Computers and Geotechnics最新文献_第2页

Effects of mixed planting on stability of three-dimensional vegetated slope under extreme rainfall 极端降雨条件下混作对三维植被边坡稳定性的影响

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-21 DOI: 10.1016/j.compgeo.2025.107287

Qi Zhang , Junjun Ni , Haowen Guo

{"title":"Effects of mixed planting on stability of three-dimensional vegetated slope under extreme rainfall","authors":"Qi Zhang , Junjun Ni , Haowen Guo","doi":"10.1016/j.compgeo.2025.107287","DOIUrl":"10.1016/j.compgeo.2025.107287","url":null,"abstract":"<div><div>To address the ecological restoration and slope stabilization needs, various plant species are utilized in soil bioengineering techniques. Existing studies consider only single-species due to lack of suitable modelling approach for hydro-mechanical reinforcements of individual species in a mixed-species condition. This study presents three-dimensional numerical analyses to investigate the hydrological response and stability of vegetated slopes under mixed planting conditions. A novel 3D numerical model is employed for simulating hydrological and mechanical reinforcements of different plant species, namely grass and shrub. Three series of numerical parametric studies are conducted: grass-only, shrub-only, and mixed grass-shrub planting conditions. The computed results illustrate that the factor of safety under mixed planting condition surpasses that of the shrub-only condition, primarily due to the amplified hydrological benefits. The interplay of plant spacing and mixed planting is also evident in 3D vegetated slopes. As plant spacing widens from 1 m to 3 m, the differences induced by mixed planting in retained suction following a 100-year extreme rainfall event significantly increase from 24 % to 75 %. The enhanced factor of safety resulting from the adoption of a mixed planting strategy escalates from 3 % to 16 %. Therefore, it is recommended that bioengineering designs for slope stabilization can incorporate mixed planting to reduce planting density.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107287"},"PeriodicalIF":5.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

The pile-soil integrated element analysis method for laterally loaded pile in sand based on three-dimensional conical strain wedge model 基于三维锥形应变楔模型的砂土中横向荷载桩桩土综合元分析方法

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-20 DOI: 10.1016/j.compgeo.2025.107277

Jie Jiang , Wencheng Chai

{"title":"The pile-soil integrated element analysis method for laterally loaded pile in sand based on three-dimensional conical strain wedge model","authors":"Jie Jiang , Wencheng Chai","doi":"10.1016/j.compgeo.2025.107277","DOIUrl":"10.1016/j.compgeo.2025.107277","url":null,"abstract":"<div><div>Accurately simulating pile-soil interaction (PSI) is crucial for predicting the lateral behavior response of piles. For the three-dimensional nonlinear problem of pile-soil interaction, this study proposes an innovative three-dimensional conical strain wedge (3D CSW) model. The model’s conical characteristics and the tangential shear stress on the side surface can more reasonably describe the soil failure pattern and stress state. On this basis, virtual soil spring elements for describing the 3D PSI are integrated into the pile element at the Gaussian points to form the pile-soil integrated element. Its advantage is that the pile-soil integrated element effectively reduces the number of soil spring elements while accurately capturing the 3D PSI response, thereby improving the calculation efficiency for the laterally loaded pile. Validation and analysis suggest that the agreement between the results from the 3D CSW model and those from the full-scale field test and the centrifuge model test is generally satisfactory. The pile-soil integrated element analysis method requires only around 25% of the computational effort while maintaining sufficient accuracy. Through the discussion of the relevant parameters and influencing factors of piles and soil, the rationality and good applicability of the 3D CSW model and the pile-soil integrated element analysis method are further demonstrated.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107277"},"PeriodicalIF":5.3,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Temperature-dependent hardening and constitutive modelling of frozen rocks: Insights into plastic energy dissipation 冻结岩石的温度依赖硬化和本构模型：对塑性能量耗散的见解

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-19 DOI: 10.1016/j.compgeo.2025.107279

Shangqi Zhou , Shuangyang Li , Jianyuan Zhao , Yongchun Zhao , Qi Jiang

{"title":"Temperature-dependent hardening and constitutive modelling of frozen rocks: Insights into plastic energy dissipation","authors":"Shangqi Zhou , Shuangyang Li , Jianyuan Zhao , Yongchun Zhao , Qi Jiang","doi":"10.1016/j.compgeo.2025.107279","DOIUrl":"10.1016/j.compgeo.2025.107279","url":null,"abstract":"<div><div>Fluctuating sub-zero temperatures trigger the phase transitions of ice and water in rocks within cold regions, resulting in a strong temperature-dependent nonlinear stress–strain relationship in frozen rocks. However, existing constitutive models for frozen rocks are established and derived at a given temperature, failing to consider the dynamic impact of temperature changes on plastic hardening and nonlinear mechanical behaviour, thus failing to accurately capture the stress–strain characteristics of rocks under temperature fluctuations. To address this issue, this study derives a hardening law from the perspective of energy dissipation and proposes a unified temperature-dependent constitutive model within a thermodynamic framework to accurately describe the stress–strain behaviour of frozen rocks under continuously changing temperature conditions. To validate its applicability, triaxial tests were conducted at specific temperatures on frozen coal rock and frozen sandstone, along with two multi-temperature uniaxial tests on frozen coal rock. A comparison between the computed results and experimental data reveals a high degree of agreement, demonstrating the reliability and accuracy of the proposed model. The results confirm that the proposed model not only captures the stress–strain behaviour of different frozen rocks at fixed temperatures but also effectively characterizes their mechanical response under dynamic thermal conditions, providing quantitative insights into the relationship between plastic energy dissipation and temperature. The constitutive model proposed in this paper offers new insights into the impact of temperature variations on the mechanical behaviour of frozen rocks and can be integrated into commercial finite element calculation software to provide more reasonable solutions for the mechanical behaviour of cold region rocks under arbitrary temperature changes.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107279"},"PeriodicalIF":5.3,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Mineral grain-texture model and impact on microcracking and mechanical response of granite 矿物颗粒结构模型及其对花岗岩微裂纹和力学响应的影响

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-19 DOI: 10.1016/j.compgeo.2025.107286

Suifeng Wang , Tao Wang , Derek Elsworth , Xianyu Zhao , Liping Zhang

{"title":"Mineral grain-texture model and impact on microcracking and mechanical response of granite","authors":"Suifeng Wang , Tao Wang , Derek Elsworth , Xianyu Zhao , Liping Zhang","doi":"10.1016/j.compgeo.2025.107286","DOIUrl":"10.1016/j.compgeo.2025.107286","url":null,"abstract":"<div><div>Granites are representative of generic crystalline rocks characterized by their complex crystal-grain structure. Variations in the composition, size, shape and orientation of mineral grains result in pronounced heterogeneity and anisotropy at the microscopic scale, significantly influencing mechanical properties as well as the initiation and propagation of microcracks. A grain-texture model (GTM) is used to characterize the microstructural features of porphyritic monzogranite, based on the “templated” − “grain growth” method. This addresses the limitations inherent in Grain-Based Models (GBM) that do not allow for modifications to mineral grain shapes. The accuracy of this novel model was validated through comparisons between numerical and experimental results. Subsequent validations were against granite models with varying biotite contents to examine related mechanical and microcracking response as a result of component mineral properties, shape and orientation. Changes in biotite content influence heterogeneity and consequently both mechanical properties and failure characteristics of the composite granites. As biotite strength decreases, there is an increased likelihood for cracks to initiate and propagate within it; correspondingly, the decrease in stiffness of the biotite has a notable impact on the pattern and path of crack propagation. Alteration in the shape and orientation of mineral grains results in significant changes in the anisotropy of granite through impact on the number and arrangement of grain boundary contacts. When these boundary contact orientations align with fracture directions, rocks exhibit an increased propensity for the evolution of throughgoing fractures and macroscale failure.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107286"},"PeriodicalIF":5.3,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Initial hydration characteristics of dry montmorillonite and insights for water transport mechanisms in nanochannels 干蒙脱土的初始水化特性及纳米通道中水输运机制研究

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-18 DOI: 10.1016/j.compgeo.2025.107288

Bonan Li , Chengkai Li , Yilin Gui , Haifei Zhan , Yuantong Gu , Miao Yu , R. Kerry Rowe

{"title":"Initial hydration characteristics of dry montmorillonite and insights for water transport mechanisms in nanochannels","authors":"Bonan Li , Chengkai Li , Yilin Gui , Haifei Zhan , Yuantong Gu , Miao Yu , R. Kerry Rowe","doi":"10.1016/j.compgeo.2025.107288","DOIUrl":"10.1016/j.compgeo.2025.107288","url":null,"abstract":"<div><div>The early stages of the hydration process in dehydrated montmorillonite (MMT) are crucial for understanding the transition mechanisms between different hydration states of clay minerals. While X-ray Diffraction (XRD) experiments and models provide a macroscopic understanding of the hydration processes of clay minerals, there is still a lack of microscopic models for the transition processes of hydration states, making understanding these transitions at the molecular scale a challenging issue. In this study, molecular dynamics simulations were used to analyze the initial hydration process of water molecules in the dry interlayers of MMT, the mechanisms of their transport, and the influencing conditions. It was found that hydroxyl (–OH) groups formed at the edges of clay particles hinder the entry of water molecules into the montmorillonite channels. Additionally, the properties such as water flux, pressure, and potential energy of the channels were calculated. It was found that the initial hydration process of montmorillonite is influenced by initial conditions such as size, velocity, temperature, interlayer cation type, and number of cations. Entrance effects, exit effects, and disturbances of water molecules were also observed during the initial hydration process. An increase in the ratio of the inlet and outlet sizes of the montmorillonite channel reduces the entrance/exit effect on the density, velocity, and number of water molecules transported, affecting the path of motion of the water transport. In addition, it was found that the number, size, and position of interlayer cations can have a perturbing effect on water molecule transport. The results of this study can be used for the preparation and development of high-precision nanomontmorillonite, the permeation assessment of nuclear waste barriers, and the development of nano-MMT films.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107288"},"PeriodicalIF":5.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Peridynamic modeling and analysis of interfacial crack propagation by hydraulic fracturing in layered shale 层状页岩水力压裂界面裂缝扩展的动力学模拟与分析

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-17 DOI: 10.1016/j.compgeo.2025.107280

Yingru Lu , Zhuang Cai , Dan Huang , Xuehao Yao , Qipeng Ma , Ding Chen

{"title":"Peridynamic modeling and analysis of interfacial crack propagation by hydraulic fracturing in layered shale","authors":"Yingru Lu , Zhuang Cai , Dan Huang , Xuehao Yao , Qipeng Ma , Ding Chen","doi":"10.1016/j.compgeo.2025.107280","DOIUrl":"10.1016/j.compgeo.2025.107280","url":null,"abstract":"<div><div>Hydraulic fractures at the bedding interface in layered shale will give rise to various phenomena including penetration, diversion and offset which significantly influence the production of shale gas exploitation. It is persistent challenge to simulate the uncertain fracture propagation paths induced by hydraulic fracturing when encountering interfaces. In this study, an alternative peridynamic model is proposed to investigate the interfacial crack propagation by hydraulic fracturing in layered shale. The water pressure loading process is described through equivalently transforming the water pressure applied on fracture surfaces into the water pressure density on broken bonds. The interface model and its cracking criterion are derived by employing bilinear cohesive zone model, which effectively characterize the interactions between rocks with different properties on different sides of the bedding plane. The proposed model is validated through comparison with experimental results, and then is further employed to investigate the complex hydraulic fracture propagation near bedding interfaces. It is found that smaller angle between hydraulic fracturing direction and bedding may lead to better fracturing effects and higher gas extraction in layered shale.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107280"},"PeriodicalIF":5.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

A new integrated model of confinement-sensitive damage and bi-mechanism plasticity for rock-like materials 一类岩石材料的约束敏感损伤与双机制塑性综合新模型

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-17 DOI: 10.1016/j.compgeo.2025.107255

Xiaoli Wei , Xiaodan Ren

{"title":"A new integrated model of confinement-sensitive damage and bi-mechanism plasticity for rock-like materials","authors":"Xiaoli Wei , Xiaodan Ren","doi":"10.1016/j.compgeo.2025.107255","DOIUrl":"10.1016/j.compgeo.2025.107255","url":null,"abstract":"<div><div>An integrated constitutive model has been developed for rock-like materials, incorporating confinement-sensitive damage and bi-mechanism plasticity. The model aims to improve the capability of the conventional damage model in depicting the strengthening and brittle-to-ductile transitions that occur under both active and passive confinement conditions. A thermodynamic analysis of energy transformation and dissipation, considering both damage and plasticity, underpins the model’s development. The model, rooted in damage-plastic theory, has been divided into two sub-models: (1) Confinement-Sensitive Model: This sub-model addresses the strengthening and ductility enhancements due to active confinement stress. It effectively captures the mechanical responses of rock-like materials under various levels of active confining stresses. (2) Endochronic Dilatancy Model: Based on endochronic theory, a separate dilatancy strain model is proposed, which effectively facilitates the interplay between lateral dilatancy and the growth of passive confining stress. Both sub-models, as well as the integrated model, have undergone validation using experimental data, including uniaxial tests, cyclic loading tests, actively confined tests, and passively confined tests of rock-like materials. These validations confirm the model’s accuracy and reliability in predicting the mechanical behavior of rock-like materials under complex loading conditions.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107255"},"PeriodicalIF":5.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Stabilized reduced-integration u-w coupled element for 3D dynamic modelling of saturated soils 饱和土三维动力学模型的稳定减积分u-w耦合单元

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-17 DOI: 10.1016/j.compgeo.2025.107258

Zexu Fan , Yong Yuan , Roberto Cudmani , Stylianos Chrisopoulos

{"title":"Stabilized reduced-integration u-w coupled element for 3D dynamic modelling of saturated soils","authors":"Zexu Fan , Yong Yuan , Roberto Cudmani , Stylianos Chrisopoulos","doi":"10.1016/j.compgeo.2025.107258","DOIUrl":"10.1016/j.compgeo.2025.107258","url":null,"abstract":"<div><div>Three-dimensional numerical analysis is crucial in revealing the complex dynamic behaviour of saturated soil under multidirectional loadings. In this study, the derivation and implementation of a stabilized reduced-integration coupled element based on the <strong><em>u</em></strong>-<strong><em>w</em></strong> formulated Biot theory are presented. The key improvement of this element is the modification of non-constant solid and fluid strains based on the enhanced strain method (ESM) and assumed strain method (ASM), which ensures its stability in the incompressible-impermeable limit while maintaining an efficient bilinear interpolation scheme. Additionally, a mixed integration scheme is also employed to reduce the computational cost. The performance of the proposed element is evaluated using two benchmark problems, and comparisons with analytical methods and other coupled elements demonstrate its superiority in terms of accuracy, stability, and efficiency. The applicability of the element in more complex geotechnical scenarios is further demonstrated by investigating soil liquefaction under uni- and bi- directional shakings. The results demonstrate that both the extent and severity of field liquefaction are significantly greater under bidirectional loadings compared to those under Airas-equivalent unidirectional loadings. This highlights the necessity of three-dimensional analyses for problems involving multidirectional loading conditions, as the negligence of out-of-plane loadings and strains in plane-strain analyses could result in unsafe engineering designs.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107258"},"PeriodicalIF":5.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Numerical modelling of displacements induced by rainfall infiltration in a clayey soil slope: The Miscano (Southern Italy) case study 粘土坡面降雨入渗引起的位移数值模拟：米斯卡诺（意大利南部）案例研究

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-16 DOI: 10.1016/j.compgeo.2025.107267

Ali Tawalo , Gaetano Falcone , Marianna Pirone , Anna d’Onofrio , Gianfranco Urciuoli

{"title":"Numerical modelling of displacements induced by rainfall infiltration in a clayey soil slope: The Miscano (Southern Italy) case study","authors":"Ali Tawalo , Gaetano Falcone , Marianna Pirone , Anna d’Onofrio , Gianfranco Urciuoli","doi":"10.1016/j.compgeo.2025.107267","DOIUrl":"10.1016/j.compgeo.2025.107267","url":null,"abstract":"<div><div>Predicting cumulative surface slope displacements induced by rainfall infiltration is crucial for accurately assessing the risks to potentially affected infrastructure. In this paper the numerical modelling of the case history of Miscano slope is presented. Plaxis 2D code has been used adopting two constitutive laws: the linear elasto-plastic model (Mohr-Coulomb, MC) and the Hardening Soil with small strain stiffness (HSsmall). The aim is to test the suitability of these constitutive laws in predicting the hydro-mechanical behaviour of clayey soil slope. Based on long-term field measurements, the parameters of MC and HSsmall have been determined by back analysing the first-year field measurements in terms of cumulative surficial horizontal displacements and pore water pressure. Subsequently, the numerical models have been validated against the analogous field measurements collected from the second year. The numerical models predict with a good agreement the field measurements for both years. In terms of cumulative surficial horizontal displacements, the HSsmall underestimates the field measurements by 21.2% at the end of the first year, while that based on MC exhibits a 32.8% overestimation. Moreover, the initialization procedure clearly affects the cumulative surficial horizontal displacements results obtained with both the HSsmall and MC models for the second year. In fact, the best results have been achieved when the second-year net rainfall have been applied starting from the initial phase used to generate the lithostatic stress state.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107267"},"PeriodicalIF":5.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Development of a p-multiplier for laterally loaded single batter piles in sand based on simple upper bound analysis 基于简单上限分析的砂土单桩横向荷载p乘法器的研制

IF 5.3 1区工程技术

Computers and Geotechnics Pub Date : 2025-04-16 DOI: 10.1016/j.compgeo.2025.107268

Xiaodong Shao , Meijuan Xu , Guoxiong Mei , M. Hesham El Naggar , Wenbing Wu

{"title":"Development of a p-multiplier for laterally loaded single batter piles in sand based on simple upper bound analysis","authors":"Xiaodong Shao , Meijuan Xu , Guoxiong Mei , M. Hesham El Naggar , Wenbing Wu","doi":"10.1016/j.compgeo.2025.107268","DOIUrl":"10.1016/j.compgeo.2025.107268","url":null,"abstract":"<div><div>Batter piles are prevalently found in foundation pits, bridges, transmission towers, and wharf structures, serving to withstand lateral loads. Nevertheless, the investigation and analysis methods related to batter piles remain scarce. Considering the limitations of existing <em>p</em>-multipliers for batter piles, this research develops an enhanced <em>p</em>-multiplier rooted in the soil failure mechanisms and upper bound analysis. The proposed <em>p</em>-multiplier is initially derived from simplified 2D soil failure modes, and then further enhanced based on extended 3D soil failure modes, which effectively reflect the 3D effects of soil-pile interaction. Comparative analyses demonstrate that the proposed <em>p</em>-multiplier well captures the influence of pile inclination and soil internal friction angle on soil resistance, showing superiority over previous studies. Moreover, incorporating the proposed <em>p</em>-multiplier with <span><math><mrow><mi>p</mi><mo>-</mo><mi>y</mi></mrow></math></span> curves allows rapid and fair assessment on the lateral behavior of single batter piles in sand, and the reliability is validated by two reported cases of batter piles. However, due to the ignorance of shaft friction and lateral component of axial displacement of batter pile, the proposed method is recommended for small batter angles. In the range of <span><math><mrow><mo>-</mo><msup><mn>15</mn><mo>°</mo></msup><mspace></mspace><msup><mn>15</mn><mo>°</mo></msup></mrow></math></span>, the proposed method is adequate as verified by the experimental results.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"184 ","pages":"Article 107268"},"PeriodicalIF":5.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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