张家口地区精细化地震灾害风险评估     

李姜  张合  刘志辉 《震灾防御技术》2021,16(1):134-145

本文从地震灾害、建筑物、人口、经济、抗震救灾等多方面出发，将自然属性与社会属性进行有效结合，对地震危险性、建筑物抗震性能等影响因素进行详细分析，构建城镇地震灾害风险评价指标体系，以张家口地区16个县区为例，采用专家-层次分析法，建立精细化地震灾害风险评估模型。研究结果表明，城镇建筑物抗震性能普遍较差，怀来县地震灾害风险最大，桥东区、蔚县、涿鹿县、桥西区次之，沽源县、康保县地震灾害风险最小，并对各县区地震灾害风险主要影响因素进行讨论，发现地震风险指数与地形结构、建筑物抗震性能具有相关性，评估结果可为城镇制定防震减灾规划提供依据。  相似文献   

Performance of hollow composite members subjected to cyclic eccentric loading     

H.‐L. Hsu  L.‐L. Liang 《地震工程与结构动力学》2003,32(3):443-461

This study focused on the experimental examination of how hollow composite members perform when subjected to eccentric lateral loading that induces combined bending and torsional stresses. It was found that premature cracking degraded section integrity and interfered with steel–concrete interaction when members were subjected to combined bending and torsion. It was also found that members' bending capacities and ductilities were significantly reduced when the members were subjected to torsion. Relationships among member performance, magnitude of torsion, and sectional aspect ratios were studied to evaluate the torsional effects on member performances and to establish design references for hollow composite member constructions. Copyright © 2003 John Wiley & Sons, Ltd.  相似文献   

低周反复荷载下高性能混凝土震损框架的抗震性能   总被引：1，自引：0，他引：1  

薛伟辰  程斌  李杰 《地震工程与工程振动》2003,23(3):107-112

基于预应力与非预应力高性能混凝土震损框架的低周反复荷载试验，对其受力过程、破坏形态、滞回曲线、骨架曲线、恢复力模型、变形恢复能力、刚度退化、耗能能力等抗震性能进行较为深入的研究与分析。研究表明：高性能混凝土震损框架的抗震性能较震损前有明显的降低，但仍具有一定的抗震能力。  相似文献   

钢筋混凝土框架-剪力墙结构推覆分析   总被引：7，自引：1，他引：7  

朱杰江  吕西林 《地震工程与工程振动》2003,23(4):56-63

结合新建筑抗震设计规范的要求，采用自编的高层结构三维推覆分析程序(TBPOA)对某复杂体型的高层建筑框架剪力墙结构进行了三维推覆分析研究，对该结构进行了结构抗震整体性能和局部性能的评价。研究结果表明，满足小震强度设计要求并按构造要求配筋的钢筋混凝土柱，在大震作用时可能有部分构件难以满足变形要求，通过推覆分析对构件和结构的变形性能进行评估是很有必要的。  相似文献   

结构的性能水准与评价指标   总被引：8，自引：0，他引：8  

李应斌  刘伯权  史庆轩 《世界地震工程》2003,19(2):132-137

基于结构性能的结构抗震设计理论要求预先确定明确的结构性能水准。从结构的破坏程度出发，将结构的性能分为五个水准，讨论了结构各系统的性能要求，并提出了评价性能水准的参数指标。  相似文献   

Liquefaction-related building damage in Adapazari during the Turkey earthquake of August 17, 1999     

Murat Mollamahmutoglu  Kamil Kayabali  Turgay Beyaz  Ersin Kolay 《Engineering Geology》2003,67(3-4):297-307

The goal of this paper is to present especially the source and the type of liquefaction-related failures of those buildings which satisfied the structural codes of buildings and practices but experienced settlement, tilting and overturning in Adapazari during the Turkey earthquake of August 17, 1999. In this context, the Adapazari region is first evaluated in terms of geological setting, tectonics, seismicity and liquefaction susceptibility based on in situ and laboratory test data. In addition, the number of stories, types of buildings and their related failures have been mapped accordingly. Furthermore, laboratory model tests are conducted to enforce and/or confirm the type of building's failures with particular reference to their geometrical shape and the number of stories assuming that the models representing buildings satisfy the structural codes of buildings and practices.  相似文献   

云微物理参数在飞机积冰分析和预报中的应用研究   总被引：1，自引：1，他引：1  

曹丽霞  纪飞  刘健文  白洁  王新炜 《气象》2004,30(6):8-12

对飞机积冰预报的现状进行了分析 ,介绍了积冰预报中云微物理参数的应用概况 ,并就积冰预报中云微物理参数的应用前景进行了分析和讨论。将模式模拟和卫星反演的微物理参数引入飞机积冰分析和预报 ,将进一步提高飞机积冰预报的准确性和合理性  相似文献   

新一代天气雷达对局地强风暴预警的改善   总被引：2，自引：0，他引：2  

俞小鼎 《气象》2004,30(8):3-7

介绍美国新一代天气雷达 (WSR 88D)与传统天气雷达在探测和预警局地强风暴方面的评分对比。评分系统采用命中率POD、误警率FAR和警报提前时间。这有助于了解正在布网的我国新一代天气雷达可能带来的对局地强对流风暴预警能力的改善程度。  相似文献   

Performance-based landfill design: development of a design component selection matrix using GIS and system simulation models     

Başak Tarhan  Kahraman Ünlü 《Environmental Geology》2005,49(1):133-147

Designing environmentally safe and economically feasible landfills can be a challenging task due to complex interactions that need to be taken into account between landfill size, waste and site characteristics. The main focus of this study is, by interfacing the geographic information systems (GIS) with system simulation models (SSM), to develop a methodology and a landfill design component selection matrix that can enable the determination of landfill design components providing the desired performance with minimal design details. In this paper, the conceptual framework and applications of the developed methodology demonstrating the selection of landfill design components that are suitable for the existing site conditions are presented. The conceptual model defines design variables, performance criteria and design components of a landfill. GIS and SSM are used to handle the site-specific data and to evaluate the landfill performance, respectively. Results indicate that the landfills having the same design characteristics show different performance under different site conditions; therefore, a landfill design that is technically and economically feasible should be selected on the basis of performance.  相似文献   

浅论岩土工程极限状态设计基本思想     

徐光黎  苏爱军 《地质科技情报》2005,24(Z1):145-150

论述了岩土工程极限状态设计的基本思想,包括极限状态的概念、土工参数设计值的确定过程和方法、构造物的重要度和场地地基复杂程度的划分、岩土工程类别、作用载荷组合、分项安全系数和极限状态设计等;给出了土工参数的实测值、导出值、标准值和设计值的确定原则或方法;指出在极限状态设计中,可通过增大设计作用效应或降低设计抗力的方法来进行岩土工程的可靠性设计.  相似文献