摘要
评述了预应力混凝土框架的抗震性能 ,并从下列两个方面探讨了保证创造良好抗震性能的设计方法 :通过计算保证“强柱弱梁”和控制位移反应 ;设计合理的配筋指数、部分预应力比和拉应力限制系数 ,保证框架具有良好的延性、耗能能力和符合要求的裂缝宽度。推荐了混凝土设计规范中目前尚缺乏而工程设计又急需的若干抗震设计控制的建议值。
The seismic behavior of a prestressed concrete frame has been evaluated.The design method to create and guarantee good seismic performance of prestressed concrete frames has been discussed from the following two aspects.Through calculation,“a column is stronger than a beam”is guaranteed and displacement response is controlled.A steel bar index,a ratio of partial prestress and a limit coefficient of tensile stress are put to rational design to guarantee good ductility,ability consuming energy and controlling crack in such frame.This paper also recommends some values to control a seismic design,which is absent in present code and necessary in present engineering design.
出处
《建筑结构》
CSCD
北大核心
2002年第1期46-48,30,共4页
Building Structure
关键词
预应力混凝土
框架结构
抗震设计
延性
地震反应
prestressed concrete
frame structure
seismic design
ductility
earthquake response
