维普中文期刊产品整合服务
333篇 您的检索式:关键字=FOUNDATION
    题名 作者 年代 出处 被引量
1基于Revit的BIM技术结构设计中的数据交换问题分析显示文摘BIM技术在结构设计中应用的难点在于结构分析软件与BIM建模d软件之间的数据转换。本文主要从IFC标准、Revit API以及基于Excel的数据交换等方面进行了数据交换测试,并对测试结果进行了理论分析,测试结果为:IFC标准仅适合结构物理模型的数据交换,后续的结构分析设计或实体配筋难以进行;基于Revit API二次开发的接口在进行结构分析设计上的数据交换上是可行的,但是存在诸如接口不稳定等问题;基于Excel的转换依赖于软件是否支持Excel数据文件的导入导出,但转换过程稳定。实际运用上,应当针对结构体系和模型复杂程度的不同,采用不同的转换策略。杨党辉 苏原 孙明 2014土木建筑工程信息技术2014,6,3:33
2Development of Finite Element Limiting Analysis Method and Its Applications in Geotechnical Engineering显示文摘The Finite Element Limiting Analysis Method(LELAM) has the advantage of combining a numerical analysis method with traditional limiting equilibrium methods.It is particularly applicable to the analysis and design of geotechnical engineering.In the early 20th century,FELAM has been developed vigorously in domestic geotechnical engineering over international common finite element procedures.It has made great achievements in basic theory research and computational precision,thus broadening the application fields in practical projects.In order to gradually make innovations in geotechnical design methods,some of our research results are presented,mainly including geotechnical safety factor definitions,the principles for use of the method concerned,the overall failure criterion,the deduction and selection of the yield criterion,and the measurement to improve the computational precision,etc..The application field has been broadened from two-dimensional to three-dimensional,from soil slope to jointed rock slope and foundation,from stable seepage to non-stable seepage,from slope and foundation to tunnel.This method has also been used in search of many hidden sliding surfaces of complex landslides,conducting the structural support design considering the interaction between the soil and the structure,and computing simulation foundation bearing plates load tests,etc..Zheng Yingren1,Deng Chujian1,Zhao Shangyi1,Tang Xiangsong1,Liu Mingwei1,Zhang Liming2(1 Department of Civil Engineering,Logistical Engineering University,Chongqing 400041,China 2 Department of Science and Information Engineering,Qingdao Technological University,Qingdao 266033,China) 2007工程科学(英文版)2007,5,3:27
3Estimation of Undrained Bearing Capacity for Offshore Soft Foundations with Cyclic Load显示文摘The degradation strength of soils under cyclic loading is studied and a method for deter-mining the cyclic degradation strength with cyclic triaxial tests is given in the paper.Furthermore,a dum-my static method for estimating the undrained bearing capacity for offshore soft foundation under waveloads is developed.It can consider the effect of the difference of cyclic stress for different parts of the foun-dation on both the degradation strength of the foundation soil and the bearing capacity so that the esti-mated result can better reflect the real condition of foundation under cyclic loading.The method can be ap-plied to plane and space problem.Wang, JH Liu, YF Xing, Y Di, HM 1998China Ocean Engineering1998,13,2:18
4Reliability-Based Design for Jacket Platform Under Extreme Loads显示文摘In this paper, reliability analysis for the offshore jacket platform with the interaction of structure- pile- soil under extreme environmental loads is carried out. The inherent uncertainties of the environmental load, foundation soil, platform itself, and calculating models are evaluated. The action of extreme loads on the offshore platform is modeled as a function of extreme wave height. The system capacity of the whole platform is determined by nonlinear pushover analysis, and the relevant probability property is obtained by the simulation method. The reliability model for the whole jacket platform is described as the relationship between the load and resistance based on the offshore design codes. The reliability of whole platform is calculated by the analytical method and the importance sampling method on the basis of a case study for a tripod jacket platform.Jin Weiliang Associate Professor, Dr. -Eng., Zhejiang University, Hangzhou 310027 1996China Ocean Engineering1996,11,2:17
5One-Step-Installation of Offshore Wind Turbine on Large-Scale Bucket-Top-Bearing Bucket Foundation显示文摘In 2010,the first offshore wind turbine with integrated installation was established in Qidong sea area of Jiangsu Province,China,which led to the implementation phase of one-step-installation technique based on the design and construction of large-scale bucket-top-bearing (LSBTB) bucket foundation.The critical technique of LSBTB bucket foundation included self-floating towing,penetration with adjustment of horizontal levelness,removability and one-step-installation.The process of one-step-installation included the prefabrication of LSBTB bucket foundation in onshore construction base,installation and debugging of wind power,overall water transportation of foundation and wind power system,and installation of foundation and offshore wind turbine on the appointed sea area.The cost of one-step-installation technique was about 5 000 Yuan/kW,which was 30%-50% lower than that of the existing technique.The prefabrication of LSBTB bucket foundation took about two months.During the one-step-installation process,the installation and debugging of wind power and overall water transportation need about one to two days in sea area within 35 m depth.After the proposed technique is industrialized,the cost will be further reduced,and the installation capacity is expected to be up to 500 wind turbines per year.丁红岩 练继建 李爱东 张浦阳 2013Transactions of Tianjin University2013,19,3:16
6Underwater Explosion Treatment of Marine Soft Foundation显示文摘The consolidation of soft foundation is a problem that commonly appears in harbor construction engineering on muddy coast. Introduced in this paper is the experimental study on underwater explosion treatment of soft foundation, including the regulations of explosion hollow development and medium movement, the law of similarity of densification and settlement of filled stone mass by shock wave pressure and explosion energy and their construction technologies, etc. A number of projects have been completed by applying this new technique, and the technique itself has been proved practicable.Zheng, Zhemin Yang, Zhengsheng Jin, Liu 1991China Ocean Engineering1991,6,2:16
7基于IFC的BIM子模型视图半自动生成显示文摘为支持面向建筑全生命期(BLC)的建筑信息模型BIM(building information modeling)创建和应用,实现根据各专业任务的信息需求快速提取所需子信息模型,该文提出一种基于IFC(industry foundation classes)标准的BIM子模型视图(model view definition,MVD)半自动生成方法。通过分析IFC标准的实体定义和分类,构建IFC元数据模型,提炼完备MVD需满足的规则,建立MVD半自动生成流程,并开发相应软件工具,实现了根据应用及交换的信息需求快速生成MVD,支持从整体BIM模型中提取所需子信息模型。最后,通过实例验证了MVD半自动生成方法的可行性和正确性。应用表明:本研究提出的MVD半自动生成方法可便捷、准确地描述各个任务的信息创建和应用需求,为面向建筑全生命期的BIM创建和应用提供技术支持。余芳强 张建平 刘强 2014清华大学学报(自然科学版)2014,54,8:14
8Dynamics of vehicle-pavement coupled system based on a revised flexible roller contact tire model显示文摘A revised flexible roller contact tire model (RFRC tire model) is proposed, which considers not only the geometric and flexible filtering effect, but also tire damping and pavement displacement. A vehi- cle-pavement coupled system is modeled as a two DOF oscillator moving along a simply supported beam on a linear viscoelastic foundation. By using the Galerkin’s and Direct Integral method, dynamical responses of the vehicle-pavement coupled system are obtained based on the RFRC tire model and the traditional single point contact tire model (SPC tire model). The simulation results are compared with test data and the validity of the proposed RFRC tire model is verified. Differences between the two models are also investigated. It is found that the dynamical behaviors for both models agree with each other quite well when road surface roughness is a long harmonic wave. On the other hand, they are different under short harmonic wave or impulse road excitation. Thus the RFRC tire model should be used to compute the tire force and investigate dynamical responses of vehicle and pavement.YANG ShaoPu LI ShaoHua LU YongJie 2009Science China(Technological Sciences)2009,52,3:13
9Construction Process Simulation and Safety Analysis Based on Building Information Model and 4D Technology显示文摘Time-dependent structure analysis theory has been proved to be more accurate and reliable compared to commonly used methods during construction. However, so far applications are limited to partial period and part of the structure because of immeasurable artificial intervention. Based on the building informa-tion model (BIM) and four-dimensional (4D) technology, this paper proposes an improves structure analysis method, which can generate structural geometry, resistance model, and loading conditions automatically by a close interlink of the schedule information, architectural model, and material properties. The method was applied to a safety analysis during a continuous and dynamic simulation of the entire construction process. The results show that the organic combination of the BIM, 4D technology, construction simulation, and safety analysis of time-dependent structures is feasible and practical. This research also lays a foundation for further researches on building lifecycle management by combining architectural design, structure analysis, and construction management.胡振中 张建平 邓资银 2008Tsinghua Science and Technology2008,13,S1:12
10Calculation of foundation pit deformation caused by deep excavation considering influence of loading and unloading显示文摘A new analytical solution for ground surface settlement induced by deep excavation is proposed based on the elastic half space Melan’s solution,and the analytical model is related to the physical and mechanical properties of soil with the loading and unloading action during excavation process.The change law of earth pressure of the normal consolidation soil after the foundation pit excavation was analyzed,and elastic displacement calculation methods of analytic solution were further established given the influence of excavation and unloading.According to the change of stress state in the excavation process of foundation pit,the planar mechanical analysis model of the foundation excavation problem was established.By combining this model with the physical equations and geometric equations of plane strain problem with consideration of the loading and unloading modulus of soil,constitutive equation of the plane strain problem was also established.The loading and unloading modulus formula was obtained by using the parameter calculation method in Duncan-Chang curve model.The constitutive equation obtained from the model was used to calculate the soil stress state of each point to determine its loading and unloading modulus.Finally,the foundation pit displacement change after excavation was calculated,and thus the soil pressure distribution after retaining structure deformation.The theoretical results calculated by making corresponding programs were applied to engineering practice.By comparing the conventional calculation results with monitoring results,the practicability and feasibility of the calculation model were verified,which should provide a theoretical basis for similar projects.黄明 刘新荣 张乃烊 沈启炜 2017Journal of Central South University2017,24,9:9
11Multifield coupling model and its applications for pile foundation in permafrost显示文摘Importing the interface element which links the frozen soil base with concrete piles and considering the couplings of stress field, temperature field and moisture field, this paper es- tablishes the nonlinear visco-elastic plastic finite element model of pile-soil. For a practical bridge structure the stress field and displacement field of single pile in freezing process are calculated. This paper emphatically studies the process of the tangential frost heave stress field, freezing stress field and displacement field varying with time, and ulteriorly studies time variation process of single pile carrying capacity in freezing process.WU Yaping1,2, ZHU Yuanlin2, GUO Chunxiang1, SU Qiang1 & MA Wei2 1. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China 2. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 2005Science China Earth Sciences2005,48,7:7
12基于MFC的STL格式数据文件接口问题研讨显示文摘在开发与快速成形相关的软件时,对STL格式的数据文件的读取是必不可少的。对STL文件的两种格式(二进制格式和ASCII码格式)作详细分析,并给出用MFC对这两种格式数据读取的具体算法。董得义 谢川 李彦生 郭宇 2005现代制造工程2005,,5:6
13基于Struts框架的Java Web应用开发技术显示文摘Struts是Apache Software Foundation提供的一个面向Java Web应用的通用开发框架。详细分析了Struts框架的基于MVC设计模式的总体构造、核心组件及其框架特色,并且以实际开发系统为例,具体说明基于Struts框架的开发技术。刘磊 朱敏 徐彦军 2007计算机应用与软件2007,24,5:6
14Optimization design of foundation excavation for Xiluodu super-high arch dam in China显示文摘With better understanding of the quality and physico-mechanical properties of rocks of dam foundation,and the physico-mechanical properties and structure design of arch dam in association with the foundation excavation of Xiluodu arch dam,the excavation optimization design was proposed for the foundation surface on the basis of feasibility study.Common analysis and numerical analysis results demonstrated the feasibility of using the weakly weathered rocks III1and III2as the foundation surface of super-high arch dam.In view of changes in the geological conditions at the dam foundation along the riverbed direction,the design of extending foundation surface excavation area and using consolidating grouting and optimizing structure of dam bottom was introduced,allowing for harmonization of the arch dam and foundation.Three-dimensional(3D)geomechanics model test and fi nite element analysis results indicated that the dam body and foundation have good overload stability and high bearing capacity.The monitoring data showed that the behaviors of dam and foundation correspond with the designed patterns in the construction period and the initial operation period.Qixiang Fan Shaowu Zhou Ning Yang 2015Journal of Rock Mechanics and Geotechnical Engineering2015,7,2:6
15Rock mechanics contributions to recent hydroelectric developments in China显示文摘Rock mechanics plays a critical role in the design and construction of hydroelectric projects including large caverns under high in situ stress,deep tunnels with overburden more than 2500 m,and excavated rock slopes of 700 m in height.For this,this paper conducts a review on the rock mechanics contributions to recent hydroelectric developments in China.It includes the development of new testing facilities,mechanical models,recognition methods for mechanical parameters of rock masses,design flowchart and modeling approaches,cracking-restraint method,governing flowchart of rock engineering risk factors enabling the development of risk-reduced design and risk-reduced construction,and initial and dynamic design methods.As an example,the optimal design of underground powerhouses at the Baihetan hydroelectric plant,China,is given.This includes determination of in situ stresses,prediction of deformation and failure depth of surrounding rock masses,development of the optimal excavation scheme and support design.In situ monitoring results of the displacements and excavation damaged zones(EDZs)have verified the rationality of the design methodology.Xia-Ting Feng Yang-Yi Zhou Quan Jiang 2019Journal of Rock Mechanics and Geotechnical Engineering2019,11,3:6
16基坑工程支护方案设计及施工技术的探讨显示文摘基坑工程是一个综合性很强的系统工程,其支护方案的优劣直接影响工程进度、质量和成本,在整个基坑施工工程中占有重要的地位。本文结合实际工程特点,严格遵循安全可行、经济合理、施工便捷、环境保护等原则进行方案设计,提出施工技术措施,对同类基坑支护工程具有一定的参考和借鉴作用。刘向明 2010中州大学学报2010,27,3:6
17Failure Envelopes of Wide-Shallow Composite Bucket Foundation for Offshore Wind Turbines in Silty Sand显示文摘The wide-shallow composite bucket foundation(WSCBF) is a new type of offshore wind power foundation that can be built on land and rapidly installed offshore, there by effectively reducing the construction time and costs of offshore wind power foundation. In this study, the horizontal bearing capacity is calculated by finite element simulation and compared with test results to verify the validity of results. In this process, the vertical load and bending load are respectively calculated by the finite element simulation. Under the vertical load effect, the bucket foundation and the soil inside are regarded as a whole, and the corresponding buckling failure mode is obtained. The ultimate vertical bearing capacity is calculated using empirical and theoretical formulas; the theoretical formula is also revised by finite element results. Under bending load, the rotational center of the composite bucket foundation(in a region close to the bucket bottom) gradually moves from the left of the central axis(reverse to loading direction) to the nearby compartment boards along the loading direction. The H–M envelope line shows a linear relationship, and it is determined that the vertical and bending ultimate bearing capacities can be improved by an appropriate vertical load.Yonggang Liu Yaohua Guo Hongyan Ding Puyang Zhang 2018Transactions of Tianjin University2018,24,2:5
18Transverse free vibration analysis of a tapered Timoshenko beam on visco-Pasternak foundations using the interpolating matrix method显示文摘The characteristics of transverse free vibration of a tapered Timoshenko beam under an axially conservative compression resting on visco-Pasternak foundations are investigated by the interpolating matrix method. The research is executed in view of a three-parameter foundation which includes the eff ects of the Winkler coeffi cient, Pasternak coeffi cient and damping coeffi cient of the elastic medium. The governing equations of free vibration of a non-prismatic Timoshenko beam under an axially conservative force resting on visco-Pasternak foundations are transformed into ordinary diff erential equations with variable coeffi cients in light of the bending rotation angle and transverse displacement. All the natural frequencies orders together with the corresponding mode shapes of the beam are calculated at the same time, and a good convergence and accuracy of the proposed method is verifi ed through two numerical examples. The infl uences of foundation mechanical characteristics together with rotary inertia and shear deformation on natural frequencies of the beam with diff erent taper ratios are analyzed. A comprehensive parametric numerical study is carried out emphasizing the primary parameters that describe the dynamic property of the beam.Zhang Jinlun Ge Renyu Zhang Liaojun 2019Earthquake Engineering and Engineering Vibration2019,18,3:5
19关于建设速度与混凝土结构寿命的思考显示文摘本文是作者读过美国P.Kumar.Mehta和Wilbert S.Langley的《Monolith Foundation:'Built to Last a 1000 Years'》(建造一座维持1000年的大体积基础)一文有感而发。他在介绍大掺量粉煤灰在一个含有海水成分的地下混凝土基础工程中应用理念和技术的同时,联系当今可持续发展的迫切要求,提出自己的建议。胡建军 2012混凝土世界2012,,3:4
20Uncertainty quantification of stability and damage detection parameters of coupled hydrodynamic-ground motion in concrete gravity dams显示文摘In this paper, models of the global system of the Koyna dam have been created using ABAQUS software considering the dam-reservoir-fbundation interaction. Non coupled models and the coupled models were compared regarding the horizontal displacement of the dam crest and the differential settlement of the dam base in clay foundation. Meta models were constructed and uncertainty quantification process was adopted by the support of Sobol's sensitivity in dices considering five un certain parameters by exploiting Box-Behnken experimental method. The non coupled models results determined overestimated predicted stability and damage detection in the dam. The rational effects of the reservoir height were very sensitive in the variation of the horizontal displacement of the dam crest with a small interaction effect with the beta viscous damping coefficient of the clay fbundation. The modulus of elasticity of the clay foundation was the decisive parameter regarding the variation of the differential settlement of the dam base. The XFEM approach has been used for damage detection in relation with both minimum and maximum values of each uncertain parameter. Finally the effects of clay and rock foundations were determined regarding the resistance against the propagation of cracks in the dam, where the rock fbundation was the best.Nazim Abdul NARIMAN Tom LAHMER Pevman KARAMPOUR 2019Frontiers of Structural and Civil Engineering2019,13,2:4
返回顶部 每页显示:
共17页 首页 上一页 第1页 下一页 末页 /17 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费