ISO2394:2015 Annex D (Reliability of Geotechnical Structures)     

K.K. Phoon  J.V. Retief 《Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards》2015,9(3):125-127

ISO2394:2015 contains a new informative Annex D on “Reliability of Geotechnical Structures”. The emphasis in Annex D is to identify and characterize critical elements of the geotechnical reliability-based design process, while respecting the diversity of geotechnical engineering practice. This paper highlights the main features of Annex D and gaps for future work.  相似文献   

Optimum design of stone column-improved soft soil using multiobjective optimization technique     

Kousik Deb  Anirban Dhar 《Computers and Geotechnics》2011

A combined simulation–optimization-based methodology is proposed to identify the optimal design parameters for granular bed–stone column-improved soft soil. The methodology combines a finite difference-based simulation model and an evolutionary multiobjective optimization model. A combined simulation–optimization methodology is developed for two different formulations: (a) the minimization of maximum settlement and the minimization of differential settlement subject to stress constraints; (b) the minimization of maximum settlement, the minimization of differential settlement and the maximization of the degree of consolidation subject to stress constraints. The developed methodology is applied to an illustrative system. Different scenarios are evaluated to examine critical field conditions. The solution results show that the modular ratio and the ultimate stress carrying capacity of the stone column are the most important parameters for optimal design. The obtained results also show the potential applicability of the developed methodology.  相似文献   

黑河流域中游水资源管理决策支持系统设计与实现   总被引：7，自引：5，他引：2  

盖迎春  李新 《冰川冻土》2011,33(1):190-196

针对黑河流域水资源管理面临的实际问题以及各决策部门之间的关系,以决策支持系统三库结构为基础,构建了黑河流域中游水资源管理决策支持系统(HD).系统采用了客户端/服务器(C/S)和浏览器/服务器(B/S)两种架构,并根据黑河流域中游水务管理决策部门之间的行政级别,设计了系统功能访问权限控制机制和数据审核机制.基于C/S结...  相似文献   

杭州黄龙饭店支腿式地下连续墙施工技术探讨          下载免费PDF全文

唐俊杰 《探矿工程》2011,38(10):46-49,45

支腿式地下连续墙在杭州地区工程中首次运用。结合实际工程实践,就支腿式地下连续墙的技术要点进行介绍,通过跟踪分析实际施工过程,简单介绍整个工艺流程和确保支腿式地下连续墙的施工质量、保证地下室开挖深度及基坑安全性、稳定性的技术措施。展望支腿式地下连续墙推广应用前景。  相似文献   

玉林新一代天气雷达综合防雷设计     

丁立兵 《气象研究与应用》2011,32(4):90-93

通过对玉林新一代天气雷达情况的分析,根据综合防雷设计的要求提出了玉林新一代天气雷达的具体防雷设计方法,重点突出直击雷防护及电子设备线路的防护措施,从而提高雷达站防御雷击侵害的能力,确保雷达站安全、可靠运行。  相似文献   

钢质大型浮顶油罐防雷设计与施工工艺研究     

丁立兵  康强 《气象研究与应用》2011,32(1):84-87

通过对钢质浮顶油罐雷电防护技术和施工工艺的研究,分析了钢质大型浮顶油罐的防雷技术措施;针对相关国家规范只有条文规定而无相应施工图集的问题,给出了相应的防雷施工工艺图,以供油库防雷设计和施工管理人员参考.  相似文献   

田东35KV输电线路防雷设计分析     

黄伟圣  陈瑜琨 《气象研究与应用》2011,32(1):90-93,105

对广西田东县35KV输电线路进行防雷措施进行设计时,综合考虑当地气候、地形、环境等多种因素,并进行雷击风险评估工作,给出了最佳的防雷保护方案,从而有效地降低输电线路雷击跳闸率,减少雷电对电网安全运行的影响.  相似文献   

Comparing gravity and gravity gradient surveys     

Gary J. Barnes  John M. Lumley  Phill I. Houghton  Richard J. Gleave 《Geophysical Prospecting》2011,59(1):176-187

Noise levels in marine and airborne full tensor gravity gradiometer surveys together with conventional land, marine and airborne gravity surveys are estimated and analysed in gridded form, resulting in relations that detail how these different survey systems can be compared analytically. After defining survey parameters including line spacing, speed and instrument bandwidth, the relations estimate the noise levels that result on either grids of gravity (gz) or gravity gradient (Gzz) as a function of the spatial filtering often applied during geological interpretation. Such comparisons are believed to be a useful preliminary guide for survey selection and planning.  相似文献   

Tall building vibration control using a TM‐MR damper assembly: Experimental results and implementation     

Rene Zemp  Juan C. de la Llera  Paul Roschke 《地震工程与结构动力学》2011,40(3):257-271

This paper summarizes the relevant results of the design, construction, testing, and implementation of a nominal 120 kN magnetorheological damper developed to control a free‐plan tall building in Santiago, Chile, equipped with two 160‐ton tuned masses. Cyclic as well as hybrid simulation tests were performed on the prototype damper. Global building responses using measured MR properties showed good correlation with analytical estimations. Also, a proposed physical controller for the MR damper was validated through hybrid and building pull‐back tests. Its performance is essentially equivalent to that of an LQR controller, but the information needed in its implementation is considerably less. Pull‐back tests of 10 cm amplitude were performed on one mass along the flexible edge of the building and its response controlled using the passive and controlled modes of the MR damper. The MR damper was capable of controlling the TM displacements very effectively, as well as the simulated building response for different ground motions and harmonic excitation. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献   

Discussion of paper ‘Revisiting Eurocode 8 formulae for periods of vibration and their employment in linear seismic analysis’ by Helen Crowley and Rui Pinho,Earthquake Engineering and Structural Dynamics 2010; 39(2):223–235     

S. Bahadir Yuksel 《地震工程与结构动力学》2011,40(11):1297-1298

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