城市高架橋群樁基礎沉降量計算評價
發(fā)布時間：2018-07-25 11:55
【摘要】：探討城市高架橋群樁基礎沉降量計算評價方法,為樁基沉降安全評價提供理論依據(jù)。在詳細總結深厚軟土層區(qū)群樁基礎沉降的影響因素和目前工程中常用的沉降量計算方法的基礎上,針對具體的工程實例采用等代墩基法、等效作用分層總和法、彈性理論法以及Flac 3D數(shù)值模擬方法分別計算了高架橋群樁基礎的沉降量和應力位移場變化規(guī)律,并與實測數(shù)據(jù)進行對比分析。結果表明,采用彈性理論法和等代墩基法計算沉降量與實際吻合較好,等效作用分層總和法和數(shù)值模擬方法計算結果雖然偏大,但應用的范圍較廣。至少3種方法得到的沉降量均小于允許值,才能判定沉降量滿足安全要求。
[Abstract]:This paper discusses the calculation and evaluation method of the settlement of the pile foundation of the urban viaduct, and provides the theoretical basis for the safety evaluation of the pile foundation settlement. On the basis of the detailed summary of the influence factors of the pile foundation settlement in the deep soft soil layer and the common settlement calculation method in the project, the equivalent function is used for the concrete engineering examples. The layer sum method, elastic theory method and Flac 3D numerical simulation method are used to calculate the variation of the settlement and stress displacement field of the high bridge pile group, and compare with the measured data. The results show that the calculation of the settlement by the elastic theory method and the equivalent pier base method is good, and the equivalent effect stratification method and number are calculated. The calculation results of the value simulation method are large, but the scope of application is wide. At least the settlement amount obtained by the 3 methods is less than the allowable value, and the settlement can be judged to meet the safety requirements.
【作者單位】： 西南交通大學經濟管理學院;成都交通投資集團;西南交通大學土木工程學院;高速鐵路線路工程教育部重點實驗室;中國地質大學工程學院;
【分類號】：U443.15
[Abstract]:This paper discusses the calculation and evaluation method of the settlement of the pile foundation of the urban viaduct, and provides the theoretical basis for the safety evaluation of the pile foundation settlement. On the basis of the detailed summary of the influence factors of the pile foundation settlement in the deep soft soil layer and the common settlement calculation method in the project, the equivalent function is used for the concrete engineering examples. The layer sum method, elastic theory method and Flac 3D numerical simulation method are used to calculate the variation of the settlement and stress displacement field of the high bridge pile group, and compare with the measured data. The results show that the calculation of the settlement by the elastic theory method and the equivalent pier base method is good, and the equivalent effect stratification method and number are calculated. The calculation results of the value simulation method are large, but the scope of application is wide. At least the settlement amount obtained by the 3 methods is less than the allowable value, and the settlement can be judged to meet the safety requirements.
【作者單位】： 西南交通大學經濟管理學院;成都交通投資集團;西南交通大學土木工程學院;高速鐵路線路工程教育部重點實驗室;中國地質大學工程學院;
【分類號】：U443.15
【相似文獻】
相關期刊論文 前10條
1 魯傳安;葉愛君;;沖刷效應對群樁基礎抗震能力影響及改善措施淺析[J];公路;2011年01期
2 候振江;關于群樁施工相互擠壓影響問題[J];水運工程;1989年11期
3 W.Y.SHEN,Y.K.CHOW,K.Y.YONG,周常春,鄧安福,丁濟新;群樁-承臺基礎共同作用的變分分析法[J];地下空間;2001年02期
4 王玉海,初德士,黃國剛;群樁基礎的工作原理分析[J];林業(yè)科技情報;2002年02期
5 王偉,楊敏;基于變分原理的群樁位移計算方法[J];巖土工程學報;2005年09期
6 曾友金,章為民,王年香,徐光明;某大型啞鈴型承臺群樁基礎與土體共同作用豎向承載變形特性數(shù)值模擬分析[J];巖土工程學報;2005年10期
7 程翔云;;群樁基礎等代模型的改善[J];公路;2006年01期
8 王年香;章為民;;超大型群樁基礎承載特性離心模型試驗研究[J];世界橋梁;2006年03期
9 張俊發(fā);黃瑜;聞建軍;劉云賀;趙鴻鐵;;群樁基礎的復合體模型建立與應用[J];巖土工程學報;2006年09期
10 任麗芳;穆蘭;杜玉林;;橋梁群樁基礎沉降特性與計算方法[J];石家莊鐵路職業(yè)技術學院學報;2006年04期
相關會議論文 前10條
1 賀，
本文編號：2143746
本文鏈接：http://sikaile.net/kejilunwen/daoluqiaoliang/2143746.html
