Simulation analyses of buildings damaged in the 1995 Kobe,Japan, earthquake considering soil–structure interaction

A series of studies was conducted on three buildings of steel reinforced concrete structures with RC shear walls damaged in the 1995 Hyogo-ken Nanbu earthquake. These buildings are located in an area where structural damage centred around. Two of these buildings suffered severe damage, while the third was not structurally damaged. Our studies deal with site inspections, including micro-tremor measurement of buildings, the evaluation of input motions, and the response analyses considering soil–structure interaction. The results of simulation analyses of the two severely damaged buildings correspond to their actual damage state. From the response analyses of the one slender building with no structural damage, it was concluded that uplifting is the main reason it did not suffer any structural damage. Through these studies, the importance of soil–structure interaction and effective input motion is fully understood. Copyright © 1999 John Wiley & Sons, Ltd.     

云南银(铅)-锌矿开发史料与找矿探讨

云南是银铅锌矿开发较早的省份之一，史料丰富。本文从史料的角度，阐述了与云南古代有关银（铅）－锌矿的开发概况，基本特点以及如何保护，继承这份丰富的历史遗产，进而对目前有关史料的研究和古代采矿遗址清理情况进行分析，提出今后找矿的一些想法。     

RELAXING ASSUMPTIONS OF PERFECT INFORMATION IN PARK VISITATION MODELS*

Variables related to urban park awareness are identified and methods for relaxing assumptions of perfect information in park use models are discussed. Park awareness is related to park characteristics (age and degree of development of the park), population characteristics (race, age, length of residence, recreation participation), and distance. Park attributes are stronger predictors of both park awareness and use than is distance. These findings parallel similar research on the cognitive aspects of shopping decisions.     

Discovering the ancient lakelet of the archeological site of pasargadae in Iran using a multi-layer technique

Pasargadae complex had been the main center of Persian history during the Achaemenian period (560–330 bc), registered as one of the world heritage sites by UNESCO in 2004. This research is an attempt to recognize the natural setting and landscape of Pasargadae during the Achaemenian period, in Iran. The method is based on the application of a multi-layer technique. Collected data by fieldwork, especially in geology, hydrology, and hydrogeology, along with the analysis of aerial data and satellite information provided the baseline information for preparing historic and environmental layers and have made it possible to recognize a natural lakelet in the this area. The results show that the geometry of lakelet together with the ancient river of Pasargadae had been the main elements that formed the character of the site; they were also important in the locations of buildings in the Pasargadae complex.     

底部浮泥表层推移速度分布的ADCP—GPS估测方法

ADCP对底跟踪走航观测的流速数据中包含水体底部浮泥、底沙运动信息,对比GPS定位方法算出的水体流速数据可以分离出浮泥相对于GPS定位的运动信号,从而达到对底质推移观测的目的。     

城市犯罪时空特征与机制——以北京城八区财产类犯罪为例

城市犯罪的时空模式是地理学“格局”和“过程”研究的重要课题.本文以北京城八区财产类犯罪为研究对象,利用GIS工具获取和处理空间数据,探讨城市犯罪的时空格局和时空模式,并建立时空机制模型.研究发现:北京城市犯罪总体上呈现多中心分布格局,在商业繁华地带和对外交通运输区存在明显的高强度带;各种犯罪类型空间格局既有共同性又有差异性;城市犯罪嫌疑人数量存在季节分异特点,但同一区域的犯罪地点数目具有一定的稳定性;就时空机制而言,场所的时空特征作用于财产犯罪参与者,进而作用于犯罪要素并影响犯罪实施成功与否,而不同类型的财产犯罪对场所时空特征要求不同,这些要求一旦与北京城市环境的特有属性耦合,便产生犯罪高发地段和高发时段,最终影响城市空间结构特点.     

场地类别分类方案研究

基于性能的抗震设计,要求工程师设计出具有预期抗震性能的结构,一个关键因素是地震作用的确定,这在很大程度上取决于局部场地条件。通过收集和分析北京、苏州和唐山城区956个钻孔资料,建立地表20 m和30 m深土层走时平均剪切波速VS20和VS30的关系式;现场钻探获取北京城区深105 m的典型钻孔原状土样,试验给出各类土体动剪切模量和阻尼比曲线;建立北京城区170个钻孔的场地反应计算模型,采用Nakamura提出的HVSR法和陈国兴等提出的弱震法估算场地基本周期TS值,结合国内外现行抗震规范的场地分类及一些学者对场地分类的研究成果,提出两种新的场地分类建议方案：基于等效剪切波速VSE和覆盖土层厚度H（地表至剪切波速VS ≥ 500 m/s的基岩深度）的双指标场地分类方案及基于VSE、H和TS的三指标场地分类方案。提出的场地分类方案对我国现行抗震规范场地分类方法的改进有参考价值。     

华北地区跨断层流动形变监测场地优化初探

首先分析了华北地区跨断层流动形变监测场地布测现状及监测效能,继而依据跨断层流动形变测量规范及监测的可控性、均匀性、目的性以及监测场地监测效能等,结合该区域断裂活动及地震活动性研究结果,给出华北地区跨断层流动形变监测场地拟优化布设结果。该优化布设结果消除了华北地区跨断层流动形变网监测地震活动盲区,有助于提高该区跨断层流动形变网监测地震活动能力。     

关于地震现场声像拍摄工作的探讨

依据学习心得和工作经验，探讨了在破坏性地震现场要如何做好声像工作的问题。     

湖泊疏浚堆场淤泥污染及潜在生态风险评价

疏浚淤泥内通常含有不同类型的有毒有害物质,在堆场直接堆放过程中可能会对周围环境产生有害影响.本文针对太湖及巢湖相应疏浚堆场内淤泥进行研究,探讨淤泥中重金属、多环芳烃以及多氯联苯等污染物含量及潜在生态风险;根据重金属的风险指数法和持久性有机污染物的风险商法,对各污染物的潜在生态风险进行定量分析.研究结果表明,太湖白旄堆场以及孔湾堆场淤泥内重金属及多环芳烃含量较小,潜在生态风险较低;巢湖南庄堆场淤泥内各类有害物质含量较大,种类较多,对于周围环境具有较高的潜在生态威胁.多氯联苯则在各个疏浚堆场淤泥中具有很高的积累量,潜在生态风险较高,应引起管理者的重视.