CAJ | 학술논문

阐述胶济线CRH2型动车组列车交会空气压力波实车测试情况,对测试结果进行详细分析,并将实车试验结果与数值模拟计算结果进行比较.研究结果表明:250 km/ h等速交会情况下,实车试验测得的车体表面交会压力波最大幅值为1 195 Pa,在铁路线间距为4.4 m的条件下不会对列车运行安全产生影响;车厢内最大压力变化幅值为19 Pa,仅为车体表面压力变化幅值的1.6%,车厢内产生的压力变化幅值不会对乘客舒适性产生影响;在4.4 m线间距情况下,被测试的CHR2型动车组上的交会压力波幅值近似与同型号等速交会动车组运行速度的平方成正比;数值计算与实车试验得到的规律基本吻合,计算与试验结果相差5.15%,数值计算结果可信.
천술효제선CRH2형동차조열차교회공기압력파실차측시정황,대측시결과진행상세분석,병장실차시험결과여수치모의계산결과진행비교.연구결과표명:250 km/ h등속교회정황하,실차시험측득적차체표면교회압력파최대폭치위1 195 Pa,재철로선간거위4.4 m적조건하불회대열차운행안전산생영향;차상내최대압력변화폭치위19 Pa,부위차체표면압력변화폭치적1.6%,차상내산생적압력변화폭치불회대승객서괄성산생영향;재4.4 m선간거정황하,피측시적CHR2형동차조상적교회압력파폭치근사여동형호등속교회동차조운행속도적평방성정비;수치계산여실차시험득도적규률기본문합,계산여시험결과상차5.15%,수치계산결과가신.
The real train test on air pressure pulses generated in passing of CRH2 EMU trains on the Qingdao-Jinan Railway Line has been made,and the results have been analyzed in details. The measured results have also been compared with the results of numerical simulation. The following conclusions have been drawn from research: Under the condition of the train meeting at the constant velocity of 250 km/h,the maximum magnitude of the air pressure pulses on the EMU car body reaches 1195 Pa in the real train test,which has no effect on the running safety of the trains travelling on the lines with 4.4 m spacing distance,and the maximum amplitude of the pressure variation inside the car is 19 Pa,being just 1.6% of that on the car body surface,which meets the requirement of comfort of passengers;when two same model trains pass by each other in identical velocity,the amplitude of the air pressure pulses in the CRH2 EMU train measured is approximately directly proportional to the square of the travelling velocity of the other CRH2 EMU train under the condition of 4.4 m distance between adjacent lines; the measured results conform with numerical simulation,their difference being 5.15%.