火災作用下高層建筑關鍵構件和節點的損傷機制與防護

韓林海

摘 要：該研究目標為火災作用下高層建筑關鍵構件和節點的損傷機制與防護。研究內容主要包括：（1）火災作用下玻璃幕墻的破裂機制及其防護技術；（2）火災環境下高層建筑結構關鍵構件和節點的損傷機制；（3）高層建筑結構綜合抗火能力評價方法。在本年度取得多項成果，具體如下：（1）火災作用下玻璃幕墻的破裂機制及其防護技術研究；（2）高強混凝土構件抗火設計原理研究；（3）鋼-混凝土組合結構構件和節點抗火設計原理研究；（4）火災下高層建筑結構連續倒塌機理研究；（5）高層建筑結構綜合抗火能力評價方法研究。

關鍵詞：火災 高層建筑 關鍵構件 節點 損傷機制 防護

National Basic Research Program of China （973 Program）： Damage Mechanism and Protection of Key Elements and Joints of Tall Building Under Fire. Periodic Report.

Han Linhai

（Tsinghua University）

Abstract：This periodic report introduces the implementation status of this program. The responsible unit of this program is Tsinghua University， and the participating units include University of Science and Technology of China， Tongji University and Anhui University of Architecture. The aim of this program is to study the damage mechanism of key structural components and joints of high-rise buildings subjected to fire and the corresponding protection methods. The main researches include： （1）Failure mechanism and protection technique of glass wall subjected to fire； （2）Damage mechanism of key components and joints of high-rise buildings in fire； （3）Evaluation method on the capability of overall fire resistance of high-rise buildings. This program is well performed according to the schedule and many innovative outcomes have been achieved as follows. （1）Damage mechanism and protection technique of glass wall subjected to fire； （2）Fire-resistant design principles of high-strength concrete components； （3）Fire-resistant design principles of the components and joints in steel-concrete composite structures； （4）Progressive collapse mechanism of high-rise buildings subjected to fire； （5）Evaluation method on the capability of overall fire resistance of high-rise buildings. This program has a lot of outcomes， including： published 7 SCI papers， 10 EI papers； obtained 7 national patents； gave 4 plenary lectures on international conference； wrote 1 design code and 2 academic books； obtained 3 software copyrights. In this program， three researchers have been awarded the National Science Fund for Distinguished Young Scholars， the National Science Fund for Excellent Young Scholars， and the New Century Excellent Talents in University， respectively. In respect of finance， this program is executed as the budget. In addition， a series of works in organization and management have been implemented as follows： （1）Build a system of organization and management of this program. A management group has been established to daily management， evaluation and coordination of this program. （2）Employ a high-quality research team to improve the outcome level of this program， and enroll excellent people to participate this program， in order to promote the level of scientific outcomes.

Key Words：Fire disaster； Tall building； Key component； Joint； Damage mechanism； Protection