上海中学体育馆大跨超限结构设计

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关键词基于性能的抗震设计，抗震性能目标，屈曲约束支撑，楼盖振动舒适度，装配式混凝土建筑中图分类号：TU375.4；TU318 文献标志码：A DOI： 10.15935/j.cnki.jggcs.202504.0020

AbstractAccording to current regulations，codes，and standards，the gymnasium structure of Shanghai High School—located in a keyseismic monitoring area—requires a three-level，three-stage design to achieve seismic performance objectives of full functionality under frequent earthquakes，normal operation under fortification-intensity earthquakes，and basicusability underrare earthquakes.By integrating bucklingrestrained braces （BRBs），this design ensures energy-dissipation devices act as the primary seismic defense to protectthe main structural system.Key issues，including human comfort for large-span floor vibrations in the basketballarena，integrityof the floor slab plane，and structural stabilityof the single large-span transfer truss，were rigorously analyzed.Suitable prefabricated structural strategies were formulated based on building characteristics and policy requirements.Analysis results demonstrate that：（1）the main structure exhibits robust seismic performance with key components being safe and reliable，achieving all three predefined seismic performance goals；（2） properly designed buckling-restrained braces function effectively as seismic “fuses”for energy dissipation;（3） tuned mass dampers（TMDs） significantly improve human comfort for the large-span roof of the basketball gymnasium；（4）prefabricated steel-mesh mold sandwich insulation wals substantially enhance the prefabrication rate.This methodology provides a reference for the structural design of similar projects.

Keywordsperformance-based seismic design，seismic performance objectives，buckling-restrained brace， human comfort of the floor vibration，prefabricated buildings

1 工程概况

本工程位于上海市奉贤区上海中学国际部奉贤分校校区内。（剩余9622字）