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    楊振琨¹，杜成偉²
    （1 中國(guó)水利水電科學(xué)研究院抗震中心，北京100044；2 西安理工大學(xué)水利水電學(xué)院，西安710048）

[摘要] 某供水工程因場(chǎng)地條件所限，工程施工時(shí)無(wú)法向外作業(yè)，為此必須在二期工程的管道兩側(cè)打鋼板樁。為了分析打樁對(duì)一期管道可能產(chǎn)生的振動(dòng)影響，根據(jù)現(xiàn)場(chǎng)監(jiān)測(cè)的加速度的特點(diǎn)，應(yīng)用數(shù)值方法得到打樁荷載的分布形式及幅值，然后建立了土與管道相互作用的動(dòng)力接觸模型，對(duì)其進(jìn)行數(shù)值模擬分析，根據(jù)分析結(jié)果給出了一些初步的工程施工建議。
[關(guān)鍵詞] 動(dòng)力相互作用；動(dòng)力接觸；有限元；打樁振動(dòng)

The influence of pile driving on buried pipelines
Yang Zhenkun¹, Du Chengwei²
(1 The Earthquake Eng. Research Center, China Ins. of Water Resources and Hydropower Research, Beijing 100044, China; 2 Ins. of Water Resource and Hydro-electric Engineering, Xi'an Uni. of Technology, Xi'an 710048, China)

Abstract: Due to site conditions, the construction of a water supply project cannot be excavated. It is necessary to drive steel pipe for both sides of the second phase. To analyze the potential vibration of the first phase pipe affected by pile driving, with the larger acceleration of the monitoring data among them on the spot, the form and peak ofload for the pile driving were given. Then the dynamic contact model of pipe-soil interaction was built, the problem by the numerical simulation was analyzed and some preliminary construction advice was presented.
Keywords: dynamic interaction; dynanuc contact; FEA; driving pile vibratio