Soil Mechanics and Foundation Engineering最新文献_第2页

Dynamic Stability Analysis of a Wharf under Cyclic Loading Considering the Weakening Effect of a Soft Foundation 考虑软地基削弱效应的循环荷载下的码头动态稳定性分析

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-07-30 DOI: 10.1007/s11204-024-09964-w

Bing Xiao

{"title":"Dynamic Stability Analysis of a Wharf under Cyclic Loading Considering the Weakening Effect of a Soft Foundation","authors":"Bing Xiao","doi":"10.1007/s11204-024-09964-w","DOIUrl":"https://doi.org/10.1007/s11204-024-09964-w","url":null,"abstract":"Creep deformation and softening of soft soil foundations under long-term wave loading can cause gravity wharves to experience problems such as excessive settlement, displacement, and sliding, compromising the safety of the wharf structure. In this study, we conduct mechanical index and vibration tests on consolidated and undrained soft soil specimens to analyze the changes in the soil dynamic characteristics with strain under different confining pressures. Subsequently, the dynamic deformation and strength characteristics of the soft soil obtained from triaxial tests are used to develop a finite element model of the wave–gravity structure–soft soil foundation system. Using this model, analyses are conducted by varying the friction angle to simulate the change in the soft soil strength as the number of wave cycles increases. The results are evaluated to investigate the failure mechanism of the foundation and the bearing characteristics of the riprap bed atop the soft soil. The results indicate that the shear modulus of the soil is related to the effective confining pressure and the shear strain; this relationship is fitted using the Van Genuchten equation. As the internal friction angle of the soft soil foundation decreases, its stability decreases nonlinearly, its strength decreases, and its sliding failure surface lengthens. However, simply increasing the riprap layer thickness has a limited effect on the overall wharf stability. These findings will improve the design of gravity wharves founded on soft soils in port areas with intense wave action.","PeriodicalId":21918,"journal":{"name":"Soil Mechanics and Foundation Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of the Consolidation Coefficient of Soft Soil Based on Machine Learning Models 基于机器学习模型的软土固结系数预测

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-07-30 DOI: 10.1007/s11204-024-09966-8

Caijin Wang, Yang Yang, Jianxin Chang, Guojun Cai, Huan He, Meng Wu, Songyu Liu

{"title":"Prediction of the Consolidation Coefficient of Soft Soil Based on Machine Learning Models","authors":"Caijin Wang, Yang Yang, Jianxin Chang, Guojun Cai, Huan He, Meng Wu, Songyu Liu","doi":"10.1007/s11204-024-09966-8","DOIUrl":"https://doi.org/10.1007/s11204-024-09966-8","url":null,"abstract":"The coefficient of consolidation (Cv) of soft soil is a parameter that reflects the consolidation characteristics of soil under load, but it usually costs a lot in time and money to test. In this paper, an artificial neural network (ANN) and a support vector machine (SVM) are used to establish the Cv prediction model, and the soft soil data of Guigang Beihai Expressway in Guangxi are used to train and test the model. Eleven physical and mechanical parameters of soft soil are statistically analyzed by correlation matrix. Four parameters are determined as input parameters of the calculation model to train and test the calculation model, and the performance and robustness of the prediction model are checked. The results show that the ANN model and SVM model both accurately calculate the Cv, with coefficient of correlation R2 > 0.91, root mean square error RMSE < 0.2079 cm2/1000s, and variance ratio VAF > 90%. The prediction accuracy of the ANN model is better than that of the SVM model, and the Monte Carlo simulation results show that the SVM model is most robust. Therefore, the consolidation coefficient is connected with other physical and mechanical parameters, and the ANN model and SVM model are used to predict the Cv, which provides a new idea for fast calculation of the Cv.","PeriodicalId":21918,"journal":{"name":"Soil Mechanics and Foundation Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy Dynamic Characteristics of Seismic Wave Propagation in Bedrock and Overburden Layer Slope 基岩和覆盖层斜坡中地震波传播的能量动态特性

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-07-30 DOI: 10.1007/s11204-024-09967-7

Honglue Qu, Zhe Zhang, Ya’nan Gao, Qian Mei, Yuanyuan Deng

{"title":"Energy Dynamic Characteristics of Seismic Wave Propagation in Bedrock and Overburden Layer Slope","authors":"Honglue Qu, Zhe Zhang, Ya’nan Gao, Qian Mei, Yuanyuan Deng","doi":"10.1007/s11204-024-09967-7","DOIUrl":"https://doi.org/10.1007/s11204-024-09967-7","url":null,"abstract":"When a seismic wave propagates through a bedrock cover discontinuity, mutations in seismic wave propagation characteristics occur owing to reflection and transmission. In this study, based on the medium model and motion equation, the medium of the bedrock and overburden layer slope were connected by boundary conditions, the variation law of the seismic wave reflection and transmission coefficients at the bedrock cover discontinuity were analyzed, and the attenuation characteristics of the energy of the bedrock and overburden layer slope were studied. It was concluded that the transmission coefficients of the P, SV, and SH waves decreased with increasing incident angle. Further, with increasing incident angle, the reflection coefficients of the P and SH waves first decreased and then increased, whereas that of the SV wave first increased and then decreased. When the incident angle was constant, the attenuation of the seismic wave energy by the bedrock cover interface was directly proportional to the attenuation ratio of the interface. Thus, the attenuation of seismic wave energy first increased and then decreased with increasing incident angle.","PeriodicalId":21918,"journal":{"name":"Soil Mechanics and Foundation Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Settlement and Long-Term Bearing Capacity of a Circular Foundation on an Elastic-Viscoplastic Base 弹性粘弹性基座上圆形地基的沉降和长期承载能力

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-07-30 DOI: 10.1007/s11204-024-09961-z

A. Z. Ter-Martirosyan, K. A. Filippov

引用次数: 0

Load Test on Barrette in Multi-Layered Soil 多层土壤中的巴雷特载荷试验

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-05-31 DOI: 10.1007/s11204-024-09951-1

Anil Cherian

引用次数: 0

Determination of the Kernel of a Deformable Foundation Model from Experimental Data 根据实验数据确定可变形地基模型的内核

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-05-31 DOI: 10.1007/s11204-024-09950-2

V. I. Travush, S. O. Shulyatyev

引用次数: 0

Shear Strength Behavior of Clayey Soil Reinforced with Natural Agent-Treated Coir Fiber 用天然药剂处理过的椰壳纤维加固的粘性土的剪切强度行为

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-05-31 DOI: 10.1007/s11204-024-09955-x

Gautam, Vishnu G, Debjit Bhowmik

引用次数: 0

Experimental Investigation of the Behavior of Executed Pile Models with Applied Torque in Frustum Confining Vessels 对带有应用扭矩的执行桩模型在坚硬的密闭容器中的行为的实验研究

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-05-31 DOI: 10.1007/s11204-024-09957-9

S. HejaziRad, S. Ghareh, A. Eslami, N. Ganjian

{"title":"Experimental Investigation of the Behavior of Executed Pile Models with Applied Torque in Frustum Confining Vessels","authors":"S. HejaziRad, S. Ghareh, A. Eslami, N. Ganjian","doi":"10.1007/s11204-024-09957-9","DOIUrl":"https://doi.org/10.1007/s11204-024-09957-9","url":null,"abstract":"A deep foundation is used to transfer the load of tall and large structures to the underlying soil layers with a sufficient strength. Over the last few decades, a new type of piles has been executed in developed countries using torque with the development of hydraulic devices that can create high torques. Due to the emergence of these deep foundations, the scope of studies in this regard are limited. Thus, studying the behavior of these foundations can increase the breadth of their application in other countries while creating a better understanding of their behavior. In the present research, some models of this type of pile have been created and studied using laboratory equipment and static loading. Execution of drilled displacement and helical piles in the FCV-AUT device as well as running static compression and tension load tests were done according to ASTM D1143 and ASTM D3689 standards. Experiments on the executions have been studied in two modes of density: relative density of 20% to 25% and of 45% to 50%. Accordingly, drilled displacement piles show good performance in terms of compression and tension bearing capacity compared to other piles, while the required installation torque for this pile shows higher values.","PeriodicalId":21918,"journal":{"name":"Soil Mechanics and Foundation Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Nano and Ordinary Particles of Silica on the Swelling Properties of Expansive Soil 纳米和普通二氧化硅颗粒对膨胀土膨胀特性的影响

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-05-31 DOI: 10.1007/s11204-024-09958-8

W. H. A. El-Samea, Y. M. Mowafy, M. A. A. El-Naiem, A. R. Towfeek

引用次数: 0

Effect of the Rock Blasting Sequence on Buildings Adjacent to the Hehui Expressway 岩石爆破顺序对合惠高速公路附近建筑物的影响

IF 0.8 4区工程技术

Soil Mechanics and Foundation Engineering Pub Date : 2024-05-31 DOI: 10.1007/s11204-024-09959-7

Weikang Cheng, Wanjun Ye, Xiaonan Chen, Zihao Zhou, Yuntao Wu

{"title":"Effect of the Rock Blasting Sequence on Buildings Adjacent to the Hehui Expressway","authors":"Weikang Cheng, Wanjun Ye, Xiaonan Chen, Zihao Zhou, Yuntao Wu","doi":"10.1007/s11204-024-09959-7","DOIUrl":"https://doi.org/10.1007/s11204-024-09959-7","url":null,"abstract":"The cutting blasting project of the Hehui Expressway is close to existing buildings. Vibration reduction measures based on a fine blasting design are put forward to ensure the safety of the project and existing buildings. The project is divided into three blasting areas for construction. This paper investigates “first middle and then edge” and “first edge and then middle” blasting sequences and the vibration responses of adjacent buildings. For the cutting blasting project of the Hehui Expressway, the different blasting sequences are investigated according to the positional relationship between three blasting areas and an existing village, and a reasonable blasting sequence is determined through numerical simulation, on-site blasting tests, and the on-site vibration response data of adjacent buildings. The results show that the existing buildings can be effectively protected by changing the construction sequence of the blasting area on the premise of ensuring the effectiveness and safety of construction. Zone II can be regarded as a huge blasting isolation hole that plays a positive role in the control and attenuation of the blasting stress wave. Blasting in Zone II thus has an excellent vibration reduction effect exceeding 90%. With the adoption of the “first middle and then side” construction sequence, the maximum particle velocity of existing buildings under the action of the blasting stress wave is 1.1 cm/s, which is within a reasonable safety range.","PeriodicalId":21918,"journal":{"name":"Soil Mechanics and Foundation Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0