高速铁路技术
高速鐵路技術
고속철로기술
HIGH SPEED RAILWAY TECHNOLOGY
2013年
3期
68-70,78
,共4页
成贵铁路%路基填料%料源选取原则%调配优化设计
成貴鐵路%路基填料%料源選取原則%調配優化設計
성귀철로%로기전료%료원선취원칙%조배우화설계
Chengdu-Guiyang railway%subgrade filling%selecting principle of filling source%optimization design for fill-ing allocation
路基填料调配设计是高速铁路路基设计的重要组成部分，路基填料来源及运距的合理确定对高速铁路路基建设成本控制有着显著影响，对确保路基的稳定性及耐久性有着重要意义。文章针对成贵铁路乐山至兴文段填料调配设计，提出了以安全因素、经济指标为优化目标的料源选取原则，并根据料源选取原则以及填料来源分布情况，对成贵铁路乐山至兴文段填料调配设计进行了多方案优化比选，合理地确定了填料调配方案，即以价购砂卵石（或采石场硬质岩）为主，当运距较大、价差较大时，采用就近利用路堑挖方或隧道弃砟改良土进行路基填筑。
路基填料調配設計是高速鐵路路基設計的重要組成部分，路基填料來源及運距的閤理確定對高速鐵路路基建設成本控製有著顯著影響，對確保路基的穩定性及耐久性有著重要意義。文章針對成貴鐵路樂山至興文段填料調配設計，提齣瞭以安全因素、經濟指標為優化目標的料源選取原則，併根據料源選取原則以及填料來源分佈情況，對成貴鐵路樂山至興文段填料調配設計進行瞭多方案優化比選，閤理地確定瞭填料調配方案，即以價購砂卵石（或採石場硬質巖）為主，噹運距較大、價差較大時，採用就近利用路塹挖方或隧道棄砟改良土進行路基填築。
로기전료조배설계시고속철로로기설계적중요조성부분，로기전료래원급운거적합리학정대고속철로로기건설성본공제유착현저영향，대학보로기적은정성급내구성유착중요의의。문장침대성귀철로악산지흥문단전료조배설계，제출료이안전인소、경제지표위우화목표적료원선취원칙，병근거료원선취원칙이급전료래원분포정황，대성귀철로악산지흥문단전료조배설계진행료다방안우화비선，합리지학정료전료조배방안，즉이개구사란석（혹채석장경질암）위주，당운거교대、개차교대시，채용취근이용로참알방혹수도기사개량토진행로기전축。
Design for filling allocation is an important component of the design for high-speed railway subgrade.The filler sources and their reasonable conveying distance have a substantial impact on the construction cost control and a great sig-nificance in ensuring the subgrade stability and durability.For the design of filler allocation of Leshan-Xingwen section of Chengdu-Guiyang railway,this paper put forward the selecting principles of the filler sources from safety and economic factors.According to the said principles and the filling source distribution,the filling allocation design has been com-pared and optimized and the reasonable scheme for filling allocation has been determined.Priority is flrst given to pur-chasement of sandy gravel (or hard rock in stone quarry),Only when sandy gravel is purchased at a far away place or at a very high price,can spoil improved from excavation or tumeling be used as filling for subgrade.
