山西地震
山西地震
산서지진
EARHTQUAKE RESEARCH IN SHANXI
2011年
3期
29-32,36
,共5页
抗震设计%地震记录%软弱土%土层地震反应%等效线性化%逐步积分法
抗震設計%地震記錄%軟弱土%土層地震反應%等效線性化%逐步積分法
항진설계%지진기록%연약토%토층지진반응%등효선성화%축보적분법
seismic design%earthquake record%soft soil%earthquake response of layered soil%equivalent linearization%gradual integral method
对场地土层地震反应分析的主要方法进行介绍,在天津软弱土场地(Ⅳ类场地)上分别采用等效线性化和逐步积分的方法进行土层反应,并把土层反应得到的结果与天津地区Ⅳ类场地上的实际强震记录对比,发现等效线性化方法适用于天津软弱土场地土层地震反应。对软弱土场地土层地震反应结果进行分析,把该结果与GB50011—2010《建筑抗震设计规范》中相应的参数进行对比,分析两者之间的差别,为天津软弱土场地的抗震设防提供合理的建议。
對場地土層地震反應分析的主要方法進行介紹,在天津軟弱土場地(Ⅳ類場地)上分彆採用等效線性化和逐步積分的方法進行土層反應,併把土層反應得到的結果與天津地區Ⅳ類場地上的實際彊震記錄對比,髮現等效線性化方法適用于天津軟弱土場地土層地震反應。對軟弱土場地土層地震反應結果進行分析,把該結果與GB50011—2010《建築抗震設計規範》中相應的參數進行對比,分析兩者之間的差彆,為天津軟弱土場地的抗震設防提供閤理的建議。
대장지토층지진반응분석적주요방법진행개소,재천진연약토장지(Ⅳ류장지)상분별채용등효선성화화축보적분적방법진행토층반응,병파토층반응득도적결과여천진지구Ⅳ류장지상적실제강진기록대비,발현등효선성화방법괄용우천진연약토장지토층지진반응。대연약토장지토층지진반응결과진행분석,파해결과여GB50011—2010《건축항진설계규범》중상응적삼수진행대비,분석량자지간적차별,위천진연약토장지적항진설방제공합리적건의。
Main methods for earthquake response analysis on layered site soil are introduced. Responses of soft soil site in Tianjin are made separately by using the methods of equivalent linearization and gradual integral. Compared with the real strong motion record of the fourth kind of site in Tianjin area, it is found that equivalent linearization method is better for the soft soil site in Tianjin. Also,the response results of soft soil site layer are analyzed and compared with the corresponding parameters of 〈(Code for Earthquake Resistance Design of Buildings》 GB 50011--2010, and the difference between the two is analyzed. Based on discussion above, the reasonable suggestions are proposed for fortification against earthquake of soft soil site in Tianjin.