改进的标准化累积绝对速度及其在高速铁路地震报警应用中阈值的确定

崔恩文; 郭恩栋; 王倩; 孙逊

doi:10.11899/zzfy20210312

改进的标准化累积绝对速度及其在高速铁路地震报警应用中阈值的确定

doi: 10.11899/zzfy20210312

崔恩文^1,,
郭恩栋^2, ,,
王倩¹,
孙逊²

1.
连云港职业技术学院，江苏连云港 222000
2.
中国地震局工程力学研究所，中国地震局地震工程与工程振动重点实验室，哈尔滨 150080

基金项目: 国家重点研发计划(2017YFC1500801)；连云港职业技术学院院级科研项目(YKJ201818)

详细信息

作者简介:
崔恩文，男，生于1987年。讲师。从事高速铁路地震预警技术研究。E-mail：1727170471@qq.com

通讯作者:
郭恩栋，男，生于1966年。研究员。主要从事生命线工程抗震研究。E-mail：iemged@263.net

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出版历程
- 收稿日期: 2020-09-01
- 刊出日期: 2021-09-30

Improved Calculation of Standardized Cumulative Absolute Velocity and Its Seismic Alarm Threshold for High-speed Railway

Cui Enwen^1
,,
Guo Endong^{2
, ,},
Wang Qian¹,
Sun Xun²

1.
Lian Yun Gang Technical College, Lianyungang 222000, Jiangsu, China
2.
Institute of Engineering Mechanics, China Earthquake Administration; Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration, Harbin 150080, China

摘要

摘要: 为降低无破坏性的近震小震对高速铁路地震报警的干扰，本文引入改进的标准化累积绝对速度作为报警参数，研究基于改进的标准化累积绝对速度地震报警阈值计算方法。通过建立车轨模型，分析不同周期横向简谐波作用下的列车安全运行极限状态，得出不同车速下改进的标准化累积绝对速度的起算阈值。参照标准化累积绝对速度CAV_STD计算公式，给出不同车速下改进的标准化累积绝对速度计算公式，并计算不同时速下列车分别在6条不同场地地震波作用下改进的标准化累积绝对速度报警阈值。
- 标准化累积绝对速度 /
- 车轨模型 /
- 起算阈值 /
- 报警阈值
Abstract: In order to reduce the interference of the non-destructive near-shock earthquake to the high-speed railway earthquake alarm, this paper introduces improved calculation of standardized cumulative absolute velocity as the alarm parameter, and studies the improved calculation of standardized cumulative absolute velocity as the calculation method of the earthquake alarm threshold. By establishing the vehicle track model and analyzing the safe running limit state of the train under the action of simple harmonic waves of different periods, the starting threshold of improved calculation of standardized cumulative absolute velocity at different vehicle speeds is obtained. Referring to the calculation formula of the standard cumulative absolute speed CAV_STD, the calculation formula of improved calculation of standardized cumulative absolute velocity at different vehicle speeds is given. According to this formula, the improved standardized cumulative absolute velocity alarm thresholds of trains at different speeds under the action of six seismic waves at different sites are given for reference.
- Standardized cumulative absolute velocity /
- Vehicle rail model /
- Starting threshold /
- Alarm threshold

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图 1 列车安全运行极限状态下不同车速对应的简谐波幅值随周期的变化关系

Figure 1. The relationship between the amplitude of simple harmonic wave corresponding to different speeds and periods under the safe running limit state of the train

下载: 全尺寸图片幻灯片

图 2 6条地震波加速度反应谱

Figure 2. Acceleration response spectra of six seismic waves

下载: 全尺寸图片幻灯片

表 1 不同车速下简谐波幅值趋于常数对应的起始周期及该常数的数值

Table 1. The initial period of the simple harmonic wave amplitude tending to be constant at different speeds and the value of the constant

项目	车速/（km·h⁻¹）
项目	200	250	300	350	400
起始周期T_st/s	2.2	2.3	2.1	2.0	1.7
A_min/g	0.008	0.004	0.004	0.004	0.004

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表 2 不同车速下改进的标准化累积绝对速度起算阈值

Table 2. Starting threshold of improved calculation of standardized cumulative absolute velocity at different speeds

项目	车速/（km·h⁻¹）
项目	200	≥250
改进的标准化累积绝对速度起算阈值/g	0.008	0.004

下载: 导出CSV

表 3 地震波相关信息

Table 3. Seismic wave information

项目	地震波台站名称
项目	Cape Mendocino	TCU045	Capitola	Hector	EL Centro Imp. Co. Cent	Poe Road
震级	7.01	7.62	6.93	7.13	6.54	6.54
峰值加速度/g	0.376 5	0.008 1	0.528 5	0.265 6	0.357 9	0.446 3
v₃₀/（m·s⁻¹）	567.78	704.64	288.62	726.00	192.05	316.64
加速度记录持时/s	36.0	45.0	39.9	45.3	40.0	22.3

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表 4 不同车速下6条地震波加速度上限值与改进的标准化累积绝对速度上限值

Table 4. The upper limit of acceleration amplitudes and upper limit improved calculation of standardized cumulative absolute velocity CAV of six seismic waves at different speeds

地震波台站名称	车速200 km/h		车速250 km/h		车速300 km/h		车速350 km/h		车速400 km/h
地震波台站名称	加速度上限值/ g	改进的标准化累积绝对速度上限值/g-sec	加速度上限值/ g	改进的标准化累积绝对速度上限值/g-sec	加速度上限值/ g	改进的标准化累积绝对速度上限值/g-sec	加速度上限值/ g	改进的标准化累积绝对速度上限值/g-sec	加速度上限值/ g	改进的标准化累积绝对速度上限值/g-sec
Cape Mendocino	0.074	0.17	0.070	0.17	0.055	0.13	0.040	0.09	0.039	0.09
TCU045	0.101	0.55	0.090	0.49	0.078	0.43	0.062	0.34	0.039	0.21
Capitola	0.109	0.34	0.078	0.25	0.062	0.20	0.054	0.17	0.039	0.11
Hector	0.101	0.27	0.070	0.19	0.062	0.17	0.054	0.14	0.047	0.12
EL Centro Imp. Co. Cent	0.078	0.16	0.070	0.18	0.054	0.13	0.039	0.08	0.027	0.05
Poe Road	0.074	0.19	0.054	0.14	0.043	0.11	0.039	0.10	0.035	0.08

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表 5 不同车速下改进的标准化累积绝对速度高速铁路地震报警阈值

Table 5. High-speed earthquake alarm threshold based on improved calculation of standardized cumulative absolute velocity thresholds at different vehicle speeds

项目	车速/（km·h⁻¹）
项目	200	250	300	350	400
报警阈值/g-sec	0.16	0.14	0.11	0.08	0.05

下载: 导出CSV

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