鋼筋混凝土高墩抗震性能評價指標(biāo)
發(fā)布時間:2018-08-07 18:22
【摘要】:基于性能的抗震設(shè)計是結(jié)構(gòu)抗震設(shè)計規(guī)范的主要發(fā)展方向,其中結(jié)構(gòu)抗震性能水準(zhǔn)的定義及其性能指標(biāo)的選擇和量化對結(jié)構(gòu)抗震性能評價至關(guān)重要。根據(jù)鋼筋混凝土高墩的地震反應(yīng)特性,確定采用曲率延性系數(shù)作為性能參數(shù),并給出橋墩在地震作用下曲率延性系數(shù)對應(yīng)各性能水準(zhǔn)的量化值。分別以位移延性系數(shù)、位移角限值以及曲率延性系數(shù)作為性能評價指標(biāo),采用增量動力分析法對橋墩進(jìn)行抗震性能研究,分析結(jié)果表明:對于鋼筋混凝土高墩而言,曲率延性指標(biāo)更為合理可靠,尤其是在強(qiáng)震作用下能夠更準(zhǔn)確反映墩柱的內(nèi)部破壞情況。
[Abstract]:Performance-based seismic design is the main development direction of seismic design code for structures. The definition of seismic performance level of structures and the selection and quantification of performance indexes are very important for seismic performance evaluation of structures. According to the seismic response characteristics of reinforced concrete high pier, the curvature ductility coefficient is determined as the performance parameter, and the quantitative value of curvature ductility coefficient corresponding to each performance level under seismic action of bridge pier is given. Taking displacement ductility coefficient, displacement angle limit value and curvature ductility coefficient as performance evaluation indexes, the seismic behavior of pier is studied by incremental dynamic analysis method. The results show that: for reinforced concrete high pier, The curvature ductility index is more reasonable and reliable, especially under strong earthquake.
【作者單位】: 重慶大學(xué)土木工程學(xué)院;重慶大學(xué)山地城鎮(zhèn)建設(shè)與新技術(shù)教育部重點(diǎn)實(shí)驗室;
【基金】:重慶市自然科學(xué)基金資助項目(CSTC,2011BB6072) 國家自然科學(xué)基金資助項目(50908245) 中央高;究蒲袠I(yè)務(wù)費(fèi)資助項目(CDJZR 12205528)
【分類號】:U442.55
[Abstract]:Performance-based seismic design is the main development direction of seismic design code for structures. The definition of seismic performance level of structures and the selection and quantification of performance indexes are very important for seismic performance evaluation of structures. According to the seismic response characteristics of reinforced concrete high pier, the curvature ductility coefficient is determined as the performance parameter, and the quantitative value of curvature ductility coefficient corresponding to each performance level under seismic action of bridge pier is given. Taking displacement ductility coefficient, displacement angle limit value and curvature ductility coefficient as performance evaluation indexes, the seismic behavior of pier is studied by incremental dynamic analysis method. The results show that: for reinforced concrete high pier, The curvature ductility index is more reasonable and reliable, especially under strong earthquake.
【作者單位】: 重慶大學(xué)土木工程學(xué)院;重慶大學(xué)山地城鎮(zhèn)建設(shè)與新技術(shù)教育部重點(diǎn)實(shí)驗室;
【基金】:重慶市自然科學(xué)基金資助項目(CSTC,2011BB6072) 國家自然科學(xué)基金資助項目(50908245) 中央高;究蒲袠I(yè)務(wù)費(fèi)資助項目(CDJZR 12205528)
【分類號】:U442.55
【參考文獻(xiàn)】
相關(guān)博士學(xué)位論文 前1條
1 劉艷輝;基于性能抗震設(shè)計理論的城市高架橋抗震性能研究[D];西南交通大學(xué);2008年
【共引文獻(xiàn)】
相關(guān)博士學(xué)位論文 前10條
1 周莉;城市橋梁地震碰撞分析及抗震性能評估[D];天津大學(xué);2010年
2 李磊;混合結(jié)構(gòu)的數(shù)值建模理論及在地震工程中的應(yīng)用[D];西安建筑科技大學(xué);2011年
3 王建民;基于概率的橋梁結(jié)構(gòu)抗震性能研究[D];北京交通大學(xué);2006年
4 梁智W,
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