本文選題：水閘 + 有限元方法�。� 參考：《水利水電技術(shù)》2017年03期

【摘要】：由于我國建設(shè)初期的水閘工程設(shè)計(jì)經(jīng)驗(yàn)有限,未充分考慮到閘室抗震的實(shí)際需要,設(shè)計(jì)標(biāo)準(zhǔn)偏低,需要進(jìn)行抗震安全復(fù)核。以某水閘為例,由于其初設(shè)時(shí)未考慮抗震因素,但水閘位于地震基本烈度Ⅷ度區(qū),運(yùn)用有限元軟件ANSYS建立模擬水閘基礎(chǔ)及上部結(jié)構(gòu)的三維模型,采用模態(tài)分析反應(yīng)譜法進(jìn)行了地震動(dòng)力計(jì)算分析。結(jié)果表明:地震荷載作用下閘室最大沉降為31.43 mm,閘底板平均沉降26.18 mm,處于安全范圍之內(nèi);地基土層最大沉降變形集中發(fā)生于閘室地板邊緣向下、土層Ⅰ、土層Ⅱ、土層Ⅲ上部,土層Ⅱ部分沉降變形30 mm左右,在8級(jí)地震下有可能發(fā)生液化。閘室最大壓應(yīng)力為0.465 MPa,最大拉應(yīng)力為-76.76 k Pa,滿足規(guī)范要求。閘室抗滑穩(wěn)定性不滿足要求,地震條件下閘室?guī)ё杌蹇够�(wěn)定安全系數(shù)為0.944,不帶阻滑板抗滑穩(wěn)定安全系數(shù)為0.708,均小于允許抗滑穩(wěn)定安全系數(shù)1.05的要求,建議閘室拆除重建。
[Abstract]:Due to the limited design experience of sluice engineering in the early stage of construction in our country, the actual needs of seismic resistance of the lock chamber are not fully considered, and the design standard is on the low side, so it is necessary to carry out seismic safety review. Taking a sluice as an example, because the seismic factors were not taken into account when the sluice was first set up, but the sluice is located in the region of the basic earthquake intensity 鈪，

本文編號(hào)：1839444