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陳家春
(福建省建筑輕紡設(shè)計(jì)院有限公司 ,福州 350001)
摘 要: 以某市商業(yè)綜合體深基坑為研究對(duì)象,采取土釘墻、高壓旋噴樁、水泥土攪拌樁及隔離樁等多種圍護(hù)措施,探討復(fù)雜深基坑時(shí)空動(dòng)態(tài)響應(yīng)特性與圍護(hù)效果。結(jié)果表明: 加固方法成效顯著 ,其中距離基坑 10 、20 與 30 m 處的最大應(yīng)力降至 27. 4 、24. 7 和 22. 6 kPa , 相較于未加固時(shí)均下降 40%以上 ;最大水平變形量與豎向沉降值降幅均超 50% 。加固措施有效控制了土體應(yīng)力和變形,為深基坑工程安全高效施工提供了保障。
關(guān)鍵詞:復(fù)雜建筑 ;深基坑 ;時(shí)空動(dòng)態(tài)響應(yīng) ;圍護(hù)效果
中圖分類(lèi)號(hào):TU753
文獻(xiàn)標(biāo)志碼:A
文章編號(hào): 1005- 8249 (2025) 02- 0079- 06
DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .02.014
CHEN Jiachun
(Fujian Construction Textile Design Institute Co . , Ltd . , Fuzhou 350001 , China)
Abstract: To study the stability of slopes containing weak interlayers, based on the treatment of a landslide in a certain water conservancy project, the factors affecting slope stability and the effectiveness of anti slip pile treatment were studied. Abaqus software was used to model and calculate the impact of changes in anti slip pile parameters on slope stability. The results show that the displacement of the upper part of the slope is relatively large among the various steps of the slope. In the depth direction of the slope, there is a certain fluctuation in the displacement of each step. The displacement at a depth of 20.2m is relatively large, but the cumulative displacement is always within a small range (±10mm). After being supported by anti slip piles, the displacement of the slope gradually tends to stabilize; Rainfall and engineering activities can cause disturbance to the slope, accelerating its instability. However, anti slip piles have a good effect on reinforcing the slope, and the cumulative displacement values are stable within the control range; Through numerical simulation optimization of anti slip pile design, it was found that the most economical and reasonable solution is when the anti slip pile is located at the second step, with a pile length of 23.4m and a pile spacing of 5m.
Key words: soft interbedded strata; field monitoring; slope stability; slip-resistant pile design optimization
作者簡(jiǎn)介: 陳家春 (1978—) , 男 ,本科 ,教授級(jí)高級(jí)工程 師 ,研究方向:建筑結(jié)構(gòu)設(shè)計(jì)。
收稿日期:2024 - 08 - 19
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