Discussion on uncertainties，attenuation of ground motion and aseismic design criterion

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关于抗震设计规范与地震动区划图的有关探讨

本文总结了国内外桥梁抗震设计规范和建筑结构抗震设计规范的设计思想和设计方法,介绍了我国和美国地震动参数区划图的发展和现状,对比分析了抗震规范使用地震区划图的情况。针对我国抗震设计规范和地震动参数区划图的现状,提出了两条建议：（1）地震动参数区划图编制部门应直接提供多水准的地震动参数区划图;（2）抗震设计规范应彻底抛弃设防烈度概念,以地震重现期取代原地震危险程度标示方法。     

British National Report to the International Cartographic Association for the Period 2011-2015

In recent years, the concepts of usability, user experience, and user-centricity have gained in interest. Digital applications, developed in line with criteria related to these approaches, ask for a deeper understanding of users and their requirements. But, even though there is a wide range of methods available, the creation of user-centric applications with good usability and user experience still poses great challenges for developers. This is also true for web maps, i.e. web map applications, which today are ubiquitous on the Internet. They have evolved into an important information and communication tool and address users who do not possess any specific knowledge of Geoinformatics (GI) or Cartography. Despite the efforts made to meet the requirements and preferences of laymen, these users still often face problems when dealing with web map applications. This refers to aspects of design, content, and functionality. Here, participatory design, which is well-known in the field of Software and Web Engineering, might provide a suitable means. By engaging users directly and actively in the application development process, developers are able to gain a profound understanding of the users and their needs. However, there are several open questions regarding the use of participatory design for designing and implementing web map applications: What does the use of participatory design in web map development processes look like in detail? How and to what degree can users be involved in the development processes? Which added values exist? These questions are addressed by the project YouthMap 5020, whose main goal it was to create a prototype youth-centric web map for the Austrian city of Salzburg (zip code 5020). Applying the approach of participatory design, about 120 teenage pupils from several local schools were involved in all kinds of tasks related to the phases of generating the youth-centric Salzburg web city map. Experience and knowledge gained thereby allowed elaborating recommendations generally useful for generating youth-centric web map applications.     

绳索取心技术在覆盖地层钻井中的应用

为提高吉林白城地区的吉洮地1井、吉白地1井两口油气地质调查井钻探生产效率,在覆盖地层钻井中应用绳索取心技术。基于所钻地层岩性特征,结合提钻取心与绳索取心工艺特点,通过设计钻头、钻井冲洗液,改进钻进规程参数与钻具水口流经通道,在覆盖地层（厚约1 100 m）钻井中成功应用绳索取心钻进方法。相比传统单管/双管提钻取心方法,钻进效率与岩心采取率提高两倍以上,提大钻周期提升至2 d以上,大大降低了劳动强度,节约工期近30 d。详细介绍了白城地区覆盖地层钻井中应用绳索取心技术的改进方法与施工经验,对今后在覆盖地层钻井中推广应用绳索取心技术具有一定借鉴意义。     

使用多源数据的不动产登记基础平台

针对不动产统一登记平台建设问题,该文以江西省,不动产登记平台建设为例从多源不动产登记信息数据的整合、不动产统一登记平台设计与实现两个方面开展。对土地、房产、草原、林地、海域等多行业的数据进行整理、整合,形成统一的不动产登记数据库。平台总体框架由基础保障系统、不动产历史数据库、共享服务平台、数据管理平台、政务基础平台、登记信息管理平台、登记信息公示平台7部分组成。     

Determination of column size for displacement‐based design of reinforced concrete frame buildings

This article reports a method to determine the storey‐wise column size for displacement‐based design of reinforced concrete frame buildings with a wide range of storey drift and building plan. The method uses a computer program based algorithm. The basic relation used in the algorithm is formulated by considering the various possible deformation components involved in the overall frame deformation. As a necessity to represent the deformation component due to plastic rotation of beam members, a relation between the beam plastic rotation and the target‐drift is adopted. To control the dynamic amplification of interstorey drift, a target‐drift dependant design‐drift reduction factor is used. The dynamic amplification of column moment is accounted with the help of an approximate conversion of fundamental period of the building from the effective period of the equivalent SDOF system. To avoid the formation of plastic hinge in column members, a design‐drift dependant column–beam moment capacity ratio is used. The method successfully determines the storey‐wise column size for buildings of four plans of different varieties, heights up to 12 storeys and target‐drift up to 3%. Copyright © 2013 John Wiley & Sons, Ltd.     

A Preliminary study on the seismic conceptual design

The seismic conceptual design is an essential part of seismic design codes. It points out that the term "seismic conceptual design" should imply three aspects,i.e.,the given concept itself,the specific provisions related to the given concept and the designing following the provisions. Seismic conceptual design can be classified into two categories: the strict or traditional seismic conceptual design and the generalized seismic conceptual design. The authors are trying to define for both conceptual designs their connotations and study their characteristics,in particular,the differences between them. Authors emphasize that both conceptual designs sound very close,however,their differences are apparent. The strict conceptual designs are usually worked out directly from engineering practice and/or lessons learnt from earthquake damage,while the generalized conceptual designs are resulted in a series of visions aiming to realize the general objectives of the seismic codes. The strict conceptual designs,(traditional conceptual designs) are indispensable elements of seismic codes in assuring designed structures safer and the generalized conceptual designs are playing key roles in directing to a more advanced and effective seismic codes.     

参数化建模技术应用研究——以城市设计为例

城市设计是控规中不可或缺的引导性内容.随着理论与编制方法的不断创新,城市设计已发展到了以形态整体性理论重构为目标的第四代范型,而三维形态不仅是城市设计的表现形式,也是揭示和把握城市演变进程特征和规律的重要手段,能够有效弥补和提高控制性详细规划指标在三维空间上的乏力和不足.本文以两个实验区为基础,尝试将控规指标作为参数导...     

抗震设计谱的发展及相关问题综述

抗震设计谱是地震荷载的表征和工程抗震设计的基础。首先对国内外抗震设计反应谱的发展、演变进行了阐述，指出现今反应谱理论以及在此基础上建立的抗震设计谱所取得的进展；总结了被广泛使用的各种抗震设计谱所存在的问题，指出了解决问题的可能途径，简要介绍了双规准反应谱的概念和统一设计谱的思想；探讨了抗震设计谱的发展趋势以及所涉及的新课题。     

Response spectra for nuclear structures on rock sites considering the near-fault directivity effect

Near-fault ground motions, potentially with large amplitude and typical velocity pulses, may significantly impact the performance of a wide range of structures. The current study is aimed at evaluating the safety implications of the near-fault effect on nuclear power plant facilities designed according to the Chinese code. To this end, a set of nearfault ground motions at rock sites with typical forward-directivity effect is examined with special emphasis on several key parameters and response spectra. Spectral comparison of the selected records with the Chinese and other code design spectra was conducted. The bi-normalized response spectra in terms of different corner periods are utilized to derive nuclear design spectra. It is concluded that nuclear design spectra on rock sites derived from typical rupture directivity records are significantly influenced both by the earthquake magnitude and the rupture distance. The nuclear design spectra specified in the code needs to be adjusted to reflect the near-fault directivity effect of large earthquakes.