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反力架在挂篮预压检测中的应用
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作者 刘桂凤 《广东公路交通》 2007年第1期53-55,共3页
潭洲特大桥全长1 142m,主跨设计为58m+90m+58m变截面预应力砼连续箱梁,采用挂篮悬臂浇筑法施工。就该施工方法而言,正确评价挂篮的强度、刚度和稳定性,验证挂篮的安全性,并获取挂篮在荷载作用下的变形数据及规律,非常重要。在实践中采... 潭洲特大桥全长1 142m,主跨设计为58m+90m+58m变截面预应力砼连续箱梁,采用挂篮悬臂浇筑法施工。就该施工方法而言,正确评价挂篮的强度、刚度和稳定性,验证挂篮的安全性,并获取挂篮在荷载作用下的变形数据及规律,非常重要。在实践中采用了反力架法进行预压检测,取得了成功。 展开更多
关键词 桥梁 挂篮 预压检测 反力架法
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叙述现浇桥梁支架强度和稳定性的计算
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作者 苏添伦 《黑龙江交通科技》 2014年第7期110-111,共2页
施工前必须对现浇桥梁支架的安全性进行仔细的分析演算。结合具体工程案例对现浇桥梁支架强度和稳定性的计算的要点进行了探析。
关键词 现浇桥梁 支架 强度 稳定性 计算 预压检测
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反力架压载试验在挂篮施工悬浇连续梁中的应用
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作者 宋建江 《城市建设(下旬)》 2011年第3期137-137,139,共2页
佛山市兴朗大桥全长545m,主跨设计为47.3m+77m+44.7m变截面预应力砼连续箱粱,由两个左右幅分离的两个单箱双室箱型截面组成,箱梁顶板宽18m,点板宽125m,采用挂篮悬臂浇筑法施工。为了正确评价挂篮的强度、刚度和稳定性,验证挂... 佛山市兴朗大桥全长545m,主跨设计为47.3m+77m+44.7m变截面预应力砼连续箱粱,由两个左右幅分离的两个单箱双室箱型截面组成,箱梁顶板宽18m,点板宽125m,采用挂篮悬臂浇筑法施工。为了正确评价挂篮的强度、刚度和稳定性,验证挂篮的安全性,并获取挂篮在荷载作用下的变形数据及规律,在实践中采用了反力架法进行预压检测,取得了成功。 展开更多
关键词 桥梁 挂篮 预压检测 反力架法
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Predictors and clinical outcomes for spontaneous rupture of hepatocellular carcinoma 被引量:40
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作者 Qian Zhu Jing Li +3 位作者 Jian-Jun Yan Liang Huang Meng-Chao Wu Yi-Qun Yan 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第48期7302-7307,共6页
AIM:To determine the risk factors for hepatocellular carcinoma(HCC) rupture,and report the management and long-term survival results of patients with spontaneous rupture of HCC.METHODS:Among 4209 patients with HCC who... AIM:To determine the risk factors for hepatocellular carcinoma(HCC) rupture,and report the management and long-term survival results of patients with spontaneous rupture of HCC.METHODS:Among 4209 patients with HCC who were diagnosed at Eastern Hepatobiliary Surgery Hospital from April 2002 to November 2006,200(4.8%) patients with ruptured HCC(case group) were studied retrospectively in term of their clinical characteristics and prognostic factors.The one-stage therapeutic approach to manage ruptured HCC consisted of initial management by conservative treatment,transarterial embolization(TACE) or hepatic resection.Results of various treatments in the case group were evaluated and compared with the control group(202 patients) without ruptured HCC during the same study period.Continuous data were expressed as mean ± SD or me-dian(range) where appropriate and compared using the unpaired t test.Categorical variables were compared using the Chi-square test with Yates correction or the Fisher exact test where appropriate.The overall survival rate in each group was determined using the Kaplan-Meier method and a log-rank test.RESULTS:Compared with the control group,more patients in the case group had underlying diseases of hypertension(7.5% vs 3.0%,P =0.041) and liver cirrhosis(87.5% vs 56.4%,P < 0.001),tumor size >5 cm(83.0% vs 57.4%,P < 0.001),tumor protrusion from the liver surface(66.0% vs 44.6%,P < 0.001),vascular thrombus(30.5% vs 8.9%,P < 0.001) and extrahepatic invasion(36.5% vs 12.4%,P < 0.001).On multivariate logistic regression analysis,underlying diseases of hypertension(P = 0.002) and liver cirrhosis(P < 0.001),tumor size > 5 cm(P < 0.001),vascular thrombus(P = 0.002) and extrahepatic invasion(P < 0.001) were predictive for spontaneous rupture of HCC.Among the 200 patients with spontaneous rupture of HCC,105 patients underwent hepatic resection,33 received TACE,and 62 were managed with conservative treatment.The median survival time(MST) of all patients with spontaneous rupture of HCC was 6 mo(range,1-72 mo),and the overall survival at 1,3 and 5 years were 32.5%,10% and 4%,respectively.The MST was 12 mo(range,1-72 mo) in the surgical group,4 mo(range,1-30 mo) in the TACE group and 1 mo(range,1-19 mo) in the conservative group.Ninety-eight patients in the control group underwent hepatic resection,and the MST and median diseasefree survival time were 46 mo(range,6-93 mo) and 23 mo(range,3-39 mo) respectively,which were much longer than that of patients with spontaneous rupture of HCC undergoing hepatic resection(P < 0.001).The 1-,3-,and 5-year overall survival rates and the 1-,3-and 5-year disease-free survival rates in patients with ruptured HCC undergoing hepatectomy were 57.1%,19.0% and 7.6%,27.6%,14.3% and 3.8%,respectively,compared with those of 77.1%,59.8% and 41.2%,57.1%,40.6% and 32.9% in 98 patients with-CONCLUSION:Prolonged survival can be achieved in selected patients undergoing one-stage hepatectomy,although the survival results were inferior to those of the patients without ruptured HCC. 展开更多
关键词 Hepatocellular carcinoma Spontaneous rupture Predictors Hepatectomy Overall survival Disease-free survival
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