基于“破坏-安全”理念的型钢混凝土柱防火设计

doi:10.11799/ce201410026

煤炭工程 ›› 2014, Vol. 46 ›› Issue (10): 97-99.doi: 10.11799/ce201410026

基于“破坏-安全”理念的型钢混凝土柱防火设计

王羡农,王忠铖,贾博雅,王囡囡

河北工程大学

收稿日期:2014-05-13 修回日期:2014-06-13 出版日期:2014-10-10 发布日期:2014-10-10
通讯作者: 王忠铖 E-mail:asdxiongasd@163.com

The fireproofing design of Steel Reinforced Concrete column based on Fail-safe seismic design

Received:2014-05-13 Revised:2014-06-13 Online:2014-10-10 Published:2014-10-10

摘要/Abstract

摘要：

基于“破坏-安全”抗震理念，对型钢混凝土柱在火灾情况下由于表皮混凝土的“爆裂”而致使承载力及耐火极限大幅下降进行了优化设计。通过预定“爆裂”位置同时对该位置进行预加固与防火处理来保证即便混凝土脱落、型钢暴露在外，型钢混凝土柱仍具有保证结构整体及内部人员安全的承载力与耐火极限，并采用理论推导与ANSYS有限元分析软件对优化方法进行验证。结论表明对型钢混凝土柱做预先加固与防火处理可以提高型钢混凝土柱在火灾情况下刚度及耐火极限，从而提高结构在火灾这种突发状况下的安全性。

关键词: “破坏-安全”抗震理念, 有限单元法, SRC柱, 耐火性能

Abstract:

The bearing capacity and fireproof limit of SRC column will sharply descend considering the crack of outside concrete , so this optimal design method is based on fail-safe seismic design. By preassigning and pre-reinforced the position of outside concrete that will easily crack ,the optimal design method can guarantee the global stability of the structure and the personnel safety inside. Then verifying the method by theoretical derivation and large finite element analysis software ANSYS. The results indicate that preassigning and pre-reinforced the position of outside concrete do increase the stiffness and fireproof limit of the column , consequently ,increasing the security under the emergency of fire.

Key words: fail-safe seismic design, the finite element method, steel reinforced concrete column, fire-resistance performance