日韩欧美国产综合_国产成人精品网址_欧美大波大乳巨大乳_激情综合五月网_99视频免费观看_欧美日韩国产综合久久_久久在线视频_国产小黄视频_丁香激情五月少妇_国产在线98福利播放视频

PDF全文閱讀

梁旭華1 ,  劉楊2 ,  李雨潤2 , 3

( 1 .  唐山市市政建設(shè)總公司 ，河北 唐山 063000 ;  

2.  河北工業(yè)大學 土木與交通學院 ，天津 300401 ;

3 .  河北省土木工程技術(shù)研究中心 ，天津 300401)

摘   要 ：本文通過數(shù)值模擬的方法開展實際工程地下結(jié)構(gòu)地震響應分析。以天津某軟土場地下十字換乘地 鐵車站工程為背景 ，建立穿越體系  (Cr) 、單體車站  (Ss -2) 、單體車站  ( Ss - 4)   和自由場  ( Ff)四種數(shù)值模型 ，通過改變地震波類型和幅值來探究軟土場地下十字換乘地鐵車站與單體車站地震響應規(guī)律的異同。結(jié)果表 明 ：相比于單體車站結(jié)構(gòu) ，十字換乘車站體系對土體加速度放大效應有著更明顯的抑制作用 ；不同車站模型位 移 、應力和加速度均不相同 ， 同一模型不同車站其響應規(guī)律也不同 ， 當罕遇地震來臨時 ，車站換乘段容易出現(xiàn) 失穩(wěn)破壞 ，總體來看 ，十字換乘車站穩(wěn)定性要優(yōu)于單體車站。

關(guān)鍵詞： 十字交叉車站 ；穿越體系 ；靜－動力人工邊界 ；地震響應

中圖分類號：TU921   

文獻標志碼：A    

文章編號： 1005- 8249  (2024)  03- 0106- 07 

DOI：10. 19860/j.cnki.issn1005 - 8249.2024.03 .021

 

LIANG Xuhua1  ,  LIU Yang2 ,  LI Yurun2 , 3

1 . Tangshan Municipal Construction Corporation , Tangshan 063000 , China;  

2. School of Civil Engineering and Transportation , Hebei University of Technology , Tianjin 300401 , China;

3 . Hebei Civil Engineering Technology Research Centre , Tianjin 300401 , China

Abstract :  In this paper , the seismic response analysis of underground structures of actual projects is carried out by numerical simulation.  With the background of a cross - interchange underground station project in a soft soil site in Tianjin , four numerical models , namely , crossing system (Cr) , single station(Ss - 2) , single station(Ss - 4) and free field  (Ff) , are established to investigate the similarities and differences of the seismic response of cross - interchange underground station and single station in soft soil site by changing the seismic wave types and amplitudes. The results show that : compared with the monolithic station structure , the cross - over station  system has a more obvious inhibition effect on the acceleration amplification effect of the soil;the displacement , stress  and acceleration of different station models are different , and the response law of different stations with the same model is also different; when the rare earthquakes come , the interchange section of the station is prone to be destabilised and damaged , and the stability of the interchange station is better than that of monolithic  station in general.

Keywords :  crossover stations;  crossing system;  static - dynamic artificial boundaries;  seismic response

 

*基金項目：河北省自然科學基金資助項目  (E2023202028) 。

作者簡介：梁旭華  (1973—) ,   女 ，本科 ，高級工程師 ，研究方向：水處理工程。 

通信作者：劉   楊  (1999—) ,  男 ，碩士研究生 ，研究方向：巖土工程。

收稿日期：2024- 03- 28