- 摘 要
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張吾渝 （青海大學(xué)建工系 西寧 810016）徐日慶 龔曉南 （浙江大學(xué)土木系 杭州 310027）
[提要] 首先，根據(jù)基坑開挖工程的特點(diǎn)，推導(dǎo)出考慮位移和時(shí)間效應(yīng)的土壓力計(jì)算公式，以便更好地模擬實(shí)際情況。其次，在彈性地基梁有限元計(jì)算程序的基礎(chǔ)上，采用考慮位移和時(shí)間效應(yīng)的土壓力計(jì)算公式對土壓力計(jì)算程序進(jìn)行了修改以及對參數(shù)反演部分作了相應(yīng)的修改。最后，在實(shí)際工程中進(jìn)行了實(shí)用計(jì)算和分析。
[關(guān)鍵詞] 基坑 開挖 土壓力 位移效應(yīng) 時(shí)間效應(yīng) 參數(shù)反演According to characteristics of foundation pits excavation, the calculation formula of earth pressure which oonsiders effects of both displacement and time has been put forward to meet the recpurements of foundation pits excavation. Next, based on the FEM program of elastic foundation beams, the earth pressure calculation program and parameter back-analysis program have been modified.Some good calculation results have been achieved. Finally, a historic case is studied with the new method of earth pressure calculation.
Keywords: foundation pits; earth pressure; displacement; time effect; parameter back-analysis
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