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您的检索式：作者名="Chung C.Fu"
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| 1 | 装配式板桥的横向预应力设计显示文摘基于摩擦抗剪的概念,提出一种确定横向预应力张拉设计值的方法.计算表明:在考虑板间铰缝及混凝土桥面板纵向开裂的情形下,装配式板桥的横向联结性能随着横向预应力的增大而增加;但是当横向预应力水平达到一定的程度(如Np0)之后,其横向联结性能基本不变,横向预应力的设计张拉值应大于Np0.通过美国马里兰州的一座装配式实心板桥的车载试验,研究了横向预应力对桥梁横向联结性能的影响.理论及试验表明,当桥面板及铰缝没有纵向开裂时,板间具备了足够的荷载横向传递能力,横向预应力对桥梁的横向联结性能影响不大.但横向预应力的存在,保证了铰缝和铺装层开裂后桥梁具有良好的横向联结性能,可以有效地抑制纵向裂缝病害的发展,确保桥梁的使用性能和安全性. | 潘钻峰 Chung C.Fu 吕志涛 | 2010 | 东南大学学报(自然科学版)2010，40，6： | 15 |
| 2 | Survival Analysis Using Cox Proportional Hazards Regression for Pile Bridge Piles Under Wet Service Conditions显示文摘This paper studies the deterioration of bridge substructures utilizing the Long-Term Bridge Performance(LTBP)Program InfoBridge^(TM)and develops a survival model using Cox proportional hazards regression.The survival analysis is based on the National Bridge Inventory(NBI)dataset.The study calculates the survival rate of reinforced and prestressed concrete piles on bridges under marine conditions over a 29-year span(from 1992 to 2020).The state of Maryland is the primary focus of this study,with data from three neighboring regions,the District of Columbia,Virginia,and Delaware to expand the sample size.The data obtained from the National Bridge Inventory are condensed and filtered to acquire the most relevant information for model development.The Cox proportional hazards regression is applied to the condensed NBI data with six parameters:Age,ADT,ADTT,number of spans,span length,and structural length.Two survival models are generated for the bridge substructures:Reinforced and prestressed concrete piles in Maryland and reinforced and prestressed concrete piles in wet service conditions in the District of Columbia,Maryland,Delaware,and Virginia.Results from the Cox proportional hazards regression are used to construct Markov chains to demonstrate the sequence of the deterioration of bridge substructures.The Markov chains can be used as a tool to assist in the prediction and decision-making for repair,rehabilitation,and replacement of bridge piles.Based on the numerical model,the Pile Assessment Matrix Program(PAM)is developed to facilitate the assessment and maintenance of current bridge structures.The program integrates the NBI database with the inspection and research reports from various states’department of transportation,to serve as a tool for condition state simulation based on maintenance or rehabilitation strategies. | Naiyi Li Kuang-Yuan Hou Yunchao Ye Chung C.Fu | 2023 | Journal of Architectural Environment & Structural Engineering Research2023，6，2： | 0 |
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