[1]韩贇,朱浩杰,刘小刚,等.水位升降和潮汐水位作用下围堰的安全稳定性[J].华侨大学学报(自然科学版),2024,45(2):219-225.[doi:10.11830/ISSN.1000-5013.202310022]
　HAN Yun,ZHU Haojie,LIU Xiaogang,et al.Safety and Stability of Cofferdam Under Effects of Rising and Falling of Water Level and Tide Level[J].Journal of Huaqiao University(Natural Science),2024,45(2):219-225.[doi:10.11830/ISSN.1000-5013.202310022]
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水位升降和潮汐水位作用下围堰的安全稳定性()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第45卷
期数:
2024年第2期
页码:
219-225
栏目:
出版日期:
2024-03-20

文章信息/Info

Title:
Safety and Stability of Cofferdam Under Effects of Rising and Falling of Water Level and Tide Level
文章编号:
1000-5013(2024)02-0219-07
作者:
韩贇1;  朱浩杰2;  刘小刚1;  黄山景2
1. 中铁第一勘察设计院集团有限公司, 福建 厦门 361001;2. 华土木(厦门)科技有限公司, 福建 厦门 361021
Author(s):
HAN Yun1;  ZHU Haojie2;  LIU Xiaogang1;  HUANG Shanjing2
1. China Railway First Survey and Design Institute Group Limited Company, Xiamen 361001, China; 2. China Civil Engineering(Xiamen)Technology Limited Company, Xiamen 361021, China
关键词:
围堰;  安全稳定性;  水位升降;  潮汐水位;  安全系数;  数值模拟
Keywords:
cofferdam;  safety and stability;  rising and falling of water level;  tide level;  safety factor;  numerical simulation
分类号:
TU473
DOI:
10.11830/ISSN.1000-5013.202310022
文献标志码:
A
摘要:
为了分析水位升降和潮汐水位作用下滨海区域围堰的安全稳定性,基于厦门市集美岛车站工程实例,应用Plaxis有限元程序的非饱和土渗流理论,采用有限元强度折减法,进行不同水位升降速度及潮汐水位循环作用下围堰的稳定性分析,通过围堰的安全系数变化曲线分析水位变化对围堰稳定性影响的机理。结果表明:围堰安全系数在水位升高时减小,水位上升速度越快,围堰安全系数减小速率越大;水位下降时存在临界水位降速,临界水位降速为1.0 m·d-1,当水位下降速度超过临界水位降速时,围堰安全系数先减小后增大,当水位下降速度小于临界水位降速时,围堰安全系数逐渐增大;围堰安全系数在落潮时增大,在涨潮时减小,潮汐振幅越大,围堰安全系数增值越大,随着循环次数的增加,相邻两次循环间围堰安全系数增量逐渐减小并趋于稳定。
Abstract:
In order to analyze the safety and stability of coastal area cofferdam under the effects of the rising and falling of water level and tide level, basing on the engineering example of Jimei Island Station of Xiamen City, applying the seepage theory of unsaturated soil of Plaxis finite element program, and using the finite element strength reduction method, the safety and stability of cofferdam under the effects of different rising and falling speed of water level and tidal level circulation is carried out, the mechanism of the influence of water level change on the stability of cofferdam is analyzed through the change curve of safety factor of cofferdam. The results show that the safety factor of cofferdam decreases when the water level rises, and the faster the water level rises, the greater the reduction rate of the safety factor of cofferdam. There is a critical water level drop rate when the water level drops, the critical water level drop rate is 1.0 m·d-1, when the water level drop rate exceeds the critical water level drop rate, the safety factor of cofferdam first decreases and then increases, when the water level drop rate is less than the critical water level drop rate, the safety factor of coff-erdam increases gradually. The safety factor of cofferdam increases at low tide and decreases at high tide, the greater the tidal amplitude, the greater the increment of safety coefficient of cofferdam increases, the increment of safety factor of cofferdam between two adjacent cycles gradually decreases and tends to be stable with the increase of cycle times.

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备注/Memo

备注/Memo:
收稿日期: 2023-10-29
通信作者: 朱浩杰(1994-),男,工程师,主要从事基坑工程、隧道工程、地基处理及土木领域自动化监测技术的研究。E-mail:506657219@qq.com。https://hdxb.hqu.edu.cn
更新日期/Last Update: 2024-03-20