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     郭玉榮¹  王兆軍²  鄒銀生¹
    （1 湖南大學(xué)土木工程學(xué)院  長(zhǎng)沙 410082； 2 金華市城市規(guī)劃設(shè)計(jì)院 321000）

[提要]  考慮基坑開(kāi)挖過(guò)程中土體和支護(hù)墻的非線性相互作用特性，提出了一種合理模擬基坑施工過(guò)程的支護(hù)結(jié)構(gòu)內(nèi)力和變形分析的土抗力法。該方法在地基土抗力和土壓力的模擬上優(yōu)于現(xiàn)行的彈性地基梁法，使計(jì)算結(jié)果比較符合實(shí)際。
[關(guān)鍵詞]  基坑支護(hù)  非線性  土抗力  土壓力

Based on nonlinear soil-retaining structure interaction, a subgrade reaction method of analyzing force and deformation of retaining structure is proposed, which can properly simulate the construction sequence of excavation. The proposed method has been shown to capture the displacement of the retaining structure better than the method of beams on elastic foundation.
Keywords: retaining structure; foundation pit; nonlinear; subgrade reaction; earth pressure