發(fā)布時(shí)間：2019-05-29 23:50

【摘要】：以分析水工隧洞在地震激勵(lì)作用下的變形破壞機(jī)制為目標(biāo),針對(duì)不同圍巖類型和襯砌厚度條件下水工隧洞位移變化,根據(jù)地下結(jié)構(gòu)抗震計(jì)算理論,選取合理的材料參數(shù)和模型邊界條件,使用ANSYS建立了某水工隧洞的三維有限元模型,對(duì)其施加水平和豎向地震激勵(lì),應(yīng)用瞬態(tài)分析法計(jì)算了隧洞結(jié)構(gòu)模型在不同圍巖類型和襯砌厚度下的水工隧洞動(dòng)力響應(yīng)。結(jié)果表明,在相同襯砌厚度下,隨著隧洞圍巖強(qiáng)度的降低,水平位移和豎向位移受影響的程度有明顯的區(qū)別,即水平位移越來越大,豎直位移無明顯規(guī)律可循;在相同的圍巖強(qiáng)度下,水工隧洞并不會(huì)隨著襯砌厚度的增加而趨于穩(wěn)定,在Ⅲ類圍巖的情況下,水工隧洞的位移隨著襯砌厚度的增加而越來越大,Ⅴ類圍巖下改變襯砌厚度對(duì)水工隧洞的位移幾乎沒有影響。因此,合理的設(shè)計(jì)圍巖類型和襯砌厚度,可以既滿足水工隧洞抗震性能要求,又能夠降低工程造價(jià)。研究結(jié)果對(duì)合理設(shè)計(jì)隧洞襯砌厚度、增強(qiáng)抗震性能具有參考價(jià)值。
[Abstract]:In order to analyze the deformation and failure mechanism of hydraulic tunnel under seismic excitation, according to the displacement change of hydraulic tunnel under different surrounding rock types and lining thickness, according to the seismic calculation theory of underground structure, By selecting reasonable material parameters and model boundary conditions, the three-dimensional finite element model of a hydraulic tunnel is established by using ANSYS, and horizontal and vertical seismic excitation is applied to it. The dynamic response of tunnel structure model under different surrounding rock types and lining thickness is calculated by transient analysis method. The results show that under the same lining thickness, with the decrease of surrounding rock strength of tunnel, the influence degree of horizontal displacement and vertical displacement is obviously different, that is, the horizontal displacement is larger and larger, and the vertical displacement has no obvious law to follow. Under the same surrounding rock strength, the hydraulic tunnel does not tend to be stable with the increase of lining thickness. In the case of type III surrounding rock, the displacement of hydraulic tunnel increases with the increase of lining thickness. The change of lining thickness under class V surrounding rock has little effect on the displacement of hydraulic tunnel. Therefore, reasonable design of surrounding rock type and lining thickness can not only meet the seismic performance requirements of hydraulic tunnel, but also reduce the project cost. The research results have reference value for reasonable design of tunnel lining thickness and enhancement of seismic performance.
【作者單位】： 鄭州大學(xué)水利與環(huán)境學(xué)院;鄭州市水利建筑勘測(cè)設(shè)計(jì)院;
【分類號(hào)】：TV312;TV672.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王沿朝;陳清軍;;地震波反演與地下結(jié)構(gòu)的動(dòng)力響應(yīng)分析[J];工程力學(xué);2016年S1期

2 李哲;王貢獻(xiàn);胡勇;胡吉全;;改進(jìn)的瑞利阻尼系數(shù)計(jì)算方法在岸橋結(jié)構(gòu)地震反應(yīng)分析中的應(yīng)用[J];華南理工大學(xué)學(xué)報(bào)(自然科學(xué)版);2015年06期

3 林皋;任紅梅;;復(fù)雜不均勻地層中地下結(jié)構(gòu)波動(dòng)響應(yīng)頻域分析[J];大連理工大學(xué)學(xué)報(bào);2008年01期

4 谷音;劉晶波;杜義欣;;三維一致粘彈性人工邊界及等效粘彈性邊界單元[J];工程力學(xué);2007年12期

5 郭軍;王明年;田尚志;;高烈度地震區(qū)公路隧道明洞抗震計(jì)算分析[J];巖土工程學(xué)報(bào);2007年11期

6 劉晶波;谷音;杜義欣;;一致粘彈性人工邊界及粘彈性邊界單元[J];巖土工程學(xué)報(bào);2006年09期

7 高峰,關(guān)寶樹;隧道地震反應(yīng)分析中幾種邊界條件的比較[J];甘肅科學(xué)學(xué)報(bào);2004年01期

8 陳健云,胡志強(qiáng),林皋;大型地下結(jié)構(gòu)三維地震響應(yīng)特點(diǎn)研究[J];大連理工大學(xué)學(xué)報(bào);2003年03期

9 林皋,梁青槐;地下結(jié)構(gòu)的抗震設(shè)計(jì)[J];土木工程學(xué)報(bào);1996年01期

10 林皋;;地下結(jié)構(gòu)抗震分析綜述(下)[J];世界地震工程;1990年03期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊東;林浩;李玉路;王文斌;張勝龍;;附建式變電站受地鐵運(yùn)行振動(dòng)影響的研究[J];現(xiàn)代城市軌道交通;2017年06期

2 顏鋒;祁躍;何連華;張，

本文編號(hào)：2488327