桩板式挡土墙损伤预警研究

doi:10.16265/j.cnki.issn1003-3033.2017.11.029

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (11): 169-174.doi: 10.16265/j.cnki.issn1003-3033.2017.11.029

• 公共安全 • 上一篇

桩板式挡土墙损伤预警研究

徐乾¹ 讲师, 杨超²

1 陕西理工大学土木工程与建筑学院,陕西汉中 723001
2 三峡库区地质灾害教育部重点实验室三峡大学,湖北宜昌 443002

收稿日期:2017-08-05 修回日期:2017-10-10 发布日期:2020-10-21
作者简介:徐乾 (1986—),男,陕西汉中人,博士,讲师,主要从事土木工程结构健康诊断与安全预警方面的研究。E-mail:xuqian20121601014@163.com。
基金资助:
国家自然科学基金青年基金资助(41602301);陕西省教育厅专项科学研究计划项目(17JK0157);陕西理工大学人才启动项目(SLGQD2017-4)。

Study on damage alarming for a pile plate retailing wall

XU Qian¹, YANG Chao²

1 School of Civil Engineering and Architecture, Shaanxi University of Technology, Hanzhong Shaanxi 723001, China
2 Key Laboratory of Geological Hazard on Three Gorges Reservoir Area, Ministry of Education China Three Gorges University, Yichang Hubei 443002, China

Received:2017-08-05 Revised:2017-10-10 Published:2020-10-21

摘要/Abstract

摘要： 为预防挡土墙坍塌事故,首先基于小波包频带能量谱理论,对激励作用下挡土墙结构响应间虚拟脉冲响应函数进行小波包频带能量谱分析;然后创建损伤特征向量谱,确定损伤预警指标,开发一种用于挡土墙结构的三级损伤预警方法;最后对某桩板式挡土墙进行振动测试,验证该损伤预警方法的可行性和有效性。结果表明:基于损伤特征向量谱可预警挡土墙损伤状态;通过损伤预警指标走势图可预警挡土墙损伤位置;通过损伤程度与预警指标间的定量关系可预警挡土墙损伤程度。

关键词: 挡土墙, 虚拟脉冲响应函数, 损伤特征向量谱, 损伤预警指标, 三级损伤预警方法

Abstract: To prevent collapse of retaining walls, a wavelet packet frequency band energy spectrum analysis was performed for the virtual impulse response function of a retaining wall under the effects of excitation based on the wavelet packet frequency band energy spectrum theory. A damage feature vector spectrum and a damage alarming index were created. On the basis of both the spectrum and the index, a three-level damage alarming method was worked out for retailing wall structures. To verify the feasibility and effectiveness of this alarming method, vibration tests on a pile plate retaining wall were performed. Results show that damage state of the retaining wall can be alarmed via the damage feature vector spectrum, partial damage location of the wall can be alarmed via the alarming index trend surface, and damage intensity of the wall can also be alarmed via the quantitative relationship between the damage intensity and the alarming index.

Key words: retailing walls, virtual impulse response function, damage feature vector spectrum, damage alarming index, three-level damage alarming method

中图分类号:

X928.03

徐乾讲师, 杨超. 桩板式挡土墙损伤预警研究[J]. 中国安全科学学报, 2017, 27(11): 169-174.

XU Qian, YANG Chao. Study on damage alarming for a pile plate retailing wall[J]. China Safety Science Journal, 2017, 27(11): 169-174.

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桩板式挡土墙损伤预警研究

Study on damage alarming for a pile plate retailing wall

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