A New Proposed Passive Mega-Sub Controlled Structure and Response Control

It is still a serious challenge for structural engineers to effectively reduce the seismic responses of tall and super tall buildings to further improve these structural safeties. In order to solve this problem, in this article a new kind of structural configuration, named passive mega-sub controlled structure (PMSCS), is presented, which is constructed by applying the structural control principle into structural configuration itself, to form a new structure with obvious response self-control ability, instead of employing the conventional method. In the analysis of PMSCS the equations of motion of the seismically excited system are developed, based on a realistic analytical model of the complete mega-structural system. Expressions of the displacement and acceleration response of the structure, resulting from simulated earthquake ground motions represented by stationary and nonstationary random processes, are derived. These responses are then determined for both the PMSCS and its conventional mega-sub structure (MSS) counterpart, whose configuration was modeled after the traditional mega-frame that was used in the construction of the Tokyo City Hall. A parametric study of the structural characteristics that influence the response control effectiveness of the PMSCS is presented and discussed. The region over which these structural characteristics yield the optimum seismic response control of the PMSCS is identified and serves as a very useful design tool for practitioners. The study illustrates that the proposed PMSCS offers an effective means of controlling the seismic displacement and acceleration response of tall/super-tall mega-systems. It also overcomes shortcomings exhibited in earlier proposed mega-sub controlled structural configurations.     

Dynamic Characteristic Analysis of Two Adjacent Multi-grid Composite Wall Structures with a Seismic Joint by a Bayesian Approach

Field ambient vibration tests and modal identification using a Bayesian approach are conducted for a building made of multi-grid composite wall structure and divided into two adjacent parts by a seismic joint, to investigate the dynamic characteristics of the special structural type and the effects of the infilled seismic joint. It is found that dynamic interactions between the two structural parts exist possibly induced by the infill of the building separation. Natural frequencies obtained from other two modal parameter identification methods and modal analysis results of finite element models considering dynamic interactions agree with those identified by the Bayesian approach.     

《商君书》新证

一 <垦令>云: 无宿治,则邪官不及为私利于民,而百官之情不相稽,则农有余日.     

对古城自然-文化生态环境空间结构特质的研究--以青海省同仁(国家级)历史文化名城保护规划为例

本文研究的目标是以整体的观念、环境的观念、综合及多视角的观念为理论基础,运用系统(层次)构成分析法对特殊自然环境与文化背景下同仁历史文化名城的自然—文化生态环境空间结构特质进行研究,为古城的保护规划奠定基础,通过保护规划使古城的自然—文化生态环境空间结构特质得以保护与传承。     

南朝法华经普门品变相——论刘宋元嘉二年铭石刻画像的内容

自东晋至南朝，观音信仰已普及民间，名称由光世音转变为观世音，刘宋元嘉二年铭石刻画像正值过渡期，其内容所示，南朝佛教不仅具有贵族佛教的性格，而且已存在于极为平民化的信仰基础之上。     

卜辞所见商代宗教哲学中的“命”

殷墟卜辞中有“帝于令”,“令”指“天命”。卜辞中又有“受命”,即文献中所说的“正命”,或“考终命”。卜辞中有“不既赢”,“赢”读为“盈”,指乾阳之气,如同文献中所说的“休命”。《甲骨文合集》6928是一版武丁时代的龟腹甲,上有“帝命”,反映了古代天人相应的观念。     

虢国墓地所出商代小臣系玉瑗

虢国墓地所出商代有铭玉器共３件,本文主要研究其中一件玉瑗上的铭文：“小臣系害”。“小臣系”是晚商的贵族,“害”字当读为“谒”,是“朝见”之义。玉瑗应是古代文献中的“贽”。     

安阳刘家庄商代墓葬所出朱书玉铭考

安阳博物馆于１９８５年５月～６月间在殷墟刘家庄发掘商代墓葬６２座,其中１０多座墓内的扰土中发现玉器,上有朱书文字①。例如： “赞”字写法可参照现藏于天津艺术博物馆的小臣玉铭②。“赞”,读为荐。《诗经·崧高》云：“王缵之事。”《潜夫论·志氏姓》引作“王荐之事     

绿色建筑概念下历史文化名城保护综合评价研究

本文以青海省同仁历史文化名城保护规划为例,从绿色建筑概念出发,结合我国国情和时代特点,利用AHP模型构建了"历史文化名城保护综合评价指标体系"。要求历史文化名城保护规划、设计遵循绿色建筑的设计方法,着眼于对地方技术及建筑历史的尊重、资源与能源的有效利用、防止环境污染,确保从建筑单体到城市整体环境逐步实现自然生态、社会生态、经济生态和历史文化生态的平衡、协调发展。使得管理部门、规划师、建筑师、业主等能够更加明确评价项目的依据以及可采用的改进措施等,也可实现从多个规划、设计方案中进行优选。     

试论南台子类型

一、绪言兴隆洼文化是中国社会科学院考古研究所1983年发掘敖汉旗兴隆洼遗址后提出来的,为中国北方地区较早阶段的新石器时