dynamic response of rock-socketed pile foundation of super large bridge under earthquake[J]. Journal of Traffic and Transportation Engineering，2018，18(4)：53-62.(in Chinese))
[8]	张建操. 基于振动台试验的少筋混凝土重力式桥墩抗震性能研究[硕士学位论文][D]. 兰州：兰州交通大学，2020.(ZHANG Jiancao. Research on seismic performance of less-reinforced concrete gravity bridge piers based on shaking table test[M. S. Thesis][D]. Lanzhou：Lanzhou Jiaotong University，2020.(in Chinese))
[9]	MEDEL-VERA C，JI T J A. stochastic ground motion accelerogram model for Northwest Europe[J]. Soil Dynamics and Earthquake Engineering，2016，82：170-195.
[10]	RONG M S，WANG Z M，WOOLERY E W，et al. Nonlinear site response from the strong ground-motion recordings in western China[J]. Soil Dynamics and Earthquake Engineering，2016，82：99-110.
[11]	ZHANG Z L，WANG T，WU S R，et al. Investigation of dormant landslides in earthquake conditions using a physical model[J]. Landslides，2017，14(3)：1 181-1 193.
[12]	WANG K L，LIN M L. Initiation and displacement of landslide induced by earthquake-a study of shaking table model slope test[J]. Engineering Geology，2011，122(1/2)：106-114.
[13]	YUAN L J，LIU X S，WANG X G，et al. Seismic performance of earth-core and concrete-faced rock-fill dams by large-scale shaking table tests[J]. Soil Dynamics and Earthquake Engineering，2014，56：1-12.
[14]	SHI Z M，WANG Y Q，PENG M，et al. Characteristics of the landslide dams induced by the 2008 Wenchuan earthquake and dynamic behavior analysis using large-scale shaking table tests[J]. Engineering Geology，2015，194：25-37.
[15]	SUN H，NIU F J，ZHANG K J，et al. Seismic behaviors of soil slope in permafrost regions using a large-scale shaking table[J]. Landslides，2017，14(4)：1 513-1 520.
[16]	叶爱君，袁万城，胡世德. 高墩振动台试验研究[J]. 同济大学学报：自然科学版，1996，(6)：606-612.(YE Aijun，YUAN Wancheng，HU Shide. Experimental research on high pier shaking table[J].Journal of Tongji University：Natural Science，1996，(6)：606-612.(in Chinese))
[17]	韦晓，范立础，王君杰. 考虑桩-土-桥梁结构相互作用振动台试验研究[J]. 土木工程学报，2002，(4)：91-97.(WEI Xiao，FAN Lichu，WANG Junjie. Shaking table test considering the interaction of pile-soil-bridge structure[J]. China Civil Engineering Journal，2002，(4)：91-97.(in Chinese))
[18]	王欢. 配筋率对高速铁路圆端形实心桥墩地震响应影响研究[硕士学位论文][D]. 长沙：中南大学，2014.(WANG Huan. Research on the influence of reinforcement ratio on seismic response of round-end solid piers of high-speed railway[M. S. Thesis][D]. Changsha：Central South University，2014.(in Chinese))
[19]	申彦利，谷少康. 钢筋混凝土空心矩形桥墩振动台试验[J]. 建筑科学与工程学报，2018，35(5)：128-133.(SHEN Yanli，GU Shaokang. Shaking table test of reinforced concrete hollow rectangular pier[J]. Chinese Journal of Building Science and Engineering，2018，35(5)：128-133.(in Chinese))
[20]	艾庆华，李宏男，王东升，等. 基于位移设计的钢筋混凝土桥墩抗震性能试验研究(II)：振动台试验[J]. 地震工程与工程振动，2008，(3)：39-46.(AI Qinghua，LI Hongnan，WANG Dongsheng，et al. Experimental study on seismic performance of reinforced concrete bridge piers based on displacement design(II)：shaking table test[J]. Earthquake Engineering and Engineering Vibration，2008，(3)：39-46.(in Chinese))
[21]	REN J K，ZHANG Y M，WU H G，et al. Dynamic response analysis of acceleration of bridge crossing landslide under earthquake[J]. Arabian Journal of Geosciences，2021，14：1903.
[22]	中华人民共和国行业标准编写组. TB10621—2014高速铁路设计规范[S]. 北京：中国铁道出版，2015.(The Professional Standards Compilation Group of People?s Republic of China. TB10621—2014 High-speed railway design code[S]. Beijing：China Railway Press，2015.(in Chinese))
[23]	陈志敏，冯亚松，刘德学. 软岩隧道IV～VI级围岩相似材料正交试验研究[J]. 兰州交通大学学报，2015，34(1)：12-16.(CHEN Zhimin，FENG Yasong，LIU Dexue. Research on orthogonal test of similar materials of surrounding rock of grade IV～VI in soft rock tunnel[J]. Journal of Lanzhou Jiaotong University，2015，34(1)：12-16.(in Chinese))
[24]	梁庆国，樊纯坛，赵志强. 大断面铁路隧道室内模型试验与分析研究[J]. 铁道科学与工程学报，2017，14(9)：1 915-1 924.(LIANG Qingguo，FAN Chuntan，ZHAO Zhiqiang. Analysis and research on laboratory model test for large section railway tunnel[J]. Journal of Railway Science and Engineering，2017，14(9)：1 915-1 924.(in Chinese))
[25]	BAKER J W，CORNELL C A. Correlation of response spectral values for multi component ground motions[J]. Bulletin of the Seismological Society of America，2006，96(1)：215-227.