目的研究胆管、胰管双T管架桥术姑息治疗晚期胰头癌的应用价值。方法收集1999年10月至2013年10月我院共39例施行胆管、胰管双T管架桥术的临床资料,分析该术式的晚期胰头癌患者的手术时间、术中出血量、并发症发生率、术后住院天数、术...目的研究胆管、胰管双T管架桥术姑息治疗晚期胰头癌的应用价值。方法收集1999年10月至2013年10月我院共39例施行胆管、胰管双T管架桥术的临床资料,分析该术式的晚期胰头癌患者的手术时间、术中出血量、并发症发生率、术后住院天数、术后肝功能和腹痛恢复、生存时间等。结果平均手术时间(68.95±12.89)min;术中出血均少于50 m L,未输血;共发生12例胰瘘(30.77%),2例胆瘘(5.13%),均经引流后愈合;平均术后住院(13.87±2.55)d,无腹腔出血、感染等严重并发症。35例(89.74%)术后腹痛明显缓解;20例(100%)脂肪泻的患者均缓解。平均生存期(9.12±1.70)个月。结论胆管、胰管双T管架桥术手术简单安全、创伤小,能有效解患者胆道和胰管的梗阻症状,改善其生活质量。展开更多
A convenient approach is proposed for analyzing the ultimate load carrying capacity of concrete filled steel tubular (CFST) arch bridge with stiffening girders. A fiber model beam element is specially used to simulate...A convenient approach is proposed for analyzing the ultimate load carrying capacity of concrete filled steel tubular (CFST) arch bridge with stiffening girders. A fiber model beam element is specially used to simulate the stiffening girder and CFST arch rib. The geometric nonlinearity, material nonlinearity, influence of the construction process and the contribution of prestressing reinforcement are all taken into consideration. The accuracy of this method is validated by comparing its results with experimental results. Finally, the ultimate strength of an abnormal CFST arch bridge with stiffening girders is investigated and the effect of construction method is discussed. It is concluded that the construction process has little effect on the ultimate strength of the bridge.展开更多
In this paper stresses at joints forming by hollow steel tube and concrete filled steel tube （CFST） are calculated, analyzed and compared. It is founded that the stress concentration at joints of CFST is a quite dif...In this paper stresses at joints forming by hollow steel tube and concrete filled steel tube （CFST） are calculated, analyzed and compared. It is founded that the stress concentration at joints of CFST is a quite different from that of hollow steel tube. A conclusion can be made that analysis of fatigue at the joints of CFST truss arch bridge can not apply the results developed from analyzing at joints of hollow steel tube in marine structure.展开更多
文摘目的研究胆管、胰管双T管架桥术姑息治疗晚期胰头癌的应用价值。方法收集1999年10月至2013年10月我院共39例施行胆管、胰管双T管架桥术的临床资料,分析该术式的晚期胰头癌患者的手术时间、术中出血量、并发症发生率、术后住院天数、术后肝功能和腹痛恢复、生存时间等。结果平均手术时间(68.95±12.89)min;术中出血均少于50 m L,未输血;共发生12例胰瘘(30.77%),2例胆瘘(5.13%),均经引流后愈合;平均术后住院(13.87±2.55)d,无腹腔出血、感染等严重并发症。35例(89.74%)术后腹痛明显缓解;20例(100%)脂肪泻的患者均缓解。平均生存期(9.12±1.70)个月。结论胆管、胰管双T管架桥术手术简单安全、创伤小,能有效解患者胆道和胰管的梗阻症状,改善其生活质量。
文摘A convenient approach is proposed for analyzing the ultimate load carrying capacity of concrete filled steel tubular (CFST) arch bridge with stiffening girders. A fiber model beam element is specially used to simulate the stiffening girder and CFST arch rib. The geometric nonlinearity, material nonlinearity, influence of the construction process and the contribution of prestressing reinforcement are all taken into consideration. The accuracy of this method is validated by comparing its results with experimental results. Finally, the ultimate strength of an abnormal CFST arch bridge with stiffening girders is investigated and the effect of construction method is discussed. It is concluded that the construction process has little effect on the ultimate strength of the bridge.
文摘In this paper stresses at joints forming by hollow steel tube and concrete filled steel tube （CFST） are calculated, analyzed and compared. It is founded that the stress concentration at joints of CFST is a quite different from that of hollow steel tube. A conclusion can be made that analysis of fatigue at the joints of CFST truss arch bridge can not apply the results developed from analyzing at joints of hollow steel tube in marine structure.
