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全国第一届超高层建筑消防学术会议

作者： J Y Richard Liew H X Yu Rune Natten Kleivel Department of Civil Engineering National University of Singapore

In the last decades,computers have been widely used in the investigation of structural behaviour and failures.The revolution of computing speed sees an increased reliance of direct analysis for designing large-scale structural system.This Paper reviews some of the principles related to the use of direct analysis for performance based design of steel and composite frames and discusses the issues that are essential for implementation in practice.Illustrative examples are given to show the benefits of using direct analysis for evaluating the overall performance of structural systems in terms of serviceability,ultimate strength under accidental design situations such as fire.

关键词： Direct analysis composite structures fire analysis performance-based design

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Behaviour of a Composite Concrete-Trapezoidal Steel Plate Slab in fire

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Engineering（科研） 2010年第8期2卷 594-601页

作者： Tomaz Hozjan Miran Saje Igor Planinc Stanislav Srpcic Sebastjan Bratina University of Ljubljana Faculty of Civil and Geodetic EngineeringLjubljanaSlovenia

The present paper investigates fire resistance of a simply-supported composite concrete-trapezoidal steel sheet slab. The objective is to find out if a steel sheet, as a moisture diffusion barrier, may substantially effect the hydro-thermal situation in the concrete part of the cross-section. The numerical integration of the equations of a coupled hygro-thermal boundary-value problem (Tenchev, R.T., Li, L.Y. and Purkiss, J.A. (2001) Num. Heat Transfer Part A, 39(7), 685-710), with and without considering the barrier, shows that the barrier does not really effect the magnitude and the development of temperatures over the cross-section, while there is a significant effect on the pattern of moisture transport and the magnitude of vapour pressure. Particularly high magnitudes of vapour pressure (about 4.5 MPa) were shown in cases where the steel sheet was considered in analyses, which indicates a possible micro damage of concrete in the web of the section, although spalling probably cannot take place due to the steel sheet cover. As the typical composite slab investigated here is not sufficiently fire resistant without any additional reinforcement bars placed in the web, further in-vestigations are directed to finding an optimal position and area of these bars. Following a simplified procedure given in EC2 (Eurocode 2, Design of Concrete Structures, Part 1.2 (2004) Structural fire design, European Committee for Standardization) and assuming that the present composite slab is subject to the uniform traction , yields that placing one bar with the area 1.153 cm2 4 cm away from the edge suffices for the 60 min fire resistance of the slab.

关键词： fire analysis Composite Structures Heat and Mass Transfer

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GC-MS/MS在分析纵火剂中的应用

GC-MS/MS在分析纵火剂中的应用

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2005年全国有机质谱学术交流会

作者：杨曦韩玮张继华刘锦锋新疆自治区公安厅物证鉴定中心

近年来,新疆地区相继发生了影响较大的纵火案件,在侦破此类案件中对纵火剂的确定尤为重要,它能够对案件的定性提供科学依据,对案件的侦查提供正确的方向,对案件的起诉提供有力的证据。

关键词： fire analysis 90# gasoline GC -MS GC - MS/MS

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