含大石块泥石流冲击作用下框架结构房屋动力响应研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (1) : 9-19.

论文

刘欢1,2,3，樊晓一2,4，姜元俊5，刘浩南2，韩培锋6，田述军6，刘俊新6

作者信息 +

Dynamic response of frame structure building under impact of debris flow with large stones

LIU Huan1,2,3, FAN Xiaoyi2,4, JIANG Yuanjun5, LIU Haonan2, HAN Peifeng6, TIAN Shujun6, LIU Junxin6

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文章历史 +

摘要

基于SPH-FEM耦合的数值方法，分别从结构破坏形态、冲击力时程、关键点位移和速度、系统能量等方面，研究含大石块泥石流冲击作用下框架结构房屋的动力响应和破坏机理。计算结果表明：SPH-FEM耦合数值方法能够较好地模拟泥石流冲击爬高、绕流扩散、淤积稳定过程。考虑了三种泥石流强度等级，在低、中强度冲击情况下，框架房屋填充墙受到破坏，房屋结构整体保持稳定；在高强度冲击情况下，可以观察到框架房屋的逐步倒塌过程，框架柱损坏模式体现了剪切破坏或塑性铰链失效机制。对于房屋结构而言，泥石流的冲击破坏能力主要来自于龙头的冲击力，龙身冲击力相对于龙头降幅约34.2%，大石块的集中作用是结构柱体局部破坏的主要原因。系统能量主要通过泥石流动能转化为结构内能（17.8%）和摩擦耗能（82.8%）。

Abstract

Based on the SPH-FEM coupled numerical method, this paper studies the dynamic response and failure mechanism of frame structure buildings under the impact of large rock debris flow from the aspects of structural failure form, impact time history, displacement and velocity of key points, and system energy. The calculation results show that the SPH-FEM coupled numerical method can well simulate the impact climbing, diffusion around flow and stable sedimentation of debris flow. Three intensity levels of debris flow are considered. In the case of low and medium intensity impact, the filling wall of the frame house is damaged and the whole structure of the house remains stable. In the case of high intensity impact, the gradual collapse of the frame building can be observed, and the failure mode of the frame column reflects the shear failure or plastic hinge failure mechanism. For the building structure, the impact damage ability of debris flow mainly comes from the impact force of the dragon head. The impact force of the dragon body decreases about 34.2% relative to the dragon head. The concentrated effect of large stones is the main reason for the local damage of the structure column. The energy of the system is mainly converted into internal energy (17.8%) and friction energy (82.8%) through kinetic energy of debris flow.

导出引用

刘欢1,2,3，樊晓一2,4，姜元俊5，刘浩南2，韩培锋6，田述军6，刘俊新6. 含大石块泥石流冲击作用下框架结构房屋动力响应研究[J]. 振动与冲击, 2024, 43(1): 9-19

LIU Huan1,2,3, FAN Xiaoyi2,4, JIANG Yuanjun5, LIU Haonan2, HAN Peifeng6, TIAN Shujun6, LIU Junxin6. Dynamic response of frame structure building under impact of debris flow with large stones[J]. Journal of Vibration and Shock, 2024, 43(1): 9-19

参考文献

[1] Li, P Z, Rong K J, Lu Z, et al. Experimental and numerical study on the performance of novel RC frame structure encased with shaped steel under debris flow impact[J]. Engineering Structures, 2020. 212(1): 110472. [2] Cui P, Zeng Ch, Lei Y. Experimental analysis on the impact force of viscous debris flow[J]. Earth Surface Processes and Landforms, 2015, 40(12): 1644-1655. [3] 张宇, 韦方强, 贾松伟, 等. 砖砌体建筑在泥石流冲击力作用下动态响应实验[J]. 山地学报, 2006, 24(3): 340-345. Zhang Yu, Wei Fangqiang, Jia Songwei, et al. Experimental study on dynamic response of brick masonry under impact force of debris flow[J]. Journal of Mountain Science, 2006, 24(3): 340-345. [4] Zhang Y, Wei F Q, Wang Q．Experimental research of reinforced concrete buildings struck by debris plow in mountain areas of western china[J]. Wuhan University Journal of Natural Sciences, 2007, 12(4): 645-650. [5] 曾超, 崔鹏, 葛永刚, 等. 四川汶川七盘沟“7•11”泥石流破坏建筑物的特征与力学模型[J]. 地球科学与环境学报, 2014, 36(2): 81-91. Zeng Chao, Cui Peng, Ge Yonggang, et al. Characteristics and mechanical of buildings damaged by debris flows on 11 July, 2013 in Qibanggou of Wenchuan, Sichuan[J]. Journal of Earth Sciences and Environment, 2014, 36(2): 81-91. [6] 雷雨, 崔鹏, 蒋先刚. 泥石流作用下砌体房屋破坏机理和结构优化[J]. 四川大学学报, 2016, 48(4): 61-69. Lei Yu, Cui Peng, Jiang Xiangang. Failure mechanism and structure optimization of masonry building due to debris flow impact[J]. Journal of Sichuan University, 2016, 48(4): 61-69. [7] Soleimankhani H, Carozza S, Aronica G T, et al. Analytic back calculation of debris flow damage incurred to a masonry building: the case of Scaletta Zanclea 2009 event［C］∥E3S Web of Conferences. Lyon: European Conference on Flood Risk Management, 2016, 7: 04007. [8] Lu Z, Rong K J, Zhou Z G, et al. Experimental study on performance of frame structure strengthened with foamed aluminum under debris flow impact[J]. Journal of Performance of Constructed Facilities, 2020, 34(2): 120-132. [9] 程选生, 张爱军, 任毅, 等. 泥石流作用下砌体结构的破坏机理和防倒塌研究[J]. 工程力学, 2015, 32(8): 156-163. Cheng Xuansheng, Zhang Aijun, Ren Yi, et al. Failure mechanism and anti-collapse measures of masonry structure under debris flow[J]. Engineering Mechanics, 2015, 32(8): 156-163. [10] 李培振, 李进, 李唐振昊. 泥石流冲击作用下砌体结构破坏机理研究[J]. 华中科技大学学报, 2017, 45(7): 1-5. Li Peizhen, Li Jin, Li Tangzhenhao. Failure mechanism of masonry structure under debris flow impact[J]. Journal of Huazhong University of Science and Technology, 2017, 45(7): 1-5. [11] Li P Z, Li T Z H, Lu Z, et al. Study on dynamic response of novel masonry structures impacted by debris flow[J]. Sustainability-Basel, 2017, 9(7): 1-22. [12] Luo H Y, Zhang L L, Zhang L M. Progressive failure of buildings under landslide impact[J]. Landslides, 2019, 16(7): 1327-1340. [13] 赵宏亮. 基于SPH方法的粘性泥石流运动过程模拟研究[D]. 中国地质大学, 2018． Zhao Hongliang. Simulation of viscous debris flow process based on SPH method[D]. China University of Geosciences, 2018. [14] Dai Z, Huang Y, Cheng H, et al. SPH model for fluid structure interaction and its application to debris flow impact estimation[J]. Landslides, 2016, 14(3): 1-12． [15] 柳春, 余志祥, 赵世春, 等. 含大石块泥石流冲击作用下混凝土拦挡坝的动力学行为研究[J]. 振动与冲击, 2019, 38(14): 161-168. Liu Chun, Yu Zhixiang, Zhao Shichun, et al. Dynamic behavior of a concrete dam impacted by debris flows with rock[J]. Journal of Vibration and Shock, 2019, 38(14): 161-168. [16] 黄云. 泥石流冲击作用下桥墩的动力响应研究[J]. 中外公路, 2020, 40(2), 143-149. Huang Yun. Study on dynamic response of bridge pier under debris flow impact[J]. Chinese and Foreign Highway, 2020, 40(2): 143-149. [17] 强洪夫. 光滑粒子流体动力学新方法及应用[M]. 科学出版社, 2017. QIANG Hongfu. A new method of smooth particle fluid dynamics and its application[M]. Science Press, 2017. [18] Chen H X , Li J, Feng S J, et al. Simulation of interactions between debris flow and check dams on threedimensional terrain[J]. Engineering Geology, 2019, 251: 48-62. [19] 柳春. 柔性防护结构坡面地质灾害作用的离散化分析理论与方法[D]. 西南交通大学, 2020. Liu Chun. Theory and method of discrete analysis of geological hazard action on slope of flexible protective structure[D]. Southwest Jiaotong University, 2020. [20] 李聪, 邹强, 蒋虎, 等. 泥石流作用下夯土建筑灾变响应特征研究[J]. 防灾减灾工程学报, 2022, 42(1): 42-50. Li Cong, Zou Qiang, Jiang Hu, et al. Disaster response characteristics of rammed earth buildings to debris flow [J]. Journal of Disaster Prevention and Mitigation Engineering, 2022, 42(1) : 42-50. [21] 李培振, 程远超, 高宇, 等. 底层框架柱在黏性泥石流冲击作用下的性能分析[J]. 结构工程师, 2016, 32(3): 15-21． Li Peizhen, Cheng Yuanchao, Gao Yu, et al. Performance analysis of bottom frame column under impact of viscous debris flow [J]. Structural Engineer, 2016,32 (3) : 15-21. [22] Luo H Y, Fan R L, Wang H J, et al. Physics of building vulnerability to debris flows, floods and earth flows[J]. Engineering Geology, 2020, 271(3): 105611. [23] 刘沛允, 岳琦, 张岩, 等. 黏性泥石流作用下砌体结构破坏仿真分析[J]. 建筑结构, 2019, 49(S1): 634-639. Liu Peiyun, Yue Qi, Zhang Yan, et al. Simulation analysis of masonry structure failure under viscous debris flow[J]. Building Structures, 2019, 49 (S1) : 634-639. [24] Feng S J, Gao H Y, Gao L, et al. Numerical modeling of interactions between a flow slide and buildings considering the destruction process[J]. Landslides, 2019, 16(10): 1903-1919. [25] 韩俊辉, 姚昌荣, 余劲松, 等. 基于SPH-FEM耦合方法的泥石流冲击柱形结构物动力响应分析[J]. 四川建筑, 2020, 40(6): 146-152. Han Junhui, Yao Changrong, Yu Jinsong, et al. Dynamic response Analysis of cylindrical structures impacted by debris flow based on SPH-FEM Coupling method[J]. Sichuan Architecture, 20, 40(6): 146-152. [26] Zeng C, Cui P, Su Z M, et al. Failure modes of reinforced concrete columns of buildings under debris flow impact[J]. Landslides. 2014, 12(3): 561-571. [27] 狄生奎, 李健, 张得强. 泥石流冲击作用下框架结构的破坏机理[J]. 山地学报, 2012, 30(2): 201-206. Di Shengkui, Li Jian, Zhang Deqiang. Failure mechanism of frame structure under debris flow impact[J]. Journal of Mountain Science, 2012, 30(2): 201-206.