本文關(guān)鍵詞：拆撐及鄰近基坑開(kāi)挖對(duì)坑底樁基位移的聯(lián)合影響分析　出處：《防災(zāi)減災(zāi)工程學(xué)報(bào)》2016年05期 　論文類型：期刊論文

  更多相關(guān)文章： 局部拆撐 鄰近基坑開(kāi)挖 附加變形

【摘要】：以某基坑工程項(xiàng)目為例,分析了局部拆撐及鄰近分區(qū)基坑開(kāi)挖對(duì)基坑坑底樁基側(cè)移的影響。首先采用圍護(hù)結(jié)構(gòu)分析軟件FRWS7.4對(duì)拆撐過(guò)程進(jìn)行受力分析,然后根據(jù)力平衡原理,將得到的底板側(cè)向作用力作用于樁基,并采用有限元軟件ABAQUS進(jìn)行二維模擬,得出局部拆撐過(guò)程中樁基位移和應(yīng)力云圖;然后計(jì)算了鄰近基坑開(kāi)挖造成的坑底樁基側(cè)移,將局部拆撐及鄰近基坑開(kāi)挖對(duì)坑底樁基產(chǎn)生的附加側(cè)移結(jié)果進(jìn)行疊加,得出坑底樁基最終位移。結(jié)果表明,局部拆撐過(guò)程中樁基安全儲(chǔ)備較足,后期的鄰近基坑開(kāi)挖過(guò)程對(duì)坑底樁基側(cè)移影響較大,但不影響其正常使用。
[Abstract]:In a foundation pit engineering project as an example, analyzes the influence of excavation on local demolition pit bottom pile lateral partition support and foundation pit adjacent. Firstly the palisade structure analysis software FRWS7.4 to support dismantlement process stress analysis, and then according to the principle of force balance, the bottom of the force acting on the side by pile foundation, and the finite element software ABAQUS 2D simulation, then the local demolition process supporting pile foundation displacement and stress nephogram; shift at the bottom of pile side caused by adjacent excavation and then calculate the local demolition attached side adjacent excavation on bottom foundation support and shift results were obtained at the bottom of pile end displacement superposition. The results show that the partial demolition and support in the process of pile foundation safety is enough, adjacent to the excavation process has great influence on the late shift at the bottom of pile side, but does not affect the normal use.

【作者單位】： 杭州市城東新城建設(shè)投資有限公司;華東交通大學(xué)土木建筑學(xué)院;浙江大學(xué)福世德勘測(cè)設(shè)計(jì)有限公司;浙江大學(xué)濱海和城市巖土工程研究中心;
【基金】：江西省協(xié)同創(chuàng)新中心項(xiàng)目(2011) 江西省落地計(jì)劃成果轉(zhuǎn)化項(xiàng)目(KJLD4036)資助
【分類號(hào)】：TU753
【正文快照】： 引言隨著城市建筑的工程規(guī)�；潭仍絹�(lái)越高,基坑工程趨于大和深的方向發(fā)展。拆撐和基坑開(kāi)挖是影響基坑樁基安全性的關(guān)鍵因素。合理有效的施工方法對(duì)工程具有舉足輕重的意義。對(duì)于計(jì)算復(fù)雜施工過(guò)程中結(jié)構(gòu)的最終位移和內(nèi)力,朱維申等[1]認(rèn)為圍巖進(jìn)行開(kāi)挖和支護(hù)的施工過(guò)程,實(shí)際上，

本文編號(hào)：1379680