International Journal of Civil Engineering最新文献_第9页

Experimental and Numerical Studies of the Failure Mode and Mechanical Performance of Helices in Screw Piles 螺旋桩螺旋的失效模式和机械性能的实验和数值研究

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-12-14 DOI: 10.1007/s40999-023-00923-4

Songzhao Qu, Quan Zhang, Yonghua Guo

{"title":"Experimental and Numerical Studies of the Failure Mode and Mechanical Performance of Helices in Screw Piles","authors":"Songzhao Qu, Quan Zhang, Yonghua Guo","doi":"10.1007/s40999-023-00923-4","DOIUrl":"https://doi.org/10.1007/s40999-023-00923-4","url":null,"abstract":"Screw piles have a greater bearing capacity than straight piles due to their larger helix. However, an excessively large helix can cause bending and reduce the soil bearing capacity. This study investigates the failure pattern and mechanical performance of screw pile helices through full-scale load tests and numerical analyses. The results revealed that the helix buckled at its connection to the shaft. Additionally, the geological characteristics of the soil in which the pile was located had a negligible effect on the mechanical properties of the helix. Furthermore, the shape of the anchor plate (flat or helical) had a negligible effect on the load-bearing properties of the pile or the mechanical properties of the anchor plate itself. To simplify the analysis, the screw pile helix was assumed to be a flat circular plate. For a uniformly loaded flat circular plate with fixed inner edges, the result of Roark’s formula satisfactorily agreed with the measured maximum radial normal stress in the helix. Moreover, the value given by Roark’s formula for a flat circular plate with simply supported inner edges agreed well with the measured helix deformation.","PeriodicalId":50331,"journal":{"name":"International Journal of Civil Engineering","volume":"17 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138630141","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

Influence of Wall Openings on Nonlinear Lateral Load Response of Reinforced Concrete Frames with Masonry Infills: A Finite Element Study 开墙对带砌体填充的钢筋混凝土框架非线性侧载响应的影响：有限元研究

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-12-13 DOI: 10.1007/s40999-023-00922-5

Bonisha Borah, Sanil Naik, V. Abhishek, Hemant B. Kaushik, Vaibhav Singhal

{"title":"Influence of Wall Openings on Nonlinear Lateral Load Response of Reinforced Concrete Frames with Masonry Infills: A Finite Element Study","authors":"Bonisha Borah, Sanil Naik, V. Abhishek, Hemant B. Kaushik, Vaibhav Singhal","doi":"10.1007/s40999-023-00922-5","DOIUrl":"https://doi.org/10.1007/s40999-023-00922-5","url":null,"abstract":"In the present study, a simplified finite element micro-modeling technique was developed for the in-plane cyclic lateral load analysis of reinforced concrete frames with masonry infill walls having openings. Such frames are commonly constructed in several countries, and if not constructed properly, tend to get damaged during earthquakes thereby increasing the seismic risk in the region. Results of the numerical studies showed the effectiveness of using the simplified finite element micro-model in accurately predicting their lateral load responses. A finite element parametric study was undertaken to understand the influence of size and location of openings in masonry infill walls and aspect ratio of the reinforced concrete frames on lateral load response of infilled frames. Though the aspect ratio of the frame and size of the openings were found to have a significant effect on the lateral load characteristics of the frames, such as, lateral strength, lateral stiffness, and energy dissipation capacity, the influence of location of opening on these parameters was limited. It was also observed that the contribution of masonry infills reduced significantly when size of the opening in the wall was more than 20%. Further, the influence of horizontal eccentricity in the wall openings was found to be insignificant for most of the studied frames.","PeriodicalId":50331,"journal":{"name":"International Journal of Civil Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138629914","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

Exploration and Verification of Tunnel Stability Evolution Law Under Jointed Rock Mass with Various Attitudes 不同姿态节理岩体下隧道稳定性演变规律的探索与验证

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-12-11 DOI: 10.1007/s40999-023-00921-6

Jingyin Mao, Zhanping Song, S. Fan, Jiangsheng Xie, Yinhao Sun, Lianbaichao Liu

引用次数: 0

Seismic Performance of the Corroded Reinforced Recycled Aggregate Concrete Columns 腐蚀加固再生骨料混凝土柱的抗震性能

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-12-11 DOI: 10.1007/s40999-023-00924-3

Fei Wang, Jianwei Zhang, Di Zhao, Haoyu Wang

{"title":"Seismic Performance of the Corroded Reinforced Recycled Aggregate Concrete Columns","authors":"Fei Wang, Jianwei Zhang, Di Zhao, Haoyu Wang","doi":"10.1007/s40999-023-00924-3","DOIUrl":"https://doi.org/10.1007/s40999-023-00924-3","url":null,"abstract":"In order to investigate the impacts of corrosion damage on the seismic performance of recycled aggregate concrete (RAC) columns, the hysteretic behavior of the corroded RAC columns was studied through quasistatic tests and numerical analyses. The main parameters included different corrosion ratios, axial load ratios (ALR), and stirrup ratios. The results revealed that there were no significant differences in the carrying and deformation capacities of the corroded RAC column compared with the corroded NAC column. Under electrochemical chloride erosion conditions, the corrosion ratios of stirrups were on average 44.6% higher than those of longitudinal bars, and the crack widths of columns with different corrosion ratios varied little, ranging from 0.1 to 0.5 mm. Under a relatively low corrosion ratio (within 10%), the corrosion had a minor impact on the horizontal carrying capacity, but the deformation capacity of the corroded columns decreased with increasing corrosion ratio and ALR. The coupling effect of a high ALR and a high corrosion ratio could exacerbate the detrimental impact of corrosion, and special attention should be given to columns with an ALR exceeding 0.3 and a corrosion ratio exceeding 10%. In addition, the seismic performance of the corroded structure could be effectively simulated through the finite element model based on the modified corrosion model of the materials.","PeriodicalId":50331,"journal":{"name":"International Journal of Civil Engineering","volume":"252 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138569341","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

Kinematic Internal Forces of Free-Head Single Piles Subjected to Seismic Loading: Shaking Table Testing and Numerical Simulation 承受地震荷载的自由头单桩的运动内力：振动台测试和数值模拟

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-12-07 DOI: 10.1007/s40999-023-00915-4

Milad Aghamolaei, Alireza Saeedi Azizkandi, Ali Abolhasanpoor

{"title":"Kinematic Internal Forces of Free-Head Single Piles Subjected to Seismic Loading: Shaking Table Testing and Numerical Simulation","authors":"Milad Aghamolaei, Alireza Saeedi Azizkandi, Ali Abolhasanpoor","doi":"10.1007/s40999-023-00915-4","DOIUrl":"https://doi.org/10.1007/s40999-023-00915-4","url":null,"abstract":"Soil and pile interaction could significantly contribute to the response of the system and should be considered in the design prospect. To address some of the uncertainties, a series of 1 g shaking table tests followed by numerical simulations were conducted to address the seismic response of free-head single piles embedded in dry sand subjected to seismic waves of which horizontal acceleration and bending moments are the prime indexes. Subsequently, the validated numerical model was employed to perform parametric studies, focusing on normalized induced kinematic forces based on the soil profile type. The numerical results showed that not only does the soil profile type considerably affect the amplitudes of the maximum normalized seismic forces but also the distributions of these response parameters are highly dependent on soil type. The results also demonstrated that neglecting slippage and/or separation along the soil–pile interface leads to underestimation of the maximum normalized kinematic bending moment and shear force by up to 17.5% and 70%, respectively. Soil type also affects the induced forces by about 60% indicating that the design consequence of which could be dire. Therefore, it is concluded that the effects of slippage and/or separation can be considerable and hence, should be taken into consideration to prevent probable damages in seismic areas.","PeriodicalId":50331,"journal":{"name":"International Journal of Civil Engineering","volume":"6 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138555816","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

The 2023 Turkey–Syria Earthquake Sequence: Ground-Motion and Local Site-Effect Analyses for Kahramanmaras City 2023 年土耳其-叙利亚地震序列：卡赫拉曼马拉什市地动和局部场地效应分析

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-12-05 DOI: 10.1007/s40999-023-00917-2

Ali Lashgari, Mohammad Reza Soghrat, Yaser Jafarian, Hamid Zafarani

{"title":"The 2023 Turkey–Syria Earthquake Sequence: Ground-Motion and Local Site-Effect Analyses for Kahramanmaras City","authors":"Ali Lashgari, Mohammad Reza Soghrat, Yaser Jafarian, Hamid Zafarani","doi":"10.1007/s40999-023-00917-2","DOIUrl":"https://doi.org/10.1007/s40999-023-00917-2","url":null,"abstract":"This study investigates the ground-motion analysis and local site effects in Kahramanmaras city during the 6 Feb 2023 Turkey–Syria earthquake sequence. The damage distribution was non-uniform, concentrated in an area with 8–10-story buildings on alluvial soil. Comparison between the recorded data and several ground-motion models examined in this study indicates that ground-motion models predict the spectral accelerations around 3 times less than what observed during the first event. Site response analyses are carried out for three sequential earthquakes with magnitudes greater than 6.5 occurred on 6th of February 2023. Deconvolution analysis shows that the peak ground acceleration of bedrock motions correlates with distance: 0.1 g farthest, 0.3 g nearest, and ~ 0.2 g intermediary stations in Kahramanmaras city. The results of convolution analysis indicate that the ground surface spectral acceleration of the first event is the dominant spectra compared to the second and third events for periods less than 4 s. The results of site response analysis show that the 10-story buildings tolerated a spectral acceleration upto 0.85 g which is ~ 1.8 times greater than what is recommended by the available national design spectrum (i.e., the 2007 Turkey seismic design code). This means that the recorded motions in Kahramanmaras city have return periods larger than the 475 years of the Turkish seismic design code.","PeriodicalId":50331,"journal":{"name":"International Journal of Civil Engineering","volume":"43 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138548495","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

Mechanical Properties of Waste Laterite Scrap as Fine Aggregate in Concrete: A Review 混凝土中用作细骨料的废红土废料的力学性能：综述

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-11-30 DOI: 10.14445/23488352/ijce-v10i11p104

Sharanabasava Patil, Ramesh B, Saravanan A

引用次数: 0

Engineering the Future: Bio-Inspired Self-Healing Concrete Solutions 未来工程：受生物启发的自愈混凝土解决方案

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-11-30 DOI: 10.14445/23488352/ijce-v10i11p105

V. Sivakumar, Vickram A.S, Manikandan S

引用次数: 0

Traditional Building Facade Characteristics and its Transformations in South Tamilnadu, India 印度南泰米尔纳德邦传统建筑立面特征及其变革

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-11-30 DOI: 10.14445/23488352/ijce-v10i11p102

Mohanapriya R, K. Sasidhar

引用次数: 0

Impact of RSJ Prof. Dr. V.L. Ratumbuysang Psychiatric Hospital’s Construction in Collector Road Performance - A Traffic Management Analysis RSJ Prof. Dr. V.L. Ratumbuysang 精神病医院的建设对集散道路性能的影响 - 交通管理分析

IF 1.7 4区工程技术

International Journal of Civil Engineering Pub Date : 2023-11-30 DOI: 10.14445/23488352/ijce-v10i11p103

Sisca V. Pandey, J. S. Sumarauw, A. Dundu

{"title":"Impact of RSJ Prof. Dr. V.L. Ratumbuysang Psychiatric Hospital’s Construction in Collector Road Performance - A Traffic Management Analysis","authors":"Sisca V. Pandey, J. S. Sumarauw, A. Dundu","doi":"10.14445/23488352/ijce-v10i11p103","DOIUrl":"https://doi.org/10.14445/23488352/ijce-v10i11p103","url":null,"abstract":"- Land use development will affect the performance of roads. The development of new land use will cause movement generation and attraction (trip generation) during the operational period of further land use on the collector road. The development of new land uses to become activity centres will cause an increase in traffic generation and attraction. The construction of the psychiatric hospital, Prof. Dr. V.L. Ratumbuysang Manado, North Sulawesi Province, caused a rise in traffic movements. The traffic generation resulting from this infrastructure development is classified as moderate traffic generation, totalling 525 pcu/day. The performance of the Kalasey - Sea collector road section is in the existing condition of service level A and a speed of 30 km/hour. Increased traffic flow in the future will cause the service level of the Kalasey – Sea collector road to decrease to service level B. The research’s novelty lies in simulating the performance of road sections without construction and with development. The existence of development will reduce the level of road service.","PeriodicalId":50331,"journal":{"name":"International Journal of Civil Engineering","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139207621","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