高速铁路技术
高速鐵路技術
고속철로기술
HIGH SPEED RAILWAY TECHNOLOGY
2014年
3期
90-93
,共4页
高填方%明洞结构%荷载%土体挟持作用
高填方%明洞結構%荷載%土體挾持作用
고전방%명동결구%하재%토체협지작용
high fill%open cut tunnel%load%the effect of soil holding function
随着城市建设的发展，高填方明洞工程不断出现。当前高填方明洞的荷载计算仍按传统的全土柱理论计算，未考虑填土高度增加后明洞荷载的形成过程的变化，存在明洞荷载计算偏大的问题。文中提出高填方明洞荷载计算应考虑土体挟持作用的影响，推导出高填方明洞荷载计算方法，并对不同填土高度条件下考虑土体挟持作用理论与全土柱理论计算结果进行对比分析，而后探讨了填筑质量对明洞荷载的影响。在渝利铁路丰都造地高填方明洞工程中，运用考虑土体挟持作用计算方法进行明洞荷载计算，优化了明洞荷载。目前，该工程已成功实施，取得了良好的社会经济效益。
隨著城市建設的髮展，高填方明洞工程不斷齣現。噹前高填方明洞的荷載計算仍按傳統的全土柱理論計算，未攷慮填土高度增加後明洞荷載的形成過程的變化，存在明洞荷載計算偏大的問題。文中提齣高填方明洞荷載計算應攷慮土體挾持作用的影響，推導齣高填方明洞荷載計算方法，併對不同填土高度條件下攷慮土體挾持作用理論與全土柱理論計算結果進行對比分析，而後探討瞭填築質量對明洞荷載的影響。在渝利鐵路豐都造地高填方明洞工程中，運用攷慮土體挾持作用計算方法進行明洞荷載計算，優化瞭明洞荷載。目前，該工程已成功實施，取得瞭良好的社會經濟效益。
수착성시건설적발전，고전방명동공정불단출현。당전고전방명동적하재계산잉안전통적전토주이론계산，미고필전토고도증가후명동하재적형성과정적변화，존재명동하재계산편대적문제。문중제출고전방명동하재계산응고필토체협지작용적영향，추도출고전방명동하재계산방법，병대불동전토고도조건하고필토체협지작용이론여전토주이론계산결과진행대비분석，이후탐토료전축질량대명동하재적영향。재투리철로봉도조지고전방명동공정중，운용고필토체협지작용계산방법진행명동하재계산，우화료명동하재。목전，해공정이성공실시，취득료량호적사회경제효익。
With the development of city construction,the high fill open cut tunnel appeared continuously.However its load is still calculated according to the traditional all soil column theory,without considering the change of high fill loads after the filling height increased;generally in the calculation such load value is bigger.In this paper it is put forward that in the load calculation the effect of soil holding function should be considered,the high fill load calculation method should be deduced,and under different fill height condition,the results calculated by both the soil holding function the-ory and the all soil column theory are compared and analyzed,then preliminary study on the influence on quality of high fill load should be carried out.In the Chongqing railway,the load of Fengdu high fill open cut tunnel is calculated using the soil holding function theory,the open cut tunnel load has been optimized.At present,the project has been imple-mented successfully,and achieved good social and economic benefits.
