铁道标准设计
鐵道標準設計
철도표준설계
Railway Standard Design
2015年
12期
53-57,58
,共6页
徐辉%张世基%严章荣%孟庆涛
徐輝%張世基%嚴章榮%孟慶濤
서휘%장세기%엄장영%맹경도
重载铁路%预应力混凝土%简支梁%连续梁%T梁%箱形梁%设计%经济性
重載鐵路%預應力混凝土%簡支樑%連續樑%T樑%箱形樑%設計%經濟性
중재철로%예응력혼응토%간지량%련속량%T량%상형량%설계%경제성
Heavy haul railway%Prestressed concrete%Simple supported beam%Continuous beam%T beam%Box beam%Design%Economic
针对国内首条重载铁路山西中南部铁路通道工程的建设,结合系列简支T梁和连续梁的工程设计和经济性分析,得出重载预应力混凝土梁桥的合理设计,通过中活载与重载两种荷载模式下常用跨度简支T梁和系列连续梁的设计、研究,对比分析桥梁上部及下部结构的材料用量和延米造价,确定山西中南部铁路通道工程采用的混凝土梁桥线通图,主要结论如下:(1)预应力混凝土梁部设计在活载采用重载列车时,其材料用量提高值小于其承载能力提高值;(2)活载采用重载列车对下部结构的影响比值较小。
針對國內首條重載鐵路山西中南部鐵路通道工程的建設,結閤繫列簡支T樑和連續樑的工程設計和經濟性分析,得齣重載預應力混凝土樑橋的閤理設計,通過中活載與重載兩種荷載模式下常用跨度簡支T樑和繫列連續樑的設計、研究,對比分析橋樑上部及下部結構的材料用量和延米造價,確定山西中南部鐵路通道工程採用的混凝土樑橋線通圖,主要結論如下:(1)預應力混凝土樑部設計在活載採用重載列車時,其材料用量提高值小于其承載能力提高值;(2)活載採用重載列車對下部結構的影響比值較小。
침대국내수조중재철로산서중남부철로통도공정적건설,결합계렬간지T량화련속량적공정설계화경제성분석,득출중재예응력혼응토량교적합리설계,통과중활재여중재량충하재모식하상용과도간지T량화계렬련속량적설계、연구,대비분석교량상부급하부결구적재료용량화연미조개,학정산서중남부철로통도공정채용적혼응토량교선통도,주요결론여하:(1)예응력혼응토량부설계재활재채용중재열차시,기재료용량제고치소우기승재능력제고치;(2)활재채용중재열차대하부결구적영향비치교소。
With respect to the construction of the first heavy haul railway in central and southern part of shanxi , this paper addresses the rational design of prestressed concrete beam bridge on heavy haul railway based on the engineering design and economic analysis of series of simple supported T beam and continuous beam. Comparative analysis is conducted of the beam and the upper and lower structure material dosage and the linear meter cost on the basis of the design and research on the live load and overload in conventional span under two load modes of series of simply supported T beam and continuous beam, and to draw out the map of concrete beam bridge and track. The main conclusions are as follows:(1) when the live load of prestressed concrete beam is calculated in the case of the heavy haul train, its material consumption value is less than its carrying capacity improvement value;(2) when the live load is calculated with the heavy haul train, the impact on the infrastructure is smaller.