可液化土層的位置對土層-地下結(jié)構(gòu)地震反應的影響
[Abstract]:In order to study the influence of different positions of liquefaction soil layer on seismic response of underground structure, PL-Fin soil liquefaction constitutive model and FLAC3D were used to study the distribution of liquefaction zone at the time of liquefaction and large deformation. The variation and difference of pore water pressure to excess pore water pressure, the displacement and differential settlement of underground structure, and the seismic response of underground structure in non-liquefaction field are compared. The main conclusions are as follows: when there is liquefaction soil layer at the bottom of the structure, the displacement of the structure will be the largest, which will cause the structure to sink, and the liquefaction of the soil on both sides of the structure will cause the structure to float, and increase the horizontal displacement of the lateral wall and the vertical displacement of the roof and floor. When the whole structure is located in the liquefaction soil, the difference of soil displacement, structural displacement and the displacement between the layers is not the maximum. There is a liquefied soil layer at 45 擄position on the left and right sides and 45 擄position on the bottom and bottom at the bottom and bottom. Under six working conditions, the displacement of the roof y to the floor of the structure is basically the same, but there is a liquefied soil layer in different positions of the station. There are some differences between the reaction of soil liquefaction and the influence on the structure, and the large deformation of liquefaction occurs after 1 ~ 3 seconds after the increase of pore water pressure and super-pore pressure ratio, so it can be judged by the sudden change of pore water pressure and super-pore pressure ratio whether or not liquefaction large deformation occurs.
【作者單位】: 北京工業(yè)大學城市與工程安全減災省部共建教育部重點實驗室;
【基金】:國家科技重大專項資助項目(51421005,41272337) 北京市自然科學基金委員會-北京市科學技術(shù)研究院聯(lián)合資助項目(L140004)~~
【分類號】:TU435
【相似文獻】
相關(guān)期刊論文 前7條
1 王建華;周揚銳;;飽和弱化與液化土層的水平極限抗力[J];世界地震工程;2010年04期
2 孫銳;袁曉銘;陳龍偉;曹振中;;液化土層對地表位移譜的影響[J];世界地震工程;2009年03期
3 侯龍清;陳松;陳革;徐紅梅;程麗紅;;板橋?qū)W校液化帶工程地質(zhì)條件及液化土層特性[J];水文地質(zhì)工程地質(zhì);2012年01期
4 王剛;張建民;魏星;;可液化土層中地下車站的地震反應分析[J];巖土工程學報;2011年10期
5 佘芳濤;邵生俊;楊素新;;可液化土層隧道圍巖的動力響應及液化區(qū)發(fā)展分析[J];地震工程與工程振動;2011年03期
6 李雨潤;袁曉銘;李帆;;基于API規(guī)范的液化土層樁基p-y曲線修正計算公式[J];地震工程與工程振動;2010年06期
7 ;[J];;年期
相關(guān)會議論文 前3條
1 孫銳;袁曉銘;;液化土層地震動模擬計算方法及驗證[A];第九屆全國巖土力學數(shù)值分析與解析方法討論會論文集[C];2007年
2 湯克禮;劉元生;;地震液化土層判別的初步研究[A];中國地震學會第六次學術(shù)大會論文摘要集[C];1996年
3 袁曉銘;孟凡超;孟上九,;孫銳;;液化土層上建筑物傾斜計算要點初步分析[A];第九屆全國巖土力學數(shù)值分析與解析方法討論會論文集[C];2007年
相關(guān)博士學位論文 前1條
1 孫銳;液化土層地震動和場地液化識別方法研究[D];中國地震局工程力學研究所;2006年
相關(guān)碩士學位論文 前2條
1 董鳳金;液化土層地震動反應譜分析方法及應用研究[D];華僑大學;2006年
2 蔡曉光;液化土層兩種機制下側(cè)向大變形分析[D];中國地震局工程力學研究所;2004年
,本文編號:2270430
本文鏈接:http://sikaile.net/kejilunwen/diqiudizhi/2270430.html