高速铁路技术
高速鐵路技術
고속철로기술
HIGH SPEED RAILWAY TECHNOLOGY
2015年
4期
31-35
,共5页
创新方法%无砟轨道%陡坡路基%差异沉降
創新方法%無砟軌道%陡坡路基%差異沉降
창신방법%무사궤도%두파로기%차이침강
innovative approach%ballastless track%steep slope subgrade%differential settlement
无砟轨道铁路对线路的平顺性、稳定性和耐久性提出了严格要求，当其以路基形式修建在陡坡段时，需要选择合理的加固结构形式来解决路基填筑体的不均匀沉降、地基土的不均匀沉降及加固结构水平变形过大等难题。应用创新思维和创新方法来进行问题分析，可以有效克服思维定势，从而可以确保加固结构方案的选择更加具有系统性和科学性。应用创新方法进行问题分析，得出以下结论：（1）无砟轨道铁路陡坡路基存在问题的实质是出现过大的横向差异沉降；（2）陡坡路基出现过大横向差异沉降的冲突区域为陡坡填筑体；（3）板椅式桩板结构是目前技术条件下解决无砟轨道铁路陡坡路基不均匀沉降较好的加固结构形式。
無砟軌道鐵路對線路的平順性、穩定性和耐久性提齣瞭嚴格要求，噹其以路基形式脩建在陡坡段時，需要選擇閤理的加固結構形式來解決路基填築體的不均勻沉降、地基土的不均勻沉降及加固結構水平變形過大等難題。應用創新思維和創新方法來進行問題分析，可以有效剋服思維定勢，從而可以確保加固結構方案的選擇更加具有繫統性和科學性。應用創新方法進行問題分析，得齣以下結論：（1）無砟軌道鐵路陡坡路基存在問題的實質是齣現過大的橫嚮差異沉降；（2）陡坡路基齣現過大橫嚮差異沉降的遲突區域為陡坡填築體；（3）闆椅式樁闆結構是目前技術條件下解決無砟軌道鐵路陡坡路基不均勻沉降較好的加固結構形式。
무사궤도철로대선로적평순성、은정성화내구성제출료엄격요구，당기이로기형식수건재두파단시，수요선택합리적가고결구형식래해결로기전축체적불균균침강、지기토적불균균침강급가고결구수평변형과대등난제。응용창신사유화창신방법래진행문제분석，가이유효극복사유정세，종이가이학보가고결구방안적선택경가구유계통성화과학성。응용창신방법진행문제분석，득출이하결론：（1）무사궤도철로두파로기존재문제적실질시출현과대적횡향차이침강；（2）두파로기출현과대횡향차이침강적충돌구역위두파전축체；（3）판의식장판결구시목전기술조건하해결무사궤도철로두파로기불균균침강교호적가고결구형식。
Ballastless track railway has very strict demand for ride comfort,stability and durability. When it is construc-ted on steep slope section as subgrade,rational reinforcing structure should be selected to resolve the problems such as uneven settlement of subgrade fillings and foundation soil as well as excessive horizontal deformation of reinforcing struc-ture. Innovative thinking and approach can be used to overcome the mind-set,thereby to ensure more systematic and scientific selection of the scheme of reinforcing structure. By adopting innovative approach,the following conclusions are obtained:excessive lateral differential settlement is the core issue for steep slope subgrade of ballastless track railway;its conflict area is steep slope fillings;chair-shaped pile board structure is a better reinforcing structure for the steep slope subgrade of ballastless track railway under the present technical conditions.
