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36+55+36m混凝土连续箱梁荷载试验及承载能力验算分析
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作者 赵庆贺 《中文科技期刊数据库(全文版)工程技术》 2023年第2期52-57,共6页
介绍了某实际工程36+55+36m混凝土连续梁桥荷载试验方案,使用Midas civil建立了桥梁空间杆系分析模型,模拟各施工阶段的桥梁结构内力,根据现场实际情况制定桥梁静载试验方案,经过现场试验得到的试验数据与模型理论值吻合良好,桥梁结构... 介绍了某实际工程36+55+36m混凝土连续梁桥荷载试验方案,使用Midas civil建立了桥梁空间杆系分析模型,模拟各施工阶段的桥梁结构内力,根据现场实际情况制定桥梁静载试验方案,经过现场试验得到的试验数据与模型理论值吻合良好,桥梁结构安全可靠;对桥梁进行了承载能力验算,按照桥梁现场施工特点,将支座沉降分为8mm、9mm、10mm、15mm四个工况进行重点计算,得出各工况支座沉降对桥梁构件受力状态的影响,并给出支座沉降预警值,为混凝土桥梁施工及荷载试验计算积累了经验。 展开更多
关键词 混凝土连续梁箱 荷载试验 承载能力验算 有限元模型
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Research on the railway construction process quality model based on the state space method 被引量:1
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作者 Lu Shoudong Zhou Guohua +1 位作者 Chen Haifeng Zhao Guotang 《Engineering Sciences》 EI 2013年第5期54-60,共7页
In the ISO9000"input-output"process model,the concept of process quality is difficult to get the correct interpretation. From the"white box"theory of process,this paper puts forward the scientific ... In the ISO9000"input-output"process model,the concept of process quality is difficult to get the correct interpretation. From the"white box"theory of process,this paper puts forward the scientific meaning of the concept of process quality and the process quality model by taking the basic operating unit of 6M1E in the railway construction project for example. The basic operating unit system consists of technological natural process,operation process and management process;the process quality of the basic operating unit system depends on the interrelation and interaction among those three sub-processes,and also subjects to the impact of the external disturbance input factors. Finally,the cast-in-situ prestressed concrete continuous box girder construction process is utilized to elaborate the specific application of this theory in the quality management of the railway construction project. 展开更多
关键词 railway construction project "white box" model state transition equation process quality
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