地梁?墻基組合式基礎(chǔ)受力變形試驗(yàn)研究*
竇寶衛(wèi)，段緒勝，汪 振，滿建鵬
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（山東農(nóng)業(yè)大學(xué)，泰安 271018）[摘要] 為改善地基的不均勻沉降問(wèn)題提出一種新型基礎(chǔ)形式——地梁?墻基組合式基礎(chǔ)。以地梁?墻基組合式基礎(chǔ)為研究對(duì)象，開(kāi)展了不同約束條件下組合式基礎(chǔ)受壓承載能力試驗(yàn)以研究該類基礎(chǔ)的破壞過(guò)程、破壞模式，并對(duì)地梁?墻基組合式基礎(chǔ)破壞過(guò)程進(jìn)行有限元分析。結(jié)果表明，數(shù)值模擬較好地預(yù)測(cè)了該基礎(chǔ)的破壞形態(tài)，與物理試驗(yàn)吻合較好；證明了該基礎(chǔ)能夠很大程度上減小上部結(jié)構(gòu)的撓度變形，從而減輕由于地基不均勻沉降引起的墻體開(kāi)裂，驗(yàn)證了該課題在建筑結(jié)構(gòu)方面的可行性。[關(guān)鍵詞] 地基不均勻沉降; 地梁?墻基組合式基礎(chǔ); 受壓承載能力; 有限元分析中圖分類號(hào)：TU365 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)S2-0680-06Ttest research on stress deformation of the new composite foundationof ground-beam and bench-tableDou Baowei, Duan Xusheng, Wang Zhen, Man Jianpeng(Shandong Agriculture University, Tai'an 271018, China)Abstract: The new composite foundation of ground-beam and bench-table was put forward to improve the uneven settlement of the soft foundation. Selecting the new foundation as the research object, a compressive bearing capacity test under different constraint conditions has been conducted to study its failure process, failure pattern, while carry out the finite element analysis. The experiment results indicate that numerical simulation fitly predicts the failure pattern consistent with the physical experiments, proving that the foundation can largely reduce the deflection deformation of upper structure, which can reduce the cracking caused by uneven settlement of foundation and verify the feasibility of this project in the aspect of building structure.Keywords: uneven settlement of foundations；the new composite foundation of ground-beam and bench-table; compressive bearing capacity; finite element analysis*山東省科技發(fā)展計(jì)劃項(xiàng)目（2012GNC11401），國(guó)家自然科學(xué)金重大研究計(jì)劃（90915004），大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃項(xiàng)目（201210434015）。作者簡(jiǎn)介：竇寶衛(wèi)，男，本科，Email: dou931342468@163.com。
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