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[提要]  研究了將深基坑樁墻支護(hù)結(jié)構(gòu)視為彈性地基梁的數(shù)值分析方法，推導(dǎo)了采用“混合結(jié)構(gòu)力學(xué)法”求解該問題的基本力學(xué)方程，提出采用“荷載增量法”模擬深基坑開挖施工的全過程，簡(jiǎn)要介紹了筆者多年來開發(fā)應(yīng)用的深基坑樁墻支護(hù)結(jié)構(gòu)設(shè)計(jì)軟件系統(tǒng)PW'98，并給出了工程應(yīng)用實(shí)例。
[關(guān)鍵詞]  深基坑樁墻支護(hù)結(jié)構(gòu)  彈性地基梁法荷載增量法

The numerical analysis method of the deep fundation pit pile/wall retaining structure which is regarded as beam on elastic fundation is studied, and accordingly, the fundamental mechanical equations with composite structure mechanics method are derived. The writer also explores the possibility of simulating the full process of deep foundation pit excavation with load increment method. A CAD software PW'98 for deep foundation pit pile/wall retaining structure design developed by the writer over years is introduced with an example.
Keywords: deep foundation pit;  pile/wall retaining structure;  method of beam on elastic foundation;  load increment method