工业建筑抗震关键技术研究

Research on key technologies for seismic design of industrial buildings

对工业建筑抗震的关键技术难题,建立动态多目标抗震设防理论,创建承载力、刚度、延性相互匹配的量化性能指标体系;提出体系层次化、构件梯次化的抗震设计方法,并给出相应的量化控制准则,解决了工业建筑防地震连续倒塌的技术难题;基于结构耗能能力和耗能需求的逻辑关系提出抗震冗余度需求比的概念,并给出量化分级评价标准;提出基于等能量原理的抗震优化设计方法,理顺钢结构抗震设计中的刚度、强度和延性的逻辑匹配关系,弥补现行规范的若干不足;提出设备-结构耦联效应简化设计方法,并给出考虑耦联作用的界限指标;依据现有的地震危险性研究成果,建立地震地面运动峰值加速度的重现期调整系数确定方法,攻克特定后续使用年限条件下抗震性能评价的关键技术难题;研发质量可调TMD减震系统、特种功能材料、在役预应力加固工艺等系列技术,有效解决连续生产条件下的抗震性能提升问题。

To solve the key technical problems of seismic design of industrial buildings, the dynamic multi-objective seismic fortification theory and the corresponding quantitative performance index system with bearing capacity, stiffness and ductility matching each other are established. The seismic design method with hierarchy of system and echelon of component is put forward, and the corresponding quantitative control criterion is given, which solves the technical problem of continuous collapse prevention of industrial buildings in earthquake. Based on the logical relationship between the structural energy dissipation capacity and energy consumption demand, the concept of seismic redundancy demand ratio is proposed, and the corresponding quantitative classification evaluation standard is given. The seismic optimization design method based on the principle of equal energy is put forward, which straightens the logical matching relation of stiffness, strength and ductility in the seismic design of steel structure, and makes up some shortcomings of the current standard. A simplified design method considering the equipment-structure coupling effect is put forward, and the corresponding boundary index is given. According to the existing research results of seismic hazard, a method for determining the adjustment coefficient for the recurrence period of the peak seismic ground motion acceleration is established. A series of technologies, such as the TMD damping system with adjustable quality, special functional material, and in-service prestressing reinforcement technology, have been developed, which effectively solvethe problem of improving the seismic performance under continuous production conditions.