A Simple Method to Predict Temperatures in Steel Joints with Partial Intumescent Coating Fire Protection
A Simple Method to Predict Temperatures in Steel Joints with Partial Intumescent Coating Fire Protection
复制标题
预测部分膨胀涂层防火钢接头温度的简单方法
DOI：
10.1007/s10694-009-0095-7
复制
发表时间：
2009
期刊：
影响因子：
3.4
通讯作者：
C. Bailey
中科院分区：
文献类型：
--
作者：
X. Dai;Yong C. Wang;C. Bailey
根据不同防火等级钢节点的实测温度，提出了一种计算局部膨胀型涂料防火钢节点温度的简便方法。该方法结合了EN 1993-1-2中简单的温度计算方法欧洲标准化委员会CEN，欧洲规范3：钢结构设计-第1-2部分：一般规则-结构防火设计，2005）通过引入暴露系数，其是关节区域的未受保护的表面积与关节区域的总表面积的比率。利用全保护钢节点的实测温度，本文首先提取了火灾试验中所用膨胀型涂料的有效导热系数。然后，本文提出了验证结果的基础上，火灾试验结果的节点与部分防火。最后，本文提出了不同类型的部分防火钢节点的暴露系数的计算方法。
Based on temperatures measured in steel joints with different extents of fire protection, this paper proposes a simple method to calculate temperatures in steel joints with partial intumescent coating fire protection. The method combines the simple temperature calculation methods in EN 1993-1-2 (Committee of European Normalisation CEN, Eurocode 3: design of steel structures—part 1-2: general rules—structural fire design, 2005) for unprotected and protected steel structures through the introduction of an exposure factor, which is the ratio of the unprotected surface area of the joint region to the total surface area of the joint area. Using the measured temperatures for fully protected steel joints, this paper first extracts the effective thermal conductivity of the intumescent coating used in the fire tests. Afterwards, this paper presents validation results based on fire test results on joints with partial fire protection. Finally, this paper presents methods to calculate the exposure factor for different types of partially fire protected steel joints.