上海国土资源
上海國土資源
상해국토자원
2013年
2期
88~91
,共null页
盾构施工 姿态控制 导向系统 棱镜法测量 控制网优化
盾構施工 姿態控製 導嚮繫統 稜鏡法測量 控製網優化
순구시공 자태공제 도향계통 릉경법측량 공제망우화
shield construction; attitude control; coordinate transformation; guidance system; prism method measurement; control network optimization
盾构姿态控制是城市地铁施工中的关键环节,棱镜法是常用的测量手段,而控制点的布设将影响测量精度。阐述采用坐标转换方法的盾构导向系统解算过程与精度分析;根据误差理论对拟选方案进行比较分析,探讨棱镜控制点的优化布设原则与实施方案。分析结果认为：在有限的盾构机空间内,尽量将网型布设得合理,可提高工作精度;优化布设的准则是将棱镜控制点间距尽可能拉大,并均匀布置在盾构中轴线两侧,且使它们之间有相应的高差。
盾構姿態控製是城市地鐵施工中的關鍵環節,稜鏡法是常用的測量手段,而控製點的佈設將影響測量精度。闡述採用坐標轉換方法的盾構導嚮繫統解算過程與精度分析;根據誤差理論對擬選方案進行比較分析,探討稜鏡控製點的優化佈設原則與實施方案。分析結果認為：在有限的盾構機空間內,儘量將網型佈設得閤理,可提高工作精度;優化佈設的準則是將稜鏡控製點間距儘可能拉大,併均勻佈置在盾構中軸線兩側,且使它們之間有相應的高差。
순구자태공제시성시지철시공중적관건배절,릉경법시상용적측량수단,이공제점적포설장영향측량정도。천술채용좌표전환방법적순구도향계통해산과정여정도분석;근거오차이론대의선방안진행비교분석,탐토릉경공제점적우화포설원칙여실시방안。분석결과인위：재유한적순구궤공간내,진량장망형포설득합리,가제고공작정도;우화포설적준칙시장릉경공제점간거진가능랍대,병균균포치재순구중축선량측,차사타문지간유상응적고차。
Shield attitude control is a key factor in the construction of urban subways.The prism method is a commonly used method of measurement,and the layout of control points will affect the accuracy of measurement.This paper uses the coordinate transformation method of a shield-driven system to examine the process and to analyze precision.According to error theory,a comparative analysis of the proposed scheme is made that considers the principle of layout optimization and executes a solution for the prism control points.The results show that,in the limited space of the shield machine,the layout of control points is one of the best ways to improve the resulting accuracy.The rule to achieve optimized layout is to widen the spacing of prism control points as much as possible,and to arrange them evenly on both sides of the central axis of the shield,to make a corresponding difference between them.
