基于ANSYS有限元的樁錨聯(lián)合支護優(yōu)化設(shè)計
付 懷1，龍麗娜2，李 敏1
- 摘 要
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（1 國家知識產(chǎn)權(quán)局專利局專利審查協(xié)作北京中心，北京 100081；2 北京華福工程有限公司，北京 100013）[摘要] 在總結(jié)深基坑樁錨聯(lián)合支護設(shè)計與施工的工程實踐基礎(chǔ)上，依托具體的工程實例，首先運用傳統(tǒng)的深基坑支護極限平衡分析理論和常用的基坑支擋結(jié)構(gòu)分析計算軟件同濟啟明星FRWS，計算深基坑支護結(jié)構(gòu)內(nèi)力；然后運用有限元模擬分析軟件ANSYS建立深基坑模型，分析該深基坑工程支護樁樁身的彎矩分布情況；最后以實際設(shè)計值為基準，用比較分析的方法將以上兩種情況下得出的內(nèi)力值與實際設(shè)計值相比較，分析各種方法計算結(jié)果差異性、合理性與工程可行性，提出采用各道錨桿的最優(yōu)錨固力對應(yīng)的樁身彎矩進行混凝土樁身的配筋計算。[關(guān)鍵詞] 深基坑; 樁錨支護體系; 彎矩; 有限元模型; 數(shù)值模擬中圖分類號：TU473.1 文獻標示碼：A 文章編號：1002-848X(2013)S2-0621-07作者簡介：付懷，碩士研究生，助理研究員，Email：fuhuai5611@163.com。Optimal design of pile-anchor combined support Based on ANSYS finite elementFu Huai1，Long Lina2，Li Min1（1 Patent Examination Cooperation Center of the Patent Office, SIPO ,Beijing 100081, China; 2 Beijing Huafu Engineering Co., Ltd.，Beijing 100013，China）Abstract: Based on summarizing deep foundation design and construction of piles-anchor support, structure internal force of deep foundation pit support is calculated by traditional deep foundation support limit equilibrium theory and Tongji Venus Series software(FRWS), relying on a concrete engineering example. And then the FEM ANSYS is used to set up the model of deep foundation pit, and to analyze the bending moments distribution of the supporting structure. Finally, internal forces from two methods are compared with the actual design values. The differences and rationality of calculation results and engineering feasibility were analyzed in two methods, and it is proposed to calculate concrete pile reinforcement by the pile bending moment which corresponds to the optimal anchoring force of every anchor.Keywords: deep foundation; pile-anchor supporting system; bending moment; finite element model; numerical simulation
