[1]沈春林,王伟,钟建,等.九圩港闸站枢纽工程场地粉砂土静、动力特性试验研究[J].江苏水利,2024,(07):47-52.
 SHEN Chunlin,WANG Wei,ZHONG Jian,et al.Experimental study on static and dynamic characteristics of silty soil in the site of Jiuwei Port Sluice Station Hub Project[J].JIANGSU WATER RESOURCES,2024,(07):47-52.
点击复制

九圩港闸站枢纽工程场地粉砂土静、动力特性试验研究()
分享到:

《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2024年07期
页码:
47-52
栏目:
水利工程建设
出版日期:
2024-07-15

文章信息/Info

Title:
Experimental study on static and dynamic characteristics of silty soil in the site of Jiuwei Port Sluice Station Hub Project
文章编号:
1007-7839(2024)07-0047-0006
作者:
沈春林1王伟1钟建1吴建伟2
(1. 南通市九圩港水利工程管理所,江苏 南通 226003;2. 南通市通吕运河水利工程管理所,江苏 南通 226000)
Author(s):
SHEN Chunlin1 WANG Wei1 ZHONG Jian1 WU Jianwei2
(1. Nantong Jiuwei Port Water Conservancy Engineering Management Office, Nantong 226003, China;2. Nantong-Lvsi Canal Water Conservancy Engineering Management Office, Nantong 226000, China)
关键词:
九圩港闸站枢纽工程粉砂土三轴剪切动力特性
Keywords:
Jiuwei Port Sluice Station Hub Project silty soil triaxial shear dynamic characteristics
分类号:
TU521
文献标志码:
A
摘要:
为研究九圩港闸站枢纽工程场地含化学污染物Cu2+的粉砂土承载能力,设计开展了三轴静力测试与循环动荷载加卸试验。试验数据分析表明:围压对粉砂土试样应变特征影响高于化学污染物Cu2+含量,而化学污染物会削弱试样承载能力,且削弱效应逐步增强;在动荷载循环加卸过程,不同强度的围压作用,试样内部孔隙结构演化路径各有区别;当化学污染物Cu2+含量增大,则孔压分布愈低,而随着循环振次进程加快,则各Cu2+含量试样之间的孔压差幅更大;在各围压作用下,动弹性模量随应变均为“递减-稳定”变化特征,围压作用还会影响化学污染物含量对动弹性模量参数影响效应。
Abstract:
To study the bearing capacity of silty soil containing chemical pollutant Cu2+ in the Jiuwei Port Sluice Station Hub Project site, triaxial static tests and cyclic dynamic load loading and unloading tests were designed and carried out. Based on experimental data analysis, it is shown that the influence of confining pressure on the strain characteristics of silty soil samples is higher than that of chemical pollutant Cu2+ content, and chemical pollutants weaken the bearing capacity of the samples, and the weakening effect gradually strengthens. During the process of cyclic loading and unloading under dynamic loads, the evolution paths of the internal pore structure of the specimen vary with different intensities of confining pressure. When the content of chemical pollutant Cu2+ increases, the pore pressure distribution becomes lower, and as the cyclic vibration process accelerates, the pore pressure difference between samples with different Cu2+ contents become larger. Under various confining pressures, the dynamic elastic modulus exhibits a “decreasing stable” variation characteristic with strain, and the confining pressure also affects the effect of chemical pollutant content on the dynamic elastic modulus parameters.

参考文献/References:

[1]袁肇彦. 基于管桩改良下水工地基软土力学试验研究[J]. 海河水利,2023(3):74-79.
[2]于建兵. 软土地基处理技术在泔河水库除险加固中的应用[J]. 中国水能及电气化,2023(3):39-42.
[3]李丽华,李欣,李文涛,等. 碱渣-矿渣固化铜污染土力学及浸出特性[J]. 中国科技论文,2023,18(6):687-693.
[4]荣帆,王宇,谢明星,等. 一般工业固废复合固化重金属污染土的力学及电化学性能[J]. 科学技术与工程,2023,23(9):3849-3858.
[5]何忠明,王盘盘,张文周,等. 考虑不同单次加载时长影响的循环荷载作用下软土动力特性[J]. 长安大学学报(自然科学版),2023,43(5):30-39.
[6]郑言林. 循环荷载作用下重金属污染膨胀土动力特性试验研究[D]. 郑州:中原工学院,2019.
[7]郭竟语,汪新凯,马雅林,等. 孟加拉地区典型砂土抗液化特性动三轴试验研究[J]. 路基工程,2023(3):62-67.
[8]杨爱武,王斌彬,姜帅. 干湿冻融耦合作用下碱渣固化轻质土动力特性研究[J]. 工程地质学报,2022,30(6):1962-1973.
[9]王小平,吴炎,谢丽文,等. 不同浓度CuSO4污染黏性土力学特性研究[J]. 土工基础,2021,35(6):759-763.
[10]郭竟语,汪新凯,马雅林,等. 孟加拉地区典型砂土抗液化特性动三轴试验研究[J]. 路基工程,2023(3):62-67.
[11]吴柯夫,鲁云岗. 干湿循环条件下风化红砂岩粗粒土动弹性模量研究[J]. 湖南交通科技,2023,49(1):22-27.

备注/Memo

备注/Memo:
收稿日期:2024-03-26
作者简介:沈春林(1990—),男,工程师,本科,主要从事泵站、水闸运行管理工作。E-mail:pk5603@163.com
更新日期/Last Update: 2024-07-15